Control circuit, control system and vehicle

Abstract

The utility model relates to a control circuit, a control system and a vehicle, and the control circuit comprises a steering wheel motor which is used for responding to a rotation operation of a vehicle steering wheel, generating a first voltage corresponding to the rotation operation, and inputting the first voltage to a first conversion unit; the first conversion unit is used for converting the first voltage into a second voltage and inputting the second voltage into the first energy storage unit; the first energy storage unit is used for storing electric energy and outputting the electric energy to the control unit; and the control unit is used for outputting voltage to the controller when the input voltage reaches the first threshold voltage, so that the vehicle is started emergently. Power is generated by rotating the steering wheel without additionally arranging a power generation structure, so that the power generation cost can be saved. By arranging the first energy storage unit to store scattered electric energy generated by the steering wheel motor, waste of the electric energy can be avoided, and then the use efficiency of the electric energy can be improved. And meanwhile, stable voltage can be ensured to be input into the controller, so that the vehicle can be started emergently.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular, to a control circuit, a control system and a vehicle. Background Art

[0002] A boost circuit is a circuit mainly used to increase the input voltage to a higher output voltage. In the related art, the voltage is usually boosted by generating electricity from a generator, or by providing an external power supply on the boost circuit to generate a voltage that can put the electrical equipment into working state. Utility Model Content

[0003] The purpose of the present disclosure is to provide a control circuit, a control system and a vehicle to solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned object, in a first aspect, the present disclosure provides a control circuit, comprising a steering wheel motor, a first conversion unit, a first energy storage unit and a control unit, wherein the output end of the steering wheel motor is connected to the input end of the first conversion unit, the output end of the first conversion unit is connected to the input end of the first energy storage unit, the output end of the first energy storage unit is connected to the input end of the control unit, and the output end of the control unit is used to connect to a controller of a vehicle;

[0005] The steering wheel motor is used to generate a first voltage corresponding to the rotation operation in response to the rotation operation of the vehicle steering wheel, and input the first voltage to the first conversion unit;

[0006] The first conversion unit is used to convert the first voltage into a second voltage and input the second voltage into the first energy storage unit, wherein the second voltage is greater than the first voltage;

[0007] The first energy storage unit is used to store electrical energy and output electrical energy to the control unit;

[0008] The control unit is used to output a voltage to the controller when the input voltage reaches a first threshold voltage, so as to enable emergency start of the vehicle.

[0009] Optionally, the control unit includes a voltage release unit and a second conversion unit; the input end of the voltage release unit is respectively connected to the output end of the first energy storage unit and the output end of the second conversion unit, the input end of the second conversion unit is connected to the output end of the first energy storage unit, and the output end of the voltage release unit is connected to the controller;

[0010] The voltage release unit is used to output a voltage to the controller when the input voltage reaches a first threshold voltage, so as to enable emergency start of the vehicle;

[0011] The second conversion unit is used for performing a voltage boost process when the input voltage reaches a second threshold voltage, and inputting the boosted voltage to the voltage release unit when the boosted voltage reaches the first threshold voltage, wherein the second threshold voltage is less than the first threshold voltage;

[0012] The voltage release unit is further used to input the boosted voltage to the controller to enable emergency start of the vehicle.

[0013] Optionally, the voltage release unit includes a first switch module, a first diode D1 and a first transistor Q1;

[0014] The input end of the first switch module is connected to the output end of the first energy storage unit and the collector of the first transistor Q1 respectively, and the base of the first transistor Q1 is connected to the output end of the first energy storage unit through the first diode D1;

[0015] The first energy storage unit, the first switch module, the first transistor Q1 and the first diode D1 can form a first loop, so that when the input voltage of the first diode D1 reaches the first threshold voltage, a voltage is output to the controller through the first switch module.

[0016] Optionally, the first switch module includes a MOS tube Q1, a source of the MOS tube Q1 is connected to the output end of the first energy storage unit, a gate of the MOS tube Q1 is connected to the collector of the first transistor Q1 through a resistor R2, a source of the MOS tube Q1 is connected to the resistor R2 through the resistor R1, an emitter of the first transistor Q1 is grounded, a base of the first transistor Q1 is connected to the anode of the first diode D1, and a cathode of the first diode D1 is connected to the output end of the first energy storage unit through a resistor R4.

[0017] Optionally, the voltage release unit further includes a second switch module, a second diode D2 and a second transistor Q2;

[0018] The input end of the second switch module is respectively connected to the output end of the first switch module and the collector of the second transistor Q2, and the base of the second transistor Q2 is connected to the output end of the first energy storage unit through the second diode D2;

[0019] The first energy storage unit, the first switch module, the second switch module, the second transistor Q2 and the second diode D2 can form a second loop, so that when the input voltage of the second diode D2 reaches the first threshold voltage, a voltage is output to the controller through the second switch module.

[0020] Optionally, the first switch module includes a MOS transistor Q1, and the second switch module includes a MOS transistor Q2, the source of the MOS transistor Q1 is connected to the output end of the first energy storage unit, the drain of the MOS transistor Q1 is connected to the source of the MOS transistor Q2, the gate of the MOS transistor Q2 is connected to the collector of the second triode Q2 through a resistor R3, the emitter of the second triode Q2 is grounded, the base of the second triode Q2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the output end of the first energy storage unit through a resistor R5.

