New energy electric lock and its feedback control circuit, control method, and new energy vehicle

Abstract

This paper provides a new energy electric lock and its feedback control circuit, a control method, and a new energy vehicle. The feedback control circuit is used in a new energy vehicle, and includes a drive module for receiving a lock signal, generating a lock drive signal, and driving the lock of the electric lock according to the lock drive signal. The control unit is connected to a feedback pin of the drive module and configured to obtain a first drive current during the locking process of the electric lock and determine the lock state of the electric lock based on the first drive current, so that the lock status of the charging plug can be notified to the user of the new energy vehicle, and the charging quality of the new energy vehicle can be ensured by avoiding a virtual connection of the charging plug.

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application filed on November 30, 2021, bearing application number 202111473507.5 and entitled "New energy electric lock and its feedback control circuit, control method, and new energy vehicle," the entire contents of which are incorporated herein by reference.

[0002] This document relates to the technical field of electric locks, and may be applied to the field of new energy vehicles, and in particular to a new energy electric lock and its feedback control circuit, control method, and new energy vehicles. [Background technology]

[0003] The charging standard for new energy electric vehicles stipulates that an electrical locking mechanism must be used to ensure a good connection between the charging head and the vehicle charging base, thereby realizing safe charging operations for new energy electric vehicles.

[0004] However, conventional electric locks for new energy vehicles do not have a circuit for synchronizing the operating status of the electric lock with the vehicle's control center. Therefore, during the charging process of a new energy vehicle, if the charging plug is not properly inserted into the charging socket of the new energy vehicle or if the charging plug cannot be locked, the new energy vehicle cannot be charged normally. However, the user of the new energy vehicle will not receive any feedback to that effect, resulting in a large amount of wasted charging time. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, this paper aims to provide a feedback control circuit, control method and electric lock for a new energy electric lock, thereby solving the problem that the charging plug cannot be unplugged or locked during the charging process of a new energy vehicle, which is caused by the inability to synchronize the operating state of the electric lock with the vehicle control center in the prior art.

[0006] To solve the above technical problems, the present invention specifically uses the following technical solutions:

[0007] In one aspect, the present invention provides a feedback control circuit for a new energy electric lock, the feedback control circuit for the new energy electric lock being used in a new energy vehicle; a driving module configured to receive the lock signal, generate a lock driving signal, and drive a lock of the electric lock according to the lock driving signal; and a control unit connected to a feedback pin of the driving module and configured to obtain a first driving current during the locking process of the electric lock and determine the locking state of the electric lock based on the first driving current.

[0008] As an embodiment of the present invention, the electric lock includes a self-feedback unit; The self-feedback unit generates a pulse signal or an analog voltage signal indicating the lock state of the electric lock; The control unit is further configured to determine the lock state of the electric lock based on the duty ratio of the pulse signal or the magnitude of the analog voltage signal.

[0009] In one embodiment of the present invention, an amplifier circuit and a sampling module are further provided between the control unit and the driving module; The amplifier circuit is connected to the feedback pin of the driving module, and the amplifier circuit pulls up and amplifies the initial driving current during the locking process of the electric lock to a voltage to obtain an amplified voltage; The sampling module converts the amplified voltage into the first drive current and transmits it to the control unit.

[0010] As an embodiment herein, the sampling module further transmits the pulse signal or the analog voltage signal to the control unit.

[0011] In one embodiment of the present invention, the amplifier circuit comprises: an operational amplifier connected to analog ground and VCC; a limit resistor connected to the feedback pin of the drive module and having the other end grounded; The limiting resistor pulls up the initial drive current to a voltage which is input to the operational amplifier.

[0012] In one embodiment of the present invention, the operational amplifier comprises: A computing chip; a balance resistor connected to the high-voltage side of the limit resistor and the non-inverting input terminal of the arithmetic chip; an external resistor connected to the low-voltage side of the limit resistor and the inverting input terminal of the arithmetic chip; a feedback resistor coupled to the inverting input of the computing chip and the output of the computing chip.

[0013] In one embodiment of the present invention, the sampling module: a voltage dividing current regulating circuit connected to the output terminal of the arithmetic chip; a filter circuit connected to the voltage division current regulation circuit, the voltage-dividing current regulation circuit converts the amplified voltage into the first drive current and inputs the first drive current to the filter circuit; The filter circuit removes noise waves from the first driving current and inputs the first driving current to the control unit.

[0014] In one embodiment of the present invention, the voltage dividing current regulating circuit includes a first voltage dividing current regulating resistor and a second voltage dividing current regulating resistor; one end of the first voltage dividing current regulating resistor is coupled to the output end of the computing chip; one end of the second voltage dividing current regulating resistor is coupled to the other end of the first voltage dividing current regulating resistor; The other end of the second voltage dividing current regulating resistor is grounded.

[0015] In one embodiment of the present invention, the filter circuit comprises: Includes filter capacity, The filter capacitor has one end coupled to the second voltage dividing current regulating resistor and the other end grounded.

[0016] In one embodiment of the present invention, the power supply further includes a voltage detection circuit; The voltage detection circuit is connected to a voltage input pin of the driving module; The voltage detection circuit detects the voltage state of VCC input to the voltage input pin.

[0017] In one embodiment of the present invention, the voltage detection circuit comprises: a first sense resistor connected to the voltage input pin; and a second sense resistor connected to the first sense resistor; The other end of the second sense resistor is connected to an analog ground pin of the driving module; The other end of the first detection resistor is connected to VCC. The connection point between the first detection resistor and the second detection resistor is connected to the control unit.

[0018] In one embodiment of the present invention, the device further includes an over-temperature protection circuit; The over-temperature protection circuit is connected to an over-temperature protection pin of the driving module; The over-temperature protection pin outputs a temperature signal corresponding to the temperature of the driving module to the over-temperature protection circuit; The over-temperature protection circuit pulls up the temperature signal to a voltage, filters the temperature signal, and inputs the filtered signal to the control unit.

[0019] In one embodiment of the present invention, the over-temperature protection circuit includes a pull-up resistor and an over-temperature protection capacitor; One end of the pull-up resistor is connected to one end of the over-temperature protection capacitor, The other end of the pull-up resistor is connected to a TTL power supply. The other end of the overtemperature protection capacitor is grounded, The connection point between the pull-up resistor and the over-temperature protection capacitance is connected to the control unit and each of the over-temperature protection pins.

[0020] In one embodiment of the present invention, the control unit further comprises: The lock state of the electric lock corresponding to the first drive current is identified based on the first drive current and the correspondence between a predetermined first drive current section prepared in advance and the lock state of the electric lock.

