Automobile charging seat electronic lock driving method and related device
By controlling the closing timing of the switch tube in the electronic lock driving circuit of the car charging base, the rebound unlocking problem caused by the reverse electromotive force during the locking and unlocking of the electronic lock is solved, and higher charging safety is achieved.
Patent Information
- Application Number
- CN202311510963.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-13
- Publication Date
- 2025-05-13
AI Technical Summary
During the locking and unlocking process of the existing car charging base electronic lock, the reverse electromotive force generated by the rotor coil in the electronic lock causes the electronic lock to rebound and unlock, affecting charging safety.
By controlling the closing timing of the switch tube on the bridge arm in the electronic lock driving circuit, the third target switch tube is closed while opening the target switch tube, so that the reverse electromotive force generated by the rotor coil in the electronic lock is quickly released, preventing the electronic lock from rotating in the reverse direction to unlock.
It effectively prevents the rebound and unlocking of electronic locks due to reverse electromotive force, and improves charging safety.
Smart Images
Figure CN119992688A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a method for driving an electronic lock of a vehicle charging stand and a related device. Background Art
[0002] The current automobile industry is in a stage where new energy vehicles are booming and gradually replacing traditional fuel vehicles. The charging and discharging requirements and standards of new energy vehicles are also constantly improving. Home new energy vehicles are mostly charged by AC slow charging or pile-end fast charging, so the requirements for vehicle-end AC and DC charging seats are getting higher and higher.
[0003] There are many types of new energy vehicle charging stations on the market, and each supplier has its own technical characteristics. The solutions of charging stations are similar. In order to ensure charging safety and prevent abnormal disconnection of the charging interface during charging, it is necessary to use an electronic lock to lock the mechanical locking structure for the second time to prevent live plugging and unplugging. The electronic lock generally applies forward and reverse driving voltages to the motor to drive the mechanical lock rod to move to achieve the locking and unlocking functions of the electronic lock. However, the current electronic locking and unlocking technical solutions have certain common disadvantages, that is, after the electronic lock is locked in place, the driving signal cannot be disconnected in time, and there may still be a certain driving stall time. During this time, the motor coil acts as an inductor to store energy. At the moment of disconnecting the driving voltage, a reverse electromotive force will be formed due to the characteristics of the inductor. This reverse electromotive force has the risk of causing the electronic lock to rebound and unlock, thereby affecting the charging of the entire vehicle. Summary of the invention
[0004] In view of this, an embodiment of the present invention provides a method and a related device for driving an electronic lock of a car charging station to solve the problem in existing solutions that during the electronic locking and unlocking process, the reverse electromotive force generated by the rotor coil inside the electronic lock causes the electronic lock to rebound and unlock.
[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:
[0006] A method for driving an electronic lock of a car charging stand is used to control an electronic lock driving circuit, wherein the electronic lock driving circuit comprises: a first bridge arm and a second bridge arm, wherein the first bridge arm comprises a first switch tube and a third switch tube connected in series, and the second bridge arm comprises a second switch tube and a fourth switch tube connected in series, and the method comprises:
[0007] Get disconnect command;
[0008] Determine a first target switch tube and a second target switch tube corresponding to the disconnection instruction, wherein the first target switch tube is a switch tube located upstream of the bridge arm, and the second switch tube is a switch tube located downstream of the bridge arm;
[0009] while disconnecting the first target switch tube and closing a third target switch tube, the third target switch tube being another switch tube in the bridge arm to which the first target switch tube belongs;
[0010] When the closing time of the third target switch tube reaches a preset time, the second target switch tube and the third target switch tube are controlled to be disconnected.
[0011] Optionally, in the above-mentioned method for driving the electronic lock of the automobile charging station, disconnecting the first target switch tube and closing the third target switch tube at the same time include:
[0012] Based on the disconnection instruction, a falling edge is generated in the first driving signal corresponding to the first target switch tube, which is recorded as a first falling edge;
[0013] A rising edge synchronized with the first falling edge is generated in a third driving signal corresponding to the third target switch tube.
