Automobile trunk cover control circuit and automobile trunk cover

Abstract

The utility model provides an automobile trunk cover control circuit and an automobile trunk cover, and relates to the technical field of automobile accessories, the circuit comprises a power supply module, a signal detection module, a main control module and a driving module; the power supply module is electrically connected with the signal detection module, the main control module and the driving module respectively; the signal detection module is also electrically connected with the main control module; the main control module is also electrically connected with the driving module; the driving module is also electrically connected with the motor; the signal detection module is used for acquiring an instruction signal and sending a control signal to the main control module according to the instruction signal; the main control module is used for sending a driving signal to the driving module according to the control signal; and the driving module is used for controlling the motor to drive the automobile trunk cover to move according to the driving signal. Automatic opening and closing of the automobile trunk cover are achieved, and the user experience feeling is improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a control circuit for a car tailgate and a car tailgate. Background Technology

[0002] Currently, vehicles with an open-top cargo box behind the driver's cab require an external tailgate to close and seal the cargo box. Most car tailgates on the market are manual roller shutters, which rely on a pull cord to open and close. This process is cumbersome, and it is also inconvenient for users carrying goods to open the tailgate, resulting in a poor user experience. Utility Model Content

[0003] In view of the above, the purpose of this application is to overcome the shortcomings of the prior art and provide a car tailgate control circuit and a car tailgate. This application provides the following technical solution:

[0004] In a first aspect, this application provides a car tailgate control circuit, the circuit comprising: a power module, a signal detection module, a main control module and a drive module;

[0005] The power module is electrically connected to the signal detection module, the main control module and the drive module respectively;

[0006] The signal detection module is also electrically connected to the main control module;

[0007] The main control module is also electrically connected to the drive module;

[0008] The drive module is also electrically connected to the motor;

[0009] The signal detection module is used to acquire command signals and send control signals to the main control module according to the command signals;

[0010] The main control module is used to send a drive signal to the drive module according to the control signal;

[0011] The drive module is used to control the motor to drive the movement of the car tailgate according to the drive signal.

[0012] In one embodiment, the driving signal includes a first signal or a second signal, and the driving module includes a first switching transistor, a second switching transistor, a third switching transistor, and a fourth switching transistor;

[0013] The control terminal of the first switch is electrically connected to the main control module and the output terminal of the first switch, the input terminal of the first switch is electrically connected to the power module, and the output terminal of the first switch is also electrically connected to the input terminal of the second switch and the motor.

[0014] The control terminal of the second switch is electrically connected to the main control module and the output terminal of the second switch, and the output terminal of the second switch is also electrically connected to the output terminal of the fourth switch.

[0015] The control terminal of the third switch is electrically connected to the main control module and the output terminal of the third switch, the input terminal of the third switch is electrically connected to the power supply module, and the output terminal of the third switch is also electrically connected to the input terminal of the fourth switch and the motor.

[0016] The control terminal of the fourth switch is electrically connected to both the main control module and the output terminal of the fourth switch, and the output terminal of the fourth switch is also grounded.

[0017] The first switch and the fourth switch are used to receive the first signal and conduct to form a first current path to control the motor to drive the car tailgate to open.

[0018] The second and third switching transistors are used to receive the first signal and conduct to form a second current path to control the motor to drive the car tailgate to close.

[0019] The first switch, the second switch, the third switch, and the fourth switch are used to receive the second signal and turn it off to control the motor to stop driving the car tailgate.

[0020] In one embodiment, the circuit further includes Hall sensors, which are electrically connected to the main control module and the motor, respectively.

[0021] The Hall sensor is used to monitor the current motion state of the motor and generate a corresponding Hall signal; the Hall signal is then sent to the main control module.

[0022] In one embodiment, the circuit further includes multiple limit switches, each electrically connected to the main control module;

[0023] The plurality of limit switches are used to send a limit signal to the main control module when any one of the limit switches is closed;

[0024] The main control module is also used to send the second signal to the first switch, the second switch, the third switch and the fourth switch when it receives the limit signal.

