Power-on self-locking circuit, power-on and power-off method and vehicle

Abstract

The application discloses a power-on self-locking circuit, a power-on and power-off method and a vehicle, and relates to the technical field of circuits, and in particular relates to a power-on self-locking circuit, a power-on and power-off method and a vehicle. The power-on self-locking circuit comprises a signal detection unit, a control unit and a self-locking unit, wherein the signal detection unit detects a power-on control signal and outputs a power-on detection signal. The control unit processes the power-on detection signal, generates and outputs a power-on driving signal. The self-locking unit controls a relay to switch to a conduction state according to the power-on driving signal, and controls a locking switch to remain closed after the relay is in the conduction state, so that the power-on self-locking function of the circuit is realized. Similarly, the power-on self-locking circuit can also realize power-off operation, which ensures the stability and continuity of the circuit after power-on.

Description

Technical Field

[0001] This invention relates to the field of power-on control technology, and in particular to power-on self-locking circuits, power-on / off methods, and vehicles. Background Technology

[0002] With the advancement of science and technology, vehicle controllers are increasingly widely used in motorcycles and electric vehicles. Existing vehicle controllers typically have automatic power-on and power-off functions. However, vehicle controllers with automatic power-on functions may experience crashes or restarts when their operation is unstable, which can lead to the engine stalling due to a momentary power outage, thus endangering the personal safety of the user while driving. Summary of the Invention

[0003] Therefore, it is necessary to provide a power-on self-locking circuit, power-on and power-off methods, and vehicles to solve the problem that the vehicle controller with automatic power-on may freeze or restart when its operation is unstable.

[0004] A power-on self-locking circuit, the power-on self-locking circuit comprising: The signal detection unit is used to respond to the detected power-on control signal and output the power-on detection signal; A control unit, connected to the signal detection unit, is used to respond to the power-on detection signal and output a power-on drive signal; The self-locking unit includes a first diode, a second diode, a relay, a locking switch, an on-board controller, and a battery; The positive terminal of the first diode is connected to the control unit, and the negative terminal of the first diode is connected to the first terminal of the relay; The positive terminal of the second diode is connected to the first terminal of the vehicle controller, the negative terminal of the second diode is connected to the first terminal of the relay, and the second terminal of the vehicle controller is grounded. The second terminal of the relay is connected to the first terminal of the vehicle controller via the locking switch, and the third terminal of the relay is grounded via the battery. The relay is used to respond to the power-on drive signal and switch to the on state. The locking switch remains closed after the relay is in the on state.

[0005] In one embodiment, the self-locking unit includes: a first MOSFET, a second MOSFET, a first resistor, a second resistor, a first diode, a second diode, a relay, a locking switch, an on-board controller, and a battery; The gate of the first MOS transistor is connected to the control unit, the source of the first MOS transistor is grounded, and the drain of the first MOS transistor is connected to the gate of the second MOS transistor. The source of the second MOS transistor is connected to the battery, the drain of the second MOS transistor is connected to the anode of the first diode, and the second resistor is connected in parallel between the gate and the source of the second MOS transistor. The cathode of the first diode is connected to the first terminal of the relay, and the relay is energized after the power-on drive signal is input; The positive terminal of the second diode is connected to the first terminal of the vehicle controller, the negative terminal of the second diode is connected to the first terminal of the relay, and the second terminal of the vehicle controller is grounded. The second terminal of the relay is connected to the first terminal of the vehicle controller via the locking switch, and the third terminal of the relay is grounded via the battery. The locking switch remains closed after the relay is energized.

[0006] In one embodiment, the signal detection unit includes a faucet lock signal detection module, which includes a third MOS transistor, a third resistor, a fourth resistor, and a third diode. The negative terminal of the third diode is used to input the power control signal of the faucet lock, the positive terminal of the third diode is connected to the source of the third MOS transistor, and the third resistor is connected in parallel between the gate and the source of the third MOS transistor. The source of the third MOS transistor is connected to the power supply, and the drain of the third MOS transistor is grounded through the fourth resistor. The third MOS transistor responds to the faucet lock power-on control signal and outputs a first power-on detection signal from its drain.

