Vehicle door lock control circuit, vehicle door lock and vehicle

Abstract

The utility model provides a vehicle door lock control circuit, a vehicle door lock and a vehicle, the vehicle door lock control circuit comprises a first backup unlocking circuit, the first backup unlocking circuit comprises a power failure detection sub-circuit and an energy storage sub-circuit, after the power failure detection sub-circuit detects that a power supply in a vehicle door lock loop interrupts power supply, the energy storage sub-circuit is started to supply power, and the energy storage sub-circuit is started to supply power; the vehicle door lock loop is controlled to be conducted according to the flow direction of the unlocking current; and / or the second backup unlocking circuit comprises a first disconnection detection sub-circuit and a second disconnection detection sub-circuit, the first disconnection detection sub-circuit controls the first end of the door lock motor to be connected with the power supply after detecting that the first end line of the door lock motor in the vehicle door lock loop is disconnected, and the second disconnection detection sub-circuit controls the second end of the door lock motor to be disconnected with the power supply. And after the second disconnection detection sub-circuit detects that the second end line of the door lock motor is disconnected, the second end of the door lock motor is controlled to be connected with the ground end. When a vehicle door lock loop is powered off or broken to cause BCM failure, the door lock motor can be ensured to complete unlocking operation, and the vehicle door lock unlocking device is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a vehicle door lock control circuit, a vehicle door lock and a vehicle. Background Art

[0002] The locking and unlocking of the vehicle is generally achieved by controlling the door lock motor through the body control module (BCM). Specifically, when the owner presses the remote control key or the unlock button on the driver's side, the BCM will drive the door lock motor to rotate, and the rotating gear is connected to the lock pin in the door lock mechanism. When the gear turns to a specific position, the door is unlocked; conversely, after pressing the lock button, the door lock motor rotates in the opposite direction, thereby pulling the lock pin back to the locked position to lock the door.

[0003] However, the process of driving the door lock motor to lock and unlock the vehicle is only controlled by the BCM. If the BCM fails due to power supply abnormality or line abnormality, the vehicle locking and unlocking operations will not be able to proceed normally, resulting in a major safety hazard in the vehicle door lock control link, and the safety and reliability of the door lock control process are low. Utility Model Content

[0004] The utility model provides a vehicle door lock control circuit, a vehicle door lock and a vehicle, which are used to solve the defects of low safety and reliability in the traditional vehicle door lock control process.

[0005] In one aspect, the utility model provides a vehicle door lock control circuit, comprising:

[0006] A first backup unlocking circuit is connected in parallel with the vehicle door lock circuit, wherein the first backup unlocking circuit includes a power failure detection subcircuit and an energy storage subcircuit, wherein the power failure detection subcircuit starts the energy storage subcircuit to supply power after detecting that the power supply in the vehicle door lock circuit is interrupted, and controls the vehicle door lock circuit to be turned on according to the unlocking current flow; and / or,

[0007] The second backup unlocking circuit is connected in parallel with the vehicle door lock circuit. The second backup unlocking circuit includes a first disconnection detection sub-circuit and a second disconnection detection sub-circuit. After detecting that the first end of the door lock motor in the vehicle door lock circuit is disconnected, the first disconnection detection sub-circuit controls the first end of the door lock motor to be connected to the power supply. After detecting that the second end of the door lock motor is disconnected, the second disconnection detection sub-circuit controls the second end of the door lock motor to be connected to the ground.

[0008] According to the vehicle door lock control circuit provided by the utility model, the power-off detection subcircuit includes: a first transistor, a second transistor and a current-limiting resistor;

[0009] The base of the first transistor is connected to the energy storage sub-circuit and the power supply respectively, the emitter of the first transistor is connected to the energy storage sub-circuit, and the collector of the first transistor is connected to the first end of the current limiting resistor;

[0010] The collector of the second transistor is connected to the door lock motor, the base of the second transistor is connected to the second end of the current limiting resistor, and the emitter of the second transistor is grounded.

[0011] According to the vehicle door lock control circuit provided by the utility model, the energy storage subcircuit includes: an energy storage capacitor;

[0012] One end of the energy storage capacitor is connected to the door lock motor, and the other end of the energy storage capacitor is grounded.

