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Protective unit for battery module of high-voltage battery, battery module, and high-voltage battery

A battery module and protection unit technology, which is applied in the direction of batteries, electrical components, battery pack components, etc., and can solve problems such as battery cell damage, high-voltage battery fire, and short circuit

Pending Publication Date: 2020-12-04
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this context, damage to the battery cells can occur if the body of the motor vehicle and thus the battery cells are deformed in the event of intrusion of foreign objects, for example in the event of a motor vehicle collision or accident.
Such damage to the cells can lead to short circuits between the cells, which in turn can lead to thermal breakdown of the cells and thus fires in the high voltage battery

Method used

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  • Protective unit for battery module of high-voltage battery, battery module, and high-voltage battery
  • Protective unit for battery module of high-voltage battery, battery module, and high-voltage battery

Examples

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Embodiment Construction

[0024] figure 1 and figure 2 An exploded view of a battery module 1 for a high-voltage battery of an electrically propellable motor vehicle (not shown here) is shown. The battery module 1 here has two cell stacks 2 formed of prismatic battery cells 3 stacked on top of each other along a stacking direction S. FIG. The cell stacks 2 are arranged here transversely to the stacking direction S side by side. Each cell stack 2 is surrounded here by a cell module frame 4 . The individual module frame 4 has two pressure plates 5 , of which only one is shown here, and which are arranged on opposite sides of the cell stack 2 in the stacking direction S. FIG. In order to compress the individual battery cells 3 in the cell stack 2 , the pressure plates 5 are connected to one another via tension anchors 6 arranged opposite each other in a direction transverse to the stacking direction S of the cell stack 2 . on the side area.

[0025] The battery cell 3 has a cell housing 7 made of an...

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PUM

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Abstract

The invention relates to a protective unit (15) for a battery module (1) of a high-voltage battery of a motor vehicle for electrically insulating cell housings (7) of prismatic battery cells (3) of the battery module (1), which battery cells are stacked to form a cell stack (2), and a cell-contacting system (12) of the battery module (1), which cell-contacting system interconnects the battery cells (3) by electrically connecting cell terminals (8, 9) of the battery cells (3), the protective unit comprising pre-formed intermediate layer (16) made of an electrically insulating material, which intermediate layer can be applied to a side (11) of the cell stack (2) having the cell terminals (8, 9) and therefore can be arranged between the side (11) of the cell stack (2) having the cell terminals (8, 9) and the cell-contacting system (12) and which intermediate layer has a number of cut-outs (17) which corresponds to the number of cells terminals (8, 9), said cut-outs being provided for thefeeding through of the cell terminals (8, 9) when the intermediate layer (16) is applied to the cell stack (2). The invention further relates to a battery module (1) and to a high-voltage battery.

Description

technical field [0001] The invention relates to a protection unit for a battery module of a high-voltage battery of a motor vehicle, the protection unit is used to make the prismatic battery cells of the battery module stacked in a cell stack contact and conduction with the cells of the battery module The system is electrically insulated, and the cell contact conduction system connects the battery cells by electrically connecting the cell terminals of the battery cells, that is, the positive pole and the negative pole. The invention also relates to a battery module and a motor vehicle. Background technique [0002] The focus here is on rechargeable high-voltage batteries or high-voltage accumulators for electrically propellable motor vehicles, such as electric vehicles or hybrid vehicles. A high-voltage battery usually includes a plurality of battery cells connected into a battery module. The battery cells can be, for example, prismatic battery cells which each have a meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M2/20H01M2/12H01M50/209H01M50/249H01M50/502
CPCH01M2220/20H01M2200/00Y02E60/10H01M50/30H01M50/502Y02P70/50H01M50/249H01M50/209H01M50/24H01M2200/30H01M50/579
Inventor P·施密茨T·伊迪科特A·克拉夫基S·西林A·赫克特M·休伯P·施密特
Owner BAYERISCHE MOTOREN WERKE AG