[0007] In one embodiment, the signal detection unit includes a button signal detection module, which includes a fourth MOSFET, a fifth resistor, a sixth resistor, and a fourth diode. The negative terminal of the fourth diode is used to input the power-on button control signal, the positive terminal of the fourth diode is connected to the source of the fourth MOS transistor, and the fifth resistor is connected in parallel between the gate and the source of the fourth MOS transistor. The source of the fourth MOS transistor is connected to the power supply, and the drain of the fourth MOS transistor is grounded through the sixth resistor. The fourth MOS transistor responds to the power-on button control signal and outputs a second power-on detection signal from its drain.

[0008] A power-on self-locking method, applied in the aforementioned power-on self-locking circuit, the method comprising: When the signal detection unit detects the power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal; When the control unit inputs the power-on detection signal, it responds to the power-on detection signal and outputs a power-on drive signal; When the relay of the self-locking unit receives the power-on drive signal, it responds to the power-on drive signal and switches to the on state; After the relay is in the conducting state, the locking switch remains closed, so that the battery powers on and locks the vehicle controller via the relay and the locking switch.

[0009] In one embodiment, the signal detection unit includes a faucet lock signal detection module and a button signal detection module. When the signal detection unit detects a power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal, including: When the faucet lock signal detection module detects the faucet lock power-on control signal, it responds to the faucet lock power-on control signal and outputs a first power-on detection signal; When the button signal detection module detects the power-on button control signal, it responds to the power-on button control signal and outputs a second power-on detection signal. When the control unit inputs the power-on detection signal, responding to the power-on detection signal and outputting a power-on drive signal includes: When the control unit receives the first power-on detection signal and the second power-on detection signal, it responds to the first power-on detection signal and the second power-on detection signal and outputs a power-on drive signal.

[0010] A power-off method, applied to the aforementioned power-on self-locking circuit, the method comprising: When the signal detection unit detects the power-down control signal, it responds to the power-down control signal and outputs a power-down detection signal; When the control unit inputs the power-down detection signal, it responds to the power-down detection signal and outputs a power-down drive signal; When the relay of the self-locking unit receives the power-down drive signal, it responds to the power-down drive signal and switches to the disconnected state; After the relay is in the off state, the locking switch is opened, so that the power-on self-locking circuit is de-energized.

[0011] In one embodiment, the signal detection unit includes a faucet lock signal detection module and a button signal detection module. When the signal detection unit detects a power-down control signal, it responds to the power-down control signal and outputs a power-down detection signal, including: When the faucet lock signal detection module detects the faucet lock power-down control signal, it responds to the faucet lock power-down control signal and outputs a first power-down detection signal; When the button signal detection module detects the power-down button control signal, it responds to the power-down button control signal and outputs a second power-down detection signal. When the control unit inputs the power-down detection signal, responding to the power-down detection signal and outputting a power-down drive signal includes: When the control unit receives the first power-down detection signal and the second power-down detection signal, it responds to the first power-down detection signal and the second power-down detection signal and outputs a power-down drive signal.

[0012] A vehicle comprising the aforementioned power-on self-locking circuit.

[0013] This invention provides a power-on self-locking circuit, a power-on / off method, and a vehicle. The power-on self-locking circuit includes a signal detection unit, a control unit, and a self-locking unit. The signal detection unit detects a power-on control signal and outputs a power-on detection signal. The control unit processes the power-on detection signal, generates, and outputs a power-on drive signal. The self-locking unit controls a relay to switch to a conducting state according to the power-on drive signal, and controls a locking switch to remain closed after the relay is in the conducting state. This achieves the power-on self-locking function of the circuit. Similarly, this power-on self-locking circuit can also realize power-off operation, which ensures the stability and continuity of the circuit after power-on. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] in: Figure 1 This is a circuit diagram of a power-on self-locking circuit in one embodiment; Figure 2 This is a circuit diagram of the self-locking unit in one embodiment; Figure 3 This is a circuit diagram of the faucet lock signal detection module in one embodiment; Figure 4 This is a circuit diagram of a button signal detection module in one embodiment; Figure 5 This is a flowchart illustrating a power-on self-locking method in one embodiment; Figure 6 This is a flowchart illustrating the power-down method in one embodiment. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0017] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. 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 includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] like Figure 1 As shown, Figure 1 This is a circuit diagram of a power-on self-locking circuit in one embodiment. The power-on self-locking circuit in this embodiment includes: The signal detection unit 100 is used to respond to the detected power-on control signal and output the power-on detection signal.

