Electric vehicle battery protection system

A technology for electric vehicles and protection systems, applied in the repair/maintenance of electric vehicles, batteries, secondary batteries, etc., can solve problems such as explosion, chain reaction spread, fire, etc., to reduce the possibility, increase the service life, and save energy Effect

Pending Publication Date: 2017-10-20
安徽康力节能电器科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] New energy electric vehicles are becoming more and more mainstream in the automotive market. However, electric vehicles are usually driven by high-energy-density batteries. However, when a collision occurs or when subjected to excessive heat or mechanical stress, the high-energy-density battery is called thermal runaway. In a dangerous exothermic reac

Method used

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  • Electric vehicle battery protection system
  • Electric vehicle battery protection system
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Embodiment Construction

[0020] figure 1 Schematic diagram for the electric vehicle battery protection system: figure 1 The electric vehicle battery protection system in China includes: a plurality of energy storage devices, a plurality of DC-DC converters, a plurality of switches, a DC bus, a controller, a large-capacity energy storage device, a resistor, a collision detection sensor and a refrigeration system, and is characterized in that : The collision detection sensor controller is used to sense whether an accident has occurred in the electric vehicle. When the collision detection sensor detects that a collision accident occurs, the controller converts the energy storage device from a series connection state to a parallel connection state, and closes the switch to conduct The discharge circuit including the energy storage device, the switch and the resistor discharges the energy storage device, and at the same time starts the refrigeration system to cool the energy storage device, the resistor an...

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Abstract

The present invention discloses an electric vehicle battery protection system, which comprises a plurality of energy storage devices, a plurality of DC-DC converters, a plurality of switches, a DC bus, a controller, a large-capacity energy storage device, resistors, a collision detection sensor and a refrigeration system. When an accident is detected, energy in batteries can be rapidly decreased, the energy in a battery pack is rapidly decreased by using a rapid cooling system, thus the energy in the batteries can be rapidly transferred to the single large-capacity energy storage device, and the single large-capacity energy storage device is cooled to prevent a fact that heat generated by a damaged battery is transferred to other batteries to make the adjacent batteries to conduct the same exothermic reactions, and the chain of dangerous reactions is caused to spread.

Description

technical field [0001] The invention relates to a battery protection system for an electric vehicle, in particular to the control and protection of the battery in the vehicle. Background technique [0002] New energy electric vehicles are becoming more and more mainstream in the automotive market. However, electric vehicles are usually driven by high-energy-density batteries. However, when a collision occurs or when subjected to excessive heat or mechanical stress, the high-energy-density battery is called thermal runaway. A dangerous exothermic reaction may release its energy uncontrollably and explode or catch fire. Batteries in a car are usually in close proximity to each other. Therefore, the thermal energy generated by one damaged battery can be transferred to other batteries, causing these nearby batteries to experience the same The exothermic reaction will spread the chain reaction. Contents of the invention [0003] The purpose of the present invention is to overc...

Claims

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Application Information

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IPC IPC(8): B60L11/18B60L3/00H01M10/42H01M10/613H01M10/625H01M10/66
CPCH01M10/42H01M10/613H01M10/625H01M10/66B60L3/0046B60L58/10B60L58/26H01M2220/20Y02T10/70Y02E60/10
Inventor 李国红李中虎司红康刘自付郭本能周鹏
Owner 安徽康力节能电器科技有限公司
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