Power domain control system for electric car, and control method thereof

Abstract

The invention discloses a power domain control system for an electric car. The power domain control system for the electric car comprises a power domain controller, a battery pack information acquisition system, a motor control system and other auxiliary devices; wherein the power domain controller integrates whole car control and battery management functions; the battery pack information acquisition system realizes battery pack information acquisition and high-pressure contactor drive functions, and comprises a high-pressure management module and a unit information acquisition module; and thepower domain controller is in communication with a motor controller through a power controller area network (CAN) bus, is in communication with an instrument and other domain controllers of the car through a whole car CAN bus, is in communication with a quick charging pile through a quick charging CAN bus, and is in communication with the battery pack information acquisition system and a chargerthrough a battery intranet CAN bus. According to the power domain control system for the electric car provided by the invention, the power domain system becomes three parts, namely, the domain controller, the battery pack information acquisition system and a motor drive system, so that the integration level of power domain software is improved, the design of the battery pack system is simplified,and the structure of the power domain system is optimized.

Description

technical field [0001] The invention belongs to the design field of electric vehicle power control system, and in particular relates to the design of a power domain system architecture for electric vehicles. Background technique [0002] In the new era, domestic electric vehicles have been developing for nearly 20 years since they sprouted in 2000, especially in the next ten years, electric vehicle technology has gradually reached a relatively mature state from immaturity. Throughout the development process of electric vehicles, no matter how the industry technology develops, the electrical architecture of electric vehicle technology has basically remained unchanged, and has continued the control architecture of the three-electric system of electric vehicles, including the vehicle controller (VCU, Vehicle Control Unit), battery management system ( BMS, Battery Management System), motor drive system (MCS, Motor Control System) system. [0003] With the continuous emergence o...

AI Technical Summary

Problems solved by technology

[0003] With the continuous emergence of new technologies, the number of ECUs on new energy vehicles is also increasing, and the electronic and electrical systems of automobiles are becoming more and more complex, which has a negative impact on the expansion of the work of the automotive system. increase, CAN network communication will no longer meet the needs of vehicle communication

Due to the huge number of ECUs, the function expansion of the vehicle system will become more and more complicated, and it will affect the whole body. It becomes more and more difficult to expand the system, and the workload of system upgrades will increase exponentially.

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