Control method and device for vehicle-mounted refrigerator

Abstract

The invention relates to the technical field of vehicles, in particular to a control method and device for a vehicle-mounted refrigerator. The method comprises the steps that whether the vehicle-mounted refrigerator receives a diagnosis instruction or not is judged; if the diagnosis instruction is received, the current power-on duration of the vehicle-mounted refrigerator is obtained, and whether the vehicle-mounted refrigerator meets the condition for executing the diagnosis instruction or not is judged according to the current power-on duration; and if the vehicle-mounted refrigerator meets the condition for executing the diagnosis instruction, performing diagnosis control on the vehicle-mounted refrigerator according to the diagnosis instruction. Therefore, the problems that when the software and hardware version parameters of the refrigerator are obtained or the message information of the vehicle-mounted refrigerator is monitored, the professional requirement for operators is high, the operation process is tedious, and the diagnosis efficiency is too low are solved, the diagnosis efficiency is improved, and the use experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a control method and device for a vehicle refrigerator. Background Art

[0002] With the development of the domestic vehicle industry and the improvement of living standards, people's demand for car refrigerators is increasing. Therefore, it is necessary to retrieve the software and hardware version status values ​​of the car refrigerator and monitor the message information of the car refrigerator.

[0003] In the related art, when retrieving the software and hardware version status value of the refrigerator or monitoring the message information of the vehicle refrigerator, an adapter cable is generally connected to the vehicle-side port, and then read through a dedicated device and an external computer program.

[0004] However, the methods in the related technologies require high professionalism of the operators, and the operation process is relatively complicated and inefficient, which needs to be solved urgently. Summary of the invention

[0005] The present invention provides a control method and device for a vehicle refrigerator, so as to solve the problem that the professional requirements for operators are very high when obtaining the software and hardware parameters of the refrigerator or monitoring the message information of the vehicle refrigerator, and the operation process is relatively complicated, resulting in low diagnostic efficiency, thereby improving the diagnostic efficiency and enhancing the user experience.

[0006] A first aspect of the present invention provides a control method for a vehicle refrigerator, comprising the following steps: determining whether the vehicle refrigerator has received a diagnostic instruction; if the diagnostic instruction is received, obtaining the current power-on time of the vehicle refrigerator, and determining whether the vehicle refrigerator meets the conditions for executing the diagnostic instruction based on the current power-on time; if the vehicle refrigerator meets the conditions for executing the diagnostic instruction, performing diagnostic control on the vehicle refrigerator according to the diagnostic instruction.

[0007] Further, in some embodiments, the diagnostic instruction includes a factory mode start instruction and a monitoring mode start instruction, and the diagnostic control of the vehicle refrigerator according to the diagnostic instruction includes: if the diagnostic instruction is the factory mode start instruction, the vehicle refrigerator is controlled to enter the factory mode, and the factory setting information of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator; if the diagnostic instruction is the monitoring mode start instruction, the vehicle refrigerator is controlled to enter the monitoring mode, and the real-time operation data of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator.

[0008] Further, in some embodiments, judging whether the vehicle refrigerator meets the conditions for executing the diagnostic instruction based on the current power-on duration includes: judging whether the current power-on duration is less than a first preset duration; if the current power-on duration is less than the first preset duration, determining that the vehicle refrigerator meets the conditions for executing the diagnostic instruction.

[0009] Furthermore, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, it also includes: if the vehicle refrigerator has not received the diagnostic instruction, then when the vehicle refrigerator is in an off-vehicle continuous working mode and the vehicle is in a power-off state, determining whether the vehicle refrigerator has received an OTA upgrade request; if the vehicle refrigerator has received the OTA upgrade request, then after receiving a confirmed upgrade instruction sent by the user based on the OTA upgrade request, controlling the vehicle refrigerator to enter a low-power waiting mode until the vehicle completes the OTA upgrade, issuing a high-voltage power-on request through the vehicle refrigerator, and supplying power to the vehicle refrigerator when the vehicle is in a power-on state.

[0010] Furthermore, in some embodiments, after the vehicle refrigerator receives the OTA upgrade request, it also includes: if the upgrade confirmation instruction is not received within a first preset time period, a high-voltage power-on request is issued through the vehicle refrigerator, and it is determined whether the vehicle is in the power-on state within a second preset time period; if the vehicle is not in the power-on state within the second preset time period, the vehicle refrigerator is turned off, and the current status data of the vehicle refrigerator is recorded, otherwise, when the vehicle is in the power-on state, the vehicle refrigerator is powered on.

[0011] Furthermore, in some embodiments, after determining that the vehicle refrigerator is in the off-vehicle continuous working mode, it also includes: obtaining the vehicle interior temperature; if the vehicle interior temperature is greater than or equal to a second preset temperature and the vehicle interior temperature is less than or equal to a third preset temperature, sending a reminder message to a preset mobile terminal, otherwise, determining whether the vehicle interior temperature is greater than the third preset temperature; if the vehicle interior temperature is greater than the third preset temperature, turning off the vehicle refrigerator, and sending the refrigerator stop working information and the reason for stopping working to the preset mobile terminal.

[0012] Furthermore, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, it also includes: if the vehicle refrigerator has not received the diagnostic instruction, then when the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, determining the target gear position of the compressor according to the target temperature of the vehicle refrigerator; and adjusting the compressor to be at the target gear position.

[0013] Furthermore, in some embodiments, when it is determined that the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, it also includes: determining whether the vehicle has a power-off demand; if the vehicle has the power-off demand, recording the current mode and current temperature of the vehicle refrigerator, so as to control the vehicle refrigerator to operate according to the current mode and the current temperature when the vehicle is powered on next time.

