Thermostatic cabin control method, device, controller and vehicle of hybrid vehicle

Abstract

This application provides a method, device, controller, and vehicle for controlling the temperature-controlled cabin of a hybrid vehicle, relating to the field of automotive thermal management control technology. The method includes activating the vehicle communication network when the outside temperature exceeds a preset outside temperature threshold; generating a high-voltage power-on request when the inside temperature exceeds a trigger threshold corresponding to a preset temperature control strategy; and sending the high-voltage power-on request to the air conditioning system via the vehicle communication network to control the air conditioning system to execute the preset temperature control strategy. This application achieves efficient, energy-saving, and on-demand temperature control in hybrid vehicle parking scenarios, improving user comfort and overall vehicle energy economy.

Description

Technical Field

[0001] This application relates to the field of automotive thermal management control technology, and in particular to a method, device, controller, and vehicle for controlling a temperature-controlled cabin in a hybrid vehicle. Background Technology

[0002] With the increasing frequency of high temperatures in summer, users often face the problem of excessively high cabin temperatures when returning to their vehicles after brief periods away (such as shopping or dining). For example, after a user turns off the engine, locks the car, and leaves, the vehicle is left alone in a parking lot exposed to the summer sun. Since the vehicle itself does not have a cooling capacity, the cabin temperature rises rapidly. Pure electric vehicles can maintain the interior temperature while parked through a climate-controlled cabin function. However, hybrid vehicles, limited by their smaller battery capacity and the energy consumption pressure from frequent start-stop cycles of the high-voltage system, currently lack effective parking temperature control strategies. Simply adopting the pure electric solution could easily lead to excessive battery depletion in hybrid vehicles, potentially causing risks such as starting failure or high-voltage system power failure. Summary of the Invention

[0003] The purpose of this application is to provide a method, device, controller, and vehicle for controlling the temperature-controlled cabin of a hybrid vehicle, so as to alleviate the aforementioned technical problems existing in the prior art.

[0004] In a first aspect, the present invention provides a method for controlling the temperature-controlled cabin of a hybrid vehicle, comprising: When the outside temperature exceeds a preset outside temperature threshold, the vehicle communication network is activated. If the interior temperature is higher than the activation threshold corresponding to the preset temperature control strategy, a high-voltage power-on request is generated; wherein, the preset temperature control strategy includes: after the vehicle is armed, the interior temperature, exterior temperature, timestamp and the vehicle's location are uploaded to the cloud, and the cloud generates the data based on the weather information of the vehicle's location within a preset time period and the historical distribution of the vehicle's current off-vehicle time. The high-voltage power-on request is sent to the air conditioning system via the vehicle communication network, controlling the air conditioning system to execute the preset temperature control strategy.

[0005] In an optional implementation, before waking up the vehicular communication network, the following is also included: When the vehicle is armed and the power is off, a timer starts and continuously monitors the interior and exterior temperatures.

[0006] In an optional implementation, it further includes: Control the communication bus to maintain a wake-up state; When the timing duration exceeds the preset monitoring cycle, the control communication bus enters sleep mode and stops temperature monitoring.

[0007] In an optional implementation, the preset temperature control strategy further includes a working mode determined according to the user's setting instructions, including an air-conditioning mode and a no-air-conditioning mode; controlling the air conditioning system to execute the preset temperature control strategy includes: When the preset temperature control strategy is set to air conditioning mode, the compressor and blower are turned on, and the air conditioner is put into recirculation mode. When the preset temperature control strategy is the no-air conditioning mode, the blower is controlled to run at the preset speed, and the air conditioner is controlled to enter the external circulation mode.

[0008] In an optional implementation, before controlling the start-up of the compressor and blower, the following is also included: Determine whether the vehicle's power battery charge is higher than the preset cooling energy consumption threshold; If the power battery charge is lower than the cooling energy consumption threshold, then the no-air conditioning mode will be executed.

[0009] In an optional implementation, before generating the high-voltage power-on request, the following is also included: Acquire the vehicle's power battery charge signal and high-voltage system fault signal; When the power battery charge is higher than the preset charge threshold and the high-voltage system fault signal indicates no fault, a high-voltage power-on request is allowed to be generated. When the power battery charge is lower than or equal to the preset charge threshold, or when the high-voltage system signal indicates a fault, the constant temperature cabin control will be terminated.

[0010] In an optional implementation, generating a high-voltage power-on request includes: Control the pre-charge relay to close in order to perform pre-charging; Once the pre-charging is complete, a high-voltage power-on request is generated to control the closing of the high-voltage positive relay and the high-voltage negative relay.

[0011] In an optional implementation, it further includes: When the interior temperature drops to the stop threshold corresponding to the preset temperature control strategy, a high-voltage power-down request is generated. The high-voltage power-down request is sent to the air conditioning system via the vehicle communication network, controlling the air conditioning system to stop operating.

[0012] In an optional implementation, controlling the air conditioning system to stop operating includes at least one of the following triggering conditions: When the timer reaches the preset maximum running time, the air conditioning system will stop running and the high voltage will be cut off. When the vehicle's power battery charge is lower than a preset charge threshold, the air conditioning system will stop operating and the high voltage will be cut off. When the outside temperature is lower than the preset outside temperature exit threshold, the air conditioning system will stop operating and the high voltage will be cut off. When the vehicle is dearmed, the air conditioning system is shut down and a high-voltage power-off is initiated.

[0013] In an optional implementation, it further includes: When the vehicle's small battery charge is lower than the first preset charge threshold and the power battery charge is higher than the second preset charge threshold, the power battery is controlled to replenish the small battery. When the power battery charge is lower than the third preset charge threshold, the engine is started to charge the power battery. During the power replenishment process, the thermostatic cabin control function is kept running normally.

