Power circuit of electric automobile central control system and achievement method thereof

Abstract

The invention discloses a power circuit of an electric automobile central control system and an achievement method thereof. The circuit includes a first MOS transistor, a first direct-current chopper, a power supply management unit, a multimedia processing system, a single chip microcomputer, a first line voltage stabilizer, a second linear voltage stabilizer, a CAN chip, a second MOS transistor, a logic or gate, a 4 G communication module, a second direct-current chopper, a third linear voltage stabilizer, a battery signal terminal, a hardwire signal terminal, an enabling signal terminal, a high-level CAN bus terminal and a low-level CAN bus terminal. The power circuit can perform system wakening through a hardwire signal, can also meet the demand for remote hibernation or wakening and the demand for CAN hibernation or wakening, is more comprehensive in function, simple in structure and low in cost, can make the first MOS transistor and the second MOS transistor in a cut-off state during hibernation and reduce quiescent current in the mode that the hardwire signal terminal is in a suspended state and can be widely applied to the field of power supplies.

Description

technical field [0001] The invention relates to the field of power supplies, in particular to a power supply circuit of an electric vehicle central control system and an implementation method thereof. Background technique [0002] Electric vehicles have the advantages of zero emission, high energy utilization rate, simple structure, low noise, and smooth peak-valley differences in the power grid. consider. In the current era of Internet +, the electric vehicle central control system (VehicleContrlSystem) is not only related to the central control of traditional vehicles, but also involves the interconnection between users and the Internet. Its performance is directly related to the overall performance of electric vehicles. . Whether the power supply of the central control system is reasonable and reliable directly affects the reliable operation of the central control system of the electric vehicle. [0003] In the prior art, most of the power circuits of the automotive ce...

AI Technical Summary

Problems solved by technology

For the central control system of electric vehicles, this solution has the following disadvantages: (1) cannot meet the remote sleep / wake-up requirements (such as 4G sleep / wake-up); (2) cannot meet the CAN sleep / wake-up requirements; (3) the circuit High complexity; (4) high cost; (5) low quiescent current and safety requirements are difficult to meet

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