Automatic charging port cover driving device and vehicle

Abstract

The utility model discloses an automatic charging port cover driving device and a vehicle, the automatic charging port cover driving device comprises a voltage conversion communication assembly, a control module, a driving module, a motor and an automatic charging port cover which are connected in sequence; wherein the voltage conversion communication assembly is used for converting a first power supply into a second power supply to supply power to the control module, and forwarding an automatic charging port cover control instruction issued by the whole vehicle to the control module; the control module is used for receiving an automatic charging port cover control instruction and sending an automatic charging port cover driving signal; the driving module is used for driving the motor to operate according to the automatic charging port cover driving signal so as to drive the automatic charging port cover to rotate. The anti-pinch device is low in cost and simple in structure, and can realize the anti-pinch function of the automatic charging port cover.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an automatic charging port cover driving device and a vehicle. Background Art

[0002] With the development of new energy vehicles and intelligent driving vehicles, the charging port cover is gradually developing from a single mechanical structure to a direction integrating electronic control technology. The introduction of electronic control technology into the charging port cover brings certain convenience and improves the user experience, so the automatically driven charging port cover by a motor is more adopted in the design. However, the current control device of the automatic charging port cover has a complex structure, and the position information needs to be determined during the control process of the automatic charging port cover. The current position detection method is to use a Hall sensor for detection. Since the cost of the Hall sensor is relatively high, the design cost of the automatic charging port cover control device will be increased, and the anti-pinch function cannot be realized in the related art of the automatic charging port cover control device. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, the first object of the utility model is to provide an automatic charging port cover driving device, which has low cost, simple structure and can realize the anti-pinch function.

[0004] The second object of the utility model is to provide a vehicle.

[0005] To achieve the above object, the utility model is realized by the following technical solutions:

[0006] An automatic charging port cover driving device includes:

[0007] A voltage conversion and communication component, configured to convert a first power supply into a second power supply to supply power to the control module, and forward an automatic charging port cover control instruction sent by the whole vehicle to the control module;

[0008] The control module is connected to the voltage conversion and communication component, and is configured to receive the automatic charging port cover control instruction and send an automatic charging port cover driving signal;

[0009] A driving module is connected to the control module, and is configured to drive the motor to operate according to the automatic charging port cover driving signal;

[0010] The motor and the automatic charging port cover, the motor is respectively connected to the driving module and the automatic charging port cover, and the motor is used to drive the automatic charging port cover to rotate.

[0011] Preferably, the device further includes:

[0012] A potentiometer is respectively connected to the motor and the control module. The rotating part of the potentiometer is connected to the rotating shaft of the motor. When the motor drives the rotating part to rotate, the potentiometer is used to convert and obtain a voltage value, so that the control module can obtain the rotation angle of the motor according to the voltage value, and obtain the position of the automatic charging port cover according to the rotation angle of the motor.

[0013] Preferably, the device further includes:

[0014] A stall current detection module is respectively connected to the motor and the control module. The stall current detection module is used to detect the working current of the motor, so that the control module can judge whether the automatic charging port cover is stalled according to the working current of the motor and the position of the automatic charging port cover, so as to realize the anti-pinch function.

[0015] Preferably, the control module is a single-chip microcomputer of model R5F10BBF.

[0016] Preferably, the voltage conversion and communication component is a chip of model TJA1028TK.

[0017] Preferably, the first pin of the voltage conversion and communication component is connected to the output terminal of the first power supply; the fourth pin of the voltage conversion and communication component is connected to the vehicle controller through the LIN bus for receiving the control instruction of the automatic charging port cover; the fifth pin and the sixth pin of the voltage conversion and communication component are respectively connected to the nineteenth pin and the twentieth pin of the control module for forwarding the control instruction of the automatic charging port cover.

[0018] Preferably, the drive module is a chip of model TMI8460. The first pin and the second pin of the drive module are respectively connected to the twenty-second and twenty-first pins of the control module for receiving the drive signal of the automatic charging port cover; the seventh pin and the eighth pin of the drive module are connected, the fifth pin and the sixth pin of the drive module are connected, the eighth pin of the drive module is connected to the positive terminal of the motor, and the fifth pin of the drive module is connected to the negative terminal of the motor.

[0019] Preferably, the potentiometer is a rotary sensor of model RDC501051A.

[0020] Preferably, the first pin of the potentiometer is grounded, the second pin of the potentiometer is connected to the twenty-ninth pin of the control module for sending the voltage value; the third pin of the potentiometer is connected to the twenty-third pin of the control module for receiving the high-level signal sent by the control module to supply power to the potentiometer.

