Battery box
A battery box and battery technology, applied in the direction of batteries, secondary batteries, battery covers/end covers, etc., can solve the problems affecting the safety performance of battery boxes, thermal stress cracking or degumming of adhesives, etc., to prevent thermal stress cracking or The effect of degumming, meeting thermal conductivity requirements, and improving safety performance
Inactive Publication Date: 2021-02-02
CONTEMPORARY AMPEREX TECH CO
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Problems solved by technology
However, in practical applications, it is found that when the heat conduction requirements of the battery box are met, the battery box and the battery will encounter temperature changes during the actual working process, and the adhesive is prone to thermal stress cracking or degumming, which affects Improve the safety performance of the battery box
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[0037] In order to make the object, technical solution and technical effect of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.
[0038] Please refer to Figures 1 to 3 As shown, the first embodiment of the battery box of the present invention includes: a battery box 10 and a plurality of batteries 20 accommodated in the battery box 10, wherein an adhesive 40 is passed between the batteries 20 and the inner wall of the battery box 10 Bonding, the thermal expansion coefficient of the adhesive 40 is α, the unit is ppm / °C, the thermal conductivity of the adhesive 40 is β, the unit is W / mK, and α and β satisfy the relationship: 15≤α / β≤80, preferably 25≤α / β≤45.
[0039] The batte...
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Abstract
The invention discloses a battery box. The battery box comprises a battery box body and a plurality of batteries accommodated in the battery box body, the batteries and the inner wall of the battery box body are bonded through bonding glue, the thermal expansion coefficient of the bonding glue is alpha, and the unit of the coefficient is ppm / DEG C; the thermal conductivity coefficient of the bonding glue is beta, the unit of the coefficient is W / mK; and alpha and beta meet the relational expression that alpha / beta is more than or equal to 15 and less than or equal to 80. In the battery box disclosed by the invention, the battery box body and the plurality of batteries accommodated in the battery box body are bonded through the bonding glue, and the heat conductivity coefficient and the thermal expansion coefficient of the bonding glue are matched, so that the heat conduction requirement of the battery box is met, and the bonding glue can be prevented from cracking or degumming due to thermal stress caused by temperature alternation in the use process of the battery box; and therefore, the safety performance of the battery box is improved.
Description
technical field [0001] The invention belongs to the field of battery technology, and more specifically, the invention relates to a battery box with ideal safety performance. Background technique [0002] In recent years, with the continuous development and popularization of new energy vehicles, battery boxes have gradually received widespread attention and applications. Usually, a battery box includes a battery box and a plurality of batteries accommodated in the battery box. [0003] In the related art, in order to increase the overall energy density of the battery box, an adhesive is usually used to bond the battery box body and the battery. However, in practical applications, it is found that when the heat conduction requirements of the battery box are met, the battery box and the battery will encounter temperature changes during the actual working process, and the adhesive is prone to thermal stress cracking or degumming, which affects The safety performance of the bat...
Claims
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IPC IPC(8): H01M50/204H01M50/249H01M50/271H01M50/264H01M10/625H01M10/653C09J11/04C09J133/04C09J163/00C09J175/04
CPCH01M10/625H01M10/653C09J175/04C09J133/04C09J163/00C09J11/04C08K2003/2227C08K2003/385C08K3/22C08K3/38H01M50/249H01M50/204H01M50/271H01M10/613Y02E60/10H01M2220/20H01M50/202H01M10/6556H01M50/103H01M50/1245H01M50/124H01M50/209C09J7/385C09J7/38C09J7/10C09J2301/408H01M50/264H01M50/229H01M50/233C09J2203/33C09J2433/00C09J2463/00C09J2475/00C09K5/14
Inventor 陈天明陈智明
Owner CONTEMPORARY AMPEREX TECH CO
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