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Power battery thermal protection system

A technology for power batteries and power battery packs, applied to secondary batteries, battery pack components, circuits, etc., can solve problems such as out of control, and achieve the effects of ensuring safety, preventing direct contact, and avoiding explosions

Pending Publication Date: 2020-02-21
AIWAYS AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the power battery is working, it is bound to heat up. It is controllable under normal conditions, but it will get out of control under abnormal conditions.

Method used

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Examples

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Embodiment Construction

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, one skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or that other methods, materials, devices, etc. may be employed. In other instances, well-known technical solutions have not...

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Abstract

The invention provides a power battery thermal protection system, which is used for carrying out thermal protection on a power battery pack. The power battery pack comprises an upper cover, a lower housing and a plurality of module integration modules which are located between the upper cover and the lower housing and are arranged in the first direction. The power battery thermal protection systemcomprises fireproof thermal insulation pads, which are arranged between the upper cover and the module integration modules, wherein the fireproof thermal insulation pads are in one-to-one correspondence with the module integration modules; and a battery pack explosion-proof valve, which is arranged on the inner side of at least one side edge, in the second direction, of the lower housing, whereinthe second direction is perpendicular to the first direction. The system realizes prolonging of time before the fire of a battery core breaks through a power battery housing when the battery core issubjected to thermal runaway due to heating, thereby leaving enough escape time for passengers, and guaranteeing the safety of the passengers.

Description

technical field [0001] The invention relates to the technical field of power battery pack heat protection, in particular to a power battery heat protection system. Background technique [0002] Power batteries are the only source of energy for new energy vehicles. After the power battery is working, it is bound to generate heat. It is controllable under normal conditions, but it will get out of control under abnormal conditions. The phenomenon of uncontrollable temperature rise caused by the exothermic reaction inside the power battery cell is called thermal runaway. Thermal runaway occurs when a battery generates more heat than it can dissipate. If in the battery system, the thermal runaway of one cell causes the thermal runaway of other cells, that is, the thermal runaway spreads. [0003] Once the thermal runaway of the lithium battery occurs, the macroscopic manifestation is that the temperature of the battery pack is abnormal locally, and the internal resistance of t...

Claims

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Application Information

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IPC IPC(8): H01M2/12H01M10/613H01M10/625H01M10/658H01M2/10A62C3/16
CPCA62C3/16H01M10/613H01M10/625H01M10/658H01M50/20H01M50/375Y02E60/10
Inventor 姚丽君
Owner AIWAYS AUTOMOBILE CO LTD
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