A control method and system for automobile air conditioner

Abstract

The present invention discloses a method and system for controlling an automotive air conditioner. The method comprises: obtaining a vehicle's all-in-one architecture feature message; determining the vehicle's high-voltage architecture mode based on the all-in-one architecture feature message; wherein the all-in-one architecture feature message includes information about the vehicle's high-voltage architecture mode; obtaining and determining the vehicle's current operating mode based on the vehicle's current status information; and controlling the air conditioner's operation based on the vehicle's current operating mode, the vehicle's high-voltage architecture mode, and the vehicle's current status information. The present invention can identify the vehicle's high-voltage power distribution architecture and provide corresponding air conditioner control logic, thereby unifying control software and reducing development and maintenance costs.

Description

Technical Field

[0001] The present invention relates to the field of automobile air-conditioning control, and in particular to a control method and system for an automobile air-conditioning. Background Art

[0002] Currently, there are two main different architectures for high-voltage power distribution in new energy commercial vehicles: one high-voltage architecture is that the air-conditioning relay is arranged behind the main drive control circuit, and the other high-voltage architecture is that the air-conditioning relay is arranged behind the auxiliary drive control circuit.

[0003] When the air conditioning AC relay is arranged behind the main drive control circuit, the air conditioning PTC relay is controlled by a separate circuit. When the driving high voltage is powered on, the main drive circuit and the auxiliary drive circuit are closed, and the opening and closing of the air conditioning AC relay and the air conditioning PTC relay can be directly controlled; when the charging high voltage is powered on, only the auxiliary drive circuit is closed, and the main drive circuit must be closed to control the opening of the air conditioning AC relay.

[0004] When the air conditioning AC relay is arranged behind the auxiliary drive control circuit, the air conditioning PTC relay is controlled by a separate circuit. Both the driving high voltage power-on and the charging high voltage power-on close the auxiliary drive circuit, which can directly control the opening and closing of the air conditioning AC relay and the air conditioning PTC relay.

[0005] Different control logic is required for the two different high-voltage architectures when controlling vehicle charging air conditioning. During the control development process for the charging air conditioning function of new energy commercial vehicles, the vehicle controller (VCU) software development for different high-voltage architectures requires two different versions of VCU software for each high-voltage architecture. This also requires additional VCU function development, testing and verification, and after-sales maintenance, increasing development and maintenance costs throughout the vehicle's lifecycle R&D and management process. Summary of the Invention

[0006] The present invention provides a control method and system for an automobile air conditioner, which can identify the high-voltage power distribution architecture of an automobile and provide corresponding air conditioner control logic, thereby unifying the control software and reducing development and maintenance costs.

[0007] In order to solve the above technical problems, an embodiment of the present invention provides a method for controlling an automobile air conditioner, comprising:

[0008] Obtaining an all-in-one architecture feature message of the vehicle, and determining a high-voltage architecture mode of the vehicle based on the all-in-one architecture feature message; wherein the all-in-one architecture feature message includes high-voltage architecture mode information of the vehicle;

[0009] Obtain and determine the current operating mode of the vehicle based on the vehicle's current status information; wherein the vehicle's current status information includes: air conditioner AC switch status information, air conditioner PTC switch status information, charging gun connection signal information, battery pack current information, DCDC working status information, battery available output power, and key switch information;

[0010] The operation of the air conditioner is controlled according to the current operating mode of the entire vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle.

[0011] The method provided by the present invention logically couples the air-conditioning control functions under different high-voltage architectures into the same control process. The high-voltage power distribution architecture of the vehicle can be identified through the all-in-one architecture feature message, and the operation of the air-conditioning can be controlled according to the current operating mode of the vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle, thereby realizing the unification of control software and reducing the cost of development and maintenance.

[0012] Furthermore, the all-in-one architecture feature message includes high-voltage architecture mode information of the vehicle, wherein the high-voltage architecture mode includes a first architecture mode and a second architecture mode;

[0013] The first architecture mode is: the vehicle's air conditioning AC relay is arranged behind the main drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit;

[0014] The second architecture mode is that the vehicle's air conditioning AC relay is arranged behind the auxiliary drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit.

