CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED patent applications published on October 12th, 2023

Summary of the patent applications from CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED on October 12th, 2023

CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED has filed several recent patents related to battery technology. These patents cover various aspects of battery design, performance management, and safety features. Notable applications include:

• A perovskite solar cell with multiple layers and an enclosed space containing a gas mixture.
• A method and system for charging a power battery and managing its performance based on the negative electrode potential.
• A battery cell with an end cover assembly that includes a liquid injection hole and a sealer to seal the hole.
• A composite separator for electrochemical energy storage devices that includes an anode protection layer to prevent damage from transition metal ions.
• A pressure relief apparatus with multiple stages of score grooves arranged in a sequential manner.
• A battery pack for a vehicle with a cavity and limiting grooves on the inner sidewall to securely hold the cell module.
• A battery module with multiple battery cell columns arranged perpendicular to each other and spacer plates securely attached to the battery cells.
• A battery storage device and oiling method for maintaining and prolonging the service life of a battery's connecting element.
• A battery cell with an electrode assembly, an end cover assembly, and a buffer member for electrical connections.
• A battery and method for reducing battery gassing by using a gas reducer inside the housing.

These patents demonstrate CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED's focus on improving battery performance, safety, and longevity. The company is exploring various aspects of battery design, including solar cell integration, charging management, sealing mechanisms, separator protection, pressure relief, pack assembly, and gas reduction. These innovations aim to enhance the overall efficiency, reliability, and lifespan of battery systems.

Patent applications for CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED on October 12th, 2023

SUPPORT, BATTERY ASSEMBLY, ELECTRIC DEVICE, AND BATTERY SWAPPING SYSTEM (18208897)

Main Inventor

Wenhui ZHANG

Brief explanation

This application is about a support system for batteries, specifically designed for use in a battery swapping system. The support system includes a support body and a magnetic element. The support body is designed to hold a battery, while the magnetic element is mounted on the support body. The magnetic element is used for detection by a positioning apparatus in a battery swapping device, allowing for accurate positioning of the support body and the battery swapping device.

Abstract

This application provides a support, a battery assembly, an electric device, and a battery swapping system, and relates to the field of batteries. The support may include a support body and a magnetic element, where the support body may be configured for mounting a battery. The magnetic element may be mounted on the support body, where the magnetic element may be configured for detection by a positioning apparatus of a battery swapping device, for positioning the support body and the battery swapping device.

REWIND SYSTEM (18333365)

Main Inventor

Qiwen SHI

Brief explanation

The abstract describes a rewind system that consists of a conveyor assembly and a rewind apparatus. The conveyor assembly is designed to move strips along different paths, and each path can accommodate at least one strip. The rewind apparatus includes a drum and multiple shafts. Each strip on a path is wound around one of the shafts. Importantly, adjacent shafts do not wind strips at the same time. The drum can rotate around its axis, and after rotating by a specific angle, it switches each strip from one shaft to another.

Abstract

A rewind system includes a conveyor assembly and a rewind apparatus. The conveyor assembly is configured to convey strips along a plurality of paths each configured to convey at least one strip. The rewind apparatus includes a drum and a plurality of shafts. The strip on each path is rewound around one of the shafts. Two adjacent shafts do not take up strips simultaneously. The drum is configured to rotate around an axis of the drum. The drum is configured to switch each of the strips on different paths from one shaft onto another shaft after the drum rotates by a predetermined angle.

POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREOF, AND SECONDARY BATTERY INCLUDING SAME (18326025)

Main Inventor

Qiang Chen

Brief explanation

The abstract describes a positive electrode material for batteries. It consists of a core and a shell layer. The core has a molecular formula of LiNiCoMnM1O, where x is between 0.8 and 1.0, y is between 0 and 0.2, a is between 0 and 0.1, z is between 0 and 0.1, and M1 can be Al, Ta, or B. The shell layer has a molecular formula of LiCoA1NbM2O, where m is between 0.85 and 1.0, n is between 0 and 0.15, b is between 0 and 0.1, 1-m-n is between 0.001 and 0.02, c is between 0 and 0.05, and M2 can be W, Mo, Ti, Zr, Y, or Yb.

