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Over-temperature protective method and system for electric driving system

An over-temperature protection and electric drive technology, which is applied in the field of vehicles, can solve problems such as over-temperature of the electric drive system, and achieve the effects of reducing low-voltage power consumption, reducing power, and reducing power-down operation or parking

Inactive Publication Date: 2017-12-19
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the first object of the present invention is to provide an over-temperature protection method for the electric drive system, which can effectively solve the problem of avoiding the over-temperature of the electric drive system without affecting the vehicle cost. The second purpose is to provide an over-temperature protection system for the electric drive system

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  • Over-temperature protective method and system for electric driving system
  • Over-temperature protective method and system for electric driving system
  • Over-temperature protective method and system for electric driving system

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Embodiment Construction

[0040] The embodiment of the present invention discloses an over-temperature protection method for an electric drive system, which avoids overheating of the electric drive system without affecting the cost of the entire vehicle, and reduces power reduction or shutdown of the entire vehicle caused by the overtemperature of the electric drive system.

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] In the first specific implementation manner, the over-temperature protection method of the electric drive...

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Abstract

The invention discloses an over-temperature protective method for an electric driving system. The over-temperature protective method comprises the steps that the temperature of a monitoring part of the electric driving system is obtained, and the monitoring part comprises a motor and / or a motor controller; when at least one of the temperature of the motor and the temperature of the motor controller is higher than a corresponding first preset temperature, whether an air conditioner system operates or not is judged, and if yes, an air conditioner is controlled to be stopped; and if no, the motor power of the electric driving system is decreased, or stopping is conducted. Through the over-temperature protective method for the electric driving system, the situation that in the largest heat-dissipation requirement, a cooling system and the air conditioner system simultaneously work is avoided; while the phenomenon that a vehicle decreases the power to operate or the vehicle is stopped is reduced, the power of a cooling fan and a cooling water pump can be decreased, the capacity of a storage battery and the power of a DC / DC converter are decreased accordingly, and the vehicle cost is reduced; and meanwhile the vehicle driving range is advantageously increased. The invention further discloses an over-temperature protective system for the electric driving system.

Description

technical field [0001] The present invention relates to the technical field of vehicles, and more specifically, relates to an over-temperature protection method of an electric drive system, and also relates to an over-temperature protection system of the electric drive system. Background technique [0002] When the whole vehicle is running under an extreme working condition, the electric drive system works with high power, and the radiator in the cooling system needs a large heat dissipation requirement. If the air-conditioning compressors work at the same time, the condenser in the air-conditioning system needs a certain amount of heat dissipation. At this time, the heat dissipation demand of the whole vehicle is large, and the motor is prone to overheating, causing the whole vehicle to run with reduced power or stop. In order to avoid this phenomenon, it is traditionally solved by selecting a high-power cooling fan or a high-power cooling water pump. [0003] However, al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60L15/20
CPCB60H1/00735B60L15/20Y02T10/72
Inventor 宋宗南
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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