A new energy vehicle-mounted refrigerator full-automatic door opening and closing system

Abstract

The present application relates to a kind of new energy vehicle-mounted refrigerator full-automatic door opening and closing system, by setting door opening protection and door closing protection in the control program of refrigerator door opening and closing, when refrigerator door body is blocked in the process of door opening, door opening protection is triggered, refrigerator door body is automatically closed, avoid the loss of cold air in refrigerator caused by refrigerator door body continue to open, it is beneficial to energy saving, when refrigerator door body is blocked in the process of door closing, door closing protection is triggered, driver is first stopped movement, avoid damage to driver, after driver stops movement to corresponding time, refrigerator is automatically opened, avoid refrigerator door body continue to contact with obstacle, it is convenient for user to clean obstacle manually.

Description

Technical Field

[0001] This invention relates to the field of vehicle refrigerator door opening and closing technology, specifically a fully automatic door opening and closing system for a new energy vehicle refrigerator. Background Technology

[0002] Existing refrigerators typically incorporate a drive mechanism on the door to achieve automatic opening and closing. For example, Chinese Patent No. ZL 202211626586.3 describes a control method for a refrigerator, relating to the field of refrigeration storage technology. The refrigerator includes a storage drawer and an automatic device for controlling the automatic opening or closing of the drawer. The control method includes: acquiring the operating parameters of the automatic device and / or the motion parameters of the storage drawer when the automatic device is controlled to open or close; determining whether the storage drawer is in a stopped state based on the operating parameters of the automatic device and / or the motion parameters of the storage drawer; and if so, controlling the automatic device to stop the movement of the storage drawer.

[0003] The aforementioned refrigerator control method determines whether the refrigerator door (storage drawer) is blocked during movement by using the operating parameters of the automatic device and / or the movement parameters of the storage drawer. If so, the refrigerator door simply stops moving. If the refrigerator door is blocked during opening, it stops moving after opening and cannot close automatically, making it easy for cold air inside the refrigerator to escape, which is detrimental to energy saving. Furthermore, the automatic device includes at least two encoders. There are two motors, each driving one side of the storage drawer. Each encoder is connected to one side of a motor or storage drawer and is used to detect the rotation of the motor or the movement of the storage drawer. The distance the storage drawer moves within a preset time period is obtained based on the output signal of at least one encoder. The large number of actuators and the encoders on the drawers or motors occupy internal space, resulting in a large refrigerator size. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic door opening and closing system for a new energy vehicle refrigerator. By setting door opening protection and door closing protection in the refrigerator door opening and closing control program, when the refrigerator door is obstructed during the opening process, the door opening protection is triggered, and the refrigerator door automatically closes, preventing the refrigerator door from continuing to open and causing the cold air inside the refrigerator to escape, which is beneficial to energy saving. When the refrigerator door is obstructed during the closing process, the door closing protection is triggered. The drive first stops moving to avoid damage to the drive. After the drive stops moving for a certain period of time, the refrigerator automatically opens, preventing the refrigerator door from continuing to contact the obstacle, making it convenient for the user to manually remove the obstacle.

[0005] The objective of this invention is achieved as follows:

[0006] A fully automatic door opening and closing system for a new energy vehicle refrigerator, characterized in that: the control method for the automatic door opening and closing of the new energy vehicle refrigerator is as follows:

[0007] Step 1: After the vehicle-mounted refrigerator is powered on, the control program outputs instructions and checks whether the refrigerator door is in the initial closed position. The refrigerator automatically checks if the door is in the initial closed position after power-on. If the door is not in the initial closed position, the control program controls the driver to move the door to the initial closed position. This prevents the refrigerator door from having an opening gap with the cabinet, preventing cold air loss. It also facilitates the technician's inspection to ensure the refrigerator door is in the initial position set by the control program before shipment, improving the shipment pass rate. If the refrigerator door is not in the initial closed position after power-on, an alarm is triggered, allowing the technician to identify and repair the issue. After shipment, the user is also alerted that the refrigerator door cannot close properly after power-on and requires timely repair, preventing the user from continuing to use the refrigerator if the door cannot close properly after power-on.