[0025] In one embodiment, the command signal includes a capacitance change signal, and the signal detection module includes a fifth switch, a sixth switch, and a sensing device;

[0026] The input terminal of the fifth switch is electrically connected to the power module, the control terminal of the fifth switch is electrically connected to both the power module and the sensing device, and the output terminal of the fifth switch is electrically connected to the control terminal of the sixth switch.

[0027] The input terminal of the sixth switch is electrically connected to the main control module, and the output terminal and control terminal of the sixth switch are grounded respectively.

[0028] When the capacitance between the sensing device and the reference object changes, the fifth switch is used to acquire the capacitance change signal and turn on.

[0029] The sixth switch is configured to turn on when the fifth switch is turned on, so that the main control module can obtain the control signal.

[0030] In one embodiment, the instruction signal includes a first button signal or a second button signal, the control signal includes an on signal or an off signal, and the signal detection module includes multiple buttons, which are respectively electrically connected to or wirelessly communicated with the main control module.

[0031] The plurality of buttons are used to send an open signal to the main control module when the first button signal is detected;

[0032] When the second button signal is detected, a shutdown signal is sent to the main control module.

[0033] In one embodiment, the main control module includes a main control chip, which is electrically connected to the input terminals of the Hall sensor, the plurality of limit switches and the sixth switch transistor, respectively.

[0034] The main control chip is used to determine the current motion state of the motor based on the Hall signal when the control signal is received;

[0035] If the motion state is a stationary state, then the first signal is sent to the first switch and the fourth switch, or the first signal is sent to the second switch and the third switch.

[0036] If the motion state is forward or reverse, the second signal is sent to the first switch, the second switch, the third switch, and the fourth switch.

[0037] In one embodiment, the main control module includes a main control chip, which is electrically connected to the Hall sensor and the plurality of limit switches respectively, and is also electrically connected or wirelessly connected to the plurality of buttons;

[0038] The main control chip is used to determine the current motion state of the motor based on the Hall signal when the open signal is received;

[0039] If the current motion state is a stationary state, then the first signal is sent to the first switch and the fourth switch;

[0040] If the current motion state is forward or reverse, then the second signal is sent to the first switch, the second switch, the third switch, and the fourth switch, respectively.

[0041] In one embodiment, the main control chip is further configured to determine the current motion state of the motor based on the Hall signal when the main control module receives the shutdown signal;

[0042] If the current motion state is a stationary state, then the first signal is sent to the second switch and the third switch;

[0043] If the current motion state is forward or reverse, then the second signal is sent to the first switch, the second switch, the third switch, and the fourth switch, respectively.

[0044] Secondly, this application provides a car tailgate, including the car tailgate control circuit described in the first aspect.

[0045] This application provides a car tailgate control circuit and a car tailgate. The circuit includes a power module, a signal detection module, a main control module, and a drive module. The power module is electrically connected to the signal detection module, the main control module, and the drive module. The signal detection module is also electrically connected to the main control module. The main control module is also electrically connected to the drive module. The drive module is also electrically connected to a motor. The signal detection module is used to acquire command signals and send control signals to the main control module according to the command signals. The main control module is used to send drive signals to the drive module according to the control signals. The drive module is used to control the motor to drive the movement of the car tailgate according to the drive signals. This application detects command signals through the signal detection module and controls the motor to open or close the car tailgate through the main control module and the drive module, realizing the automatic opening and closing of the car tailgate and improving user comfort.

[0046] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic diagram of a vehicle tailgate control circuit provided in an embodiment of this application is shown.

[0049] Figure 2 A circuit diagram of a driving module provided in an embodiment of this application is shown;

[0050] Figure 3 This paper shows another structural schematic diagram of the automobile tailgate control circuit provided in an embodiment of the present application;

[0051] Figure 4 A circuit diagram of a signal detection module provided in an embodiment of this application is shown.

