A constant-temperature cabin control method and system for a new energy vehicle

Abstract

This invention discloses a method for controlling the temperature-controlled cabin of a new energy vehicle, belonging to the field of new energy vehicles. The method includes: selecting and activating an overheat protection setting for the temperature-controlled cabin within a power-on / off cycle, while simultaneously feeding this information back to the vehicle's large screen; the setting includes an AC mode and a no-AC mode; and determining the functional state to be entered by the selected setting based on the ambient temperature and vehicle status, the functional state including a function maintenance state and a function deactivation state. Furthermore, this invention also proposes a temperature-controlled cabin control system for new energy vehicles based on the aforementioned method. This invention achieves intelligent temperature control of the vehicle cabin, preventing overheating caused by prolonged parking in high-temperature environments, thereby providing users with a more comfortable cabin environment.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicles. Specifically, this invention relates to a method and system for controlling the constant temperature cabin of a new energy vehicle. Background Technology

[0002] When a vehicle is left parked for an extended period during the summer or exposed to direct sunlight after use, the interior temperature can accumulate and rise, leading to a series of adverse effects, including:

[0003] 1) Accelerated aging of interior materials: High temperatures accelerate the oxidation and aging process of interior materials, especially leather and plastics, causing cracks, fading or deformation in parts such as seats, dashboards and door panels, affecting aesthetics and service life.

[0004] 2) Odor generation: Under high temperatures, the chemical substances in the enclosed space of the car evaporate faster. For example, the glue and plastic in the interior materials release harmful gases, producing a pungent odor, affecting the air quality inside the car, and posing a potential threat to the health of the occupants.

[0005] 3) Driving safety risks: High temperatures may cause flammable and explosive items inside the vehicle, such as lighters and perfume bottles, to explode, increasing safety hazards. Additionally, overheated seats and steering wheels may affect driver comfort and dexterity, indirectly impacting driving safety.

[0006] 4) Electronic equipment failure: In-vehicle electronic equipment such as the central control screen and audio system may malfunction or experience performance degradation due to overheating when operating at high temperatures, affecting the user experience and the reliability of vehicle functions.

[0007] 5) Increased energy consumption: When the vehicle is restarted, the air conditioning system needs to run for a long time and at high intensity in order to quickly reduce the temperature inside the vehicle. This not only consumes more energy and increases operating costs, but may also put an extra burden on the air conditioning system itself and shorten its service life.

[0008] Relying on existing remote air conditioning and other functions does not fully solve the pain points. The method of allowing customers to remotely turn on the air conditioning in advance before using the car requires a clear schedule for car use and cannot solve the problem of vehicle damage caused by excessively high interior temperature during parking. Summary of the Invention

[0009] This invention aims to overcome the shortcomings of existing technologies and proposes a constant temperature cabin control method and system for new energy vehicles to achieve the following objectives: realize intelligent constant temperature control of the vehicle cabin, prevent overheating caused by the vehicle being parked in a high temperature environment for a long time, and thus provide users with a more comfortable cabin environment.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is: a method for controlling the constant temperature cabin of a new energy vehicle, the method comprising the following steps:

[0011] Step S1: Within one power-on / off cycle, select and activate the overheat protection setting for the constant temperature cabin and simultaneously send feedback to the vehicle's large screen. The setting includes AC mode and no AC mode. In AC mode, the cabin temperature is regulated by the blower and compressor. In no AC mode, the cabin temperature is regulated by the blower. The entire vehicle's low-voltage power supply status changes from non-OFF to OFF and back to non-OFF, which is considered one power-on / off cycle. Within one power-on / off cycle, the selected setting remains unchanged.

[0012] Step S2: Determine the functional state that the selected setting item will enter based on the ambient temperature and vehicle status. The functional state includes a function maintenance state and a function exit state. In the function maintenance state, the thermal management system of the constant temperature cabin continuously sends network management messages to maintain network wake-up to control the operation of the equipment in AC mode or no AC mode, and starts timing. In the function exit state, the thermal management system no longer maintains network wake-up to control the equipment to stop in AC mode or no AC mode, and restores the circulation damper and mode damper to the power-off default position.

[0013] Furthermore, in step S2, within one power-on / off cycle and before the vehicle enters sleep mode, if the ambient temperature and vehicle status simultaneously meet the following conditions:

[0014] Vehicle defense;

[0015] The vehicle's low-voltage power supply mode is OFF.

