Toyota jidosha kabushiki kaisha (20240204258). METHOD FOR INSPECTING BATTERY AND METHOD FOR PRODUCING BATTERY simplified abstract

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METHOD FOR INSPECTING BATTERY AND METHOD FOR PRODUCING BATTERY

Organization Name

toyota jidosha kabushiki kaisha

Inventor(s)

Toshinori Okura of Toyota-shi (JP)

Kiwamu Kobayashi of Anjo-shi (JP)

Tadashi Teranishi of Toyota-shi (JP)

Hideto Mori of Nisshin-shi (JP)

METHOD FOR INSPECTING BATTERY AND METHOD FOR PRODUCING BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240204258 titled 'METHOD FOR INSPECTING BATTERY AND METHOD FOR PRODUCING BATTERY

The present disclosure introduces a method for inspecting a battery to accurately determine the presence or absence of a short circuit.

  • The method involves preparing an electrode assembly with cathode and anode active material layers.
  • A liquid electrolyte is injected into the electrode assembly to create a battery with multiple power generation units connected in series.
  • The battery is sealed under reduced pressure.
  • The presence of a short circuit is determined by measuring the voltage of the power generation unit or the battery at atmospheric pressure.
  • A short circuit is identified if the voltage is 0V for the power generation unit or lower than a reference value for the battery.

Potential Applications: - Battery manufacturing industry - Quality control processes for batteries - Research and development in energy storage technologies

Problems Solved: - Accurate detection of short circuits in batteries - Ensuring battery safety and performance - Streamlining inspection processes in battery production

Benefits: - Enhanced safety in battery usage - Improved reliability of battery systems - Cost-effective quality control measures

Commercial Applications: Title: Advanced Battery Inspection Method for Enhanced Safety This technology can be utilized in battery manufacturing plants to ensure the quality and safety of battery products. It can also be integrated into research facilities focusing on energy storage technologies to streamline testing processes and enhance overall efficiency.

Prior Art: Readers interested in exploring prior art related to this technology can start by looking into patents or research papers on battery inspection methods, electrolyte injection processes, and short circuit detection in energy storage devices.

Frequently Updated Research: Researchers in the field of battery technology are constantly working on improving inspection methods to enhance battery safety and performance. Stay updated on the latest advancements in battery testing and quality control processes to incorporate cutting-edge techniques into your work.

Questions about Battery Inspection Method: 1. How does this method compare to traditional battery inspection techniques? This method offers a more accurate and reliable way to detect short circuits in batteries, ensuring enhanced safety and performance.

2. What are the key parameters to consider when determining the presence of a short circuit in a battery? The voltage measurements of the power generation unit and the battery play a crucial role in identifying potential short circuits, providing valuable insights into the battery's condition.


Original Abstract Submitted

it is an object of the present disclosure to provide a method for inspecting a battery in which the presence or absence of a short circuit can be determined with high accuracy. the above object is achieved by providing a method for inspecting a battery, the method comprising: a preparing step, a liquid injection step, a sealing step, and a short-circuit determination step, wherein the preparing step is a step of preparing an electrode assembly including a cathode active material layer and an anode active material layer, the electrode assembly has a non-opposed region other than a region where the cathode active material layer and the anode active material layer face each other, the liquid injection step is a step of injecting a liquid electrolyte into the electrode assembly to obtain a battery having a plurality of power generation units connected in series, the sealing step is a step of sealing the battery under reduced pressure, and the short-circuit determination step is a step of determining the presence or absence of a short circuit by at least one of the following methods (i) and (ii) before an initial charging, (i) the voltage of the power generation unit is measured at atmospheric pressure, and it is determined that a short circuit has occurred in the power generation unit when the measured value of the voltage of the power generation unit is 0v, and (ii) the voltage of the battery is measured at atmospheric pressure, and it is determined that a short circuit has occurred in the battery when the measured value of the voltage of the battery is lower than a reference value obtained by multiplying the number of power generation units included in the battery by an open-circuit voltage of the power generation unit unique to a material of the cathode active material layer and a material of the anode active material layer.

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