[0014] Optionally, in the above-mentioned method for driving the electronic lock of the automobile charging seat, when the closing time of the third target switch tube reaches a preset time, controlling the second target switch tube and the third target switch tube to be disconnected includes:
[0015] When the closing time of the third target switch tube reaches the preset time, a falling edge is generated in the second driving signal corresponding to the second target switch tube, which is recorded as a second falling edge;
[0016] A falling edge is generated in the third driving signal corresponding to the third target switch tube, which is recorded as a third falling edge.
[0017] Optionally, in the above-mentioned method for driving the electronic lock of the automobile charging station, when the first target switch tube is the first switch tube and the second target switch tube is the fourth switch tube, the third target switch tube is the third switch tube;
[0018] When the first target switch tube is the second switch tube and the second target switch tube is the third switch tube, the third target switch tube is the fourth switch tube.
[0019] Optionally, in the above-mentioned method for driving the electronic lock of the car charging stand, the preset time length is 0.1s.
[0020] Optionally, in the above-mentioned car charging seat electronic lock driving method, the second falling edge is synchronized with the third falling edge.
[0021] A car charging stand electronic lock driving device is used to control an electronic lock driving circuit, the electronic lock driving circuit includes: a first bridge arm and a second bridge arm, the first bridge arm includes a first switch tube and a third switch tube connected in series, the second bridge arm includes a second switch tube and a fourth switch tube connected in series, the device includes:
[0022] An instruction acquisition unit, used for acquiring a disconnection instruction;
[0023] A switch tube control unit is used to determine a first target switch tube and a second target switch tube corresponding to the disconnection instruction, wherein the first target switch tube is a switch tube located upstream of the bridge arm, and the second switch tube is a switch tube located downstream of the bridge arm; while disconnecting the first target switch tube, a third target switch tube is closed, and the third target switch tube is another switch tube in the bridge arm to which the first target switch tube belongs; when the closing time of the third target switch tube reaches a preset time, the second target switch tube and the third target switch tube are controlled to be disconnected.
[0024] A control signal generator, used for providing control signals of switch tubes in the first bridge arm and the second bridge arm in the electronic lock driving circuit, wherein the control signal generator comprises a processor;
[0025] The processor is used to: obtain a disconnection instruction; determine a first target switch tube and a second target switch tube corresponding to the disconnection instruction, wherein the first target switch tube is a switch tube located upstream of a bridge arm, and the second switch tube is a switch tube located downstream of the bridge arm; disconnect the first target switch tube and close the third target switch tube at the same time, wherein the third target switch tube is another switch tube in the bridge arm to which the first target switch tube belongs; when the closing time of the third target switch tube reaches a preset time, control the second target switch tube and the third target switch tube to be disconnected.
[0026] A car charging stand electronic lock drive circuit includes a first bridge arm and a second bridge arm, wherein the first bridge arm includes a first switch tube and a third switch tube connected in series, and the second bridge arm includes a second switch tube and a fourth switch tube connected in series, and also includes: the above-mentioned control signal generator.
[0027] A car comprises a Shanshu car charging seat electronic lock driving circuit.