[0016] The ambient temperature outside the vehicle exceeds the first outside temperature threshold.

[0017] The battery's state of charge (SOC) is greater than the first SOC threshold.

[0018] Then it is determined that the vehicle has entered the function maintenance state.

[0019] Furthermore, in the function exit state, if the vehicle's low-voltage power supply mode is detected to switch from non-OFF to OFF, then return to step S1; otherwise, maintain the function exit state.

[0020] Furthermore, in the state where the AC mode is not active, if the vehicle simultaneously meets the following conditions:

[0021] The ambient temperature outside the vehicle exceeds the second outside temperature threshold.

[0022] The interior temperature of the vehicle exceeds the first interior temperature threshold.

[0023] In the function maintenance state, the following additional actions will be performed: blower is turned on at maximum speed; external air circulation is activated; front air blowing mode is switched to face blowing mode, until the vehicle meets any of the following conditions:

[0024] The ambient temperature outside the vehicle is lower than the third outside temperature threshold.

[0025] The interior temperature is lower than the second interior temperature threshold.

[0026] Then, it will stop performing additional actions, namely, turning off the blower, restoring the circulation damper and mode damper to their default positions after power-off, and continuing to maintain the function.

[0027] Furthermore, while maintaining AC mode functionality, if the vehicle simultaneously meets the following conditions:

[0028] The ambient temperature outside the vehicle exceeds the second outside temperature threshold.

[0029] The interior temperature of the vehicle exceeds the third interior temperature threshold.

[0030] In the function maintenance state, the following additional actions will be performed: blower at maximum setting; internal circulation will be activated; compressor will be activated for cabin cooling; front air blowing mode will be switched to face blowing mode, until the vehicle meets any of the following conditions:

[0031] The ambient temperature outside the vehicle is lower than the third outside temperature threshold.

[0032] The interior temperature is below the fourth interior temperature threshold.

[0033] Then, it will stop performing additional actions, namely, shutting down the blower, stopping the compressor speed request, restoring the circulation damper and mode damper to their default power-down positions, and continuing to maintain the function.

[0034] Furthermore, in the function maintenance state, if the high voltage status of the vehicle is detected to change from ON to OFF, a high voltage request is actively sent; if the vehicle is currently performing additional actions after the high voltage status of the vehicle is detected to change from ON to OFF, the additional actions are stopped and a high voltage request is actively sent again; within a preset time after the high voltage request is sent, it is determined whether the high voltage status of the vehicle has returned to ON. If the high voltage has returned to ON, the function maintenance state is maintained; if the high voltage is still OFF, the function exit state is entered.

[0035] Furthermore, in the function-maintaining state, if the vehicle meets any of the following conditions:

[0036] Vehicles are deactivated;

[0037] The vehicle's low-voltage power supply mode is in the non-OFF state;

[0038] The ambient temperature outside the vehicle is less than or equal to the first ambient temperature threshold.

[0039] The timer exceeds a preset time threshold while the function is in operation.

[0040] The battery SOC is less than or equal to the first SOC threshold;

[0041] The vehicle then enters a function-disabled state.

[0042] Furthermore, if the vehicle is performing an additional action before entering the function exit state, the additional action will be stopped before entering the function exit state.

[0043] Furthermore, if the vehicle enters the function exit state due to any of the following conditions:

[0044] The ambient temperature outside the vehicle is less than or equal to the first ambient temperature threshold.

[0045] The timer exceeds a preset time threshold while the function is in operation.

[0046] The battery SOC is less than or equal to the first SOC threshold;

[0047] Then, further judgment is made if the vehicle also meets the following conditions:

[0048] The vehicle is in a defensive posture;

[0049] The vehicle's low-voltage power supply mode is OFF.

[0050] The vehicle will then proactively send a request to reduce the high voltage to enter the function exit state.

[0051] Meanwhile, this application also proposes a constant-temperature cabin control system for new energy vehicles based on the above method. The system includes an external temperature sensor, a cabin temperature sensor, a power management system, an automotive air conditioning system, a controller, and an in-vehicle large screen. The controller is connected to the external temperature sensor, the cabin temperature sensor, the power management system, the automotive air conditioning system, and the in-vehicle large screen. The external temperature sensor and the cabin temperature sensor are used to collect temperature data from outside the vehicle and inside the cabin, respectively, and send them to the controller. The power management system is used to detect the vehicle's current low-voltage power mode, high-voltage status, and battery SOC and send them to the controller. The controller is used to receive the data sent by the external temperature sensor, the cabin temperature sensor, and the power management system and perform cabin constant-temperature control according to any one of claims 1-8. The in-vehicle large screen is used to provide a human-machine interface for users to monitor the control process.

