Hard wire wake-up protection circuit and vehicle

Abstract

The utility model discloses a hard wire wake-up protection circuit and a vehicle, and relates to the field of vehicle control. The introduction of the voltage detection circuit can detect the voltage of the hard wire wake-up signal output by the controlled end of the vehicle, and when the voltage reaches the preset voltage, the voltage is output to the first switch tube; therefore, after the vehicle stops running, even if the voltage of the storage battery is unstable, the wake-up signal can be output when the voltage reaches a proper threshold value, so that the problems that the first switching tube works in a variable resistance region and the consumed current is too large due to the unstable voltage are avoided; in addition, the preset voltage ensures that the working current of the first switch tube is smaller than the preset current, so that the first switch tube can be ensured to be in a normal working range and cannot be overheated and damaged due to overlarge current, and the stable work of the motor controller and the whole hard wire wake-up circuit is protected.

Description

Technical Field

[0001] The present application relates to the field of vehicle control, and in particular to a hard-wired wake-up protection circuit and a vehicle. Background Art

[0002] In the field of new energy vehicles, when the vehicle is parked, in order to reduce the power consumption of the motor controller and improve the battery life, a hard-wired wake-up circuit is usually used. Common hard-wired wake-up circuits include Figure 1 As shown, the low-voltage power supply provided by the battery to the input end of the motor controller is called normal power input, the positive input is KL30, the negative input is KL31, the hard-wired wake-up signal is KL15, and the KL15 wake-up voltage is associated with the ON position of the key on the car. When the ON position is valid, the KL15 voltage turns on Q1 in the KL30 and KL31 circuits, the motor controller obtains the voltage, and the motor controller starts working.

[0003] When the vehicle stops running, is left for too long, or the power supply for charging the battery is damaged, the battery will be depleted and the battery voltage will be exhausted. External equipment is required to jump-charge the battery. During the jump-charging process, sparks are often generated at the jump-charging position, resulting in unstable battery voltage, which in turn causes instability in the normal power KL30 and KL15 input to the motor controller.

[0004] When the voltage of KL15 is unstable, it is easy to cause Q1 to work in the variable resistance area. If the voltage drop between the drain and S pole of Q1 is relatively large, the motor controller starts to consume current. At this time, the power loss of Q1 is too large and it is easy to be damaged due to overheating. Utility Model Content

[0005] The purpose of the present application is to provide a hard-wire wake-up protection circuit and a vehicle, which can detect the voltage of the hard-wire wake-up signal output by the controlled end of the vehicle, and output it to the first switch tube when the voltage reaches a preset voltage, so as to ensure that after the vehicle stops driving, even if the battery voltage is unstable, the wake-up signal can be output only when the voltage reaches an appropriate threshold, thereby avoiding the problem of the first switch tube operating in the variable resistance area and consuming excessive current due to voltage instability; in addition, the preset voltage ensures that the operating current of the first switch tube is less than the preset current, so as to ensure that the first switch tube is within the normal working range and will not be damaged by overheating due to excessive current, thereby protecting the stable operation of the motor controller and the entire hard-wire wake-up circuit.

[0006] In order to solve the above technical problems, the present application provides a hard-line wake-up protection circuit, which is applied to a hard-line wake-up circuit of a vehicle. The hard-line wake-up circuit includes a battery, a first switch tube and a motor controller. The positive output terminal of the battery is connected to the positive power terminal of the motor controller through the first switch tube, and the negative output terminal of the battery is connected to the negative power terminal of the motor controller. The hard-line wake-up protection circuit includes:

[0007] a voltage detection circuit, the input end of which is connected to the control end of the vehicle, the output end of which is connected to the control end of the first switch tube, and is used to detect the voltage of the hard-line wake-up signal output by the control end of the vehicle, and when the voltage reaches a threshold voltage, output the hard-line wake-up signal to the first switch tube to turn on the first switch tube;

[0008] The threshold voltage makes the operating current of the first switch tube smaller than a preset current.

[0009] In one embodiment, the hard-line wake-up circuit further includes:

[0010] a second switch tube, wherein a first end of the second switch tube is connected to a control end of the first switch tube, a second end of the second switch tube is connected to a negative output end of the battery, and a control end of the second switch tube is connected to the voltage detection circuit;

[0011] The voltage detection circuit is specifically used to detect the voltage of the hard-line wake-up signal output by the control end of the vehicle, and when the voltage reaches a threshold voltage, outputs the hard-line wake-up signal to the second switch tube to turn on the second switch tube and the first switch tube.

