Control system of high-voltage battery and control method thereof

Abstract

The invention relates to a control system of a high-voltage battery and a control method thereof. The high-voltage battery of a car load controller is connected to a judge module, so as to judge whether the battery is switched on or switched off, and transmit a judged result to a battery management system in a way of CAN information; the battery management system responds to the request of the car load controller to control a battery supply relay to be switched on or switched off; and from the view point of the system, the car load controller comprehensively considers signals such as the state of the battery, the state of a motor, the request for starting or closing the system, the state of failure information, and the like, to judge whether the battery is switched on or switched off, transmit the judged result to the battery management system to be executed, and transmit the real state of switching on or switching off of the battery to the other control modules of the car load controller. By judging the information, the system reasonably controls the normal starting and closing of the battery, correctly switches on and switches off the battery when having an error for demanding the battery to be switched off, can prevent the circuit of a hard ware from being broken, protects the battery body, and ensures the security of the car load and persons.

Description

technical field [0001] The invention relates to the field of electric vehicle control, in particular to a high-voltage battery control system and a control method thereof. Background technique [0002] At the present stage of social development, energy and the environment have become the most concerned issues in the world. Energy is the foundation of the economy, while the environment is an important factor restricting economic development. How to solve the contradiction between economic development, energy supply and environmental pollution is an urgent problem that countries all over the world need to solve. Electric vehicles replace oil with electricity, which can achieve "zero emission" and low noise, and are an important means to solve energy and environmental problems. With the development of battery technology, the bottleneck that plagues the development of electric vehicles is expected to be broken through. Due to energy constraints and environmental protection req...

AI Technical Summary

Problems solved by technology

[0005] In summary, there are the following technical problems in the prior art: (1) The safety of the high-voltage battery requires a protection system to reasonably control the connection and disconnection of the high-voltage system; (2) the existing hardware circuit controls the connection and disconnection of the battery The method cannot be accurately judged from the perspective of the entire system

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