Abstract

A positive electrode material, including a core and a shell layer are provided. In some embodiments, a molecular formula of the core is LiNiCoMnM1O, 0.8≤x<1.0, 0<y<0.2, 0<a<0.1, 0≤z<0.1, and M1 is selected from at least one of Al, Ta, and B; and a molecular formula of the shell layer is LiCoA1NbM2O, 0.85≤m<1.0, 0<n<0.15, 0<b<0.1, 0.001≤1-m-n≤0.02, 0≤c<0.05, and M2 is selected from at least one of W, Mo, Ti, Zr, Y, and Yb.

ELECTROLYTIC COPPER FOIL AND PREPARATION METHOD THEREFOR, NEGATIVE ELECTRODE PLATE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND POWER CONSUMING DEVICE (18334552)

Main Inventor

Yukun WU

Brief explanation

The abstract describes a method for preparing an electrolytic copper foil. This method involves placing an anode and a cathode in an electroplating tank filled with a twin crystal growth agent and an electroplating solution. The electroplating solution undergoes alternating transitions of ultrasonic waves at different frequencies. Direct current electroplating is then performed to produce the electrolytic copper foil. The specific frequencies used in the process are f11, f12, f21, and f22, with f11 being greater than 40 kHz, f12 ranging from 15 kHz to 40 kHz, f21 ranging from 0 kHz to 15 kHz, and f22 being 0 kHz.

Abstract

A method for preparing an electrolytic copper foil includes placing an anode and a cathode to be plated in a twin crystal growth agent containing electroplating solution in an electroplating tank, and, under conditions that the electroplating solution is provided with randomly alternating transitions of one or two of an ultrasonic wave at a frequency f11 and an ultrasonic wave at a frequency f12 and one or two of an ultrasonic wave at a frequency f21 and an ultrasonic wave at a frequency f22, performing direct current electroplating to obtain the electrolytic copper foil, wherein f11>40 kHz, 15 kHz<f12≤40 kHz, 0 kHz<f21≤15 kHz, and f22=0 kHz.

DETECTION METHOD AND DETECTION DEVICE FOR BATTERY, BATTERY MANAGEMENT SYSTEM, AND STORAGE MEDIUM (18207685)

Main Inventor

Lan XIE

Brief explanation

This abstract describes a method and device for detecting an internal short circuit condition in a battery. The method involves acquiring the current voltage of the battery and sending a charging request to a charging device, specifying a lower voltage than the current voltage. The charging device then outputs the requested voltage to the battery, and the current of the battery is measured during this time. Based on the measured current, the method determines whether there is an internal short circuit in the battery.

Abstract

Embodiments of the present application provide a detection method and detection device for a battery, a battery management system, and a storage medium. The method may include: acquiring a current voltage of a battery; sending a charging request to a charging device, the charging request including a requested voltage, the charging request being used to request the charging device to output the requested voltage to the battery, where the requested voltage may be smaller than the current voltage; acquiring a current of the battery within a duration in which the charging device outputs the requested voltage to the battery; and determining an internal short circuit condition of the battery according to the current.

AGV SCHEDULING CONTROL SYSTEM AND METHOD (18137366)

Main Inventor

Deqiang SHI

Brief explanation

The present application describes an AGV (Automated Guided Vehicle) scheduling control system and method. The system includes an AGV scheduling controller, an AGV, and a server. The AGV scheduling controller generates scheduling instructions for the AGV, which then executes tasks based on these instructions. The server facilitates communication between the AGV scheduling controller and the AGV, and also provides compatibility with AGVs from different manufacturers. Additionally, the system includes virtual counterparts of the AGV scheduling controller and the AGV, known as digital twins. These virtual entities can be controlled using the same programs as their real counterparts.

