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Vehicle electrically-driven EMF protection device and electrically-driven system

A protective device and vehicle technology, applied in the direction of electromechanical devices, vehicle components, motors, etc., can solve the problems of electromagnetic leakage in the motor junction box, and achieve the effect of improving electromagnetic protection, compact structure, and low space occupancy

Pending Publication Date: 2022-03-04
ZEEKR AUTOMOBILE (NINGBO HANGZHOU BAY NEW ZONE) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a vehicle electric drive EMF protection device and an electric drive system, the EMF protection device includes a motor junction box cover, a three-phase power line connecting plug-in cover and a three-phase power line cover The integrated shielding cover formed by sequentially connecting the body can at least solve the technical problem of electromagnetic leakage of the motor junction box in the electric drive system in the prior art, and prevent electromagnetic radiation from entering the car and causing harm to the human body

Method used

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  • Vehicle electrically-driven EMF protection device and electrically-driven system
  • Vehicle electrically-driven EMF protection device and electrically-driven system
  • Vehicle electrically-driven EMF protection device and electrically-driven system

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Embodiment

[0040] In the existing electric drive system of new energy vehicles, the OT terminal of the high-voltage power line of the driving motor commonly used at present is connected to the motor terminal through bolts. The motor housing is provided with a high-voltage junction box and an outlet hole for the installation and operation of the high-voltage line. When the high-voltage power line is led out, the position of the high-voltage junction box cover and the outlet hole of the power line often has the problem of electromagnetic radiation leakage, but only by improving the sealing level of the junction box cover and the outlet hole, the effect is limited. For low-voltage electronic control circuits, the electromagnetic interference is generally reduced by adding a filter circuit board, which requires sufficient space inside the motor junction box to install the filter circuit board. There are short boards with complex structure, serious space occupation, poor reliability and high co...

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Abstract

The invention provides a vehicle electrically-driven EMF protection device and an electrically-driven system.The vehicle electrically-driven EMF protection device comprises a shielding cover and a fixing support, the shielding cover comprises a first cover body, a second cover body and a third cover body which are sequentially connected, the first cover body is provided with a first containing cavity used for containing a motor junction box, and the second cover body is provided with a second containing cavity used for containing a motor junction box; the second cover body is provided with a second accommodating cavity for accommodating a three-phase power line connecting plug-in, and the third cover body is provided with a third accommodating cavity for accommodating a three-phase power line; the fixing support is arranged between the third cover body and the three-phase power line, and the fixing support is connected with the third cover body and the motor shell. According to the EMF protection device, the motor junction box, the three-phase power line connection plug-in and the three-phase power line can be fully shielded, the fixed support is connected with the shielding cover and the motor shell for limiting and restraining, the problem of electromagnetic leakage of the motor junction box in a dynamic state and a static state is effectively solved, and electromagnetic protection on people in a vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of electric drive systems, in particular to a vehicle electric drive EMF protection device and an electric drive system. Background technique [0002] The core components of electric vehicles include the power battery and its battery management system (BMS), the electric control system connecting the power battery and the motor controller, the voltage converter (DC / DC), and the electric drive system composed of the drive motor and the motor controller. , referred to as the three-electric system. The three-electric system has many electronic and electrical components, and its electromagnetic compatibility problem is particularly severe. As one of the high-voltage components of electric vehicles, the drive motor system has electromagnetic interference source components such as inverters and stator windings. The pulse modulation of the inverter will generate electromagnetic waves of different amplitudes and fr...

Claims

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Application Information

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IPC IPC(8): H02K11/01H02K11/02H02K5/22B60R16/02
CPCH02K11/0141H02K11/02H02K5/225B60R16/02Y02T10/64
Inventor 何元飞付彦茹蒋卫伟刘园园刘藏
Owner ZEEKR AUTOMOBILE (NINGBO HANGZHOU BAY NEW ZONE) CO LTD
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