[0020] The control unit 200 is connected to the signal detection unit 100 and is used to respond to the power-on detection signal and output the power-on drive signal.

[0021] The self-locking unit 300 includes a first diode D1, a second diode D2, a relay X1, a locking switch S1, an on-board controller ECU, and a battery BAT.

[0022] The positive terminal of the first diode D1 is connected to the control unit 200, and the negative terminal of the first diode D1 is connected to the first terminal of the relay X1.

[0023] The positive terminal of the second diode D2 is connected to the first terminal of the vehicle controller ECU, the negative terminal of the second diode D2 is connected to the first terminal of the relay X1, and the second terminal of the vehicle controller ECU is grounded.

[0024] The second terminal of relay X1 is connected to the first terminal of the vehicle controller ECU through the locking switch S1, and the third terminal of relay X1 is grounded through the battery BAT. Relay X1 is used to respond to the power-on drive signal and switch to the on state. The locking switch S1 remains closed after relay X1 is in the on state.

[0025] In the aforementioned power-on self-locking circuit, when the circuit receives a power-on control signal, the signal detection unit 100 detects the signal and outputs a power-on detection signal. Then, the control unit 200 receives the power-on detection signal and outputs a power-on drive signal. This power-on drive signal is transmitted to the first terminal of relay X1 through the first diode D1. When the first terminal of relay X1 receives the power-on drive signal, the coil of relay X1 is energized, and the relay is in a conducting state. After relay X1 is in a conducting state, the control locking switch S1 remains closed, ensuring that relay X1 continues to conduct. Thus, even if the control unit 200 malfunctions during driving and fails to output a power-on drive signal, because the locking switch S1 remains closed and relay X1 remains conducting, the battery BAT can continuously power the vehicle controller ECU via relay X1 and the locking switch S1, achieving the circuit's power-on self-locking function.

[0026] In one specific embodiment, such as Figure 2 As shown, the self-locking unit 300 includes: a first MOSFET Q1, a second MOSFET Q2, a first resistor R1, a second resistor R2, a first diode D1, a second diode D2, a relay X1, a locking switch S1, an on-board controller ECU, and a battery BAT; The gate of the first MOSFET Q1 is connected to the control unit 200, the source of the first MOSFET Q1 is grounded, and the drain of the first MOSFET Q1 is connected to the gate of the second MOSFET Q2. The source of the second MOSFET Q2 is connected to the battery BAT, the drain of the second MOSFET Q2 is connected to the positive terminal of the first diode D1, and the second resistor R2 is connected in parallel between the gate and the source of the second MOSFET Q2. The cathode of the first diode D1 is connected to the first terminal of the relay X1, and the relay X1 is energized after the input power-on drive signal. The positive terminal of the second diode D2 is connected to the first terminal of the vehicle controller ECU, the negative terminal of the second diode D2 is connected to the first terminal of the relay X1, and the second terminal of the vehicle controller ECU is grounded. The second terminal of relay X1 is connected to the first terminal of the vehicle controller ECU via locking switch S1, and the third terminal of relay X1 is grounded via battery BAT. Locking switch S1 remains closed after relay X1 is energized.

