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Series connection stroke increment type electric automobile high-voltage electricity quick-discharge control method

A technology of electric vehicles and control methods, which is applied to electric vehicles, electrical devices, vehicle components, etc., and can solve problems such as motor rotation

Inactive Publication Date: 2012-03-28
CHONGQING CHANGAN AUTOMOBILE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most conventional method is to quickly discharge through the motor controller to output high-voltage electric energy to the motor, but this solution must match the motor resolver in place, otherwise the motor will rotate during the high-voltage fast discharge process

Method used

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  • Series connection stroke increment type electric automobile high-voltage electricity quick-discharge control method
  • Series connection stroke increment type electric automobile high-voltage electricity quick-discharge control method
  • Series connection stroke increment type electric automobile high-voltage electricity quick-discharge control method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] The structure diagram of the high-voltage parts of the present invention is as follows figure 1 As shown: the battery is an energy storage device, there is no capacitor inside, the motor and PTC work must take energy from the battery, and the high-voltage power-on completes the energy output through the closing of the relay; the motor controller has a capacitor inside, and the battery is connected to the relay after the relay is connected. The motor controller is connected through a DC high-voltage harness, and the high voltage of the battery is consistent with the capacitor voltage of the motor controller; the motor controller and the motor are connected through a three-phase high-voltage harness; the PTC and the battery are also connected through a DC high-voltage harness, and the thermal management system TMS controls the switch; the vehicle The controller HCU is ...

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Abstract

The invention discloses a plug-in automobile high-voltage electricity quick-discharge control method. The main scheme adopted in the method is as follows: in the electricity discharge process of a finished automobile, the work of a pitch trim compensator (PTC) arranged in a thermal management system is controlled by the harmonious work of a hybrid control unit (HCU) and the thermal management system, and the high-voltage electricity in the capacitor of a motor can be rapidly discharged to be safe voltage. In the method, the normal operation of all critical components in the high-voltage electricity discharge process of the finished automobile is not influenced; and the method is rapid in response and simple in control of the whole quick-discharge process, and is capable of rapidly discharging the high-voltage electricity in high-voltage parts to be safe voltage in the electricity discharge process of the finished automobile so as to eliminate high-voltage security risks.

Description

technical field [0001] The invention belongs to the field of high-voltage control of Plug-in (namely, series-extended-range electric vehicles) automobiles, and in particular relates to a high-voltage fast discharge control method for Plug-in automobiles. Background technique [0002] The components involving high voltage in the Plug-in automotive system are all key components. Each key component will convert the high voltage into energy to drive the whole vehicle to run; when the vehicle stops and the driver leaves, if the high voltage remains in the key components, the Vehicle maintenance personnel and the driver themselves will pose a great safety risk, so how to quickly release the high-voltage electricity retained in the high-voltage components of the vehicle when the driver turns the key to OFF becomes very important. At present, the most conventional method is to quickly discharge through the motor controller to output high-voltage electric energy to the motor, but thi...

Claims

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Application Information

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IPC IPC(8): B60L3/00
Inventor 邓柯军严钦山苏岭
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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