Hidden door handle icebreaking control method and device based on hydraulic system

Abstract

The invention discloses a hidden door handle icebreaking control method and device based on a hydraulic system. The hidden door handle icebreaking control method comprises the following steps that S1, the current temperature and related information of a vehicle are obtained; s2, a driver selects an automatic vehicle door and door handle icebreaking mode or a manual vehicle door and door handle icebreaking mode; and S3, a driver opens the vehicle door and the hidden door handle according to the selected ice breaking mode, and according to the selected optimal mode and various conditions generated by unlocking the door, the hidden door handle is driven to pop up in a hydraulic mode, and the hidden door handle pop-up in a low-temperature environment is designed to realize a logic architecture, so that the hidden door handle pop-up is realized, and the safety of the driver is improved. Under the low-temperature icing condition, the vehicle door handle achieves ice breaking and popping up in a high-pressure hydraulic mode, and it is guaranteed that a user normally opens and uses the vehicle door handle.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic technology, and in particular to a hidden door handle ice-breaking control method and device based on a hydraulic system. Background Art

[0002] A concealed door handle is a type of door handle designed to be flush or almost flush with the door surface, thereby "hiding" it when not in use. This design not only improves the overall aesthetics of the door, making it look more simple and modern, but also reduces the impact of the door handle on the appearance. It is particularly suitable for designs that pursue a minimalist style.

[0003] Some hidden electric door handles are implemented as electric pop-up methods. Under extreme conditions, when the car's electric door handles are frozen at low temperatures, the motor torque is insufficient, which can easily cause the door handles to fail to pop out. Moreover, existing hydraulic technology has mature applications in the automotive field, such as brake or suspension systems, but has not yet been used for hidden door handle driving. Summary of the Invention

[0004] The purpose of the present invention is to provide a hidden door handle ice-breaking control method and device based on a hydraulic system to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method and device for controlling ice-breaking of a hidden door handle based on a hydraulic system, comprising the following steps:

[0006] S1: Get the current temperature of the vehicle and related information;

[0007] S2: The driver selects the automatic opening of the door and door handle to break the ice mode or the manual opening of the door and door handle to break the ice mode;

[0008] S3: The driver opens the vehicle door and hidden door handle according to the selected ice-breaking mode, and unlocks the door according to the selected optimal mode.

[0009] Preferably, the step S1 includes the following contents:

[0010] S11: When the driver drives the vehicle for the first time, after IGON, the instrument panel or IVI obtains the current average temperature through the hidden door handle bonded door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor, and displays to inform the driver that the current average temperature information is lower than 0°C;

[0011] S12: You can choose to open the door and door handles automatically to break the ice or manually open the door and door handles to break the ice;

[0012] S13: The driver can manually open the door and door handle to break the ice mode through external microphone voice, Bluetooth, remote control key, mobile phone remote control, etc., and can also set single door mode, front two door mode or four door mode.

[0013] Preferably, step S2 includes the following contents:

[0014] S21: The driver selects the automatic door and door handle opening and ice-breaking mode;

[0015] S22: The driver selects manual door opening and door handle ice-breaking mode.

[0016] Preferably, step S3 includes the following contents:

[0017] S301: When the driver selects the automatic door opening and door handle breaking ice mode, the door handle pops open after the vehicle is unlocked. If it fails to pop open due to resistance, it will try to pop open again after 1 second.

[0018] S302: If the door handle pops open, the process ends successfully;

[0019] S303: If the door handle does not pop open, the door controller obtains temperature information from the hidden door handle contact door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor;

[0020] S304: If the average temperature is greater than or equal to 0 degrees, then open and end;

[0021] S305: If the average temperature is less than 0 degrees, the door controller obtains vehicle power information through the bus;

[0022] S306: If the power supply is normal, the door controller drives the heating wire in the hidden door handle and the sheet metal heating wire where the hidden door handle contacts the door to start heating. When the average temperature of the sheet metal temperature sensor where the hidden door handle contacts the door reaches 4°C, the door handle is attempted to be opened again. If resistance is encountered, the heating is continued until the temperature reaches 6°C, and the door handle is attempted to be opened again, and then the process stops.

