Battery module
一种电池模组、单体电池的技术，应用在电池组零部件、二次电池、二次电池制造等方向，能够解决相邻电芯失效、成本高、高达500℃等问题，达到防止失控、空气热阻提高的效果
Active Publication Date: 2018-04-27
CONTEMPORARY AMPEREX TECH CO LTD
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When thermal runaway occurs in a cell, the temperature can even reach as high as 500°C. At this time, a large amount of heat is transferred to the adjacent cell through the dense flat plate and metal side plate, causing the adjacent cell to fail.
However, the use of airgel felt for cell isolation has the problem of high cost
Method used
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Embodiment 1
[0058] A ternary NCM single battery with a length, width, and thickness of 150×100×2mm and a nominal capacity of 42Ah is configured into a 1P3S battery module, in which the separator is made of allyl compound-modified bismaleimide resin, In addition, a plurality of through holes are provided through the partition plate, and the sum of the areas of each through hole is 30% of the total area of the partition plate. Carry out the 50% nail penetration experiment of the first single battery on the battery module.
[0059] The maximum temperature of the first single cell is 500°C.
[0060] The explosion-proof valve of the second single battery was not opened, the voltage remained stable, and the maximum temperature did not exceed 249.6°C.
[0061] The maximum temperature of the third single battery does not exceed 60°C.
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Abstract
The invention provides a battery module. The battery module comprises a plurality of single batteries arranged in an arrangement direction, and a frame body used for accommodating and fixing the multiple single batteries; and the battery module also comprises partition plates, and one or more through holes which run through in the arrangement direction are formed in the partition plates, wherein the partition plates are sandwiched between at least two adjacent single batteries in the multiple single batteries. When the partition plates suffer from a heating temperature of 200 DEG C or above, the partition plates are heated and foamed to realize volume expansion; when a certain single battery suffers from thermal runaway, air thermal resistance can be formed by the through hole structures of the partition plates, so that high-amount, high-speed and large-area transfer of the heat of the out-of-control single batteries to the adjacent single batteries can be prevented, thereby realizingthermal insulation.
Description
technical field [0001] The invention relates to the field of batteries, in particular to a battery module. Background technique [0002] In the existing battery module structure, the side plate adopts a composite structure of aluminum alloy and insulating film, and the cells (or single cells) are in direct contact with each other or are isolated by a dense flat plate (rubber pad, insulating plastic). When thermal runaway occurs in a cell, the temperature can even reach as high as 500°C. At this time, a large amount of heat is transferred to the adjacent cell through the dense flat plate and metal side plate, causing the adjacent cell to fail. However, the use of airgel felt for cell isolation has the problem of high cost. Contents of the invention [0003] In view of the problems existing in the background technology, the object of the present invention is to provide a battery module. The through-hole structure of the separator can form an air thermal resistance to preven...
Claims
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IPC IPC(8): H01M2/10H01M10/613H01M10/6554H01M50/209H01M50/227H01M50/264H01M50/291
CPCH01M10/613H01M10/6554H01M50/227H01M50/291H01M50/209H01M50/264H01M10/647H01M10/658Y02E60/10Y02P70/50H01M10/0413H01M10/0486
Inventor 陈智明马林
Owner CONTEMPORARY AMPEREX TECH CO LTD