[0008] Step 2: The control program outputs open or close commands based on user operation to control the driver to move the refrigerator door to the specified open position or the initial closed position; the control program precisely controls the movement of the refrigerator door to ensure that the user can easily operate the refrigerator door, while ensuring the smoothness and accuracy of the door movement;

[0009] Step 3: According to the output opening command, if the refrigerator door is obstructed during the opening process, the control program will trigger the door opening protection. The control program will then output a closing command to close the refrigerator door, thus preventing the door from continuing to open despite obstruction and effectively avoiding damage to the door and the drive mechanism.

[0010] Alternatively, when the refrigerator door is opened and reaches the designated open position, the control program receives a signal to push the door to close and outputs a closing command to make the refrigerator door close.

[0011] Step 4: The control program outputs a closing command. When the refrigerator door is obstructed from closing, the control program's door closing protection is triggered. The control program then outputs an opening command to make the refrigerator door open, thus preventing the refrigerator door from continuing to close despite obstruction and effectively avoiding damage to the door and the drive mechanism.

[0012] In step one, after the refrigerator is powered on, the current signal generated by the reverse motion of the drive shaft is fed back to the control program. The control program identifies whether the refrigerator door is in the initial closed position based on the current signal.

[0013] The detector detects and records the number of rotations of the drive shaft of the driver and feeds it back to the control program. The control program receives the number of rotations of the drive shaft of the driver and converts it into the distance that the driver drives and transmits the movement of the refrigerator door.

[0014] The detectors include Hall sensors or encoders.

[0015] In step two, the output speed of the drive shaft of the driver is set by the control program to adjust the opening and closing speed of the refrigerator door. The fully automatic door opening and closing system of the vehicle refrigerator is powered by the motor (driver) to provide the original power for the refrigerator door's travel. The speed of the motor transmitting the refrigerator door is adjustable and controllable in the control program, fully meeting the needs of different application scenarios, such as fast opening mode, standard opening mode and slow opening mode. Users can select different speed modes through the operation module on the vehicle refrigerator according to actual needs, or the control program can automatically select the most suitable mode.

[0016] In step three and / or step four, when the control program activates the door opening protection and / or door closing protection, the control program controls the alarm module to activate the alarm protection prompt, warning the user that the refrigerator door cannot be opened or closed normally.

[0017] In step two, the control program controls the drive shaft of the driver to rotate in the forward direction to open the refrigerator door. By converting the number of rotations of the drive shaft of the driver into the distance the refrigerator door moves when it reaches the first set distance value of the control program, the drive shaft of the driver stops rotating.

[0018] The first set distance value is the distance the refrigerator door needs to move when it opens.

[0019] In step two, the control program controls the drive shaft of the driver to rotate in the opposite direction to drive the refrigerator door to close. By converting the number of rotations of the drive shaft of the driver into the distance the refrigerator door moves to close, the drive shaft of the driver stops rotating when the distance converted from the number of rotations of the drive shaft of the driver reaches the second set distance value of the control program.

[0020] The second set distance value is the movement distance of the refrigerator door when it closes.

[0021] In step three, the refrigerator door opens and moves to the designated open position. When the user pushes the refrigerator door to close, and the control program detects that the refrigerator door has not reached the initial closed position, the drive shaft of the driver rotates in the opposite direction when the user pushes the refrigerator door to close, generating a current signal that is fed back to the control program. The control program receives the current signal and determines that it is a signal to push the door to close. The control program outputs a closing command, the driver starts, and drives the refrigerator door to close automatically.

[0022] In step three, during the opening of the refrigerator door, if the control program detects that the refrigerator door has not reached the designated opening position, and the control program detects and receives the current signal generated by the drive shaft of the driver; if the control program determines that the refrigerator door is obstructed from opening based on the current signal generated by the drive shaft of the driver, the opening protection of the control program is triggered, the control program outputs the closing command, the driver starts and drives the refrigerator door to close automatically.