[0014] In an optional implementation, it further includes: Real-time monitoring of the operating status parameters of the air conditioning system; If the operating status parameters exceed the preset safety range, a high-voltage power-off request is generated and sent to the air conditioning system through the vehicle communication network to control the air conditioning system to stop operating.

[0015] Secondly, the present invention provides a climate-controlled cabin control device for a hybrid vehicle, comprising: The network wake-up module is used to wake up the vehicle communication network when the outside temperature is higher than a preset outside temperature threshold. The interior temperature monitoring module generates a high-voltage power-on request when the interior temperature exceeds the activation threshold corresponding to the preset temperature control strategy. The temperature control module is used to send a high-voltage power-on request to the air conditioning system through the vehicle communication network, and control the air conditioning system to execute a preset temperature control strategy.

[0016] Thirdly, the present invention provides a controller including a processor and a memory, the memory storing computer-executable instructions executable by the processor, the processor executing the computer-executable instructions to implement the method of any of the foregoing embodiments.

[0017] Fourthly, the present invention provides a vehicle including the controller of the foregoing embodiments.

[0018] Fifthly, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when invoked and executed by a processor, cause the processor to implement the method of any of the foregoing embodiments.

[0019] The hybrid vehicle constant temperature cabin control method, device, controller, and vehicle provided in this application determine whether to activate the vehicle communication network by detecting whether the outside temperature exceeds a preset outside temperature threshold, avoiding network activation in low-temperature or unnecessary scenarios and effectively reducing the vehicle's static energy consumption. Only when the interior temperature exceeds the activation threshold corresponding to the preset temperature control strategy is a high-voltage power-on request generated and sent to the air conditioning system via the network to execute the corresponding strategy. This ensures that the air conditioning activation timing precisely matches the actual cooling demand, avoiding excessive battery consumption caused by blind power-on. This method combines outside temperature prediction with inside temperature triggering, significantly reducing the burden on the small-capacity power battery of the hybrid vehicle while ensuring cabin high-temperature protection, resolving the contradiction between parking cooling and energy consumption control. Overall, this application achieves efficient, energy-saving, and on-demand constant temperature control in hybrid vehicle parking scenarios, improving user comfort and overall vehicle energy economy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A flowchart illustrating a method for controlling the temperature-controlled cabin of a hybrid vehicle, provided as an embodiment of this application; Figure 2 A flowchart illustrating a specific method for controlling the temperature-controlled cabin of a hybrid vehicle, as provided in this application embodiment; Figure 3 A structural diagram of a climate-controlled cabin control device for a hybrid vehicle provided in this application embodiment; Figure 4 This is a structural diagram of a controller provided in an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] This application provides a method for controlling the temperature-controlled cabin of a hybrid vehicle, see [link to relevant documentation]. Figure 1 As shown, the method mainly includes the following steps: S110: When the outside temperature is higher than the preset outside temperature threshold, the vehicle communication network is activated.

[0026] When the vehicle is armed and powered off, the vehicle's communication network is typically in a dormant state to reduce static power consumption. However, some controllers maintain a low-power monitoring mode, periodically reading signals from the external temperature sensor. When the external temperature exceeds a pre-defined threshold (e.g., 30°C), it indicates that the ambient temperature is sufficiently hot, necessitating the activation of the climate-controlled cabin. At this point, the gateway proactively sends a network management message to wake the vehicle's communication network from dormancy, enabling nodes such as the air conditioning controller, vehicle controller, and battery management system to enter normal operating mode. The significance of this step is to: keep the network dormant in cool weather to avoid unnecessary power consumption; and only activate communication when truly needed, thereby extending the standby time of the small battery.

[0027] S120: If the interior temperature is higher than the start-up threshold corresponding to the preset temperature control strategy, a high-voltage power-on request is generated.

[0028] After being woken up by the network, the controller continues to read the values ​​from the in-vehicle temperature sensor. The preset temperature control strategy includes: after the vehicle is armed, uploading the in-vehicle temperature, outside temperature, timestamp, and vehicle location to the cloud. The cloud generates a value based on the weather information for the vehicle's location within a preset time period and the historical distribution of the vehicle's current off-vehicle time. Optionally, users can pre-set the constant temperature mode on the central control screen, including two operating modes: "with air conditioning" and "without air conditioning." Each mode corresponds to a different start-up temperature threshold. For example, when selecting the "with air conditioning" mode, the start-up threshold is an interior temperature above 35°C; when selecting the "without air conditioning" mode, the start-up threshold is 40°C. When the actual interior temperature exceeds the corresponding threshold, and the prerequisites such as sufficient battery charge and no faults in the high-voltage system are met, the gateway will generate a high-voltage power-on request signal. This signal is a CAN message with the content "Request high-voltage power-on," and the target receiver is the vehicle controller. Before generating the request, the gateway will also check whether the timer has not exceeded 12 hours and whether the vehicle is still in an armed state, ensuring that the entire function does not operate indefinitely.

[0029] S130 sends a high-voltage power-on request to the air conditioning system via the vehicle communication network, and controls the air conditioning system to execute a preset temperature control strategy.

[0030] After receiving a high-voltage power-on request, the vehicle controller executes the standard high-voltage power-on procedure: first, it closes the pre-charge relay; after the bus voltage stabilizes, it closes the main positive and main negative relays; then, it sends a high-voltage ready status feedback to the gateway. Upon receiving the ready signal, the gateway sends specific execution instructions to the air conditioning controller based on the user-preset temperature control strategy. If the user selects the "Air Conditioning On" mode, the instructions include: starting the compressor, operating the blower at maximum speed, switching the damper to internal circulation, setting the airflow mode to face blowing, and setting the temperature to the coldest setting. If the user selects the "No Air Conditioning" mode, only the blower is turned on at maximum speed and switched to external circulation; the compressor does not operate. After parsing the instructions, the air conditioning controller drives the corresponding actuators to achieve vehicle interior cooling or ventilation.