[0021] In another aspect, the present invention further provides a control method for a feedback control circuit of a new energy electric lock, the control method being used in any of the feedback control circuits of the new energy electric locks described above, and the control method includes: receiving a lock drive signal, and , electric Driving the lock of the air lock; Obtaining a first driving current during a locking process of the electric lock; and The method includes determining the lock state of the electric lock based on the first drive current and executing a predetermined operation.

[0022] In one embodiment of the present invention, determining the lock state of the electric lock based on the first driving current further includes: The method includes identifying the lock state of the electric lock corresponding to the first drive current based on the first drive current and a correspondence between a predetermined current section prepared in advance and the lock state of the electric lock.

[0023] In one embodiment of the present invention, the predetermined current section includes a safe section and a dangerous section, The correspondence between the predetermined current section and the lock state of the electric lock is as follows: When the first driving current is in the danger zone, it is determined that the electric lock is in an electric lock stall state; If the first driving current is greater than the danger zone, determining that the electric lock is in a self-failure state; If the first driving current is smaller than the safety zone, the electric lock is determined to be in an open state; and If the first driving current is within the safe range, it is determined that the electric lock is in a normal operating state.

[0024] In one embodiment of the present invention, performing the predetermined operation further comprises: When the electric lock is in an electric lock stall state, sending a stall warning notification; When the electric lock is in a self-failure state, sending an electric lock abnormality notification; and If the electric lock is in an open state, sending an electric lock open indication.

[0025] In one embodiment of the present invention, the control method further comprises: Obtaining a pulse signal or an analog voltage signal from a self-feedback unit of the electric lock; and The method includes determining the lock state of the electric lock based on the duty ratio of the pulse signal or the magnitude of the analog voltage signal.

[0026] As an embodiment of the present invention, determining the lock state of the electric lock based on the duty ratio of the pulse signal or the magnitude of the analog voltage signal is: Identifying the lock state of the electric lock corresponding to the duty ratio of the pulse signal based on the duty ratio of the pulse signal and a correspondence relationship between a predetermined duty ratio section prepared in advance and the lock state of the electric lock, or The method includes identifying the lock state of the electric lock corresponding to the analog voltage signal based on the analog voltage signal and a correspondence between a predetermined voltage section prepared in advance and the lock state of the electric lock.

[0027] In another aspect, the present invention further provides an electric lock for a new energy vehicle, the electric lock being provided with any of the feedback control circuits for the new energy electric lock described above.

[0028] In another aspect, the present invention further provides a new energy vehicle, which is provided with the new energy vehicle electric lock.

[0029] In another aspect, the present invention further provides a computer device including a memory, a processor, and a computer program stored in the memory, the computer device causing the computer program to execute instructions according to the control method when executed by the processor.

[0030] In another aspect, the present disclosure further provides a computer storage medium having a computer program stored thereon, the computer program causing instructions according to the above control method to be executed when executed by a processor of a computing device.

[0031] By using the above technical solution, the sampled current can be obtained during the rotor motor locking process, and the rotor motor locking state can be determined based on the sampled current, which can inform the user of the new energy vehicle of the locked state of the charging plug, avoid virtual connection of the charging plug, and ensure the charging quality of the new energy vehicle.

[0032] In order to make the above and other objects, features and advantages of the present disclosure more readily apparent, the following detailed description, by way of example only, of preferred embodiments, will now be given with reference to the accompanying drawings.

[0033] In order to more clearly explain the technical solutions of the embodiments or prior art of the present invention, the following briefly introduces the accompanying drawings necessary for describing the embodiments or prior art. It is obvious that the accompanying drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these accompanying drawings without any creative efforts. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a schematic diagram showing the minimum system of a feedback control circuit for a new energy electric lock according to an embodiment of the present invention; [Figure 2] FIG. 2 is a schematic diagram illustrating a control unit of a feedback control circuit of a new energy electric lock according to an embodiment of the present invention; [Figure 3] FIG. 2 is a schematic diagram showing a driving module of a feedback control circuit of a new energy electric lock according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram illustrating the self-state feedback of the feedback control circuit of the new energy electric lock according to the embodiment of the present invention; [Figure 5] FIG. 1 is a schematic diagram showing a simplified system of a feedback control circuit of a new energy electric lock according to an embodiment of the present invention; [Figure 6] FIG. 1 is a schematic diagram illustrating a preferred system of a feedback control circuit for a new energy electric lock according to an embodiment of the present invention; [Figure 7] FIG. 1 is a simplified circuit diagram of a feedback control circuit of a new energy electric lock according to an embodiment of the present invention; [Figure 8] FIG. 1 is a schematic diagram showing a preferred circuit of a feedback control circuit for a new energy electric lock according to an embodiment of the present invention; [Figure 9] 1 is a schematic diagram showing a predetermined current space of a feedback control circuit of a new energy electric lock according to an embodiment of the present invention; [Figure 10] FIG. 1 is a schematic diagram illustrating a control method for a feedback control circuit of a new energy electric lock according to an embodiment of the present invention; [Figure 11] FIG. 1 is a schematic diagram illustrating a preferred control method for a feedback control circuit of a new energy electric lock according to an embodiment of the present invention; [Figure 12] 1 is a schematic diagram illustrating a computer device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0035] The following clearly and completely describes the technical solutions of the embodiments of the present document with reference to the accompanying drawings in the embodiments of the present document. Obviously, the described embodiments are only some of the embodiments of the present document, not all of the embodiments. Based on the embodiments of the present document, all other embodiments that can be obtained by those skilled in the art without any creative efforts are within the scope of protection of the present document.

[0036] It should be noted that the terms "first," "second," and the like used in the present specification, claims, and the accompanying drawings are used to distinguish between similar objects and are not necessarily used to describe a particular order or chronological order. It should be understood that such terms can be interchanged where appropriate. Thus, the embodiments described herein may be performed in an order other than that shown or described herein. Furthermore, the terms "comprises," "includes," and any variations thereof are intended to cover a non-exclusive "comprises." For example, a process, method, apparatus, product, or device that includes a series of steps or units does not necessarily explicitly list those steps or units, and may include other steps or units that are not explicitly listed or that are inherent to the process, method, product, or device.

