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Battery module

A technology of battery modules and cell packs, applied in battery pack components, secondary batteries, circuits, etc., can solve the problem of affecting the performance of battery modules, affecting the power supply capacity of battery modules, and reducing the service life of battery modules, etc. question

Pending Publication Date: 2021-07-30
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In the prior art, the grouping of square cells mostly adopts the method of arranging the long sides side by side. However, after the battery module is used for a long time, the cells will expand, and the accumulation of expansion force of multiple cells will cause the end plate to break down. Deformation affects the performance of the battery module and has potential safety hazards; therefore, the number of cells in the existing battery module will be limited to a certain extent, which will affect the power supply capacity of the battery module
In addition, after the cell expands, the gap between adjacent cells disappears, which is not conducive to rapid heat dissipation, affects the performance of the battery module, and reduces the service life of the battery module

Method used

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Embodiment Construction

[0032] 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, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention relates to the technical field of new energy batteries, and particularly discloses a battery module. The battery module comprises a plurality of battery cell groups which are arranged at intervals along a first direction, and a cooling channel is formed by a gap between two adjacent battery cell groups; each battery cell group comprises a plurality of battery cells arranged along the second direction, the plurality of battery cells of each battery cell group are electrically connected in sequence, and two adjacent battery cell groups are electrically connected in sequence. According to the battery module, the number of the battery cells arranged in the second direction is reduced, the expansion cumulant of the battery module in the second direction is reduced, a gap exists between every two adjacent battery cell groups, and the gaps can provide sufficient deformation space for the surfaces with smaller areas in the battery cells; the deformation of the battery module along the second direction and the second direction can be reduced; the cooling channel is formed by the gap between every two adjacent battery cell groups, so that heat generated in the working process of the battery cells can be discharged in time, the use performance and the safety performance of the battery module are ensured, and the service life of the battery module is prolonged.

Description

technical field [0001] The invention relates to the technical field of new energy batteries, in particular to a battery module. Background technique [0002] With the development of new energy vehicles and energy storage technology, power battery systems are more and more widely used in the field of electric vehicles. [0003] In the prior art, the grouping of square cells mostly adopts the method of arranging the long sides side by side. However, after the battery module is used for a long time, the cells will expand, and the accumulation of expansion force of multiple cells will cause the end plate to break down. Deformation affects the performance of the battery module and poses a safety hazard; therefore, the number of cells in the existing battery module is limited to a certain extent, which affects the power supply capability of the battery module. In addition, after the cell expands, the gap between adjacent cells disappears, which is not conducive to rapid heat diss...

Claims

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Application Information

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IPC IPC(8): H01M50/242H01M50/244H01M50/249H01M50/209H01M50/258H01M50/51H01M10/613H01M10/625H01M10/6557H01M10/6562
CPCH01M10/613H01M10/625H01M10/6557H01M10/6562Y02E60/10
Inventor 刘子文
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
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