Power supply circuit of electric vehicle controller

A vehicle controller and power supply circuit technology, applied in the direction of program control, computer control, general control system, etc., can solve the problem of power supply shutdown without considering the shutdown surge voltage release problem, less isolated DC/DC power supply modules There are problems such as automotive-grade products and isolated DC/DC power modules that are difficult to achieve sleep and wake-up, so as to achieve the effect of improving reliability and stability

Active Publication Date: 2014-09-24
陈言平
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] In the prior art, in the design of the electric vehicle controller power supply circuit, an isolated DC/DC power module is usually used to provide a 5V working power supply. This design has the following defects: (1), the isolated DC/DC power module is very There are few automotive-grade products; (2) It is difficult to sleep and wake up the isolated DC/DC power module; (3), the static power consumption of the isolated DC/DC power modul

Method used

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  • Power supply circuit of electric vehicle controller
  • Power supply circuit of electric vehicle controller

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Embodiment Construction

[0026] The specific implementation of the present invention will be further described below in conjunction with the drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.

[0027] The power supply circuit of an electric vehicle controller provided by the present invention includes a vehicle power supply, a key switch signal terminal, a main control chip MCU, and figure 1 The working power processing circuit shown in and such as figure 2 Drive power processing circuit shown in.

[0028] The input terminal KL30_VPE of the working power processing circuit in the present invention is connected to the anode of the vehicle power supply, and the output terminal is connected to the input terminal of the main control chip MCU; the key switch signal terminal KL15_VPI outputs the key switch signal to the main control chip MCU; in this embodiment, the main The control chip MCU is the automotive-...

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Abstract

The invention relates to the technical field of an electric vehicle control system, and specifically relates to a power supply circuit of an electric vehicle controller. The power supply circuit of the electric vehicle controller, through a key switch signal end, outputs a key switch signal to a master control unit (MCU) so as to control wakening and switching of the MCU; furthermore, through arrangement of a reversal connection protection unit, reversal connection protection is provided; through arrangement of a surge voltage protection unit, surge voltage protection is provided; and furthermore, through arrangement of a MOS transistor with a freewheeling diode, reversal connection protection and turning-off control of a driving power processing circuit are realized, and inductive load turning-off surge voltages are released to a battery. Therefore, various functions and safety needs of vehicle control of an electric vehicle are taken into full consideration, thus forceful technical support is provided for improvement of the reliability and stability of the electric vehicle controller.

Description

Technical field [0001] The invention relates to the technical field of electric vehicle control systems, in particular to a power supply circuit of an electric vehicle controller. Background technique [0002] Electric vehicles have attracted more and more attention due to their advantages such as pollution-free, low noise, simple structure, convenient maintenance, high energy conversion efficiency and smoothing the peak-to-valley difference of the power grid. Electric vehicle vehicle controller (Vehicle Controller) is the core component of the electric vehicle control system. It plays a role in the normal driving of electric vehicles, regenerative energy recovery, network management, fault diagnosis and processing, and vehicle status and monitoring. The key role is that its performance is directly related to the overall performance of the electric vehicle, and whether the power supply design in the vehicle controller is reasonable is directly related to whether the vehicle contr...

Claims

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Application Information

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IPC IPC(8): G05B19/042
Inventor 陈言平
Owner 陈言平
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