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Overvoltage protection structure of electric vehicle driver and electric vehicle

An overvoltage protection, electric vehicle technology, applied in emergency protection circuit devices for limiting overcurrent/overvoltage, electric vehicles, emergency protection circuit devices, etc., can solve the problems of complex process and high cost of overvoltage protection, reaching Simplify the production process, enhance product competitiveness, and achieve the effect of automation

Active Publication Date: 2012-02-01
SUZHOU INOSA UNITED POWER SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an electric vehicle drive overvoltage protection structure and an electric vehicle

Method used

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  • Overvoltage protection structure of electric vehicle driver and electric vehicle
  • Overvoltage protection structure of electric vehicle driver and electric vehicle

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Embodiment Construction

[0020] The present invention utilizes multi-layer PCB technology to press-fit the positive and negative busbars of the DC bus to both sides of the insulating medium, and connect the positive and negative poles of the switching device to the positive and negative busbars pressed on the insulating medium, so that each switch The positive and negative busbar loops of the device are very short to eliminate lead inductance; at the same time, the distributed capacitance between the positive and negative busbars separated by the insulating medium is greatly improved, which is completely sufficient to suppress the peak voltage caused by the switching of the switching device.

[0021] Such as figure 1 Shown is a schematic diagram of an embodiment of the overvoltage protection structure of the electric vehicle driver of the present invention. In this implementation, the overvoltage protection structure includes a DC bus bar connected to the switching device, and the DC bus bar includes ...

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Abstract

The invention relates to an overvoltage protection structure of an electric vehicle driver, which comprises a direct current busbar connected to a switch device. The direct current busbar comprises a positive busbar made of metal sheets, a negative busbar and an insulating medium, wherein the positive busbar and the negative busbar are respectively pressed to the upper surface and the lower surface of the insulating medium. Furthermore, the invention discloses an electric vehicle with the overvoltage protection structure. According to the invention, the material cost can be saved by 20-30% in comparison with a laminated copper brand structure and a non-inductive capacitor structure by simplifying the direct current busbar without the use of a non-inductive capacitor; the complexity of production can be lowered; and automatic production can be achieved.

Description

technical field [0001] The invention relates to an overvoltage control technology during the shutdown process of a power switching device, and more specifically relates to an overvoltage protection structure of an electric vehicle driver and an electric vehicle. Background technique [0002] In recent years, under the influence of global environmental problems and transportation environmental problems, more and more attention has been paid to battery-driven vehicles (such as electric vehicles, electric bicycles, etc.). At present, electric vehicles have become the most promising new energy vehicles after internal combustion engine vehicles, and various governments and major automobile companies around the world have regarded electric vehicles as the future development direction. [0003] In an electric vehicle, the motor is generally controlled by a motor driver to drive the wheels to rotate. The working current of the motor driver is very large, so when the switching devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04B60L3/00
Inventor 潘波何承曾许小燕
Owner SUZHOU INOSA UNITED POWER SYST CO LTD