Abstract

The present application provides an AGV scheduling control system and method. The AGV scheduling control system includes: an AGV scheduling controller configured to generate an AGV scheduling instruction; an AGV configured to execute a task according to the AGV scheduling instruction; and a server that is communicatively coupled with the AGV scheduling controller and the AGV respectively, the server being configured to transfer messages between the AGV scheduling controller and the AGV, and provide adaptation to AGVs from different manufacturers. The AGV scheduling control system in the present application further includes a virtual AGV scheduling controller and a virtual AGV that serve as digital twins of the AGV scheduling controller and the AGV, and the programs used to control the virtual entity and the real entity are equivalently exchangeable.

METHOD AND SYSTEM FOR GENERATING IMAGE SAMPLE HAVING SPECIFIC FEATURE (18332289)

Main Inventor

Guannan JIANG

Brief explanation

This application describes a method and system for creating an image sample with a specific feature. It involves training a generative adversarial network (GAN) model, which consists of a generator and two discriminators. The discriminators are responsible for analyzing the image globally and locally, while the generator generates the image samples. The trained generator takes in a semantic segmentation image that indicates the location of the specific feature and a corresponding real image without the feature. It then produces a generated image sample that includes the specific feature.

Abstract

The present application provides a method and a system for generating an image sample having a specific feature. The method includes: training a generative adversarial network-based sample generation model, where the generative adversarial network includes a generator and two discriminators: a global discriminator configured to perform global discrimination on an image, and a local discriminator configured to perform local discrimination on a specific feature; and inputting, to a trained generator that serves as a sample generation model, a semantic segmentation image that indicates a location of the specific feature and a corresponding real image not having the specific feature, to obtain a generated image sample having the specific feature.

POSITIVE ELECTRODE ACTIVE MATERIAL, A PREPARATION METHOD THEREFOR, AND A POSITIVE ELECTRODE PLATE, A SECONDARY BATTERY AND A POWER CONSUMING DEVICE CONTAINING THE SAME (18337127)

Main Inventor

Qingyan MA

Brief explanation

The abstract describes a positive electrode active material that has a core-shell structure. The inner core of the material is made up of a chemical compound called LiMnAPRO. The inner core is then coated with multiple layers, including a first, second, third, and fourth coating layer.

Abstract

A positive electrode active material has a core-shell structure including an inner core and a shell coating the inner core. The inner core has a chemical formula of LiMnAPRO. The shell includes a first coating layer coating the inner core, a second coating layer coating the first coating layer, a third coating layer coating the second coating layer, and a fourth coating layer coating the third coating layer.

SINGLE-CRYSTALLINE LOW-COBALT TERNARY MATERIAL, METHOD FOR PREPARING SAME, SECONDARY BATTERY, BATTERY PACK, AND POWER CONSUMPTION APPARATUS (18324592)

Main Inventor

Huan NI

Brief explanation

The abstract describes a new type of positive material for batteries, specifically a low-cobalt ternary positive material. The material has a specific chemical formula and a low mole fraction of cobalt. The ratio of cobalt content in the outer layer of the material to the inner core is also specified. This material has improved stability and performance at low temperatures and high voltages, leading to better cycle performance and power output in batteries. The abstract also mentions a method for preparing the material, as well as its potential applications in secondary batteries, battery modules, battery packs, and power consumption devices.