[0028] Based on the above technical solution, the above solution provided by the embodiment of the present invention determines the first target switch tube and the second target switch tube based on the disconnection instruction generated during the electronic lock and unlock process, disconnects the first target switch tube and closes the third target switch tube at the same time, so that the reverse electromotive force generated by the rotor coil in the electronic lock is released, and when the closing time of the third target switch tube reaches the preset time, the second target switch tube and the third target switch tube are controlled to be disconnected, and the first target switch tube and the second target switch tube are disconnected at this time, responding to the disconnection instruction. At this time, after the first target switch tube and the second target switch tube are disconnected, since the reverse electromotive force generated by the rotor coil in the electronic lock has been released, the phenomenon that the electronic lock generates a reverse electromotive force and then causes the electronic lock to rotate in reverse and unlock will not occur. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0030] Figure 1 This is a topological diagram of the driving principle of the electronic lock;
[0031] Figure 2 This is a schematic diagram of the locking principle of the electronic lock drive;
[0032] Figure 3 It is a schematic diagram of the situation where there is no discharge circuit of the electromotive force in the electronic lock driving circuit in the existing solution;
[0033] Figure 4 A schematic diagram of the process of driving the electronic lock of a car charging stand disclosed in an embodiment of the present application;
[0034] Figure 5 This is a schematic diagram of electromotive force discharge in the electronic lock drive circuit in the solution disclosed in the embodiment of the present application. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0036] like Figure 1 This is the principle topology diagram of the current electronic lock driver unlocking, where U_BAT is a low voltage constant voltage of 9-16V. The first switch tube K1 and the third switch tube K3 of the same bridge arm are mutually exclusive with the second switch tube K2 and the fourth switch tube K4 to prevent the same bridge arm from short-circuiting and causing a fault. By continuously closing the first switch tube K1 and the fourth switch tube K4 and inputting a positive voltage, the electronic lock completes the locking action. The locking schematic diagram is shown in FIG. Figure 2As shown, after the locking action is completed, the first switch tube K1 and the fourth switch tube K4 are disconnected at the same time; by continuously closing the second switch tube K2 and the third switch tube K3 and inputting a reverse voltage, the electronic lock completes the reverse unlocking action, and after the unlocking action is completed, the second switch tube K2 and the third switch tube K3 are disconnected at the same time. However, when the above-mentioned locking and unlocking actions are executed, there is a certain delay between the continuous input voltage and the locking and unlocking actions of the electronic lock, that is, after the locking and unlocking actions are completed, the first switch tube K1, the fourth switch tube K4 or the second switch tube K2, the third switch tube K3 are still in a closed state. Continuously inputting a voltage will cause the coil in the electronic lock in a blocked state to store energy. After the switch tube of the bridge arm is disconnected, the coil will generate a reverse electromotive force and there is nowhere to release it. This reverse electromotive force will cause the risk of the electronic lock rebounding and mislocking or the electronic lock extending and locking by mistake. For details about the reverse electromotive force generated without a discharge circuit, see Figure 3 shown.
[0037] The present invention is based on the fact that during the locking process of the current charging stand electronic lock, the driving time is longer than the locking action time, and there is energy storage in the motor stall coil. After the driving voltage ends, there is a risk that the motor has a reverse electromotive force that reversely drives the electronic lock to unlock. A strategy for driving the electronic lock to lock and unlock is proposed. By controlling the closing timing of the switch tube on the bridge arm, the two poles of the short-circuited motor can quickly release the reverse electromotive force generated by the rotor coil in the electronic lock, preventing the electronic lock from generating a reverse electromotive force and then causing the electronic lock to reversely rotate and unlock. In addition, short-circuiting the two poles of the motor can have the effect of "braking" the motor compared to only discharging through the closing of the switch tube in the lower bridge arm. Due to the existence of electromagnetic damping, the phenomenon of reverse rebound of the electronic lock can be effectively prevented.
[0038] For details, see Figure 4 The embodiment of the present application discloses a method for driving an electronic lock of a car charging station, which is used to control an electronic lock driving circuit. The electronic lock driving circuit includes: a first bridge arm and a second bridge arm, the first bridge arm includes a first switch tube and a third switch tube connected in series, and the second bridge arm includes a second switch tube and a fourth switch tube connected in series. The specific structure of the electronic lock driving circuit can be found in Figure 4 As shown, the method includes:
[0039] Step S101: Obtain a disconnection instruction.