[0037] With the rapid development and widespread adoption of green energy, the development of new energy electric vehicles, the promotion of green mobility, and the comprehensive energy transformation of the transportation system have become trends in the global transportation industry, especially in recent years. Moreover, the trend toward high-voltage, high-current, DC fast charging is becoming more prevalent. Therefore, the charging standard for new energy electric vehicles specifically stipulates the use of an electric locking mechanism to ensure a good connection between the charging head and the vehicle charging base and ensure safe charging for new energy electric vehicles. Meanwhile, major automakers require that new energy charging bases be equipped with an electric lock as standard equipment during the design and production of new energy vehicles, and also explicitly require monitoring and feedback of the operation status of the outlet electric lock and the vehicle charging cap electric lock. Therefore, there is a strong demand for the design of a safe and stable electric lock operation detection circuit that can meet the design requirements of major automakers.

[0038] To meet the above requirements, the embodiment of this document provides a feedback control circuit for a new energy electric lock, which samples the driving current in the electric lock 1 and can feed back the locked state of the rotor motor 11 in the electric lock 1 based on the driving current. It should be noted that the electric lock 1 includes a rotor motor 11 and a self-feedback unit 12, and when the electric lock 1 is locked, the driving force is provided by the rotor motor 11. Therefore, the detection of the driving current is actually the detection of the driving current in the rotor motor 11, and the self-feedback unit 12 can also obtain a pulse signal or analog signal from the rotor motor 11.

[0039] FIG. 1 is a schematic diagram showing the minimum system of the feedback control circuit of the new energy electric lock provided in the embodiment of the present invention. The feedback control circuit of the new energy electric lock disclosed in the present invention can be applied to the charging socket or other sockets in the new energy vehicle. The present invention is not limited to the application field of the feedback control circuit of the new energy electric lock. Specifically, the feedback control circuit of the new energy electric lock includes: a driving module 2 for receiving a lock signal, generating a lock driving signal, and driving the lock of the electric lock 1 by the lock driving signal; and a control unit 31 connected to the feedback pin 23 of the driving module and configured to acquire a first driving current during the locking process of the electric lock 1 and determine the locking state of the electric lock 1 based on the first driving current.

[0040] It should be noted that the driver module 2 in this document may be a driver chip with a few lead pins. The driver module 2 has an H-bridge consisting of at least four MOS transistors, and two pairs of these four MOS transistors can be combined to achieve bidirectional driving of the electric lock 1. The specific implementation process is not described here.

[0041] 2 is a schematic diagram showing a control unit of a feedback control circuit of a new energy electric lock. In this specification, the locking signal may be transmitted by the control unit 31 or by the industrial control module 3 coupled to the control unit 31. The industrial control module 3 may further include a locking signal transmitting unit 32 for transmitting the locking signal. The locking signal transmitting unit 32 is connected to the control unit 31 in the industrial control module 3 to realize data feedback control.

[0042] 3 is a schematic diagram showing a drive module of a feedback control circuit for a new energy electric lock. In this embodiment, a dual input pin 21 of the drive module 2 receives a lock signal. A dual output pin 22 of the drive module 2 is connected to the rotor motor 11 to provide a voltage to the rotor motor 11. In the drive module 2, the initial drive current to the rotor motor 11 via the output pin 22 can be synchronized to the signal feedback pin 23 by the internal structure of the drive module 2. When the rotor motor 11 is locked, the drive current of the rotor motor 11 in the electric lock module 1 changes. However, after the rotor motor 11 has stabilized, for example, after 33 seconds, the feedback pin 23 of the drive module 2 can read the initial drive current of the rotor motor 11.

[0043] FIG. 4 is a schematic diagram showing the self-state feedback of the feedback control circuit of a new energy electric lock. The self-feedback unit 12 generates a pulse signal or an analog voltage signal indicating the lock state of the electric lock. It should be noted that the electric lock in this document can generate a PWM pulse wave, which is obtained by the self-feedback unit 12. In FIG. 4, the abscissa represents the stroke distance of the lock, and the ordinate represents the PWM duty ratio fed back by the electric lock 1 itself. The first point on the abscissa represents the PWM duty ratio when the stroke of the electric lock is zero, and the last point on the abscissa represents the PWM duty ratio when the stroke of the electric lock is maximum. Since the PWM duty ratio code is preset in the control unit 31, the self-feedback unit 12 obtains the PWM of the electric lock 1 and sends it to the control unit 31, which can then determine the lock angle of the electric lock 1 based on the PWM.

[0044] The control unit 31 may also be electrically connected to the feedback pin 23 to read the sampling current corresponding to the initial driving current. The control unit 31 is provided with a code for determining the lock state of the electric lock 1 based on the first driving current.

[0045] Therefore, according to the above method, it is possible to acquire the first drive current of the rotor motor 11, and also to determine the locked state of the rotor motor 11 based on the first drive current.

[0046] As an example of this invention, Fig. 5 shows a simplified system diagram of a feedback control circuit for a new energy electric lock. Between the driving module 2 and the control unit 31, an amplifier circuit 4 and a sampling module 5 are provided.

[0047] The driving module 2 can directly obtain the initial driving current of the electric lock 1 and send the initial driving current to the amplifier circuit 4. The amplifier circuit amplifies the initial driving current to a first driving current and sends it to the sampling module 5. The sampling module 5 samples the first driving current and sends it to the control unit 31.

[0048] As an example of this invention, Fig. 6 is a schematic diagram showing a preferred system of a feedback control circuit for a new energy electric lock. A second diode 02 and a sampling module 5 are provided between the self-feedback unit 12 and the control unit 31. For ease of understanding, Fig. 6 does not show the first diode 01 and the second diode 02.

[0049] The second diode 02 has an anode connected to the self-feedback unit 12 and a cathode connected to the sampling module 5, thereby rectifying the initial driving current.

[0050] The sampling module 5 regulates and filters the initial driving current to obtain the sampling current, which is input to the control unit 31 .

[0051] As an embodiment of the present invention, Fig. 7 is a schematic diagram showing a simplified circuit of a feedback control circuit of a new energy electric lock. In this embodiment, an amplifier circuit 4 and a sampling module 5 are further provided between the control unit 31 and the driving module 2; The amplifier circuit 4 is connected to the feedback pin 23 of the drive module 2, and the amplifier circuit 4 pulls up and amplifies the initial drive current during the locking process of the rotor motor 11 to a voltage, thereby obtaining the amplified voltage.

[0052] The sampling module 5 converts the amplified voltage into a first driving current.

[0053] The filter circuit 6 rectifies the first driving current and transmits it to the control unit 31 .

[0054] The control unit 31 determines the locked state of the rotor motor 11 based on the first drive current.

[0055] It should be noted that this embodiment solves the problem that the initial driving current of the rotor motor 11 is not large enough to meet the current resolution of the control unit 31. However, for the sake of convenience in explaining the current amplification process, the current used by the rotor motor 11 in this embodiment will be referred to as the initial driving current in order to distinguish between the current before and after amplification. Of course, this initial driving current is not different from the sampling current in the previous embodiment, and represents the current of the rotor motor 11 during the locking process of the rotor motor 11.