[0027] In this specific embodiment, when the control unit 200 outputs a power-on drive signal, the signal is transmitted to the gate of the first MOSFET Q1. The gate voltage of the first MOSFET Q1 increases, causing the first MOSFET Q1 to conduct. The source of the first MOSFET Q1 is grounded, and the drain of the first MOSFET is connected to the gate of the second MOSFET Q2, forming a low-resistance path. After the first MOSFET Q1 is turned on, current flows through the drain of the first MOSFET Q1 into the gate of the second MOSFET Q2. The source of the second MOSFET Q2 is connected to the battery BAT, and the second MOSFET Q2 is also turned on. The battery BAT provides voltage, and current flows through the drain of the second MOSFET Q2 into the positive terminal of the first diode D1. The negative current of the first diode D1 flows into the first terminal of the relay X1, causing the relay X1 to be in a conducting state. After the relay X1 is in a conducting state, the control lock switch S1 remains closed to ensure that the relay X1 continues to conduct. Even if the control unit 200 fails to output a power-on drive signal during driving, the battery BAT can still continuously power the vehicle controller ECU via relay X1 and locking switch S1 because the locking switch S1 remains closed and the relay X1 remains on, thus achieving the circuit's self-locking function.

[0028] In one specific embodiment, such as Figure 3 As shown, the signal detection unit 100 includes a faucet lock signal detection module, which includes a third MOS transistor Q3, a third resistor R3, a fourth resistor R4, and a third diode D3. The negative terminal of the third diode D3 is used to input the power-on control signal of the throttle lock, the positive terminal of the third diode D3 is connected to the source of the third MOSFET Q3, and the third resistor R3 is connected in parallel between the gate and source of the third MOSFET Q3. The source of the third MOSFET Q3 is connected to the power supply, and the drain of the third MOSFET Q3 is grounded through the fourth resistor R4. The third MOSFET Q3 responds to the faucet lock power-on control signal and outputs the first power-on detection signal from the drain.

[0029] In this specific embodiment, when the faucet lock is in the raised state, the corresponding input faucet lock power-on control signal is in a floating state. At this time, the third diode D3 is not conducting, the VGS of the third MOSFET Q3 is 0V, the third MOSFET Q3 is turned off, the voltage at the point connected to the fourth resistor R4 is pulled down to ground by R4, and the first power-on detection signal is output. The first power-on detection signal is a low-level signal, and the control unit 200 can determine that the faucet lock is in the raised state based on this.

[0030] Correspondingly, when the faucet lock is in the lowered state, the corresponding input faucet lock power-down control signal is in the button pull-down state. At this time, the third diode D3 is turned on, making the gate voltage of the third MOSFET Q3 higher. VGS is active, the third MOSFET Q3 is turned on, and a low-resistance channel is formed between the drain and the source. The voltage at the point connected to the fourth resistor R4 is close to the power supply voltage, and the first power-down detection signal is output. This first power-down detection signal is a high-level signal. Based on this, the control unit 200 can determine that the faucet lock is in the locked state.

[0031] This design ensures that the circuit can correctly detect and output the corresponding detection signal under different faucet lock states.

[0032] In one specific embodiment, such as Figure 4 As shown, the signal detection unit 100 includes a button signal detection module, which includes a fourth MOSFET Q4, a fifth resistor R5, a sixth resistor R6, and a fourth diode D4. The negative terminal of the fourth diode D4 is used to input the power-on button control signal, the positive terminal of the fourth diode D4 is connected to the source of the fourth MOSFET Q4, and the fifth resistor R5 is connected in parallel between the gate and source of the fourth MOSFET Q4. The source of the fourth MOSFET Q4 is connected to the power supply, and the drain of the fourth MOSFET Q4 is grounded through the sixth resistor R6. The fourth MOSFET Q4 responds to the power-on button control signal and outputs the second power-on detection signal from the drain.

[0033] In this specific embodiment, when the power-on button is pressed, the first terminal of the fourth diode D4 is connected to ground, the VGS voltage of the fourth MOSFET Q4 is -VCC, the fourth MOSFET Q4 is turned on, a low-resistance channel is formed between the drain and source, and the drain voltage is close to the power supply voltage (high level). The control unit detects the high-level signal, determines that the user has arrived next to the vehicle, and then pulls the relay to power on the entire vehicle. When the power-on button is pressed, the first terminal of the fourth diode D4 is connected to ground, the VGS voltage of the fourth MOSFET Q4 is -VCC, the fourth MOSFET Q4 is turned on, and the control unit 200 can detect that the output second power-on detection signal is a high-level signal, at which point it determines that the user has arrived next to the vehicle and unlocks it.