[0023] In step four, during the closing process of the refrigerator door, the control program detects that the refrigerator door has not reached the initial closed position, and the control program detects and receives the current signal generated by the drive shaft of the driver. If the control program determines that the refrigerator door is obstructed from closing based on the current signal generated by the drive shaft of the driver, the closing protection of the control program is triggered, the driver stops moving, and the driver restarts and drives the refrigerator door to open automatically after the control program outputs the closing command.

[0024] Users can select the refrigerator door to open and close via the operating module set on the vehicle refrigerator;

[0025] Alternatively, users can remotely select the refrigerator door to open and close.

[0026] The beneficial effects of this invention are as follows:

[0027] By setting door opening and closing protection in the refrigerator door opening and closing control program, the door opening protection is triggered when the refrigerator door is obstructed during the opening process, and the refrigerator door automatically closes to prevent the refrigerator door from continuing to open and causing cold air to escape from the refrigerator, which is beneficial to energy saving. When the refrigerator door is obstructed during the closing process, the door closing protection is triggered. The drive first stops moving to avoid damage to the drive. After the drive stops moving for a certain period of time, the refrigerator automatically opens to prevent the refrigerator door from continuing to contact the obstruction, making it convenient for the user to manually remove the obstruction.

[0028] This invention uses a single actuator to move the refrigerator door (drawer), which helps save costs. The actuator and drawer are connected via a pulley and belt, eliminating the need for screw and nut, and gear and rack meshing transmissions. These screw and nut, and gear and rack meshing transmissions require lubricating oil to reduce mechanical wear and improve transmission smoothness. However, lubricating oil has high viscosity at low temperatures, which can hinder transmission between the screw and nut, and between the gear and rack, thus increasing mechanical friction. The pulley and belt transmission eliminates the need for lubricating oil. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the refrigerator door opening and closing control process according to an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram illustrating the specific operation process of opening and closing the refrigerator door according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the refrigerator door in the closed state according to an embodiment of the present invention.

[0032] Figure 4This is a schematic cross-sectional view of a refrigerator door in the closed state according to an embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of a refrigerator door being obstructed during opening, according to an embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the structure of a refrigerator door that triggers the door opening protection and closes when the door is obstructed during the opening process, according to an embodiment of the present invention.

[0035] Figure 7 This is a schematic diagram of the structure of a refrigerator door that, after being opened, is obstructed from closing, triggering a door-closing protection mechanism, and then opens the refrigerator door again. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] See Figures 1-7 A fully automatic door opening and closing system for a new energy vehicle refrigerator, wherein the control method for the automatic door opening and closing of the new energy vehicle refrigerator is as follows:

[0038] Step 1: After the vehicle refrigerator is powered on, the control program outputs instructions and checks whether the refrigerator door is in the initial closed position;

[0039] Step 2: The control program outputs an open or close command based on the user's operation to control the driver 2 to move the refrigerator door to the specified open position or the initial closed position;

[0040] Step 3: According to the output opening command, if the refrigerator door is blocked during the opening process, the control program will trigger the door opening protection and output a closing command to make the refrigerator door close.

[0041] Alternatively, when the refrigerator door is opened and reaches the designated open position, the control program receives a signal to push the door to close and outputs a closing command to make the refrigerator door close.

[0042] Step 4: The control program outputs a closing command. When the refrigerator door is obstructed from closing, the control program's door closing protection is triggered. The control program then outputs an opening command to make the refrigerator door open.