[0014] Furthermore, in some embodiments, the control method of the vehicle refrigerator also includes: when the vehicle refrigerator is in an initialization state, determining whether the vehicle refrigerator is switched to a closed state before the vehicle was powered off last time; if the vehicle refrigerator is not switched to the closed state before the vehicle was powered off last time, determining that the vehicle has an abnormal power-off, and performing a travel self-calibration operation on the vehicle refrigerator after receiving a user's door opening command.

[0015] According to the control method of the vehicle refrigerator provided by the embodiment of the present invention, after judging that the vehicle refrigerator receives the diagnostic instruction and the vehicle refrigerator meets the conditions for executing the diagnostic instruction, the vehicle refrigerator is diagnosed and controlled according to the instruction. Thus, the problem of high professional requirements for operators when obtaining the software and hardware parameters of the refrigerator or monitoring the message information of the vehicle refrigerator and the problem of low diagnostic efficiency caused by the cumbersome operation process is solved, thereby improving the diagnostic efficiency and enhancing the user experience.

[0016] A second aspect of the present invention provides a control device for a vehicle refrigerator, comprising: a first judgment module, used to judge whether the vehicle refrigerator has received a diagnostic instruction; a second judgment module, used to, after receiving the diagnostic instruction and obtaining the current power-on time of the vehicle refrigerator, judge whether the vehicle refrigerator meets the conditions for executing the diagnostic instruction according to the current power-on time; a first control module, used to diagnose and control the vehicle refrigerator according to the diagnostic instruction when the vehicle refrigerator meets the conditions for executing the diagnostic instruction.

[0017] Further, in some embodiments, the diagnostic instruction includes a factory mode start instruction and a monitoring mode start instruction, and the first control module is specifically used to: if the diagnostic instruction is the factory mode start instruction, control the vehicle refrigerator to enter the factory mode, and display the factory setting information of the vehicle refrigerator on the display screen of the vehicle refrigerator; if the diagnostic instruction is the monitoring mode start instruction, control the vehicle refrigerator to enter the monitoring mode, and display the real-time operation data of the vehicle refrigerator on the display screen of the vehicle refrigerator.

[0018] Further, in some embodiments, the second judgment module is specifically used to: judge whether the current power-on time is less than a first preset time; if the current power-on time is less than the first preset time, determine that the vehicle refrigerator meets the conditions for executing the diagnostic instruction.

[0019] Further, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, the first judgment module is also used to: if the vehicle refrigerator has not received the diagnostic instruction, then when the vehicle refrigerator is in an off-vehicle continuous working mode and the vehicle is in a power-off state, determine whether the vehicle refrigerator has received an OTA upgrade request; if the vehicle refrigerator has received the OTA upgrade request, then after receiving a confirmed upgrade instruction sent by the user based on the OTA upgrade request, control the vehicle refrigerator to enter a low-power waiting mode until the vehicle completes the OTA upgrade, and then issue a high-voltage power-on request through the vehicle refrigerator, and power the vehicle refrigerator when the vehicle is in a power-on state.

[0020] Furthermore, in some embodiments, after the vehicle refrigerator receives the OTA upgrade request, the first control module is also used to: if the upgrade confirmation instruction is not received within a first preset time period, issue a high-voltage power-on request through the vehicle refrigerator, and determine whether the vehicle is in the power-on state within a second preset time period; if the vehicle is not in the power-on state within the second preset time period, turn off the vehicle refrigerator and record the current status data of the vehicle refrigerator, otherwise, when the vehicle is in the power-on state, supply power to the vehicle refrigerator.

[0021] Furthermore, in some embodiments, after determining that the vehicle refrigerator is in the off-vehicle continuous working mode, the first control module is also used to: obtain the vehicle interior temperature; if the vehicle interior temperature is greater than or equal to the second preset temperature and the vehicle interior temperature is less than or equal to the third preset temperature, send a reminder message to a preset mobile terminal; otherwise, determine whether the vehicle interior temperature is greater than the third preset temperature; if the vehicle interior temperature is greater than the third preset temperature, turn off the vehicle refrigerator, and send the refrigerator stop working information and the reason for stopping working to the preset mobile terminal.

[0022] Furthermore, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, the first control module is also used for: if the vehicle refrigerator has not received the diagnostic instruction, then when the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, determining the target gear position of the compressor according to the target temperature of the vehicle refrigerator; and adjusting the compressor to the target gear position.

[0023] Furthermore, in some embodiments, when it is determined that the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, the first control module is also used to: determine whether the vehicle has a power-off demand; if the vehicle has the power-off demand, record the current mode and current temperature of the vehicle refrigerator, so as to control the vehicle refrigerator to operate according to the current mode and the current temperature when the vehicle is powered on next time.

[0024] Furthermore, in some embodiments, the control device of the vehicle refrigerator also includes: a third judgment module, which is used to judge whether the vehicle refrigerator was switched to a closed state before the last vehicle power-off when the vehicle refrigerator is in an initialization state; if the vehicle refrigerator was not switched to the closed state before the last vehicle power-off, it is determined that the vehicle has an abnormal power-off, and a travel self-calibration operation is performed on the vehicle refrigerator after receiving a user's door opening command.

