A vehicle and a door lock system thereof

Abstract

The utility model discloses a kind of vehicle and its door lock system, it is related to door lock technical field.Vehicle door lock system includes: door lock, door lock driving device, door lock driving circuit and controller;Door lock driving device includes driving motor and transmission structure;Door lock driving circuit includes first control end, second control end, third control end and door lock state feedback unit;First control end and the first end of driving motor are electrically connected, second control end and third control end are electrically connected with the second end of driving motor;Door lock state feedback unit is electrically connected between third control end and the second end of driving motor;The control signal output end of controller is electrically connected with first control end, second control end and third control end respectively, and controller is used to control the level state of first control end, second control end and third control end respectively, to control driving motor driving transmission structure adjustment door lock current state.The utility model improves the accuracy and stability of door lock state adjustment.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and in particular to a vehicle and its door lock system. Background Technology

[0002] Vehicle door lock systems are an important component of automotive safety systems, and their function directly affects the safety and convenience of vehicle use. In existing technologies, vehicle door lock systems can switch between locked and unlocked states by unidirectionally energizing a drive motor, which is widely used in various vehicle models.

[0003] However, existing vehicle door lock systems have technical flaws. Their door lock state switching relies too heavily on determining the current lock state. In an emergency requiring unlocking, an incorrect determination of the current lock state could cause the drive motor to mistakenly switch the lock to the locked state, leading to unlocking failure. Furthermore, repeatedly powering on the drive motor can cause instability in the vehicle door lock state, making it difficult to determine the final state of the door lock. Utility Model Content

[0004] This invention provides a vehicle and its door lock system, which improves the accuracy and stability of door lock status adjustment by adding a door lock status feedback unit to the door lock drive circuit.

[0005] The first aspect of this utility model provides a vehicle door lock system, which includes: a door lock, a door lock drive device, a door lock drive circuit, and a controller;

[0006] The door lock drive device includes a drive motor and a transmission structure. The drive signal output terminal of the drive motor is electrically connected to the control terminal of the transmission structure, and the transmission structure is mechanically connected to the door lock.

[0007] The door lock drive circuit includes a first control terminal, a second control terminal, a third control terminal, and a door lock status feedback unit; the first control terminal is electrically connected to a first terminal of the drive motor, and the second control terminal and the third control terminal are both electrically connected to a second terminal of the drive motor; the door lock status feedback unit is electrically connected between the third control terminal and the second terminal of the drive motor.

[0008] The controller's control signal output terminal is electrically connected to the first control terminal, the second control terminal, and the third control terminal, respectively. The controller is used to control the level states of the first control terminal, the second control terminal, and the third control terminal, respectively, so as to control the drive motor to drive the transmission structure to adjust the current state of the door lock.

[0009] Optionally, the state of the door lock includes a locked state and an unlocked state;

[0010] When the current state of the door lock is locked, the door lock state feedback unit is closed.

[0011] When the current state of the door lock is unlocked, the door lock state feedback unit is disconnected.

[0012] Optionally, when there is a level difference between the first control terminal and the third control terminal, the level state of the second control terminal is zero, and the door lock state feedback unit is in a closed state, the drive motor is used to drive the transmission structure to adjust the current state of the door lock;

[0013] When there is a level difference between the first control terminal and the third control terminal, the level state of the second control terminal is zero, and the door lock status feedback unit is in the off state, the drive motor stops running.

[0014] Optionally, when there is a level difference between the first control terminal and the second control terminal, and the level state of the third control terminal is zero, the drive motor is used to drive the transmission structure to adjust the current state of the door lock.

[0015] Optionally, the door lock drive circuit further includes a protection unit;

[0016] The protection unit is electrically connected between the first control terminal and the first end of the drive motor, and / or the protection unit is electrically connected between the second control terminal and the second end of the drive motor, and / or the protection unit is electrically connected between the third control terminal and the second end of the drive motor.

[0017] Optionally, the vehicle door lock system also includes: a door lock status feedback module and an interaction module;

[0018] The current status signal output terminal of the door lock status feedback module is connected to the current status signal input terminal of the controller, and the target status signal output terminal of the interaction module is connected to the target status signal input terminal of the controller.

[0019] The controller is further configured to acquire the current state of the door lock and the target state of the door lock based on the current state signal provided by the door lock state feedback module and the target state signal provided by the interaction module, respectively, and control the level states of the first control terminal, the second control terminal and the third control terminal based on at least one of the target state of the door lock and the current state of the door lock, so as to control the drive motor to drive the transmission structure to adjust the current state of the door lock to the target state of the door lock.