[0012] In one embodiment, the voltage detection circuit includes a reference circuit and a comparison circuit;

[0013] The first input end of the comparison circuit is connected to the control end of the vehicle, the second input end of the comparison circuit is connected to the reference circuit, and the output end of the comparison circuit is connected to the control end of the second switch tube;

[0014] The reference circuit is used to output the threshold voltage, and the comparison circuit is used to output the hard-line wake-up signal to the second switch tube when the voltage of the first input terminal is greater than the voltage of the second input terminal, so as to turn on the second switch tube and the first switch tube.

[0015] In one embodiment, the comparison circuit is a comparator;

[0016] The positive input terminal of the comparator is the first input terminal of the comparison circuit, the negative input terminal of the comparator is the second input terminal of the comparison circuit, and the power supply terminal of the comparator is connected to the control terminal of the vehicle;

[0017] The comparator is used to output the hardware wake-up signal output by the control end of the vehicle to the second switch tube when the voltage at the positive input end is greater than the voltage at the negative input end, so as to turn on the second switch tube and the first switch tube.

[0018] In one embodiment, the reference circuit includes a first resistor, a second resistor, a third resistor and a first voltage regulator tube;

[0019] The first end of the first resistor is connected to the control end of the vehicle, the second end of the first resistor is respectively connected to the cathode of the first voltage regulator tube, the first end of the second resistor and the second input end of the comparison circuit, the second end of the second resistor is respectively connected to the first end of the third resistor and the reference end of the first voltage regulator tube, the second end of the third resistor is respectively connected to the anode of the first voltage regulator tube and the negative output end of the battery, and the parameter of the first voltage regulator tube is set to the threshold voltage.

[0020] In one embodiment, the hard-line wake-up circuit further includes a fourth resistor and a fifth resistor;

[0021] The first end of the fourth resistor is connected to the control end of the vehicle, the second end of the fourth resistor is respectively connected to the first end of the fifth resistor and the first input end of the comparison circuit, and the second end of the fifth resistor is connected to the negative output end of the battery.

[0022] In one embodiment, the hard-line wake-up circuit further includes a second voltage regulator tube, a cathode of the second voltage regulator tube is connected to the positive output terminal of the battery, and an anode of the second voltage regulator tube is connected to the control terminal of the first switch tube.

[0023] In one embodiment, the hard-line wake-up circuit also includes a third voltage regulator tube, the anode of the third voltage regulator tube is connected to the control end of the second switch tube, the cathode of the third voltage regulator tube is connected to the output end of the voltage detection circuit, and the parameter of the third voltage regulator tube is set to a preset voltage, the preset voltage is less than the threshold voltage, and the difference between the preset voltage and the threshold voltage is within a preset range.

[0024] To solve the above technical problems, the present application also provides a vehicle, including a battery, a first switch tube and a motor controller, and also includes the above-mentioned hard-wire wake-up protection circuit, the output positive terminal of the battery is connected to the positive power terminal of the motor controller through the first switch tube, the output negative terminal of the battery is connected to the negative power terminal of the motor controller, and the hard-wire wake-up protection circuit is connected to the control end of the first switch tube.

[0025] The present application provides a hard-wired wake-up protection circuit and a vehicle, and the hard-wired wake-up protection circuit and the vehicle relate to the field of vehicle control. The introduction of the voltage detection circuit in the present application can detect the voltage of the hard-wired wake-up signal output by the controlled end of the vehicle, and output it to the first switch tube when the voltage reaches a preset voltage; this can ensure that after the vehicle stops driving, even if the battery voltage is unstable, the wake-up signal can be output only when the voltage reaches a suitable threshold, thereby avoiding the problem of the first switch tube operating in the variable resistance area and consuming too much current due to voltage instability; in addition, the preset voltage ensures that the working current of the first switch tube is less than the preset current, so that the first switch tube is within the normal working range and will not be damaged by overheating due to excessive current, thereby protecting the stable operation of the motor controller and the entire hard-wired wake-up circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the prior art and the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a hard-wired wake-up circuit provided in this application;

[0028] Figure 2 A schematic diagram of a hard-line wake-up protection circuit provided in this application. DETAILED DESCRIPTION

[0029] The core of the present application is to provide a hard-wire wake-up protection circuit and a vehicle, which can detect the voltage of the hard-wire wake-up signal output by the controlled end of the vehicle, and output it to the first switch tube when the voltage reaches a preset voltage, so as to ensure that after the vehicle stops driving, even if the battery voltage is unstable, the wake-up signal can be output only when the voltage reaches an appropriate threshold, thereby avoiding the problem of the first switch tube operating in the variable resistance area and consuming excessive current due to unstable voltage; in addition, the preset voltage ensures that the operating current of the first switch tube is less than the preset current, so as to ensure that the first switch tube is within the normal working range and will not be damaged by overheating due to excessive current, thereby protecting the stable operation of the motor controller and the entire hard-wire wake-up circuit.