[0021] To achieve the above object, the second aspect of the present invention provides a vehicle, including the automatic charging port cover driving device described above.

[0022] The utility model has at least the following technical effects:

[0023] 1. The utility model provides an automatic charging port cover driving device, which includes a voltage conversion communication component, a control module, a driving module, a motor and an automatic charging port cover. Among them, the voltage conversion communication component can receive the automatic charging port cover control instruction sent by the whole vehicle through the LIN bus and forward it to the control module through the serial port. After receiving the automatic charging port cover control instruction, the control module issues an automatic charging port cover driving signal to control the driving module to drive the motor to operate, thereby driving the automatic charging port cover to rotate. This device has the advantage of simple structure in the control of the automatic charging port cover. Among them, the voltage conversion communication component can also realize the voltage conversion function to supply power to the control module, without other voltage conversion circuits, which can further simplify the device structure.

[0024] 2. The automatic charging port cover driving device of the utility model can convert the rotation angle of the motor into a voltage value through a potentiometer, and the rotation angle of the motor corresponds one-to-one with the position of the automatic charging port cover. Under the condition of advance test calibration, the one-to-one correspondence relationship among the voltage value, the rotation angle of the motor and the position of the automatic charging port cover can be used to determine the position of the automatic charging port cover through the voltage value output by the potentiometer. Since the potentiometer is cheaper than the Hall sensor, this device has the advantage of low cost.

[0025] 3. The automatic charging port cover driving device of the utility model detects the working current of the motor through a stall current detection module, so as to judge whether the automatic charging port cover is stalled through the working current of the motor and the position of the automatic charging port cover. If it is stalled, it can be determined that the automatic charging port cover is clamped by an obstacle, which is convenient for the user to timely find that the automatic charging port cover is clamped, and then realize the anti-clamping function.

[0026] The additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the utility model. Description of the Drawings

[0027] Figure 1 It is a structural block diagram of the automatic charging port cover driving device according to an embodiment of the utility model.

[0028] Figure 2 It is a schematic diagram of the peripheral circuit of the control module according to an embodiment of the utility model.

[0029] Figure 3 It is a schematic diagram of the peripheral circuit of the voltage conversion communication component according to an embodiment of the utility model.

[0030] Figure 4 It is a schematic diagram of the filter circuit according to an embodiment of the utility model.

[0031] Figure 5Schematic diagram of the peripheral circuit of the drive module according to an embodiment of the present utility model.

[0032] Figure 6 Block diagram of the structure of the automatic charging port cover drive device according to another embodiment of the present utility model.

[0033] Figure 7 Schematic diagram of the peripheral circuit structure of the potentiometer according to an embodiment of the present utility model.

[0034] Figure 8 Block diagram of the structure of the vehicle according to an embodiment of the present utility model. Detailed implementation manners

[0035] The following details this embodiment. The examples of the embodiment are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0036] The following describes an automatic charging port cover drive device and a vehicle according to this embodiment with reference to the drawings.

[0037] Figure 1 Block diagram of the structure of the automatic charging port cover drive device according to an embodiment of the present utility model. As Figure 1 shown, the automatic charging port cover drive device 100 includes a voltage conversion and communication component 10, a control module 20, a drive module 30, a motor 40, and an automatic charging port cover 50 that are connected in sequence.

[0038] In this embodiment, the voltage conversion and communication component 10 can convert the first power supply, i.e., the 12V power supply, into the second power supply, i.e., the 5V power supply, to supply power to the control module 20, and forward the automatic charging port cover control instruction issued by the whole vehicle, such as the vehicle controller, to the control module 20. After receiving the automatic charging port cover control instruction, the control module 20 issues an automatic charging port cover drive signal to the drive module 30. The drive module 30 drives the motor 40 to operate according to the automatic charging port cover drive signal, thereby driving the automatic charging port cover 50 to rotate. Thus, the drive control of the automatic charging port cover 50 can be realized.

[0039] For example, when the user presses the opening button for opening the automatic charging port cover 50, the vehicle controller will receive the automatic charging port cover opening instruction, and then issue the automatic charging port cover opening instruction to the control module 20. Then, the control module 20 can realize the drive control of the automatic charging port cover 50 through the drive module 30 and the motor 40. Thus, this device has the advantage of simple structure in the control of the automatic charging port cover 20. In addition, the voltage conversion and communication component 10 can also realize the voltage conversion function to supply power to the control module 20, without other voltage conversion circuits, which can further simplify the device structure.

[0040] It should be noted that the above content is used to describe the communication process between modules, so as to more clearly describe the connection relationship between modules in the device and the device structure. Among them, the methods such as issuing the automatic charging port cover control instruction and sending out the automatic charging port cover driving signal are prior art.