[0043] In step one, after the refrigerator is powered on, the current signal generated by the reverse motion of the drive shaft of driver 2 is fed back to the control program. The control program identifies whether the refrigerator door is in the initial closed position based on the current signal. Specifically, when the vehicle refrigerator is powered on, the control program first issues a command to cause the drive shaft of driver 2 to move in the reverse direction. The purpose of this reverse movement is to generate a current feedback signal and to detect the current position of the refrigerator door. The movement of drive shaft 2 will generate a current signal related to the position of the refrigerator door. During the reverse movement of drive shaft 2, the control program monitors the changes in the current signal in real time. The control program makes a judgment based on the feedback current signal. If it detects that the refrigerator door is not in the initial closed position, the control program will issue a command, and driver 2 will start running to move the refrigerator door to the initial closed position. If it detects that the refrigerator door is in the initial closed position, the control program will enter a standby state, waiting for the user to input the opening or closing command. If it is found that the refrigerator door cannot close normally during the detection process, the control program will trigger an alarm prompt, which will help the maintenance personnel or users to discover the problem in time. This will help the maintenance personnel or users to discover and resolve abnormal situations that may affect the use of the vehicle refrigerator in advance, and ensure that the refrigerator door is in the correct initial state after each power-on.

[0044] The detector 8 detects and records the number of rotations of the drive shaft of the driver 2 and feeds it back to the control program. The control program receives the number of rotations of the drive shaft of the driver 2 and converts it into the distance that the driver 2 drives and transmits the movement of the refrigerator door.

[0045] Detector 8 includes a Hall sensor or an encoder.

[0046] Specifically, a Hall sensor or encoder is installed on the drive shaft of the driver 2 to monitor the rotation status of the drive shaft in real time. When the drive shaft rotates, the detector 8 generates a series of pulse signals. The detector 8 feeds these pulse signals back to the control program. The control program counts these pulses to calculate the total number of rotations of the drive shaft and converts these rotations into the actual movement distance of the refrigerator door according to the transmission ratio between the driver 2 and the refrigerator door. When the number of rotations or pulse signals detected by the Hall sensor or encoder does not reach the preset value, or when an abnormal rotation direction and speed are detected, the control program will determine that the refrigerator door may be obstructed. It will then trigger the door opening or closing protection mechanism, stop the movement of the driver 2, and issue a corresponding command (such as reopening or closing the refrigerator door) to prevent damage to the refrigerator door or the driver.

[0047] In step two, the output speed of the drive shaft of driver 2 is set by the control program to adjust the opening and closing speed of the refrigerator door.

[0048] In steps three and / or four, when the control program activates the door opening protection and / or door closing protection, it also activates the alarm module to provide an alarm protection alert. Specifically, in step three (door opening process) or step four (door closing process), the control program monitors the status of the refrigerator door in real time, including the distance traveled, speed, direction, and whether it is obstructed. When an abnormality is detected, such as the door failing to reach the preset open or closed position, or the refrigerator door being blocked by an obstacle, the control program immediately activates the door opening or closing protection mechanism, stopping the drive mechanism to prevent further force on the door. When the control program activates the protection mechanism, it simultaneously sends a signal to activate the alarm module. The alarm module can issue warnings through sound (buzzer), light signals (LED indicator lights), and even the vehicle system's display screen, clearly informing the user that the refrigerator door is currently not operating normally. The alarm message usually includes information that the refrigerator door cannot be opened or closed normally, reminding the user to check for obstacles around the door, whether the refrigerator is overfilled, or whether the refrigerator door's transmission mechanism needs maintenance. It promptly alerts the user to the abnormal status of the refrigerator door, prevents accidental operation, protects the refrigerator door and drive mechanism from further damage, and allows users to use the vehicle refrigerator with greater peace of mind.

[0049] In step two, the control program controls the drive shaft of driver 2 to rotate in the forward direction to drive the refrigerator door to open. By converting the number of rotations of the drive shaft of driver 2 into the distance the refrigerator door moves when it reaches the first set distance value of the control program, the drive shaft of driver 2 stops rotating.

[0050] In step two, the control program controls the drive shaft of driver 2 to rotate in the opposite direction to drive the refrigerator door to close. By converting the number of rotations of the drive shaft of driver 2 into the closing distance of the refrigerator door, the drive shaft of driver 2 stops rotating when the distance converted from the number of rotations of the drive shaft of driver 2 reaches the second set distance value of the control program.

