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High voltage battery cell

A technology of high-voltage batteries and battery cells, which is applied in the direction of batteries, electrical components, secondary batteries, etc., can solve problems such as destruction, damage to battery stacks, and performance degradation of efficient single cells, and achieve the effect of avoiding local overvoltage

Pending Publication Date: 2022-02-18
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Efficiency or cell performance is reduced due to increased internal cell pressure, which causes the individual cell layers to swell
Furthermore, in this case the cells or the entire cell stack can be damaged or even completely destroyed

Method used

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  • High voltage battery cell
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  • High voltage battery cell

Examples

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Embodiment Construction

[0061] figure 1 An electrically driven or electrically drivable motor vehicle 2 , in particular an electric vehicle or a hybrid vehicle, is shown schematically and in simplified form. Motor vehicle 2 has an internal electrochemical energy store in the form of a vehicle battery 4 , which is designed as a traction battery. The vehicle battery pack 4 here has a plurality of interconnected battery modules 6 , wherein the figure 1 Exemplarily only four battery modules 6 are schematically shown in FIG. For charging the vehicle battery 4 or the battery modules 6 , a charging interface 8 of the motor vehicle 2 is provided, via which the motor vehicle 2 can be electrically connected, for example, to a charging cable 10 . During the charging process, the vehicle battery pack 4 is charged with a charging current.

[0062] The battery modules 6 each have at least one high-voltage battery cell 12 . exist figure 2 The high-voltage battery unit 12 shown separately in FIG. 2 has a cell ...

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PUM

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Abstract

The invention relates to a high-voltage battery cell (12), comprising a cell stack (16) having a plurality of electrochemical cell elements (20) arranged in a stacking direction (S), the cell elements (20) being connected on both sides on the end sides by a current collector (28), the cell elements (20) being surrounded on the circumferential sides by a frame (30), wherein the frame (30) is connected to form a sealed housing (14) of the cell stack (16), and wherein the housing (14) has at least one pressure compensation element (32).

Description

technical field [0001] The invention relates to a high-voltage battery unit of a battery having a cell stack with a plurality of electrochemical cells arranged along the stacking direction. The invention also relates to a battery module of a vehicle battery pack and a vehicle battery pack. Background technique [0002] Electric or motor-driven or propellable motor vehicles, such as electric vehicles or hybrid vehicles, typically include an electric motor by which one or both axles can be driven. To provide electrical energy, the electric motor is usually connected to a (high-voltage) battery pack inside the vehicle as an electrical energy store. [0003] An especially electrochemical battery is to be understood here and below in particular as a so-called secondary battery (ie a rechargeable battery) of a motor vehicle. In such (secondary) vehicle batteries, the chemical energy consumed can be recovered by an electrical charging process. Such vehicle batteries are designed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M50/258H01M50/249B60L50/64
CPCH01M10/0418H01M10/0468H01M50/258H01M50/249B60L50/64H01M50/30H01M50/209H01M50/233H01M50/24H01M2220/20Y02E60/10Y02P70/50Y02T10/70
Inventor M.赫尔曼
Owner VOLKSWAGEN AG