[0031] The hybrid vehicle constant temperature cabin control method provided in this application wakes up the network by predicting the outside temperature, and then decides whether to apply high voltage and start the air conditioning based on the inside temperature and the user's selected mode, thus achieving on-demand and tiered parking temperature control. This method effectively solves the problem of high temperature inside the vehicle when returning after a short stop in summer. At the same time, through strict power thresholds and fault diagnosis, it avoids the small-capacity battery of hybrid vehicles from running out of power, thereby improving the user experience and the overall vehicle intelligence level.

[0032] For ease of understanding, the method provided in this application will be described in detail below.

[0033] This embodiment includes a pre-preparation phase before determining whether the outside temperature exceeds a preset outside temperature threshold. When the user parks, turns off the engine, locks the vehicle, and leaves, the vehicle enters an armed state. At this time, the power is off (key power position OFF), and the Climate Control Module (CLM) begins timing and enters a low-power local monitoring mode. In this mode, the CLM does not wake up the vehicle network but relies on its internal timer and analog-to-digital converter to read the values ​​from the in-vehicle and outside temperature sensors at regular intervals. This design keeps standby current extremely low, suitable for the relatively small 12V batteries in hybrid vehicles. Simultaneously, the CLM maintains a timer with a preset monitoring cycle (e.g., maximum operating time), accumulating from the moment it is armed. As long as the timer does not expire, the CLM continuously monitors the temperature; once the timer exceeds the preset monitoring cycle, the CLM completely releases the network, stops all temperature monitoring, and enters deep sleep mode to prevent the small battery from being depleted due to prolonged standby. In addition, if the user disarms the vehicle via the remote key during this period (i.e., dearms), the CLM will immediately terminate the climate control cabin monitoring, as the user is about to enter the vehicle and automatic cooling is no longer needed.

[0034] In one implementation, the aforementioned preset temperature control strategy includes different operating modes, including an air-conditioned mode, an air-conditioned mode, and a module shutdown mode (where the shutdown mode means no constant temperature cabin control is performed). This is manually selected by the user on the central control screen. When the user selects "air-conditioned mode," the gateway CLM remembers this setting, and the compressor and blower are turned on when the function is triggered subsequently; when "air-conditioned mode" is selected, only the blower is turned on; when "off" is selected, the entire constant temperature cabin function is not activated.

[0035] In actual operation, even if the user selects "Air Conditioning Mode," the system adds an extra charge check: it checks whether the current battery charge is higher than a preset cooling energy consumption threshold. If the charge is sufficient, it operates in Air Conditioning Mode; if the charge is below the threshold, to prevent over-discharge of the battery and affecting the next start, the system automatically downgrades to "No Air Conditioning Mode," only turning on the blower and external air circulation. This adaptive downgrade strategy is very practical because the battery capacity of hybrid vehicles is relatively limited. If the remaining charge is low, forcibly starting the compressor will quickly deplete the charge, and may even prevent the vehicle from starting the engine.

[0036] Through this soft downgrade, although the cooling effect is slightly less, users can at least enjoy ventilation, and the vehicle can retain its starting battery power. When the "no air conditioning mode" is selected directly, the system no longer checks the battery level, because the blower's power consumption is much lower than the compressor's, and generally does not pose a threat to the battery.

[0037] Before generating a high-voltage power-on request, a series of safety conditions must be met. Specifically, when deciding whether to send a power-on request, the CLM must obtain the battery power signal and the high-voltage system fault signal via the CAN bus. The CLM will only allow the generation of a power-on request when the battery power is higher than a preset threshold and the high-voltage fault signal indicates no fault (e.g., no insulation fault, no relay sticking fault, etc.). If the battery power is lower than the threshold, or if any high-voltage fault exists, the CLM will immediately terminate the current temperature control and push the reason for the failure to the cloud or mobile app. At the same time, the CLM's local monitoring will also end, and it will not attempt to re-enter the system again during this protection cycle.

[0038] When the conditions are met, the CLM sends a power-on request. Upon receiving the request, the vehicle controller executes the standard high-voltage power-on procedure: first, it controls the pre-charge relay to close, allowing the high-voltage bus to slowly charge through the pre-charge resistor, preventing damage to the capacitors and relays from a sudden surge of current; once the bus voltage rises to most of the battery voltage (pre-charging complete), the vehicle controller then controls the high-voltage positive and negative relays to close and disconnects the pre-charge relay; finally, it sends a high-voltage ready status feedback to the CLM. The CLM only begins sending air conditioning control commands after receiving the ready signal. If the CLM does not receive ready feedback after the preset response time following the power-on request, it considers the high-voltage power-on to have failed and terminates the function.

[0039] To avoid vehicle energy depletion and potential safety issues, the climate-controlled cabin cannot operate indefinitely. This embodiment provides several exit conditions, including a basic exit condition (i.e., temperature reaching the target): when the interior temperature drops to the stop threshold corresponding to the preset temperature control strategy, the CLM generates a high-voltage power-down request and sends it to the air conditioning controller via the network to stop the compressor and blower. Then, it sends a high-voltage power-down request to the vehicle controller. After the air conditioning stops, the CLM does not terminate the entire function but continues to monitor the temperature locally, as the temperature may rise again. If the temperature exceeds the start-up threshold again, and the timer has not expired and the battery is sufficiently charged, the system will re-enter the system.