[0051] In step three, the refrigerator door opens and moves to the designated open position. When the refrigerator door is pushed closed by hand, and the control program detects that the refrigerator door has not reached the initial closed position, the drive shaft of the driver 2 rotates in the opposite direction when the refrigerator door is pushed closed by hand and generates a current signal that is fed back to the control program. The control program receives the current signal and determines that it is a signal to push the door to close. The control program outputs a closing command, and the driver 2 starts and drives the refrigerator door to close automatically.

[0052] In step three, during the opening of the refrigerator door, if the control program detects that the refrigerator door has not reached the designated opening position, and detects and receives the current signal generated by the drive shaft of driver 2, if the control program determines that the refrigerator door is obstructed from opening based on the current signal generated by the drive shaft of driver 2, the opening protection of the control program is triggered, the control program outputs a closing command, and driver 2 starts and drives the refrigerator door to close automatically. Specifically, when the user manually pushes the refrigerator door to close, the movement of the refrigerator door will drive the drive shaft of the driver to rotate in the opposite direction through the transmission mechanism. At this time, driver 2, as a passive component, will generate a corresponding current signal due to the passive rotation of the drive shaft. The control program monitors the current signal of the driver in real time. When the drive shaft 2 is manually rotated, the generated current signal is different from the normal automatic closing signal. After receiving this specific current signal, the control program recognizes it as the user's manual pushing action and issues an automatic closing command. Driver 2 then starts the automatic closing of the refrigerator door, enabling intelligent response to the user's manual operation, assisting in closing the refrigerator door, and improving the convenience and intelligence of operation.

[0053] In step four, during the closing process of the refrigerator door, the control program detects that the refrigerator door has not reached the initial closed position, and detects and receives the current signal generated by the drive shaft of driver 2. If the control program determines that the refrigerator door is obstructed from closing based on the current signal generated by the drive shaft of driver 2, it triggers the door closing protection mechanism, driver 2 stops moving, and waits for the control program to output a door closing command before driver 2 restarts and drives the refrigerator door to open automatically. Specifically, when the refrigerator door encounters an obstacle during closing (such as the refrigerator door trapping an item, being subjected to force, etc.), the load on driver 2 increases, causing abnormal changes in the current signal. For example, the current may suddenly increase or fluctuate significantly. The control program will recognize this change and determine that the refrigerator door has encountered an obstacle. After confirming the obstruction, the control program immediately triggers the door closing protection mechanism, issues a command to stop the movement of driver 2, and prevents the refrigerator door from being further squeezed. After stopping the movement, the control program waits for a period of time to ensure safety and prepares for subsequent operations. Subsequently, the control program issues an opening command, and the drive shaft of drive 2 starts up again and rotates in the opposite direction to reopen the refrigerator door, ensuring that the refrigerator door no longer comes into contact with obstacles, allowing the user to perform manual inspection or adjustment.

[0054] Users can select the refrigerator door to open and close via the operating module set on the vehicle refrigerator;

[0055] Alternatively, users can remotely select the refrigerator door to open and close.

[0056] In this embodiment, the vehicle refrigerator includes an inner liner 3 and a drawer 1 that is pulled out and movable on the inner liner 3. The panel of the drawer 1 serves as the refrigerator door. The vehicle refrigerator cabinet is equipped with an operation module, which is an operation button or a touch control display screen.

[0057] The control circuit board of the operation module is wirelessly connected to the remote control terminal via a wireless module, allowing users to remotely operate the vehicle refrigerator.

[0058] The wireless module is either Bluetooth or Wi-Fi.

[0059] In this embodiment, the bottom of drawer 1 is provided with a clamping part 5 for clamping the belt 4. The clamping part includes a first clamping block that engages with the belt 4. The belt 4 has a plurality of spaced-apart first biting protrusions, and the first clamping block has a plurality of spaced-apart second biting protrusions. The first biting protrusions and the second biting protrusions make arc-shaped contact, which helps to reduce friction. The clamping part also includes a second clamping block fixed to the bottom of drawer 1. The second clamping block is located above the first clamping block and is connected to the first clamping block. The belt 4 is located between the first clamping block and the second clamping block.