[0013] According to the vehicle door lock control circuit provided by the utility model, the energy storage subcircuit further includes: a voltage dividing module and / or a voltage stabilizing module;

[0014] The voltage dividing module includes a first resistor and a second resistor;

[0015] The first end of the first resistor and the first end of the second resistor are both connected to the energy storage capacitor, the second end of the first resistor is connected to the power supply, and the second end of the second resistor is grounded;

[0016] The voltage stabilizing module includes a voltage stabilizing resistor and a reverse diode;

[0017] The first end of the voltage-stabilizing resistor is connected to the power supply, and the second end of the voltage-stabilizing resistor and the reverse diode are both connected to the power-off detection subcircuit.

[0018] According to the vehicle door lock control circuit provided by the utility model, the energy storage subcircuit further includes: a current limiting diode;

[0019] The current limiting diode is connected to the energy storage capacitor.

[0020] According to the vehicle door lock control circuit provided by the utility model, it is characterized in that the first disconnection detection subcircuit includes: a third transistor, a fourth transistor, a first diode, a third resistor and a fourth resistor;

[0021] The base of the third transistor is connected to the first end of the third resistor, the second end of the third resistor is connected to the first diode, the collector of the third transistor and the base of the fourth transistor are both connected to the fourth resistor, the emitter of the third transistor is grounded, the emitter of the fourth transistor is connected to the power supply, and the collector of the fourth transistor is connected to the first end of the door lock motor.

[0022] According to the vehicle door lock control circuit provided by the utility model, the second disconnection detection subcircuit includes: a fifth transistor, a second diode and a fifth resistor;

[0023] The base of the fifth transistor is connected to the second diode and the fifth resistor respectively, the collector of the fifth transistor is connected to the second end of the door lock motor, and the emitter of the fifth transistor is grounded.

[0024] The vehicle door lock control circuit provided by the utility model further includes: a first anti-reverse diode and / or a second anti-reverse diode;

[0025] The positive electrode of the first anti-reverse diode is connected to the energy storage sub-circuit, and the negative electrode of the first anti-reverse diode is connected to the first end of the door lock motor;

[0026] The anode of the second anti-reverse diode is connected to the first disconnection detection sub-circuit, and the cathode of the second anti-reverse diode is connected to the first end of the door lock motor.

[0027] On the other hand, the utility model further provides a vehicle door lock, comprising any one of the above-mentioned vehicle door lock control circuits.

[0028] On the other hand, the utility model further provides a vehicle, comprising any one of the above-mentioned vehicle door lock control circuits or the above-mentioned vehicle door locks.

[0029] The vehicle door lock control circuit, vehicle door lock and vehicle provided by the utility model, by setting a first backup unlocking circuit and / or a second backup unlocking circuit, can use the corresponding backup unlocking circuit to ensure that the door lock motor completes the unlocking operation normally when the vehicle door lock circuit fails due to power outage or disconnection causing BCM failure, thereby solving the problem that the traditional vehicle door lock control scheme cannot be unlocked normally when the BCM fails, and achieving the beneficial effect of improving the safety and reliability of the door lock control process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the circuit structure of the traditional BCM and door lock motor cooperating to realize door lock control;

[0032] Figure 2This is one of the structural schematic diagrams of the vehicle door lock control circuit provided by the embodiment of the utility model;

[0033] Figure 3 This is the second structural schematic diagram of the vehicle door lock control circuit provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] This embodiment relates to the vehicle field, and can be specifically applied to the control scenario of vehicle door locks. For the electronic control part of the vehicle door lock, the locking and unlocking processes are usually completed by the BCM. Figure 1 The circuit structure of a traditional BCM and a door lock motor cooperating to realize door lock control is shown by way of example, wherein the BCM and the door lock motor can form a vehicle door lock circuit.