[0020] Optionally, the vehicle door lock system may also include: a vehicle status detection module;

[0021] The vehicle status signal output terminal of the vehicle status detection module is connected to the vehicle status signal input terminal of the controller;

[0022] The controller is also used to obtain the operating status of the vehicle based on the vehicle status signal provided by the vehicle status detection module, and when it is determined that the vehicle has an operating fault based on the operating status of the vehicle, control the level states of the first control terminal, the second control terminal and the third control terminal respectively, so as to control the drive motor to drive the transmission structure to adjust the current state of the door lock to the unlocked state.

[0023] The second aspect of this utility model provides a vehicle, which includes: a frame and a vehicle door lock system as described above disposed within the frame.

[0024] The technical solution of this utility model includes a door lock, a door lock drive device, a door lock drive circuit, and a controller in a vehicle door lock system. The door lock drive device incorporates a drive motor and a transmission structure, with the drive motor's drive signal output terminal electrically connected to the control terminal of the transmission structure. The transmission structure is mechanically connected to the door lock. This allows the drive motor to provide a drive signal to the transmission structure via its drive signal output terminal, and the transmission structure to provide the drive signal to the door lock. This enables the door lock to respond to the drive signal provided by the drive motor, improving the efficiency of door lock state switching and the stability of mechanical transmission. Furthermore, the door lock drive circuit includes a first control terminal, a second control terminal, and a third control terminal. The first control terminal is electrically connected to the first terminal of the drive motor, and both the second and third control terminals are electrically connected to the second terminal of the drive motor. The controller's control signal output terminal is also electrically connected to each of these terminals. This allows the controller to control the level states of the first, second, and third control terminals, thereby controlling the drive motor to drive the transmission structure and adjust the current state of the door lock. The door lock state can be switched by unidirectionally energizing the drive motor through the first and second control terminals, which simplifies the structure of the vehicle door lock system and reduces manufacturing costs. Furthermore, by incorporating a door lock state feedback unit electrically connected between the third control terminal and the second terminal of the drive motor in the door lock drive circuit, emergency unlocking of the door lock can be achieved through the first and third control terminals without requiring the controller to determine the current state of the door lock. This avoids mistakenly switching the door lock to the locked state when unlocking is needed, improving the accuracy and stability of door lock state adjustment.

[0025] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a vehicle door lock system provided in an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of another vehicle door lock system provided in this embodiment of the present invention;

[0029] Figure 3 This is a flowchart illustrating a control method for a vehicle door lock system provided in an embodiment of this utility model. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] Figure 1 This is a structural schematic diagram of a vehicle door lock system provided in an embodiment of this utility model, as shown below. Figure 1As shown, the vehicle door lock system includes: a door lock 1, a door lock drive device 2, a door lock drive circuit 3, and a controller 4; the door lock drive device 2 includes a drive motor 21 and a transmission structure 22, the drive signal output terminal 211 of the drive motor 21 is electrically connected to the control terminal 221 of the transmission structure 22, and the transmission structure 22 is mechanically connected to the door lock 1; the door lock drive circuit 3 includes a first control terminal 01, a second control terminal 02, a third control terminal 03, and a door lock status feedback unit 04; the first control terminal 01 is electrically connected to the first terminal 212 of the drive motor 21, the second control terminal 02, the third control terminal 03, and the third control terminal 04; the first control terminal 01 is electrically connected to the first terminal 212 of the drive motor 21, the third control terminal 02, the fourth control terminal 03, the fifth control terminal 02, the sixth control terminal 03, the third control terminal 03, and the third control terminal 04. The second control terminal 02 and the third control terminal 03 are both electrically connected to the second terminal 213 of the drive motor 21; the door lock status feedback unit 04 is electrically connected between the third control terminal 03 and the second terminal 213 of the drive motor 21; the control signal output terminal 41 of the controller 4 is electrically connected to the first control terminal 01, the second control terminal 02 and the third control terminal 03 respectively, and the controller 4 is used to control the level states of the first control terminal 01, the second control terminal 02 and the third control terminal 03 respectively, so as to control the drive motor 21 to drive the transmission structure 22 to adjust the current state of the door lock 1.

