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Discharging method of supporting capacitor of electric automobile driving system

A technology for supporting capacitors and driving systems, applied in the field of circuits, can solve problems such as charge exhaustion, and achieve the effect of reducing failure points, reducing costs, and reducing devices

Inactive Publication Date: 2016-01-13
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for discharging the support capacitor of the drive system of an electric vehicle, so as to solve the technical problem of how to quickly exhaust the charge on the support capacitor

Method used

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  • Discharging method of supporting capacitor of electric automobile driving system
  • Discharging method of supporting capacitor of electric automobile driving system
  • Discharging method of supporting capacitor of electric automobile driving system

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Embodiment Construction

[0031] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0032] An embodiment of the present invention provides a method for discharging a support capacitor of an electric vehicle drive system, wherein, as figure 1 As shown, the electric vehicle drive system includes a support capacitor C, an inverter three-phase bridge connected to both ends of the support capacitor C, a three-phase motor M connected to the inverter three-phase bridge, and a discharge resistor R c...

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Abstract

The invention discloses a discharging method of a supporting capacitor of an electric automobile driving system and belongs to the technical field of circuits in order to solve the technical problem how to fast run out charges on the supporting capacitor. The electric automobile driving system comprises the supporting capacitor, inverse three-phase axles connected with the two ends of the supporting capacitor, and a three-phase motor connected with the inverse three-phase axles. The discharging method includes the steps that the electric automobile driving system is electrically processed; the inverse three-phase axles are driven so that the three-phase motor can be electrically connected with the supporting capacitor, and the supporting capacitor is discharged through internal resistance of the three-phase motor.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a method for discharging a support capacitor of an electric vehicle drive system. Background technique [0002] As people pay more and more attention to the protection of the environment and the effective and rational use of energy, major automobile manufacturers are researching various alternatives to fuel-engined vehicles, such as electric vehicles. [0003] In the electric vehicle drive system, the motor controller contains the support capacitor (the effect of the filter capacitor (for smoothing the waveform) and the energy storage capacitor (for the transient high current demand)). The support capacitor inside the electric vehicle drive system will still have undischarged charges after the vehicle is parked. Although this part of the charge can be consumed by the resistor connected in parallel at both ends of the capacitor, the discharge time needs to be selected reasonably...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L11/00
CPCY02T10/70Y02T10/72
Inventor 陈建明吴佐来王丽婷
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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