[0052] Explanation of key component symbols:

[0053] 100 - Car tailgate control circuit; 110 - Power supply module; 120 - Signal detection module; 130 - Main control module; 140 - Drive module; 150 - Hall sensor; 160 - Multiple limit switches; 200 - Motor. Detailed Implementation

[0054] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0057] Example 1

[0058] This application provides a car tailgate control circuit; please refer to [link / reference]. Figure 1 The vehicle tailgate control circuit 100 includes: a power module 110, a signal detection module 120, a main control module 130, and a drive module 140;

[0059] The power module 110 is electrically connected to the signal detection module 120, the main control module 130 and the drive module 140 respectively;

[0060] The signal detection module 120 is also electrically connected to the main control module 130;

[0061] The main control module 130 is also electrically connected to the drive module 140;

[0062] The drive module 140 is also electrically connected to the motor 200;

[0063] The signal detection module 120 is used to acquire command signals and send control signals to the main control module 130 according to the command signals;

[0064] The main control module 130 is used to send a drive signal to the drive module 140 according to the control signal;

[0065] The drive module 140 is used to control the motor 200 to drive the movement of the car tailgate according to the drive signal.

[0066] Most existing car trunk lids rely on manual operation to open or close via a pull cord. This process is cumbersome, and it is not convenient to open or close the trunk lid when the user's hands are occupied.

[0067] In this embodiment, the signal detection module 120 monitors the command signal and sends a corresponding control signal to the main control module 130 according to the command signal. The main control module 130 sends a drive signal to the drive module 140 according to the current opening or closing status of the car tailgate, in combination with the control signal, so as to drive the motor 200 to drive the car tailgate to open, close or stop moving, thereby realizing the automatic opening and closing of the car tailgate.

[0068] In one implementation, please refer to Figure 2The driving signal includes a first signal or a second signal, and the driving module 140 includes a first switch Q1, a second switch Q2, a third switch Q3 and a fourth switch Q4;

[0069] The control terminal of the first switch Q1 is electrically connected to the main control module 130 and the output terminal of the first switch Q1, the input terminal of the first switch Q1 is electrically connected to the power module 110, and the output terminal of the first switch Q1 is also electrically connected to the input terminal of the second switch Q2 and the motor 200.

[0070] The control terminal of the second switch Q2 is electrically connected to the main control module 130 and the output terminal of the second switch Q2, and the output terminal of the second switch Q2 is also electrically connected to the output terminal of the fourth switch Q4.

[0071] The control terminal of the third switch Q3 is electrically connected to the main control module 130 and the output terminal of the third switch Q3, the input terminal of the third switch Q3 is electrically connected to the power module 110, and the output terminal of the third switch Q3 is also electrically connected to the input terminal of the fourth switch Q4 and the motor 200.

[0072] The control terminal of the fourth switch Q4 is electrically connected to the main control module 130 and the output terminal of the fourth switch Q4, and the output terminal of the fourth switch Q4 is also grounded.

[0073] The first switch Q1 and the fourth switch Q4 are used to receive the first signal and conduct to form a first current path to control the motor 200 to drive the car tailgate to open.

[0074] The second switch Q2 and the third switch Q3 are used to receive the first signal and turn on to form a second current path to control the motor 200 to drive the car tailgate to close.

[0075] The first switch Q1, the second switch Q2, the third switch Q3, and the fourth switch Q4 are used to receive the second signal and turn it off to control the motor 200 to stop driving the car tailgate.

[0076] In this embodiment, the driving signal includes multiple first signals or multiple second signals, wherein the first signal is high level and the second signal is low level. The first switch Q1, second switch Q2, third switch Q3, and fourth switch Q4 are all NMOS transistors. When the first switch Q1 and fourth switch Q4 receive a high-level signal, they conduct. At this time, the current input to the power module 110 flows sequentially through the first switch Q1, the motor 200, and the fourth switch Q4 to ground. The current direction is defined as positive, and the motor 200 rotates forward, causing the car's tailgate to open. When the second switch Q2 and third switch Q3 receive a high-level signal, they conduct. At this time, the input current to the power module 110 flows sequentially through the third switch Q3, the motor 200, and the second switch Q4 to ground. The current direction is defined as negative, and the motor 200 rotates in reverse, causing the car's tailgate to close. When the first switch Q1, second switch Q2, third switch Q3, and fourth switch Q4 receive a low-level signal, they turn off. At this time, the current does not flow through the motor 200, and the motor 200 stops rotating. It should be noted that, in the initial state, the first switch Q1, the second switch Q2, the third switch Q3, and the fourth switch Q4 are all in the off state.