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] First, as Figure 2 As shown, the present application provides a hard-line wake-up protection circuit, which is applied to a hard-line wake-up circuit of a vehicle. The hard-line wake-up circuit includes a battery 1, a first switch tube and a motor controller. The output positive terminal of the battery 1 is connected to the positive terminal of the power supply of the motor controller through the first switch tube, and the output negative terminal of the battery 1 is connected to the negative terminal of the power supply of the motor controller. The hard-line wake-up protection circuit includes:

[0032] A voltage detection circuit, the input end of which is connected to the control end of the vehicle, and the output end of which is connected to the control end of the first switch tube Q1, for detecting the voltage of the hard-line wake-up signal KL15 output by the control end of the vehicle, and when the voltage reaches a threshold voltage, outputting the hard-line wake-up signal KL15 to the first switch tube Q1, so as to turn on the first switch tube Q1;

[0033] The threshold voltage makes the operating current of the first switch tube Q1 smaller than the preset current.

[0034] In this embodiment, the battery 1 is responsible for providing power to the entire circuit system; the first switch tube Q1 is a switch tube connecting the positive terminal of the battery 1 and the positive terminal of the motor controller power supply, and the wake-up function is realized by controlling its conduction state. In an optional embodiment, the first switch tube Q1 can be but is not limited to a PMOS; the motor controller is responsible for controlling the operation of the vehicle motor.

[0035] In the hard-line wake-up protection circuit of the present embodiment, the voltage detection circuit is connected to the control end of the vehicle, and is used to detect the voltage of the hard-line wake-up signal KL15 output by the vehicle control end. When the voltage reaches the threshold voltage, the circuit outputs the wake-up signal to the first switch tube Q1 to turn it on. Among them, the threshold voltage is a preset value (or a clamping value determined by a hardware circuit), which is used to ensure that the operating current of the first switch tube Q1 is less than the preset current. When the voltage detection circuit detects that the voltage of the hard-line wake-up signal KL15 output by the vehicle control end reaches the threshold voltage, the wake-up signal will be output to the first switch tube Q1, which can avoid the first switch tube Q1 working in the variable resistance area due to voltage instability, thereby consuming too much current.

[0036] In summary, in this embodiment, by introducing a voltage detection circuit and setting a threshold voltage, it can be ensured that after the vehicle stops running, even if the voltage of the battery 1 is unstable, the wake-up signal can be output only when the voltage reaches a suitable threshold. At the same time, the setting of the preset voltage ensures that the operating current of the first switch tube Q1 is less than the preset current, so that the first switch tube Q1 is within the normal working range and will not be overheated and damaged due to excessive current, thereby protecting the stable operation of the motor controller and the entire hard-wired wake-up circuit.

[0037] In one embodiment, the hard-line wake-up circuit also includes: a second switch tube Q2, a first end of the second switch tube Q2 is connected to the control end of the first switch tube Q1, a second end of the second switch tube Q2 is connected to the negative output end of the battery 1, and the control end of the second switch tube Q2 is connected to the voltage detection circuit; the voltage detection circuit is specifically used to detect the voltage of the hard-line wake-up signal KL15 output by the control end of the vehicle, and when the voltage reaches a threshold voltage, the hard-line wake-up signal KL15 is output to the second switch tube Q2 to turn on the second switch tube Q2 and the first switch tube Q1.

[0038] Furthermore, the present embodiment may also be provided with a second switch tube Q2, the control end of which is connected to the voltage detection circuit, and when the voltage of the hard-line wake-up signal KL15 meets a specific condition (i.e. reaches a preset voltage), the second switch tube Q2 is turned on, thereby grounding the control end of the first switch tube Q1, thereby turning on the first switch tube Q1. In an optional embodiment, the first switch tube Q1 may be, but not limited to, a PMOS, and the second switch tube Q2 may be, but not limited to, an NPN transistor.

