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Battery module

A battery module, battery technology, applied in the direction of battery, secondary battery, battery cover/end cover, etc., can solve the problems of reduced life, increased internal resistance of the unit, increased power loss, etc., to improve performance and life, prevent bending, The effect of reducing the DC internal resistance

Pending Publication Date: 2020-10-27
SK新能源株式会社
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since the length between the electrode terminals of a large-width or ultra-large-width battery cell becomes longer, the internal resistance of the cell increases, resulting in an increase in power loss, and the performance of the battery cell decreases due to the large temperature difference between regions of the battery cell , the lifetime is also reduced, and the extra-wide cells bend due to their own weight

Method used

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Embodiment Construction

[0060] The advantages and features of the embodiments of the present invention and the method for realizing these advantages and features will become more clear with reference to the following embodiments described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various ways that are different from each other. Provided that the scope of the present invention is fully conveyed, the present invention is defined only by the scope of the claims. Like reference numerals refer to like components throughout the specification.

[0061] In describing the embodiments of the present invention, if it is judged that a detailed description of a well-known function or structure would obscure the gist of the present invention, the detailed description will be omitted. Also, the terms described below are defined in consideration of functions in the embodiments of the present inve...

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Abstract

The present invention relates to a battery module including an ultra-long battery cell. The battery module according to the present invention includes: ultra-long battery cells each having opposite ends to which a plurality of electrode tabs are connected; a battery stack formed by stacking the battery cells; end-side bus bar assemblies formed at opposite ends of the battery stack, respectively, and electrically connecting the electrode tabs of the battery cells; transverse bus bar assemblies each electrically connecting electrode tabs connected to opposite ends of an uppermost battery cell ora lowermost battery cell in the battery stack; and a case accommodating the battery stack, the end-side bus bar assemblies, and the transverse bus bar assemblies. With the battery module according tothe present invention, it is possible to suppress an increase in internal resistance of the ultra-long battery cell and heating, and to improve structural stability.

Description

technical field [0001] The present invention relates to a battery module, and more particularly, to a battery module including a large-width ultra-large-width battery cell. Background technique [0002] Secondary batteries are attracting attention as power sources for electric vehicles (EVs), hybrid vehicles (HEVs) and the like proposed to solve air pollution of conventional gasoline vehicles and diesel vehicles using fossil fuels. In order to mount a secondary battery on a vehicle, it is necessary to solve the technical problem of improving the energy density and releasing the space limitation, and as a method of solving this technical problem, a large-width battery cell is proposed, and the electrode terminals of the large-width battery cell The length of the edge is significantly longer than the edge provided with the electrode joint. A general battery cell has a width of 300mm or less, whereas a large-width battery cell is designed to have a width of 600mm, and an extra...

Claims

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Application Information

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IPC IPC(8): H01M2/10H01M2/20H01M50/204H01M50/271H01M50/503H01M50/507H01M50/516H01M50/531
CPCH01M2220/20H01M10/613H01M10/6555Y02E60/10H01M50/204H01M50/507H01M50/531H01M50/516H01M50/503H01M50/271H01M10/6556H01M50/242H01M50/509H01M50/557H01M50/24H01M10/6554H01M50/211H01M10/6551H01M50/20
Inventor 郑圭辰金析敃李知锡
Owner SK新能源株式会社
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