DC-bus-capacitor discharge device of motor controller used for electric vehicle and electric vehicle

A technology of DC bus capacitor and motor controller, which is applied in electric vehicles, electrical devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. Forgetting and other problems to achieve the effect of ensuring and maintaining safety

Active Publication Date: 2014-06-25
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the disadvantage of the prior art is that the manual discharge technology of the DC bus high-voltage electric motor controller for electric vehicles, that is, the method of manually discharging the bus capacitance is easily forgotten by the maintenance personnel in practical operations, which makes it easy for maintenance Persons are at risk of electric shock
The electric vehicle motor controller automatically activ

Method used

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  • DC-bus-capacitor discharge device of motor controller used for electric vehicle and electric vehicle
  • DC-bus-capacitor discharge device of motor controller used for electric vehicle and electric vehicle

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Embodiment Construction

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0020] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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PUM

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Abstract

The invention proposes a DC-bus-capacitor discharge device of a motor controller used for an electric vehicle. The DC-bus-capacitor discharge device includes a discharge module; a first controllable switch which is serially connected with the discharge module and connected in parallel with a DC bus capacitor after being serially connected with the discharge module; and a second switch connected in parallel with the first controllable switch. The motor controller of the electric vehicle controls the first controllable switch to switch on after receiving a switch-off signal of the electric vehicle so that the DC bus capacitor is discharged for a first time through the discharge module, and the DC bus capacitor is discharged for a second time through the discharge module after the second switch is switched on. The discharge device is capable of discharging the residual high voltage of the bus capacitor for twice after the electric vehicle is shut down so that the discharge device has a dual discharge function and high-voltage operation and maintenance security of maintenance personnel is ensured in a substantial degree. The invention also proposes the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a DC bus capacitor discharge device for a motor controller of an electric vehicle and an electric vehicle having the same. Background technique [0002] At present, the advantages of high energy saving and low pollution of electric vehicles make them become the main direction of contemporary automobile development. The voltage of electric vehicle batteries is usually high voltage, and the battery voltage will become higher and higher in the future. Therefore, while people enjoy the high-efficiency, energy-saving, It also brings more safety hazards of high-voltage electricity to passengers or vehicle maintenance personnel. Especially for maintenance personnel of high-voltage electrical components, they are more threatened by high-voltage electricity. [0003] The motor controller in electric vehicles is a high-voltage and high-power component. There is a high-voltage b...

Claims

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Application Information

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IPC IPC(8): H02H9/04B60L3/00
Inventor 王野王春凤闫永亮
Owner BEIQI FOTON MOTOR CO LTD
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