Abstract

A single-crystalline-structured low-cobalt ternary positive material, a chemical formula thereof is Li(NiCoMn)MOA, where a mole fraction of Co element is low. 0.05 ≤ b ≤ 0.14; and in a single particle, a ratio of an average Co content per unit area of an outer layer to an average Co content per unit area of an inner core in a cross section passing through a geometric center of the particle is in a range 1.2-5.0:1, optionally, in a range 1.4-2.0:1 is disclosed. The material has better structural stability and dynamic performance at low temperature and high voltage, which improves cycle performance and power performance of the secondary battery at low temperature and high voltage. A method for preparing the low-cobalt ternary positive material, a secondary battery, a battery module, a battery pack, and a power consumption apparatus including the material is also disclosed

NEGATIVE ELECTRODE SHEET OF SODIUM-ION BATTERY, ELECTROCHEMICAL APPARATUS AND ELECTRONIC DEVICE (18196904)

Main Inventor

Yuqun Zeng

Brief explanation

The abstract describes a new type of negative electrode sheet for a sodium-ion battery. This sheet consists of a negative electrode current collector with a thin layer of carbon material coating on its surface. The thickness of the carbon material coating is 10 µm or less. The coating is made up of a carbon material and a polymer binder. This new electrode sheet can be used in electrochemical devices and electronic devices.

Abstract

The present application provides a negative electrode sheet of a sodium-ion battery, an electrochemical apparatus and an electronic device, wherein the negative electrode sheet comprises a negative electrode current collector and a carbon material coating formed on at least part of a surface of the negative electrode current collector. The thickness of the carbon material coating is less than or equal to 10 µm, and the carbon material coating comprises a carbon material and a polymer binder.

MULTILAYER ELECTRODE PLATE AND NEGATIVE ELECTRODE USING SAME, BATTERY AND POWER CONSUMING DEVICE (18208335)

Main Inventor

Fang LUO

Brief explanation

The abstract describes a new type of electrode plate for a battery, as well as a battery and a power consuming device that use this electrode plate. The electrode plate consists of a substrate, a binding layer, and a barrier layer. The binding layer and barrier layer are stacked on top of each other, with the binding layer made of a first binder and the barrier layer made of a multi-component copolymer and an optional second binder. The multi-component copolymer is a linear copolymer.

Abstract

The present application discloses an electrode plate for a battery, a battery and a power consuming device. The electrode plate for a battery may comprise: a substrate, at least one binding layer and at least one barrier layer laminated in sequence on the substrate, wherein the binding layer and the barrier layer may be distributed alternately in the thickness direction; the binding layer may comprise a first binder; and the barrier layer may comprise a multi-component copolymer different from the first binder and an optional second binder, identical to or different from the first binder in the binding layer, wherein the multi-component copolymer may be a linear multi-component copolymer.

HEATING DEVICE, AND BATTERY MANUFACTURING APPARATUS AND METHOD (18208899)

Main Inventor

Zhiyang WU

Brief explanation

The abstract describes a heating device used in a battery manufacturing process. The device is designed to heat a material strip before it reaches a specific station. It consists of a support, a movable heater, and a driver that moves the heater along the direction of the material strip. The heater can be positioned close to or away from the station as needed.

Abstract

The present application relates to a heating device, and a battery manufacturing apparatus and method, and relates to the technical field of battery manufacturing. The heating device is configured to heat a material strip upstream of a first station, and may include: a support; a first heater movably mounted to the support; and a first driver mounted to the support and configured to drive the first heater to move in a feeding direction of the material strip, such that the first heater is movable between a first position close to the first station and a second position away from the first station.

WINDING NEEDLE SLEEVE, BATTERY UNIT, BATTERY, POWER CONSUMING DEVICE, AND WINDING DEVICE (18331598)

Main Inventor

Xiaowei ZHANG

Brief explanation

The present application describes a winding needle sleeve, battery unit, battery, power-consuming device, and winding device. The winding needle sleeve has a through slot that allows for radial expansion or contraction. This solves the problem in the prior art where an electrode assembly collapses, leading to wrinkling of the electrode assembly's surface and lithium deposition, which can be a safety hazard.

Abstract

The present application discloses a winding needle sleeve, a battery unit, a battery, a power-consuming device and a winding device. A wall of the winding needle sleeve is provided with a through slot extending through the wall. The through slot extends from one end to the other end of the winding needle sleeve, so as to allow expansion or contraction of the winding needle sleeve in a radial direction. The technical solution provided by the present application can solve the problem in the prior art that an electrode assembly collapses due to expansion and contraction thereof, resulting in wrinkling of a surface of the electrode assembly and the phenomenon of lithium deposition, thus causing potential safety hazards.