[0036] Specifically, Figure 1 As shown, the BCM controls the forward and reverse rotation of the door lock motor M by controlling the current direction in the vehicle door lock circuit, thereby achieving locking and unlocking. In this embodiment, it is defined that the current flows from Lock+ to Lock- for locking, and from Lock- to Lock+ for unlocking. There are two bilateral relays inside the BCM. L and K R , in the undriven state, the relay contacts connected to Lock+ and Lock- are both grounded. When locking is required, the BCM controls the C+ contact to be connected to the ground, and the relay K on the left L The lock is then closed, and the Lock+ contact is connected to the power supply BAT, forming a current flow from Lock+ to Lock-. When unlocking, the BCM controls the C- contact to be connected to the ground, and the relay K on the right R It is pulled in, and then the Lock- contact is connected to the power supply BAT, forming a current flow from Lock- to Lock+.

[0037] In actual applications, in addition to the owner issuing locking and unlocking commands through the remote control key and the door button, the BCM can also achieve automatic locking and unlocking based on information such as vehicle speed, anti-theft status, collision signals, etc. However, no matter which of the above control schemes is used, the door lock motor is only driven by the BCM, without other redundant circuits. Once the BCM fails, it cannot control the locking and unlocking process normally, and the safety and reliability of the control process are low.

[0038] Based on this, this embodiment provides a solution to the above problem. Figures 1 to 3 The detailed scheme of the vehicle door lock control circuit, the vehicle door lock and the vehicle provided by the embodiment of the utility model is described.

[0039] Figure 2 This is one of the structural schematic diagrams of the vehicle door lock control circuit provided by the embodiment of the utility model.

[0040] like Figure 2 As shown, the vehicle door lock control circuit provided by the embodiment of the utility model is constructed on the basis of the vehicle door lock circuit including the BCM and the door lock motor M, and the circuit specifically includes:

[0041] The first backup unlocking circuit 10 is connected in parallel with the vehicle door lock circuit. The first backup unlocking circuit 10 includes a power failure detection subcircuit 101 and an energy storage subcircuit 102. After the power failure detection subcircuit 101 detects that the power supply in the vehicle door lock circuit is interrupted, the energy storage subcircuit 102 is started to supply power to the door lock motor M and control the vehicle door lock circuit to be turned on according to the unlocking current flow; and / or,

[0042] The second backup unlocking circuit 20 is connected in parallel with the vehicle door lock circuit. The second backup unlocking circuit 20 includes a first disconnection detection sub-circuit 201 and a second disconnection detection sub-circuit 202. After detecting that the line of the first end of the door lock motor M in the vehicle door lock circuit is interrupted, the first disconnection detection sub-circuit 201 controls the first end of the door lock motor M to be connected to the power supply. After detecting that the line of the second end of the door lock motor M is interrupted, the second disconnection detection sub-circuit 202 controls the second end of the door lock motor M to be connected to the ground.

[0043] It can be understood that since the first backup unlocking circuit 10 and the second backup unlocking circuit 20 in this embodiment can operate independently without affecting the normal operation of the original vehicle door lock circuit, the above two backup unlocking circuits can be set either one or both.

[0044] In this embodiment, the first backup unlocking circuit 10 is mainly used to be enabled in the event of a power outage in the vehicle door lock circuit. Therefore, when the BCM in the vehicle door lock circuit fails due to a power outage, the energy storage sub-circuit 102 can be used as a backup power supply to provide power for unlocking the door lock motor M, and then the vehicle door lock circuit can be controlled by the power outage detection sub-circuit to be conducted according to the unlocking current flow to achieve the unlocking operation.

[0045] The second backup unlocking circuit 20 is mainly used to be enabled when a wire break occurs in the door lock circuit in the vehicle. Thus, when a wire break occurs at both ends of the door lock motor, the first end of the door lock motor M can be connected to the power supply in the BCM through the first wire break detection sub-circuit 201, and the second end of the door lock motor M can be connected to the ground through the second wire break detection sub-circuit 202, forming a path for the unlocking current to flow, thereby completing the unlocking operation.

[0046] Figure 3 The detailed circuit structures of the first backup unlocking circuit 10 and the second backup unlocking circuit 20 are exemplarily shown.

[0047] In one embodiment, if Figure 3 As shown, the power-off detection subcircuit includes: a first transistor K1, a second transistor K2 and a current-limiting resistor R3;

[0048] The base of the first transistor K1 is connected to the energy storage subcircuit and the power supply respectively, the emitter of the first transistor K1 is connected to the energy storage subcircuit, and the collector of the first transistor K1 is connected to the first end of the current limiting resistor R3.