[0040] Besides meeting the temperature requirement, there are several other situations where forced exit may occur: One is that if the timer exceeds the preset maximum running time, regardless of the temperature, it is assumed that the user no longer needs it. At this time, the CLM turns off the air conditioner, reduces the high pressure, releases the network, and ends the monitoring. Secondly, if the power battery charge is lower than the preset charge threshold, it indicates that the power is already tight, and the air conditioner must be stopped immediately to preserve the starting power. Thirdly, if the outside temperature is lower than the preset outside temperature exit threshold, it means that the environment is already cool and there is no need to cool it down further. Fourthly, when the vehicle is dearmed and the user returns, the air conditioning should be turned off immediately, as the user may start the vehicle soon, and the temperature control task will be completed.

[0041] When any of the above conditions are met, the system will exit and will not retain the network after exiting unless the trigger condition is met again (but it will not re-enter after the timer exceeds the maximum cycle or the battery is below the threshold).

[0042] Considering that the 12V small battery in hybrid vehicles is prone to depletion, especially during prolonged use of electrical equipment while the vehicle is parked, this method integrates an intelligent charging strategy. In practical implementation, the intelligent charging strategy may include: First, when the small battery's charge level is below a first preset charge threshold and the power battery's charge level is above a second preset charge threshold, the CLM requests high voltage from the vehicle controller. Then, a DC-DC converter converts the high voltage from the power battery to low voltage to charge the small battery. The charging process continues until the small battery's charge level reaches the recovery threshold or the charging time reaches the preset duration. A maximum of a limited number of charging attempts are allowed within one engine shutdown cycle to avoid excessive discharge of the power battery due to frequent charging.

[0043] Secondly, when the battery charge itself falls below a third preset threshold, the vehicle will automatically start the engine to charge the battery via the generator, stopping once the target charge level is reached or the preset charging time is completed. During this charging process, the climate-controlled cabin function remains operational and will not be interrupted. If a malfunction occurs during the charging process (e.g., DC-DC converter failure, engine starting failure), the climate-controlled cabin function will be deactivated. This charging mechanism ensures both the continuous operation of the climate-controlled cabin and the normal starting of the vehicle.

[0044] Furthermore, to ensure safety, the CLM (Clean Air Module) needs to monitor the operating status parameters of the air conditioning system in real time during operation, including compressor current, refrigerant pressure, blower speed, and evaporator temperature. These parameters are obtained from the air conditioning controller or direct sensors via the CAN bus. If any parameter exceeds the preset safety range, the CLM will determine it as an abnormal condition, immediately generate a high-voltage power-down request, forcibly stop the air conditioning operation, and report a fault code via the network.

[0045] This safety mechanism prevents equipment damage, overheating, and even fires caused by abnormal loads. Additionally, the CLM records the incident after an abnormal shutdown and restricts restarts for a short period to prevent repeated attempts from exacerbating the problem.

[0046] Figure 2 A specific method for controlling a constant temperature cabin is shown. This method uses the Climate Control Module (CLM) as the main execution unit, in conjunction with the IHU (In-vehicle Entrance System), HCU / VCU (Vehicle Controller), air conditioning system, and various sensors.

[0047] 1. User presets When the vehicle's power status is ACC or ON, the user can set the climate control cabin function via the IHU. The settings include three modes: AC on, AC off, and off. The IHU sends the user-selected status signal (IHU_12_SetCbnAntiOverHeat) to the CLM, which remembers the setting and displays the current status (CLM_6_CbnAntiOverHeatSts) on the IHU display.

[0048] If the user selects the off mode, subsequent functions will not be activated.

[0049] 2. Functional monitoring After the vehicle is turned off and armed (power status BCM_4_KeySts is OFF), the CLM starts timing. At this time, the CLM continuously acquires temperature signals through the in-vehicle temperature sensor and the outside temperature sensor, but does not wake up the communication bus, only maintaining local low-power monitoring.

[0050] The prerequisites for enabling this feature are: CLM timing does not exceed 12 hours, and the user's preset mode is either with AC or without AC.

[0051] 3. Function Entry Condition Judgment The CLM determines that the climate-controlled cabin function needs to be activated when all of the following conditions are met simultaneously: The outside temperature is above 30°C; The user selects AC mode and the interior temperature is above 35℃, or the user selects no AC mode and the interior temperature is above 40℃. The SOC of the power battery is higher than 20%; The high-voltage system is fault-free.

[0052] 4. Wake-up from the network and high-voltage power-on After the above conditions are met, the CLM first wakes up the vehicle communication network, making the CAN bus and other communication links active. Then, the CLM sends a high-voltage power-on request to the HCU / VCU (CLM_6_HeatHVReq = 0x1). Upon receiving the request, the HCU / VCU executes the high-voltage power-on procedure, closes the high-voltage positive relay and the high-voltage negative relay, establishes the high-voltage circuit, and feeds back the high-voltage completion status (VCU_HVReady or HCU_HVReady).

[0053] If no high-voltage completion feedback is received within 30 seconds after sending the power-on request, the CLM determines that the high-voltage connection has failed, terminates the constant temperature cabin function, and will not trigger it again during the current arming cycle.

[0054] 5. Air conditioning system operation After the high-voltage power is applied, the CLM controls the air conditioning system according to the preset mode: If there is an AC mode, the CLM will start the compressor, turn the blower to the maximum speed, set the air conditioner circulation mode to internal circulation, the air outlet mode to face blowing, and the temperature to full cooling.

[0055] If it is in no AC mode, the CLM will not start the compressor, but will only turn on the blower to the maximum speed and set the air conditioner circulation mode to external circulation.