SECONDARY BATTERY, ELECTROLYTE, AND APPARATUS COMPRISING THE SECONDARY BATTERY (18208898)

Main Inventor

Bin JIANG

Brief explanation

The abstract describes a secondary battery and its electrolyte, as well as an apparatus that includes the battery. The battery includes an electrolyte that contains an organic solvent, specifically a cyclic carbonate and a chain carbonate. The mass ratio of the cyclic carbonate to the chain carbonate is between 25:75 and 32:68. The chain carbonate includes dimethyl carbonate, with a mass percentage of dimethyl carbonate in the chain carbonate between 9% and 50%. The mass percentage of a carboxylic acid ester in the organic solvent is less than 5%. This secondary battery is capable of providing excellent low-temperature power, long service life, and cycle performance.

Abstract

The present application provides a secondary battery, an electrolyte, and an apparatus including the secondary battery. The secondary battery of the present application includes an electrolyte, characterized in that the electrolyte includes an organic solvent, and the organic solvent includes a cyclic carbonate and a chain carbonate; the mass ratio of the cyclic carbonate and the chain carbonate is from 25:75 to 32:68; the chain carbonate includes dimethyl carbonate; the mass percentage of the dimethyl carbonate in the chain carbonate is greater than or equal to 9 wt % and less than 50 wt %; wherein based on the total mass of the organic solvent, the mass percentage of a carboxylic acid ester is less than 5 wt %. The secondary battery of the present application can simultaneously obtain excellent low-temperature power, long service life and cycle performance.

COLD PRESS PRESSURE CONTROL METHOD AND ELECTRONIC DEVICE (18317554)

Main Inventor

Xiaoyun FAN

Brief explanation

The abstract describes a method for controlling the pressure in a cold press machine used for cold pressing pole pieces. The method involves measuring the current thickness of the pole piece and the rolling speed of the cold press. Based on these measurements and predetermined relationships, the method determines the appropriate output pressure or adjust pressure for the cold press. The cold press is then controlled to apply the pressure accordingly during the next pressing cycle. The abstract also mentions the availability of an electronic device to implement this method.

Abstract

A cold press pressure control method includes: acquiring a current thickness of a cold-pressed pole piece and a current rolling speed of a cold press at the moment; determining a cold press output pressure or a cold press adjust pressure corresponding to the current thickness of the pole piece and the current rolling speed of the cold press according to the current thickness of the cold-pressed pole piece and the current rolling speed of the cold press at the moment, as well as a preset first association relationship or a preset second association relationship; and controlling the cold press to perform pressure output according to the cold press output pressure or the cold press adjust pressure, so that at the next moment, the cold press performs cold pressing on the pole piece according to the cold press output pressure. An electronic device for implementing the method is also provided.

SECONDARY BATTERY AND PREPARATION METHOD THEREOF AND BATTERY MODULE, BATTERY PACK AND DEVICE COMPRISING THE SECONDARY BATTERY (18321778)

Main Inventor

Yiyang Wu

Brief explanation

The abstract describes a secondary battery and its preparation method, as well as a battery module, battery pack, and device that include this secondary battery. The secondary battery consists of an electrode assembly, which includes a main body part and a tab extending from it. The negative electrode plate within the electrode assembly is composed of a negative electrode current collector and a negative electrode film layer. The negative electrode film layer is made up of a first region and two second regions on either side of the first region. The first region contains a first negative electrode active material, specifically artificial graphite. The second regions contain a second negative electrode active material, which is graphite.