[0039] In one embodiment, the voltage detection circuit includes a reference circuit and a comparison circuit; a first input end of the comparison circuit is connected to a control end of the vehicle, a second input end of the comparison circuit is connected to the reference circuit, and an output end of the comparison circuit is connected to a control end of the second switch tube Q2; the reference circuit is used to output a threshold voltage, and the comparison circuit is used to output a hard-line wake-up signal KL15 to the second switch tube Q2 when the voltage at the first input end is greater than the voltage at the second input end, so as to turn on the second switch tube Q2 and the first switch tube Q1.

[0040] In this embodiment, the voltage detection circuit is composed of a reference circuit and a comparison circuit, and is connected to the control end of the vehicle. The specific working process is as follows: the function of the reference circuit is to output a threshold voltage, which is used to compare with the hard-line wake-up signal KL15. The selection of the threshold voltage must ensure that the working current of the first switch tube Q1 is less than the preset current to meet the design requirements of the circuit; one of the input ends of the comparison circuit is respectively connected to the control end of the vehicle, and is used to receive the hard-line wake-up signal KL15 voltage from the vehicle control end; the other input end is connected to the reference circuit, and is used to receive the threshold voltage output by the reference circuit. When the voltage of the hard-line wake-up signal KL15 transmitted by the control end of the vehicle is greater than the threshold voltage output by the reference circuit, the comparison circuit outputs the hard-line wake-up signal KL15 to the control end of the second switch tube Q2. In this way, when the voltage of the hard-line wake-up signal KL15 reaches the threshold voltage, the second switch tube Q2 and the first switch tube Q1 will be turned on in sequence to achieve the normal operation of the hard-line wake-up protection circuit.

[0041] By introducing the reference circuit and the comparison circuit, the voltage detection circuit can detect and compare the voltage of the hard-line wake-up signal KL15 to ensure that the second switch tube Q2 and the first switch tube Q1 are turned on under appropriate conditions. This design can improve the reliability and stability of the hard-line wake-up protection circuit, ensure the effective transmission of the wake-up signal, and meet the design requirements of the circuit.

[0042] In one embodiment, the comparison circuit is a comparator U1;

[0043] The positive input terminal of the comparator U1 is the first input terminal of the comparison circuit, the negative input terminal of the comparator U1 is the second input terminal of the comparison circuit, and the power supply terminal of the comparator U1 is connected to the control terminal of the vehicle;

[0044] The comparator U1 is used to output the hardware wake-up signal output by the control end of the vehicle to the second switch tube Q2 when the voltage at the positive input end is greater than the voltage at the negative input end, so as to turn on the second switch tube Q2 and the first switch tube Q1.

[0045] In this embodiment, the comparison circuit is a comparator U1. The comparator U1 is used to output its own power supply, that is, the hardware wake-up signal output by the control end of the vehicle, to the second switch tube Q2 when the voltage at the positive input end is greater than the voltage at the negative input end, so as to turn on the second switch tube Q2 and the first switch tube Q1. In other words, the comparator U1 compares the input voltage of the control end with the reference voltage. When the input voltage is higher than the reference voltage, the comparator U1 outputs a signal (that is, its own power supply voltage), thereby activating the second switch tube Q2 to turn it on, thereby turning on the first switch tube Q1. This comparison circuit plays a key role in implementing the hard-line wake-up protection circuit, ensuring that the circuit works normally under appropriate conditions.

[0046] In one embodiment, the reference circuit includes a first resistor R1, a second resistor R2, a third resistor R3 and a first voltage regulator tube TL431; the first end of the first resistor R1 is connected to the control end of the vehicle, the second end of the first resistor R1 is respectively connected to the cathode of the first voltage regulator tube TL431, the first end of the second resistor R2 and the second input end of the comparison circuit, the second end of the second resistor R2 is respectively connected to the first end of the third resistor R3 and the reference end of the first voltage regulator tube TL431, the second end of the third resistor R3 is respectively connected to the anode of the first voltage regulator tube TL431 and the negative output end of the battery 1, and the parameter of the first voltage regulator tube TL431 is set to the threshold voltage.

[0047] In this embodiment, the reference circuit includes a first resistor R1, a second resistor R2, a third resistor R3 and a first voltage regulator tube TL431. In this circuit, the first resistor R1, the second resistor R2 and the third resistor R3 form a voltage divider, which divides the voltage input from the vehicle control terminal into a reference voltage and a voltage input from the comparison circuit. The first voltage regulator tube TL431 is used to stabilize the voltage after voltage division below the set threshold voltage when the voltage of the input hard-line wake-up signal KL15 fluctuates, thereby ensuring the normal operation of the comparator U1. Therefore, through the construction and connection of the reference circuit, the input voltage of the comparison circuit can be detected and controlled, and the hard-line wake-up signal KL15 can be output to the second switch tube Q2 to turn on the second switch tube Q2 and the first switch tube Q1.