[0056] As an example of this invention, Fig. 8 is a schematic diagram showing a preferred circuit of a feedback control circuit for a new energy electric lock. In this example, an amplifier circuit 4, a first diode 01, and a sampling module 5 are further provided between the control unit 31 and the driving module 2.

[0057] The amplifier circuit 4 is connected to the feedback pin 23 of the driving module 2, and the amplifier circuit 4 pulls up and amplifies the initial driving current during the locking process of the electric lock 1 to a voltage, thereby obtaining the amplified voltage.

[0058] The first diode 01 has an anode connected to the amplifier circuit 4 and a cathode connected to the sampling module 5, thereby rectifying the amplified voltage.

[0059] The sampling module 5 converts the amplified voltage into a first driving current and sends it to the control unit 31 .

[0060] The control unit 31 determines the locked state of the rotor motor 11 based on the sampled current.

[0061] The self-feedback unit 12 may acquire the PWM pulse signal and analog voltage signal during the locking process of the electric lock and send them to the sampling module 5 via the second diode 02. The sampling module 5 samples them and sends them to the filter circuit 6. The filter circuit 6 sends the pulse signal and analog voltage signal to the control unit 31.

[0062] It should be noted that this embodiment solves the problem that the initial driving current of the rotor motor 11 is not large enough to reach the current resolution of the control unit 31, and also solves the problem of detecting the locking angle of the electric lock 1. It is also possible to detect the magnitude of the analog voltage signal in the electric lock 1. However, for the convenience of explaining the current amplification process, in order to distinguish between the current before and after amplification, the current used in the rotor motor 11 in this embodiment is referred to as the initial driving current. Of course, this initial driving current is not different from the sampling current in the previous embodiment, and represents the current of the rotor motor 11 during the locking process of the rotor motor 11.

[0063] The following describes in detail all the circuits in FIGS.

[0064] The amplifier circuit 4 first converts the initial drive current into a voltage using a limit resistor 415. Then, the voltage is amplified by one amplifier circuit 4 to obtain an amplified voltage. It should be noted that the amplifier circuit 4 is not particularly limited in this description, and any circuit capable of amplifying a voltage may be used as the amplifier circuit 4 according to this embodiment, and may be an integrated circuit or a distributed circuit.

[0065] When the amplifier circuit 4 obtains the amplified voltage, the sampling module 5 performs current regulation on the amplified voltage and divides it to obtain the sampling current. It should be noted that the sampling current and the initial driving current in this embodiment are basically the same, but differ in peak value.

[0066] The control unit 31 receives the sampled current and determines the locked state of the rotor motor 11 based on the sampled current.

[0067] In one embodiment of the present invention, the amplifier circuit 4 is an operational amplifier 41 connected to analog ground and VCC; a limit resistor 415 connected to the feedback pin of the driving module 2 and having the other end grounded; The limit resistor 415 pulls up the initial drive current to a voltage and inputs it to the operational amplifier 41 .

[0068] In this embodiment, the limit resistor 415 may be adjusted according to the input range of the operational amplifier 41. For example, if the input range of the operational amplifier 41 is about 1 V and the initial drive current is 0.1 A, the limit resistor 415 is set to 10 Ω. The present specification does not particularly limit the resistance value of the limit resistor 415. Moreover, since the limit resistor 415 in the present specification has the function of regulating the current to a desired voltage, the limit resistor 415 may not be a single resistor, or may be one or more resistors connected in series or parallel. Therefore, any circuit that a person skilled in the art can regulate as needed and transmit to the operational amplifier 411 falls within the scope of protection sought by the present specification.

[0069] In one embodiment of the present invention, the operational amplifier 41 comprises an operational chip 411 and a balance resistor 412 connected to the high-voltage side of the limit resistor 415 and the non-inverting input terminal of the arithmetic chip 411; an external resistor 413 connected to the low-voltage side of the limit resistor 415 and the inverting input terminal of the arithmetic chip 411; and a feedback resistor 414 coupled to the inverting input of the arithmetic chip 411 and to the output of the arithmetic chip 411 .

[0070] A feedback resistor 414 was connected to the anode of the first diode 01.

[0071] It should be noted that the high voltage side and the low voltage side in this embodiment correspond to the grounded end and the non-grounded end of the limit resistor 415, and one circuit is configured such that the voltage flows from the high voltage side to the low voltage side and then to earth.

[0072] In the embodiment described herein, a co-directional proportional operational amplifier chip is used. Those skilled in the art may design a counter-directional proportional operational amplifier chip as needed; however, the type of operational chip 411 is not particularly limited herein. Any chip capable of amplifying voltage may be used instead of the co-directional proportional operational amplifier chip described herein. In the present embodiment, the resistance value of the balancing resistor 412 is equal to the ratio of the external resistor 413 to the feedback resistor 414, and the voltage amplification factor of the operational chip 411 may be adjusted by the balancing resistor 412. Therefore, the specific value of the balancing resistor 412 is not particularly limited herein. However, a preferred embodiment is one in which the balancing resistor 412 is 10 kΩ, the external resistor 413 is 10 kΩ, and the feedback resistor 414 is 1 MΩ.

[0073] The computing chip 411 was also connected to a 12V power supply and an analog ground. In this document, the specific model number of the computing chip 411 is not particularly limited.

[0074] In one embodiment of the present invention, the sampling module 5 a voltage-dividing current regulating circuit 51 connected to the cathode of the first diode 01 and the cathode of the second diode 02; and a filter circuit 6 connected to the voltage division current regulation circuit 51.

[0075] The voltage dividing current regulating circuit 51 converts the amplified voltage into a sampling current and inputs it to the filter circuit 6 .

[0076] The filter circuit 6 removes noise waves from the sampling current and inputs the same to the control unit 31 .

[0077] It should be noted that the voltage dividing current regulating circuit 51 in this specification regulates the input current of the control unit 31 in accordance with the input current and divides the amplified voltage to protect the control unit 31.

[0078] The filter circuit 6 is for reducing noise interference that occurs during amplification by the amplifier chip.

[0079] As an embodiment of the present invention, the voltage dividing current regulating circuit 51 includes a first voltage dividing current regulating resistor 511 and a second voltage dividing current regulating resistor 512 .

[0080] One end of the first voltage dividing current regulating resistor 511 is coupled to the cathode of the first diode 01 and the cathode of the second diode 02, respectively.

[0081] One end of the first voltage dividing current regulating resistor 511 is coupled to the output end of the arithmetic chip 411 .