[0049] The collector of the second transistor K2 is connected to the door lock motor M, the base of the second transistor K2 is connected to the second end of the current limiting resistor R3, and the emitter of the second transistor K2 is grounded.

[0050] In one embodiment, see Figure 3 , the energy storage sub-circuit includes: an energy storage capacitor C1;

[0051] One end of the energy storage capacitor C1 is connected to the door lock motor M, and the other end of the energy storage capacitor C1 is grounded. In this embodiment, the energy storage capacitor C1 can provide the door lock motor with the electric energy required for unlocking after the power supply KL30 is powered off.

[0052] In one embodiment, see Figure 3 , the energy storage subcircuit may further include: a voltage dividing module and / or a voltage stabilizing module;

[0053] The voltage dividing module includes a first resistor R1 and a second resistor R2;

[0054] The first end of the first resistor R1 and the first end of the second resistor R2 are both connected to the energy storage capacitor C1, the second end of the first resistor R1 is connected to the power supply, and the second end of the second resistor R2 is grounded.

[0055] It can be understood that the voltage divider module composed of the first resistor R1 and the second resistor R2 can reduce the voltage of the energy storage capacitor C1 to less than 12V, thereby ensuring the safe operation of the circuit.

[0056] The voltage stabilizing module includes a voltage stabilizing resistor R0 and a reverse diode Z1;

[0057] A first end of the voltage-stabilizing resistor R0 is connected to the power supply, and a second end of the voltage-stabilizing resistor R0 and the reverse diode Z1 are both connected to the power-off detection subcircuit.

[0058] like Figure 3 As shown, KL30 is the power supply for the vehicle door lock, which can provide initial power for the vehicle door lock circuit. The voltage stabilizing module composed of the voltage stabilizing resistor R0 and the reverse diode Z1 can stabilize the voltage provided by the power supply KL30 to 12V, preventing the problem of the circuit misjudging the unlocking due to the transient drop in the power supply of the power supply KL30.

[0059] In one embodiment, see Figure 3 , the energy storage sub-circuit may further include: a current limiting diode D2;

[0060] The current limiting diode D2 is connected to the energy storage capacitor C1, and the current limiting diode D2 is used to limit the current direction of the energy storage capacitor C1 after power failure.

[0061] In one embodiment, see Figure 3 , the first disconnection detection sub-circuit includes: a third transistor K3, a fourth transistor K4, a first diode D5, a third resistor R5 and a fourth resistor R6;

[0062] The base of the third triode K3 is connected to the first end of the third resistor R5, the second end of the third resistor R5 is connected to the first diode D5, the collector of the third triode K3 and the base of the fourth triode K4 are both connected to the fourth resistor R6, the emitter of the third triode K3 is grounded, the emitter of the fourth triode K4 is connected to the power supply KL30, and the collector of the fourth triode K4 is connected to the first end of the door lock motor M.

[0063] In one embodiment, see Figure 3 , the second disconnection detection sub-circuit includes: a fifth transistor K5, a second diode D4 and a fifth resistor R4;

[0064] The base of the fifth transistor K5 is connected to the second diode D4 and the fifth resistor R4 respectively, the collector of the fifth transistor K5 is connected to the second end of the door lock motor M, and the emitter of the fifth transistor K5 is grounded.

[0065] In one embodiment, see Figure 2 and Figure 3 , the above-mentioned vehicle door lock control circuit may further include: a first anti-reverse diode D1 and / or a second anti-reverse diode D3;

[0066] The positive electrode of the first anti-reverse diode D1 is connected to the energy storage sub-circuit, and the negative electrode of the first anti-reverse diode D1 is connected to the first end of the door lock motor M;

[0067] The anode of the second anti-reverse diode D3 is connected to the first disconnection detection sub-circuit, and the cathode of the second anti-reverse diode D3 is connected to the first end of the door lock motor M.

[0068] The first anti-reverse diode D1 is mainly used to prevent the current from flowing to the energy storage sub-circuit when the vehicle is locked to avoid interference. The second anti-reverse diode D3 is also used to prevent the reverse flow of current from interfering with the entire circuit.