[0056] During air conditioning operation, the CLM continuously monitors the interior temperature. If the user manually adjusts the fan speed, temperature, or mode via the IHU or air conditioning panel, the CLM remembers the adjustment and executes it in subsequent operations.

[0057] 6. Function Exit Conditions The climate-controlled cabin function will deactivate if any of the following conditions are met: Temperature control meets the standard: the interior temperature is below 35℃ in AC mode, or below 40℃ in non-AC mode; Timeout: CLM timer exceeds 12 hours; Low battery level: The power battery's SOC has dropped to 20% or below; Disarming: The vehicle is disarmed (BCM_4_ArmingSts status changes to disarming successful); Low outside temperature: The outside temperature is below 20°C; High-voltage fault: A fault has occurred in the high-voltage system.

[0058] 7. Function Exit Execution Upon exiting, the CLM first shuts down the air conditioning system (stopping the compressor and blower), then sends a high-voltage power-down request to the HCU / VCU (CLM_6_HeatHVReq = 0x2). The HCU / VCU performs the high-voltage power-down, disconnecting the high-voltage circuit. Subsequently, the CLM terminates the timing, releases the network, and puts the communication bus into sleep mode.

[0059] If the vehicle exits due to temperature control meeting the threshold but the timer has not reached 12 hours, the CLM will continue to monitor the local temperature (without waking up the network). When the interior temperature exceeds the startup threshold again, the above entry, power-on, and operation process will be re-executed.

[0060] 8. Intelligent power replenishment During the operation of the climate-controlled cabin function, if the 12V sub-battery's charge level is below 70% and the main battery's charge level is above 25%, the CLM controls the main battery to replenish the sub-battery's charge. Each replenishment will stop when the sub-battery's charge level reaches 90% or the replenishment time reaches 1 hour. A maximum of three replenishments can be made within one engine shutdown cycle.

[0061] If the battery charge drops below 20%, the CLM controls the engine to start and charge the battery. The engine will stop charging once the battery charge reaches 50% or after one hour of charging. During the charging process, the climate control cabin function remains operational; if the charging fails, the climate control cabin function will deactivate.

[0062] Building upon the basic implementation method, this application further considers the significant differences in driving habits and parking durations among different users, making it impossible for a fixed temperature threshold to meet personalized needs. Therefore, this solution introduces cloud learning and edge collaboration to achieve adaptive adjustment of the temperature control strategy.

[0063] Specifically, after the vehicle is armed, the T-Box uploads the current interior temperature, exterior temperature, timestamp, and vehicle location (such as GPS location) to the cloud. The cloud obtains two types of data: first, weather information (temperature, probability of rainfall, and radiation intensity) for the vehicle's location within a preset timeframe; and second, the historical distribution of time the vehicle has been away from the car (through long-term learning of the owner's parking habits at different times). Based on this data, the cloud generates a personalized temperature control strategy and sends it to the vehicle.

[0064] If it is predicted that the car owner will return in a short period of time (e.g., within one hour), the strategy is set to "rapid pre-cooling": the network is woken up when the outside temperature is above a lower outside temperature threshold, and the high voltage is applied and the air conditioning is turned on when the interior temperature is above a lower start-up threshold, before the temperature is lowered to a comfortable cooling target value and then the system goes into sleep mode. If it is predicted that the car owner will be away from the car for a longer period of time (e.g., more than several hours), the strategy is set to "anti-aging maintenance": the network is only woken up when the outside temperature is above a higher outside temperature threshold and the interior temperature is above a higher start-up threshold, and only the fan ventilation is run (without applying high voltage), before the temperature is lowered to an upper limit value that will not cause aging and then the system goes into sleep mode. If a sudden drop in temperature due to rain is detected in the near future, the strategy is set to "silent waiting": no wake-up is triggered at all.

[0065] After receiving the policy, the vehicle stores it in local non-volatile memory and executes it independently according to the policy (it remains available even after network outages). After each execution, the T-Box sends back the actual temperature drop curve and power consumption for retraining the cloud model. Through this cloud-edge collaboration, the CLM can dynamically adjust the trigger threshold and execution intensity according to different scenarios, avoiding the problems of overly conservative or aggressive fixed thresholds, and significantly reducing the amount of vehicle data uploaded and the cloud load.

[0066] Furthermore, based on the judgment of a single temperature sensor, this solution introduces microclimate data and group behavior learning to dynamically correct the external temperature threshold, enabling the system to perceive factors such as local heat island effect, parking lot material, and surrounding vehicle status.

[0067] After the vehicle is armed, the T-Box activates its low-power mode and sends its current location and timestamp to the cloud. The cloud returns three sets of data: The first group consists of microclimate correction factors, which calculate the equivalent perceived temperature deviation based on real-time air temperature, surface temperature, shortwave radiation, and wind speed within a certain grid precision at the vehicle's location. For example, in a hard-paved parking lot under windless and strong radiation conditions, the correction factor is positive. The microclimate correction factor is calculated by the cloud based on grid meteorological data (air temperature, surface temperature, radiation, and wind speed) at the vehicle's current location. For example, in a concrete parking lot under direct sunlight, with strong radiation and low wind speed, the correction factor can reach +3.5℃; conversely, it is negative under the shade of trees or in windy conditions. This factor is obtained through a meteorological API and generally ranges from -5℃ to +5℃.

[0068] The second group is the activity level of air conditioning in surrounding vehicles. This counts the percentage of vehicles within a certain radius that have been in a protected state and have their air conditioning turned on recently. The activity level can be calculated by taking the vehicle as the center, within a 500-meter radius, and within the last 30 minutes, as the percentage of vehicles that have been in a protected state and have their air conditioning turned on. This data is collected from cloud-based statistics and reports, and the value ranges from 0 to 1.