[0041] In this embodiment, the control module 20 is a single-chip microcomputer of the R5F10BBF model, the voltage conversion communication component 10 is a chip of the TJA1028TK model, and the driving module 30 is a chip of the TMI8460 model.

[0042] Figure 2 It is a schematic diagram of the peripheral circuit of the control module in the embodiment of the present invention. Figure 3 It is a schematic diagram of the peripheral circuit of the voltage conversion communication component in the embodiment of the present invention. Figure 4 It is a schematic diagram of the filter circuit in the embodiment of the present invention. Figure 5 It is a schematic diagram of the peripheral circuit of the driving module in the embodiment of the present invention.

[0043] As Figure 2 and 3 shown, the first pin of the voltage conversion communication component 10 is connected to the output terminal of the first power supply, that is, the B+ terminal of the 12V power supply. The B+ terminal outputs 12V voltage. After being filtered by capacitors C3 and C4 and then clamped by the transient voltage suppressor D2, the clutter pulse signals in the 12V voltage signal output from the B+ terminal are filtered out to obtain 12V voltage, which supplies power to the Figure 5 driving module 30 therein. And after the 12V voltage is converted into 5V voltage by the voltage conversion communication component 10, it is output through its eighth pin, that is, the Vcc pin, and then supplies power to the Figure 2 control module 10 therein. Figure 3 The fourth pin of the voltage conversion communication component 10 in Figure 2 is connected to the vehicle controller through the LIN bus for receiving the automatic charging port cover control instruction. The fifth pin and the sixth pin of the voltage conversion communication component 10, that is, the RX terminal and the TX terminal, are respectively connected to the nineteenth pin and the twentieth pin of the Figure 2 control module 20 therein. After the voltage conversion communication component 10 receives the automatic charging port cover control instruction through the LIN bus, it forwards the automatic charging port cover control instruction to the control module 20 through the RX terminal and the TX terminal, that is, the serial port.

[0044] As Figure 5 shown, the first pin and the second pin of the driving module 30 are respectively connected to the twenty-second and twenty-first pins of the control module 20 through the filter circuit for receiving the automatic charging port cover driving signal; the seventh pin and the eighth pin of the driving module 30 are connected, the fifth pin and the sixth pin of the driving module 30 are connected, the eighth pin of the driving module 30 is connected to the positive terminal of the motor 40, and the fifth pin of the driving module 30 is connected to the negative terminal of the motor 40.

[0045] Specifically, as Figure 2 shown, after the control module 20 receives the automatic charging port cover control instruction, it sends the DRV_OUT2 and DRV_OUT1 automatic charging port cover drive signals through the 22nd and 21st pins. This signal passes through Figure 4 the RC filter circuit and outputs to Figure 5 the IN2 and IN1 pins of the drive module 30 in it. Then, through the output of the drive module 30, a motor drive signal is obtained, where the M+ terminal and the M- terminal are connected to the positive and negative terminals of the motor 40. The drive module 30 can output high level or low level to the positive and negative terminals of the motor 40 respectively to control the forward or reverse rotation of the motor 40. For example, when the positive terminal of the motor 40 is connected to high level and the negative terminal is connected to low level, the motor 40 rotates forward at this time; when the positive terminal of the motor 40 is connected to low level and the negative terminal is connected to high level, the motor 40 rotates in reverse at this time.

[0046] In this embodiment, the two logic input terminals of the drive module 30, namely the IN2 and IN1 pins, serve as the inputs of the PWM (pulse width modulation) control mode, which can control the current direction through the internal h-bridge, and thus can control the rotation direction of the motor 40.

[0047] Figure 6 is the structural block diagram of the automatic charging port cover drive device according to another embodiment of the present utility model. As Figure 6 shown, the automatic charging port cover drive device 100 further includes a potentiometer 60. The potentiometer 60 is respectively connected to the motor 40 and the control module 20, and the rotating part of the potentiometer 60 is connected to the rotating shaft of the motor 40.

[0048] Among them, when the motor 40 drives the rotating part of the potentiometer 60 to rotate, the potentiometer 60 can convert to obtain a voltage value, so that the control module 20 can obtain the rotation angle of the motor 40 according to the voltage value, and can facilitate obtaining the position of the automatic charging port cover 50 according to the rotation angle of the motor 40.

[0049] Figure 7 is the schematic diagram of the peripheral circuit structure of the potentiometer according to the embodiment of the present utility model. As Figure 7 shown, the potentiometer 60 is a RDC501051A type rotary sensor. Figure 7 Only its circuit structure is shown in it, and its rotating part is not shown. Its connection method with the motor 40 is the prior art and will not be specifically described here.