[0025] According to the control device of the vehicle refrigerator provided by the embodiment of the present invention, after judging that the vehicle refrigerator receives the diagnostic instruction and the vehicle refrigerator meets the conditions for executing the diagnostic instruction, the vehicle refrigerator is diagnosed and controlled according to the instruction. Thus, the problem of high professional requirements for operators when obtaining the software and hardware parameters of the refrigerator or monitoring the message information of the vehicle refrigerator and the problem of low diagnostic efficiency caused by the cumbersome operation process is solved, thereby improving the diagnostic efficiency and enhancing the user experience.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A flowchart of a control method for a vehicle refrigerator according to an embodiment of the present invention;

[0029] Figure 2 A control flow chart of a vehicle refrigerator entering a factory mode according to a specific embodiment of the present invention;

[0030] Figure 3 A control flow chart of a vehicle refrigerator entering a monitoring mode according to a specific embodiment of the present invention;

[0031] Figure 4 A flowchart of off-vehicle operation control provided according to a specific embodiment of the present invention;

[0032] Figure 54 is a block diagram of a control device for a vehicle refrigerator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The following describes the control method and device of the vehicle refrigerator of the embodiment of the present invention with reference to the accompanying drawings. In view of the problem mentioned in the above background technology that the professional requirements of the operator are very high when obtaining the software and hardware version parameters of the refrigerator or monitoring the message information of the vehicle refrigerator, and the operation process is relatively cumbersome, resulting in low diagnostic efficiency, the present invention provides a control method for a vehicle refrigerator. In this method, when it is determined that the vehicle refrigerator has received a diagnostic instruction, and after the vehicle refrigerator meets the conditions for executing the diagnostic instruction, the vehicle refrigerator is diagnosed and controlled according to the instruction. Thereby, the problem that the professional requirements of the operator are very high when obtaining the software and hardware version parameters of the refrigerator or monitoring the message information of the vehicle refrigerator, and the operation process is relatively cumbersome, resulting in low diagnostic efficiency, is solved, the diagnostic efficiency is improved, and the user experience is enhanced.

[0035] Specifically, Figure 1 A schematic flow chart of a control method for a vehicle refrigerator provided in an embodiment of the present invention.

[0036] like Figure 1 As shown, the control method of the vehicle refrigerator includes the following steps:

[0037] In step S101, it is determined whether the vehicle refrigerator receives a diagnosis instruction.

[0038] The diagnostic instruction refers to a trigger signal for the vehicle refrigerator to perform diagnostic control, wherein, in some embodiments, the diagnostic instruction may include a factory mode start instruction and a monitoring mode start instruction.

[0039] Specifically, the vehicle refrigerator of the embodiment of the present invention may be provided with corresponding buttons. For example, the embodiment of the present invention generates a factory mode start instruction by detecting that the duration of the capacitance change of the two buttons "+" and "-" reaches a specific time. Similarly, the embodiment of the present invention may generate a monitoring mode start instruction by detecting that the duration of the capacitance change of the two buttons "custom button 1" and "custom button 2" reaches a specific time.

[0040] Further, if the embodiment of the present invention generates a factory mode start instruction by detecting that the duration of the change in capacitance of the two buttons "+" and "-" reaches a specific time, then it is determined that the car refrigerator has received the factory mode start instruction. Similarly, if the embodiment of the present invention generates a monitoring mode start instruction by detecting that the duration of the change in capacitance of the two buttons "Custom Button 1" and "Custom Button 2" reaches a specific time, then it is determined that the car refrigerator has received the monitoring mode start instruction.

[0041] In step S102, if a diagnosis instruction is received, the current power-on time of the vehicle refrigerator is obtained, and it is determined whether the vehicle refrigerator meets the conditions for executing the diagnosis instruction according to the current power-on time.

[0042] The current power-on duration is the duration from the initial power-on time node of the vehicle refrigerator to the current time node, and the current power-on duration can be recorded by an internal clock circuit.

[0043] It should be understood that after receiving the diagnostic instruction, the car refrigerator may be unable to execute the diagnostic instruction. Therefore, the embodiment of the present invention can determine whether the car refrigerator meets the conditions for executing the diagnostic instruction after receiving the diagnostic instruction. For example, the embodiment of the present invention can make a determination based on the current power-on time of the car refrigerator.

[0044] As a possible implementation method, in some embodiments, judging whether the vehicle refrigerator meets the condition for executing the diagnostic instruction according to the current power-on time includes: judging whether the current power-on time is less than a first preset time; if the current power-on time is less than the first preset time, judging that the vehicle refrigerator meets the condition for executing the diagnostic instruction. The first preset time may be a time preset by the user, a time obtained through a limited number of experiments, or a time obtained through a limited number of computer simulations, which is not specifically limited here.

[0045] For example, if the first preset duration is 1 minute, if the current power-on duration obtained is 30 seconds, since 30 seconds is less than 1 minute, it is determined that the car refrigerator meets the conditions for executing the diagnostic instruction; if the current power-on duration obtained is 3 minutes, since 3 minutes is greater than 1 minute, it is determined that the car refrigerator does not meet the conditions for executing the diagnostic instruction.

[0046] In step S103, if the vehicle refrigerator meets the conditions for executing the diagnosis instruction, the vehicle refrigerator is diagnosed and controlled according to the diagnosis instruction.

[0047] Among them, in some embodiments, the vehicle refrigerator is diagnosed and controlled according to the diagnostic instruction, including: if the diagnostic instruction is a factory mode start instruction, the vehicle refrigerator is controlled to enter the factory mode, and the factory setting information of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator; if the diagnostic instruction is a monitoring mode start instruction, the vehicle refrigerator is controlled to enter the monitoring mode, and the real-time operation data of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator.

[0048] Specifically, the embodiment of the present invention can perform corresponding control according to the specific instructions of the diagnosis instruction, which is described in detail below in conjunction with the specific instructions of the diagnosis instruction.

[0049] First, the diagnostic command is used as the factory mode start command for detailed description.

[0050] Since the factory mode start instruction is to read the software and hardware version status value of the vehicle refrigerator, the embodiment of the present invention can determine different display contents according to different buttons when the diagnostic instruction is the factory mode start instruction.