[0015] Furthermore, the acquisition and determination of the current operating mode of the vehicle based on the current state information of the vehicle is specifically as follows:

[0016] If the vehicle enters the Ready state after the key is powered on, it is determined that the vehicle is currently in the driving high-voltage mode;

[0017] If the key switch is in the ON position, the charging gun connection status is connected, the battery pack current is negative, and the DCDC working status is running, it is determined that the vehicle is currently in high-voltage charging mode.

[0018] Furthermore, the operation of the air conditioner is controlled according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle, and the current state information of the vehicle, specifically:

[0019] If the vehicle is currently in high-voltage driving mode, the air conditioner operation is controlled according to the available battery output power, the air conditioner AC switch status information, and the air conditioner PTC switch status information;

[0020] If the vehicle is currently in the high-voltage charging mode, the operation of the air conditioner is controlled according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information.

[0021] Furthermore, the operation of the air conditioner is controlled according to the available output power of the battery, the status information of the AC switch of the air conditioner, and the status information of the PTC switch of the air conditioner, specifically:

[0022] If the available battery output power is greater than the threshold for turning on the air conditioner, the air conditioner AC switch is closed, and the air conditioner PTC switch is not closed, the air conditioner AC relay is enabled and the electronic cooling fan is enabled;

[0023] If the available battery output power is greater than the threshold for allowing the air conditioner to be turned on, the air conditioner AC switch is not closed, and the air conditioner PTC switch is closed, the air conditioner PTC relay is enabled.

[0024] Furthermore, the control of the operation of the air conditioner according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information is specifically as follows:

[0025] If the AC switch of the air conditioner is not closed and the PTC switch of the air conditioner is closed again, the PTC relay of the air conditioner is enabled;

[0026] If the high-voltage architecture mode of the vehicle is the second architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the air conditioning AC relay is enabled and the electronic cooling fan is enabled;

[0027] If the high-voltage architecture mode of the vehicle is the first architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the all-in-one main drive relay is enabled, the motor IGBT is prohibited from being enabled, the air conditioning AC relay is enabled, and the electronic cooling fan is enabled.

[0028] The method provided by the present invention can identify different high-voltage architectures and select air-conditioning control methods corresponding to the different high-voltage architectures, thereby performing adaptive matching control, achieving the unification of control software, and reducing development and maintenance costs.

[0029] The present invention also provides a control system for an automobile air conditioner, the control system comprising a message acquisition module, a judgment module, and a control module;

[0030] The message acquisition module is used to obtain an all-in-one architecture feature message of the vehicle and determine the high-voltage architecture mode of the vehicle according to the all-in-one architecture feature message; wherein the all-in-one architecture feature message includes the high-voltage architecture mode information of the vehicle;

[0031] The judgment module is used to obtain and determine the current operating mode of the vehicle based on the current status information of the vehicle; wherein the current status information of the vehicle includes: air conditioner AC switch status information, air conditioner PTC switch status information, charging gun connection signal information, battery pack current information, DCDC working status information, battery available output power, and key switch information;

[0032] The control module is used to control the operation of the air conditioner according to the current operating mode of the vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle.

[0033] Furthermore, the all-in-one architecture feature message includes high-voltage architecture mode information of the vehicle, wherein the high-voltage architecture mode includes a first architecture mode and a second architecture mode;

[0034] The first architecture mode is: the vehicle's air conditioning AC relay is arranged behind the main drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit;

[0035] The second architecture mode is that the vehicle's air conditioning AC relay is arranged behind the auxiliary drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit.

[0036] Furthermore, the acquisition and determination of the current operating mode of the vehicle based on the current state information of the vehicle is specifically as follows:

[0037] If the vehicle enters the Ready state after the key is powered on, it is determined that the vehicle is currently in the driving high-voltage mode;

[0038] If the key switch is in the ON position, the charging gun connection status is connected, the battery pack current is negative, and the DCDC working status is running, it is determined that the vehicle is currently in high-voltage charging mode.

