Dual-power-supply control system of electric vehicle and electric vehicle

Abstract

The invention provides a dual-power-supply control system of an electric vehicle. The dual-power-supply control system comprises a main power supply module, a redundant power supply module and a powersupply isolation module; the main power supply module comprises a DC / DC converter, a main storage battery, a first safety load and a conventional load which are connected in parallel, wherein the conventional load is associated with non-driving safety; the redundant power supply module comprises a standby storage battery and a second safety load which are connected in parallel; the first safety load and the second safety load are redundant to each other and each comprise a steering control module and a brake control module; the power supply isolation module is connected with the main power supply module and the redundant power supply module, and is used for carrying out short-circuit failure detection by acquiring a current value and a current flow direction flowing between the main powersupply module and the redundant power supply module in real time; and if the short-circuit failure of one of the two modules is detected, the two modules are disconnected to ensure the normal use ofthe non-failure power supply module. According to the dual-power-supply control system, the problems existing in the dual-power redundancy design of the existing electric vehicle can be overcome, andthe stability of the power system of the electric vehicle is ensured to improve the driving safety.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an electric vehicle dual power supply control system and the electric vehicle. Background technique [0002] With the development of electric vehicle technology, redundant design has become an indispensable requirement, mainly involving redundant power supply design, when the main power supply is short of power or fails, the normal operation of the vehicle is maintained through the backup power supply. [0003] However, in the existing design of electric vehicles based on dual power supply redundancy, there are the following problems: (1) the failure of the main power supply module or the redundant power supply module cannot be quickly identified; (2) when the main power supply module or the redundant power supply module fails Failure to quickly isolate the faulty power supply module may lead to failure of vehicle power supply control; (3) The main power supply module is isol...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing design of electric vehicles based on dual power supply redundancy, there are the following problems: (1) the failure of the main power supply module or the redundant power supply module cannot be quickly identified; (2) when the main power supply module or the redundant power supply module fails Failure to quickly isolate the faulty power supply module may lead to failure of vehicle power supply control; (3) After the main power supply module is isolated due to failure, the steering control module and brake control module of the vehicle cannot be used, which is prone to safety hazards

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