[0023] S307: If the power supply is too low, the driver is prompted via the app, voice, or Bluetooth to ask whether to turn on the high voltage to supply power to the battery. The driver then chooses whether to turn on the high voltage. If the driver refuses to turn on the high voltage, the process ends. If the driver chooses to turn on the high voltage, the process proceeds to the previous step.

[0024] S308: After entering the previous step, if the electric door is selected, the door controller drives the electric door to open. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from opening. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If resistance is encountered, the heating is continued to 6°C and the door is tried again to open the door, and then the door stops.

[0025] S309: If manual door operation is selected, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven by the vehicle controller to heat. When the average temperature of the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor reaches 4°C, the horn, double flash lights or external speakers are used to remind the driver that the door can be opened manually, and then the vehicle stops.

[0026] Preferably, S310: if the driver chooses to manually open the door and door handle ice-breaking mode;

[0027] S311: After the vehicle is unlocked, the door handle pops up. If it fails to pop up due to resistance, it will try to pop up again after 1 second.

[0028] S312: If the door handle pops open, stop;

[0029] S313: If the door handle does not pop open, obtain temperature information from the hidden door handle contact door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor through the door controller;

[0030] S314: If the average temperature is greater than or equal to 0 degrees, stop;

[0031] S315: If the average temperature is less than 0 degrees, the driver is prompted via the app, voice, or Bluetooth to enable the door and door handle ice-breaking mode;

[0032] S316: If the driver refuses to start, stop;

[0033] S318: If the driver turns on the ice-breaking mode, the door controller obtains vehicle power information via the bus;

[0034] S319: If the power supply is normal, the door controller drives the heating wire in the hidden door handle and the sheet metal heating wire where the hidden door handle contacts the door to start heating. When the average temperature of the sheet metal temperature sensor where the hidden door handle contacts the door reaches 4°C, the door handle is attempted to be opened again. If resistance is encountered, the heating is continued until the temperature reaches 6°C, and the door handle is attempted to be opened again, and then the process stops.

[0035] S320: If the power supply is too low, the driver is prompted via an app, voice, or Bluetooth to ask whether to turn on the high voltage to supply power to the battery. The driver then chooses whether to turn on the high voltage. If the driver refuses to turn on the high voltage, the process ends. If the driver chooses to turn on the high voltage, the process proceeds to the previous step.

[0036] S321: After entering the previous step, if the electric door is selected, the door controller drives the electric door to open. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from opening. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If resistance is encountered, the heating is continued to 6°C and the door is tried again to open the door, and then the door stops.

[0037] S322: If manual door is selected, the electric door is driven to open through the door controller. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from being driven to open. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If there is resistance, continue to heat to 6°C and try to open the door again, and then stop.

[0038] A hidden door handle ice-breaking control device based on a hydraulic system includes: a hydraulic accumulator, a micro-plunger pump, a proportional reversing valve, a bidirectional hydraulic cylinder and a PTC heating device. The oil port of the accumulator is arranged on one side of the outlet of the micro-plunger pump, and the outlet of the micro-plunger pump is connected to the oil inlet of the proportional reversing valve through a high-pressure oil pipe. The two working oil ports of the proportional reversing valve are connected to the two chambers of the bidirectional hydraulic cylinder. The PTC heating device is arranged between the two working oil ports of the proportional reversing valve and the oil circuits connecting the two chambers of the bidirectional hydraulic cylinder.