[0060] In this embodiment, the driver 2 is a motor, and one end of the motor is equipped with a drive wheel 6. A rolling element is provided below the drawer 1, and the rolling element is rotatably mounted on the support 7.

[0061] In this embodiment, the belt 4 covers the drive wheel 6 and the rolling elements.

[0062] The drive shaft of the motor drives the drive wheel 6 to rotate, and the drive wheel 6 drives the rolling elements to rotate through the belt 4, which in turn drives the drawer 1 to move.

[0063] Specifically, the automatic door opening and closing control logic for the vehicle refrigerator:

[0064] After the vehicle refrigerator is powered on, the drive shaft of the driver 2 rotates counterclockwise to zero. If the drawer 1 is in the initial closed position, a stall current is generated during the counterclockwise rotation of the drive shaft of the driver 2. The control program identifies whether the drawer 1 is in the initial closed position through the stall current.

[0065] When the user presses the open button, the drive shaft of the driver 2 rotates clockwise, causing the drawer 1 to open. The detector 8 simultaneously records the number of rotations of the drive shaft. When the distance converted from the number of rotations reaches 180mm (the first set distance value in the control program), the drive shaft of the driver 2 stops rotating, and the drawer 1 reaches the open position.

[0066] When the user presses the close button, the drive shaft of the driver 2 rotates counterclockwise, causing the drawer 1 to close. The detector 8 records the number of rotations of the drive shaft at the same time, and the control detection circuit detects the motor operating current. When the number of rotations of the drive shaft reaches 180mm or the motor stall current is reached, the rotation stops (the drawer 1 is in the initial closed position, and the control program recognizes the zero state of the drawer 1).

[0067] It should be noted that the initial set distance of 180mm is an example value. In actual applications, it can be adjusted according to the design, size, and user needs of the vehicle refrigerator. For example, the initial set distance can also be 250mm, 240mm, 230mm, 220mm, 210mm, 200mm, 190mm, 170mm, 160mm, 150mm, 140mm, 130mm, 120mm, 110mm, or 100mm. This value can be modified to other appropriate distances through the control program settings. Different initial set distance values ​​(for opening the door) and second set distance values ​​(for closing the door) can be preset in the control program to adapt to different refrigerator structures and usage scenarios.

[0068] After drawer 1 is opened to the end point, when the user pushes drawer 1 to close, the control program detects through detector 8 that the travel distance of drawer 1 has not reached the zero point (initial closed position). The drive shaft of driver 2 rotates counterclockwise to generate a current signal. The control program judges this as a human indication signal for the refrigerator to close, and driver 2 drives drawer 1 to close automatically.

[0069] Door opening protection: During the refrigerator door opening process, if the control program detects through detector 8 that the travel distance of drawer 1 has not reached the end point (open the designated position), but the working current of drive 2 reaches 30% or more of the stall current, the control program judges that the drawer 2 is blocked from pushing out, and drive 2 drives drawer 1 to close automatically.

[0070] Door closing protection: During the refrigerator door closing process, if the control program detects through detector 8 that the transmission distance of drawer 1 has not reached zero point (initial closed position), but the operating current of drive 2 reaches 30% or more of the stall current, the control program judges that drawer 1 is blocked from closing. After drive 2 stops, drive 2 drives drawer 1 to open automatically.

[0071] In this embodiment, the operating current of the driver 2 is detected by the control detection circuit, and a current signal is generated and transmitted to the control program MCU.

[0072] The control and detection circuit is configured according to the needs of those skilled in the art. The control and detection circuit includes a current acquisition module, and a motor stall current detection circuit disclosed in Chinese Patent No. CN106169735A can be found. Therefore, it will not be discussed in detail here.

[0073] In this embodiment, the fully automatic door opening and closing system for the vehicle refrigerator can be applied not only to new energy vehicles but also to gasoline vehicles.