[0034] Correspondingly, when the power-on button is not pressed, there is no voltage at the first terminal of the fourth diode D4, so the fourth diode D4 is not conducting. The VGS of the fourth MOSFET Q4 is 0V, and the fourth MOSFET Q4 is in the off state. A high-impedance path is formed between the drain and source of the fourth MOSFET. The sixth resistor R6 pulls the drain voltage down to ground potential. The control unit 200 can detect that the output second power-off detection signal is a low-level signal, thus determining that the user has not reached the vehicle to unlock it.

[0035] This design ensures that the circuit can correctly detect and output the corresponding detection signal when the power-on button is in different states.

[0036] like Figure 5 As shown, Figure 5 This is a flowchart illustrating a power-on self-locking method in one embodiment, applied to the aforementioned power-on self-locking circuit. The steps provided by the power-on self-locking method in this embodiment include: S501, when the signal detection unit detects the power-on control signal, it responds to the power-on control signal and outputs the power-on detection signal.

[0037] In this step, when the signal detection unit detects a power-on control signal (such as a voltage signal or logic signal), it converts the detected power-on control signal into a power-on detection signal and outputs it to the control unit to trigger subsequent power-on operations.

[0038] Optionally, the signal detection unit includes a faucet lock signal detection module and a button signal detection module, which are responsible for detecting different types of power-on control signals, respectively. This step can be specifically executed as follows: A1: When the faucet lock signal detection module detects the faucet lock power-on control signal, it responds to the faucet lock power-on control signal and outputs the first power-on detection signal.

[0039] This indicates that the faucet lock has been detected to be in the raised state.

[0040] A2: When the button signal detection module detects the power-on button control signal, it responds to the power-on button control signal and outputs a second power-on detection signal.

[0041] This indicates that the power-on button has been detected as pressed, triggering the power-on button control signal.

[0042] S502, when the control unit inputs a power-on detection signal, responds to the power-on detection signal and outputs a power-on drive signal.

[0043] In this step, the control unit processes the power-on detection signal according to predetermined logic and conditions and generates a power-on drive signal, which is then output to the self-locking unit or other related circuit parts to start the power-on process.

[0044] Optionally, when the control unit inputs the first power-on detection signal and the second power-on detection signal, it responds to the first power-on detection signal and the second power-on detection signal and outputs a power-on drive signal.

[0045] This means that the control unit outputs a power-on drive signal when all conditions are met, i.e., when the faucet lock is in the raised state and the power-on button has been pressed, to ensure that the system starts the power-on process under all predetermined conditions.

[0046] S503, when the relay input of the self-locking unit is powered on, it responds to the power-on drive signal and switches to the on state.

[0047] S504: After the relay is in the on state, the locking switch remains closed so that the battery powers on the vehicle controller via the relay and the locking switch and locks itself.

[0048] Steps S503 and S504 above describe the key operational processes in the power-on self-locking method. After receiving the power-on drive signal, the relay switches to the conducting state, allowing current to flow through it. Once the relay is conducting, the locking switch remains closed, ensuring that the battery continuously supplies power to the vehicle controller through the relay and the locking switch, thus achieving power-on self-locking. This process ensures the stability and continuity of the circuit after power-on, preventing unexpected power outages.

[0049] like Figure 6 As shown, Figure 6 This is a flowchart illustrating a power-off method in one embodiment, applied to the aforementioned power-on self-locking circuit. The steps provided by the power-off method in this embodiment include: S601, when the signal detection unit detects the power-down control signal, it responds to the power-down control signal and outputs the power-down detection signal.

[0050] In this step, after receiving the power-down control signal, the signal detection unit converts it into a power-down detection signal and outputs it to the control unit to trigger the subsequent power-down operation.