[0069] Taking the vehicle door lock control circuit including both the first backup unlocking circuit and the second backup unlocking circuit as an example, the following is combined with the attached Figures 1 to 3 The working process of the entire vehicle door lock control circuit under different situations is explained:

[0070] When the power supply KL30 is supplying power normally, initially, the 12V power supply KL30 charges the energy storage capacitor C1 through the first resistor R1 and the current limiting diode D2. After the charging is completed, the circuit is stable. At this time, the voltage of the energy storage capacitor and the emitter voltage of the first transistor K1 are both R1 / (R1+R2)×12-0.7V, and the base voltage of the first transistor K1 is 12V, so the first transistor K1 is not conducting, and at this time the base voltage of the second transistor K2 is 0, and the second transistor K2 is also not conducting, so the entire vehicle door lock circuit is not conducting, and there is no unlocking action.

[0071] When the power supply KL30 is powered off, the base voltage of the first transistor K1 begins to drop, and the emitter of the first transistor K1 does not drop immediately due to the presence of the energy storage capacitor C1. At this time, the first transistor K1 meets the conduction condition, and part of the current flows into the ground through the first resistor R1 and the second resistor R2, and the other part passes through the current limiting resistor R3, and then forms a loop through the emitter of the second transistor K2. At this time, the second transistor K2 is turned on. After the second transistor K2 is turned on, it is equivalent to a switch, and a current path is formed from the energy storage capacitor C1 through the first anti-reverse diode D1, the door lock motor M and the second transistor K2, and the door lock motor is unlocked.

[0072] Combination Figure 1 It can be seen from the unlocking control circuit inside the BCM that when there is no unlocking action, the contact Lock+ and the contact Lock- are both grounded, the second diode D4 and the first diode D5 are connected to the ground, the bases of the third transistor K3 and the fifth transistor K5 are at a low level and are not conducting, so the fourth transistor K4 is also not conducting, and the entire circuit is not conducting. When there is an unlocking action, at least one of the contact Lock+ and the contact Lock- is grounded, the bases of the third transistor K3 and the fifth transistor K5 are still at a low level, the circuit is not conducting, and there is no unlocking action.

[0073] Normally, after a collision, the vehicle door lock circuit is disconnected, and the wiring harness is generally disconnected at the joint, so the contacts Lock+ and Lock- are disconnected at the same time. At this time, the second diode D4 and the first diode D5 are no longer conducting, and the bases of the third transistor K3 and the fifth transistor K5 are pulled up to a high level and are in the on state. When the third transistor K3 is turned on, the fourth transistor K4 also meets the conduction condition, and the voltage of the power supply KL30 is conducted to the first end of the door lock motor M. At the same time, after the fifth transistor K5 is turned on, the second end of the door lock motor M is connected to the ground, forming an unlocking circuit, and the door lock motor is unlocked.

[0074] It can be seen that the vehicle door lock control circuit provided by the embodiment of the utility model has added at least one set of backup unlocking circuits without affecting the normal operation of the original vehicle door lock circuit. When the vehicle encounters a power failure such as a collision, or a door lock drive circuit is broken, the backup unlocking circuit can be used to automatically unlock the door, thereby ensuring that the door can be opened normally when the NCM fails, without affecting the evacuation of the driver and passengers, thereby improving the safety and reliability of the door lock control process.

[0075] In addition, an embodiment of the present utility model further provides a vehicle door lock, which specifically includes the vehicle door lock control circuit provided by the above embodiments.

[0076] It can be understood that the vehicle door lock can be unlocked normally even if the BCM fails through the improved vehicle door lock control circuit, and the door lock is safer.

[0077] In addition, an embodiment of the utility model further provides a vehicle, which includes the vehicle door lock control circuit provided by the above embodiments or the above vehicle door lock.