[0040] The disconnection instruction may be a first control instruction for controlling the disconnection of the first switch tube and the fourth switch tube generated after the locking action of the electronic lock of the vehicle charging seat is completed, or a second control instruction for controlling the disconnection of the second switch tube and the third switch tube generated after the unlocking action is completed.
[0041] Step S102: determining a first target switch tube and a second target switch tube corresponding to the disconnection instruction;
[0042] When the disconnection instruction is obtained, the disconnection instruction is parsed to determine the first target switch tube and the second target switch tube corresponding to the disconnection instruction, the first target switch tube is the switch tube located upstream of the bridge arm corresponding to the disconnection instruction, and the second switch tube is the switch tube located downstream of the bridge arm corresponding to the disconnection instruction.
[0043] When the disconnect instruction is a first control instruction, the first target switch tube is a first switch tube, and the second target switch tube is a fourth switch tube.
[0044] When the disconnect instruction is a second control instruction, the first target switch tube is the second switch tube, and the second target switch tube is the third switch tube.
[0045] Step S103: turning off the first target switch tube and closing the third target switch tube at the same time.
[0046] The third target switch tube is another switch tube in the bridge arm to which the first target switch tube belongs.
[0047] In the present embodiment, when the disconnection instruction is obtained, it indicates that the first target switch tube and the second target switch tube need to be disconnected. In the present embodiment, taking into account the above-mentioned problems that occur when the first target switch tube and the second target switch tube are disconnected at the same time, the present application will disconnect the first target switch tube and the second target switch tube successively. Specifically, the first target switch tube is disconnected before the second target switch tube, and while disconnecting the first target switch tube, the third target switch tube is closed. At this time, since the second target switch tube has not been disconnected yet and the third target switch tube is also closed, the two poles of the motor of the electronic lock drive circuit will be short-circuited. After the two poles of the motor are short-circuited, the reverse electromotive force generated by the rotor coil in the electronic lock will be quickly released.
[0048] Step S104: when the closing time of the third target switch tube reaches a preset time, the second target switch tube and the third target switch tube are controlled to be opened.
[0049] In this solution, the preset time length can be set according to design requirements, as long as the reverse electromotive force generated by the rotor coil in the electronic lock can be fully released. For example, the preset time length can be 0.1s, 0.5s, 1s or other time lengths.
[0050] In this step, after the third target switch is closed for a period of time, it is ensured that the reverse electromotive force generated by the rotor coil in the electronic lock has been released, and then the second target switch and the third target switch are controlled to be disconnected, and at this time, the first target switch and the second target switch are disconnected, responding to the disconnection instruction. At this time, after the first target switch and the second target switch are disconnected, since the reverse electromotive force generated by the rotor coil in the electronic lock has been released, the electronic lock will not have a reverse electromotive force, which will cause the electronic lock to rotate in reverse and unlock.
[0051] In the existing scheme, when controlling the switch tubes in the first bridge arm and the second bridge arm to close and open, the switch tubes can be controlled to close and open by sending corresponding high-level signals or low-level signals to the switch tubes. Specifically, whether the switch tube is controlled to be turned on by a high-level signal or by a low-level signal depends on the specific type of the switch tube. For example, in the technical scheme disclosed in this embodiment, the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are all switch tubes with high-level closing and low-level disconnection, that is, when the signal obtained by the control end of these switch tubes is a high-level signal, the switch tube is closed, and when the signal obtained by the control end of these switch tubes is a low-level signal, the switch tube is disconnected. Therefore, after determining the first target switch tube, the present application can control the first target switch tube to be disconnected by generating a falling edge signal in the control signal of the first target switch tube. Therefore, in the above scheme, disconnection The method of closing the third target switch tube at the same time as the first target switch tube may specifically include: determining a drive signal corresponding to the first target switch tube, recorded as a first drive signal, generating a falling edge in the first drive signal, recorded as a first falling edge, the first falling edge being used to control the first target switch tube to switch from a closed state to an open state; obtaining a drive signal corresponding to the third target switch tube, recorded as a third drive signal, generating a rising edge synchronized with the first falling edge in the third drive signal, the rising edge in the third drive signal being used to switch the third target switch from an open state to a closed state, and after the first drive signal and the third drive signal are sent to the first target switch tube and the third target switch tube, since the rising edge in the third drive signal is synchronized with the first falling edge in the first determination signal, the third target switch tube may be controlled to be closed while the first target switch tube is controlled to be opened.