[0051] For example, within 30 seconds after the car refrigerator is powered on, long press the "+" and "-" buttons on the car refrigerator panel temperature, and the duration of the change reaches a specific time (such as greater than or equal to 5 to 10 seconds), and send the relevant signal to the main control MCU. The main control MCU compares the vehicle power status to the local mode "ON gear", and the internal clock circuit compares the network wake-up time to be less than or equal to 30 seconds, then reads the software and hardware version status value, and sends it to the display MCU for display, such as S01, H01, etc. The OEM can use this parameter to identify whether the refrigerator is installed correctly;

[0052] For example, within 30 seconds after the car refrigerator is powered on, long press the "Cool" and "Heat" buttons. The car refrigerator display MCU detects when the duration of the capacitance change of the "Cool" and "Heat" buttons reaches a specific time (such as greater than or equal to 5 to 10 seconds), and sends the relevant signal to the main control MCU. The main control MCU then compares the vehicle power status bit to the local mode "ON gear", and the internal clock circuit compares the network wake-up time to be less than or equal to 30 seconds. According to the signal data of the temperature sensor arranged inside the box, the signal data value is sent to the MCU screen for display, such as T06, T45, etc. The user can use this parameter to determine whether the refrigerator is working according to the preset value.

[0053] In order to facilitate those skilled in the art to understand in detail the control process of the vehicle refrigerator entering the factory mode, the following is combined with Figure 2 The illustrated embodiment is described in detail.

[0054] like Figure 2 As shown, Figure 2 This is a control flow chart of a vehicle refrigerator entering a factory mode according to an embodiment of the present invention. The control flow includes the following steps:

[0055] In step S201, it is determined whether the refrigerator has been powered on for less than 1 minute. If it is less than 1 minute, step S202 is executed, and if it is greater than or equal to 1 minute, step S206 is executed.

[0056] In step S202, the vehicle refrigerator allows querying the hardware and software version numbers.

[0057] In step S203, it is detected whether the "+" key and the "-" key are triggered simultaneously for more than 3 seconds. If they are triggered simultaneously for more than 3 seconds, step S204 is executed. Otherwise, the detection is continued until the "+" key and the "-" key are triggered simultaneously for more than 3 seconds.

[0058] In step S204, the display screen displays the version number, and the display is cyclically switched by pressing the "+" key.

[0059] In step S205, if there is no key trigger for 5 seconds, the factory mode is exited and the brightness of the LED light is reduced to save energy.

[0060] In step S206, if the refrigerator has been powered on for more than 1 minute, querying the hardware and software version numbers is not allowed.

[0061] Thus, it is possible to quickly enter the factory mode by simultaneously triggering the car refrigerator button "+" and the button "-", so as to query the hardware and software information of the car refrigerator.

[0062] Secondly, the diagnostic command is used as the command to turn on the monitoring mode for detailed description.

[0063] Specifically, the embodiment of the present invention can pre-define long pressing of two buttons on the control panel of the refrigerator to put the panel into "monitoring mode" to retrieve real-time data of some signals from the main control board, such as whether there is a voltage fault, communication fault, electrical fault, etc. inside the refrigerator, and display it on the panel according to the numbers designed in the early stage. It should be noted that in the monitoring mode, after entering the monitoring interface, if there are multiple monitored messages, you can turn the pages by pressing the buttons. For example, it was defined in the early stage: the display mode of the signal representing the voltage fault is: A00: represents no voltage fault, A01: represents a voltage fault. The display interface will display the status of signal A in real time. If you need to monitor other signals, press the "+" button to turn the page to enter the signal B interface.

[0064] For example, Figure 3 As shown, Figure 3 This is a control flow chart of a vehicle refrigerator entering a monitoring mode according to an embodiment of the present invention. The control flow includes the following steps:

[0065] In step S301, it is determined whether the refrigerator has been powered on for less than 1 minute. If so, step S302 is executed; if so, step S307 is executed.

[0066] In step S302, the vehicle refrigerator is allowed to enter the monitoring mode.

[0067] In step S303, it is detected whether the "cooling" button and the "heating" button are triggered at the same time for more than 5 seconds. If the "cooling" button and the "heating" button are triggered at the same time for more than 5 seconds, step S304 is executed. If the "cooling" button and the "heating" button are triggered at the same time for less than or equal to 5 seconds, step S308 is executed.

[0068] In step S304, the panel display can specify data signals, and can be empty, and the "+" button can be used to switch to monitor different signal data.

[0069] In step S305, it is determined whether there is no key trigger for more than 5 seconds. If there is no key trigger for more than 5 seconds, step S306 is executed. If there is a key trigger within 5 seconds, step S309 is executed.

[0070] In step S306, if there is no key trigger for more than 5 seconds, the monitoring mode is exited.

[0071] In step S307, if the vehicle refrigerator is powered on for more than 1 minute, it is not allowed to enter the monitoring mode.

[0072] In step S308, the "cooling" button and the "heating" button are triggered simultaneously for less than or equal to 5 seconds, and the panel maintains the normal display function.

[0073] In step S309, if a key is triggered within 5 seconds, the panel maintains the monitoring mode display function.

[0074] In this way, the monitoring function of the car refrigerator can be realized by triggering the "cooling" button and the "heating" button at the same time, so as to obtain the mainboard message information, and then determine whether the refrigerator has voltage failure, communication failure, electrical failure and other problems, and display them on the display screen.

[0075] Therefore, after judging that the vehicle refrigerator has received the diagnostic instruction and meets the conditions for executing the diagnostic instruction, the vehicle refrigerator is diagnosed and controlled according to the instruction. This solves the problem that obtaining the software and hardware parameters of the refrigerator or monitoring the message information of the vehicle refrigerator requires high professionalism of the operator, and the operation process is relatively cumbersome, resulting in low diagnostic efficiency, thereby improving the diagnostic efficiency and enhancing the user experience.

[0076] Furthermore, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, it also includes: if the vehicle refrigerator has not received the diagnostic instruction, then when the vehicle refrigerator is in an off-vehicle continuous working mode and the vehicle is in a power-off state, determining whether the vehicle refrigerator has received an OTA upgrade request; if the vehicle refrigerator has received an OTA upgrade request, then after receiving a confirmed upgrade instruction sent by the user based on the OTA upgrade request, controlling the vehicle refrigerator to enter a low-power waiting mode until the vehicle completes the OTA upgrade, and then issuing a high-voltage power-on request through the vehicle refrigerator, and supplying power to the vehicle refrigerator when the vehicle is in a power-on state.