[0077] Furthermore, after the resistor R and diode D are connected in parallel, they are connected in series between the control terminal of each switching transistor and the main control module 130. A resistor R is also connected in series between the control terminal and the output terminal of each switching transistor. After the two inductors L are connected in parallel, they are connected in series between the output terminal of the fourth switching transistor Q4 and ground.

[0078] In one implementation, please refer to Figure 3 The car tailgate control circuit 100 also includes a Hall sensor 150, which is electrically connected to the main control module 130 and the motor 200 respectively; the Hall sensor 150 is used to monitor the current motion state of the motor 200 and generate a corresponding Hall signal; and send the Hall signal to the main control module 130.

[0079] In this embodiment, the main control module 130 determines the motion state of the car trunk lid by combining the Hall signal sent by the Hall sensor 150. The motion state of the car trunk lid includes being open, closed, or stationary. Based on the current motion state of the car trunk lid and the control signal sent by the signal detection module 120, a first signal is sent to the first switch Q1 and the fourth switch Q4, or a first signal is sent to the second switch Q2 and the third switch, or a second signal is sent to the first switch Q1, the second switch Q2, the third switch Q3, and the fourth switch Q4.

[0080] It should be noted that the movement state of the motor 200 includes a stationary state, forward rotation, or reverse rotation. Furthermore, the car tailgate control circuit 100 also includes an indicator element, such as an indicator light. The indicator element is electrically connected to the motor 200 and the main control module 130 respectively. When the motor 200 is stationary, the indicator light is off, and when the motor 200 rotates forward or in reverse, the indicator light is on.

[0081] In one implementation, please refer again Figure 3 The vehicle tailgate control circuit 100 also includes a plurality of limit switches 160, which are electrically connected to the main control module 130 respectively. The plurality of limit switches 160 are used to send a limit signal to the main control module 130 when any one of the limit switches is closed. The main control module 130 is also used to send the second signal to the first switch Q1, the second switch Q2, the third switch Q3 and the fourth switch Q4 when it receives the limit signal.

[0082] In this embodiment, the multiple limit switches 160 include a first left limit switch, a second left limit switch, a first right limit switch, and a second right limit switch. Specifically, the first left limit switch and the second left limit switch are respectively disposed at the left and right ends of a first preset position of the trunk lid, and are used to send a limit signal to the main control module 130 when the trunk lid is opened to the first preset position. The first right limit switch and the second right limit switch are respectively disposed at the left and right ends of a second preset position of the trunk lid, and are used to send a limit signal to the main control module 130 when the trunk lid is closed to the second preset position. The first preset position is the position when the trunk lid is fully closed, and the second preset position is the position when the trunk lid is fully open.

[0083] In one implementation, please refer to Figure 4 The command signal includes a capacitance change signal, and the signal detection module 120 includes a fifth switch Q5, a sixth switch Q6, and a sensing device.

[0084] The input terminal of the fifth switch Q5 is electrically connected to the power module 110, the control terminal of the fifth switch Q5 is electrically connected to the power module 110 and the sensing device respectively, and the output terminal of the fifth switch Q5 is electrically connected to the control terminal of the sixth switch Q6.

[0085] The input terminal of the sixth switch Q6 is electrically connected to the main control module 130, and the output terminal and control terminal of the sixth switch Q6 are grounded respectively.

[0086] When the capacitance between the sensing device and the reference object changes, the fifth switch Q5 is used to acquire the capacitance change signal and turn on.

[0087] The sixth switch Q6 is used to turn on when the fifth switch Q5 is turned on, so that the main control module 130 can obtain the control signal.