[0082] One end of the second voltage dividing current regulating resistor 512 is coupled to the other end of the first voltage dividing current regulating resistor 511 .

[0083] The other end of the second voltage dividing current regulating resistor 512 is grounded.

[0084] In a preferred embodiment, the resistance values ​​of the first voltage dividing current regulating resistor 511 and the second voltage dividing current regulating resistor 512 may both be 30 kΩ.

[0085] In this embodiment, the first voltage-dividing current regulating resistor 511 and the second voltage-dividing current regulating resistor 512 are connected in parallel to divide the amplified voltage. Similarly, in such a voltage division method, some additional resistors may be connected in series to the branch of the first voltage-dividing current regulating resistor 511, and some additional resistors may be connected in parallel to the branch of the second voltage-dividing current regulating resistor 512. Of course, those skilled in the art can create the voltage-dividing current regulating circuit 51 themselves as needed. In this specification, the specific voltage-dividing current regulating circuit 51 is not particularly limited.

[0086] In one embodiment of the present invention, the filter circuit 6 includes a filter capacitor 61 .

[0087] One end of the filter capacitor 61 is coupled to the second voltage dividing current regulating resistor 512, and the other end is grounded.

[0088] In this embodiment, the filtering effect is realized at the lowest cost by the filter function of the filter capacitor 61 itself.

[0089] In a preferred embodiment, the filter capacitance may be 0.1 μF.

[0090] As an embodiment of the present invention, the driving module 2 may further be connected to a voltage detection circuit 7 .

[0091] The voltage detection circuit 7 was connected to the voltage input pin 21 of the driving module 2 .

[0092] The voltage detection circuit 7 detects the voltage state of VCC input to the voltage input pin 24 .

[0093] In the process of driving the electric lock 1, it is very important that the internal voltage of the drive module 2 is stabilized. In new energy vehicles, small consumption voltages, for example, voltages below 36V, are usually integrated into a single power supply. For ease of explanation, this power supply will be referred to as a small power supply. During the vehicle start-stop process, the small power supply may experience a sudden change in electrical resistance, which may cause an abnormality in the voltage output from the small power supply. This will cause an abnormality in the driving process of the electric lock 1, preventing it from being driven by the H-bridge drive signal and making it impossible to open the electric lock 1. Therefore, it is necessary to detect the voltage input to the drive module 2 to determine whether there is an abnormality.

[0094] In this embodiment, the voltage detection circuit 7 It includes a first sense resistor 71 connected to the voltage input pin 21 and a second sense resistor 72 connected to the first sense resistor 71 .

[0095] The other end of the second detection resistor 72 was connected to the analog ground pin 26 of the driving module 2 .

[0096] The other end of the first detection resistor 71 was connected to VCC.

[0097] The connection point between the first detection resistor 71 and the second detection resistor 72 was connected to the control unit 31 .

[0098] It should be noted that the junction between the first detection resistor 71 and the second detection resistor 72 may be directly detected by the control unit 31. Of course, the control unit 31 may use the VCC reference voltage as the initial current value. In this embodiment, the resistance of the first detection resistor 71 is 100 kΩ, and the resistance of the second detection resistor 72 is 20 kΩ. Therefore, the potential at the junction between the first detection resistor 71 and the second detection resistor 72 may be obtained and transmitted to the control unit 31 using the principle of resistor voltage division. If the control unit 31 detects that the potential is different from the preset potential, it determines that an abnormality has occurred in the VCC. If the electric lock 1 cannot operate normally due to an abnormality in the VCC, the control unit 31 may transmit the cause of the failure to the display of the new energy vehicle.

[0099] As a preferred solution, the resistance value of the first detection resistor 71 may be 100 kΩ, and the resistance value of the second detection resistor 72 may be 20 kΩ.

[0100] In this embodiment, an over-temperature protection circuit 8 is further provided.

[0101] The over-temperature protection circuit 8 was connected to the over-temperature protection pin 25 of the driving module 2 .

[0102] The over-temperature protection pin 25 outputs a temperature signal corresponding to the temperature of the driving module 2 to the over-temperature protection circuit 8 .

[0103] The over-temperature protection circuit 8 pulls up the voltage of the temperature signal, filters it, and inputs it to the control unit 31 .

[0104] It should be noted that the overtemperature protection circuit 8 in this specification may exist together with the voltage detection circuit 7 or may exist independently. When the drive module 2 receives a VCC higher than normal or when a surge current occurs, the electric lock 1 may burn out. Therefore, an external circuit capable of suppressing a temperature rise in the drive module 2 due to a surge current is required. The temperature signal in this specification is an electrical signal extracted from the drive module 2 and may correspond to a surge current. By suppressing this temperature signal, high-temperature overload within the drive module 2 can be eliminated. The overtemperature protection circuit 8 can suppress this temperature signal. The overtemperature protection circuit 8 has a pull-up resistor 81 that clamps an undefined signal, such as a temperature signal, to a low level and then filters it through a capacitor.

[0105] In one embodiment of the present invention, the over-temperature protection circuit 8 includes a pull-up resistor 81 and an over-temperature protection capacitor 82; One end of the pull-up resistor 81 was connected to one end of the over-temperature protection capacitor 82 .

[0106] The other end of the pull-up resistor 81 was connected to a TTL power supply.

[0107] The other end of the over-temperature protection capacitor 82 is grounded.

[0108] The connection point between the pull-up resistor 81 and the over-temperature protection capacitor 82 is connected to the control unit 31 and the over-temperature protection pin 25, respectively.

[0109] It should be noted that the resistance value of the pull-up resistor 81 may be from several kΩ to several tens of kΩ. Moreover, the other end of the pull-up resistor 81 is connected to a 5V TTL power supply, and this power supply is controllable. That is, the power supply may be turned on when the new energy vehicle is started, stopped, or charged, but when the new energy vehicle is not started, the power supply is turned off to save power.

[0110] Furthermore, the size of the over-temperature protection capacitor 82 may be selected to be larger than or equal to the limit current of the driving module 2, but is not particularly limited in the present description.

[0111] As an example of this invention, FIG. 9 is a schematic diagram showing a predetermined current space of a feedback control circuit of a new energy electric lock, and shows some predetermined current sections arranged in the control unit 31.

[0112] The control unit 31 identifies the locked state of the rotor motor 11 according to the mapping relationship between the sampled current and the predetermined current section, and between the locked state and the predetermined current section. Here, the predetermined current section includes a dangerous section and a normal section.