[0039] Compared with the existing technology, the present invention has the following advantages: the hidden door handle is driven to pop out by hydraulic means, and the hidden door handle pop-up logic structure is designed in a low-temperature environment. In low-temperature icy conditions, the vehicle door handle is popped out by breaking the ice through high-pressure hydraulic mode, ensuring normal opening and use by the user;

[0040] By setting a high power density for the hydraulic system, the micro hydraulic cylinder can output a thrust of over 1000N (far exceeding that of the motor), thus improving the ice-breaking capability.

[0041] By selecting low-temperature anti-wear hydraulic oil, it can maintain fluidity and pumping capacity under -40°C conditions. At the same time, adding a designed PTC heating film to the hydraulic oil circuit can increase the oil circuit temperature in a short time.

[0042] And by designing the logic coordination of mechanical and hydraulic dual redundant systems, it can support manual hydraulic drive in the event of electronic failure, thereby providing users with optionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Schematic diagram of the process of the present invention;

[0044] Figure 2 This is a principle block diagram of the present invention;

[0045] Figure 3 Schematic diagram of the hydraulic system of the present invention. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] See also Figures 1 to 3 The present invention provides a technical solution: a hidden door handle ice breaking control method and device based on a hydraulic system, comprising the following steps:

[0048] S1: Get the current temperature of the vehicle and related information;

[0049] S2: The driver selects the automatic opening of the door and door handle to break the ice mode or the manual opening of the door and door handle to break the ice mode;

[0050] S3: The driver opens the vehicle door and hidden door handle according to the selected ice-breaking mode, and unlocks the door according to the selected optimal mode.

[0051] Wherein, the step S1 includes the following contents:

[0052] S11: When the driver drives the vehicle for the first time, after IGON, the instrument panel or IVI obtains the current average temperature through the hidden door handle bonded door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor, and displays to inform the driver that the current average temperature information is lower than 0°C;

[0053] S12: You can choose to open the door and door handles automatically to break the ice or manually open the door and door handles to break the ice;

[0054] S13: The driver can manually open the door and door handle to break the ice mode through external microphone voice, Bluetooth, remote control key, mobile phone remote control, etc., and can also set single door mode, front two door mode or four door mode.

[0055] Wherein, the step S2 includes the following contents:

[0056] S21: The driver selects the automatic door and door handle opening and ice-breaking mode;

[0057] S22: The driver selects manual door opening and door handle ice-breaking mode.

[0058] Wherein, the step S3 includes the following contents:

[0059] S301: When the driver selects the automatic door opening and door handle breaking ice mode, the door handle pops open after the vehicle is unlocked. If it fails to pop open due to resistance, it will try to pop open again after 1 second.

[0060] S302: If the door handle pops open, the process ends successfully;

[0061] S303: If the door handle does not pop open, the door controller obtains temperature information from the hidden door handle contact door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor;

[0062] S304: If the average temperature is greater than or equal to 0 degrees, then open and end;

[0063] S305: If the average temperature is less than 0 degrees, the door controller obtains vehicle power information through the bus;

[0064] S306: If the power supply is normal, the door controller drives the heating wire in the hidden door handle and the sheet metal heating wire where the hidden door handle contacts the door to start heating. When the average temperature of the sheet metal temperature sensor where the hidden door handle contacts the door reaches 4°C, the door handle is attempted to be opened again. If resistance is encountered, the heating is continued until the temperature reaches 6°C, and the door handle is attempted to be opened again, and then the process stops.

[0065] S307: If the power supply is too low, the driver is prompted via the app, voice, or Bluetooth to ask whether to turn on the high voltage to supply power to the battery. The driver then chooses whether to turn on the high voltage. If the driver refuses to turn on the high voltage, the process ends. If the driver chooses to turn on the high voltage, the process proceeds to the previous step.

[0066] S308: After entering the previous step, if the electric door is selected, the door controller drives the electric door to open. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from opening. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If resistance is encountered, the heating is continued to 6°C and the door is tried again to open the door, and then the door stops.