[0033] Specifically, door lock 1 is used to lock and unlock the vehicle's side door, and door lock drive device 2 is used to control the door lock 1 to switch between locked and unlocked states. Specifically, door lock drive device 2 includes a drive motor 21 and a transmission structure 22. The drive signal output terminal 211 of the drive motor 21 is electrically connected to the control terminal 221 of the transmission structure 22, so that the drive motor 21 can provide a drive signal to the transmission structure 22 through the drive signal output terminal 211. Simultaneously, the transmission structure 22 is mechanically connected to the door lock 1, so that the transmission structure 22 can provide a drive signal to the door lock 1. This allows the door lock 1 to respond to the drive signal provided by the drive motor 21, achieving state switching and improving the efficiency of door lock 1 state switching and mechanical transmission stability. For example, the transmission structure 22 may include a worm gear, a worm wheel, and a push-pull switching structure. The control terminal of the worm gear is connected to the drive signal output terminal 211 of the drive motor 21, and the worm gear is meshed with the worm wheel, so that the drive motor 21 can drive the worm gear to rotate the worm wheel through the drive signal. The turbine is also mechanically connected to the push-pull switching structure, which in turn is mechanically connected to the door lock 1. This allows the turbine to rotate, driving the push-pull switching structure to move, which in turn moves the door lock 1 up and down, thus switching the state of the door lock 1. It can be understood that each time the drive motor 21 is energized, the drive motor 21 drives the transmission structure 22 to control the door lock 1 to complete one state switch, i.e., from the locked state to the unlocked state, or from the unlocked state to the locked state. The door lock 1's state switching can be achieved by unidirectionally energizing the drive motor 21, simplifying the vehicle door lock system structure, reducing manufacturing costs, and providing self-locking and deceleration functions. The push-pull switching structure enables cyclic switching of the door lock 1 between its up and down positions, enhancing the reliability of the mechanical transmission and the accuracy of the door lock 1's state switching.

[0034] The door lock drive circuit 3 is specifically used to energize the drive motor 21 to control its operating state. The door lock drive circuit 3 includes a first control terminal 01, a second control terminal 02, and a third control terminal 03. The first control terminal 01 is electrically connected to the first terminal 212 of the drive motor 21, and both the second control terminal 02 and the third control terminal 03 are electrically connected to the second terminal 213 of the drive motor 21. The controller 4 may specifically include a microprocessor, such as a central processing unit (CPU), and may also include other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The control signal output terminal 41 of the controller 4 is electrically connected to the first control terminal 01, the second control terminal 02, and the third control terminal 03, respectively, so that the controller 4 can control the level states of the first control terminal 01, the second control terminal 02, and the third control terminal 03, so as to control the drive motor 21 to drive the transmission structure 22 to adjust the current state of the door lock 1. Optionally, when there is a level difference between the first control terminal 01 and the second control terminal 02, and the level state of the third control terminal 03 is zero, the drive motor 21 is used to drive the transmission structure 22 to adjust the current state of the door lock 1. Understandably, when there is a level difference between the first control terminal 01 and the second control terminal 02, for example, when the controller 4 controls the level of the first control terminal 01 to a high level, the level of the second control terminal 02 to a low level, and the level of the third control terminal 03 to a zero level, the drive motor 21 will be energized. At this time, the drive motor 21 will provide a drive signal to the transmission structure 22 through the drive signal output terminal 211, so that the transmission structure 22 controls the door lock 1 to switch from the locked state to the unlocked state, or from the unlocked state to the locked state. By simply controlling the level states of the first control terminal 01, the second control terminal 02, and the third control terminal 03 through the controller 4, the switching between the locked and unlocked states of the door lock 1 can be achieved, improving the response speed and working efficiency of the vehicle door lock system.

[0035] In addition, the door lock drive circuit 3 also includes a door lock status feedback unit 04, which is electrically connected between the third control terminal 03 and the second terminal 213 of the drive motor 21. The door lock status feedback unit 04 may specifically include a door lock status feedback switch, or other mechanisms or electronic components capable of controlling the on / off state of the circuit between the third control terminal 03 and the second terminal 213 of the drive motor 21; this utility model does not specifically limit this. The door lock status feedback unit 04 is specifically used to obtain the current state of the door lock 1 and maintain consistency with it. Optionally, when the current state of the door lock 1 is locked, the door lock status feedback unit 04 is closed; when the current state of the door lock 1 is unlocked, the door lock status feedback unit 04 is open, so that the accuracy and stability of the door lock status adjustment can be ensured when the current state of the door lock 1 needs to be adjusted to the unlocked state.

[0036] Optionally, when there is a level difference between the first control terminal 01 and the third control terminal 03, the level of the second control terminal 02 is zero, and the door lock status feedback unit 04 is closed, the drive motor 21 drives the transmission structure 22 to adjust the current state of the door lock 1; when there is a level difference between the first control terminal 01 and the third control terminal 03, the level of the second control terminal 02 is zero, and the door lock status feedback unit 04 is open, the drive motor 21 stops running. It is understood that when the vehicle experiences a malfunction, such as a collision, and the vehicle door lock system needs to urgently unlock the door lock 1, the controller 4 can control the level difference between the first control terminal 01 and the third control terminal 03, for example, controlling the level of the first control terminal 01 to be high, controlling the level of the third control terminal 03 to be low, and controlling the level of the second control terminal 02 to be zero. If the door lock 1 is in the locked state, the door lock status feedback unit 04 is in the closed state, thereby making the circuit between the third control terminal 03 and the second terminal 213 of the drive motor 21 conductive. The drive motor 21 is energized, and the transmission structure 22 can control the door lock 1 to switch from the locked state to the unlocked state, thus completing the emergency unlocking of the door lock 1. After the emergency unlocking of the door lock 1 is completed, the door lock status feedback unit 04 will switch to the open state to ensure that the state of the door lock 1 remains stable during multiple unlocking operations. If the door lock 1 is in the unlocked state, the door lock status feedback unit 04 is in the open state, thereby making the circuit between the third control terminal 03 and the second terminal 213 of the drive motor 21 disconnected. The drive motor 21 cannot be energized, so the transmission structure 22 will not adjust the current state of the door lock 1, thus keeping the door lock 1 in the unlocked state. This avoids accidentally switching the door lock 1 to the locked state and realizes the emergency unlocking of the door lock 1 without the controller 4 judging the current state of the door lock 1, improving the accuracy and stability of the door lock status adjustment.

