An electric vehicle thermal management system and device

Abstract

The invention discloses a thermal management system and device for an electric vehicle, comprising a first circuit system and a second circuit system for realizing the heating and cooling of the power battery of the electric vehicle. The first circuit system includes a first water pump, a second water pump and a water heater. , heat exchanger and power battery, the output end of the water pump 1 is connected to the input end of the water heater, this kind of electric vehicle thermal management system and device can not only heat or cool the passenger compartment during the driving process of the electric vehicle, The power battery can be kept warm or cooled, and at the same time, the ambient temperature of the power battery can be monitored in real time when the electric vehicle is in a static state, and the power battery can be insulated to a certain extent in combination with the low-voltage battery, which effectively prolongs the use of the power battery. In addition, the low temperature signal can also be sent to the user's mobile phone through the wireless signal transmitter, so that the user can take heat preservation measures in time.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an electric vehicle thermal management system and device. Background technique [0002] Electric vehicle refers to a vehicle that is powered by on-board power supply and driven by a motor, and meets the requirements of road traffic and safety regulations. With the development of society, people pay more and more attention to the environment, and traditional diesel locomotives will produce various pollutants during operation, which will pollute the air, so electric vehicles came into being and have been greatly developed. It has less impact on the environment than traditional cars, and its prospects are widely optimistic. [0003] At present, the thermal management requirements of electric vehicles are higher than those of traditional systems, and their thermal management systems are more complex. Not only the air conditioning system, but also the newly added batteries, drive mot...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal management system and device for an electric vehicle to solve the problem in the above-mentioned background art that when the electric vehicle is in a static state, the on-board battery cannot be kept warm and the service life of the on-board battery is reduced

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