[0113] Referring to Figure 6, a mapping relationship is configured in the control unit 31. Table 1 shows the mapping relationship. The mapping relationship indicates the correspondence between the sampled current of the electric lock 1 and its operating state. If the sampled current is greater than the danger zone, the control unit 31 will send a fault notification.

[0114] [Table 1]

[0115] In this predetermined current range, 0.8 A to 1.2 A is a safe range, that is, when the current in the rotor motor 11 is within this range, it indicates that the rotor motor 11 is operating normally.

[0116] The danger zone is 1.2 A to 1.5 A, and if the current in the rotor motor 11 is in this zone, the control unit 31 determines that the rotor motor 11 is in a self-fault state.

[0117] If the current in the rotor motor 11 is smaller than the normal range, the control unit 31 determines that the electric lock 1 is in the open state according to the mapping relationship, that is, the rotor motor 11 cannot be locked and needs to be processed in the open position, for example, by replacing the rotor motor 11, to ensure that the new energy vehicle can be charged normally.

[0118] If the current in the rotor motor 11 is greater than the danger zone, the control unit 31 will determine, according to the mapping relationship, that the drive module 2 is in a self-fault state and the drive current received by the electric lock 1 will be excessive. In this case, the temperature of the electric lock 1 is likely to become excessive, which may cause the electric lock 1 to burn out. Therefore, it is necessary to replace the drive module 2 to ensure that the new energy vehicle can be charged normally.

[0119] According to the feedback control circuit of the new energy electric lock 1 described above, it is possible to obtain the sampling current in the rotor motor 11, and provide feedback to the user of the new energy vehicle in the specified current range where the sampling current is located. It is also possible to detect the input voltage VCC of the drive module 2 and suppress the surge current of the drive module 2, thereby regulating the temperature of the drive module 2 and ensuring the safety of the drive module 2.

[0120] The present embodiment further provides a schematic diagram of a control method for a feedback control circuit of a new energy electric lock, as shown in FIG. 10, which is used in the feedback control circuit of a new energy electric lock, and the control method includes: Step 1001: receiving a lock driving signal and driving a lock of an electric lock by the lock driving signal; Step 1002: obtaining a first driving current during the locking process of the electric lock; and step 1003 of determining the lock state of the electric lock based on the first driving current and performing a predetermined operation.

[0121] According to the above steps, when charging a new energy vehicle, a sampling current corresponding to the initial driving current in the locking process of the rotor motor can be obtained, and the locked state of the electric lock can be determined based on the sampling current of the electric lock.In addition, a relevant warning can be displayed based on the locked state of the electric lock for the charging plug, thereby fully realizing omnidirectional monitoring of the charging outlet, improving the user experience, and ensuring the charging quality and speed of new energy vehicles.

[0122] In one embodiment of the present invention, the step of determining the lock state of the electric lock based on the first driving current further includes: The method includes identifying the lock state of the electric lock corresponding to the first drive current based on the first drive current and a correspondence between a predetermined current section prepared in advance and the lock state of the electric lock.

[0123] As an example of this embodiment, the predetermined current section includes a safe section and a dangerous section.

[0124] The mapping relationship between the predetermined current section and the locked state of the rotor motor is as follows: determining that the rotor motor is in a stall state when the sampled current is in the danger zone; determining that the rotor motor is in a self-fault state if the sampled current is greater than the danger zone; determining that the rotor motor is in an open state if the sampled current is less than the safety zone; and If the sampled current is within the safe zone, it is determined that the rotor motor is in a normal operating state.

[0125] It should be noted that this mapping relationship was obtained through extensive experiments and does not include any artificially established rules. Furthermore, those skilled in the art should be able to use a scope or ammeter in a laboratory to draw conclusions and obtain specific parameter ranges for a given current range. Although the safe range is set to 0.8 A to 1.2 A and the dangerous range is set to 1.2 A to 1.5 A in this document, these safe and dangerous ranges are merely provided for illustrative purposes and provide technical guidance to those skilled in the art. Those skilled in the art can adjust the safe and dangerous ranges based on the actual internal resistance of the rotor motor and the model number of the drive module.

[0126] In one embodiment of the present invention, performing the predetermined operation further comprises: transmitting a stall warning indication if the rotor motor is in a stall condition; When the rotor motor is in a self-failure state, sending an electric lock abnormality indication; and If the rotor motor is in an open state, sending an electric lock open indication.

[0127] It should be noted that the predetermined operation in this document may be presented to the user of the new energy vehicle by sounding an alarm buzzer, or may be presented to the user of the new energy vehicle in a digital format by transmitting an instruction to the center console of the new energy vehicle. The present document does not particularly limit the presentation manner, and those skilled in the art may design it themselves as needed.

[0128] As an embodiment of the present invention, FIG. 11 is a schematic diagram showing a preferred control method for a feedback control circuit of a new energy electric lock. The preferred control method further includes: Step 1101: obtaining a pulse signal or an analog voltage signal from a self-feedback unit of an electric lock; and The method includes step 1102 of determining the lock state of the electric lock based on the duty ratio of the pulse signal or the magnitude of the analog voltage signal.

[0129] The present embodiment further provides an electric lock for a new energy vehicle, which is provided with the feedback control circuit of the above-mentioned new energy electric lock. It should be noted that the electric lock can be a charging socket or an external connection device. For example, when the new energy vehicle is externally charged, the electric lock described herein can also be used.

[0130] The electric lock is also used to lock the door and to notify whether the door is locked properly, thereby improving the safety performance of new energy vehicles.

[0131] The present embodiment further provides a new energy vehicle, which is equipped with the new energy vehicle electric lock.

[0132] FIG. 12 is a schematic diagram illustrating a computing device, and illustrates a computing device provided by an embodiment of the present disclosure. The computing device 1202 may include one or more processors 1204, such as one or more central processing units (CPUs), each of which may implement one or more hardware threads. The computing device 1202 may further include an optional memory 1206 for storing any type of information, such as code, configurations, data, etc. Without limitation, the memory 1206 may include, for example, any type of RAM, any type of ROM, a flash memory device, a hard disk, an optical disk, etc., or a combination thereof. Generally, any memory may store information using any technology. Furthermore, any memory may provide volatile or non-volatile storage for information. Furthermore, any memory may be illustrated as a fixed or removable component of the computing device 1202. In some cases, associated instructions stored in any memory or combination of memories, when executed by the processor 1204, may cause the computing device 1202 to perform any operation according to the associated instructions. The computing device 1202 further includes one or more drives 1208 for interacting with any memory, including, for example, a hard drive, an optical disk drive, or the like.