[0021] Optionally, the output end of the second conversion unit is connected to the input end of the second switch module;

[0022] The first energy storage unit, the second conversion unit, the second switch module, the second transistor Q2 and the second diode D2 can form a third loop to perform a voltage boost when the input voltage of the second conversion unit reaches a second threshold voltage, and when the boosted voltage reaches the first threshold voltage, the boosted voltage is output to the controller through the second switch module.

[0023] Optionally, the second switch module includes a MOS tube Q2, the output end of the second conversion unit is connected to the source of the MOS tube Q2, the gate of the MOS tube Q2 is connected to the collector of the second triode Q2 through a resistor R3, the emitter of the second triode Q2 is grounded, the base of the second triode Q2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the output end of the first energy storage unit through a resistor R5.

[0024] Optionally, the control circuit further comprises a second energy storage unit, an input end of the second energy storage unit is connected to the steering wheel motor, and an output end of the second energy storage unit is connected to an input end of the first conversion unit;

[0025] The second energy storage unit is used to store electric energy and output the electric energy to the first conversion unit.

[0026] Optionally, the first energy storage unit is a multi-stage capacitor parallel circuit.

[0027] In a second aspect, a control system includes a controller and any one of the control circuits provided in the first aspect of the present disclosure.

[0028] In a third aspect, the present disclosure further provides a vehicle, comprising any control circuit provided in the first aspect of the present disclosure or the control system provided in the second aspect of the present disclosure.

[0029] Through the above technical solution, in response to the turning operation of the vehicle steering wheel, the steering wheel motor generates a first voltage corresponding to the turning operation, and the first voltage is input into the first conversion unit. By turning the steering wheel to generate electricity, compared with the related art of generating electricity by a generator, there is no need to add an additional power generation structure, thereby saving the cost of power generation and making power generation easier. Afterwards, the first voltage is converted into a second voltage by the first conversion unit, and the second voltage is input into the first energy storage unit. The first energy storage unit stores electric energy and outputs electric energy to the control unit. By setting the first energy storage unit to store electric energy, the scattered electric energy generated by the steering wheel motor is stored, and stable electric energy is output to the control unit, which can avoid the waste of electric energy and improve the efficiency of electric energy use. Afterwards, the control unit can control the input voltage to output a stable voltage to the controller when it reaches the first threshold voltage, so that the vehicle can be started in an emergency when the on-board battery is insufficient.

[0030] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of a capacitor boost energy storage circuit in the second related technology.

[0033] Figure 2 is a schematic diagram showing a control circuit according to an exemplary embodiment of the present disclosure.

[0034] Figure 3 is a schematic diagram showing a first energy storage unit according to an exemplary embodiment of the present disclosure.

[0035] Figure 4 is a schematic diagram showing a first loop according to an exemplary embodiment of the present disclosure.

[0036] Figure 5 is a circuit diagram showing a first loop and a second loop according to an exemplary embodiment of the present disclosure.

[0037] Figure 6 is a schematic diagram showing a second loop according to an exemplary embodiment of the present disclosure.

[0038] Figure 7 is a schematic diagram showing a first loop and a second loop according to an exemplary embodiment of the present disclosure.

[0039] Figure 8is a schematic diagram showing a third loop according to an exemplary embodiment of the present disclosure.

[0040] Fig. 9 is a schematic diagram showing a control loop according to an exemplary embodiment of the present disclosure.

[0041] Fig.10 is a schematic diagram showing a second energy storage unit according to an exemplary embodiment of the present disclosure.

[0042] Fig.11 is a block diagram showing a control system according to an exemplary embodiment.

[0043] Fig.12 is a block diagram showing a vehicle according to an exemplary embodiment.

[0044] Description of Reference Numerals

[0045] 1. Input module; 2. First control module; 3. Boost charging module; 4. Monitoring module; 5. Switching module; 6. Second control module; 7. Output module; 101. Steering wheel motor; 102. First conversion unit; 103. First energy storage unit; 104. Second conversion unit; 105. Control unit; 106. Controller; 107. Second energy storage unit; 1100. Control system; 1101. Control circuit; 1200. Vehicle. DETAILED DESCRIPTION

[0046] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0047] In the first related technology, a generator structure is provided, and electricity is generated by converting mechanical energy into electrical energy in the generator structure, and the generated electrical energy is input into related electrical equipment.

[0048] In the second related art, Figure 1As shown, by designing a power supply based on capacitor boost energy storage, an external power supply circuit and an energy storage capacitor power supply circuit are arranged in the power supply circuit. Based on the external power supply circuit, the input voltage of the external power supply is filtered by the input module 1 to obtain a first voltage, the first voltage is converted into a required second voltage by the first control module 2, and the second voltage is filtered by the output module 7 and output. Based on the energy storage capacitor power supply circuit, the first voltage is boosted by the boost charging module 3 to obtain a third voltage to charge the internal energy storage capacitor. When a momentary interruption occurs in the external power supply circuit, the monitoring module 4 triggers the switching module 5 to switch to the energy storage capacitor for power supply, the third voltage is converted into the required second voltage by the switching module 5 and the second control module 6, and the second voltage is filtered by the output module 7 and output. In this way, when the capacitance of the device is limited, the voltage of the capacitor can be increased to improve the anti-momentary interruption capability of the power supply.