[0048] In one embodiment, the hard-line wake-up circuit further includes a fourth resistor R4 and a fifth resistor R5; the first end of the fourth resistor R4 is connected to the control end of the vehicle, the second end of the fourth resistor R4 is respectively connected to the first end of the fifth resistor R5 and the first input end of the comparison circuit, and the second end of the fifth resistor R5 is connected to the negative output end of the battery 1. In this embodiment, the fourth circuit and the fifth circuit form a voltage divider circuit, and the output signal of this voltage divider is input to the first input end of the comparison circuit (the positive input end of the comparator U1) as the voltage signal of the collected hard-line wake-up signal KL15. Through such a design, when the voltage output by the vehicle control end exceeds the threshold voltage set in the comparison circuit, the comparator U1 will output the hardware wake-up signal to the second switch tube Q2, so that the second switch tube Q2 and the first switch tube Q1 are turned on, thereby realizing the wake-up protection of the vehicle.

[0049] In one embodiment, the hard-line wake-up circuit further includes a second voltage regulator tube Z2, the cathode of the second voltage regulator tube Z2 is connected to the positive output terminal of the battery 1, and the anode of the second voltage regulator tube Z2 is connected to the control terminal of the first switch tube Q1. In this embodiment, the second voltage regulator tube Z2 serves to stabilize the circuit, prevent the first switch tube Q1 from being broken down, and ensure the safety and reliability of the circuit.

[0050] In one embodiment, the hard-line wake-up circuit also includes a third voltage regulator tube Z3, the anode of the third voltage regulator tube Z3 is connected to the control end of the second switch tube Q2, the cathode of the third voltage regulator tube Z3 is connected to the output end of the voltage detection circuit, and the parameter of the third voltage regulator tube Z3 is set to a preset voltage, the preset voltage is less than the threshold voltage, and the difference between the preset voltage and the threshold voltage is within a preset range.

[0051] In this embodiment, a third voltage regulator tube Z3 is also included. The third voltage regulator tube Z3 can stabilize the voltage by being connected to the output end of the voltage detection circuit. The parameters of the third voltage regulator tube Z3 are set to a preset voltage, which is less than the threshold voltage, and the difference between the preset voltage and the threshold voltage is within a preset range. For example, the parameters of the third voltage regulator tube Z3 are set to 3.9V. Since the conduction voltage drop of the second switch tube Q2 is about 0.7V, in order to ensure that the second switch tube Q2 is reliably turned on, and then the first switch tube Q1 is reliably turned on, the parameters of the first voltage regulator tube TL431 are set to above 4.6V, such as 5V. The presence of the third voltage regulator tube Z3 can ensure the stability of the voltage and ensure that the second switch tube Q2 can be turned on normally, thereby realizing the normal operation of the hard-line wake-up circuit.

[0052] Furthermore, a sixth resistor R6 is provided, a first end of which is connected to the output end of the comparator U1, and a second end of which is connected to the cathode of the third voltage-stabilizing tube Z3; a seventh resistor R7 is provided, a first end of which is connected to the anode of the third voltage-stabilizing tube Z3, and a second end of which is connected to the negative output end of the battery 1; an eighth resistor R8 is provided, a first end of which is connected to the anode of the second voltage-stabilizing tube Z2 and the control end of the first switch tube Q1, and a second end of which is connected to the first end of the second switch tube Q2; a capacitor C1 is provided, and C1 is connected in parallel with the second voltage-stabilizing tube Z2.

[0053] In the second aspect, the present application also provides a vehicle, including a battery 1, a first switch tube Q1 and a motor controller, and also includes the above-mentioned hard-wired wake-up protection circuit, the output positive terminal of the battery 1 is connected to the positive power terminal of the motor controller through the first switch tube Q1, the output negative terminal of the battery 1 is connected to the negative power terminal of the motor controller, and the hard-wired wake-up protection circuit is connected to the control terminal of the first switch tube Q1.

[0054] For the introduction of the vehicle, please refer to the above embodiment, and this application will not go into details here.