[0078] It can be understood that by installing an improved vehicle door lock control circuit, or installing a vehicle door lock with the vehicle door lock control circuit, the vehicle can ensure that the door lock is unlocked normally in the event of a BCM failure, thereby improving the operating safety of the vehicle.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vehicle door lock control circuit, characterized in that: include: A first backup unlocking circuit is connected in parallel with the vehicle door lock circuit, wherein the first backup unlocking circuit includes a power failure detection subcircuit and an energy storage subcircuit, wherein the power failure detection subcircuit starts the energy storage subcircuit to supply power after detecting that the power supply in the vehicle door lock circuit is interrupted, and controls the vehicle door lock circuit to be turned on according to the unlocking current flow; and / or, The second backup unlocking circuit is connected in parallel with the vehicle door lock circuit. The second backup unlocking circuit includes a first disconnection detection sub-circuit and a second disconnection detection sub-circuit. After detecting that the first end of the door lock motor in the vehicle door lock circuit is disconnected, the first disconnection detection sub-circuit controls the first end of the door lock motor to be connected to the power supply. After detecting that the second end of the door lock motor is disconnected, the second disconnection detection sub-circuit controls the second end of the door lock motor to be connected to the ground.

2. The vehicle door lock control circuit according to claim 1, characterized in that: The power-off detection subcircuit comprises: a first triode, a second triode and a current-limiting resistor; The base of the first transistor is connected to the energy storage sub-circuit and the power supply respectively, the emitter of the first transistor is connected to the energy storage sub-circuit, and the collector of the first transistor is connected to the first end of the current limiting resistor; The collector of the second transistor is connected to the door lock motor, the base of the second transistor is connected to the second end of the current limiting resistor, and the emitter of the second transistor is grounded.

3. The vehicle door lock control circuit according to claim 1, characterized in that: The energy storage subcircuit comprises: an energy storage capacitor; One end of the energy storage capacitor is connected to the door lock motor, and the other end of the energy storage capacitor is grounded.

4. The vehicle door lock control circuit according to claim 3, characterized in that: The energy storage subcircuit further includes: a voltage dividing module and / or a voltage stabilizing module; The voltage dividing module includes a first resistor and a second resistor; The first end of the first resistor and the first end of the second resistor are both connected to the energy storage capacitor, the second end of the first resistor is connected to the power supply, and the second end of the second resistor is grounded; The voltage stabilizing module includes a voltage stabilizing resistor and a reverse diode; The first end of the voltage-stabilizing resistor is connected to the power supply, and the second end of the voltage-stabilizing resistor and the reverse diode are both connected to the power-off detection subcircuit.

5. The vehicle door lock control circuit according to claim 3, characterized in that: The energy storage subcircuit also includes: a current limiting diode; The current limiting diode is connected to the energy storage capacitor.

6. The vehicle door lock control circuit according to claim 1, characterized in that: The first disconnection detection subcircuit comprises: a third transistor, a fourth transistor, a first diode, a third resistor and a fourth resistor; The base of the third transistor is connected to the first end of the third resistor, the second end of the third resistor is connected to the first diode, the collector of the third transistor and the base of the fourth transistor are both connected to the fourth resistor, the emitter of the third transistor is grounded, the emitter of the fourth transistor is connected to the power supply, and the collector of the fourth transistor is connected to the first end of the door lock motor.

7. The vehicle door lock control circuit according to claim 1, characterized in that: The second disconnection detection subcircuit comprises: a fifth transistor, a second diode and a fifth resistor; The base of the fifth transistor is connected to the second diode and the fifth resistor respectively, the collector of the fifth transistor is connected to the second end of the door lock motor, and the emitter of the fifth transistor is grounded.

8. The vehicle door lock control circuit according to any one of claims 1 to 7, characterized in that: Also includes: A first anti-reverse diode and / or a second anti-reverse diode; The positive electrode of the first anti-reverse diode is connected to the energy storage sub-circuit, and the negative electrode of the first anti-reverse diode is connected to the first end of the door lock motor; The anode of the second anti-reverse diode is connected to the first disconnection detection sub-circuit, and the cathode of the second anti-reverse diode is connected to the first end of the door lock motor.

9. A vehicle door lock, characterized in that: The invention comprises a vehicle door lock control circuit as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: It comprises the vehicle door lock control circuit as claimed in any one of claims 1 to 8 or the vehicle door lock as claimed in claim 9.

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