[0037] In this embodiment, a door lock system includes a door lock, a door lock drive device, a door lock drive circuit, and a controller. The door lock drive device incorporates a drive motor and a transmission structure, with the drive motor's drive signal output terminal electrically connected to the control terminal of the transmission structure. The transmission structure is mechanically connected to the door lock. This allows the drive motor to provide a drive signal to the transmission structure via its drive signal output terminal, and the transmission structure to provide the drive signal to the door lock. This enables the door lock to respond to the drive signal provided by the drive motor, improving the efficiency of door lock state switching and the stability of mechanical transmission. The door lock drive circuit includes a first control terminal, a second control terminal, and a third control terminal. The first control terminal is electrically connected to the first terminal of the drive motor, and both the second and third control terminals are electrically connected to the second terminal of the drive motor. The controller's control signal output terminal is electrically connected to each of these terminals, allowing the controller to control the level states of the first, second, and third control terminals, thereby controlling the drive motor to drive the transmission structure and adjust the current state of the door lock. The door lock state can be switched by unidirectionally energizing the drive motor through the first and second control terminals, which simplifies the structure of the vehicle door lock system and reduces manufacturing costs. Furthermore, by incorporating a door lock state feedback unit electrically connected between the third control terminal and the second terminal of the drive motor in the door lock drive circuit, emergency unlocking of the door lock can be achieved through the first and third control terminals without requiring the controller to determine the current state of the door lock. This avoids mistakenly switching the door lock to the locked state when unlocking is needed, improving the accuracy and stability of door lock state adjustment.

[0038] Optional, Figure 2 This is a schematic diagram of another vehicle door lock system provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the door lock drive circuit 3 also includes a protection unit 5; the protection unit 5 is electrically connected between the first control terminal 01 and the first terminal 212 of the drive motor 21, and / or the protection unit 5 is electrically connected between the second control terminal 02 and the second terminal 213 of the drive motor 21, and / or the protection unit 5 is electrically connected between the third control terminal 03 and the second terminal 213 of the drive motor 21.

[0039] The protection unit 5 may include a current-limiting resistor, a reverse protection diode, or other circuit protection components to ensure the stable operation of the door lock drive circuit 3 and improve the security of the vehicle door lock system. Specifically, the protection unit 5 may be electrically connected between the first control terminal 01 and the first terminal 212 of the drive motor 21, between the second control terminal 02 and the second terminal 213 of the drive motor 21, or between the third control terminal 03 and the second terminal 213 of the drive motor 21, to protect the input and output circuits of the drive motor 21. The current-limiting resistor limits the current flowing through the drive motor 21 to prevent overheating damage to the drive motor 21 or the door lock drive circuit 3 due to overload or short circuit; the reverse protection diode ensures that the current flows unidirectionally only from the first control terminal 01 to the drive motor 21, and from the drive motor 21 to the second control terminal 02 and the third control terminal 03, avoiding damage or interference to the door lock drive circuit 3 by reverse current. Protection unit 5 ensures that the door lock drive circuit 3 can operate stably under complex working conditions, improving the service life of the vehicle door lock system and the accuracy and stability of door lock status adjustment.

[0040] Optional, continue to refer to Figure 2 The vehicle door lock system also includes: a door lock status feedback module 6 and an interaction module 7; the current status signal output terminal 61 of the door lock status feedback module 6 is connected to the current status signal input terminal 42 of the controller 4, and the target status signal output terminal 71 of the interaction module 7 is connected to the target status signal input terminal 43 of the controller 4; the controller 4 is also used to obtain the current status of the door lock 1 and the target status of the door lock 1 according to the current status signal provided by the door lock status feedback module 6 and the target status signal provided by the interaction module 7, and to control the level states of the first control terminal 01, the second control terminal 02 and the third control terminal 03 according to at least one of the target status of the door lock 1 and the current status of the door lock 1, so as to control the drive motor 21 to drive the transmission structure 22 to adjust the current status of the door lock 1 to the target status of the door lock 1.