[0077] Among them, users can turn on the refrigerator's off-vehicle continuous working function in the car computer, and can provide users with off-vehicle working time options, such as 0 to 24 hours or unlimited time. After the user turns on this function, the refrigerator will actively request high-voltage power distribution to keep the function running continuously without consuming the small battery power when it recognizes that the vehicle mode is in the offline mode "OFF" state. In addition, during the preparation and operation of off-vehicle continuous working, it will determine in real time whether the vehicle's power is too low to protect the power.

[0078] As a possible implementation method, it is determined whether the vehicle power is greater than or equal to 20%. If the vehicle power is greater than or equal to 20%, it is allowed to enter the off-vehicle working mode. If the vehicle power is less than 20%, it is not allowed to enter the off-vehicle working mode. After entering the off-vehicle working mode, another judgment is added. If the vehicle power is greater than 10%, the off-vehicle working mode is maintained. If the vehicle power is less than or equal to 10%, low power protection is performed, the off-vehicle working mode is exited, the refrigerator is automatically turned off, the current data is recorded, and an APP reminder is issued.

[0079] Furthermore, in some embodiments, after the vehicle refrigerator receives the OTA upgrade request, it also includes: if no upgrade confirmation instruction is received within a first preset time period, a high-voltage power-on request is issued through the vehicle refrigerator, and it is determined whether the vehicle is in a powered-on state within a second preset time period; if the vehicle is not in a powered-on state within the second preset time period, the vehicle refrigerator is turned off, and the current status data of the vehicle refrigerator is recorded, otherwise, when the vehicle is in a powered-on state, power is supplied to the vehicle refrigerator.

[0080] As a possible implementation method, when the user sets the vehicle to continue working when away from the vehicle and sets the vehicle to OTA upgrade when away from the vehicle, the refrigerator detects that the vehicle mode is in the offline mode "OFF" state. The refrigerator receives the OTA mode "ON" signal and enters the waiting mode. Only the LIN transceiver is kept working, and the MCU is not working. At the same time, a reminder message is reported to the user: "The refrigerator is in use. If OTA is required, the refrigerator will exit work. Please confirm whether to execute OTA". Within the first preset time, for example, if the user chooses OTA upgrade within 10 seconds, the refrigerator will automatically shut down and record the current data. If the user chooses not to execute OTA within the first preset time, the refrigerator requests high voltage. At this time, if the vehicle has high voltage within the second preset time, such as within 10 seconds, it will operate normally. If high voltage is not applied within 10 seconds, the refrigerator will automatically shut down and record the current data. It should be noted that the second preset time can be set by the experimenter or determined according to the actual experimental test situation. There is no specific restriction here.

[0081] In order to enable relevant technical personnel to better understand the off-vehicle operation control process of the vehicle refrigerator in the embodiment of the present invention, a detailed description will be given below in conjunction with specific embodiments.

[0082] like Figure 4 As shown, Figure 4 A flowchart of off-vehicle operation control of a vehicle refrigerator according to a specific embodiment of the present invention includes the following steps:

[0083] In step S401, the user chooses to start the off-vehicle continuous working mode and sets the duration;

[0084] In step S402, it is determined whether the vehicle power is greater than or equal to 20%. If the vehicle power is greater than or equal to 20%, step S403 is executed. If the vehicle power is less than 20%, step S410 is executed.

[0085] In step S403, entering the off-vehicle continuous working mode is allowed.

[0086] In step S404, it is further determined whether the vehicle power level is greater than 10%. If the vehicle power level is greater than 10%, step S405 is executed. If the vehicle power level is less than or equal to 10%, step S411 is executed.

[0087] In step S405, the off-vehicle continuous working mode operates normally.

[0088] In step S406, when the off-vehicle continuous working mode is operating normally, if an OTA upgrade is encountered, the low-power waiting mode is automatically entered.

[0089] In step S407, it is determined whether the user chooses to perform the OTA upgrade operation within 10 seconds. If the user chooses to perform the OTA upgrade within 10 seconds, step S408 is executed. If the user does not choose to perform the OTA upgrade within 10 seconds, step S412 is executed.

[0090] In step S408 , it is detected that the OTA mode signal is switched to the “ON” mode.

[0091] In step S409, before the OTA ends, a reminder will be issued 1-2 seconds in advance. The refrigerator receives the reminder signal that the OTA is about to end, wakes up the MCU internally and reads the last recorded status data. After the OTA mode is switched to "OFF", the MCU issues a high-voltage power distribution request and resumes working after leaving the vehicle according to the target value set by the user.

[0092] In step S410, entering the off-vehicle continuous working mode is not allowed.

[0093] In step S411, the vehicle-exit continuous working mode is exited, the vehicle refrigerator is automatically shut down, the current data is recorded and an APP reminder is issued.

[0094] In step S412, it is detected that the OTA mode signal is switched to the "OFF" mode, and the refrigerator requests high voltage.

[0095] In step S413, it is determined whether the refrigerator is pressurized within 10 seconds. If the refrigerator is pressurized within 10 seconds, step S414 is executed. If the refrigerator is not pressurized within 10 seconds, step S415 is executed.

[0096] In step S414, the vehicle refrigerator operates normally.

[0097] In step S415, the refrigerator is automatically turned off and the current data is recorded.

[0098] In this way, the refrigerator can continue to work when leaving the car, and actively control the power distribution of the on-board refrigerator, reducing power consumption during OTA upgrades, and protecting power when the vehicle is low on power.