[0052] The control method is the same as the control method of the above embodiment. In the above method, when the closing time of the third target switch tube reaches the preset time, the specific process of controlling the second target switch tube and the third target switch tube to be disconnected includes: when the closing time of the third target switch tube reaches the preset time, a falling edge is generated in the second drive signal corresponding to the second target switch tube, which is recorded as the second falling edge; and a third falling edge is generated in the third drive signal corresponding to the third target switch tube. In this embodiment, the timing starts when the third target switch tube is closed. When the timing time reaches the preset time, the second drive signal corresponding to the second target switch tube is determined, and a falling edge is generated in the second drive signal, which is recorded as the second falling edge. At the same time, a falling edge is generated in the third drive signal, which is recorded as the third falling edge. The third falling edge and the second falling edge can be synchronization signals. After the second drive signal is sent to the second target switch tube and the third drive signal is sent to the third target switch tube, the second target switch tube and the third target switch tube will switch from the closed state to the disconnected state after identifying the second falling edge and the third falling edge.
[0053] In this embodiment, in the technical solution disclosed in the above embodiment, the first target switch tube may be the first switch tube, and when the second target switch tube is the fourth switch tube, at this time, the third target switch tube is the third switch tube.
[0054] At this time, when the first target switch is turned off and the third target switch is turned on, the topological structure of the electronic lock driving circuit is as follows: Figure 5 As shown, at this time, see Figure 5 , under the action of reverse electromotive force, the ground terminal of the third target switch tube is at a high level compared to the ground terminal of the fourth switch tube. When the third switch tube is closed, within a preset time, Figure 5 As shown by the arrow in , the reverse electromotive force generated by the rotor coil in the electronic lock flows through the motor and is introduced into the ground terminal by the fourth switch tube, thereby realizing the discharge of the reverse electromotive force generated by the rotor coil in the electronic lock when the first switch tube is disconnected. After the discharge is completed, the third switch tube and the fourth switch tube are disconnected.
[0055] When the first target switch is the second switch, and the second target switch is the third switch, the third target switch is the fourth switch. At this time, it is necessary to simultaneously control the second switch to be disconnected and the fourth switch to be closed, and wait for the fourth switch to be closed for a preset time. During this process, the ground terminal of the fourth target switch is at a high level compared to the ground terminal of the third switch. After the reverse electromotive force generated by the rotor coil in the electronic lock flows through the motor, it is introduced into the ground terminal by the third switch, so that the reverse electromotive force generated by the rotor coil in the electronic lock is discharged when the second switch is disconnected. After the discharge is completed, the second switch and the third switch are disconnected.
[0056] This embodiment also discloses a car charging stand electronic lock driving device. Similarly, the device is used to control the electronic lock driving circuit. The electronic lock driving circuit includes: a first bridge arm and a second bridge arm. The first bridge arm includes a first switch tube and a third switch tube connected in series. The second bridge arm includes a second switch tube and a fourth switch tube connected in series. For the specific working content of each unit in the device, please refer to the content of the above method embodiment.
[0057] The following describes the electronic lock driving device for a car charging station provided by an embodiment of the present invention, and the electronic lock driving device for a car charging station described below and the electronic lock driving method for a car charging station described above can be referred to each other. The device may include: an instruction acquisition unit and a switch control unit.