Abstract

A secondary battery and a preparation method thereof and a battery module, a battery pack and a device comprising the secondary battery are provided. The secondary battery comprises an electrode assembly, which comprises a main body part and a tab extending from the main body part, which comprises a negative electrode plate, and the negative electrode plate comprises a negative electrode current collector and a negative electrode film layer provided on at least one surface of the negative electrode current collector, wherein the negative electrode film layer comprises a first region and second regions provided on both sides of the first region in the extension direction of the tab, the first region comprises a first negative electrode active material, the first negative electrode active material comprising artificial graphite, and each of the second regions comprises a second negative electrode active material, the second negative electrode active material comprising graphite.

BATTERY, AND METHOD AND APPARATUS FOR CURBING BATTERY GASSING (18206560)

Main Inventor

Bobing HU

Brief explanation

This application describes a battery and a method for reducing battery gassing. The battery includes a housing, positive and negative electrode plates, and a non-aqueous electrolyte. Inside the housing, there is a gas reducer made of alkali metal or alkali metal alloy. The gas reducer is not in contact with or connected to the negative electrode plate. The method involves placing the gas reducer inside the battery housing without any contact or electrical connection to the negative electrode plate. This battery design has a simple structure, is not affected by gas scale, allows for timely degassing, and has a high degassing capacity.

Abstract

This application provides a battery, and a method and apparatus for curbing battery gassing, and pertains to the field of battery technologies. The battery includes a battery housing, a positive electrode plate, a negative electrode plate, and a non-aqueous electrolyte. A gas reducer is disposed inside the battery housing, the gas reducer includes at least one of alkali metal and alkali metal alloy, and the gas reducer is in no contact with or in non-electrical contact with the negative electrode plate. The apparatus is provided with the foregoing battery. The method for curbing battery gassing includes disposing the gas reducer inside the battery housing, such that the gas reducer is in no contact with or in non-electrical contact with the negative electrode plate. Such battery features simple configuration, no limitation from gas scale effect, timely degassing, and high degassing capacity.

BATTERY CELL, BATTERY, ELECTRICAL APPARATUS, AND METHOD AND SYSTEM FOR MANUFACTURING BATTERY CELL (18328763)

Main Inventor

Qineng Zhong

Brief explanation

The abstract describes a battery cell and its components, as well as a method and system for manufacturing the battery cell. The battery cell includes a case with an opening, an electrode assembly inside the case, and an end cover assembly to close the opening. The end cover assembly consists of an end cover, an insulating member, and a connection adapter member. The end cover has an electrode terminal and is connected to the case. The insulating member is placed on one side of the end cover facing the electrode assembly, and the connection adapter member is used to establish electrical connections between the electrode terminal and the electrode assembly. Additionally, a buffer member is provided on one side of the insulating member facing the electrode assembly.

Abstract

A battery cell, a battery, an electrical apparatus, and a method and a system for manufacturing a battery cell are provided. The battery cell comprises: a case having an opening; an electrode assembly provided within the case; an end cover assembly for closing the opening, wherein the end cover assembly comprises an end cover, an insulating member and a connection adapter member, the end cover is provided with an electrode terminal, and is configured to cover the opening and is connected to the case, the insulating member is provided on one side of the end cover facing the electrode assembly, and the connection adapter member is used for being electrically connected to the electrode terminal and to the electrode assembly; and a buffer member provided on one side of the insulating member facing the electrode assembly.

BATTERY STORAGE DEVICE AND OILING METHOD (18213722)

Main Inventor

Ling SHUAI

Brief explanation

The present application describes a battery storage device and an oiling method for maintaining and prolonging the service life of a battery's connecting element. The battery storage device includes a rack for holding the battery and an oiling mechanism for lubricating the connecting element. The oiling method involves using this device to oil and maintain the connecting element of the battery. Overall, this application provides a solution for improving the longevity of battery components.

Abstract

The present application relates to a battery storage device and an oiling method, and belongs to the technical field of battery overhauling and maintenance. The present application provides a battery storage device for storing a battery and charging the battery, and the battery has a connecting element for being connected to an electrical apparatus. The battery storage device includes: a battery placement rack; and an oiling mechanism arranged on the battery placement rack and used for oiling the connecting element. The present application further provides an oiling method. By using the battery storage device and the oiling method provided in the present application, the connecting element of the battery can be oiled and maintained, and the service life of the connecting element of the battery is prolonged.