[0041] Specifically, the current status signal output terminal 61 of the door lock status feedback module 6 is connected to the current status signal input terminal 42 of the controller 4, and the target status signal output terminal 71 of the interaction module 7 is connected to the target status signal input terminal 43 of the controller 4, so that the controller 4 can obtain the current status of the door lock 1 through the door lock status feedback module 6 and obtain the target status of the door lock 1 through the interaction module 7. For example, the door lock status feedback module 6 may include a mechanical switch, which can be opened when the current status of the door lock 1 is locked and closed when the current status of the door lock 1 is unlocked, so that the controller 4 can obtain the open / closed status of the door lock status feedback module 6 through the current status signal input terminal 42, thereby indirectly obtaining the current status of the door lock 1. The mechanical switch has a simple structure and can ensure immediate feedback of the current status of the door lock 1. The interaction module 7 may specifically include a touch screen or physical buttons, so that the user can select the desired status of the door lock 1 by operating the touch screen or physical buttons, thereby enabling the controller 4 to obtain the target status of the door lock 1 through the target status signal input terminal 43. The interaction module 7 allows users to directly select the desired state of the door lock 1, ensuring that the vehicle door lock system can adapt to different user needs.

[0042] After the controller 4 obtains the target state and the current state of the door lock 1, it will control the level states of the first control terminal 01, the second control terminal 02 and the third control terminal 03 respectively according to at least one of the target state and the current state of the door lock 1, so as to control the drive motor 21 to drive the transmission structure 22 to adjust the current state of the door lock 1 to the target state of the door lock 1. In an exemplary embodiment, when the controller 4 determines that the target state of the door lock 1 is locked and the current state of the door lock 1 is unlocked, or the target state of the door lock 1 is unlocked and the current state of the door lock 1 is locked, that is, when it is necessary to adjust the current state of the door lock 1, the controller 4 can control the level of the first control terminal 01 to be high, control the level of the second control terminal 02 to be low, and control the level of the third control terminal 03 to be zero. At this time, the drive motor 21 will be powered on and will provide a drive signal to the transmission structure 22 through the drive signal output terminal 211, so that the transmission structure 22 controls the door lock 1 to switch from the locked state to the unlocked state, or from the unlocked state to the locked state, thereby improving the response speed and working efficiency of the vehicle door lock system.

[0043] In another exemplary embodiment, when the controller 4 determines that the target state of the door lock 1 is the unlocked state, it can also control the level of the first control terminal 01 to be high, control the level of the second control terminal 02 to be zero, and control the level of the third control terminal 03 to be low. This allows the door lock state feedback unit 04 to ensure that the current state of the door lock 1 is adjusted to the unlocked state without needing to determine the current state of the door lock 1, thus avoiding the door lock 1 being mistakenly switched to the locked state and improving the accuracy and stability of the door lock state adjustment.

[0044] Optional, continue to refer to Figure 2 The vehicle door lock system also includes: a vehicle status detection module 8; the vehicle status signal output terminal 81 of the vehicle status detection module 8 is connected to the vehicle status signal input terminal 44 of the controller 4; the controller 4 is also used to obtain the vehicle's operating status based on the vehicle status signal provided by the vehicle status detection module 8, and when it is determined that the vehicle has an operating fault based on the vehicle's operating status, it controls the level states of the first control terminal 01, the second control terminal 02 and the third control terminal 03 respectively, so as to control the drive motor 21 to drive the transmission structure 22 to adjust the current state of the door lock 1 to the unlocked state.

[0045] Specifically, the vehicle status signal output terminal 81 of the vehicle status detection module 8 is connected to the vehicle status signal input terminal 44 of the controller 4, so that the controller 4 can obtain the vehicle's operating status through the vehicle status detection module 8. For example, the vehicle status detection module 8 may include vehicle status detection sensors configured inside the vehicle, such as airbag sensors, battery voltage sensors, and communication module status monitors. The vehicle status detection module 8 can detect the vehicle's operating status in real time and provide the detected real-time operating status information to the controller 4 to assist the controller 4 in determining whether the vehicle is in an abnormal operating state. When the controller 4 determines, based on the vehicle status signal fed back by the vehicle status detection module 8, that the vehicle has an operational fault such as airbag deployment, vehicle power depletion, or vehicle communication disorder, it will control the level of the first control terminal 01 to be high, the level of the second control terminal 02 to be zero, and the level of the third control terminal 03 to be low. This allows the door lock status feedback unit 04 to ensure that the current state of the door lock 1 is adjusted to the unlocked state without needing to determine the current state of the door lock 1. This significantly shortens the response time of the door lock 1, avoids accidentally switching the door lock 1 to the locked state, improves the accuracy and stability of adjusting the door lock to the unlocked state when the vehicle has an operational fault, and reduces the life risk to the vehicle occupants when the vehicle has an operational fault. This is suitable for vehicle emergency rescue scenarios.

