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Electric motor coach integrated liquid cooling air conditioner control method and system and electric motor coach

A technology for electric passenger cars and control methods, which is applied to vehicle components, air handling equipment, heating/cooling equipment, etc., and can solve the problems that electric air conditioning compressors are not fully balanced and affect the life of the air conditioning system, etc., and achieve extended service life and energy-saving control The effect of the strategy

Pending Publication Date: 2022-04-29
ZHONGTONG BUS HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the charging process, the power battery generates a large amount of heat, which requires a liquid cooling system to cool down and maintain a constant temperature of each unit of the power battery. The inventors found that there is a hard cut-off problem when the liquid cooling part of the integrated liquid-cooled air conditioner is closed. The power supply of the air conditioner is cut off, and the electric air conditioner compressor is not completely balanced, which affects the life of the air conditioner system

Method used

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  • Electric motor coach integrated liquid cooling air conditioner control method and system and electric motor coach
  • Electric motor coach integrated liquid cooling air conditioner control method and system and electric motor coach
  • Electric motor coach integrated liquid cooling air conditioner control method and system and electric motor coach

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Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a liquid-cooled air-conditioning control method for an electric bus, which is applied to the integrated liquid-cooled air-conditioning system of an electric bus, such as figure 1 As shown, the integrated liquid-cooled air conditioner in this embodiment is connected to the vehicle controller, and its work is controlled by the vehicle controller. The vehicle controller is connected to the integrated power supply containing DCDC, which can control the operation of the integrated power supply. The vehicle controller Also connected with BMS system and ATS cooling system, able to control its work, such as figure 2 As shown, the integrated power supply supplies power to the integrated liquid-cooled air conditioner, BMS system, ATS cooling system and vehicle controller.

[0034] The BMS system is used to send the actual liquid cooling demand of the battery, and wake up the vehicle controller and integrated power supply.

[0035] The output of the powe...

Embodiment 2

[0054] This embodiment provides an electric bus integrated liquid-cooled air-conditioning control system, including:

[0055] Judgment module: configured to judge whether the vehicle is in a non-charging state and the charging gun is in a plugged state;

[0056] Air conditioner shutdown module: It is configured to control the compressor, condensing fan and evaporating fan of the integrated liquid-cooled air conditioner to shut down sequentially within the set time N seconds if the whole vehicle is not charging and the charging gun is inserted. Shut down the liquid-cooled air conditioner, otherwise control the integrated liquid-cooled air conditioner to continue to work;

[0057] Power-off module: It is configured to cut off the power supply to the air-conditioning panel, DCDC and water pump, and the auxiliary contactor in the high-voltage box after the integrated liquid-cooled air conditioner is shut down.

Embodiment 3

[0059] This embodiment provides an electric bus, which is installed with the electric bus integrated liquid-cooled air-conditioning control system described in Embodiment 2, and the control system works according to the method described in Embodiment 1.

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Abstract

The invention relates to an electric motor coach integrated liquid cooling air conditioner control method and system and an electric motor coach. The method comprises the following steps that whether the whole coach is in a non-charging state or not and whether a charging gun is in a gun inserting state or not is judged; if the whole vehicle is in the non-charging state and the charging gun is in the gun inserting state, a compressor, a condensation fan and an evaporation fan of the integrated liquid cooling air conditioner are sequentially controlled to be turned off within the set time N seconds, the liquid cooling air conditioner is turned off when integration is completed, and otherwise, the integrated liquid cooling air conditioner is controlled to continue working; after the integrated liquid-cooled air conditioner is shut down, a power-off instruction is sent out, power supply to the air conditioner panel is cut off, power supply to the DCDC and the water pump is cut off, and then the auxiliary contactor in the high-voltage box is cut off, by means of the control method, hard cut-off of the air conditioner is avoided, and the service life of the air conditioner is prolonged.

Description

technical field [0001] The invention relates to the technical field of electric passenger cars, in particular to an electric passenger car integrated liquid-cooled air-conditioning control method and system, and the electric passenger car. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] At present, cities have basically completed the transition from fuel-fueled buses to pure electric buses. Some cities have also formulated fuel vehicle phase-out plans to gradually phase out fuel vehicles and realize pure electric operation in cities. The service life of the power battery has become the most concerned issue for customers. For this reason, the power battery of the liquid cooling system has begun to be fully promoted in the market. The same battery attenuation adopts the liquid cooling system to extend the life of the power battery for more than thre...

Claims

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Application Information

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IPC IPC(8): B60H1/00
CPCB60H1/00371B60H1/00392B60H1/00642
Inventor 齐洪磊裴崇利周雨辉周广斌韩经鲁李明超朱树鹏杨帆刘志
Owner ZHONGTONG BUS HLDG
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