[0088] In this embodiment, when the capacitance between the sensing device and the reference object, such as the ground, changes, the control terminal of the fifth switch Q5 receives a capacitance change signal, such as a high-level signal. At this time, the fifth switch Q5 is turned on, and the control terminal of the sixth switch Q6 obtains a high level and is turned on. At this time, the main control module 130 obtains a control signal, namely a low-level signal.

[0089] For example, when the sensor detects a user's kicking action, the capacitance between the sensor and the ground changes. At this time, the fifth switch Q5 receives the capacitance change signal, i.e., the kick signal. The fifth switch Q5 and the sixth switch Q6 are then turned on in sequence, and the main control module 130 receives a low-level signal. It should be noted that the fifth switch Q5 and the sixth switch Q6 are transistors.

[0090] Furthermore, an inductor is provided between the input and control terminals of the fifth switch Q5. The control terminal of the fifth switch Q5 is connected in series with an inductor and a diode and then electrically connected to the sensing device. Two inductors are also connected in series between the output terminal of the fifth switch Q5 and the control terminal of the sixth switch Q6. A capacitor is also provided between the node between the two inductors and ground. An inductor is also connected in series between the control terminal and the output terminal of the sixth switch Q6.

[0091] In one embodiment, the main control module 130 includes a main control chip, which is electrically connected to the input terminals of the Hall sensor 150, the plurality of limit switches 160 and the sixth switch Q6, respectively.

[0092] The main control chip is used to determine the current motion state of the motor 200 based on the Hall signal when the control signal is received;

[0093] If the current motion state is a stationary state, then the first signal is sent to the first switch Q1 and the fourth switch Q4, or the first signal is sent to the second switch Q2 and the third switch Q3;

[0094] If the current motion state is forward or reverse, the second signal is sent to the first switch Q1, the second switch Q2, the third switch Q3 and the fourth switch Q4.

[0095] In this embodiment, the main control chip is a microcontroller unit (MCU). In other embodiments, the main control chip may also be selected from other types of processing units depending on the actual situation, and no restrictions are imposed here.

[0096] After the sixth switch Q6 is turned on, the main control module 130 receives a low-level signal, i.e., a control signal. Based on the Hall signal sent by the Hall sensor 150, it determines the current motion state of the motor 200. If the current motion state is stationary, it sends a first signal, i.e., a high-level signal, to the first switch Q1 and the fourth switch Q4 to turn on. The current input from the power module 110 flows through the motor 200 through the first path, controlling the motor 200 to rotate forward and opening the car tailgate. Alternatively, it sends the first signal to the second switch Q2 and the third switch Q3 to turn on. The current input from the power module 110 flows through the motor 200 through the second path, controlling the motor 200 to rotate in reverse and opening the car tailgate.

[0097] If the current motion state is forward or reverse, a second signal, i.e., a low-level signal, is sent to the first switch Q1, the second switch Q2, the third switch Q3, and the fourth switch Q4. At this time, current does not flow through the motor 200, and the motor 200 stops driving. Thus, by setting up a sensing device to obtain command signals, the motor 200 is controlled to drive the car tailgate to open, close, or stop, realizing convenient opening and closing of the car tailgate and improving the user experience.

[0098] For example, when the sensor detects a user's kicking motion, if the trunk lid is stationary at that time, the trunk lid will be opened or closed; if the trunk lid is being opened, the trunk lid will be stopped from opening or closing.

[0099] In one embodiment, the instruction signal includes a first button signal or a second button signal, the control signal includes an on signal or an off signal, and the signal detection module 120 includes multiple buttons, which are electrically connected to or wirelessly communicated with the main control module 130, respectively.

[0100] The plurality of buttons are used to send an open signal to the main control module 130 when the first button signal is detected;

[0101] When the second button signal is detected, a shutdown signal is sent to the main control module 130.

[0102] In this embodiment, the multiple buttons include an open button and a close button. When the open button is pressed, the main control module 130 receives an open signal, and when the close button is pressed, the main control module 130 receives a close signal.