[0046] This utility model provides a vehicle, which includes a frame and a vehicle door lock system of the above embodiment disposed within the frame.

[0047] Therefore, the vehicle provided in this embodiment has the structure and operation of the vehicle door lock system of the above embodiment, and can achieve the effect of the vehicle door lock system of the above embodiment. The similarities can be referred to the above description, and will not be repeated here.

[0048] Based on the same inventive concept, this utility model embodiment also provides a control method for a vehicle door lock system, applicable to the vehicle door lock system described in the above embodiment. Figure 3 This is a flowchart illustrating a control method for a vehicle door lock system provided in an embodiment of this utility model, as shown below. Figure 3 As shown, the control method for the vehicle door lock system includes:

[0049] S101, the controller obtains the target state and current state of the door lock based on the door lock status feedback module and the interaction module, respectively.

[0050] Specifically, the controller can obtain the current state of the door lock through the door lock status feedback module and the target state of the door lock through the interaction module. For example, the door lock status feedback module may include a mechanical switch that can be opened when the door lock is currently locked and closed when it is currently unlocked, allowing the controller to obtain the open / closed state of the door lock status feedback module through the current state signal input terminal, thereby indirectly obtaining the current state of the door lock. The mechanical switch has a simple structure and ensures immediate feedback of the door lock's current state. The interaction module may include a touchscreen or physical buttons, allowing the user to select the desired door lock state by operating the touchscreen or physical buttons, thus enabling the controller to obtain the target state of the door lock through the target state signal input terminal. The interaction module facilitates direct selection of the desired door lock state by the user, ensuring that the vehicle door lock system can adapt to different user needs.

[0051] S102. The controller controls the current level of the first control terminal, the second control terminal, and the third control terminal respectively according to at least one of the target state and the current state of the door lock, so as to control the drive motor to adjust the current state of the door lock to the target state of the door lock.

[0052] Specifically, after the controller obtains the target state and the current state of the door lock, it will control the level states of the first control terminal, the second control terminal, and the third control terminal respectively according to at least one of the target state and the current state of the door lock, so as to control the drive motor to drive the transmission structure to adjust the current state of the door lock to the target state of the door lock.

[0053] Optionally, the controller controls the level states of the first control terminal, the second control terminal, and the third control terminal respectively based on at least one of the target state and the current state of the door lock. This includes: when the target state of the door lock is locked and the current state is unlocked, or when the target state of the door lock is unlocked and the current state is locked, the controller adjusts the current level states of the first control terminal, the second control terminal, and the third control terminal to a first preset state. The first preset state includes a level difference between the first control terminal and the second control terminal, and the third control terminal being at zero level. The duration of the third control terminal being at zero level is the first preset duration. After the controller short-circuits the first and second control terminals for a second preset duration, it obtains the current state of the door lock. If the current state of the door lock is different from the target state of the door lock, it returns to sequentially executing the steps of adjusting the current level of the first, second, and third control terminals to the first preset state and obtaining the current state of the door lock after short-circuiting the first and second control terminals for a second preset duration, until the current state of the door lock is the target state of the door lock, at which point the current level of the first, second, and third control terminals is adjusted to zero level.

[0054] Specifically, when the controller determines that the target state of the door lock is locked and the current state of the door lock is unlocked, or the target state of the door lock is unlocked and the current state of the door lock is locked, i.e., when the current state of the door lock needs to be adjusted, the controller can control a level difference between the first control terminal and the second control terminal. For example, control the level of the first control terminal to be high, control the level of the second control terminal to be low, and control the level of the third control terminal to be zero. The controller can also control the duration of the level difference between the first control terminal and the second control terminal and the duration of the zero level of the third control terminal to be a first preset duration. At this time, the drive motor will be powered on and will provide a drive signal to the transmission structure through the drive signal output terminal, so that the transmission structure controls the door lock to switch from the locked state to the unlocked state, or from the unlocked state to the locked state, thereby improving the response speed and working efficiency of the vehicle door lock system.

[0055] After a level difference exists between the first and second control terminals, and the third control terminal remains at zero for a duration equal to a first preset time, the controller will short-circuit the first and second control terminals to clear residual charge and prevent overvoltage or interference to the drive motor or door lock drive circuit, thus enhancing the stability and security of the door lock drive circuit. After the first and second control terminals are short-circuited for a second preset time, the controller will continue to obtain the current state of the door lock through the door lock status feedback module and compare the adjusted current state with the target state. If the current state and the target state are consistent, the door lock status adjustment is successful; if they are inconsistent, the adjustment has failed. If the controller determines that the door lock status adjustment has failed, it will again adjust the current level of the first, second, and third control terminals to the first preset state to drive the transmission structure again to adjust the door lock status. After the first and second control terminals are short-circuited for a second preset time, the controller will again obtain the current state of the door lock. Once the controller determines that the current state of the door lock matches the target state, it adjusts the voltage levels of the first, second, and third control terminals to zero to end the adjustment of the door lock state, thus improving the accuracy and stability of the door lock state adjustment.

