New energy vehicle power battery thermal management system

Abstract

The invention discloses a new energy vehicle power battery thermal management system in the technical field of new energy vehicles, which comprises a power battery system and a management monitoring system; a radiator is arranged on one side of a power battery, the radiator is connected with an expansion water tank through a pipeline, and a main control module is electrically connected with a battery pack management module; the management monitoring system is electrically and bidirectionally connected with the power battery; the temperature of the battery pack is monitored, the temperature of the battery pack is compared with the preset temperature value, if the temperature is lower than or exceeds the preset temperature value, the environment temperature of the power battery is monitored in real time, heat preservation is conducted on the power battery to a certain degree in combination with the low-voltage battery, and the service life of the power battery is effectively prolonged; the actual discharge power of the power battery is limited below the maximum allowable discharge power of the power battery by controlling the actual power output of the motor in real time, so that the generation of the over-limit power of the power battery is controlled, and the safety and reliability of the power battery are improved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a heat management system for a power battery of a new energy vehicle. Background technique [0002] New energy vehicles refer to the use of unconventional vehicle fuels as power sources (or the use of conventional vehicle fuels, the use of new vehicle power devices), integrated vehicle power control and advanced technology in driving, the formation of advanced technical principles, with Automobiles with new technology and new structure. New energy vehicles include four types of hybrid electric vehicles (HEV), pure electric vehicles (BEV, including solar vehicles), fuel cell electric vehicles (FCEV), and other new energy (such as supercapacitors, flywheels and other high-efficiency energy storage) vehicles Wait. Unconventional vehicle fuels refer to fuels other than gasoline and diesel. [0003] The performance, life and safety of new energy vehicle batteries are cl...

AI Technical Summary

Problems solved by technology

[0003] The performance, life and safety of new energy vehicle batteries are closely related to the ambient temperature. If the ambient temperature is too high or too low, it will affect the working performance of the battery. The consistency of battery cells reduces the battery charge and discharge cycle efficiency, affects the power and energy of the battery, reduces the safety and reliability of the power battery, and cannot protect itself in an emergency. For this reason, we propose A new energy vehicle power battery thermal management system

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