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Prismatic secondary battery

A secondary battery, square technology, applied in the direction of secondary batteries, batteries, battery electrodes, etc., can solve the problems of deterioration of resin components such as gaskets, deterioration of electrolyte, etc.

Pending Publication Date: 2022-01-14
PANASONIC HLDG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the temperature of the battery as a whole rises excessively, it may cause deterioration of resin parts such as gaskets, deterioration of electrolyte, etc.

Method used

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  • Prismatic secondary battery
  • Prismatic secondary battery
  • Prismatic secondary battery

Examples

Experimental program
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Embodiment Construction

[0023] Embodiments of the present invention will be described in detail below based on the drawings. In addition, this invention is not limited to the following embodiment. Moreover, it can change suitably within the range which does not deviate from the range which exhibits the effect of this invention.

[0024] figure 1 (a) and (b) are diagrams schematically showing the structure of a prismatic secondary battery in one embodiment of the present invention, figure 1 (a) is the top view, figure 1 (b) is along figure 1 (a) Cross-sectional view of line Ib-Ib.

[0025] Such as figure 1 As shown in (a) and (b), in the prismatic secondary battery 1 of this embodiment, the electrode body 10 which is the power generation element is housed in the prismatic battery case 11 together with the electrolytic solution. The electrode body 10 has a structure in which a positive electrode plate and a negative electrode plate are laminated with separators (both not shown) interposed therebe...

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PUM

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Abstract

A prismatic secondary battery is provided with an electrode body comprising a positive electrode plate and a negative electrode plate, a prismatic battery case having an opening and accommodating the electrode body, a sealing plate sealing the opening, a current collector connected to an end side of the positive electrode plate or negative electrode plate at a longitudinal end of the sealing plate, and an external terminal disposed on the outside of the sealing plate and connected to the current collector, wherein the current collector is formed from a block body having a thickness in the width direction of the sealing plate and has a hole part on the sealing-plate-side end thereof, and the current collector is connected to the external terminal via a connection part inserted in the hole part.

Description

technical field [0001] The present invention relates to a prismatic secondary battery. Background technique [0002] With the increase in output of secondary batteries for vehicles, the current flowing through the batteries has increased. As a result, the amount of heat generated in the battery increases, and the temperature of the entire battery rises. If the temperature of the battery as a whole rises excessively, it may cause degradation of resin parts such as gaskets, deterioration of electrolyte solution, and the like. [0003] Patent Document 1 discloses a sealed battery (secondary battery) having a structure in which a current collector terminal (current collector) connected to a positive electrode and a negative electrode of an electrode body and an external terminal are fastened by riveting. [0004] prior art literature [0005] patent documents [0006] Patent Document 1: JP Unexamined Patent Application Publication No. 2013-105538 Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/15H01M50/176H01M50/531H01M50/528H01M50/543
CPCH01M50/533H01M50/528H01M50/536H01M50/15H01M50/176H01M50/55H01M50/557H01M50/188H01M50/184H01M50/474H01M50/486H01M50/567H01M50/566Y02E60/10H01M50/548H01M50/553H01M4/661H01M10/0525H01M10/058H01M2220/20
Inventor 村田一郎今西裕明
Owner PANASONIC HLDG CORP