High-voltage information acquisition controller

Abstract

The invention provides a high-voltage information acquisition controller. The high-voltage information acquisition controller comprises a power circuit, a switching quantity acquisition unit, an analog quantity acquisition unit, a power output unit, a high-voltage acquisition unit, a CAN circuit and an MCU circuit. The high-voltage information acquisition controller can directly acquire voltages across the two ends of a pre-charge contactor, and the voltages serve as necessary conditions for judging that pre-charge is completed. The high-voltage information acquisition controller can acquire input and output side voltages of high-voltage contactors such as the total positive contactor, the total negative contactor and the charge contactor and judge the states of the high-voltage contactors to achieve the purpose of protecting the contactors and relevant parts. The high-voltage information acquisition controller integrates part of functions of a vehicle control unit and can serve as an independent controller to control a whole vehicle. The high-voltage information acquisition controller integrates a current detection function and achieves detection of bus currents.

Description

technical field [0001] A high-voltage information acquisition controller (ICS) belongs to the field of electric vehicles. Background technique [0002] At present, the contactor feedback in the power distribution system of pure electric vehicles adopts mechanical feedback, and the publication number is CN205485396U, an electric vehicle VCU management system. Contact, so the error is larger and the life is shorter. In addition, in the pre-charging control logic, it is necessary to collect the voltage at both ends of the pre-charging, and now this information is fed back by the motor controller and the battery management system, not directly collected information. If there is a problem with these two nodes, it will cause Equipment such as the motor controller is damaged, so it is necessary to increase the high-voltage information acquisition controller (ICS). Contents of the invention [0003] In view of the above problems, the present invention proposes a high-voltage inf...

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Problems solved by technology

[0003] Aiming at the above-mentioned problems, the present invention proposes a high-voltage information acquisition controller, which solves the defect of the mechanical feedback of the existing contactor, has no life limit in theory, and is more reliable

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