[0049] The inventor found that when the first related technology is used to generate electricity, the power generation structure used is costly and the space occupied by the generator structure is large. When the voltage is increased and then output through the circuit in the second related technology, the input power supply is unstable, and when the power of the power supply drops to a certain amplitude during the discharge process, it cannot continue to output, which may lead to waste of residual energy in the capacitor and reduce energy conversion efficiency. In addition, the circuit cannot be used as an emergency starting circuit when a battery failure occurs in the vehicle.

[0050] In view of this, the present disclosure provides a control circuit, a control system and a vehicle to solve the technical problems existing in the above-mentioned related technologies.

[0051] like Figure 2 As shown, Figure 2 is a schematic diagram showing a control circuit according to an exemplary embodiment of the present disclosure, referring to Figure 2 , comprising: a steering wheel motor 101, a first conversion unit 102, a first energy storage unit 103 and a control unit 105, wherein the output end of the steering wheel motor 101 is connected to the input end of the first conversion unit 102, the output end of the first conversion unit 102 is connected to the input end of the first energy storage unit 103, the output end of the first energy storage unit 103 is connected to the input end of the control unit 105, and the output end of the control unit 105 is used to connect to a controller 106 of the vehicle;

[0052] The steering wheel motor 101 is used to generate a first voltage corresponding to the rotation operation in response to the rotation operation of the vehicle steering wheel, and input the first voltage to the first conversion unit 102;

[0053] The first conversion unit 102 is used to convert the first voltage into a second voltage, and input the second voltage to the first energy storage unit 103, wherein the second voltage is greater than the first voltage;

[0054] The first energy storage unit 103 is used to store electrical energy and output electrical energy to the control unit 105;

[0055] The control unit 105 is used to output a voltage to the controller 106 when the input voltage reaches a first threshold voltage, so as to enable emergency start of the vehicle.

[0056] Through the above technical solution, in response to the turning operation of the vehicle steering wheel, the steering wheel motor 101 generates a first voltage corresponding to the turning operation, and inputs the first voltage into the first conversion unit 102. By turning the steering wheel to generate electricity, compared with the related art of generating electricity by a generator, there is no need to add an additional power generation structure, thereby saving the cost of power generation and making power generation easier. Then, the first voltage is converted into a second voltage by the first conversion unit 102, and the second voltage is input into the first energy storage unit 103. The first energy storage unit 103 stores electric energy and outputs electric energy to the control unit 105. By setting the first energy storage unit 103 to store electric energy, the scattered electric energy generated by the steering wheel motor 101 is stored, and stable electric energy is output to the control unit 105, which can avoid the waste of electric energy and improve the efficiency of electric energy use. Then, the control unit 105 can control the input voltage to output a stable voltage to the controller 106 when it reaches the first threshold voltage, so that the vehicle can be started in an emergency when the on-board battery is insufficient.

[0057] For example, the steering wheel motor 101 may be a motor directly connected to the vehicle steering wheel for driving the steering wheel to rotate. When the vehicle battery fails, the steering wheel motor 101 may be separated from the drive shaft, and the user may turn the steering wheel at will. During the process of turning the steering wheel, the steering wheel motor 101 connected to the steering wheel may generate an instantaneous induced voltage, which may be input into the first conversion unit 102 as the first voltage.

[0058] By setting the steering wheel to turn, the steering wheel motor 101 generates voltage, and there is no need to add an additional power generation structure, thereby reducing costs. Generating electricity directly by turning the steering wheel is more convenient to operate and use, and optimizes the mechanical structure and space design compared to adding an additional power generation structure. In this embodiment, the instantaneous induced voltage generated by the steering wheel motor 101 is used as a source of electric energy, and the electric energy is collected and used for emergency starting, which can reduce the cost of adding a power generation structure. At the same time, compared to generating electricity through a generator, the operation of turning the steering wheel can be simpler and more direct. Therefore, when emergency starting is required, the learning process for using the generator can be reduced.

[0059] For example, the first conversion unit 102 may be a boost conversion chip in the related art. When the first voltage is input to the first conversion unit 102, the first conversion unit 102 may perform a boost process on the first voltage, convert the first voltage into a second voltage, and input the second voltage into the first energy storage unit 103. The second voltage is greater than the first voltage, and the second voltage may be a set threshold voltage or any voltage value greater than the first voltage, which is not specifically limited in the embodiments of the present disclosure.