[0039] Furthermore, the operation of the air conditioner is controlled according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle, and the current state information of the vehicle, specifically:

[0040] If the vehicle is currently in high-voltage driving mode, the air conditioner operation is controlled according to the available battery output power, the air conditioner AC switch status information, and the air conditioner PTC switch status information;

[0041] If the vehicle is currently in high-voltage charging mode, the operation of the air conditioner is controlled according to the vehicle's high-voltage architecture mode, the air conditioner AC switch status information, and the air conditioner PTC switch status information;

[0042] The operation of the air conditioner is controlled according to the available output power of the battery, the status information of the AC switch of the air conditioner, and the status information of the PTC switch of the air conditioner, specifically:

[0043] If the available battery output power is greater than the threshold for turning on the air conditioner, the air conditioner AC switch is closed, and the air conditioner PTC switch is not closed, the air conditioner AC relay is enabled and the electronic cooling fan is enabled;

[0044] If the available battery output power is greater than the threshold for allowing the air conditioner to be turned on, the air conditioner AC switch is not closed, and the air conditioner PTC switch is closed, the air conditioner PTC relay is enabled;

[0045] The control of the operation of the air conditioner according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information is specifically as follows:

[0046] If the AC switch of the air conditioner is not closed and the PTC switch of the air conditioner is closed again, the PTC relay of the air conditioner is enabled;

[0047] If the high-voltage architecture mode of the vehicle is the second architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the air conditioning AC relay is enabled and the electronic cooling fan is enabled;

[0048] If the high-voltage architecture mode of the vehicle is the first architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the all-in-one main drive relay is enabled, the motor IGBT is prohibited from being enabled, the air conditioning AC relay is enabled, and the electronic cooling fan is enabled.

[0049] The system provided by the present invention logically couples the air-conditioning control functions under different high-voltage architectures into the same control process. It can identify the high-voltage power distribution architecture of the vehicle through the all-in-one architecture feature message, and control the operation of the air-conditioning according to the current operating mode of the vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle, thereby realizing the unification of control software and reducing the cost of development and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 : A schematic flow chart of a method for controlling an automobile air conditioner provided in the first embodiment of the present invention;

[0051] Figure 2 : A schematic diagram of a control loop of a first architecture mode provided in Embodiment 1 of the present invention;

[0052] Figure 3 : A schematic diagram of a control loop of the second architecture mode provided in the first embodiment of the present invention;

[0053] Figure 4 : A structural diagram of a control system for an automobile air conditioner provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0055] Example 1

[0056] Please refer to Figure 1 , is a flow chart of a method for controlling an automobile air conditioner provided in the first embodiment of the present invention, which mainly includes steps 101 to 103. The specific methods of each step are as follows:

[0057] Step 101: Acquire an all-in-one architecture feature message of a vehicle, and determine a high-voltage architecture mode of the vehicle according to the all-in-one architecture feature message.

[0058] The all-in-one architecture feature message includes the high-voltage architecture mode information of the vehicle.

[0059] Furthermore, the all-in-one architecture feature message includes high-voltage architecture mode information of the vehicle, wherein the high-voltage architecture mode includes a first architecture mode and a second architecture mode;

[0060] The first architecture mode is: the vehicle's air conditioning AC relay is arranged behind the main drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit;

[0061] The second architecture mode is that the vehicle's air conditioning AC relay is arranged behind the auxiliary drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit.

[0062] Please refer to Figure 2 , which is a schematic diagram of the control loop of the first architecture mode provided in the first embodiment of the present invention; please refer to Figure 3 , is a schematic diagram of the control loop of the second architecture mode provided in Example 1 of the present invention.

[0063] It should be noted that when the vehicle's high-voltage architecture mode is the first architecture mode, the vehicle's air conditioning AC relay is arranged behind the main drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit. If the vehicle is in the driving high-voltage mode, the main drive circuit and the auxiliary drive circuit will be closed, and the opening and closing of the air conditioning AC relay and the air conditioning PTC relay can be directly controlled. If the vehicle is in the charging high-voltage mode, the auxiliary drive circuit will be closed. At this time, the main drive circuit needs to be closed to control the opening and closing of the air conditioning AC relay.

[0064] When the vehicle's high-voltage architecture mode is the second architecture mode, the vehicle's air-conditioning AC relay is arranged behind the auxiliary drive control circuit, and the air-conditioning PTC relay is controlled by a separate circuit. Regardless of whether the vehicle is in the charging high-voltage mode or the driving high-voltage mode, the auxiliary drive circuit will be closed, and the air-conditioning AC relay and air-conditioning PTC relay can be directly controlled to open and close.

