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Square cell structure

A square cell, cell technology, applied in structural parts, circuits, electrical components, etc., can solve the problems of large cell temperature difference, slow heat dissipation, difficult thermal management of a single cell, and reduce the internal temperature difference. , the effect of increasing the heat transfer pathway

Inactive Publication Date: 2019-07-23
开沃新能源汽车集团股份有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] The present invention provides a square cell structure in order to solve the above-mentioned problems in the prior art, which can solve the problem that the internal heat accumulation cannot be dissipated or the heat dissipation speed is slow when the cell is charged and discharged, and can also solve the problem of internal heat dissipation in the cell. The temperature difference is large, and it is difficult to manage the heat of all single cells in the battery pack

Method used

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] The square battery structure of the present invention is composed of a grooved aluminum casing 1 provided with groove ribs 10 , a battery winding core 2 and a battery positive and negative pole 3 .

[0025] The battery core 2 is placed in the slotted aluminum case 1, and the number of slots in the slotted aluminum case 1 corresponds to the number of battery cores. The battery core 2 is welded to the positive and negative poles 3 of the battery through the tabs of the core. The positive and negative poles 3 of the battery cell are welded together with the grooved aluminum casing 1 through welding.

[0026] Wherein, the number of slots in the aluminum casing with slots 1 is not unique, and may be two slots, three slots or multiple slots.

[0027] Wherein, the grooved aluminum casing 1 may be cast aluminum.

[0028] Wherein, the grooved aluminum shell 1 can also...

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Abstract

The invention discloses a square cell structure composed of a grooved aluminum casing provided with grooved ribs, cell cores and cell positive and negative electrodes, wherein the cell cores are placed in the grooved aluminum casing, the number of grooves in the grooved aluminum casing corresponds to the number of the cell cores, the cell cores are welded to the cell positive and negative electrodes through core pole ears, and the cell positive and negative electrodes are integrally welded with the grooved aluminum casing. The square cell structure provided by the invention adds grooved ribs on the base of the common square cell casing, miniaturizes the common cores, increases the heat transfer pathway through the groove rib, and solves the problem that the internal heat accumulation cannot be dissipated or the heat dissipation speed is slow when the cell is charged and discharged.

Description

[0001] Technical field: [0002] The invention relates to a square electric core structure, which belongs to the field of lithium batteries. [0003] Background technique: [0004] At present, vehicle-mounted power batteries have been widely used in new energy electric vehicles, and batteries, as the most basic unit of batteries, directly determine the performance of vehicle-mounted power batteries. Since the vehicle power battery is often used in a harsh environment, its performance is closely related to the ambient temperature and its own heat dissipation. Therefore, it is very important to solve the heat dissipation problem of the power battery and the battery cell. [0005] Square batteries account for a relatively large proportion of power batteries, and there is a trend of increasing capacity. For square batteries, the common battery shell is a whole, and the inside is hollow. The heat generated by a single battery cell during charging and discharging is transmitted th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M10/613H01M10/625H01M10/04H01M50/249
CPCH01M10/613H01M10/625H01M10/0413H01M50/256H01M50/20Y02E60/10Y02P70/50
Inventor 吴迪张勇杨柳
Owner 开沃新能源汽车集团股份有限公司
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