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battery module

A technology of battery modules and battery cells, which is applied to battery pack parts, secondary batteries, circuits, etc., can solve the problems of battery pack strength and safety performance degradation, achieve good mechanical strength and electrical safety, and reduce structural parts , to achieve the effect of lightweight

Active Publication Date: 2021-09-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to reduce (or remove) some structural parts or reduce the material thickness of the structural parts in the existing battery module to realize the lightweight of the battery module, resulting in the decrease of the strength and safety performance of the battery pack, Provide a battery module

Method used

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Embodiment Construction

[0038] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] Such as Figure 1 to Figure 3 As shown, the battery module provided by an embodiment of the present invention includes a plurality of battery cells 1 and a top plate 2 stacked along a predetermined direction, the battery cells 1 include single cells 11 and insulating films 12, and the single cells The battery 11 includes a battery case 111, a battery cell disposed in the battery case 111, and a battery cover 112 disposed at the end of the battery case 111. The insulating film 12 covers the battery case. 111 on the side and bottom. The insulating films 12 of two ...

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Abstract

The invention belongs to the technical field of power batteries, and relates to a battery module, including a plurality of battery cells and a top plate stacked along a preset direction, the battery cells include a single battery and an insulating film, and the single battery includes a battery case The body, the battery cells arranged in the battery casing and the battery cover arranged at the end of the battery casing, the insulating film covers at least the side of the battery casing, and the two adjacent The insulating films of the battery cells are bonded to each other in the preset direction to connect a plurality of the battery cells together; the insulating film includes an extension part protruding from the top of the insulating film to the battery The cover plate is formed by extending upwards, the top plate is arranged on the upper side of the battery unit, the lower side of the top plate is provided with a groove, and at least part of the extension part is accommodated in the groove. The battery module in the embodiment of the present invention realizes the weight reduction of the battery module without reducing the strength of the battery module.

Description

technical field [0001] The invention belongs to the technical field of power batteries, in particular to a battery module. Background technique [0002] Improving battery energy density is an important aspect of current power battery design. Conventional methods for increasing energy density mainly include two aspects. One is to adopt materials with higher energy density through the replacement and modification of materials; the other is to make the same battery module obtain higher energy density through the design of battery structure and strategy. [0003] Improving the energy density of batteries through materials has always been the focus of current research and development of various companies, such as changing from lithium iron phosphate to ternary materials. To obtain higher energy density by changing the design of the battery structure, the usual method is lightweight and compact, especially the best lightweight method, but most of the current lightweight methods a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/258H01M50/204H01M50/209H01M50/244
CPCH01M50/209H01M10/658H01M10/6555H01M50/24H01M50/20Y02E60/10Y02P70/50H01M50/593
Inventor 沈晞鲁志佩郑卫鑫卢甲谭晶朱燕朱建华
Owner BYD CO LTD