BATTERY MODULE, BATTERY, POWER CONSUMPTION DEVICE, AND METHOD AND DEVICE FOR PRODUCING BATTERY (18333292)

Main Inventor

Zhanyu SUN

Brief explanation

This abstract describes a battery module that consists of multiple battery cell columns and spacer plates. The battery cell columns are arranged in a perpendicular direction and each column contains several battery cells. The spacer plates are placed between adjacent battery cell columns and are securely attached to the battery cells. The spacer plate has a fixing structure at one end to connect it to a box body that holds the battery module.

Abstract

A battery module includes N battery cell columns and N−1 spacer plates. Each of the N battery cell columns includes a plurality of battery cells arranged in a first direction. The N battery cell columns are arranged in a second direction. N is an integer greater than 1, and the first direction being perpendicular to the second direction. A spacer plate extends in the first direction and is disposed between two adjacent battery cell columns of the N battery cell columns. The spacer plate is fixedly coupled to each battery cell in the two adjacent battery cell columns. An end part of the spacer plate in the first direction is provided with a fixing structure, and the fixing structure is configured to fix the spacer plate to a box body configured to accommodate the battery module.

BATTERY PACK AND VEHICLE (18335648)

Main Inventor

Lei YU

Brief explanation

This application describes a battery pack for a vehicle. The battery pack consists of a box and a cell module. The box has a cavity with an opening on one side, and the cell module is placed inside the cavity. The cavity's inner sidewall has several spaced-apart limiting grooves, while the cell module's outer sidewall has corresponding convex ribs that fit into the grooves. A potting clearance, which connects to the opening, is formed by a section of the cavity's inner sidewall and a section of the cell module's outer sidewall. The design ensures that the inner sidewall of the cavity avoids the limiting grooves, and the outer sidewall of the cell module avoids the convex ribs.

Abstract

This application relates to a battery pack and a vehicle. The battery pack includes a box and a cell module. The box contains a cavity with an opening on one side. The cell module is accommodated in the cavity. A plurality of limiting grooves are spaced apart on an inner sidewall of the cavity. Convex ribs in one-to-one correspondence with and in fit with the limiting grooves are disposed on an outer sidewall of the cell module. A potting clearance that communicates with the opening is defined by a part of the inner sidewall of the cavity and a part of the outer sidewall of the cell module. The part of the inner sidewall of the cavity is configured to avoid the limiting grooves, and the part of the outer sidewall of the cell module is configured to avoid the convex ribs.

PRESSURE RELIEF APPARATUS, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE (18333167)

Main Inventor

Wenlin ZHOU

Brief explanation

The abstract describes a pressure relief apparatus that has two surfaces, a first surface and a second surface. The apparatus also has multiple stages of score grooves arranged in a sequential manner from the first surface to the second surface. The score grooves are arranged such that one stage of score groove, which is farther from the first surface, is positioned on the bottom surface of another stage of score groove, which is closer to the first surface.

Abstract

A pressure relief apparatus includes a pressure relief part having a first surface and a second surface opposite to each other in a thickness direction of the pressure relief part, and a plurality of stages of score grooves sequentially arranged on the pressure relief part in a direction from the first surface to the second surface. Of two adjacent stages of score grooves in the thickness direction, one stage of score groove that is farther from the first surface is arranged on a bottom surface of another stage of score groove that is closer to the first surface.

COMPOSITE SEPARATOR, ELECTROCHEMICAL ENERGY STORAGE APPARATUS, AND ELECTRICAL APPARATUS (18202293)

Main Inventor

Manman WANG

Brief explanation

The present application describes a composite separator for electrochemical energy storage devices. The separator consists of two base films with an anode protection layer in between. This layer is designed to capture transition metal ions and prevent them from damaging the anode. The arrangement of the anode protection layer ensures that it remains intact and effective even after prolonged use of the energy storage device. This improves the overall performance and application of the device.