[0133] The computing device 1202 may further include an input / output module 1210 (I / O) for accepting various inputs (via input devices 1212) and providing various outputs (via output devices 1214). One particular output mechanism may include a graphical user interface (GUI) 1212 associated with a presentation device 1216. In other embodiments, the input / output module 1210 (I / O), input devices 1212, and output devices 1214 may not be included and the computing device may function as only one computing device in a network. The computing device 1202 may further include one or more network interfaces 1220 for exchanging data with other devices via one or more communication links 1222. The above-described components are coupled together by one or more communication buses 1224.

[0134] The communications link 1222 may be implemented in any manner, such as a local area network, a wide area network (e.g., the Internet), a point-to-point connection, or any combination thereof. The communications link 1222 may include any combination of hardwired links, wireless links, routers, gateway functions, name servers, etc. governed by any protocol or combination of protocols.

[0135] Corresponding to the methods in Figures 10 and 11, the embodiments herein further provide a computer-readable storage medium having a computer program stored therein, the computer program causing the steps of the above methods to be realized when executed by a processor.

[0136] Embodiments herein further provide computer readable instructions that, when executed by a processor, cause the processor to perform the methods illustrated in FIGS. 10 and 11 through a program therein.

[0137] It should be understood that in various embodiments of the present disclosure, the magnitude of the numbers in the above steps does not indicate the order of execution, and the execution order of each step should be determined by its function and inherent logic, and does not limit the implementation steps in the embodiments of the present disclosure.

[0138] It should be further understood that the term "and / or" in the examples herein merely represents a relational relationship between associated objects, and indicates that three types of relationships may exist. For example, A and / or B can indicate three types of relationships: the mere presence of A, the simultaneous presence of A and B, and the mere presence of B. Also, in the present description, the symbol " / " generally indicates that the associated objects before and after it have an "or" relationship.

[0139] Those skilled in the art should be aware that each exemplary unit, algorithm, or step described in the embodiments disclosed herein may be realized by electronic hardware, computer software, or a combination of both. To clearly explain the compatibility of hardware and software, the above description generally describes each exemplary configuration and step by function. Whether these functions are implemented by hardware or software depends on the specific application and design constraints of the technical solution. Professionals may implement the described functions using different methods for each specific application, but such implementations should not be deemed to go beyond the scope of the present description.

[0140] As can be clearly understood by those skilled in the art, for convenience and brevity, the specific operation processes of the systems, devices and units described above may be referred to the corresponding processes in the above method embodiments, and the description thereof will be omitted here.

[0141] It should be understood that in some embodiments provided herein, the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. The grouping of units described above is merely based on logical functions, and other groupings may be used in actual implementations. For example, multiple units or components may be combined or integrated into another system. Alternatively, some features may be omitted or not implemented. Incidentally, what is shown or discussed as being mutually coupled, directly coupled, or communicatively connected may be realized by an indirect coupling or communicative connection of some interfaces, devices, or units, but may also be an electrical connection, a mechanical connection, or any other type of connection.

[0142] Units described as being separate elements may, but need not, be physically separate elements. Elements described as units may, but need not, be physical units. That is, they may be located in a single location or may be distributed across multiple network units. Depending on actual needs, some or all of the units may be selected to achieve the objectives of the solutions in the embodiments herein.

[0143] Furthermore, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The integrated units may be realized in the form of hardware or in the form of software functional units.

[0144] The integrated units may be realized in the form of software functional units and stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solutions of the present disclosure, particularly the contributions made to the prior art or all or part of the technical solutions, may be substantially expressed in the form of a software product. The computer software product is stored in a storage medium and includes instructions for causing a computer device (such as a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in each embodiment of the present disclosure. The storage medium includes various media capable of storing program code, such as a U disk, a removable disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0145] Although the present invention provides specific examples to explain the principles and embodiments of the present invention, the explanation of the examples is merely intended to facilitate understanding of the present invention's method and its core concept. Furthermore, those skilled in the art may make modifications to the specific embodiments and their application scope based on the concepts of the present invention. Therefore, it is clear that the contents of this specification should not be construed as limiting the present invention. [Explanation of symbols]

[0146] 01 first diode, 02 second diode, 1 electric lock, 11 rotor motor, 12 self-feedback unit, 2 drive module, 21 input pin, 22 output pin, 23 feedback pin, 24 voltage input pin, 25 over-temperature protection pin, 26 analog ground pin, 3 industrial control module, 31 control unit, 32 lock signal transmission unit, 4 amplifier circuit, 41 operational amplifier, 411 calculation chip, 412 balancing resistor, 413 external resistor, 414 feedback resistor, 415 limit resistor, 5 sampling module, 51 voltage divider current regulation circuit, 511 first voltage divider current regulation resistor, 512 second voltage divider current regulation resistor, 6 filter circuit, 61 filter capacitance, 7 voltage detection circuit, 71 first detection resistor, 72 second detection resistor, 8 over-temperature protection circuit, 81 pull-up resistor, 82 over-temperature protection capacitance, 1202 computer equipment, 1204 A processor, 1206 a memory, 1208 a drive mechanism, 1210 an input / output module, 1212 an input device, 1214 an output device, 1216 a presentation device, 12112 a graphical user interface, 1220 a network interface, 1222 a communication link, and 1224 a communication bus.

Claims

1. A feedback control circuit for a new energy electric lock, Used in new energy vehicles, a driving module configured to receive the lock signal, generate a lock driving signal, and drive a lock of the electric lock according to the lock driving signal; a control unit connected to a feedback pin of the driving module, configured to obtain a first driving current during a locking process of the electric lock, and determine a locking state of the electric lock based on the first driving current; The control unit further comprises: The lock state of the electric lock corresponding to the first drive current is identified based on the first drive current and a correspondence relationship between a predetermined current section and a lock state of the electric lock, the predetermined current section includes a safe section and a dangerous section, The correspondence between the predetermined current section and the lock state of the electric lock is as follows: When the first driving current is in the danger zone, it is determined that the electric lock is in an electric lock stall state; If the first driving current is greater than the danger zone, determining that the electric lock is in a self-failure state; If the first driving current is smaller than the safety zone, the electric lock is determined to be in an open state; and If the first driving current is within the safety zone, it is determined that the electric lock is in a normal operating state. The feedback control circuit of the new energy electric lock is characterized by the above.

2. The electric lock includes a self-feedback unit; The self-feedback unit generates a pulse signal or an analog voltage signal indicating the lock state of the electric lock; The control unit is further configured to determine the lock state of the electric lock based on the duty ratio of the pulse signal or the magnitude of the analog voltage signal. The feedback control circuit of a new energy electric lock according to claim 1.