[0050] As Figure 7As shown, the first pin of the potentiometer 60 is grounded, its second pin is connected to the 29th pin of the control module 20 through the resistor R6, and it can output the AD2 signal to the control module 20. The control module 20 can obtain the voltage value by analyzing the AD2 signal. The third pin of the potentiometer 60 is connected to the 23rd pin of the control module 20, that is, the potentiometer 60 receives the high-level signal RDC_OUT sent by the control module 20 through its third pin to supply power to itself.

[0051] Specifically, the control module 20 sends the RDC_OUT signal to supply power to the potentiometer 60. When the rotating shaft of the motor 40 drives the gear to rotate, it will drive the rotating part of the potentiometer 60 to rotate through the worm, and then drive the 2T end of the potentiometer 60 to slide. Since the resistance values of the 1T end and the 3T end are constant, when the 2T end slides, the resistance value between the 1T end and the 2T end changes. Since the supply voltage of the third pin of the potentiometer 60 is constant, the voltage value output by the second pin of the potentiometer 60 can be obtained through the voltage division principle.

[0052] It can be understood that the voltage value of the potentiometer 60, the rotation angle of the motor 40, and the position of the automatic charging port cover correspond one by one. Therefore, the corresponding relationship among the voltage value of the potentiometer 60, the rotation angle of the motor 40, and the position of the automatic charging port cover can be pre-tested and calibrated, and then stored in the control module 20. When the control module 20 obtains the AD2 signal output by the potentiometer 60, it can determine the position of the automatic charging port cover according to the analyzed voltage value and the corresponding relationship.

[0053] Since the rotation angle of the motor 40 corresponds to the position of the automatic charging port cover, it can be pre-calibrated that when the rotation angle of the motor 40 is A, the position of the automatic charging port cover is the open position, and when the rotation angle of the motor 40 is Z, the position of the automatic charging port cover is the closed position. When the automatic charging port cover 50 is stuck and is in a position between the open position and the closed position, the rotation angle of the motor 40 must be between A and Z, and the corresponding voltage is also within the corresponding range. Conversely, the control module 20 can determine that the automatic charging port cover 50 is in a position between the open position and the closed position according to the voltage value, so as to determine that the automatic charging port cover 50 is stuck, that is, the automatic charging port cover 50 is clamped by an obstacle.

[0054] To further determine whether the automatic charging port cover 50 is stuck, as Figure 6 shown, the device further includes a stall current detection module 70, which is respectively connected to the motor 40 and the control module 20. The stall current detection module 70 can be used to detect the working current of the motor.

[0055] In this embodiment, a stall threshold current can be set according to the peak value of the starting current of the motor 40. The advantage of this strategy is that it is not affected by external factors such as temperature and the degree of component aging. After the control module 20 detects the working current of the motor, it can compare it with the stall threshold current. If it is greater than the stall threshold current, it is determined that the automatic charging port cover 50 is stalled. Thus, the control module 20 can comprehensively judge whether the automatic charging port cover 50 is stalled based on the working current of the motor and the position of the automatic charging port cover 50, so as to facilitate the user to timely discover that the automatic charging port cover 50 is clamped, and then realize the anti-pinch function.

[0056] It should be noted that the methods of detecting, comparing and judging the working current of the motor are part of the prior art, and the method parts involved are not the improvement points of this application.

[0057] In this embodiment, when the automatic charging port cover 50 rotates to a position near the open or closed position, the control module 20 can control the drive module 30 to decelerate, which can protect the motor 40, gears and rotating shafts. Among them, if a stall occurs in the normal speed state, the control module 20 can control the drive module 30 to drive the motor 40 to rotate in the reverse direction, so that the automatic charging port cover 50 rotates in the reverse direction. If a stall occurs again, it immediately controls to stop rotating, and after a period of static, it controls the automatic charging port cover 50 to rotate forward at the normal speed state again. When the automatic charging port cover 50 is near the open or closed position and in the deceleration state, if a stall occurs, the control module 20 can immediately control the brake to stop.

[0058] For functional safety considerations, a function of stopping the brake is added before the state of the motor 40 changes, which can avoid reducing the life of the motor 40 due to excessive instantaneous current. For example, when the control module 20 determines that the automatic charging port cover 50 is stalled and controls the motor 40 to stop rotating, it can first control the motor 40 to enter a short-term braking state to release the electromotive force and protect the motor 40 and the mechanical structure.