[0103] Furthermore, the multiple buttons also include a lighting button and a lock button. When the lighting button is pressed, the main control module 130 sends a lighting state switching signal to the indicator light. The lighting state switching signal is used to control the indicator light to turn off if the indicator light is in the on state, and to control the indicator light to turn on if the indicator light is in the off state.

[0104] In one embodiment, the main control module 130 includes a main control chip, which is electrically connected to the Hall sensor 150 and the plurality of limit switches 160 respectively. The main control chip is also electrically connected or wirelessly communicated with the plurality of buttons.

[0105] The main control chip is used to determine the current motion state of the motor 200 based on the Hall signal when the open signal is received;

[0106] If the current motion state is a stationary state, then the first signal is sent to the first switch Q1 and the fourth switch Q4;

[0107] If the current motion state is forward or reverse, the second signal is sent to the first switch Q1, the second switch Q2, the third switch Q3 and the fourth switch Q4 respectively.

[0108] In this embodiment, if the current motion state of the motor 200 is stationary, the main control chip controls the car trunk lid to open; if the current motion state of the motor 200 is forward or reverse, it indicates that the motion state of the car trunk lid is in the process of opening or closing, and at this time, the main control chip controls the car trunk lid to stop opening or closing.

[0109] In one embodiment, the main control chip is further configured to determine the current motion state of the motor 200 based on the Hall signal when the main control module 130 receives the shutdown signal;

[0110] If the current motion state is a stationary state, then the first signal is sent to the second switch Q2 and the third switch Q3;

[0111] If the current motion state is forward or reverse, the second signal is sent to the first switch Q1, the second switch Q2, the third switch Q3 and the fourth switch Q4 respectively.

[0112] In this embodiment, if the current motion state of the motor 200 is stationary, the main control chip controls the car tailgate to close; if the current motion state of the motor 200 is forward or reverse, it indicates that the motion state of the car tailgate is open or closed, and at this time, the main control chip controls the car tailgate to stop opening or closing.

[0113] The vehicle tailgate control circuit provided in this application includes a power module, a signal detection module, a main control module, and a drive module. The power module is electrically connected to the signal detection module, the main control module, and the drive module. The signal detection module is also electrically connected to the main control module. The main control module is also electrically connected to the drive module. The drive module is also electrically connected to a motor. The signal detection module is used to acquire command signals and send control signals to the main control module according to the command signals. The main control module is used to send drive signals to the drive module according to the control signals. The drive module is used to control the motor to drive the movement of the vehicle tailgate according to the drive signals. This application detects command signals through the signal detection module and controls the motor to open or close the vehicle tailgate through the main control module and the drive module, realizing the automatic opening and closing of the vehicle tailgate and improving user comfort.

[0114] Example 2

[0115] Furthermore, this application also provides a car tailgate, including the car tailgate control circuit described in the first aspect.

[0116] The trunk lid provided in this application embodiment can realize the function of the trunk lid control circuit provided in embodiment 1. To avoid repetition, it will not be described again here.

[0117] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0118] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0119] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A control circuit for a car trunk lid, characterized in that, The circuit includes: a power supply module, a signal detection module, a main control module, and a drive module; The power module is electrically connected to the signal detection module, the main control module and the drive module respectively; The signal detection module is also electrically connected to the main control module; The main control module is also electrically connected to the drive module; The drive module is also electrically connected to the motor; The signal detection module is used to acquire command signals and send control signals to the main control module according to the command signals; The main control module is used to send a drive signal to the drive module according to the control signal; The drive module is used to control the motor to drive the movement of the car tailgate according to the drive signal; The driving signal includes a first signal or a second signal, and the driving module includes a first switching transistor, a second switching transistor, a third switching transistor, and a fourth switching transistor. The control terminal of the first switch is electrically connected to the main control module and the output terminal of the first switch, the input terminal of the first switch is electrically connected to the power module, and the output terminal of the first switch is also electrically connected to the input terminal of the second switch and the motor. The control terminal of the second switch is electrically connected to the main control module and the output terminal of the second switch, and the output terminal of the second switch is also electrically connected to the output terminal of the fourth switch. The control terminal of the third switch is electrically connected to the main control module and the output terminal of the third switch, the input terminal of the third switch is electrically connected to the power supply module, and the output terminal of the third switch is also electrically connected to the input terminal of the fourth switch and the motor. The control terminal of the fourth switch is electrically connected to both the main control module and the output terminal of the fourth switch, and the output terminal of the fourth switch is also grounded. The first switch and the fourth switch are used to receive the first signal and conduct to form a first current path to control the motor to drive the car tailgate to open. The second and third switching transistors are used to receive the first signal and conduct to form a second current path to control the motor to drive the car tailgate to close. The first switch, the second switch, the third switch, and the fourth switch are used to receive the second signal and turn it off to control the motor to stop driving the car tailgate.