[0099] Furthermore, in some embodiments, after determining that the vehicle refrigerator is in the off-vehicle continuous working mode, it also includes: obtaining the vehicle's interior temperature; if the vehicle's interior temperature is greater than or equal to the second preset temperature and the vehicle's interior temperature is less than or equal to the third preset temperature, sending a reminder message to a preset mobile terminal, otherwise, determining whether the vehicle's interior temperature is greater than the third preset temperature; if the vehicle's interior temperature is greater than the third preset temperature, turning off the vehicle refrigerator, and sending the refrigerator stop working information and the reason for stopping working to the preset mobile terminal.

[0100] As a possible implementation method, when the vehicle is identified as being in offline mode, the refrigerator is in refrigeration or freezing state, and the vehicle is continuously working, and the temperature inside the vehicle is monitored between the threshold of 55℃ and 60℃, a reminder is sent to the user through the APP: The current temperature inside the vehicle is detected to be high, and the compressor power will be affected. Please evaluate whether to continue using the car refrigerator function. When the temperature inside the vehicle is monitored above the threshold of 61℃, a reminder is sent to the user through the APP: The current temperature inside the vehicle is detected to be too high, and the compressor has started the overheating protection. The refrigerator refrigeration function has stopped, please remove the items in the refrigerator immediately.

[0101] Furthermore, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, it also includes: if the vehicle refrigerator has not received the diagnostic instruction, then when the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, determining the target gear of the compressor according to the target temperature of the vehicle refrigerator; and adjusting the compressor to the target gear.

[0102] The refrigerator MCU can store the "temperature" signal and compare it with the target temperature requirement to determine the compressor execution gear. For example: within the threshold of 10 to 20 degrees, the compressor executes gear 1, within the threshold of 0 to 10 degrees, the compressor executes gear 2, and within the threshold of -15 to -1 degrees, the compressor executes gear 3.

[0103] Furthermore, in some embodiments, when it is determined that the vehicle refrigerator is not in the off-vehicle continuous working mode and there is a cooling demand or a heating demand for the vehicle refrigerator, it also includes determining whether the vehicle needs to power off; if the vehicle needs to power off, the current mode and current temperature of the vehicle refrigerator are recorded so that the vehicle refrigerator can be controlled to operate according to the current mode and current temperature when the vehicle is powered on next time.

[0104] Specifically, the refrigerator MCU will memorize and store the last temperature value set by the user in each mode in the flash sector of the chip. The data storage area of ​​the refrigerator does not need to be erased when the power is turned off, that is, after the user turns off the power and locks the car, it still has the memory function. The user can set whether the memory is valid for one time or for a long time. Valid for one time means that the vehicle is powered off and the network is in sleep mode. The refrigerator MCU will erase the currently memorized "mode" and "temperature" data before sleeping. The next time the user gets in the car, the refrigerator needs to be restarted and reset. In addition, it can also be set to be valid for a long time, that is, the data stored in the refrigerator will not be erased after the vehicle is powered off. The next time the user gets in the car, the network wakes up the refrigerator and can automatically retrieve the data stored in the state before the last power off to execute, without the user having to restart the refrigerator again to set it.

[0105] Furthermore, in some embodiments, the control method of the vehicle refrigerator also includes: when the vehicle refrigerator is in an initialization state, determining whether the vehicle refrigerator was switched to a closed state before the last time the vehicle was powered off; if the vehicle refrigerator was not switched to a closed state before the last time the vehicle was powered off, determining that the vehicle was powered off abnormally, and performing a travel self-calibration operation on the vehicle refrigerator after receiving a door opening command from the user.

[0106] It should be understood that when the vehicle is powered off normally, the vehicle network will generally continue to be maintained for 10 to 30 seconds, the vehicle power mode signal will switch to the "OFF" position, and the refrigerator function will automatically switch according to the vehicle high-voltage status signal. If the vehicle high-voltage status signal is always in the "ON" state, the refrigerator will maintain the current working state; if the high-voltage signal is in the "OFF" state and lasts for more than 10 seconds, the refrigerator will automatically shut down and save the current "mode, temperature, door status, etc." status data. If the refrigerator is automatically shut down before the vehicle is powered off, it is judged that the power off is normal; if the refrigerator does not automatically shut down before the power is turned off, it is judged that the power off is abnormal. When the vehicle is powered off abnormally, the high-voltage power distribution will be disconnected immediately, and the vehicle refrigerator will not have time to switch off, nor to save the current status data, resulting in the refrigerator taking the current state of the door as the initial position after the next power-on, which will cause the door position control function to fail.

[0107] Therefore, the embodiment of the present invention adds a comparison and judgment of the last power-off in each power-on initialization process. If it is judged that the last power-off was abnormal (that is, the vehicle refrigerator was not switched to the closed state before the last vehicle power-off), it will automatically perform a trip self-calibration after waiting for the user's door opening command. For example: when the refrigerator is not switched to the closed state, the vehicle loses power abnormally due to an accident, and the refrigerator does not have time to store all the data at this time. Then, after the next power-on, it will automatically perform a trip self-calibration after waiting for the user's door opening command to prevent the refrigerator control function from failing due to abnormal power off.

[0108] In addition, the embodiment of the present application can also identify when the door of the vehicle refrigerator is not closed.

[0109] Specifically, the embodiment of the present invention can obtain the door opening and closing status data of the vehicle refrigerator in real time through the Hall sensor, and the duration of the refrigerator door opening state can be obtained through the internal clock circuit of the main control MCU. If the door is detected to be open for more than or equal to 5 minutes, and it is judged that the vehicle mode is in the local mode "ON" state, and it is judged that there is someone inside the vehicle, then the vehicle machine "Door not closed reminder" pop-up window warning is triggered to remind the user to close the refrigerator door to prevent the loss of cold air. If the door is detected to be open for more than or equal to 5 minutes, and it is judged that the vehicle mode is in the offline mode "OFF" state, it is judged that there is no one inside the vehicle, and the refrigerator is in the off-vehicle working state, then the remote APP end "Door not closed reminder" pop-up window warning is triggered to remind the user to close the refrigerator door through remote control or going to the vehicle. If the door state is still open 3 minutes after the pop-up window is issued, the MCU automatically exits the work, the refrigerator is closed, and the remote APP end is triggered to remind "the refrigerator has been automatically closed for you because the door has not been closed for a long time."