[0067] S309: If manual door operation is selected, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven by the vehicle controller to heat. When the average temperature of the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor reaches 4°C, the horn, double flash lights or external speakers are used to remind the driver that the door can be opened manually, and then the vehicle stops.

[0068] Among them, S310: if the driver chooses to manually open the door and door handle ice breaking mode;

[0069] S311: After the vehicle is unlocked, the door handle pops up. If it fails to pop up due to resistance, it will try to pop up again after 1 second.

[0070] S312: If the door handle pops open, stop;

[0071] S313: If the door handle does not pop open, obtain temperature information from the hidden door handle contact door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor through the door controller;

[0072] S314: If the average temperature is greater than or equal to 0 degrees, stop;

[0073] S315: If the average temperature is less than 0 degrees, the driver is prompted via the app, voice, or Bluetooth to enable the door and door handle ice-breaking mode;

[0074] S316: If the driver refuses to start, stop;

[0075] S318: If the driver turns on the ice-breaking mode, the door controller obtains vehicle power information via the bus;

[0076] S319: If the power supply is normal, the door controller drives the heating wire in the hidden door handle and the sheet metal heating wire where the hidden door handle contacts the door to start heating. When the average temperature of the sheet metal temperature sensor where the hidden door handle contacts the door reaches 4°C, the door handle is attempted to be opened again. If resistance is encountered, the heating is continued until the temperature reaches 6°C, and the door handle is attempted to be opened again, and then the process stops.

[0077] S320: If the power supply is too low, the driver is prompted via an app, voice, or Bluetooth to ask whether to turn on the high voltage to supply power to the battery. The driver then chooses whether to turn on the high voltage. If the driver refuses to turn on the high voltage, the process ends. If the driver chooses to turn on the high voltage, the process proceeds to the previous step.

[0078] S321: After entering the previous step, if the electric door is selected, the door controller drives the electric door to open. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from opening. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If resistance is encountered, the heating is continued to 6°C and the door is tried again to open the door, and then the door stops.

[0079] S322: If manual door is selected, the electric door is driven to open through the door controller. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from being driven to open. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If there is resistance, continue to heat to 6°C and try to open the door again, and then stop.

[0080] A hidden door handle ice-breaking control device based on a hydraulic system includes: a hydraulic accumulator, a micro-plunger pump, a proportional reversing valve, a bidirectional hydraulic cylinder and a PTC heating device. The oil port of the accumulator is arranged on one side of the outlet of the micro-plunger pump, and the outlet of the micro-plunger pump is connected to the oil inlet of the proportional reversing valve through a high-pressure oil pipe. The two working oil ports of the proportional reversing valve are connected to the two chambers of the bidirectional hydraulic cylinder respectively, and the PTC heating device is arranged between the two working oil ports of the proportional reversing valve and the oil circuits connecting the two chambers of the bidirectional hydraulic cylinder.

