A cooling system for a hybrid vehicle

Abstract

The invention discloses a cooling system of a hybrid electric vehicle, which is composed of an engine cooling system and a motor cooling system. The water pipe of the water jacket and the engine radiator; the motor cooling system includes a motor expansion tank, a motor water pump, a motor water jacket, a motor controller and a motor radiator, and the motor expansion tank is communicated with the motor water pump; the motor radiator . The motor water jacket and the motor water pump are connected to each other; the motor controller is arranged between the motor water jacket and the motor radiator; the engine radiator and the motor radiator are arranged side by side at the air inlet of the front cabin of the vehicle. The hybrid vehicle cooling system of the invention has low cost and good heat dissipation effect.

Description

technical field [0001] The invention relates to the field of hybrid electric vehicles, in particular to a cooling system for a hybrid electric vehicle. Background technique [0002] A hybrid electric vehicle couples and superimposes two or more power sources as the power of the vehicle, so as to achieve the goal of optimizing the energy efficiency of the vehicle, improving the fuel efficiency of the vehicle and reducing exhaust emissions. At present, general hybrid vehicles use the torque superposition of the engine and the generating drive motor as the power source, and the engine and the motor need to be cooled when they work. There are several types of hybrid vehicle cooling systems: First, the engine has its own independent engine cooling system due to the relatively large heat generated by the engine itself; the motor also generates heat during the process of power generation and auxiliary drive, but the heat generated by the motor The heat is much smaller than that ge...

AI Technical Summary

Problems solved by technology

There are several types of hybrid vehicle cooling systems: First, the engine has its own independent engine cooling system due to the relatively large heat generated by the engine itself; the motor also generates heat during the process of power generation and auxiliary drive, but the heat generated by the motor The heat is much smaller than that generated by the engine. For the motor, the air-cooled structure is used as the cooling system. The air-cooled structure does not use the radiator structure as the cooling system. However, the air-cooled system has high requirements for the design of the motor, and the design is difficult and difficult. Obtain high specific energy, thereby additionally increasing the cost of design and manufacturing

The second is that the engine and the motor share a set of cooling system, and the heat emitted by the motor and the engine is completely dissipated by the engine radiator. The cooling effect of this cooling system is not good, and the motor cannot work in the best efficiency range; the third is , although the motor adopts a separate cooling system, the motor radiator and the engine radiator are arranged front and rear in the front cabin, and the two share a cooling fan installed at the rear, which leads to poor cooling effect of the entire cooling system

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