[0065] In this embodiment, the vehicle controller VCU can obtain the all-in-one architecture feature message through multiple ways, specifically:

[0066] Method 1: An all-in-one controller is configured in the vehicle so that the VCU can obtain the all-in-one architecture feature message sent by the all-in-one controller;

[0067] Method 2: Configure the all-in-one architecture feature message in the vehicle's IC instrument engineering mode so that the VCU can obtain the all-in-one architecture feature message sent by the IC instrument;

[0068] Method 3: A host computer is configured in the vehicle so that the VCU can obtain the all-in-one architecture feature message flashed by the OBD interface of the host computer.

[0069] In this embodiment, technicians can choose a suitable method for obtaining all-in-one architecture feature messages according to actual needs, and different all-in-one architecture feature message acquisition methods have different advantages: if the method of configuring the IC instrument engineering mode is adopted, for vehicles that have been completed or sold, they can be directly configured without the need for additional automotive parts, thereby reducing configuration costs; if the method of configuring an all-in-one controller or configuring a host computer is adopted, during the design and production of the vehicle, there is no need to develop different vehicle controller VCU software that adapts to the two architectures according to different high-voltage architecture modes, and replace the VCU controller software and hardware, thereby reducing the development and maintenance costs of VCU controller components, shortening the development and verification cycle, facilitating software maintenance and management, and having extremely high economic value.

[0070] Step 102: Obtain and determine the current operating mode of the vehicle based on the current status information of the vehicle.

[0071] Among them, the current status information of the vehicle includes: air conditioning AC switch status information, air conditioning PTC switch status information, charging gun connection signal information, battery pack current information, DCDC working status information, battery available output power, and key switch information.

[0072] Furthermore, the acquisition and determination of the current operating mode of the vehicle based on the current state information of the vehicle is specifically as follows:

[0073] If the vehicle enters the Ready state after the key is powered on, it is determined that the vehicle is currently in the driving high-voltage mode;

[0074] If the key switch is in the ON position, the charging gun connection status is connected, the battery pack current is negative, and the DCDC working status is running, it is determined that the vehicle is currently in high-voltage charging mode.

[0075] In this embodiment, if the vehicle is currently in the high-voltage driving mode, the air-conditioning control logic is the same regardless of the high-voltage architecture mode of the vehicle; in this mode, taking into account the over-discharge problem, the available output power of the vehicle battery should be greater than the threshold value for allowing the air-conditioning to be turned on. The threshold value for allowing the air-conditioning to be turned on is the limit value of the minimum output power of the battery pack, which is calculated based on the comprehensive consideration of the accessory power (based on the sum of the accessory powers such as DCDC, EAC, EPS, AC, PTC, etc.); at the same time, the restriction of the battery SOC on the turning on of the air-conditioning is cancelled, that is, when the battery SOC is low, the air-conditioning is also allowed to be turned on.

[0076] In this embodiment, if the vehicle is currently in high-voltage charging mode, the control logic for the air conditioner PTC relay remains the same regardless of the vehicle's configuration. By detecting and judging key switch information and the air conditioner PTC switch status, it is possible to prevent the vehicle from enabling charging due to the air conditioner PTC relay not being closed when the key switch is in different gears, thereby increasing the power consumption of the air conditioner PTC relay.

[0077] Step 103: Control the operation of the air conditioner according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle, and the current status information of the vehicle.

[0078] Furthermore, the operation of the air conditioner is controlled according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle, and the current state information of the vehicle, specifically:

[0079] If the vehicle is currently in high-voltage driving mode, the air conditioner operation is controlled according to the available battery output power, the air conditioner AC switch status information, and the air conditioner PTC switch status information;

[0080] If the vehicle is currently in the high-voltage charging mode, the operation of the air conditioner is controlled according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information.

[0081] Furthermore, the operation of the air conditioner is controlled according to the available output power of the battery, the status information of the AC switch of the air conditioner, and the status information of the PTC switch of the air conditioner, specifically:

[0082] If the available battery output power is greater than the threshold for turning on the air conditioner, the air conditioner AC switch is closed, and the air conditioner PTC switch is not closed, the air conditioner AC relay is enabled and the electronic cooling fan is enabled;

[0083] If the available battery output power is greater than the threshold for allowing the air conditioner to be turned on, the air conditioner AC switch is not closed, and the air conditioner PTC switch is closed, the air conditioner PTC relay is enabled.