[0060] For example, the boost converter chip can be a 450kHz, fixed frequency, highly integrated chip with a programmable input undervoltage lockout (UVLO) for detecting whether the input voltage is below a preset threshold and an overtemperature protection (OTP) for detecting the chip temperature and taking corresponding protection measures when the temperature exceeds the preset threshold. When the first voltage is input to the boost converter chip, it starts charging VDD (Power Supply Voltage) from VIN (Input Voltage). When the EN (Enable) pin in the boost converter chip is high and VDD rises above the UVLO threshold, the boost converter chip starts switching using closed-loop control. When the boost converter chip is enabled, it starts in soft start (SS) mode, controlling the SS signal by charging the SS pin from 0V and comparing this value with the internal reference voltage. The lower of the two values ​​is fed into the error amplifier to control the output voltage. After the SS signal rises above the reference voltage, the soft start is completed and the internal reference voltage source is responsible for feedback loop regulation. Among them, the soft start method is used to reduce the current impact at the startup moment and the instability of the output voltage.

[0061] In this embodiment, when the UVLO threshold is 16V, the first voltage can be converted into a second voltage through the boost converter chip, and the second voltage can be 16V. The embodiment of the present disclosure does not make any specific actions for this. The VIN pin of the boost converter chip is connected to the positive pole of the steering wheel motor 101, and the VOUT (Voltage Output) pin in the boost converter chip is connected to the second voltage, and the second voltage is input into the first energy storage unit 103, which can speed up the charging speed of the first energy storage unit 103, and is higher and more stable than the instantaneous voltage generated by the steering wheel motor 101.

[0062] For example, Figure 3As shown, the first energy storage unit 103 is mainly used to store electric energy and output electric energy to the control unit 105. When the first voltage is generated by the steering wheel motor 101, the first voltage is a scattered, different and unstable voltage, and then when the first voltage is converted into a second voltage, the second voltage is also a scattered, different and unstable voltage. At this time, the second voltage cannot be directly output to the controller 106 as a condition for emergency start of the vehicle. The electric energy corresponding to the second voltage can be stored by the first energy storage unit 103, and stable electric energy can be output to the control unit 105. Then, the voltage input to the controller 106 can be in a stable state, so that the vehicle can meet the conditions for emergency start. Among them, the controller 106 can be a device for controlling the emergency start of the vehicle.

[0063] In a possible manner, the first energy storage unit 103 is a multi-stage capacitor parallel circuit.

[0064] It should be understood that the first energy storage unit 103 may be a capacitor energy storage unit, and the embodiments of the present disclosure do not specifically limit this. For example, the first energy storage unit 103 may be a multi-stage capacitor parallel circuit in the related art. When a capacitor is used as an energy storage unit, the electric energy corresponding to the second voltage can be stored, and the control unit 105 outputs stable electric energy, thereby increasing the charging and discharging speed of the first energy storage unit 103, and increasing the lifespan and number of cycles used in the circuit.

[0065] The first energy storage unit 103 can be a circuit that connects a certain amount of capacitors in parallel to increase the power storage capacity. When the boost converter chip is started, it starts to store energy in the capacitor. As the energy increases, when the voltage of the first energy storage unit 103 reaches 16V, it can start releasing electrical energy to the outside by starting the control unit 105.

[0066] By setting the first energy storage unit 103 as a capacitor energy storage circuit, the battery-type energy storage device can be replaced by a capacitor with low cost and small volume. There is no need to add an additional battery-type energy storage and discharge device, thereby reducing costs and additional space occupation. At the same time, the reliability, service life and safety of the capacitor energy storage circuit are improved.

[0067] For example, the input voltage may be a voltage input into the control unit 105. The input voltage may correspond to the output electric energy of the first energy storage unit 103. The first threshold voltage may be input into the controller 106 and may be used as a threshold voltage for emergency start of the vehicle. In the control unit 105, when the input voltage reaches the first threshold voltage, a voltage is output to the controller 106 so that the vehicle can be emergency started.

[0068] In a possible manner, the control unit 105 includes a voltage release unit and a second conversion unit 104; the input end of the voltage release unit is respectively connected to the output end of the first energy storage unit 103 and the output end of the second conversion unit 104, the input end of the second conversion unit 104 is connected to the output end of the first energy storage unit 103, and the output end of the voltage release unit is connected to the controller 106;

[0069] The voltage release unit is used to output a voltage to the controller 106 when the input voltage reaches a first threshold voltage, so as to enable emergency start of the vehicle;

[0070] The second conversion unit 104 is used for performing a voltage boost process when the input voltage reaches a second threshold voltage, and inputting the boosted voltage to the voltage release unit when the boosted voltage reaches the first threshold voltage, wherein the second threshold voltage is less than the first threshold voltage;

[0071] The voltage release unit is further used to input the boosted voltage to the controller 106 to enable emergency start of the vehicle.

[0072] It should be understood that the control unit 105 may include a voltage release unit and a second conversion unit 104. The input end of the voltage release unit and the input end of the second conversion unit 104 are both connected to the output end of the first energy storage unit 103. When the input voltage reaches the first threshold voltage, it can represent that the input voltage can be used as a voltage for emergency start of the vehicle, and then the voltage can be output to the controller 106 through the voltage release unit, so that the vehicle can be started in an emergency. When the input voltage reaches the second threshold voltage, it can represent that the input voltage cannot be used as a voltage for emergency start of the vehicle. At this time, the input voltage can be boosted in the second conversion unit 104, and when the boosted voltage reaches the first threshold voltage, the boosted voltage is input into the controller 106 through the voltage release unit, so that the vehicle can be started in an emergency. Among them, the second threshold voltage can be a threshold voltage that requires the input voltage to be boosted. And the second threshold voltage is less than the first threshold voltage.