[0069] The third group is the dynamic external temperature threshold, calculated as follows: Dynamic External Temperature Threshold = Base Fixed Threshold - First Coefficient × Microclimate Correction Factor - Second Coefficient × Activity Level. The base fixed threshold is the factory-calibrated baseline external temperature wake-up value, typically set to 35℃. This value is determined based on human comfort requirements and heat resistance tests of interior materials, and may vary slightly between different vehicle models. The first coefficient adjusts the weight of the microclimate correction factor's influence on the threshold, with a typical value of 0.5 and a range of 0.3~0.8. This coefficient can be calibrated by observing the wake-up effect of the vehicle under different environmental conditions. The second coefficient adjusts the weight of the activity level's influence on the threshold, measured in degrees Celsius, with a typical value of 3℃ and a range of 1℃~5℃. Calibration is achieved by analyzing the matching degree between the actual heat load and the threshold under different activity levels.

[0070] The vehicle continuously monitors the outside temperature sensor in low-power mode. Only when the measured temperature exceeds the dynamic outside temperature threshold issued by the cloud is the communication network activated for further judgment. After each air conditioning operation, the vehicle uploads the actual wake-up time, outside temperature, interior temperature drop curve, and power consumption to the cloud. Based on extensive vehicle data, the cloud periodically refits the coefficients in the dynamic outside temperature threshold calculation formula and updates it to each vehicle. If multiple vehicles in a certain area trigger their air conditioning but no living beings are detected, the cloud can proactively lower the dynamic outside temperature threshold for that area to avoid over-protection. This solution deeply integrates local sensor data with cloud-based microclimate and group behavior data, significantly improving the accuracy and environmental adaptability of the CLM wake-up decision.

[0071] Some vehicle anti-theft systems detect sudden changes in low-voltage network current or high-voltage relay activation signals. If high voltage is applied while the vehicle is armed, it may be mistakenly interpreted as "illegal vehicle start-up," triggering the horn and lights. If there are children or pets inside the vehicle, the sudden alarms could startle or even cause panic. Furthermore, the noise from the air conditioner's blower and compressor vibrations could mislead passersby into believing the vehicle is stolen, leading to unnecessary disputes. Therefore, this solution incorporates a life detection and time-sharing wake-up mechanism into the climate-controlled cabin.

[0072] When a living being is detected while the vehicle is armed and the interior temperature is high, a "forced emergency cooling + alarm" strategy is employed. When sensors (such as in-vehicle radar, seat pressure sensors, or carbon dioxide sensors) detect a child or pet, and the interior temperature exceeds a preset danger threshold, the system enters "emergency protection mode." At this time, the CLM immediately generates a high-voltage power-on request, driving the air conditioning to operate at maximum cooling power, and simultaneously sends an emergency notification to the vehicle owner. To avoid false alarms, the CLM proactively sends a whitelist flag to the anti-theft ECU: "Currently in emergency life protection mode; siren and hazard lights are prohibited."

[0073] If regulations require an alarm to be triggered, or if the vehicle owner is detected as not returning for an extended period, a silent alarm will be activated (only information will be uploaded to the rescue platform, without generating any audio or visual interference). The air conditioning will continue to run, and the CLM will periodically re-check vital signs; when the interior temperature drops to a safe range and vital signs are normal, the fan speed can be reduced to maintain it; if the temperature continues to rise, it will remain at full capacity until the doors are unlocked.

[0074] When no living beings are detected in the armed state and the vehicle interior is hot, a time-sharing wake-up cooling strategy is employed. At this time, there is no need to worry about the safety of living beings; the focus is on energy conservation. The system wakes up the CAN network at dynamic intervals: the first wake-up is executed immediately after the outside temperature exceeds a threshold, cooling to a comfortable lower limit before hibernation; thereafter, the wake-up interval increases exponentially, but does not exceed a maximum interval. If the interior temperature still exceeds the threshold after each wake-up, the CLM requests the high-pressure air conditioning to run for a short period before hibernation. If, after a wake-up, the outside temperature is found to be below the threshold, the interval counter is reset, returning to the initial state. Compared to fixed-period wake-up, this time-sharing wake-up strategy significantly reduces the number of high-pressure power-ups and air conditioning operation time, minimizing energy consumption while ensuring anti-aging.

[0075] In summary, the hybrid vehicle constant temperature cabin control method provided in this application achieves on-demand temperature control in parked conditions by triggering the network based on external temperature prediction and linking the internal temperature with the user-preset mode to activate high-voltage power. This avoids unnecessary wake-ups and energy waste. Combined with arming timing, power and fault safety verification, and a multi-condition intelligent exit mechanism, it effectively prevents cabin overheating while ensuring vehicle startup safety. Furthermore, through cloud-edge collaborative adaptive strategies, dynamic threshold correction based on microclimate and group behavior, emergency cooling based on vital sign detection, and low-pressure cold storage to prevent conflicts, it significantly improves temperature control accuracy, environmental adaptability, and user comfort. Simultaneously, it reduces the risk of battery depletion in hybrid vehicles, extends interior lifespan, and comprehensively optimizes the overall vehicle thermal management efficiency in parked scenarios.

[0076] Based on the above method embodiments, this application also provides a climate-controlled cabin control device for hybrid vehicles, see [link to relevant documentation]. Figure 3 As shown, the device mainly includes the following parts: The network wake-up module 310 is used to wake up the vehicle communication network when the outside temperature is higher than a preset outside temperature threshold. The interior temperature monitoring module 320 is used to generate a high-voltage power-on request when the interior temperature is higher than the activation threshold corresponding to the preset temperature control strategy. The temperature control module 330 is used to send a high-voltage power-on request to the air conditioning system through the vehicle communication network and control the air conditioning system to execute a preset temperature control strategy.