[0081] Specifically, when using the present invention, the existing hidden electric door handle needs a torque greater than 50N·m to break the ice when it freezes at -30℃, while the conventional small motor used for door handles is only 10-20N·m. First, the temperature sensor and pressure sensor at the end of the hidden door handle are used to sense the current state of the hidden door handle, and the sensed data is transmitted to the corresponding ECU control unit. When the control unit ECU receives the trigger signal of the door handle (user approach, car key trigger, mobile phone APP operation, etc.), the environment is judged based on the sensor's sensed data. When the temperature is greater than -5℃ or the resistance is less than 50N, it pops up in normal mode; the hydraulic system is started, and the oil suction port of the micro plunger pump is connected to the oil tank, and the oil outlet is connected to the main oil supply pipeline. The upper part is connected in parallel with the hydraulic accumulator (backflow is prevented by a one-way valve), and the oil inlet of the proportional reversing valve is connected through the main oil supply line. The two working oil ports of the proportional reversing valve are respectively connected to the rodless chamber and the rod chamber of the two-way hydraulic cylinder, and the oil return port of the proportional reversing valve is connected to the oil tank. An independent circulation heating circuit is adopted through the PTC heating device, and then the door handle base is popped out by the two-way hydraulic cylinder to unlock the door lock and then open the car door. When the temperature is ≤-5℃ or the resistance is ≥50N, it is popped out according to the ice-breaking mode; the PTC heating film is activated to heat the oil circuit, and then the hydraulic system is started. The plunger pump (high-pressure mode) is started through the hydraulic accumulator, and the rodless chamber and the rod chamber of the two-way hydraulic cylinder are respectively connected through the two working oil ports of the proportional reversing valve. Pop out the door handle base to unlock the door lock and open the door. When it is judged that the power is off, it needs to be opened through the manual emergency mechanism. The above is the entire working process of the hidden door handle ice-breaking control device of the hydraulic system. The specific method steps are as follows: when the driver drives the vehicle for the first time, after IGON, the instrument or IVI obtains the current average temperature through the hidden door handle fitting door sheet metal temperature sensor, hidden door handle temperature sensor, door frame rubber sleeve temperature sensor, door frame sheet metal temperature sensor, and displays the notification to the driver that the current average temperature information is below 0℃. You can choose to open the door and door handle ice-breaking mode automatically or manually. The driver can use the external microphone voice, Bluetooth, remote control key, mobile phone remote control etc., manually open the door and door handle to break the ice mode, and you can set the single-door mode, the front two-door mode or the four-door mode. According to the above, the driver chooses to automatically open the door and door handle to break the ice mode, or the driver chooses to manually open the door and door handle to break the ice mode. When the driver chooses to automatically open the door and door handle to break the ice mode, the door handle will pop up after the whole vehicle is unlocked. If it does not pop up due to resistance, try to pop it up again after 1 second. If the door handle pops up, it ends successfully. If the door handle does not pop up, the door controller obtains the temperature information of the hidden door handle fitting door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber sleeve temperature sensor, and the door frame sheet metal temperature sensor. If the average temperature is greater than or equal to 0 degrees, it can be opened and ended. If the average temperature is less than 0 degrees,The door controller obtains the power information of the whole vehicle through the bus. If the power is normal, the heating wire in the hidden door handle and the sheet metal heating wire of the hidden door handle attached to the door are driven by the door controller to start heating. When the average temperature of the sheet metal temperature sensor of the hidden door handle attached to the door reaches 4°C, try to pop open the door handle again. If there is resistance, continue to heat to 6°C and try to pop open the door handle again, and then stop. If the power is too low, the driver will be prompted through APP, voice or Bluetooth whether to turn on the high voltage to supply power to the battery. After that, it depends on the driver to choose whether to turn on the high voltage. If the driver refuses to turn on the high voltage, the work ends. If the driver chooses to turn on the high voltage, it enters the previous step. After entering the previous step, if the electric door is selected, the electric door is driven to open by the door controller When the driving current is greater than 1.2 times of the normal door opening current value, the electric door is stopped from being driven to open, and the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If there is resistance, it continues to heat to 6°C and tries to open the door again, and then stops. If manual door is selected, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven by the car controller to heat. When the average temperature of the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor reaches 4°C, the horn, double flash lights or external speakers are used to remind the driver that he can open the door manually, and then stop. If the driver chooses to manually open the door and door handle in ice-breaking mode, After the vehicle is unlocked, the door handle pops up. If it fails to pop up when encountering resistance, it will try to pop up again after 1 second. If the door handle pops up, it will stop. If the door handle does not pop up, the door controller will obtain the temperature information of the hidden door handle fitting the door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber sleeve temperature sensor, and the door frame sheet metal temperature sensor. If the average temperature is greater than or equal to 0 degrees, it will stop. If the average temperature is less than 0 degrees, the driver will be prompted through APP, voice or Bluetooth to turn on the door and door handle de-icing mode. If the driver refuses to turn it on, it will stop. If the driver turns on the de-icing mode, the door controller will obtain the vehicle power information through the bus. If the power is normal, the heating wire in the hidden door handle and the hidden door handle will be driven by the door controller. The sheet metal heating wire of the door that your hand touches starts to heat up. When the average temperature of the hidden door handle against the door sheet metal temperature sensor reaches 4°C, try to open the door handle again. If you encounter resistance, continue to heat to 6°C and try to open the door handle again, then stop. If the power supply is too low, the driver will be prompted through APP, voice or Bluetooth to ask whether to power on the battery with high voltage. After that, it depends on the driver to choose whether to power on the high voltage. If the driver refuses to power on the high voltage, the work ends. If the driver chooses to power on the high voltage, the process goes to the previous step. After entering the previous step, if the electric door is selected, the electric door is driven to open through the door controller. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from being driven to open, and the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven at the same time.When the average temperature of the door frame rubber cover temperature sensor and the door frame sheet metal temperature sensor reaches 4°C, the door controller drives the electric door to open again. If it encounters resistance, it continues to heat to 6°C and tries to open the door again, then stops. If a manual door is selected, the door controller drives the electric door to open. When the driving current is greater than 1.2 times the normal door opening current value, the electric door stops opening and drives the door frame rubber cover heating wire and the door frame sheet metal heating wire to heat. When the average temperature of the door frame rubber cover temperature sensor and the door frame sheet metal temperature sensor reaches 4°C, the door controller drives the electric door to open again. If it encounters resistance, it continues to heat to 6°C and tries to open the door again, then stops.