[0074] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic door opening and closing system for a new energy vehicle refrigerator, characterized in that: The automatic door opening and closing control method of the fully automatic door opening and closing system for new energy vehicle refrigerators is as follows: Step 1: After the vehicle refrigerator is powered on, the control program outputs instructions and checks whether the refrigerator door is in the initial closed position; Step 2: The control program outputs an open or close command based on the user's operation to control the driver (2) to move the refrigerator door to the open specified position or the initial closed position; Step 3: According to the output opening command, if the refrigerator door is blocked during the opening process, the control program will trigger the door opening protection and output a closing command to make the refrigerator door close. Alternatively, when the refrigerator door is opened and reaches the designated open position, the control program receives a signal to push the door to close and outputs a closing command to make the refrigerator door close. Step 4: The control program outputs a closing command. When the refrigerator door is obstructed from closing, the control program's door closing protection is triggered. The control program then outputs an opening command to make the refrigerator door open. In step one, after the refrigerator is powered on, the current signal generated by the reverse motion of the drive shaft of the driver (2) is fed back to the control program. The control program identifies whether the refrigerator door is in the initial closed position based on the current signal.

2. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: The detector (8) detects and records the number of rotations of the drive shaft of the driver (2) and feeds it back to the control program. The control program receives the number of rotations of the drive shaft of the driver (2) and converts it into the distance that the driver (2) drives and transmits the movement of the refrigerator door. The detector (8) includes a Hall sensor or an encoder.

3. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: In step two, the output speed of the drive shaft of the driver (2) is set by the control program to adjust the opening and closing speed of the refrigerator door. In step three and / or step four, when the control program activates the door opening protection and / or door closing protection, the control program controls the alarm module to activate the alarm protection prompt.

4. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: In step two, the control program controls the drive shaft of the driver (2) to rotate in the forward direction to drive the refrigerator door to open. By converting the number of rotations of the drive shaft of the driver (2) with the distance the refrigerator door moves when it opens, the drive shaft of the driver (2) stops rotating when the distance converted from the number of rotations of the drive shaft of the driver (2) reaches the first set distance value of the control program.

5. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: In step two, the control program controls the drive shaft of the driver (2) to rotate in the opposite direction to drive the refrigerator door to close. By converting the number of rotations of the drive shaft of the driver (2) with the distance of the refrigerator door closing movement, when the distance converted from the number of rotations of the drive shaft of the driver (2) reaches the second set distance value of the control program, the drive shaft of the driver (2) stops rotating.

6. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: In step three, the refrigerator door opens and moves to the designated open position. When the refrigerator door is closed by hand, and the control program detects that the refrigerator door has not reached the initial closed position, the drive shaft of the driver (2) rotates in the opposite direction when the refrigerator door is closed by hand and generates a current signal that is fed back to the control program. The control program receives the current signal and judges it as a signal to push the door to close. The control program outputs a closing command, and the driver (2) starts and drives the refrigerator door to close automatically.

7. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: In step three, during the opening of the refrigerator door, the control program detects that the refrigerator door has not reached the designated opening position, and the control program detects and receives the current signal generated by the drive shaft of the driver (2); If the control program determines that the refrigerator door is blocked from opening based on the current signal generated by the drive shaft of the driver (2), the opening protection of the control program is triggered, the control program outputs the closing command, the driver (2) starts and drives the refrigerator door to close automatically.

8. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: In step four, during the closing process of the refrigerator door, the control program detects that the refrigerator door has not reached the initial closed position, and the control program detects and receives the current signal generated by the drive shaft of the driver (2); If the control program determines that the refrigerator door is blocked from closing based on the current signal generated by the drive shaft of the driver (2), the door closing protection of the control program will be triggered, the driver (2) will stop moving, and the driver (2) will start again and drive the refrigerator door to open automatically after the control program outputs the door closing command.

9. The fully automatic door opening and closing system for a new energy vehicle refrigerator according to claim 1, characterized in that: Users can select the refrigerator door to open and close via the operating module set on the vehicle refrigerator; Alternatively, users can remotely select the refrigerator door to open and close.

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