[0052] The technical advantages of this invention are as follows: This invention provides users with two overheat protection settings: AC mode and no AC mode. Users can choose according to their actual needs to provide the most suitable cabin temperature. This invention can automatically control the maintenance or deactivation of equipment functions in AC mode or no AC mode based on ambient temperature and vehicle status, demonstrating a high degree of intelligence and providing users with the safest and most worry-free cabin experience. Attached Figure Description

[0053] Figure 1 This is a flowchart of the thermostatic cabin control method in AC-free mode according to an embodiment of the present invention;

[0054] Figure 2 This is a flowchart of the constant temperature cabin control method in AC mode according to an embodiment of the present invention. Detailed Implementation

[0055] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. This is to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solutions of the present invention, and to facilitate its implementation. It should be noted that the terms "first," "second," etc., used in this application are only for the convenience of describing the technical solutions and distinguishing different components, and are not intended to limit the scope of this application. To make the technical solutions of the present invention clearer, the present invention will be explained and illustrated through the following embodiments.

[0056] This embodiment provides a method for controlling the temperature-controlled cabin of a new energy vehicle, such as... Figure 1 and Figure 2 As shown, the method includes the following steps:

[0057] Step S1: Within one power-on / off cycle, select and activate the overheat protection setting for the constant temperature cabin and simultaneously provide feedback to the vehicle's large screen. The setting includes AC (air conditioning) mode and no AC mode. In AC mode, the cabin temperature is regulated by the blower and compressor. In no AC mode, the cabin temperature is regulated by the blower. The entire vehicle's low-voltage power supply status changes from non-OFF to OFF and back to non-OFF, which is considered one power-on / off cycle. Within one power-on / off cycle, the selected setting remains unchanged, but the function will not be triggered within this power-on / off cycle and will not affect the judgment and execution in the next power-on / off cycle.

[0058] Step S2: Determine the functional state that the selected setting item will enter based on the ambient temperature and vehicle status. The functional state includes a function maintenance state and a function exit state. In the function maintenance state, the thermal management system of the constant temperature cabin continuously sends network management messages to maintain network wake-up to control the operation of the equipment in AC mode or no AC mode, and starts timing. In the function exit state, the thermal management system no longer maintains network wake-up to control the equipment to stop in AC mode or no AC mode, and restores the circulation damper and mode damper to the power-off default position.

[0059] Different users have different temperature perceptions and preferences. Some users prefer a cooler environment, while others may not tolerate low temperatures well. The option of AC mode and no AC mode allows each user to set the air conditioning according to their own preferences, meeting personalized needs. After the user selects the settings, this embodiment can automatically adjust the function of the settings according to the ambient temperature and vehicle status to achieve constant temperature control in the cabin, improving the user's comfortable driving environment, especially when the vehicle is parked for a long time in summer.

[0060] Specifically, in step S2 of this embodiment, within one power-on / off cycle and before the vehicle enters sleep mode, if the ambient temperature and vehicle status simultaneously meet the following conditions:

[0061] Vehicle defense;

[0062] The vehicle's low-voltage power supply mode is OFF.

[0063] The ambient temperature outside the vehicle is greater than the first outside temperature threshold (in this embodiment, the first outside temperature threshold is set to 15°C. In specific implementation, it can be flexibly adjusted according to the actual situation. The same applies to other types of thresholds, which will not be elaborated on later).

[0064] The battery SOC (remaining battery capacity) is greater than the first SOC threshold (in this embodiment, the first SOC threshold is set to 20%).

[0065] The system then determines that the vehicle has entered a function maintenance state. Normally, when the vehicle is in low-voltage power mode (OFF) and armed, it is in a state where the owner has left, the vehicle is parked, and the safety protection is in place. In this case, if the outside ambient temperature is too high and the battery SOC is sufficient, the system controls the vehicle to enter a function maintenance state, thereby automatically starting constant temperature control in the cabin to provide a comfortable cabin environment for the user's next use of the vehicle.

