Thermal-management control apparatus of lithium power battery pack

Abstract

The invention relates to a thermal-management control apparatus of a lithium power battery pack. The apparatus includes a battery management system and a battery case body in which a temperature sensor, a lithium battery pack, a refrigerating component, a heating component, a blower component and an airflow circulating path are arranged. The battery management system is respectively connected electrically to the lithium battery pack, the refrigerating component, the heating component, the blower component and the temperature sensor. The lithium battery pack, the refrigerating component, the heating component and the blower component are all arranged in the airflow circulating path. The temperature in the battery case body is detected by means of the battery management system and the temperature sensor, and then command of increasing or reducing the temperature is send out according to abnormity of the temperature and the refrigerating component or the heating component is started to control the temperature, thereby controlling the temperature in the battery case body to reach specified range. The apparatus ensures the influence factor of external temperature on the lithium power battery pack to be reduced as most as possible, and enables performance of the lithium power battery pack to reach the best status.

Description

technical field [0001] The invention relates to the technical field of power lithium battery packs, in particular to a thermal management control device for power lithium battery packs. Background technique [0002] The use of new energy pure electric vehicles is becoming more and more popular, and the power battery, motor and electronic control are the heart of pure electric vehicles; the use effect of the power battery integrated group is not only related to the quality of the manufacturing unit, but also related to the use It is related to the external environment of the battery, such as ambient temperature factors. [0003] Power lithium battery has the advantages of high energy density, so it is widely used, but it also has disadvantages, such as high and low temperature have a great impact on performance, when the temperature is below 05 ℃, it cannot be charged, so electric vehicles cannot be used in winter in the north, and the ambient temperature is often Below 0°C,...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of existing power lithium batteries such as performance degradation and shortened life when used in extreme temperature environments, and to provide a simple and reasonable structure that can perform thermal management on power lithium batteries to ensure that the external temperature is controlled by the lithium battery. The thermal management control device of the power lithium battery pack reduces the influencing factors of the battery pack to the minimum and makes the performance of the lithium battery pack system reach the best state

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