[0082] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hidden door handle ice breaking control method based on a hydraulic system, characterized in that: The following steps are involved: S1: Get the current temperature of the vehicle and related information; S2: The driver selects the automatic opening of the door and door handle to break the ice mode or the manual opening of the door and door handle to break the ice mode; S3: The driver opens the vehicle door and hidden door handle according to the selected ice-breaking mode, and unlocks the door according to the selected optimal mode.

2. The method for controlling ice-breaking of a hidden door handle based on a hydraulic system according to claim 1, characterized in that: The step S1 includes the following contents: S11: When the driver drives the vehicle for the first time, after IGON, the instrument panel or IVI obtains the current average temperature through the hidden door handle bonded door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor, and displays to inform the driver that the current average temperature information is lower than 0°C; S12: You can choose to open the door and door handles automatically to break the ice or manually open the door and door handles to break the ice; S13: The driver can manually open the door and door handle to break the ice mode through external microphone voice, Bluetooth, remote control key, mobile phone remote control, etc., and can also set single door mode, front two door mode or four door mode.

3. The method for controlling ice-breaking of a hidden door handle based on a hydraulic system according to claim 1, characterized in that: The step S2 includes the following contents: S21: The driver selects the automatic door and door handle opening and ice-breaking mode; S22: The driver selects manual door opening and door handle ice-breaking mode.

4. The method for controlling ice-breaking of a hidden door handle based on a hydraulic system according to claim 1, characterized in that: The step S3 includes the following contents: S301: When the driver selects the automatic door opening and door handle breaking ice mode, the door handle pops open after the vehicle is unlocked. If it fails to pop open due to resistance, it will try to pop open again after 1 second. S302: If the door handle pops open, the process ends successfully; S303: If the door handle does not pop open, the door controller obtains temperature information from the hidden door handle contact door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor; S304: If the average temperature is greater than or equal to 0 degrees, then open and end; S305: If the average temperature is less than 0 degrees, the door controller obtains vehicle power information through the bus; S306: If the power supply is normal, the door controller drives the heating wire in the hidden door handle and the sheet metal heating wire where the hidden door handle contacts the door to start heating. When the average temperature of the sheet metal temperature sensor where the hidden door handle contacts the door reaches 4°C, the door handle is attempted to be opened again. If resistance is encountered, the heating is continued until the temperature reaches 6°C, and the door handle is attempted to be opened again, and then the process stops. S307: If the power supply is too low, the driver is prompted via the app, voice, or Bluetooth to ask whether to turn on the high voltage to supply power to the battery. The driver then chooses whether to turn on the high voltage. If the driver refuses to turn on the high voltage, the process ends. If the driver chooses to turn on the high voltage, the process proceeds to the previous step. S308: After entering the previous step, if the electric door is selected, the door controller drives the electric door to open. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from opening. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If resistance is encountered, the heating is continued to 6°C and the door is tried again to open the door, and then the door stops. S309: If manual door operation is selected, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven by the vehicle controller to heat. When the average temperature of the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor reaches 4°C, the horn, double flash lights or external speakers are used to remind the driver that the door can be opened manually, and then the vehicle stops.

