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Battery unit and battery module

A battery unit and battery module technology, applied in battery pack components, electrical components, circuits, etc., can solve the problems of battery pack strength and safety performance degradation, achieve good mechanical strength and electrical safety, and facilitate installation and operation. Effect of saving installation space

Active Publication Date: 2019-01-15
BYD CO LTD
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  • 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, A battery unit and a battery module are provided

Method used

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Embodiment Construction

[0045] 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.

[0046] Such as figure 1 and figure 2 As shown, the battery module provided by an embodiment of the present invention includes a plurality of battery units 1 stacked along a predetermined direction, and the battery unit 1 includes a single battery 11, an insulating film 12 and an upper insulating cover 10. The single battery 11 includes a battery case (the battery case is wrapped by an insulating film 12, so it is not shown in the figure), an electric core arranged in the battery case and a battery cover arranged at the end of the battery case 112 , the upper insulatin...

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Abstract

The invention belongs to the technical field of power batteries, A battery unit and a battery module, The battery unit comprises a single battery, an insulating film and an upper insulating cover, wherein the single battery comprises a battery case, a battery cell arranged in the battery case and a battery cover plate arranged at an end of the battery case; the upper insulating cover is arranged on an upper side of the battery unit; and the insulating film is at least wrapped on a side surface of the battery case. The battery unit and the battery module of the embodiment of the invention realize the lightweight of the battery module without reducing the strength of the battery module, and at the same time, good mechanical strength and electrical safety of the battery module are maintainedwhile the structure is reduced. The battery unit and the battery module of the embodiment of the invention realize lightweight 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 unit and 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 li...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M2/10H01M50/15H01M50/155H01M50/20
CPCH01M50/15H01M50/155H01M50/20Y02E60/10
Inventor 沈晞郑卫鑫鲁志佩谭晶卢甲朱燕朱建华
Owner BYD CO LTD
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