[0084] Furthermore, the control of the operation of the air conditioner according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information is specifically as follows:

[0085] If the AC switch of the air conditioner is not closed and the PTC switch of the air conditioner is closed again, the PTC relay of the air conditioner is enabled;

[0086] If the high-voltage architecture mode of the vehicle is the second architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the air conditioning AC relay is enabled and the electronic cooling fan is enabled;

[0087] If the high-voltage architecture mode of the vehicle is the first architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the all-in-one main drive relay is enabled, the motor IGBT is prohibited from being enabled, the air conditioning AC relay is enabled, and the electronic cooling fan is enabled.

[0088] In this embodiment, the air conditioning AC switch and the air conditioning PTC switch are both rocker switches. When the air conditioning AC switch and the air conditioning PTC switch are closed respectively, the enabling signal will control the closure of the air conditioning AC relay and the air conditioning PTC relay respectively. In the charging air conditioning mode, it is necessary to identify whether the air conditioning AC relay or the air conditioning PTC relay switch is closed again before the air conditioning control can be performed, thereby avoiding charging enabling due to the relay switch being closed all the time, causing the air conditioning to increase the power consumption of the entire vehicle; in the driving air conditioning mode, the air conditioning control can be directly performed according to the closing status of the relay switch, without the driver having to re-operate the relay switch.

[0089] In this embodiment, when the air conditioner AC relay is enabled, the air conditioner AC performs heat dissipation in the cab, and the electronic cooling fan is enabled to cool the drive system components; when the air conditioner PTC relay is enabled, the air conditioner PTC performs heating in the cab.

[0090] In this embodiment, during the air conditioning control process, the VCU will send relevant information such as the SOC power, the current operating mode of the vehicle, and the vehicle fault status to the IC instrument so that the IC instrument can display the information.

[0091] The method provided by the present invention can identify different high-voltage architectures and select air-conditioning control methods corresponding to the different high-voltage architectures, thereby performing adaptive matching control, achieving the unification of control software, and reducing development and maintenance costs.

[0092] The method provided by the present invention logically couples the air-conditioning control functions under different high-voltage architectures into the same control process. The high-voltage power distribution architecture of the vehicle can be identified through the all-in-one architecture feature message, and the operation of the air-conditioning can be controlled according to the current operating mode of the vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle, thereby realizing the unification of control software and reducing the cost of development and maintenance.

[0093] Example 2

[0094] Please refer to Figure 4 , is a structural diagram of a control system for an automobile air conditioner provided in a second embodiment of the present invention, the control system includes a message acquisition module 201, a judgment module 202, and a control module 203;

[0095] The message acquisition module 201 is used to obtain an all-in-one architecture feature message of the vehicle and determine the high-voltage architecture mode of the vehicle according to the all-in-one architecture feature message; wherein the all-in-one architecture feature message includes the high-voltage architecture mode information of the vehicle;

[0096] The judgment module 202 is used to obtain and determine the current operating mode of the vehicle based on the current vehicle status information; wherein the current vehicle status information includes: air conditioner AC switch status information, air conditioner PTC switch status information, charging gun connection signal information, battery pack current information, DC / DC working status information, battery available output power, and key switch information;

[0097] The control module 203 is used to control the operation of the air conditioner according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle.

[0098] Furthermore, the all-in-one architecture feature message includes high-voltage architecture mode information of the vehicle, wherein the high-voltage architecture mode includes a first architecture mode and a second architecture mode;

[0099] The first architecture mode is: the vehicle's air conditioning AC relay is arranged behind the main drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit;

[0100] The second architecture mode is that the vehicle's air conditioning AC relay is arranged behind the auxiliary drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit.

[0101] Furthermore, the acquisition and determination of the current operating mode of the vehicle based on the current state information of the vehicle is specifically as follows:

[0102] If the vehicle enters the Ready state after the key is powered on, it is determined that the vehicle is currently in the driving high-voltage mode;

[0103] If the key switch is in the ON position, the charging gun connection status is connected, the battery pack current is negative, and the DCDC working status is running, it is determined that the vehicle is currently in high-voltage charging mode.

