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Battery with degassing system and method for dissipating emerging substances

A technology for exhaust systems and battery packs, applied in battery pack components, exhaust plug devices, secondary battery manufacturing, etc. Reduced weight, simplified adaptability, cost savings on installation

Inactive Publication Date: 2012-07-18
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Piping consists of many different parts, which results in high material and assembly costs
In addition, due to the large number of nodes, there is a risk of leakage and gas and electrolyte damage to the battery cell

Method used

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  • Battery with degassing system and method for dissipating emerging substances
  • Battery with degassing system and method for dissipating emerging substances
  • Battery with degassing system and method for dissipating emerging substances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] exist figure 1 A conventional battery cell 40 according to the prior art is shown in . The upper surface thereof is provided with a battery terminal 42 and a top-mounted exhaust port 44 . If the battery pack contains multiple cells, a complex piping system is required to conduct the gas and electrolyte from the exhaust port.

[0030] figure 2 A cross-sectional view of a battery pack 10 with an exhaust system according to the present invention is shown. The base plate 22 is mounted on the shell plate 28 . A shell seal 30 is provided between the shell 28 and the base plate 22 . Fastened to the base plate 22 is the battery module 12 , which here includes three battery cells 16 . Each battery cell 16 has a battery terminal 14 on an upper side 34 . Each battery cell 16 is provided with a lower air outlet 18 on a lower side 36 opposite to the upper side 34 . The vent opening 18 of the battery cell 16 is here directly sealed against the base plate 22 by an O-ring 20 . ...

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Abstract

The invention relates to a battery with a degassing system and to a method for dissipating substances emerging from a battery, by which means the gases and electrolytes which result from chemical activity can be dissipated using simple means in this way, and battery cells are protected against damage. The invention provides that the battery with the degassing system comprises a base plate (22) and at least one cell module (12) which is arranged on the base plate (22) and has at least one battery cell (16), wherein the battery cell (16) has an upper face (34), which is provided with cell terminals (14), and a lower face (36), which is provided with at least one degassing opening (18), and the base plate (22) has at least one aperture to a catchment area at the location of the at least one degassing opening (18), wherein the lower face (36) is arranged opposite the upper face (34) and the lower face (36) is arranged below the upper face (34) in the direction of the force of gravity.

Description

technical field [0001] The invention relates to a battery pack with an exhaust system and a method for draining out of a battery pack, whereby gases and electrolytes produced by chemical activity can be drained off in a manner by means of simple means, and prevent The cells of the battery pack are damaged. Background technique [0002] Battery cells, such as lithium-ion cells, require vents because certain operating conditions may cause overvoltage within the cell. In order to avoid battery cells exploding, it must be possible to vent the gases under pressure. However, since the gas may contain electrolytes, the escape of the gas may cause damage to the battery pack. These spills react with water to form hydrofluoric acid. Therefore, it is necessary to discharge the gas overflowing from the cells of the battery pack in a targeted manner. [0003] It is known to provide vents on the top of the battery module, on the side where the electrodes are located. Corresponding ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M10/04H01M50/35
CPCY02E60/12H01M10/0413H01M10/0422H01M2/12H01M2/1252Y02E60/10H01M50/30Y02P70/50
Inventor F·恩格尔R·安格尔鲍尔H·芬克
Owner ROBERT BOSCH GMBH
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