Liquid cooling temperature control and management method of power lithium ion battery

A technology of lithium ion battery and management method, which is applied in the field of control and management of liquid cooling temperature of power lithium ion battery, can solve the problems of no description or report, and no ceramic material has been collected, so as to solve the problem of heat dissipation lag and prevent battery performance loss Effect
CN102544618AInactive Publication Date: 2012-07-04SHANGHAI AEROSPACE POWER TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI AEROSPACE POWER TECH
Publication Date
2012-07-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a liquid cooling temperature control and management method of a power lithium ion battery. The liquid cooling temperature control and management method comprises the steps of: 1) acquiring temperature and current; 2) obtaining a highest temperature value, a lowest temperature value, greatest temperature difference and liquid cooling system inlet and outlet temperature difference; 3) judging whether the current is large or not and computing a working state 1; 4) judging whether the temperature of the battery is high or not, computing a working state 2; 5) judging whether temperature difference of the battery is too great or not and computing a working state 3; 6) judging whether the outlet temperature of a battery pack is too high or not and computing a working state 4; 7) judging whether the temperature difference of circulating medium at the inlet and outlet of the battery pack is too great or not and computing a working state 5; and 8) comparing the computed working state 1, the working state 2, the working state 3, the working state 4 and the working state 5 to obtain a working state with the best heat dissipation effect for setting. The liquid cooling temperature control and management method of the power lithium ion battery solves the problems that the temperature of the battery is too high and the local temperature difference is too great, and has the beneficial effects that the performance of the battery is improved and the service life of battery is prolonged.
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Description

technical field

[0001] The invention relates to a lithium ion battery, in particular to a method for controlling and managing the liquid cooling temperature of a power lithium ion battery. Background technique

[0002] Due to the increasing global energy crisis and environmental pollution, the development of the automobile industry must also adopt new solutions. Electric vehicles are the mainstream of new vehicles that have become worldwide. The advantages of high voltage, high specific energy, good cycle performance, clean and pollution-free lithium-ion batteries are considered to be the most promising power source for vehicles.

[0003] The power lithium-ion battery provides driving force for the vehicle, and its performance greatly affects the performance of the vehicle. The power lithium-ion battery must work within a certain temperature range so that its performance will be at its optimum. For power lithium-ion batteries, the working performance is better at 15°C-35°...

Claims

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