[0077] In one feasible implementation, a temperature monitoring module is also included before waking up the vehicle communication network, for: When the vehicle is armed and the power is off, a timer starts and continuously monitors the interior and exterior temperatures.

[0078] In one feasible implementation, a hibernation control module is also included, for: Control the communication bus to maintain a wake-up state; When the timing duration exceeds the preset monitoring cycle, the control communication bus enters sleep mode and stops temperature monitoring.

[0079] In one feasible implementation, the preset temperature control strategy includes a working mode determined according to the user's setting instructions, the working mode including an air-conditioning mode and a no-air-conditioning mode; the aforementioned temperature control module 330 is specifically used for: When the preset temperature control strategy is set to air conditioning mode, the compressor and blower are turned on, and the air conditioner is put into recirculation mode. When the preset temperature control strategy is the no-air conditioning mode, the blower is controlled to run at the preset speed, and the air conditioner is controlled to enter the external circulation mode.

[0080] In one feasible implementation, before controlling the start-up of the compressor and blower, the temperature control module 330 is further configured to: Determine whether the vehicle's power battery charge is higher than the preset cooling energy consumption threshold; If the power battery charge is lower than the cooling energy consumption threshold, then the no-air conditioning mode will be executed.

[0081] In one feasible implementation, before generating the high-voltage power-on request, the system further includes: a power level and fault determination module, used for: Acquire the vehicle's power battery charge signal and high-voltage system fault signal; When the power battery charge is higher than the preset charge threshold and the high-voltage system fault signal indicates no fault, a high-voltage power-on request is allowed to be generated. When the power battery charge is lower than or equal to the preset charge threshold, or when the high-voltage system signal indicates a fault, the constant temperature cabin control will be terminated.

[0082] In one feasible implementation, the internal temperature monitoring module 320 is further used for: Control the pre-charge relay to close in order to perform pre-charging; Once the pre-charging is complete, a high-voltage power-on request is generated to control the closing of the high-voltage positive relay and the high-voltage negative relay.

[0083] In one feasible implementation, it further includes: a temperature control stop module, used for: When the interior temperature drops to the stop threshold corresponding to the preset temperature control strategy, a high-voltage power-down request is generated. The high-voltage power-down request is sent to the air conditioning system via the vehicle communication network, controlling the air conditioning system to stop operating.

[0084] In one feasible implementation, the temperature control stop module is further used for: When the timer reaches the preset maximum running time, the air conditioning system will stop running and the high voltage will be cut off. When the vehicle's power battery charge is lower than a preset charge threshold, the air conditioning system will stop operating and the high voltage will be cut off. When the outside temperature is lower than the preset outside temperature exit threshold, the air conditioning system will stop operating and the high voltage will be cut off. When the vehicle is dearmed, the air conditioning system is shut down and a high-voltage power-off is initiated.

[0085] In one feasible implementation, it further includes: a power replenishment module, used for: When the vehicle's small battery charge is lower than the first preset charge threshold and the power battery charge is higher than the second preset charge threshold, the power battery is controlled to replenish the small battery. When the power battery charge is lower than the third preset charge threshold, the engine is started to charge the power battery. During the power replenishment process, the thermostatic cabin control function is kept running normally.

[0086] In one feasible implementation, it further includes: a security monitoring module, used for: Real-time monitoring of the operating status parameters of the air conditioning system; If the operating status parameters exceed the preset safety range, a high-voltage power-off request is generated and sent to the air conditioning system through the vehicle communication network to control the air conditioning system to stop operating.

[0087] The device provided in this application embodiment has the same implementation principle and technical effect as the aforementioned method embodiment. For the sake of brevity, any parts of the device embodiment not mentioned can be referred to the corresponding content in the aforementioned method embodiment.

[0088] This application also provides a controller, such as... Figure 4 The diagram shows the structure of the controller 100, which includes a processor 41 and a memory 40. The memory 40 stores computer-executable instructions that can be executed by the processor 41. The processor 41 executes the computer-executable instructions to implement any of the methods described above.

[0089] exist Figure 4 In the illustrated embodiment, the controller further includes a bus 42 and a communication interface 43, wherein the processor 41, the communication interface 43, and the memory 40 are connected via the bus 42.

[0090] The memory 40 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 43 (which can be wired or wireless), such as the Internet, wide area network, local area network, metropolitan area network, etc. The bus 42 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus 42 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0091] Processor 41 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 41 or by software instructions. Processor 41 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in the memory, and the processor 41 reads the information in the memory and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiment.

[0092] The aforementioned controller can be an air conditioning and thermal management controller (CLM) or a separate controller. Based on the same inventive concept, this application also provides a climate-controlled cabin control system for hybrid vehicles, including: an external temperature sensor, an internal temperature sensor, an air conditioning and thermal management controller (CLM), a vehicle control unit (HCU / VCU), a battery management system (BMS), an air conditioning controller and actuators, a central control screen (IHU), a remote communication module (T-Box), and optional vital signs detection sensors and thermoelectric cooling modules. The CLM is configured to perform core steps in the aforementioned method, such as temperature monitoring, network wake-up, high-voltage request, air conditioning control, and exit judgment. All modules are connected via an in-vehicle network and work collaboratively.

[0093] This application also provides a hybrid vehicle including the aforementioned controller. The vehicle can be a plug-in hybrid or a non-plug-in hybrid model. This method can provide users with long-term high-temperature protection while parking, ensuring that the battery does not run out, significantly improving the comfort of driving in summer.