[0051] Optionally, the signal detection unit includes a faucet lock signal detection module and a button signal detection module, which are responsible for detecting different types of power-on control signals, respectively. This step can be specifically executed as follows: B1: When the faucet lock signal detection module detects the faucet lock power-down control signal, it responds to the faucet lock power-down control signal and outputs the first power-down detection signal.

[0052] This indicates that the faucet lock is detected to be locked.

[0053] B2: When the button signal detection module detects the power-down button control signal, it responds to the power-down button control signal and outputs a second power-down detection signal.

[0054] This indicates that the power-on button has not been pressed, triggering the power-off button control signal.

[0055] S602, when the control unit inputs a power-down detection signal, responds to the power-down detection signal and outputs a power-down drive signal.

[0056] In this step, the control unit processes the power-down detection signal according to predetermined logic and conditions, generates a power-down drive signal, and outputs it to the self-locking unit or other related circuit parts to start the power-down process.

[0057] Optionally, when the control unit inputs the first power-down detection signal and the second power-down detection signal, it responds to the first power-down detection signal and the second power-down detection signal and outputs a power-down drive signal.

[0058] This means that the control unit outputs a power-down drive signal when all conditions are met, i.e., the faucet lock is locked and the power-on button is not pressed, to ensure that the system starts the power-down process under all predetermined conditions.

[0059] S603, when the relay input of the self-locking unit is powered down, it responds to the power-down drive signal and switches to the disconnected state.

[0060] S604: After the relay is in the off state, the locking switch is opened, so that the power-on self-locking circuit is de-energized.

[0061] Steps S601 to S604 above are the key parts of the power-down method, ensuring the safety and stability of the circuit after power-down. After the signal detection unit detects the power-down control signal, it outputs a power-down detection signal. The control unit generates a power-down drive signal based on the detection signal. Upon receiving the power-down drive signal, the relay switches to the off state, the locking switch is opened, and the battery can no longer supply power to the vehicle controller, thus powering down the power-on self-locking circuit.

[0062] The present invention also provides a vehicle including a power-on self-locking circuit. Through the coordinated operation of a signal detection unit, a control unit and a self-locking unit, the vehicle achieves efficient and reliable power control, which greatly improves driving safety.

[0063] It should be noted that the above-mentioned power-on self-locking circuit, power-on / off method, and vehicle belong to the same general inventive concept, and the contents of the power-on self-locking circuit, power-on / off method, and vehicle embodiments are applicable to each other.

[0064] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A power-on self-locking circuit, characterized in that, The power-on self-locking circuit includes: The signal detection unit is used to respond to the detected power-on control signal and output the power-on detection signal; A control unit, connected to the signal detection unit, is used to respond to the power-on detection signal and output a power-on drive signal; The self-locking unit includes a first diode, a second diode, a relay, a locking switch, an on-board controller, and a battery; The positive terminal of the first diode is connected to the control unit, and the negative terminal of the first diode is connected to the first terminal of the relay; The positive terminal of the second diode is connected to the first terminal of the vehicle controller, the negative terminal of the second diode is connected to the first terminal of the relay, and the second terminal of the vehicle controller is grounded. The second terminal of the relay is connected to the first terminal of the vehicle controller through the locking switch, and the third terminal of the relay is grounded through the battery. The relay is used to respond to the power-on drive signal and switch to the on state. The locking switch remains closed after the relay is in the on state. The signal detection unit includes a faucet lock signal detection module, which includes a third MOS transistor, a third resistor, a fourth resistor, and a third diode. The negative terminal of the third diode is used to input the power control signal of the faucet lock, the positive terminal of the third diode is connected to the source of the third MOS transistor, and the third resistor is connected in parallel between the gate and the source of the third MOS transistor. The source of the third MOS transistor is connected to the power supply, and the drain of the third MOS transistor is grounded through the fourth resistor. The third MOS transistor responds to the power-on control signal of the faucet lock and outputs a first power-on detection signal from its drain. The signal detection unit includes a button signal detection module, which includes a fourth MOSFET, a fifth resistor, a sixth resistor, and a fourth diode. The negative terminal of the fourth diode is used to input the power-on button control signal, the positive terminal of the fourth diode is connected to the source of the fourth MOS transistor, and the fifth resistor is connected in parallel between the gate and the source of the fourth MOS transistor. The source of the fourth MOS transistor is connected to the power supply, and the drain of the fourth MOS transistor is grounded through the sixth resistor. The fourth MOS transistor responds to the power-on button control signal and outputs a second power-on detection signal from its drain.