[0110] According to the control method of the vehicle refrigerator provided by the embodiment of the present invention, after judging that the vehicle refrigerator receives the diagnostic instruction and the vehicle refrigerator meets the conditions for executing the diagnostic instruction, the vehicle refrigerator is diagnosed and controlled according to the instruction. Thus, the problem of high professional requirements for operators when obtaining the software and hardware parameters of the refrigerator or monitoring the message information of the vehicle refrigerator and the problem of low diagnostic efficiency caused by the cumbersome operation process is solved, thereby improving the diagnostic efficiency and enhancing the user experience.

[0111] Next, the control device for the vehicle refrigerator according to the embodiment of the present invention will be described with reference to the accompanying drawings.

[0112] Figure 5 The figure is a block diagram of a control device for a vehicle refrigerator according to an embodiment of the present invention.

[0113] like Figure 5 As shown, the control device 10 of the vehicle refrigerator includes: a first judgment module 100 , a second judgment module 200 and a first control module 300 .

[0114] The first judgment module 100 is used to judge whether the vehicle refrigerator has received the diagnostic instruction. The second judgment module 200 is used to judge whether the vehicle refrigerator meets the conditions for executing the diagnostic instruction according to the current power-on time after receiving the diagnostic instruction and obtaining the current power-on time of the vehicle refrigerator. The first control module 300 is used to diagnose and control the vehicle refrigerator according to the diagnostic instruction when the vehicle refrigerator meets the conditions for executing the diagnostic instruction.

[0115] Further, in some embodiments, the diagnostic instruction includes a factory mode start instruction and a monitoring mode start instruction, and the vehicle refrigerator is diagnosed and controlled according to the diagnostic instruction. The first control module 300 is specifically used for: if the diagnostic instruction is a factory mode start instruction, the vehicle refrigerator is controlled to enter the factory mode, and the factory setting information of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator; if the diagnostic instruction is a monitoring mode start instruction, the vehicle refrigerator is controlled to enter the monitoring mode, and the real-time operation data of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator.

[0116] Further, in some embodiments, the second judgment module 200 is specifically used to: judge whether the vehicle refrigerator meets the conditions for executing the diagnostic instruction based on the current power-on time, including: judging whether the current power-on time is less than the first preset time; if the current power-on time is less than the first preset time, it is determined that the vehicle refrigerator meets the conditions for executing the diagnostic instruction.

[0117] Further, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, if the vehicle refrigerator has not received the diagnostic instruction, the first determination module 100 is also used to: when the vehicle refrigerator is in the off-vehicle continuous working mode and the vehicle is in a power-off state, determine whether the vehicle refrigerator has received an OTA upgrade request; if the vehicle refrigerator has received an OTA upgrade request, then after receiving the confirmed upgrade instruction sent by the user based on the OTA upgrade request, the first control module 300 is also used to: control the vehicle refrigerator to enter a low-power waiting mode until the vehicle completes the OTA upgrade, and then issue a high-voltage power-on request through the vehicle refrigerator, and supply power to the vehicle refrigerator when the vehicle is in a power-on state.

[0118] Furthermore, in some embodiments, after the vehicle refrigerator receives the OTA upgrade request, the first control module 300 is also used to: if no upgrade confirmation instruction is received within a first preset time period, then issue a high-voltage power-on request through the vehicle refrigerator, and determine whether the vehicle is in a powered-on state within a second preset time period; if the vehicle is not in a powered-on state within the second preset time period, then turn off the vehicle refrigerator and record the current status data of the vehicle refrigerator, otherwise, when the vehicle is in a powered-on state, power the vehicle refrigerator.

[0119] Furthermore, in some embodiments, after determining that the vehicle refrigerator is in the off-vehicle continuous working mode, the first control module 300 is also used to: obtain the vehicle's interior temperature; if the vehicle interior temperature is greater than or equal to the second preset temperature and the vehicle interior temperature is less than or equal to the third preset temperature, send a reminder message to a preset mobile terminal; otherwise, determine whether the vehicle interior temperature is greater than the third preset temperature; if the vehicle interior temperature is greater than the third preset temperature, turn off the vehicle refrigerator, and send the refrigerator stop working information and the reason for stopping working to the preset mobile terminal.

[0120] Furthermore, in some embodiments, after determining whether the vehicle refrigerator has received the diagnostic instruction, the first control module 300 is also used for: if the vehicle refrigerator has not received the diagnostic instruction, then when the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, determining the target gear position of the compressor according to the target temperature of the vehicle refrigerator; and adjusting the compressor to the target gear position.

[0121] Furthermore, in some embodiments, when it is determined that the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, the first control module 300 is also used to: determine whether the vehicle has a power-off demand; if the vehicle has a power-off demand, record the current mode and current temperature of the vehicle refrigerator, so as to control the vehicle refrigerator to operate according to the current mode and current temperature when the vehicle is powered on next time.

[0122] Furthermore, in some embodiments, the control device of the vehicle refrigerator further includes: a third judgment module, which is used to judge whether the vehicle refrigerator was switched to the closed state before the vehicle was powered off last time when the vehicle refrigerator is in the initialization state; if the vehicle refrigerator was not switched to the closed state before the vehicle was powered off last time, it is determined that the vehicle is powered off abnormally, and a trip self-calibration operation is performed on the vehicle refrigerator after receiving the user's door opening command. It should be noted that the above explanation of the embodiment of the control method of the vehicle refrigerator is also applicable to the control device of the vehicle refrigerator of this embodiment, and will not be repeated here.