[0104] Furthermore, the operation of the air conditioner is controlled according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle, and the current state information of the vehicle, specifically:

[0105] If the vehicle is currently in high-voltage driving mode, the air conditioner operation is controlled according to the available battery output power, the air conditioner AC switch status information, and the air conditioner PTC switch status information;

[0106] If the vehicle is currently in high-voltage charging mode, the operation of the air conditioner is controlled according to the vehicle's high-voltage architecture mode, the air conditioner AC switch status information, and the air conditioner PTC switch status information;

[0107] The operation of the air conditioner is controlled according to the available output power of the battery, the status information of the AC switch of the air conditioner, and the status information of the PTC switch of the air conditioner, specifically:

[0108] If the available battery output power is greater than the threshold for turning on the air conditioner, the air conditioner AC switch is closed, and the air conditioner PTC switch is not closed, the air conditioner AC relay is enabled and the electronic cooling fan is enabled;

[0109] If the available battery output power is greater than the threshold for allowing the air conditioner to be turned on, the air conditioner AC switch is not closed, and the air conditioner PTC switch is closed, the air conditioner PTC relay is enabled;

[0110] The control of the operation of the air conditioner according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information is specifically as follows:

[0111] If the AC switch of the air conditioner is not closed and the PTC switch of the air conditioner is closed again, the PTC relay of the air conditioner is enabled;

[0112] If the high-voltage architecture mode of the vehicle is the second architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the air conditioning AC relay is enabled and the electronic cooling fan is enabled;

[0113] If the high-voltage architecture mode of the vehicle is the first architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the all-in-one main drive relay is enabled, the motor IGBT is prohibited from being enabled, the air conditioning AC relay is enabled, and the electronic cooling fan is enabled.

[0114] The system provided by the present invention logically couples the air-conditioning control functions under different high-voltage architectures into the same control process. It can identify the high-voltage power distribution architecture of the vehicle through the all-in-one architecture feature message, and control the operation of the air-conditioning according to the current operating mode of the vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle, thereby realizing the unification of control software and reducing the cost of development and maintenance.

[0115] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for controlling an automobile air conditioner, characterized in that: include: Obtaining an all-in-one architecture feature message for the vehicle, and determining a high-voltage architecture mode for the vehicle based on the all-in-one architecture feature message; wherein the all-in-one architecture feature message includes information about the vehicle's high-voltage architecture mode; the high-voltage architecture mode includes a first architecture mode and a second architecture mode; the first architecture mode is one in which the vehicle's air conditioning AC relay is positioned behind a main drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit; the second architecture mode is one in which the vehicle's air conditioning AC relay is positioned behind an auxiliary drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit; Obtain and determine the current operating mode of the vehicle based on the vehicle's current status information; wherein the vehicle's current status information includes: air conditioner AC switch status information, air conditioner PTC switch status information, charging gun connection signal information, battery pack current information, DCDC working status information, battery available output power, and key switch information; The operation of the air conditioner is controlled according to the current operating mode of the entire vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle.

2. The method for controlling an automobile air conditioner according to claim 1, wherein: The acquisition and determination of the current operating mode of the vehicle based on the current state information of the vehicle is specifically as follows: If the vehicle enters the Ready state after the key is powered on, it is determined that the vehicle is currently in the driving high-voltage mode; If the key switch is in the ON position, the charging gun connection status is connected, the battery pack current is negative, and the DCDC working status is running, it is determined that the vehicle is currently in high-voltage charging mode.

3. The method for controlling an automobile air conditioner according to claim 2, wherein: The controlling of the operation of the air conditioner according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle, and the current state information of the vehicle is specifically as follows: If the vehicle is currently in high-voltage driving mode, the air conditioner operation is controlled according to the available battery output power, the air conditioner AC switch status information, and the air conditioner PTC switch status information; If the vehicle is currently in the high-voltage charging mode, the operation of the air conditioner is controlled according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information.

4. The method for controlling an automobile air conditioner according to claim 3, wherein: The operation of the air conditioner is controlled according to the available output power of the battery, the status information of the AC switch of the air conditioner, and the status information of the PTC switch of the air conditioner, specifically: If the available battery output power is greater than the threshold for turning on the air conditioner, the air conditioner AC switch is closed, and the air conditioner PTC switch is not closed, the air conditioner AC relay is enabled and the electronic cooling fan is enabled; If the available battery output power is greater than the threshold for allowing the air conditioner to be turned on, the air conditioner AC switch is not closed, and the air conditioner PTC switch is closed, the air conditioner PTC relay is enabled.

