Power distribution control circuit of vehicle-mounted motor controller of electric vehicle and control method of control circuit

A motor controller and power distribution control technology, which is applied in electric vehicle charging technology, battery/fuel cell control devices, electric vehicles, etc., can solve problems such as existing risks, achieve the effect of reducing loss and ensuring electricity safety

Active Publication Date: 2016-10-12
CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem in the prior art that the bodywork system that does not need to be opened during the driving process always has a DC high-voltage power supply and there is a risk, the present invention provides an electric vehicle bodywork motor controller power distribution control circuit and control method

Method used

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  • Power distribution control circuit of vehicle-mounted motor controller of electric vehicle and control method of control circuit

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Embodiment Construction

[0033] Such as figure 1 As shown, the circuit of the present invention includes a power battery 1, a vehicle logic unit 9 (that is, the VCU in the figure), a top-mounted motor controller 6, a drive motor controller 5, a power-on buffer circuit, a CAN bus 10, a first electronic control Switch 4, the second electric control switch 3. The vehicle logic unit 9 is connected to the power battery 1, the bodywork motor controller 6, and the driving motor controller 5 through the CAN bus 10, and is respectively connected to the first electric control switch 4 and the second electric control switch 3 through the low-voltage control line. Connect to ground; the negative pole of the power battery 1 is connected to the bodywork motor controller 6 and the drive motor controller 5 through a high-voltage negative line; the positive pole of the power battery 1 is connected to the parallel circuit composed of the power-on buffer circuit and the second electric control switch 3 and then connecte...

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Abstract

The invention discloses a power distribution control circuit of a vehicle-mounted motor controller of an electric vehicle and a control method of the control circuit. The control circuit comprises a power battery, a complete vehicle logic unit, the vehicle-mounted motor controller, a drive motor controller, a power-on buffer circuit, a CAN bus and a vehicle-mounted electric control switch, wherein the complete vehicle logic unit is connected with the power battery, the vehicle-mounted motor controller and the drive motor controller, connected with a first electric control switch and a second electric control switch through low-tension control wires and then grounded; a negative electrode of the battery is connected to the vehicle-mounted motor controller and the drive motor controller; a positive electrode of the battery is connected with a parallel circuit formed by the power-on buffer circuit and the second electrical control switch and then connected to the drive motor controller and the vehicle-mounted motor controller. Multiple motor controllers share one power-on buffer circuit through specific control logic, a relay is used among the motor controllers for power distribution control, normal demands are met, and electrical safety can also be guaranteed.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control, in particular to a power distribution control circuit of a motor controller mounted on an electric vehicle and a control method thereof. Background technique [0002] When a pure electric vehicle is used as a special vehicle, it needs to be equipped with a top-mounted motor power system: for example, a sprinkler needs to be equipped with a sprinkler motor, and a sweeping vehicle needs to be equipped with a sweeping motor. When the motor controller is connected to a high-voltage power supply, there is an instantaneous current pulse that will cause damage to the fuse and relay of the power distribution. If each motor controller is equipped with a power-on buffer circuit, the cost will increase significantly. [0003] It will be very meaningful if a high-voltage power distribution method for solving the above-mentioned problems can be provided. Contents of the invention [0004] ...

Claims

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Application Information

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IPC IPC(8): B60L11/18B60L3/00
CPCB60L3/00B60L58/13Y02T10/70Y02T10/7072Y02T90/14
Inventor 朱长明黄龙李红朋
Owner CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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