Abstract

The present application provides a composite separator, an electrochemical energy storage apparatus, and an electrical apparatus. The composite separator provided in a first aspect of the present application may comprise: a first base film and a second base film; and an anode protection layer located between the first base film and the second base film in a thickness direction of the composite separator, for capturing transition metal ions. The anode protection layer for capturing transition metal ions may be arranged between the first base film and the second base film to prevent the anode protection layer from falling off from an outer surface of the base films during prolonged use, so that the anode protection layer can have more stable anode protection effects in prolonged use of the electrochemical energy storage apparatus, and improve the application performance of the electrochemical energy storage apparatus.

BATTERY CELL, BATTERY AND ELECTRICAL APPARATUS (18202308)

Main Inventor

Yanchao ZHANG

Brief explanation

This abstract describes a battery cell that has a case with an opening, and an end cover assembly that closes the opening. The end cover assembly has a liquid injection hole, which is made up of a first hole segment. The battery cell also includes a rivet, which consists of a nail cap and a nail body. The nail body passes through the first hole segment, with the nail cap located on the side of the first hole segment that is away from the inside of the case. A sealer is placed between the nail cap and the end cover assembly to seal the first hole segment.

Abstract

A battery cell may comprise: a case having an opening; an end cover assembly for closing the opening, wherein the end cover assembly may be provided with a liquid injection hole, and the liquid injection hole may comprise a first hole segment; a rivet, comprising a nail cap and a nail body, wherein the nail body may pass through the first hole segment, and the nail cap may be located on the side of the first hole segment away from the interior of the case; and a sealer, disposed between the nail cap and the end cover assembly, for sealing the first hole segment.

METHOD FOR CHARGING POWER BATTERY AND BATTERY MANAGEMENT SYSTEM (18209491)

Main Inventor

Shan HUANG

Brief explanation

This abstract describes a method and system for charging a power battery and managing its performance. The method involves determining a safe threshold for the negative electrode potential of the battery based on its charging mode. During the charging process, the negative electrode potential is monitored, and the charging current is adjusted accordingly to ensure the battery's safety.

Abstract

Embodiments of the present application provide a method for charging a power battery and a battery management system. The method may be applied to a battery management system for the power battery, and the method may comprise acquiring a charging mode of the power battery; determining a negative electrode potential safety threshold for the power battery according to the charging mode of the power battery; acquiring a negative electrode potential of the power battery during a charging process for the power battery; and adjusting a charging current for the power battery based on the negative electrode potential of the power battery and the negative electrode potential safety threshold.

PEROVSKITE SOLAR CELL, ENCAPSULATION METHOD THEREOF, AND PHOTOVOLTAIC ASSEMBLY CONTAINING SAME (18333211)

Main Inventor

Bao TU

Brief explanation

The abstract describes the structure and components of a perovskite solar cell. It consists of several layers, including a transparent conductive glass substrate, a first transport layer, a perovskite layer, a second transport layer, a conductive electrode, and a back plate glass. The solar cell also includes an encapsulating adhesive. The transparent conductive glass substrate, back plate glass, and encapsulating adhesive create an enclosed space. This enclosed space contains a mixture of an inert gas and a methylamine gas, with a volume ratio ranging from 9:1 to 5:5.

Abstract

A perovskite solar cell includes following components provided successively from bottom to top: a transparent conductive glass substrate, a first transport layer, a perovskite layer, a second transport layer, a conductive electrode, and a back plate glass. The perovskite solar cell further includes an encapsulating adhesive. The transparent conductive glass substrate, the back plate glass, and the encapsulating adhesive form an enclosed space. The enclosed space contains a mixture of an inert gas and a methylamine gas, where a volume ratio of the inert gas to the methylamine gas is in a range from 9:1 to 5:5.