[0056] Optionally, the controller controls the level states of the first control terminal, the second control terminal, and the third control terminal respectively based on at least one of the target state and the current state of the door lock. The controller further includes: when the target state of the door lock is unlocked, adjusting the current level states of the first control terminal, the second control terminal, and the third control terminal to a second preset state; the second preset state includes a level difference between the first control terminal and the third control terminal, the second control terminal being at zero level, and the duration of the level difference between the first control terminal and the third control terminal and the second control terminal being at zero level being a first preset duration; the controller repeatedly executes the step of adjusting the current level states of the first control terminal, the second control terminal, and the third control terminal to the second preset state, and records the number of cycles; when the number of cycles reaches a preset number of cycles, the controller adjusts the current level states of the first control terminal, the second control terminal, and the third control terminal to zero level.

[0057] Specifically, when the controller determines that the target state of the door lock is the unlocked state, it can also control the level difference between the first control terminal and the third control terminal. For example, it can control the level state of the first control terminal to be high, control the level state of the third control terminal to be low, and control the level state of the second control terminal to be zero. The controller can also control the level difference between the first control terminal and the third control terminal and the duration of the zero level of the second control terminal to be a first preset duration. If the door lock is in the locked state, the door lock status feedback unit is in the closed state, thus connecting the circuit between the third control terminal and the second terminal of the drive motor. The drive motor is energized, enabling the transmission structure to control the door lock to switch from the locked state to the unlocked state, thereby unlocking the door lock. After unlocking, the door lock status feedback unit switches to the open state to ensure the door lock's state remains stable during multiple unlocking operations. If the door lock is in the unlocked state, the door lock status feedback unit is in the open state, thus disconnecting the circuit between the third control terminal and the second terminal of the drive motor. The drive motor is not energized, preventing the transmission structure from adjusting the current state of the door lock, thus keeping the door lock in the unlocked state. This avoids accidentally switching the door lock to the locked state and achieves door unlocking without the controller needing to determine the current state of the door lock, improving the accuracy and stability of door lock status adjustment.

[0058] Furthermore, after a level difference exists between the first and third control terminals, and the second control terminal remains at zero for a duration equal to a first preset time, the controller will repeatedly execute the step of adjusting the current level states of the first, second, and third control terminals to a second preset state, recording the number of cycles. This process continues until the preset number of cycles is reached, at which point the controller adjusts the current level states of all three control terminals to zero. By cyclically energizing the drive motor, the controller avoids the possibility of door lock unlocking failure due to mechanical jamming or signal malfunction during a single power-on, thus ensuring that the door lock's state can be successfully adjusted to the unlocked state.

[0059] Optionally, the control method for the vehicle door lock system further includes: the controller acquiring the vehicle's operating status in real time based on the vehicle status detection module; when the controller determines that the vehicle has an operating fault based on the vehicle's current operating status, adjusting the current level states of the first control terminal, the second control terminal, and the third control terminal to a second preset state respectively; the second preset state includes a level difference between the first control terminal and the third control terminal, the second control terminal being at zero level, and the duration of the level difference between the first control terminal and the third control terminal and the second control terminal being at zero level being a first preset duration; the controller repeatedly executes the step of adjusting the current level states of the first control terminal, the second control terminal, and the third control terminal to the second preset state, and records the number of cycles; when the number of cycles reaches a preset number of cycles, the controller adjusts the current level states of the first control terminal, the second control terminal, and the third control terminal to zero level.

[0060] Specifically, the controller can acquire the vehicle's operating status through the vehicle status detection module. For example, the vehicle status detection module may include vehicle status sensors configured inside the vehicle, such as airbag sensors, battery voltage sensors, and communication module status monitors. The vehicle status detection module can detect the vehicle's operating status in real time and provide the detected real-time operating status information to the controller to assist the controller in determining whether the vehicle is in an abnormal operating state. When the controller determines, based on the vehicle status signals fed back by the vehicle status detection module, that the vehicle has an operating fault such as airbag deployment, low battery, or communication disorder, it will control a level difference between the first control terminal and the third control terminal. For example, it will control the level state of the first control terminal to be high, control the level state of the third control terminal to be low, and control the level state of the second control terminal to be zero. The controller can control the level difference between the first and third control terminals and the duration of the zero level state of the second control terminal for a first preset duration. This allows the door lock status feedback unit to ensure that the current state of the door lock is adjusted to the unlocked state without judging the current state of the door lock. This significantly shortens the response time of the door lock, avoids accidentally switching the door lock to the locked state, and ensures that the door lock status remains stable when the door lock is unlocked multiple times. This improves the accuracy and stability of adjusting the door lock to the unlocked state when the vehicle is malfunctioning, and reduces the life risk to the occupants of the vehicle when the vehicle is malfunctioning. It is suitable for vehicle emergency rescue scenarios.

