US Patent Application 18136080. SECONDARY BATTERY, ELECTRONIC EQUIPMENT, AND ELECTRIC TOOL simplified abstract
Contents
SECONDARY BATTERY, ELECTRONIC EQUIPMENT, AND ELECTRIC TOOL
Organization Name
Murata Manufacturing Co., Ltd.
Inventor(s)
Masashi Takahashi of Tokyo (JP)
SECONDARY BATTERY, ELECTRONIC EQUIPMENT, AND ELECTRIC TOOL - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18136080 Titled 'SECONDARY BATTERY, ELECTRONIC EQUIPMENT, AND ELECTRIC TOOL'
Simplified Explanation
This abstract describes a new type of battery with a low internal resistance. The battery consists of an electrode wound body, positive and negative electrode current collector plates, and an outer package. The electrode wound body is made up of stacked positive and negative electrodes with a separator in between, and is wound into a coil shape. The outer package holds the electrode wound body and the current collector plates. The negative electrode has a band-shaped foil with a section covered in a negative electrode active material layer and a section uncovered. The electrode wound body has a flat surface where the uncovered parts of the negative electrode protrude and are bent towards the center of the coil. This flat surface is connected to the negative electrode current collector plate. The negative electrode foil has two major surfaces, with the first one facing towards the center of the coil and the second one facing away. The glossiness of the first surface is denoted as G and the glossiness of the second surface is also denoted as G. It is stated that G>G, meaning that the glossiness of the first surface is greater than the glossiness of the second surface.
Original Abstract Submitted
A battery having a low internal resistance is provided. A secondary battery includes an electrode wound body, a positive electrode current collector plate, a negative electrode current collector plate, and an outer package. The electrode wound body has a structure in which a positive electrode having a band shape and a negative electrode having a band shape are stacked with a separator interposed therebetween, and are in a wound configuration. The outer package contains the electrode wound body, the positive electrode current collector plate, and the negative electrode current collector plate. The negative electrode includes, on a negative electrode foil having a band shape, a negative electrode active material covered part covered with a negative electrode active material layer, and a negative electrode active material uncovered part. The electrode wound body has a flat surface, in which portions of the negative electrode active material uncovered part that protrude from one end of the electrode wound body are bent toward a central axis of the electrode wound body to form the flat surface. The flat surface is joined to the negative electrode current collector plate. The negative electrode foil has a first major surface facing toward the central axis, and a second major surface facing away from the central axis. Where a glossiness of the first major surface is denoted as G and a glossiness of the second major surface is denoted as G, G>G is satisfied.