[0073] By judging whether the input voltage reaches the first threshold voltage, and when it does not reach the first threshold voltage, the second conversion unit 104 performs a voltage boost process on the input voltage, and when the voltage after the voltage boost process reaches the first threshold voltage, the voltage is output to the controller 106 through the voltage release unit, so that the vehicle performs an emergency start. The voltage input to the controller 106 can always be maintained at a stable voltage, thereby meeting the conditions for the vehicle to perform an emergency start.

[0074] In a possible manner, the voltage release unit includes a first switch module, a first diode D1 and a first transistor Q1;

[0075] The input end of the first switch module is connected to the output end of the first energy storage unit 103 and the collector of the first transistor Q1 respectively, and the base of the first transistor Q1 is connected to the output end of the first energy storage unit 103 through the first diode D1;

[0076] The first energy storage unit 103 , the first switch module, the first transistor Q1 , and the first diode D1 can form a first loop, so that when the input voltage of the first diode D1 reaches the first threshold voltage, a voltage is output to the controller 106 through the first switch module.

[0077] It should be understood that the first switch module may be a MOS tube, which is not specifically limited in the embodiments of the present disclosure. The first diode D1 may be a Schottky diode, which is not specifically limited in the embodiments of the present disclosure. When the first diode D1 is a Schottky diode, the Schottky diode can be used to quickly restore the forward bias state due to its own performance to reduce the reverse recovery time.

[0078] like Figure 4 As shown, in the first loop, the first diode D1 can be reversely connected. When the input voltage of the first diode D1 reaches the first threshold voltage, the voltage will break down the first diode D1 and turn on the first transistor Q1. Then, the first switch module can be turned on through the first transistor Q1, and the voltage can be output to the controller 106 through the first switch module. Among them, the first transistor Q1 can be an npn transistor, which is not specifically limited in the embodiment of the present disclosure.

[0079] In a possible manner, the first switch module includes a MOS tube Q1, a source of the MOS tube Q1 is connected to the output end of the first energy storage unit 103, a gate of the MOS tube Q1 is connected to the collector of the first transistor Q1 through a resistor R2, a source of the MOS tube Q1 is connected to the resistor R2 through the resistor R1, an emitter of the first transistor Q1 is grounded, a base of the first transistor Q1 is connected to the anode of the first diode D1, and a cathode of the first diode D1 is connected to the output end of the first energy storage unit 103 through a resistor R4.

[0080] It should be understood that when the first switch module includes a MOS tube Q1, the first loop is constructed by using the first triode Q1 and the MOS tube Q1 as switches and cooperating with the first diode D1 to prevent current backflow. Among them, the first triode Q1 is connected in series in the first loop where the MOS tube Q1 is located. When the first triode Q1 is not turned on, the first loop where the MOS tube Q1 is located is not turned on, and then the MOS tube Q1 cannot be turned on. When the first triode Q1 reaches a certain condition and turns on, the first loop where the MOS tube Q1 is located is turned on, and the MOS tube Q1 is turned on after reaching the start-up standard, and the voltage is input to the controller 106. Among them, the resistor R4 can divide the voltage of the first loop. When a certain voltage is reached at some positions in the first loop during the charging process of the first energy storage unit 103, when the voltage value after the voltage division by the resistor R4 reaches the standard corresponding to the opening of the first triode Q1, the first triode Q1 is turned on, and then the first loop where the MOS tube Q1 is located is turned on, and the flow of current and energy in the first loop can be controlled.

[0081] like Figure 5 As shown, the circuit components specifically connected in the first loop are as follows Figure 5 It can be known that the current direction of the first loop can be output from the first energy storage unit 103, flow into the gate of the MOS tube Q1 through the resistor R4, the first diode D1, the collector of the first triode Q1 and the resistor R2, and that is, the current flows into the source of the MOS tube Q1 through the first energy storage unit 103, thereby turning on the MOS tube Q1, and outputting a voltage to the controller 106 through the drain of the MOS tube Q1. Among them, the base of the first triode Q1 is grounded through the resistor R6, and the source and gate of the MOS tube Q1 are connected through the resistor R1.

[0082] In a possible manner, the voltage release unit further includes a second switch module, a second diode D2 and a second transistor Q2;

[0083] The input end of the second switch module is respectively connected to the output end of the first switch module and the collector of the second transistor Q2, and the base of the second transistor Q2 is connected to the output end of the first energy storage unit 103 through the second diode D2;

[0084] The first energy storage unit 103, the first switch module, the second switch module, the second transistor Q2 and the second diode D2 can form a second loop, so that when the input voltage of the second diode D2 reaches the first threshold voltage, a voltage is output to the controller 106 through the second switch module.

[0085] It should be understood that the second switch module may be a MOS tube, which is not specifically limited in the embodiments of the present disclosure. The second diode D2 may be a Schottky diode, which is not specifically limited in the embodiments of the present disclosure. When the second diode D2 is a Schottky diode, the Schottky diode can be used to quickly restore the forward bias state due to its own performance to reduce the reverse recovery time.