[0123] According to the control method of the vehicle refrigerator provided by the embodiment of the present invention, after judging that the vehicle refrigerator receives the diagnostic instruction and the vehicle refrigerator meets the conditions for executing the diagnostic instruction, the vehicle refrigerator is diagnosed and controlled according to the instruction. Thus, the problem of high professional requirements for operators when obtaining the software and hardware parameters of the refrigerator or monitoring the message information of the vehicle refrigerator and the problem of low diagnostic efficiency caused by the cumbersome operation process is solved, thereby improving the diagnostic efficiency and enhancing the user experience.

[0124] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0125] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0126] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0127] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0128] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

Claims

1. A control method for a vehicle refrigerator, characterized in that: The following steps are involved: Determine whether the vehicle refrigerator receives a diagnosis instruction; If the diagnostic instruction is received, the current power-on time of the vehicle refrigerator is obtained, and whether the vehicle refrigerator meets the condition for executing the diagnostic instruction is determined according to the current power-on time; If the vehicle refrigerator meets the condition for executing the diagnosis instruction, the vehicle refrigerator is diagnosed and controlled according to the diagnosis instruction.

2. The method according to claim 1, characterized in that The diagnostic instruction includes a factory mode start instruction and a monitoring mode start instruction, and the vehicle refrigerator is diagnosed and controlled according to the diagnostic instruction, including: If the diagnosis instruction is the factory mode start instruction, the vehicle refrigerator is controlled to enter the factory mode, and the factory setting information of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator; If the diagnosis instruction is the monitoring mode start instruction, the vehicle refrigerator is controlled to enter the monitoring mode, and the real-time operation data of the vehicle refrigerator is displayed on the display screen of the vehicle refrigerator.

3. The method according to claim 1, characterized in that The determining, according to the current power-on time, whether the vehicle refrigerator meets the condition for executing the diagnosis instruction includes: Determine whether the current power-on duration is less than a first preset duration; If the current power-on time is less than the first preset time, it is determined that the vehicle refrigerator meets the condition for executing the diagnosis instruction.

4. The method according to claim 1, characterized in that After determining whether the vehicle refrigerator has received the diagnosis instruction, the method further includes: If the vehicle refrigerator does not receive the diagnostic instruction, when the vehicle refrigerator is in an off-vehicle continuous working mode and the vehicle is in a power-off state, determining whether the vehicle refrigerator receives an OTA upgrade request; If the car refrigerator receives the OTA upgrade request, after receiving the confirmed upgrade instruction sent by the user based on the OTA upgrade request, the car refrigerator is controlled to enter a low-power waiting mode until the vehicle completes the OTA upgrade, and a high-voltage power-on request is issued through the car refrigerator, and power is supplied to the car refrigerator when the vehicle is in the powered-on state.

5. The method according to claim 4, characterized in that After the vehicle refrigerator receives the OTA upgrade request, the method further includes: If the upgrade confirmation instruction is not received within the first preset time, a high-voltage power-on request is issued through the vehicle refrigerator, and it is determined whether the vehicle is in the power-on state within the second preset time; If the vehicle is not in the powered-on state within the second preset time period, the vehicle refrigerator is turned off and the current state data of the vehicle refrigerator is recorded; otherwise, when the vehicle is in the powered-on state, power is supplied to the vehicle refrigerator.

6. The method according to claim 4, characterized in that After determining that the vehicle refrigerator is in the off-vehicle continuous working mode, the method further includes: Acquiring the interior temperature of the vehicle; If the temperature inside the vehicle is greater than or equal to the second preset temperature and the temperature inside the vehicle is less than or equal to the third preset temperature, sending a reminder message to a preset mobile terminal; otherwise, determining whether the temperature inside the vehicle is greater than the third preset temperature; If the temperature inside the vehicle is greater than the third preset temperature, the vehicle refrigerator is turned off, and refrigerator stop working information and the reason for stopping working are sent to the preset mobile terminal.

7. The method according to claim 1, characterized in that After determining whether the vehicle refrigerator has received the diagnosis instruction, the method further includes: If the vehicle refrigerator does not receive the diagnostic instruction, when the vehicle refrigerator is not in the off-vehicle continuous working mode and there is a cooling demand or a heating demand for the vehicle refrigerator, determining a target gear position of the compressor according to a target temperature of the vehicle refrigerator; The compressor is adjusted to be at the target gear position.

8. The method according to claim 7, characterized in that When it is determined that the vehicle refrigerator is not in the off-vehicle continuous working mode and the vehicle refrigerator has a cooling demand or a heating demand, the method further includes: Determining whether the vehicle needs to be powered off; If the vehicle has the power-off requirement, the current mode and the current temperature of the vehicle refrigerator are recorded, so that when the vehicle is powered on next time, the vehicle refrigerator is controlled to operate according to the current mode and the current temperature.

9. The method according to claim 1, characterized in that: Also includes: When the vehicle refrigerator is in an initialization state, determining whether the vehicle refrigerator was switched to a closed state before the vehicle was powered off last time; If the vehicle refrigerator has not been switched to the closed state before the vehicle was powered off last time, it is determined that the vehicle is powered off abnormally, and a travel self-calibration operation is performed on the vehicle refrigerator after receiving a door opening instruction from the user.

10. A control device for a vehicle refrigerator, characterized in that: include: A first determination module, used to determine whether the vehicle refrigerator receives a diagnosis instruction; A second judgment module is used to, after receiving the diagnosis instruction and obtaining the current power-on time of the vehicle refrigerator, determine whether the vehicle refrigerator meets the condition for executing the diagnosis instruction according to the current power-on time; The first control module is used to diagnose and control the vehicle refrigerator according to the diagnosis instruction when the vehicle refrigerator meets the conditions for executing the diagnosis instruction.

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