[0066] Among these features, determining the function maintenance status within a power-on / off cycle and before the vehicle enters sleep mode can reduce power consumption after the vehicle enters sleep mode, allowing the vehicle to maintain a constant temperature for a longer period of time.

[0067] In the function exit state of this embodiment, if the vehicle low-voltage power supply mode is detected to switch from non-OFF to OFF, the process returns to step S1; otherwise, the function exit state is maintained. The switch from non-OFF to OFF of the vehicle low-voltage power supply mode indicates the end of a power-on / off cycle, at which point the user can reselect settings.

[0068] like Figure 1 As shown, in the state where the AC mode is not active, if the vehicle simultaneously meets the following conditions:

[0069] The ambient temperature outside the vehicle is greater than the second outside temperature threshold (in this embodiment, the second outside temperature threshold is set to 30°C);

[0070] The interior temperature is greater than the first interior temperature threshold (in this embodiment, the first interior temperature threshold is set to 50°C);

[0071] In addition to maintaining the normal operating state, the following actions will be performed: the blower will be turned on at its maximum setting; the external air circulation will be activated; and the front air blowing mode will be switched to the face blowing mode, thereby quickly cooling the cabin until the vehicle meets any of the following conditions:

[0072] The ambient temperature outside the vehicle is less than the third outside temperature threshold (in this embodiment, the third outside temperature threshold is set to 20°C);

[0073] The interior temperature is lower than the second interior temperature threshold (in this embodiment, the second interior temperature threshold is set to 40°C);

[0074] Then, it will stop performing additional actions, namely, turning off the blower, restoring the circulation damper and mode damper to their default positions after power-off, and continuing to maintain the function.

[0075] like Figure 2 As shown, in AC mode, if the vehicle simultaneously meets the following conditions:

[0076] The ambient temperature outside the vehicle is greater than the second outside temperature threshold (in this embodiment, the second outside temperature threshold is set to 30°C);

[0077] The interior temperature of the vehicle is greater than the third interior temperature threshold (in this embodiment, the third interior temperature threshold is set to 45°C);

[0078] In the function maintenance state, the following additional actions will be performed: blower at maximum setting; internal circulation will be activated; compressor will be activated for cabin cooling; front air blowing mode will be switched to face blowing mode, until the vehicle meets any of the following conditions:

[0079] The ambient temperature outside the vehicle is less than the third outside temperature threshold (in this embodiment, the third outside temperature threshold is set to 20°C);

[0080] The interior temperature is lower than the fourth interior temperature threshold (in this embodiment, the fourth interior temperature threshold is set to 35°C);

[0081] Then, it will stop performing additional actions, namely, shutting down the blower, stopping the compressor speed request, restoring the circulation damper and mode damper to their default power-down positions, and continuing to maintain the function.

[0082] The temperature thresholds in AC mode are lower than those in non-AC mode. This is because the compressor is involved in cooling in AC mode, resulting in a more significant cooling effect that can meet the lower temperature requirements of the cabin.

[0083] In this embodiment, when the vehicle is in the function maintenance state, if the vehicle meets any of the following conditions:

[0084] Vehicles are deactivated;

[0085] The vehicle's low-voltage power supply mode is in the non-OFF state;

[0086] The ambient temperature outside the vehicle is less than or equal to the first ambient temperature threshold, which is 15°C.

[0087] If the timer exceeds a preset time threshold while the function is in operation, it is set to 12 hours in this embodiment.

[0088] The battery SOC is less than or equal to the first SOC threshold, which is 20%.

[0089] The vehicle then enters the function exit state. Furthermore, if the vehicle was performing an additional action before entering the function exit state, the additional action will cease before entering the function exit state. If the vehicle is disabled or the vehicle's low-voltage power mode is not OFF, it indicates that the user has begun using the vehicle and there is no need to maintain the function maintenance state. If the outside ambient temperature is less than or equal to the first outside temperature threshold, it indicates that the ambient temperature is low enough to prevent overheating inside the cabin. If the timer in the function maintenance state exceeds a preset time threshold, it indicates that the duration of the function maintenance state has been long enough; if it continues, the battery power may not be sufficient for the vehicle to start normally.

[0090] Additionally, the vehicle enters the function-disabled state due to any of the following conditions:

[0091] The ambient temperature outside the vehicle is less than or equal to the first ambient temperature threshold.