2. The vehicle tailgate control circuit according to claim 1, characterized in that, The circuit also includes Hall sensors, which are electrically connected to the main control module and the motor, respectively. The Hall sensor is used to monitor the current motion state of the motor and generate a corresponding Hall signal; the Hall signal is then sent to the main control module.

3. The vehicle tailgate control circuit according to claim 2, characterized in that, The circuit also includes multiple limit switches, which are electrically connected to the main control module. The plurality of limit switches are used to send a limit signal to the main control module when any one of the limit switches is closed; The main control module is also used to send the second signal to the first switch, the second switch, the third switch and the fourth switch when it receives the limit signal.

4. The vehicle tailgate control circuit according to claim 3, characterized in that, The command signal includes a capacitance change signal, and the signal detection module includes a fifth switch, a sixth switch, and a sensing device. The input terminal of the fifth switch is electrically connected to the power module, the control terminal of the fifth switch is electrically connected to both the power module and the sensing device, and the output terminal of the fifth switch is electrically connected to the control terminal of the sixth switch. The input terminal of the sixth switch is electrically connected to the main control module, and the output terminal and control terminal of the sixth switch are grounded respectively. When the capacitance between the sensing device and the reference object changes, the fifth switch is used to acquire the capacitance change signal and turn on. The sixth switch is configured to turn on when the fifth switch is turned on, so that the main control module can obtain the control signal.

5. The vehicle tailgate control circuit according to claim 3, characterized in that, The instruction signal includes a first button signal or a second button signal, the control signal includes an open signal or an close signal, and the signal detection module includes multiple buttons, which are respectively electrically connected to or wirelessly communicated with the main control module. The plurality of buttons are used to send an open signal to the main control module when the first button signal is detected; When the second button signal is detected, a shutdown signal is sent to the main control module.

6. The vehicle tailgate control circuit according to claim 4, characterized in that, The main control module includes a main control chip, which is electrically connected to the input terminals of the Hall sensor, the multiple limit switches, and the sixth switch transistor. The main control chip is used to determine the current motion state of the motor based on the Hall signal when the control signal is received; If the motion state is a stationary state, then the first signal is sent to the first switch and the fourth switch, or the first signal is sent to the second switch and the third switch. If the motion state is forward or reverse, the second signal is sent to the first switch, the second switch, the third switch, and the fourth switch.

7. The vehicle tailgate control circuit according to claim 5, characterized in that, The main control module includes a main control chip, which is electrically connected to the Hall sensor and the multiple limit switches respectively. The main control chip is also electrically connected or wirelessly connected to the multiple buttons. The main control chip is used to determine the current motion state of the motor based on the Hall signal when the open signal is received; If the current motion state is a stationary state, then the first signal is sent to the first switch and the fourth switch; If the current motion state is forward or reverse, then the second signal is sent to the first switch, the second switch, the third switch, and the fourth switch, respectively.

8. The vehicle tailgate control circuit according to claim 7, characterized in that, The main control chip is also used to determine the current motion state of the motor based on the Hall signal when the main control module receives the shutdown signal; If the current motion state is a stationary state, then the first signal is sent to the second switch and the third switch; If the current motion state is forward or reverse, then the second signal is sent to the first switch, the second switch, the third switch, and the fourth switch, respectively.

9. A car tailgate, characterized in that, The vehicle tailgate control circuit includes any one of claims 1-8.

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