Power-on control method for electric vehicle air-conditioning system comprising air conditioner pre-charge resistor

A pre-charging resistor, electric vehicle technology, applied in electric vehicles, auxiliary motor power supply, current collectors, etc., can solve the problems of instantaneous current increase of air-conditioning compressor, power battery, compressor and fuse damage, etc., to prevent damage effect

Inactive Publication Date: 2018-08-28
北汽重型汽车有限公司
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Problems solved by technology

[0003] In view of this, the present invention provides a power-on control method for an electric vehicle air-conditioning system including an air-conditioning pre-charging re

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  • Power-on control method for electric vehicle air-conditioning system comprising air conditioner pre-charge resistor

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[0017] The following description and drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The examples are only representative of possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the invention includes the full scope of the claims, along with all available equivalents of the claims.

[0018] like figure 1 As shown, in some illustrative embodiments, there is provided a power-on control method for an electric vehicle air-conditioning system including an air-conditioning pre-charging resistor, the method comprising:

[0019] 101: The air-conditioning control panel sends an A / C air-conditioning reque...

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Abstract

The invention provides a power-on control method for an electric vehicle air-conditioning system comprising an air conditioner pre-charge resistor. The power-on control method includes the steps thatan entire vehicle controller sends a pre-charge command to a battery management system; the battery management system determines whether or not the air conditioner pre-charging is completed, and a judgment result is fed back to the entire vehicle controller; the entire vehicle controller sends a control signal to the battery management system, turns on the air conditioner high voltage and disconnects the pre-charge resistor. The pre-charge resistor is added to a compressor, the actuation of a compressor high-voltage relay is controlled by judgement of the pre-charge resistor, the safety of anelectric vehicle fuse, a power battery and the compressor is ensured, and damage to an electric vehicle due to the sudden charging of high-voltage electricity for the compressor is eliminated.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle control, and in particular relates to a power-on control method for an electric vehicle air-conditioning system including an air-conditioning pre-charging resistor. Background technique [0002] At present, almost all cars are equipped with car air conditioners. In conventional cars, the car air conditioner is opened by the user on the air conditioning control panel, and then the engine drives the compressor to run. However, in electric vehicles, the compressor is directly powered by the high-voltage power of the power battery. If the user directly turns on the compressor, the current of the compressor will increase instantaneously, which will cause great damage to the power battery, compressor and fuse. The current technology is temporarily Can't solve this problem well. Contents of the invention [0003] In view of this, the present invention provides a power-on control method for an...

Claims

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Application Information

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IPC IPC(8): B60L1/00B60L3/00
CPCB60L1/003B60L3/0023B60L3/0046B60L3/0084
Inventor 于法祥徐小兵李伟鹏施龙刘诚杨万里张念昱
Owner 北汽重型汽车有限公司
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