Thermal management system of BEV (battery electric vehicle) and air conditioning system

Abstract

The invention discloses a thermal management system of a BEV (battery electric vehicle) and an air conditioning system. The thermal management system comprises a battery pack thermostat and a water heater, wherein an inlet of the water heater is connected with an outlet of a dynamic cooling system through a first water pump, an outlet of the water heater is connected with an inlet of a heating core of the air conditioning system of the vehicle, an outlet of the heating core is connected with a first inlet of a first water tank, and an outlet of the first water tank is connected with an inlet of the dynamic cooling system; the outlet of the heating core is connected with a first inlet of the battery pack thermostat through a third solenoid valve, the heating core is used for providing a heat source for the battery pack thermostat, a first outlet of the battery pack thermostat is connected with a second inlet of the first water tank, and the first inlet of the battery pack thermostat is communicated with the first outlet. The thermal management system not only can realize the heating requirement of an air conditioner of a new energy vehicle, but also can use a small amount of electric energy, recover waste heat of a motor for reheating and realize thermal balance between a heating system and a cooling system of a battery system.

Description

technical field [0001] The invention relates to the technical field of thermal management of new energy vehicles, in particular to a thermal management system and an air conditioning system of a pure electric vehicle. Background technique [0002] At present, all new energy vehicles in China use hot air heaters. The disadvantage of this device is that when heating, the high temperature generated by the heating rod is too close to the plastic shell, which will produce toxic dioxin gas, which will affect health, and the high voltage will directly Connecting to the HVAC heater shell means that high-voltage electricity enters the cockpit. Once danger occurs, there will be considerable hidden dangers for the front seat occupants. Contents of the invention [0003] The purpose of the present invention is to provide a thermal management system and an air conditioning system for pure electric vehicles in view of the deficiencies in the prior art. The waste heat can be reheated, a...

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Problems solved by technology

[0002] At present, all new energy vehicles in China use hot air heaters. The disadvantage of this device is that when heating, the high temperature generated by the heating rod is too close to the plastic shell, which will produce toxic dioxin gas, which will affect health, and the high voltage will directly Connecting to the HVAC heater shell means that high-voltage electricity enters the cockpit. Once danger occurs, there will be considerable hidden dangers for the passengers in the front seat.

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