[0094] This application also provides a computer-readable storage medium storing computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions cause the processor to implement the above-described method. For specific implementation details, please refer to the foregoing method embodiments, which will not be repeated here.

[0095] The hybrid vehicle constant temperature cabin control method, device, controller and vehicle computer program product provided in the embodiments of this application include a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the preceding method embodiments. For specific implementation, please refer to the method embodiments, which will not be repeated here.

[0096] Unless otherwise specifically stated, the relative steps, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application.

[0097] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for controlling the temperature-controlled cabin of a hybrid vehicle, characterized in that, include: When the outside temperature exceeds a preset outside temperature threshold, the vehicle communication network is activated. If the interior temperature is higher than the activation threshold corresponding to the preset temperature control strategy, a high-voltage power-on request is generated; wherein, the preset temperature control strategy includes: after the vehicle is armed, the interior temperature, exterior temperature, timestamp and the vehicle's location are uploaded to the cloud, and the cloud generates the data based on the weather information of the vehicle's location within a preset time period and the historical distribution of the vehicle's current off-vehicle time. The high-voltage power-on request is sent to the air conditioning system through the vehicle communication network, and the air conditioning system is controlled to execute the preset temperature control strategy.

2. The method according to claim 1, characterized in that, Before activating the vehicle communication network, the following is also included: When the vehicle is armed and the power is off, a timer starts and continuously monitors the interior and exterior temperatures.

3. The method according to claim 2, characterized in that, Also includes: Control the communication bus to maintain a wake-up state; When the timing duration exceeds the preset monitoring cycle, the control communication bus enters sleep mode and stops temperature monitoring.

4. The method according to claim 1, characterized in that, The preset temperature control strategy also includes a working mode determined according to the user's setting instructions, the working mode including an air-conditioning mode and an air-conditioning-free mode; controlling the air conditioning system to execute the preset temperature control strategy includes: When the preset temperature control strategy is in air conditioning mode, the compressor and blower are turned on, and the air conditioner is controlled to enter the internal circulation mode. When the preset temperature control strategy is the no-air conditioning mode, the blower is controlled to run at the preset speed, and the air conditioner is controlled to enter the external circulation mode.

5. The method according to claim 4, characterized in that, Before controlling the start-up of the compressor and blower, the following is also included: Determine whether the power battery charge of the vehicle is higher than a preset cooling energy consumption threshold; If the power battery charge is lower than the cooling energy consumption threshold, then the no-air conditioning mode is executed.

6. The method according to claim 2, characterized in that, Before generating the high-voltage power-on request, the following is also included: Acquire the vehicle's power battery charge signal and high-voltage system fault signal; When the power battery charge is higher than a preset charge threshold and the high-voltage system fault signal indicates no fault, a high-voltage power-on request is allowed to be generated. When the power battery charge is lower than or equal to the preset charge threshold, or when the high-voltage system signal indicates a fault, the constant temperature cabin control is terminated.

7. The method according to claim 1 or 6, characterized in that, Generate a high-voltage power-on request, including: Control the pre-charge relay to close in order to perform pre-charging; Once the pre-charging is complete, a high-voltage power-on request is generated to control the closing of the high-voltage positive relay and the high-voltage negative relay.

8. The method according to claim 1, characterized in that, Also includes: When the temperature inside the vehicle drops to the stop threshold corresponding to the preset temperature control strategy, a high-voltage power-off request is generated. The high-voltage power-down request is sent to the air conditioning system via the vehicle communication network to control the air conditioning system to stop operating.

9. The method according to claim 1, characterized in that, Controlling the air conditioning system to stop operating includes at least one of the following triggering conditions: When the timing duration reaches the preset maximum running time, the air conditioning system is controlled to stop running and a high-voltage power-off is executed; When the vehicle's power battery charge is lower than a preset charge threshold, the air conditioning system is controlled to stop operating and a high-voltage power-off is performed. When the outside temperature is lower than the preset outside temperature exit threshold, the air conditioning system is controlled to stop operating and high voltage is cut off. When the vehicle is dearmed, the air conditioning system is controlled to stop operating and a high-voltage power-off is performed.

10. The method according to claim 1, characterized in that, Also includes: When the vehicle's small battery charge is lower than the first preset charge threshold and the power battery charge is higher than the second preset charge threshold, the power battery is controlled to replenish the small battery. When the power battery charge is lower than the third preset charge threshold, the engine is started to charge the power battery. During the power replenishment process, the thermostatic cabin control function is kept running normally.

11. The method according to claim 1, characterized in that, Also includes: Real-time monitoring of the operating status parameters of the air conditioning system; If the operating status parameters exceed the preset safety range, a high-voltage power-off request is generated and sent to the air conditioning system through the vehicle communication network to control the air conditioning system to stop operating.

12. A climate-controlled cabin control device for a hybrid vehicle, characterized in that, include: The network wake-up module is used to wake up the vehicle communication network when the outside temperature is higher than a preset outside temperature threshold. The interior temperature monitoring module generates a high-voltage power-on request when the interior temperature exceeds the activation threshold corresponding to the preset temperature control strategy. The temperature control module is used to send the high-voltage power-on request to the air conditioning system through the vehicle communication network, and control the air conditioning system to execute the preset temperature control strategy.

13. A controller, characterized in that, The method includes a processor and a memory, the memory storing computer-executable instructions executable by the processor, the processor executing the computer-executable instructions to implement the method of any one of claims 1 to 11.

14. A vehicle, characterized in that, Includes the controller as described in claim 13.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions that, when invoked and executed by a processor, cause the processor to perform the method according to any one of claims 1 to 11.

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