[0061] Furthermore, after a level difference exists between the first and third control terminals, and the second control terminal remains at zero for a duration equal to a first preset time, the controller will repeatedly execute the step of adjusting the current level states of the first, second, and third control terminals to a second preset state, recording the number of cycles. This process continues until the preset number of cycles is reached, at which point the controller adjusts the current level states of all three control terminals to zero. By cyclically energizing the drive motor, the controller avoids the possibility of door lock unlocking failure due to mechanical jamming or signal malfunction during a single power-on, thus ensuring that the door lock's state can be successfully adjusted to the unlocked state.

[0062] The control method for the vehicle door lock system described above is applicable to the vehicle door lock system provided in any embodiment of this utility model, and possesses the corresponding beneficial effects of the vehicle door lock system. Technical details not described in detail in this embodiment can be found in the vehicle door lock system provided in any embodiment of this utility model.

[0063] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this utility model can be achieved, and no limitation is imposed herein.

[0064] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A vehicle door lock system, characterized in that, include: Door locks, door lock drive devices, door lock drive circuits, and controllers; The door lock drive device includes a drive motor and a transmission structure. The drive signal output terminal of the drive motor is electrically connected to the control terminal of the transmission structure, and the transmission structure is mechanically connected to the door lock. The door lock drive circuit includes a first control terminal, a second control terminal, a third control terminal, and a door lock status feedback unit; the first control terminal is electrically connected to a first terminal of the drive motor, and the second control terminal and the third control terminal are both electrically connected to a second terminal of the drive motor; the door lock status feedback unit is electrically connected between the third control terminal and the second terminal of the drive motor. The controller's control signal output terminal is electrically connected to the first control terminal, the second control terminal, and the third control terminal, respectively. The controller is used to control the level states of the first control terminal, the second control terminal, and the third control terminal, respectively, so as to control the drive motor to drive the transmission structure to adjust the current state of the door lock.

2. The vehicle door lock system according to claim 1, characterized by The state of the door lock includes a locked state and an unlocked state; When the current state of the door lock is locked, the door lock state feedback unit is closed. When the current state of the door lock is unlocked, the door lock state feedback unit is disconnected.

3. The vehicle door lock system according to claim 2, characterized in that, When there is a level difference between the first control terminal and the third control terminal, the level state of the second control terminal is zero, and the door lock state feedback unit is in a closed state, the drive motor is used to drive the transmission structure to adjust the current state of the door lock; When there is a level difference between the first control terminal and the third control terminal, the level state of the second control terminal is zero, and the door lock status feedback unit is in the off state, the drive motor stops running.

4. The vehicle door lock system according to claim 1, characterized in that, When there is a level difference between the first control terminal and the second control terminal, and the level state of the third control terminal is zero, the drive motor is used to drive the transmission structure to adjust the current state of the door lock.

5. The vehicle door lock system according to claim 1, characterized in that, The door lock drive circuit also includes a protection unit; The protection unit is electrically connected between the first control terminal and the first end of the drive motor, and / or the protection unit is electrically connected between the second control terminal and the second end of the drive motor, and / or the protection unit is electrically connected between the third control terminal and the second end of the drive motor.

6. The vehicle door lock system according to claim 1, characterized in that, Also includes: Door lock status feedback module and interaction module; The current status signal output terminal of the door lock status feedback module is connected to the current status signal input terminal of the controller, and the target status signal output terminal of the interaction module is connected to the target status signal input terminal of the controller. The controller is further configured to acquire the current state of the door lock and the target state of the door lock based on the current state signal provided by the door lock state feedback module and the target state signal provided by the interaction module, respectively, and control the level states of the first control terminal, the second control terminal and the third control terminal based on at least one of the target state of the door lock and the current state of the door lock, so as to control the drive motor to drive the transmission structure to adjust the current state of the door lock to the target state of the door lock.

7. The vehicle door lock system according to claim 1, characterized in that, It also includes: a vehicle status detection module; The vehicle status signal output terminal of the vehicle status detection module is connected to the vehicle status signal input terminal of the controller; The controller is also used to obtain the operating status of the vehicle based on the vehicle status signal provided by the vehicle status detection module, and when it is determined that the vehicle has an operating fault based on the operating status of the vehicle, control the level states of the first control terminal, the second control terminal and the third control terminal respectively, so as to control the drive motor to drive the transmission structure to adjust the current state of the door lock to the unlocked state.

8. A vehicle characterized by comprising: Includes: a vehicle frame and a vehicle door lock system as described in any one of claims 1-7 disposed within the vehicle frame.

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