High-voltage integrated control system for electric car

Abstract

The invention relates to a high-voltage integrated control system for an electric car, and belongs to the technical field of electric cars. The system provided by the invention comprises a high-voltage power distribution unit integrated in a box body with a heat radiator, and also comprises a drive motor controller, a vehicle-mounted charger, and a DC step-down converter. The external surface of the box body is provided with an X1 communication interface connected with drive motor controller, and is also provided with an X2 communication interface which is connected to the vehicle-mounted charger, the DC step-down converter and the high-voltage power distribution unit. According to the embodiment of the invention, the system can achieve integrated design, can be applied to a pure electric car and a plug-in hybrid car, achieves the control of a drive motor, achieves a charging function of a power battery and a low-voltage storage battery, reduces the load of a low-voltage electric appliance, reduces the loss, improves the efficiency, saves the space, reduces the weight, and reduces the cost.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, and more specifically, the invention relates to a high-voltage integrated control system for electric vehicles. Background technique [0002] The components of the high-voltage control system of electric vehicles mainly include: drive motor controller (MCU), high-voltage power distribution unit (PDU), on-board charger (OBC), DC / DC converter, electric air-conditioning compressor, air-conditioning electric heating PTC etc.; the high-voltage controllers are arranged independently and scattered, the volume is large, and the space layout is relatively difficult; there are too many high-voltage connection interfaces between them, and the required high-voltage wires are longer; the increase in line loss also increases the corresponding cost; the high-voltage control system The liquid cooling method, independent and decentralized arrangement increases the length of the cooling system pipeline, ...

AI Technical Summary

Problems solved by technology

[0002] The components of the high-voltage control system of electric vehicles mainly include: drive motor controller (MCU), high-voltage power distribution unit (PDU), on-board charger (OBC), DC / DC converter, electric air-conditioning compressor, air-conditioning electric heating PTC etc.; the high-voltage controllers are arranged independently and scattered, the volume is large, and the space layout is relatively difficult; there are too many high-voltage connection interfaces between them, and the required high-voltage wires are longer; the increase in line loss also increases the corresponding cost; the high-voltage control system Adopting liquid cooling method, independent and decentralized arrangement increases the length of the cooling system pipeline, increases pipeline loss, and reduces cooling efficiency

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