[0092] The timer exceeds a preset time threshold while the function is in operation.

[0093] The battery SOC is less than or equal to the first SOC threshold;

[0094] Then, further judgment is made if the vehicle also meets the following conditions:

[0095] The vehicle is in a defensive posture;

[0096] The vehicle's low-voltage power supply mode is OFF.

[0097] The vehicle will then proactively send a high-voltage shutdown request to enter the function exit state. When the vehicle is armed and the low-voltage power mode is OFF, the vehicle should be in a relatively stationary and low-energy consumption state. If the vehicle enters the function exit state due to factors such as outside temperature, excessive timeout, or insufficient battery power, sending a high-voltage shutdown request ensures that the vehicle's high-voltage system is completely shut down, avoiding unnecessary power consumption by the high-voltage system. It also prevents potential risks to the high-voltage system that may occur when the vehicle is stationary for a long time, such as leakage, self-discharge leading to excessive battery wear, etc.

[0098] The normal operation of a climate-controlled cabin relies on a certain power supply, especially a stable power supply under high voltage conditions. In this embodiment, when the vehicle is in the function maintenance state, if the high voltage status of the entire vehicle is detected to change from ON to OFF, a high voltage request is actively sent. If the vehicle is currently performing additional actions after the high voltage status is detected to change from ON to OFF, the additional actions are stopped and a high voltage request is actively sent again. Within a preset time (set to 30 seconds in this embodiment) after the high voltage request is sent, it is determined whether the high voltage status of the entire vehicle has returned to ON. If the high voltage has returned to ON, the function maintenance state is maintained; if the high voltage is still OFF, the function exit state is entered.

[0099] Furthermore, this embodiment also proposes a constant-temperature cabin control system for new energy vehicles based on the above method. The system includes an external temperature sensor, a cabin temperature sensor, a power management system, an automotive air conditioning system, a controller, and an in-vehicle large screen. The controller is connected to the external temperature sensor, cabin temperature sensor, power management system, automotive air conditioning system, and in-vehicle large screen. The external temperature sensor and cabin temperature sensor are used to collect temperature data from outside the vehicle and inside the cabin, respectively, and send them to the controller. The power management system is used to detect the vehicle's current low-voltage power mode, high-voltage status, and battery SOC, and send them to the controller. The controller is used to receive the data sent by the external temperature sensor, cabin temperature sensor, and power management system, and perform cabin constant-temperature control according to the method of this embodiment. The in-vehicle large screen is used to provide a human-machine interface for users to monitor the control process. For example, the currently selected settings and their status can be processed by the controller and sent to the in-vehicle large screen for display.

[0100] This invention provides users with two overheat protection settings: AC mode and no AC mode. Users can choose according to their actual needs to provide the most suitable cabin temperature. This invention can automatically control the device's function to maintain or deactivate in AC mode or no AC mode based on ambient temperature and vehicle status. The entire constant-temperature cabin operation logic can automatically adjust according to different vehicle statuses and environmental conditions within a power-on / off cycle, reducing the need for manual intervention by the user. It boasts a high degree of intelligence and provides users with the safest and most worry-free cabin experience.

