Leak detection method of battery module and the battery module

An inspection method and battery module technology, applied in battery/battery leakage test, secondary battery, battery pack components, etc., can solve problems such as electrolyte leakage

Inactive Publication Date: 2014-07-02
AUTOMOTIVE ENERGY SUPPLY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In such a film-cased battery, when the sealing of the laminated film is insufficient, the electrolyte solution filled inside leaks

Method used

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  • Leak detection method of battery module and the battery module
  • Leak detection method of battery module and the battery module
  • Leak detection method of battery module and the battery module

Examples

Experimental program
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Embodiment Construction

[0038] Next, an embodiment of the present invention will be described in detail with reference to the drawings.

[0039] figure 1 It is an explanatory diagram showing an embodiment of the liquid leakage inspection method of the present invention, and the blower 2 and the gas sensor 3 are arranged to face each other, and the blower 2 forces the battery module 1 to be inspected on the liquid leakage inspection table in the production line. Air is introduced into the air, and the gas sensor 3 detects gas components caused by leakage of the electrolytic solution. The blower 2 and the gas sensor 3 described above are connected to a controller 4 which performs a liquid leakage check. The controller 4 includes a display 5 for displaying the result of the liquid leakage inspection, and a notifier 6 for sounding an alarm when a liquid leakage is detected.

[0040] Such as image 3 As shown, the above-mentioned battery module 1 is, for example, stacked and housed in four flat rectan...

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PUM

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Abstract

[OBJECT] An object is to inspect leak of a film-sheathed battery 21 surely in a short time in a stage in which a battery module 1 has been assembled. [SOLUTION TO PROBLEM] A battery module 1, which is formed by arranging a plurality of flat film-sheathed batteries 21 in layers and accommodating them in a case 11, has a slit at one end of a longitudinal direction, and a gas sensor 3 is inserted into this slit. A terminal portion 12 that is positioned at the other end of the longitudinal direction has a bolt hole that communicates with an inside of the case 11, and a blower 2 is connected to this bolt hole. Air is compulsorily introduced into the case 11 by the blower 2. The air passes through a periphery of the gas sensor 3, and flows out of the case 11. Therefore, the presence or absence of the leak can immediately be judged from an output of the gas sensor 3.

Description

technical field [0001] The present invention relates to a liquid leakage inspection method for inspecting electrolyte leakage of a flat film-cased battery, and more particularly to a method for accommodating a plurality of film-cased batteries in a case and inspecting the film in the case at the stage of serving as a battery module A liquid leakage inspection method for liquid leakage of a casing battery, and a battery module suitable for the liquid leakage inspection method. Background technique [0002] There is known a flat film-cased battery in which a battery element in which a plurality of electrode plates serving as positive and negative electrodes are laminated via a separator is hermetically sealed with a laminated film and filled with an electrolyte solution inside. . The laminated film includes at least a metal layer and a heat-sealing layer, and the two laminated films are heated and welded on the outer peripheral side of the battery element, thereby sealing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/04H01M10/48H01M2/02
CPCG01M3/00H01M10/48H01M10/4228Y02E60/10Y02P70/50
Inventor 矢岛久道
Owner AUTOMOTIVE ENERGY SUPPLY
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