[0086] like Figure 6 As shown, in the second loop, the second diode D2 can be reversely connected. When the input voltage of the second diode D2 reaches the first threshold voltage, the voltage will break down the second diode D2 and turn on the second transistor Q2. Then, the second switch module can be turned on through the second transistor Q2, and the voltage can be output to the controller 106 through the second switch module. Among them, the second transistor Q2 can be an npn transistor, which is not specifically limited in the embodiment of the present disclosure.

[0087] In a possible manner, the first switch module includes a MOS transistor Q1, and the second switch module includes a MOS transistor Q2, the source of the MOS transistor Q1 is connected to the output end of the first energy storage unit 103, the drain of the MOS transistor Q1 is connected to the source of the MOS transistor Q2, the gate of the MOS transistor Q2 is connected to the collector of the second triode Q2 through a resistor R3, the emitter of the second triode Q2 is grounded, the base of the second triode Q2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the output end of the first energy storage unit 103 through a resistor R5.

[0088] It should be understood that when the second switch module includes a MOS tube Q2, the second loop is constructed by using the second triode Q2 and the MOS tube Q2 as switches and then cooperating with the second diode D2 to prevent current backflow. Among them, the second triode Q2 is connected in series in the second loop where the MOS tube Q2 is located. When the second triode Q2 is not turned on, the second loop where the MOS tube Q2 is located is not turned on, and then the MOS tube Q2 cannot be turned on. When the second triode Q2 reaches a certain condition and turns on, the second loop where the MOS tube Q2 is located is turned on, and the MOS tube Q2 is turned on after reaching the start-up standard, and the voltage is input to the controller 106. Among them, the resistor R5 can divide the voltage of the second loop. When a certain voltage is reached at some positions in the second loop during the charging process of the first energy storage unit 103, when the voltage value after the voltage division by the resistor R5 reaches the standard corresponding to the opening of the second triode Q2, the second triode Q2 is turned on, and then the second loop where the MOS tube Q2 is located is turned on, and the flow of current and energy in the second loop can be controlled.

[0089] like Figure 5 As shown, the circuit components specifically connected in the second loop are as follows Figure 5It can be known that the current direction of the second loop can be output from the first energy storage unit 103, flow into the gate of the MOS tube Q2 through the resistor R5, the second diode D2, the collector of the second triode Q2 and the resistor R3, and the first energy storage unit 103 flows the current into the source of the MOS tube Q2 through the first switch module, so that the MOS tube Q2 can be turned on, and then the voltage can be output to the controller 106 through the drain of the MOS tube Q2. Among them, the base of the second triode is grounded through the resistor R8, and the source and drain of the MOS tube Q2 are connected through the resistor R7.

[0090] For example, in an actual circuit, when the voltage release unit has both the first loop and the second loop, Figure 7 As shown, when the voltage in the first energy storage unit 103 reaches 16V, the first triode Q1 and the second triode Q2 are turned on at the same time, and then the first circuit where the MOS tube Q1 is located is turned on with the second circuit where the MOS tube Q2 is located. At this time, the energy in the first energy storage unit 103 can be output to the controller 106. When the voltage in the first energy storage unit 103 drops below 9.5V, the first triode Q1 is disconnected, resulting in the disconnection of the first circuit where the MOS tube Q1 is located. At this time, the controller 106 can be powered by the second conversion unit 104. When the voltage in the first energy storage unit 103 drops below 2.5V, the second triode Q2 is disconnected, resulting in the disconnection of the second circuit where the MOS tube Q2 is located, and the external discharge process ends.

[0091] In a possible manner, the output end of the second conversion unit 104 is connected to the input end of the second switch module;

[0092] The first energy storage unit 103, the second conversion unit 104, the second switch module, the second transistor Q2 and the second diode D2 can form a third loop to perform a voltage boost when the input voltage of the second conversion unit 104 reaches a second threshold voltage, and when the boosted voltage reaches the first threshold voltage, output the boosted voltage to the controller 106 through the second switch module.

[0093] It should be understood that if Figure 8 As shown, when the input voltage reaches the second threshold voltage, it may represent that the first energy storage unit 103 cannot directly output energy to the controller 106 through the voltage release unit. At this time, the input voltage may be boosted by the second conversion unit 104 to convert the input voltage into a voltage that can reach the first threshold voltage, and then the boosted voltage may be output to the controller 106 through the second switch module. The second conversion unit 104 may be an automatic boost chip, which is not specifically limited in the embodiments of the present disclosure.

[0094] For example, Figure 8 As shown, when the second conversion unit 104 can be an automatic boost chip in the related art, the automatic boost chip can be a control module circuit for automatic boosting in a wide input range. When the input or output voltage is higher than the preset standby threshold, the automatic boost chip operates in a low-power standby mode and automatically wakes up when the output voltage drops below the preset wake-up threshold. The automatic boost chip includes programmable output voltage options -6.0V, 6.5V, 9.5V or 11.5V. The output voltage can be preset to 9.5V to ensure that the input voltage of the controller 106 is stable. In the automatic boost chip, mainly when the input voltage of the second conversion unit 104 drops below 9.5V, the first triode Q1 is disconnected, and then the first circuit where the MOS tube Q1 is located is disconnected. At this time, the first conversion unit 102 is no longer outputting externally, but only inputting electrical energy into the first energy storage unit 103, and at the same time, the electrical energy in the first energy storage unit 103 is completely supplied to the third circuit where the second conversion unit 104 is located.