[0101] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A method for controlling the constant temperature cabin of a new energy vehicle, characterized in that: The method includes the following steps: Step S1: Within one power-on / off cycle, select and activate the overheat protection setting for the constant temperature cabin and simultaneously send feedback to the vehicle's large screen. The setting includes AC mode and no AC mode. In AC mode, the cabin temperature is regulated by the blower and compressor. In no AC mode, the cabin temperature is regulated by the blower. The entire vehicle's low-voltage power supply status changes from non-OFF to OFF and back to non-OFF, which is considered one power-on / off cycle. Within one power-on / off cycle, the selected setting remains unchanged. Step S2: Determine the functional state that the selected setting item will enter based on the ambient temperature and vehicle status. The functional state includes a function maintenance state and a function exit state. In the function maintenance state, the thermal management system of the constant temperature cabin continuously sends network management messages to maintain network wake-up to control the operation of the equipment in AC mode or no AC mode, and starts timing. In the function exit state, the thermal management system no longer maintains network wake-up to control the equipment to stop in AC mode or no AC mode, and restores the circulation damper and mode damper to the power-off default position. If the vehicle meets the following conditions simultaneously while maintaining the AC mode: The ambient temperature outside the vehicle exceeds the second outside temperature threshold. The interior temperature of the vehicle exceeds the first interior temperature threshold. In the function maintenance state, the following additional actions will be performed: blower is turned on at maximum speed; external air circulation is activated; front air blowing mode is switched to face blowing mode, until the vehicle meets any of the following conditions: The ambient temperature outside the vehicle is lower than the third outside temperature threshold. The interior temperature is lower than the second interior temperature threshold. Then, stop performing any additional actions, namely, turn off the blower, restore the circulation damper and mode damper to their default power-off positions, and continue to maintain the function. While maintaining AC mode functionality, the vehicle must simultaneously meet the following conditions: The ambient temperature outside the vehicle exceeds the second outside temperature threshold. The interior temperature of the vehicle exceeds the third interior temperature threshold. In the function maintenance state, the following additional actions will be performed: blower at maximum setting; internal circulation will be activated; compressor will be activated for cabin cooling; front air blowing mode will be switched to face blowing mode, until the vehicle meets any of the following conditions: The ambient temperature outside the vehicle is lower than the third outside temperature threshold. The interior temperature is below the fourth interior temperature threshold. Then, it will stop performing additional actions, namely, shutting down the blower, stopping the compressor speed request, restoring the circulation damper and mode damper to the default position after power-off, and continuing to maintain the function. In the function maintenance state, if the high voltage status of the vehicle is detected to change from ON to OFF, a high voltage request is actively sent. If the vehicle is currently performing additional actions after the high voltage status of the vehicle is detected to change from ON to OFF, the additional actions are stopped and a high voltage request is actively sent again. Within a preset time after the high voltage request is sent, it is determined whether the high voltage status of the vehicle has returned to ON. If the high voltage has returned to ON, the function maintenance state is maintained. If the high voltage is still OFF, the function exit state is entered. In the function-maintaining state, if the vehicle meets any of the following conditions: Vehicles are deactivated; The vehicle's low-voltage power supply mode is in the non-OFF state; The ambient temperature outside the vehicle is less than or equal to the first ambient temperature threshold. The timer exceeds a preset time threshold while the function is in operation. The battery SOC is less than or equal to the first SOC threshold; The vehicle then enters the function-disabled state; If the vehicle is performing an additional action before entering the function exit state, the additional action will be stopped before entering the function exit state. If the vehicle enters the function-disabled state due to any of the following conditions: The ambient temperature outside the vehicle is less than or equal to the first ambient temperature threshold. The timer exceeds a preset time threshold while the function is in operation. The battery SOC is less than or equal to the first SOC threshold; Then, further judgment is made if the vehicle also meets the following conditions: The vehicle is in a defensive posture; The vehicle's low-voltage power supply mode is OFF. The vehicle will then proactively send a request to reduce the high voltage to enter the function exit state.

2. The constant temperature cabin control method for a new energy vehicle according to claim 1, characterized in that: In step S2, within one power-on / off cycle and before the vehicle enters sleep mode, if the ambient temperature and vehicle status simultaneously meet the following conditions: Vehicle defense; The vehicle's low-voltage power supply mode is OFF. The ambient temperature outside the vehicle exceeds the first outside temperature threshold. The battery's state of charge (SOC) is greater than the first SOC threshold. Then it is determined that the vehicle has entered the function maintenance state.

3. The constant temperature cabin control method for a new energy vehicle according to claim 1, characterized in that: If the vehicle's low-voltage power supply mode is detected to switch from non-OFF to OFF when the function is in the exit state, return to step S1; otherwise, maintain the function exit state.

4. A constant temperature cabin control system for a new energy vehicle according to any one of claims 1-3, characterized in that: The system includes an outside temperature sensor, a cabin temperature sensor, a power management system, an automotive air conditioning system, a controller, and an in-vehicle large screen. The controller is connected to the outside temperature sensor, cabin temperature sensor, power management system, automotive air conditioning system, and in-vehicle large screen. The outside temperature sensor and cabin temperature sensor collect temperature data from outside the vehicle and inside the cabin, respectively, and send this data to the controller. The power management system detects the vehicle's current low-voltage power mode, high-voltage status, and battery SOC, and sends this information to the controller. The controller receives data from the outside temperature sensor, cabin temperature sensor, and power management system and performs cabin temperature control according to any one of claims 1-3. The in-vehicle large screen provides a human-machine interface for monitoring the control process.

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