CN-122008814-A - Anti-icing control method and device for automobile air conditioner, vehicle and storage medium

CN122008814ACN 122008814 ACN122008814 ACN 122008814ACN-122008814-A

Abstract

The application relates to an anti-icing control method and device for an automobile air conditioner, a vehicle and a storage medium, wherein the anti-icing control method for the automobile air conditioner comprises the steps of comparing an obtained temperature signal of an evaporator temperature sensor arrangement point with a temperature control threshold value in a current working mode of the air conditioner; the temperature control threshold value in each working mode of the air conditioner is the temperature of the arrangement point of the evaporator temperature sensor corresponding to the icing critical state of the lowest point of the surface temperature of the evaporator in each working mode of the air conditioner, and if the temperature signal is smaller than or equal to the temperature control threshold value, the air conditioner compressor is controlled to be closed. According to the application, by comparing the temperature signal acquired in real time with the temperature control threshold value in the current working mode of the air conditioner, the lowest point of the surface temperature of the evaporator in the current working mode can be known not to freeze, if the temperature signal is smaller than or equal to the temperature control threshold value, the air conditioner compressor is controlled to be closed, refrigeration is stopped, the temperature control threshold value corresponds to the working modes one by one, and the surface of the evaporator in each working mode of the air conditioner can be ensured not to freeze.

Inventors

SU JUNQI
ZHOU YONGLIN
ZENG XUEWEI
SHAO YANGCHUN
WANG QINGYONG
XIAO YINGYUAN

Assignees

东风商用车有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. An anti-icing control method for an automobile air conditioner is characterized by comprising the following steps: comparing the acquired temperature signal of the evaporator temperature sensor arrangement point with a temperature control threshold value in the current working mode of the air conditioner, wherein the temperature control threshold value in each working mode of the air conditioner is the temperature of the evaporator temperature sensor arrangement point corresponding to the icing critical state of the lowest point of the surface temperature of the evaporator in each working mode of the air conditioner; and if the temperature signal is smaller than or equal to the temperature control threshold value, controlling the air conditioner compressor to be closed.
2. The method for ice protection control of an automotive air conditioner as set forth in claim 1, wherein the method for determining the temperature control threshold value in each operation mode of the air conditioner includes: And measuring the temperature at the arrangement point of the evaporator temperature sensor when the lowest point of the surface temperature of the evaporator in each working mode is in an icing critical state aiming at all working modes of the air conditioner, and taking the temperature as a temperature control threshold value in the working mode.
3. An anti-icing control method for an automotive air conditioner as claimed in claim 2, The positions of the lowest points of the surface temperature of the evaporator are different in different working modes, and the positions of the arrangement points of the temperature sensors of the evaporator are the same.
4. The method for ice protection control of an automotive air conditioner as set forth in claim 2, further comprising, prior to determining the temperature at the evaporator temperature sensor placement point at the time of determining the ice critical state at the lowest point of the evaporator surface temperature in each of the operation modes: Dividing the surface of the evaporator transversely by m equally, and dividing the surface of the evaporator longitudinally by n equally to obtain mxn nodes, wherein each node is used as a temperature measuring point position, and m and n are positive integers larger than 1; And selecting one of the working modes of the air conditioner to perform temperature measurement, and obtaining a node with the lowest temperature in the working mode as an evaporator temperature sensor arrangement point.
5. The method for controlling anti-icing of an air conditioner of an automobile as claimed in claim 4, wherein said selecting one of the operation modes of the air conditioner to perform temperature measurement to obtain a node with the lowest temperature in the operation mode as an evaporator temperature sensor arrangement point comprises: selecting a working mode with highest use frequency, and measuring the temperatures of mxn nodes in the working mode; The lowest temperature point among mxn nodes is designated as P point, and P point is designated as the evaporator temperature sensor arrangement point.
6. The vehicle air conditioner anti-icing control method as recited in claim 1, further comprising: And if the temperature signal of the arrangement point of the evaporator temperature sensor is detected to rise to the preset temperature, controlling the air conditioner compressor to start.
7. The method for controlling ice protection of an automotive air conditioner as set forth in claim 1, The working modes comprise a blowing mode and an air quantity gear, wherein the blowing mode comprises a face blowing mode, a foot blowing mode, a defrosting mode, a face blowing and foot blowing mode, a face blowing and defrosting mode, a foot blowing and defrosting mode and a face blowing and foot blowing and defrosting mode, and the air quantity gear comprises a plurality of gears.
8. An anti-icing control device for an automobile air conditioner, comprising: The comparison judging module is used for comparing the acquired temperature signal of the evaporator temperature sensor arrangement point with a temperature control threshold value in the current working mode of the air conditioner, wherein the temperature control threshold value in each working mode of the air conditioner is the temperature of the evaporator temperature sensor arrangement point corresponding to the icing critical state of the lowest point of the surface temperature of the evaporator in each working mode of the air conditioner; and the control module is used for controlling the air conditioner compressor to be closed if the temperature signal is smaller than or equal to the temperature control threshold value.
9. A vehicle comprising the vehicle air conditioner anti-icing control device according to claim 8.
10. A computer readable storage medium, wherein an auto air conditioner anti-icing control program is stored on the computer readable storage medium, wherein the auto air conditioner anti-icing control program, when executed by a processor, implements the steps of the auto air conditioner anti-icing control method according to any one of claims 1 to 7.

