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Protection circuit of electric vehicle electric drive system and electric vehicle electric drive system

An electric drive system and drive circuit technology, applied in the field of robots, can solve problems such as safety accidents, and achieve the effects of improving reliability, low cost and simple structure

Active Publication Date: 2021-08-31
HUNAN CSR TIMES ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the large-scale operation of electric vehicles, many safety accidents have occurred in the electric drive system of electric vehicles.

Method used

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  • Protection circuit of electric vehicle electric drive system and electric vehicle electric drive system
  • Protection circuit of electric vehicle electric drive system and electric vehicle electric drive system

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Embodiment Construction

[0035] 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.

[0036] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0037] During the driving of an electric vehicle, i...

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Abstract

A protection circuit for an electric drive system of an electric vehicle, which includes: a power supply control circuit, which is used to control the operating state of the drive circuit according to the received state signal of the electric drive system; a short circuit control circuit, which is used to The state signal of the drive system controls the operation state of the rectifier and inverter circuit; wherein, when the state signal of the electric drive system is the first state signal representing a fault in the system, the power supply control circuit is configured to turn off the power supply of the drive circuit, so that the drive circuit is in a non- Running state: the short-circuit control circuit is configured to control the closing of the corresponding controllable switch of the rectification and inverter circuit, so that the AC terminal of the rectification and inverter circuit is short-circuited. The protection circuit has a simple structure and low cost, and it can actively stop the rectification and inverter circuit by cutting off the power supply of the drive circuit when the system fails, so that the direct current generated by the rectification and inverter circuit will not flow to the battery and cause damage to the battery. The battery is overcharged.

Description

technical field [0001] The invention relates to the technical field of robots, in particular to a protection circuit of an electric drive system of an electric vehicle and the electric drive system of the electric vehicle. Background technique [0002] In recent years, the production and sales of electric vehicles have reached an explosive period. With the large-scale operation of electric vehicles, many safety accidents have occurred in the electric drive system of electric vehicles. In order to reduce the occurrence of safety accidents, on the one hand, manufacturers of electric vehicles and electric drive systems strengthen their reliability through various tests, and on the other hand, through some protection circuits, electric vehicles can be safely protected in case of failure, so as to avoid safety accidents happened. Contents of the invention [0003] The present invention provides a protection circuit for an electric drive system of an electric vehicle, characte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/04
CPCB60L3/04Y02T10/72
Inventor 古强张迪德王坚夏一帆李勇彭再武石魏肖小春黄志勇
Owner HUNAN CSR TIMES ELECTRIC VEHICLE
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