Heat flow discharge device and method of power battery pack, power battery pack and vehicle

A power battery pack and discharge device technology, which is applied to secondary batteries, battery pack components, secondary battery repair/maintenance, etc., can solve problems such as the inability to prevent thermal runaway from spreading in battery packs, and reduce losses, The effect of protecting the safety of passengers and delaying the spread

Pending Publication Date: 2021-12-10
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing power battery products cannot prevent the spread of therma

Method used

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  • Heat flow discharge device and method of power battery pack, power battery pack and vehicle
  • Heat flow discharge device and method of power battery pack, power battery pack and vehicle
  • Heat flow discharge device and method of power battery pack, power battery pack and vehicle

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[0030] The following Figure 1-6 Further explanation of the invention:

[0031] The technical solutions of the present invention will be described below in conjunction with the drawings, which is apparent from the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are in the range of the present invention without making creative labor premise.

[0032] In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "within", "outside", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, is meant to facilitate the description of the present invention and simplified description, rather than indicating or implying that the device or component must have a specific orientation. Construct and operation, so it is not understood to b...

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Abstract

The invention discloses a heat flow discharge device and method of a power battery pack, the power battery pack and a vehicle, and belongs to the technical field of power battery safety. The heat flow discharge device comprises a battery lower box body used for placing at least four battery modules, wherein cooling channels are arranged on the periphery of the battery lower box body, anti-explosion valves are arranged on the outer sides of the cooling channels, a partition beam is arranged between every two adjacent battery modules, each partition beam is communicated with the corresponding cooling channel through a flow guide channel arranged in the partition beam, a flow guide groove is formed in one side of each flow guide channel, a flow guide plate is arranged in each flow guide groove, and a thickness weakening area is arranged on each flow guide plate. The invention discloses a heat flow discharge device and method for a power battery pack, the power battery pack and a vehicle, a two-stage discharge system is designed, and rapid exhaust of a battery box during thermal runaway is realized, so that diffusion of thermal runaway in a battery pack system is delayed, the safety of passengers in the vehicle is protected, and loss is reduced to the maximum extent.

Description

technical field [0001] The invention discloses a heat flow discharge device and method for a power battery pack, a power battery pack and a vehicle, and belongs to the technical field of power battery safety. Background technique [0002] With the increase in the number of electric vehicles, thermal runaway accidents are becoming more and more frequent. The safety issue of electric vehicles has become a hot spot of social concern. Lithium-ion batteries are at risk of thermal runaway under conditions such as short circuit, overcharge and overdischarge, temperature exceeding the limit, and mechanical damage. As the energy density of batteries continues to increase, the risk of thermal runaway of lithium batteries is also increasing. The vehicle power battery pack is a relatively closed space, and a single cell thermal runaway will release a large amount of heat, which in turn will cause a chain thermal runaway of other cells in the battery pack. [0003] The current power b...

Claims

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Application Information

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IPC IPC(8): H01M50/342H01M10/613H01M10/625H01M10/42
CPCH01M50/342H01M10/613H01M10/625H01M2010/4271Y02E60/10
Inventor 孙士杰孙焕丽乔延涛许立超卢军王书洋
Owner CHINA FIRST AUTOMOBILE
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