Description

Anti-icing control method and device for automobile air conditioner, vehicle and storage medium Technical Field The application relates to the technical field of automobile air conditioners, in particular to an anti-icing control method and device for an automobile air conditioner, a vehicle and a storage medium. Background At present, the function of the air conditioner evaporator sensor is to detect the temperature of wind passing through the evaporator, feed back the detected actual temperature of the wind to the air conditioner temperature controller, and the air conditioner temperature controller compares the set temperature control threshold with the temperature fed back by the evaporator sensor to send a working state instruction to the air conditioner compressor, and the air conditioner compressor starts or stops working after receiving the instruction. In the related art, the temperature sensor of the air conditioner evaporator is generally arranged at the front end of the evaporator, but the evaporator has a certain area, the temperature of the air blown out by the air conditioner blower is different through different positions of the evaporator, for example, the temperature sensor of the evaporator is arranged at a high temperature position, the temperature detected by the temperature sensor and fed back to the temperature controller is relatively high, the temperature controller can not send a command for stopping the compressor, the compressor can continue to refrigerate, a low-temperature area on the surface of the evaporator can be frozen, the refrigerating performance of the air conditioner is reduced, and the air conditioner can not air out seriously. Therefore, there is a need to devise a new anti-icing control method for an air conditioner of an automobile to overcome the above-mentioned problems. Disclosure of Invention The application provides an anti-icing control method and device for an automobile air conditioner, a vehicle and a storage medium, which can solve the technical problem that the surface of an evaporator is easy to freeze in the related art. In a first aspect, an embodiment of the present application provides an anti-icing control method for an automobile air conditioner, including: comparing the acquired temperature signal of the evaporator temperature sensor arrangement point with a temperature control threshold value in the current working mode of the air conditioner, wherein the temperature control threshold value in each working mode of the air conditioner is the temperature of the evaporator temperature sensor arrangement point corresponding to the icing critical state of the lowest point of the surface temperature of the evaporator in each working mode of the air conditioner; and if the temperature signal is smaller than or equal to the temperature control threshold value, controlling the air conditioner compressor to be closed. With reference to the first aspect, in one implementation manner, the method for determining a temperature control threshold value in each working mode of an air conditioner includes: And measuring the temperature at the arrangement point of the evaporator temperature sensor when the lowest point of the surface temperature of the evaporator in each working mode is in an icing critical state aiming at all working modes of the air conditioner, and taking the temperature as a temperature control threshold value in the working mode. With reference to the first aspect, in one embodiment, the positions of the lowest points of the surface temperatures of the evaporator in the different operation modes are different, and the positions of the placement points of the temperature sensors of the evaporator are the same. With reference to the first aspect, in an embodiment, before determining the ice critical state at the lowest point of the evaporator surface temperature in each operation mode, the method further includes: Dividing the surface of the evaporator transversely by m equally, and dividing the surface of the evaporator longitudinally by n equally to obtain mxn nodes, wherein each node is used as a temperature measuring point position, and m and n are positive integers larger than 1; And selecting one of the working modes of the air conditioner to perform temperature measurement, and obtaining a node with the lowest temperature in the working mode as an evaporator temperature sensor arrangement point. With reference to the first aspect, in an implementation manner, the selecting one of the working modes of the air conditioner to perform temperature measurement, to obtain a node with the lowest temperature in the working mode as an evaporator temperature sensor arrangement point includes: selecting a working mode with highest use frequency, and measuring the temperatures of mxn nodes in the working mode; The lowest temperature point among mxn nodes is designated as P point, and P point is designated as the evaporator temperature sensor arrange