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Battery heat managing system and method of electric vehicle

A technology for battery thermal management and electric vehicles, applied to secondary batteries, circuits, electrical components, etc., can solve problems such as slow heating or cooling speed, battery short circuit, small specific heat capacity, etc., and achieve the effect of improving utilization efficiency

Active Publication Date: 2014-01-01
SANMENXIA SUDA TRANSPORTATION ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively small specific heat capacity of air, the heating or cooling rate is slow
Moreover, if the air humidity is high, the battery may be short-circuited, causing immeasurable consequences.

Method used

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  • Battery heat managing system and method of electric vehicle
  • Battery heat managing system and method of electric vehicle
  • Battery heat managing system and method of electric vehicle

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Experimental program
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Embodiment Construction

[0020] The invention aims to make full use of the energy when the electric vehicle is charged and the heat dissipated when the electric vehicle is running, so as to reduce the unnecessary electrochemical loss caused by the electric energy flowing through the battery. Before charging, the battery thermal management system first detects the temperature of the battery box. If the temperature is too low or too high, the battery thermal management system is activated to heat or cool the battery box. When the temperature is appropriate, the power distribution unit starts charging the battery. . The battery thermal management system makes full use of the heat of the motor coolant of the electric vehicle, and guides it into the battery heating system to heat the battery box, saving part of the electric energy of the battery.

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the ...

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PUM

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Abstract

The invention discloses a battery heat managing system of an electric vehicle. A power allocation unit is arranged between a charger and a battery. The temperature of the battery is detected firstly before the battery is charged, and if the temperature is too low or too high, a heating component or a cooling component needs to be started, and then the power allocation unit does not allocate electric power for the battery until the temperature is appropriate. When the electric vehicle is in travelling, the battery can be heated by virtue of heat radiated from an electric motor. By virtue of the battery heat managing system, the electric vehicle does not use the electric energy of the battery or just uses a small amount of the electric energy of the battery when being charged or in travelling, so that the utilization efficiency of the electric energy of the battery is enhanced. The invention also discloses a battery heat managing method of an electric vehicle.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a battery thermal management system and method for electric vehicles. Background technique [0002] Since the 21st century, the number of cars in various places has grown rapidly, and the demand for traditional non-renewable energy is getting higher and higher. With the development of the automobile industry and battery technology, electric vehicles will undoubtedly become one of the important development directions to solve this energy shortage. [0003] Important reasons hindering the large-scale promotion of electric vehicles include: 1. Battery performance, power and energy-saving related technologies; 2. Charging and related technologies. The performance of the battery has a great relationship with the temperature, especially when charging. In the cold winter, it is impossible to charge the electric vehicle. This requires an energy-saving battery thermal management technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/625
CPCH01M10/625H01M10/635H01M10/6563H01M10/6567Y02E60/10
Inventor 邹忠月陈辉曹秉刚李复活郝永辉王丹郭艳婕
Owner SANMENXIA SUDA TRANSPORTATION ENERGY SAVING TECH