[0055] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hard-line wake-up protection circuit, characterized in that: A hard-wire wake-up circuit applied to a vehicle, the hard-wire wake-up circuit comprising a battery, a first switch tube and a motor controller, the positive output terminal of the battery is connected to the positive power terminal of the motor controller through the first switch tube, the negative output terminal of the battery is connected to the negative power terminal of the motor controller, and the hard-wire wake-up protection circuit comprises: a voltage detection circuit, the input end of which is connected to the control end of the vehicle, the output end of which is connected to the control end of the first switch tube, and is used to detect the voltage of the hard-line wake-up signal output by the control end of the vehicle, and when the voltage reaches a threshold voltage, output the hard-line wake-up signal to the first switch tube to turn on the first switch tube; The threshold voltage makes the operating current of the first switch tube smaller than a preset current.

2. The hard-wire wake-up protection circuit according to claim 1, characterized in that: The hard-line wake-up circuit further comprises: a second switch tube, wherein a first end of the second switch tube is connected to a control end of the first switch tube, a second end of the second switch tube is connected to a negative output end of the battery, and a control end of the second switch tube is connected to the voltage detection circuit; The voltage detection circuit is specifically used to detect the voltage of the hard-line wake-up signal output by the control end of the vehicle, and when the voltage reaches a threshold voltage, outputs the hard-line wake-up signal to the second switch tube to turn on the second switch tube and the first switch tube.

3. The hard-wire wake-up protection circuit according to claim 2, characterized in that: The voltage detection circuit includes a reference circuit and a comparison circuit; The first input end of the comparison circuit is connected to the control end of the vehicle, the second input end of the comparison circuit is connected to the reference circuit, and the output end of the comparison circuit is connected to the control end of the second switch tube; The reference circuit is used to output the threshold voltage, and the comparison circuit is used to output the hard-line wake-up signal to the second switch tube when the voltage of the first input terminal is greater than the voltage of the second input terminal, so as to turn on the second switch tube and the first switch tube.

4. The hard-line wake-up protection circuit according to claim 3, characterized in that: The comparison circuit is a comparator; The positive input terminal of the comparator is the first input terminal of the comparison circuit, the negative input terminal of the comparator is the second input terminal of the comparison circuit, and the power supply terminal of the comparator is connected to the control terminal of the vehicle; The comparator is used to output the hardware wake-up signal output by the control end of the vehicle to the second switch tube when the voltage at the positive input end is greater than the voltage at the negative input end, so as to turn on the second switch tube and the first switch tube.

5. The hard-wire wake-up protection circuit according to claim 3, characterized in that: The reference circuit includes a first resistor, a second resistor, a third resistor and a first voltage regulator tube; The first end of the first resistor is connected to the control end of the vehicle, the second end of the first resistor is respectively connected to the cathode of the first voltage regulator tube, the first end of the second resistor and the second input end of the comparison circuit, the second end of the second resistor is respectively connected to the first end of the third resistor and the reference end of the first voltage regulator tube, the second end of the third resistor is respectively connected to the anode of the first voltage regulator tube and the negative output end of the battery, and the parameter of the first voltage regulator tube is set to the threshold voltage.

6. The hard-wire wake-up protection circuit according to claim 5, characterized in that: The hard-line wake-up circuit further includes a fourth resistor and a fifth resistor; The first end of the fourth resistor is connected to the control end of the vehicle, the second end of the fourth resistor is respectively connected to the first end of the fifth resistor and the first input end of the comparison circuit, and the second end of the fifth resistor is connected to the negative output end of the battery.

7. The hard-line wake-up protection circuit according to any one of claims 2 to 6, characterized in that: The hard-line wake-up circuit also includes a third voltage regulator tube, the anode of the third voltage regulator tube is connected to the control end of the second switch tube, the cathode of the third voltage regulator tube is connected to the output end of the voltage detection circuit, and the parameter of the third voltage regulator tube is set to a preset voltage, the preset voltage is less than the threshold voltage, and the difference between the preset voltage and the threshold voltage is within a preset range.

8. The hard-wire wake-up protection circuit according to claim 1, characterized in that: The hard-line wake-up circuit also includes a second voltage regulator tube, a cathode of the second voltage regulator tube is connected to the positive output terminal of the battery, and an anode of the second voltage regulator tube is connected to the control terminal of the first switch tube.

9. A vehicle, characterized in that: It includes a battery, a first switch tube and a motor controller, and also includes a hard-line wake-up protection circuit as described in any one of claims 1 to 8, the output positive terminal of the battery is connected to the positive terminal of the power supply of the motor controller through the first switch tube, the output negative terminal of the battery is connected to the negative terminal of the power supply of the motor controller, and the hard-line wake-up protection circuit is connected to the control terminal of the first switch tube.

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