5. The method for controlling ice-breaking of a hidden door handle based on a hydraulic system according to claim 4, characterized in that: S310: If the driver chooses to manually open the door and door handle in ice-breaking mode; S311: After the vehicle is unlocked, the door handle pops up. If it fails to pop up due to resistance, it will try to pop up again after 1 second. S312: If the door handle pops open, stop; S313: If the door handle does not pop open, obtain temperature information from the hidden door handle contact door sheet metal temperature sensor, the hidden door handle temperature sensor, the door frame rubber cover temperature sensor, and the door frame sheet metal temperature sensor through the door controller; S314: If the average temperature is greater than or equal to 0 degrees, stop; S315: If the average temperature is less than 0 degrees, the driver is prompted via the app, voice, or Bluetooth to enable the door and door handle ice-breaking mode; S316: If the driver refuses to start, stop; S318: If the driver turns on the ice-breaking mode, the door controller obtains vehicle power information via the bus; S319: If the power supply is normal, the door controller drives the heating wire in the hidden door handle and the sheet metal heating wire where the hidden door handle contacts the door to start heating. When the average temperature of the sheet metal temperature sensor where the hidden door handle contacts the door reaches 4°C, the door handle is attempted to be opened again. If resistance is encountered, the heating is continued until the temperature reaches 6°C, and the door handle is attempted to be opened again, and then the process stops. S320: If the power supply is too low, the driver is prompted via an app, voice, or Bluetooth to ask whether to turn on the high voltage to supply power to the battery. The driver then chooses whether to turn on the high voltage. If the driver refuses to turn on the high voltage, the process ends. If the driver chooses to turn on the high voltage, the process proceeds to the previous step. S321: After entering the previous step, if the electric door is selected, the door controller drives the electric door to open. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from opening. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If resistance is encountered, the heating is continued to 6°C and the door is tried again to open the door, and then the door stops. S322: If manual door is selected, the electric door is driven to open through the door controller. When the driving current is greater than 1.2 times the normal door opening current value, the electric door is stopped from being driven to open. At the same time, the door frame rubber sleeve heating wire and the door frame sheet metal heating wire are driven to heat the door frame rubber sleeve temperature sensor and the door frame sheet metal temperature sensor. When the average temperature reaches 4°C, the door controller drives the electric door to open again. If there is resistance, continue to heat to 6°C and try to open the door again, and then stop.

6. A device based on the method for controlling ice breaking of a hidden door handle based on a hydraulic system according to any one of claims 1 to 5, characterized in that: include: A hydraulic accumulator, a micro plunger pump, a proportional reversing valve, a bidirectional hydraulic cylinder and a PTC heating device, wherein the oil port of the accumulator is arranged on one side of the outlet of the micro plunger pump, the outlet of the micro plunger pump is connected to the oil inlet of the proportional reversing valve through a high-pressure oil pipe, the two working oil ports of the proportional reversing valve are connected to the two chambers of the bidirectional hydraulic cylinder, and the PTC heating device is arranged between the two working oil ports of the proportional reversing valve and the oil circuits connecting the two chambers of the bidirectional hydraulic cylinder.

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