Cooling device of pure-electric logistics vehicle and control method of cooling device

Abstract

The invention relates to a cooling device of a pure-electric logistics vehicle and a control method of the cooling device. The cooling device comprises a cooling circuit, a cooling mechanism, a motor controller, a vehicle-mounted charger and a motor, wherein the cooling mechanism, the motor controller, the vehicle-mounted charger and the motor are respectively in signal connection with a vehicle controller unit (VCU); the cooling mechanism comprises a cooling pump, a cooling fluid filter, a radiator and a liquid storing tank which are connected in the cooling circuit in series; the cooling fluid filter adopts a straight-through type cooling fluid filter which communicates with the cooling circuit; cooling fluid for performing circulation to take away heat quantity in the cooling circuit is arranged in the liquid storing tank; and the cooling pump and the radiator are respectively in signal connection with the VCU. According to the cooling device disclosed by the invention, the cooling effect can be quickly and effectively achieved; the energy consumption is reduced; the cost is low; the cooling device is convenient to mount; the normal working of the cooling system is guaranteed; the situation that impurities enter the motor and the controller is avoided; the service life of the motor and the service life of the controller are prolonged; the response time is short and the response is timely; and the service life of the cooling pump and the service life of an electronic fan of the radiator are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of pure electric vehicle cooling cycle, and in particular relates to a pure electric logistics vehicle cooling device and a control method thereof. Background technique [0002] In recent years, in response to national policies, the state and automobile factories are vigorously developing pure electric vehicles, among which pure electric logistics vehicles have also developed rapidly. In particular, the three core technologies of pure electric vehicles, motors, electronic controls, and batteries, have developed rapidly. However, the drive system of pure electric vehicles is different from that of traditional vehicles. The drive system of pure electric vehicles has a large starting torque, and the motor runs at high speed for a long time. Running, the thermal effect of the motor itself is low, which leads to poor working stability of the motor. When the motor controller (MCU) and on-board charger (OBC) are ...

AI Technical Summary

Problems solved by technology

[0003] At present, the motors and electronic control systems of some models are air-cooled. This cooling method has high requirements for the design of the motors and electronic control systems, and is bulky, difficult to arrange, increases the weight of the vehicle, and consumes battery power when changing directions, reducing The cruising range of the whole vehicle

Although many existing pure electric vehicles use water cooling, in terms of control strategy, as long as the key is turned to "on", the electric water pump and electronic fan will start to work, and the motor and electronic control system will not work, which has little effect , and wasted electric energy, reducing the cruising range of the vehicle

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