[0058] An instruction acquisition unit, which matches step S101 in the above method and is used to obtain a disconnection instruction;
[0059] A switch tube control unit, which matches steps S102-S104 in the above method, is used to determine the first target switch tube and the second target switch tube corresponding to the disconnection instruction, the first target switch tube is the switch tube located upstream of the bridge arm, and the second switch tube is the switch tube located downstream of the bridge arm; disconnecting the first target switch tube and closing the third target switch tube at the same time, the third target switch tube is another switch tube in the bridge arm to which the first target switch tube belongs; when the closing time of the third target switch tube reaches a preset time, controlling the second target switch tube and the third target switch tube to be disconnected.
[0060] Corresponding to the above method, when the switch tube control unit disconnects the first target switch tube and closes the third target switch tube at the same time, it is specifically used to:
[0061] Based on the disconnection instruction, a falling edge is generated in the first driving signal corresponding to the first target switch tube, which is recorded as a first falling edge;
[0062] A rising edge synchronized with the first falling edge is generated in a third driving signal corresponding to the third target switch tube.
[0063] This embodiment also discloses a control signal generator, the pulse signal generator is used to provide control signals to each switch tube in the first bridge arm and the second bridge arm in the electronic lock drive circuit, the control signal generator can be implemented by a processor, at this time the processor is used to: obtain a disconnection instruction; determine the first target switch tube and the second target switch tube corresponding to the disconnection instruction, the first target switch tube is the switch tube located upstream of the bridge arm, and the second switch tube is the switch tube located downstream of the bridge arm; disconnect the first target switch tube and close the third target switch tube at the same time, the third target switch tube is another switch tube in the bridge arm to which the first target switch tube belongs; when the closing time of the third target switch tube reaches a preset time, control the second target switch tube and the third target switch tube to disconnect. Of course, the control signal generator can also be implemented by a related control circuit, the specific type of the control circuit can be set according to the design requirements, as long as it can realize the above functions disclosed in this application, that is, the related circuits used to realize the control strategy of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube in this application are all within the protection scope of this application.
[0064] Correspondingly, the present application also discloses a car charging stand electronic lock driving circuit, see Figure 1 The circuit may include a first bridge arm and a second bridge arm, the first bridge arm includes a first switch tube K1 and a third switch tube K3 connected in series, the second bridge arm includes a second switch tube K2 and a fourth switch tube K4 connected in series, the first bridge arm and the second bridge arm are both configured with a filter capacitor and a diode connected in parallel with the filter capacitor, the first end of the filter capacitor is connected to the common end of the two switch tubes in the first bridge arm and the second bridge arm, the other end of the filter capacitor is grounded, the anode of the diode is grounded, and the cathode of the diode is connected to the first end and the common end of the two switch tubes in the first bridge arm and the second bridge arm. The circuit also includes the above-mentioned control signal generator, the control signal generator may have four control signal output ends, wherein the first control signal output end is used to provide a control signal to the control end of the first switch tube, the second control signal output end is used to provide a control signal to the control end of the second switch tube, the third control signal output end is used to provide a control signal to the control end of the third switch tube, and the fourth control signal output end is used to provide a control signal to the control end of the fourth switch tube.
[0065] Corresponding to the above-mentioned car charging seat electronic lock driving circuit, the present application also discloses a car, which can be applied with the car charging seat electronic lock driving circuit described in the above-mentioned embodiment.
[0066] For the convenience of description, the above system is described as being divided into various modules according to their functions. Of course, when implementing the present invention, the functions of each module can be implemented in the same or multiple software and / or hardware.
[0067] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.
[0068] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.
[0069] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
[0070] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0071] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A method for driving an electronic lock of a car charging station, for controlling an electronic lock driving circuit, wherein the electronic lock driving circuit comprises: The first bridge arm and the second bridge arm, the first bridge arm includes a first switch tube and a third switch tube connected in series, and the second bridge arm includes a second switch tube and a fourth switch tube connected in series, wherein the method includes: Get disconnect command; Determine a first target switch tube and a second target switch tube corresponding to the disconnection instruction, wherein the first target switch tube is a switch tube located upstream of the bridge arm, and the second switch tube is a switch tube located downstream of the bridge arm; while disconnecting the first target switch tube and closing a third target switch tube, the third target switch tube being another switch tube in the bridge arm to which the first target switch tube belongs; When the closing time of the third target switch tube reaches a preset time, the second target switch tube and the third target switch tube are controlled to be disconnected.
