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A system and control method for preventing liquid accumulation inside a battery pack

A control method and technology of a battery management system, applied in the field of electric vehicle power battery systems, can solve problems such as accidental liquid accumulation in battery packs, and achieve the effects of low cost, internal liquid accumulation, and simple process

Active Publication Date: 2016-01-06
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to realize a system capable of solving accidental liquid accumulation inside the battery pack

Method used

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  • A system and control method for preventing liquid accumulation inside a battery pack
  • A system and control method for preventing liquid accumulation inside a battery pack

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Embodiment Construction

[0027] see figure 1 It can be seen that the system for preventing liquid accumulation inside the battery pack in the present invention is to add a liquid level sensor 7 and a solenoid valve 9 on the bottom surface of the battery pack shell. It is composed of a plurality of lower casing bottom plates 6, and there are liquid leakage gaps between these lower casing bottom plates 6. In order to ensure the tightness of the battery pack casing, these gaps are sealed by the battery pack beam 4, as figure 2 As shown, the battery pack beam 4 has a cavity protruding from the battery pack shell, and the liquid level sensor 7 and the solenoid valve 9 are fixed in the battery pack beam 4 . Because the volume of the liquid storage tank of the battery pack beam 4 is very small, and its bottom area is designed to be small, it is very sensitive to the amount of liquid accumulation. As long as there is a small amount of liquid accumulation, the liquid level of the liquid storage tank in the ba...

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PUM

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Abstract

The invention discloses a system for preventing liquid accumulation inside the battery pack. A battery management system and a battery body are fixed inside the sealed battery pack shell. The system is connected, and the solenoid valve communicates with the inside and outside of the battery pack casing. The invention belongs to an active battery pack internal fluid accumulation prevention system, has reasonable structure, simple process, does not increase the weight of the battery pack, has low cost, and can effectively solve the problem of internal liquid accumulation in the battery pack.

Description

technical field [0001] The invention relates to the technical field of electric vehicle power battery systems. Background technique [0002] With the development of social economy, the demand for energy is further increased, and the voice of new energy technology is getting higher and higher. At present, in the automotive industry, the further development of pure electric vehicle and hybrid vehicle technology has solved some energy problems, but there are still many problems. The disadvantages, such as the lag of battery system integration technology, the safety problems brought about, etc. Specifically, factors such as the risk of liquid leakage in the power battery of electric vehicles, the possibility of wading electric vehicles on water-logged roads, and the failure of the sealing protection structure of the battery pack will all lead to the risk of liquid accumulation inside the battery pack. Leakage, short circuit, spontaneous combustion and even explosion and other s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/48H01M2/10B60L11/18H01M50/20H01M50/249
CPCB60L58/10H01M10/4228H01M10/4285H01M2220/20H01M10/48H01M10/4257H01M2010/4278Y02T90/16B60L50/66B60L50/64Y02T10/70Y02E60/10
Inventor 方运舟阎小军柏跃虎
Owner 奇瑞新能源汽车股份有限公司
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