3. an amplifier circuit and a sampling module are further provided between the control unit and the driving module; the amplifier circuit is connected to the feedback pin of the drive module; The amplifier circuit amplifies the initial driving current during the locking process of the electric lock by pulling it up to a voltage, and obtains the amplified voltage; the sampling module converts the amplified voltage into the first driving current and transmits it to the control unit; The feedback control circuit of a new energy electric lock according to claim 2.

4. The sampling module further transmits the pulse signal or the analog voltage signal to the control unit. The feedback control circuit of the new energy electric lock according to claim 3.

5. The amplifier circuit an operational amplifier connected to analog ground and VCC; a limit resistor connected to the feedback pin of the drive module and having the other end grounded; the limiting resistor pulls up the initial driving current to a voltage and inputs it to the operational amplifier; The feedback control circuit of the new energy electric lock according to claim 3.

6. The operational amplifier A computing chip; a balance resistor connected to the high-voltage side of the limit resistor and the non-inverting input terminal of the arithmetic chip; an external resistor connected to the low-voltage side of the limit resistor and the inverting input terminal of the arithmetic chip; a feedback resistor coupled to the inverting input of the computing chip and the output of the computing chip; The feedback control circuit of a new energy electric lock according to claim 5.

7. The sampling module includes: a voltage dividing current regulating circuit connected to the output terminal of the arithmetic chip; a filter circuit connected to the voltage division current regulation circuit, the voltage-dividing current regulation circuit converts the amplified voltage into the first drive current and inputs the first drive current to the filter circuit; the filter circuit removes noise waves from the first driving current and inputs the first driving current to the control unit; The feedback control circuit of a new energy electric lock as claimed in claim 6.

8. the voltage dividing current regulating circuit includes a first voltage dividing current regulating resistor and a second voltage dividing current regulating resistor; one end of the first voltage dividing current regulating resistor is coupled to the output end of the computing chip; one end of the second voltage-dividing current regulating resistor is coupled to the other end of the first voltage-dividing current regulating resistor; The other end of the second voltage dividing current regulating resistor is grounded. The feedback control circuit of a new energy electric lock as claimed in claim 7.

9. the filter circuit includes a filter capacitor; One end of the filter capacitor is coupled to the second voltage dividing current regulating resistor, and the other end is grounded. The feedback control circuit of a new energy electric lock as claimed in claim 8.

10. further comprising a voltage detection circuit; The voltage detection circuit is connected to a voltage input pin of the driving module; the voltage detection circuit detects the voltage state of VCC input to the voltage input pin; The feedback control circuit of a new energy electric lock according to claim 1.

11. The voltage detection circuit a first sense resistor connected to the voltage input pin; a second sense resistor connected to the first sense resistor; The other end of the second sense resistor is connected to an analog ground pin of the driving module; The other end of the first detection resistor is connected to VCC. a connection point between the first detection resistor and the second detection resistor is connected to the control unit; The feedback control circuit of a new energy electric lock as claimed in claim 10.

12. further including an over-temperature protection circuit; The over-temperature protection circuit is connected to an over-temperature protection pin of the driving module; The over-temperature protection pin outputs a temperature signal corresponding to the temperature of the driving module to the over-temperature protection circuit; the over-temperature protection circuit pulls up the temperature signal and filters it before inputting it to the control unit; The feedback control circuit of a new energy electric lock according to claim 1.

13. the over-temperature protection circuit includes a pull-up resistor and an over-temperature protection capacitor; One end of the pull-up resistor is connected to one end of the over-temperature protection capacitor, The other end of the pull-up resistor is connected to a TTL power supply. The other end of the overtemperature protection capacitor is grounded, a connection point between the pull-up resistor and the over-temperature protection capacitance is connected to the control unit and each of the over-temperature protection pins; The feedback control circuit of a new energy electric lock as claimed in claim 12.

14. A control method for a feedback control circuit of a new energy electric lock, comprising: The feedback control circuit of the new energy electric lock according to any one of claims 1 to 13 is used, receiving a lock drive signal and driving a lock of an electric lock by the lock drive signal; Obtaining a first driving current during a locking process of the electric lock; and determining a lock state of the electric lock based on the first drive current and executing a predetermined operation; Determining the lock state of the electric lock based on the first driving current further includes: and determining a lock state of the electric lock corresponding to the first drive current based on a correspondence relationship between the first drive current and a predetermined current section prepared in advance and the lock state of the electric lock; the predetermined current section includes a safe section and a dangerous section, The correspondence between the predetermined current section and the lock state of the electric lock is as follows: When the first driving current is in the danger zone, it is determined that the electric lock is in an electric lock stall state; If the first driving current is greater than the danger zone, determining that the electric lock is in a self-failure state; If the first driving current is smaller than the safety zone, the electric lock is determined to be in an open state; and If the first driving current is within the safety zone, it is determined that the electric lock is in a normal operating state. The control method for a feedback control circuit of a new energy electric lock is characterized by the following.

15. Performing the predetermined operation further includes: When the electric lock is in an electric lock stall state, sending a stall warning notification; When the electric lock is in a self-failure state, sending an electric lock abnormality notification; and If the electric lock is in an open state, sending an electric lock open indication; The control method for a feedback control circuit of a new energy electric lock as claimed in claim 14.

16. Obtaining a pulse signal or an analog voltage signal from a self-feedback unit of the electric lock; and The method further includes determining the lock state of the electric lock based on the duty ratio of the pulse signal or the magnitude of the analog voltage signal. The control method for a feedback control circuit of a new energy electric lock as claimed in claim 14.

17. Determining the lock state of the electric lock based on the duty ratio of the pulse signal or the magnitude of the analog voltage signal Identifying the lock state of the electric lock corresponding to the duty ratio of the pulse signal based on the duty ratio of the pulse signal and a correspondence relationship between a predetermined duty ratio section prepared in advance and the lock state of the electric lock, or and determining the lock state of the electric lock corresponding to the analog voltage signal based on the analog voltage signal and a correspondence relationship between a predetermined voltage section and the lock state of the electric lock. The control method for a feedback control circuit of a new energy electric lock as claimed in claim 16.

18. An electric lock for a new energy vehicle, comprising the feedback control circuit for the new energy electric lock according to any one of claims 1 to 13.

19. A new energy vehicle, characterized in that it is provided with the new energy vehicle electric lock according to claim 18.

20. 1. A computing device including a memory, a processor, and a computer program stored in the memory, The computer program, when executed by the processor, causes instructions to be executed according to the method of claim 14.

1. A computer device characterized by:

21. A computer storage medium storing a computer program, The computer program, when executed by a processor of a computing device, causes instructions according to the method of claim 14 to be carried out. A computer storage medium comprising:

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