2. The method for driving the electronic lock of the car charging station according to claim 1, characterized in that: Turning off the first target switch tube and closing the third target switch tube at the same time comprises: Based on the disconnection instruction, a falling edge is generated in the first driving signal corresponding to the first target switch tube, which is recorded as a first falling edge; A rising edge synchronized with the first falling edge is generated in a third driving signal corresponding to the third target switch tube.
3. The method for driving the electronic lock of a car charging station according to claim 1, characterized in that: When the closing time of the third target switch tube reaches a preset time, controlling the second target switch tube and the third target switch tube to be disconnected includes: When the closing time of the third target switch tube reaches the preset time, a falling edge is generated in the second driving signal corresponding to the second target switch tube, which is recorded as a second falling edge; A falling edge is generated in the third driving signal corresponding to the third target switch tube, which is recorded as a third falling edge.
4. The method for driving the electronic lock of a car charging station according to claim 1, characterized in that: When the first target switch tube is the first switch tube, the second target switch tube is the fourth switch tube, and the third target switch tube is the third switch tube; When the first target switch tube is the second switch tube and the second target switch tube is the third switch tube, the third target switch tube is the fourth switch tube.
5. The method for driving the electronic lock of a car charging station according to claim 1, characterized in that: The preset time length is 0.1s.
6. The method for driving the electronic lock of a car charging station according to claim 3, characterized in that: The second falling edge is synchronized with the third falling edge.
7. A car charging station electronic lock driving device, characterized in that: The device is used to control an electronic lock driving circuit, wherein the electronic lock driving circuit comprises: a first bridge arm and a second bridge arm, wherein the first bridge arm comprises a first switch tube and a third switch tube connected in series, and the second bridge arm comprises a second switch tube and a fourth switch tube connected in series, wherein the device comprises: An instruction acquisition unit, used for acquiring a disconnection instruction; A switch tube control unit is used to determine a first target switch tube and a second target switch tube corresponding to the disconnection instruction, wherein the first target switch tube is a switch tube located upstream of the bridge arm, and the second switch tube is a switch tube located downstream of the bridge arm; while disconnecting the first target switch tube, a third target switch tube is closed, and the third target switch tube is another switch tube in the bridge arm to which the first target switch tube belongs; when the closing time of the third target switch tube reaches a preset time, the second target switch tube and the third target switch tube are controlled to be disconnected.
8. A control signal generator, used to provide control signals for the switch tubes in the first bridge arm and the second bridge arm in the electronic lock driving circuit, characterized in that: The control signal generator comprises: a processor; The processor is used to: obtain a disconnection instruction; determine a first target switch tube and a second target switch tube corresponding to the disconnection instruction, wherein the first target switch tube is a switch tube located upstream of a bridge arm, and the second switch tube is a switch tube located downstream of the bridge arm; disconnect the first target switch tube and close the third target switch tube at the same time, wherein the third target switch tube is another switch tube in the bridge arm to which the first target switch tube belongs; when the closing time of the third target switch tube reaches a preset time, control the second target switch tube and the third target switch tube to be disconnected.
9. A car charging stand electronic lock driving circuit, comprising a first bridge arm and a second bridge arm, wherein the first bridge arm comprises a first switch tube and a third switch tube connected in series, and the second bridge arm comprises a second switch tube and a fourth switch tube connected in series, characterized in that: Also includes: The control signal generator as claimed in claim 8.
10. An automobile, characterized in that: It includes the electronic lock driving circuit of the car charging base as claimed in claim 9.