2. The power-on self-locking circuit according to claim 1, characterized in that, The self-locking unit includes: a first MOSFET, a second MOSFET, a first resistor, a second resistor, a first diode, a second diode, a relay, a locking switch, a vehicle controller, and a battery; The gate of the first MOS transistor is connected to the control unit, the source of the first MOS transistor is grounded, and the drain of the first MOS transistor is connected to the gate of the second MOS transistor. The source of the second MOS transistor is connected to the battery, the drain of the second MOS transistor is connected to the anode of the first diode, and the second resistor is connected in parallel between the gate and the source of the second MOS transistor. The cathode of the first diode is connected to the first terminal of the relay, and the relay is energized after the power-on drive signal is input; The positive terminal of the second diode is connected to the first terminal of the vehicle controller, the negative terminal of the second diode is connected to the first terminal of the relay, and the second terminal of the vehicle controller is grounded. The second terminal of the relay is connected to the first terminal of the vehicle controller via the locking switch, and the third terminal of the relay is grounded via the battery. The locking switch remains closed after the relay is energized.

3. A power-on self-locking method, characterized in that, Applied to the power-on self-locking circuit as described in claim 1, the method includes: When the signal detection unit detects the power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal; When the control unit inputs the power-on detection signal, it responds to the power-on detection signal and outputs a power-on drive signal; When the relay of the self-locking unit receives the power-on drive signal, it responds to the power-on drive signal and switches to the on state; After the relay is in the conducting state, the locking switch remains closed, so that the battery powers on and locks the vehicle controller via the relay and the locking switch.

4. The method according to claim 3, characterized in that, The signal detection unit includes a faucet lock signal detection module and a button signal detection module. When the signal detection unit detects a power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal, including: When the faucet lock signal detection module detects the faucet lock power-on control signal, it responds to the faucet lock power-on control signal and outputs a first power-on detection signal; When the button signal detection module detects the power-on button control signal, it responds to the power-on button control signal and outputs a second power-on detection signal. When the control unit inputs the power-on detection signal, responding to the power-on detection signal and outputting a power-on drive signal includes: When the control unit receives the first power-on detection signal and the second power-on detection signal, it responds to the first power-on detection signal and the second power-on detection signal and outputs a power-on drive signal.

5. A power-off method, characterized in that, Applied to the power-on self-locking circuit as described in claim 1, the method includes: When the signal detection unit detects the power-down control signal, it responds to the power-down control signal and outputs a power-down detection signal; When the control unit inputs the power-down detection signal, it responds to the power-down detection signal and outputs a power-down drive signal; When the relay of the self-locking unit receives the power-down drive signal, it responds to the power-down drive signal and switches to the disconnected state; After the relay is in the off state, the locking switch is opened, so that the power-on self-locking circuit is de-energized.

6. The method according to claim 5, characterized in that, The signal detection unit includes a faucet lock signal detection module and a button signal detection module. When the signal detection unit detects a power-down control signal, it responds to the power-down control signal and outputs a power-down detection signal, including: When the faucet lock signal detection module detects the faucet lock power-down control signal, it responds to the faucet lock power-down control signal and outputs a first power-down detection signal; When the button signal detection module detects the power-down button control signal, it responds to the power-down button control signal and outputs a second power-down detection signal. When the control unit inputs the power-down detection signal, responding to the power-down detection signal and outputting a power-down drive signal includes: When the control unit receives the first power-down detection signal and the second power-down detection signal, it responds to the first power-down detection signal and the second power-down detection signal and outputs a power-down drive signal.

7. A vehicle, characterized in that, The vehicle includes a power-on self-locking circuit as described in any one of claims 1-2.

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