[0095] The electric energy in the first energy storage unit 103 is raised and stabilized to 9.5V through the automatic boost chip and the peripheral circuit, and the energy is output to the outside through the third circuit until the voltage in the first energy storage unit 103 drops to 2.5V, the automatic boost chip is turned off, and the energy release ends. The third circuit is to ensure that the electric energy in the first energy storage unit 103 is fully utilized, and to prevent the situation where the working voltage of the controller 106 cannot be reached when the energy in the first energy storage unit 103 drops below 9.5V, thereby causing the vehicle to be unable to perform emergency start.

[0096] Compared with the capacitor energy storage boost circuit in the related art, the second conversion unit 104 is provided to boost the energy in the first energy storage unit 103 that was originally unusable for use, which can improve the power conversion efficiency and reduce the cost.

[0097] In a possible manner, the second switch module includes a MOS tube Q2, the output end of the second conversion unit 104 is connected to the source of the MOS tube Q2, the gate of the MOS tube Q2 is connected to the collector of the second transistor Q2 through a resistor R3, the emitter of the second transistor Q2 is grounded, the base of the second transistor Q2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the output end of the first energy storage unit 103 through a resistor R5.

[0098] It should be understood that if Fig. 9 As shown, according to Fig. 9It can be seen that in the third loop, the current flow can be: the first energy storage unit 103 flows the current into the second conversion unit 104, and the second conversion unit 104 flows the current into the controller 106 through the gate of the MOS tube Q2. And the first energy storage unit 103 inputs the current to the source of the MOS tube Q2 through the second diode D2 and the third diode, and then inputs the current into the controller 106 through the drain of the MOS tube Q2, so that the vehicle can be started in an emergency.

[0099] In a possible manner, the control circuit further includes a second energy storage unit 107 , an input end of the second energy storage unit 107 is connected to the steering wheel motor 101 , and an output end of the second energy storage unit 107 is connected to an input end of the first conversion unit 102 ;

[0100] The second energy storage unit 107 is used to store electric energy and output electric energy to the first conversion unit 102 .

[0101] It should be understood that if Fig.10 As shown, the second energy storage unit 107 can be used to store the electric energy generated by the steering wheel motor 101, and can output the electric energy to the first conversion unit 102. The second energy storage unit 107 can be connected in parallel to the first conversion unit 102. The second energy storage unit 107 can include a plurality of capacitors, and each capacitor is connected in parallel to the first conversion unit 102, so that stable electric energy is input to the first conversion unit 102.

[0102] By arranging a second energy storage unit 107 including a plurality of parallel capacitors between the steering wheel motor 101 and the first conversion unit 102, a portion of the induced electromotive force generated when the steering wheel motor 101 rotates can be stored. When the energy stored in the second energy storage unit 107 reaches the threshold for starting the first conversion unit 102, the first conversion unit 102 can step up the input voltage.

[0103] When the vehicle battery is feeding, the steering wheel can be turned repeatedly so that the electric energy generated by the steering wheel motor 101 is stored in the first energy storage unit 103 after passing through the first conversion unit 102. When the electric energy in the first energy storage unit 103 is sufficient for the vehicle to start in an emergency, the voltage release unit can be used to start the controller 106. When the voltage of the energy output to the outside drops below 9.5V, the first energy storage unit 103 is stopped from directly outputting to the outside, and the second conversion unit 104 is turned on at the same time, and the voltage is converted to 16V and then output to the outside through the voltage release unit until the electric energy in the first energy storage unit 103 drops below the preset threshold for the start of the second conversion unit 104.

[0104] Based on the same concept, this embodiment further discloses a control system 1100, including a controller 106 and a control circuit 1101 disclosed in this embodiment.

[0105] Fig.11 1 is a block diagram showing a control system 1100 according to an exemplary embodiment. Fig.11 As shown, the control system 1100 is provided with the controller 106 and the control circuit 1101 provided in this embodiment.

[0106] Based on the same concept, this embodiment also discloses a vehicle 1200 , including the control circuit 1101 disclosed in this embodiment or the control system 1100 disclosed in this embodiment.

[0107] Fig.12 1 is a block diagram showing a vehicle 1200 according to an exemplary embodiment. Fig.12 As shown, the vehicle 1200 is provided with the control system 1100 provided in this embodiment.

[0108] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0109] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0110] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A control circuit, characterized in that: The vehicle comprises a steering wheel motor (101), a first conversion unit (102), a first energy storage unit (103) and a control unit (105); the output end of the steering wheel motor (101) is connected to the input end of the first conversion unit (102); the output end of the first conversion unit (102) is connected to the input end of the first energy storage unit (103); the output end of the first energy storage unit (103) is connected to the input end of the control unit (105); and the output end of the control unit (105) is used to connect to a controller (106) of the vehicle; The steering wheel motor (101) is used to generate a first voltage corresponding to the rotation operation in response to the rotation operation of the vehicle steering wheel, and input the first voltage to the first conversion unit (102); The first conversion unit (102) is used to convert the first voltage into a second voltage, and input the second voltage into the first energy storage unit (103), wherein the second voltage is greater than the first voltage; The first energy storage unit (103) is used to store electric energy and output electric energy to the control unit (105); The control unit (105) is used to output a voltage to the controller (106) when the input voltage reaches a first threshold voltage, so as to enable emergency start of the vehicle.