[0059] In this embodiment, a rotation speed can also be specified, and then the angle of rotation of the automatic charging port cover 50 in the previous time slice period is recorded to determine the rotation speed of the automatic charging port cover 50 in the current period. If the rotation speed in the current period is greater than the specified rotation speed, deceleration processing is performed; if the rotation speed in the current period is less than the specified rotation speed, acceleration processing is performed, so as to realize the acceleration and deceleration control of the automatic charging port cover 50, and then protect the motor 40 and the mechanical structure and extend the service life of the components. Since the angle of rotation of the automatic charging port cover 50 can be determined by the voltage value output by the potentiometer 60, this function can be realized in the control module 20. It should be noted that the implementation method of this part is the prior art.

[0060] The device can sense the rotation angle of the motor 40 through the potentiometer 60, so as to facilitate the control module 20 to determine the rotation position and rotation state of the automatic charging port cover 50, facilitate the realization of more precise control of the automatic charging port cover 50, and further protect the components and improve the reliability of the product.

[0061] Furthermore, through this device, the present application enables the automatic charging port cover 50 to have functions such as opening and closing the cover, anti-pinch, pushing rotation, and controlling the rotation speed.

[0062] Figure 8 It is a structural block diagram of a vehicle according to an embodiment of the present utility model. As Figure 8 shown, the present utility model also provides a vehicle 1000, which includes the above-mentioned automatic charging port cover driving device 100.

[0063] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0064] Although the content of the present utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present utility model. After those skilled in the art have read the above content, various modifications and substitutions to the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims

1. An automatic charging port cover driving device, characterized in that, including a step-down communication component, configured to convert a first power supply into a second power supply to supply power to a control module, and forward an automatic charging port cover control instruction sent by the vehicle to the control module; the control module, connected to the step-down communication component, configured to receive the automatic charging port cover control instruction and send an automatic charging port cover driving signal; a driving module, connected to the control module, configured to drive a motor to operate according to the automatic charging port cover driving signal; the motor and the automatic charging port cover, the motor is respectively connected to the driving module and the automatic charging port cover, and the motor is configured to drive the automatic charging port cover to rotate.

2. The automatic charging port cover driving device according to claim 1, wherein Further included are: a potentiometer, respectively connected to the motor and the control module, a rotating part of the potentiometer is connected to a rotating shaft of the motor, and the potentiometer is configured to convert a voltage value when the motor drives the rotating part to rotate, so that the control module obtains a rotation angle of the motor according to the voltage value, and obtains a position of the automatic charging port cover according to the rotation angle of the motor.

3. The automatic charging port cover driving device according to claim 2, wherein, Further included are: a stall current detection module, respectively connected to the motor and the control module, and the stall current detection module is configured to detect a working current of the motor, so that the control module determines whether the automatic charging port cover is stalled according to the working current of the motor and the position of the automatic charging port cover, so as to implement an anti-pinch function.

4. The automatic charging port cover driving device according to claim 2, characterized in that, The control module is a single-chip microcomputer of model R5F10BBF.

5. The automatic charging port cover driving device according to claim 4, wherein The step-down communication component is a chip of model TJA1028TK.

6. The automatic charging port cover driving device according to claim 5, wherein, A first pin of the step-down communication component is connected to an output end of the first power supply; a fourth pin of the step-down communication component is connected to a vehicle controller through a LIN bus for receiving the automatic charging port cover control instruction; a fifth pin and a sixth pin of the step-down communication component are respectively connected to a nineteenth pin and a twentieth pin of the control module for forwarding the automatic charging port cover control instruction.

7. The automatic charging port cover driving device according to claim 4, wherein, The driving module is a chip of model TMI8460, a first pin and a second pin of the driving module are respectively connected to a twenty-second pin and a twenty-first pin of the control module for receiving the automatic charging port cover driving signal; a seventh pin and an eighth pin of the driving module are connected, a fifth pin and a sixth pin of the driving module are connected, an eighth pin of the driving module is connected to a positive terminal of the motor, and a fifth pin of the driving module is connected to a negative terminal of the motor.

8. The automatic charging port cover driving device according to claim 4, characterized in that, The potentiometer is a rotary sensor of model RDC501051A.

9. The automatic charging port cover driving device according to claim 8, wherein, A first pin of the potentiometer is grounded, a second pin of the potentiometer is connected to a twenty-ninth pin of the control module for sending the voltage value; a third pin of the potentiometer is connected to a twenty-third pin of the control module for receiving a high-level signal sent by the control module to supply power to the potentiometer.

10. A vehicle, characterized in that, An automatic charging port cover driving device according to any one of claims 1-9 is included.

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