Automobile electronic water pump system of coaxial double-motor structure and control method thereof

Abstract

The invention discloses an automobile electronic water pump system of a coaxial double-motor structure. The automobile electronic water pump system of the coaxial double-motor structure comprises an electronic water pump, a water tank and a metal guide pipe, wherein a first motor and a second motor are arranged in the electronic water pump, the first motor and the second motor share one output shaft, the output shaft is fixedly connected with an impeller, and a water outlet of the water tank is connected with a water inlet of the electronic water pump through a pipeline; the metal guide pipe is used for surrounding a shell of an automobile engine, a water inlet of the metal guide pipe is connected with a water outlet of the electronic water pump through a pipeline, a water outlet of the metal guide pipe is connected with a water inlet of the water tank through a pipeline, and the automobile engine is electrically connected with an engine control circuit board; and the shell of the automobile engine is provided with a temperature sensor, the temperature sensor is electrically connected with the engine control circuit board, the electronic water pump is electrically connected with a water pump control circuit board, and the water pump control circuit board is connected with the engine control circuit board through a controller area network (CAN) bus.

Description

technical field [0001] The invention relates to an automotive electronic water pump, in particular to a high-power automotive electronic water pump with a coaxial double motor structure. Background technique [0002] Whether in traditional fuel vehicles or new energy vehicles using fuel cells, a powerful thermal cycle system is required to cool down the engine or fuel cells and other components, so as to ensure the normal operation of the engine or fuel cells. As the power source driving the coolant circulation in the thermal cycle system, the water pump is the core component of the system. Therefore, automotive engineers have been trying to improve the water pump for a long time in order to improve its performance and efficiency. Regardless of whether it acts on the engine, fuel cell or other high-power heat-generating components, the function and principle of the thermal cycle system are roughly the same, and a high-power water pump with a power of more than 200W is requir...

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Problems solved by technology

[0006] 2. The electronic water pump needs to have a power output capability of about P0, but most of the time, the motor works with a power of 4% P0-10% P0, and the working state of far less than the rated power will cause a decrease in efficiency and permanent damage to the motor. Magnets are magnetically damaged;

[0007] 3. When the water pump motor fails, the single motor structure will stop working because it does not have the limp function, which will greatly reduce the heat dissipation performance of the engine, thereby reducing its output power and fuel efficiency, and even the engine will stop, causing the vehicle to lose power

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