5. The method for controlling an automobile air conditioner according to claim 3, wherein: The control of the operation of the air conditioner according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information is specifically as follows: If the AC switch of the air conditioner is not closed and the PTC switch of the air conditioner is closed again, the PTC relay of the air conditioner is enabled; If the high-voltage architecture mode of the vehicle is the second architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the air conditioning AC relay is enabled and the electronic cooling fan is enabled; If the high-voltage architecture mode of the vehicle is the first architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the all-in-one main drive relay is enabled, the motor IGBT is prohibited from being enabled, the air conditioning AC relay is enabled, and the electronic cooling fan is enabled.

6. A control system for an automobile air conditioner, characterized in that: The control system includes a message acquisition module, a judgment module, and a control module; The message acquisition module is used to obtain an all-in-one architecture feature message of the vehicle and determine the high-voltage architecture mode of the vehicle based on the all-in-one architecture feature message; wherein the all-in-one architecture feature message includes high-voltage architecture mode information of the vehicle; the high-voltage architecture mode includes a first architecture mode and a second architecture mode; the first architecture mode is: the vehicle's air conditioning AC relay is arranged behind the main drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit; the second architecture mode is: the vehicle's air conditioning AC relay is arranged behind the auxiliary drive control circuit, and the air conditioning PTC relay is controlled by a separate circuit; The judgment module is used to obtain and determine the current operating mode of the vehicle based on the current status information of the vehicle; wherein the current status information of the vehicle includes: air conditioner AC switch status information, air conditioner PTC switch status information, charging gun connection signal information, battery pack current information, DCDC working status information, battery available output power, and key switch information; The control module is used to control the operation of the air conditioner according to the current operating mode of the vehicle, the high-voltage architecture mode of the vehicle and the current status information of the vehicle.

7. The automobile air-conditioning control system according to claim 6, characterized in that: The acquisition and determination of the current operating mode of the vehicle based on the current state information of the vehicle is specifically as follows: If the vehicle enters the Ready state after the key is powered on, it is determined that the vehicle is currently in the driving high-voltage mode; If the key switch is in the ON position, the charging gun connection status is connected, the battery pack current is negative, and the DCDC working status is running, it is determined that the vehicle is currently in high-voltage charging mode.

8. The automobile air-conditioning control system according to claim 7, characterized in that: The controlling of the operation of the air conditioner according to the current operation mode of the vehicle, the high-voltage architecture mode of the vehicle, and the current state information of the vehicle is specifically as follows: If the vehicle is currently in high-voltage driving mode, the air conditioner operation is controlled according to the available battery output power, the air conditioner AC switch status information, and the air conditioner PTC switch status information; If the vehicle is currently in high-voltage charging mode, the operation of the air conditioner is controlled according to the vehicle's high-voltage architecture mode, the air conditioner AC switch status information, and the air conditioner PTC switch status information; The operation of the air conditioner is controlled according to the available output power of the battery, the status information of the AC switch of the air conditioner, and the status information of the PTC switch of the air conditioner, specifically: If the available battery output power is greater than the threshold for turning on the air conditioner, the air conditioner AC switch is closed, and the air conditioner PTC switch is not closed, the air conditioner AC relay is enabled and the electronic cooling fan is enabled; If the available battery output power is greater than the threshold for allowing the air conditioner to be turned on, the air conditioner AC switch is not closed, and the air conditioner PTC switch is closed, the air conditioner PTC relay is enabled; The control of the operation of the air conditioner according to the high-voltage architecture mode of the vehicle, the air conditioner AC switch status information, and the air conditioner PTC switch status information is specifically as follows: If the AC switch of the air conditioner is not closed and the PTC switch of the air conditioner is closed again, the PTC relay of the air conditioner is enabled; If the high-voltage architecture mode of the vehicle is the second architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the air conditioning AC relay is enabled and the electronic cooling fan is enabled; If the high-voltage architecture mode of the vehicle is the first architecture mode, the air conditioning AC switch is closed again, and the air conditioning PTC switch is not closed, the all-in-one main drive relay is enabled, the motor IGBT is prohibited from being enabled, the air conditioning AC relay is enabled, and the electronic cooling fan is enabled.

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