2. The control circuit according to claim 1, characterized in that: The control unit (105) comprises a voltage release unit and a second conversion unit (104); the input end of the voltage release unit is respectively connected to the output end of the first energy storage unit (103) and the output end of the second conversion unit (104), the input end of the second conversion unit (104) is connected to the output end of the first energy storage unit (103), and the output end of the voltage release unit is connected to the controller (106); The voltage release unit is used to output a voltage to the controller (106) when the input voltage reaches a first threshold voltage, so as to enable emergency start of the vehicle; The second conversion unit (104) is used for performing a voltage boost process when the input voltage reaches a second threshold voltage, and inputting the boosted voltage to the voltage release unit when the boosted voltage reaches the first threshold voltage, wherein the second threshold voltage is less than the first threshold voltage; The voltage release unit is also used to input the boosted voltage to the controller (106) to enable emergency start of the vehicle.

3. The control circuit according to claim 2, characterized in that: The voltage release unit includes a first switch module, a first diode D1 and a first transistor Q1; The input end of the first switch module is respectively connected to the output end of the first energy storage unit (103) and the collector of the first transistor Q1, and the base of the first transistor Q1 is connected to the output end of the first energy storage unit (103) via the first diode D1; The first energy storage unit (103), the first switch module, the first transistor Q1 and the first diode D1 can form a first loop, so that when the input voltage of the first diode D1 reaches the first threshold voltage, a voltage is output to the controller (106) through the first switch module.

4. The control circuit according to claim 3, characterized in that: The first switch module comprises a MOS transistor Q1, a source of the MOS transistor Q1 being connected to the output end of the first energy storage unit (103), a gate of the MOS transistor Q1 being connected to the collector of the first triode Q1 via a resistor R2, a source of the MOS transistor Q1 being connected to the resistor R2 via a resistor R1, an emitter of the first triode Q1 being grounded, a base of the first triode Q1 being connected to the anode of the first diode D1, and a cathode of the first diode D1 being connected to the output end of the first energy storage unit (103) via a resistor R4.

5. The control circuit according to claim 3, characterized in that: The voltage release unit further includes a second switch module, a second diode D2 and a second transistor Q2; The input end of the second switch module is respectively connected to the output end of the first switch module and the collector of the second transistor Q2, and the base of the second transistor Q2 is connected to the output end of the first energy storage unit (103) through the second diode D2; The first energy storage unit (103), the first switch module, the second switch module, the second transistor Q2 and the second diode D2 can form a second loop so that when the input voltage of the second diode D2 reaches the first threshold voltage, a voltage is output to the controller (106) through the second switch module.

6. The control circuit according to claim 5, characterized in that: The first switch module comprises a MOS transistor Q1, and the second switch module comprises a MOS transistor Q2, wherein the source of the MOS transistor Q1 is connected to the output end of the first energy storage unit (103), the drain of the MOS transistor Q1 is connected to the source of the MOS transistor Q2, the gate of the MOS transistor Q2 is connected to the collector of the second triode Q2 via a resistor R3, the emitter of the second triode Q2 is grounded, the base of the second triode Q2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the output end of the first energy storage unit (103) via a resistor R5.

7. The control circuit according to claim 5, characterized in that: The output end of the second conversion unit (104) is connected to the input end of the second switch module; The first energy storage unit (103), the second conversion unit (104), the second switch module, the second transistor Q2 and the second diode D2 can form a third loop to perform a voltage boost when the input voltage of the second conversion unit (104) reaches a second threshold voltage, and when the boosted voltage reaches the first threshold voltage, output the boosted voltage to the controller (106) through the second switch module.

8. The control circuit according to claim 7, characterized in that: The second switch module comprises a MOS transistor Q2, the output end of the second conversion unit (104) is connected to the source of the MOS transistor Q2, the gate of the MOS transistor Q2 is connected to the collector of the second triode Q2 via a resistor R3, the emitter of the second triode Q2 is grounded, the base of the second triode Q2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the output end of the first energy storage unit (103) via a resistor R5.

9. The control circuit according to any one of claims 1 to 8, characterized in that: The control circuit further comprises a second energy storage unit (107), an input end of the second energy storage unit (107) being connected to the steering wheel motor (101), and an output end of the second energy storage unit (107) being connected to an input end of the first conversion unit (102); The second energy storage unit (107) is used to store electric energy and output the electric energy to the first conversion unit (102).

10. The control circuit according to any one of claims 1 to 8, characterized in that: The first energy storage unit (103) is a multi-stage capacitor parallel circuit.

11. A control system, characterized in that: The invention comprises a controller and the control circuit according to any one of claims 1 to 10.

12. A vehicle, characterized in that: It comprises the control circuit according to any one of claims 1 to 10 or the control system according to claim 11.

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