CN116494826A - A low-voltage control circuit for an all-in-one controller - Google Patents

Abstract

The invention discloses a low-voltage electric control circuit of an all-in-one controller, which includes a wake-up circuit for outputting a high-level signal after obtaining the ON gear power of a car or a charging power supply; a conduction circuit for obtaining a high-level signal and performing hierarchical wake-up; and a software control circuit for obtaining a high-level signal and controlling the wake-up time of the on-circuit and the power-off signal. In the present invention, the high-level signal is used as a wake-up signal instead of a power supply, so that the current on the two low-voltage distribution cables of the ON gear and the charging wake-up power can be reduced; the MOS tube is used to replace the relay, which can effectively Improve the life and reliability of the circuit; adopt the first-level conduction circuit and the second-level conduction circuit, make full use of the low-voltage power supply, and supply power to each part when it needs to work, and do not supply power when it does not need to work, which improves the utilization of low-voltage power supply Rate.

Description

A low-voltage control circuit for an all-in-one controller

technical field

The invention relates to the technical field of an all-in-one controller, in particular to a low-voltage control circuit of an all-in-one controller.

Background technique

In new energy vehicles, the all-in-one controller plays the role of controlling the motor work and distributing the voltage flow. When the multi-in-one controller is working normally, the vehicle battery needs to provide low-voltage control power. After the multi-in-one controller receives the low-voltage control power, the corresponding low-voltage circuit can be turned on to realize the functions of controlling the rotation of the motor and distributing the voltage flow. After the low-voltage control power of the battery enters the all-in-one controller, how to use the all-in-one controller reasonably and efficiently is what needs to be considered when designing the all-in-one controller.

Low-voltage power-on means that the whole vehicle distributes the low-voltage power of the battery to the all-in-one controller through the external control switch. Low-voltage power-off means that the whole vehicle disconnects the low-voltage power supply distributed to the all-in-one controller through the external control switch. The overall function of the general all-in-one controller is divided into four parts:

The motor controller (Moter Control Unit, hereinafter referred to as "MCU") plays the role of controlling the main motor of the new energy vehicle;

The DC-AC converter (Direct current-Alternating current converter, hereinafter referred to as "DCAC"), plays the function of controlling the auxiliary motor of the new energy vehicle;

DC-DC converter (Direct current-Direct current converter, hereinafter referred to as "DCDC"), which functions to charge the vehicle battery and supply power to other low-voltage components;

The power distribution unit (Power Distribution Unit, hereinafter referred to as "PDU") functions to supply power to the power distribution part of the vehicle;

There are generally two ways to power on the multi-in-one controller of new energy vehicles at low voltage. One is to turn the car key to the ON gear to wake up the multi-in-one controller by turning it to the ON gear. To be in the ready-to-drive state, the MCU, DCAC, DCDC and PDU parts all need to be powered to work. The second is when the car is DC charged, the DC charging gun gives the multi-in-one motor controller a charging wake-up signal to wake up. At this time, because the vehicle is in the charging state and cannot drive, the MCU and DCAC parts do not need to work and do not need to be powered. Only DCDC and The PDU part needs to be powered to work. At present, the low-voltage power-on of the all-in-one controller for new energy vehicles has the following disadvantages:

1. Use the external ON power and charging wake-up signal directly as a low-voltage control power supply, and the all-in-one controller directly consumes the ON power and charging wake-up power, which will cause a large current consumption on the ON power and charging wake-up power , high over-current capability required for supporting low-voltage cables and low-voltage protection devices.

2. Use relays to control the on-off of low-voltage electricity. There will be a large current at the moment the relay is closed. In the case of multi-in-one long-term work, the relay has a short life and The disadvantage of being prone to failure.

3. There is no distinction between MCU, DCAC, DCDC and PDU, and all four parts are supplied with electricity. When the new energy vehicle is in the charging state, the MCU and DCAC parts do not work, and low-voltage power is supplied to these two parts. , will consume excess power.

Contents of the invention

The purpose of the present invention is to provide a low-voltage electric control circuit for an all-in-one controller.

In order to achieve the above object, the present invention provides the following technical solution: a low-voltage control circuit for an all-in-one controller, including:

The wake-up circuit is used to output a high-level signal after obtaining the car's ON gear or charging power;

A turn-on circuit for obtaining a high-level signal and performing hierarchical wake-up; and

The software control circuit is used to obtain the high-level signal and control the wake-up time of the on-circuit and the power-off signal;

The conduction circuit includes:

A primary conduction circuit for conducting DCDC, PDU; and

A secondary conduction circuit for conducting the MCU and DCAC, the secondary conduction circuit is conducted through the primary conduction circuit.

Further, the wake-up circuit includes resistors R7, R8, capacitor C4, diode D1, Zener diode D2, and transistor Q3, the cathode of the diode D1 is connected to the cathode of the Zener diode D2, and the anode of the Zener diode D2 The base of the transistor Q3 is connected through the resistor R7, one end of the capacitor C4 and the resistor R8 is connected between the resistor R7 and the transistor Q3, and the other end of the capacitor C4 and the resistor R8 is connected to the emitter of the transistor Q3, the capacitor C4 and resistor R8 are connected in parallel.

Further, the primary conduction circuit includes resistors R14, R15, R17, capacitor C7, and MOS transistor Q6, one end of the resistor R15 is connected to the drain of the MOS transistor Q6, and the other end of the resistor R15 is connected to the resistor R14 One end of the resistor R17 is connected to the base of the MOS transistor Q6, one end of the capacitor C7 is connected between the resistor R15 and the MOS transistor Q6, and the other end of the capacitor C7 is connected to the resistor R15 and the resistor R14 through the other end of the resistor R17 between;

The secondary conduction circuit includes resistors R16, R18, R19, capacitor C8, and MOS transistor Q5. One end of the resistor R16 is connected to the drain of the MOS transistor Q5, and the other end of the resistor R16 is connected to the resistor R19. One end of the resistor R18 is connected to the base of the MOS transistor Q5, one end of the capacitor C8 is connected between the resistor R16 and the MOS transistor Q5, and the other end of the capacitor C8 is connected between the resistor R16 and the resistor R19 through the other end of the resistor R18.

Further, the software control circuit includes resistors R1, R2, R3, R4, R5, R6, R20, capacitors C1, C2, C3, transistors Q1, Q2, optocoupler U1, and the resistor R4 is connected to the base of the transistor Q1 connected, and the emitter of the transistor Q1 is connected between the resistor R4 and the transistor Q1 through the resistor R3, the capacitor C1 is connected in parallel with the resistor R3, the collector of the transistor Q1 is connected to the pin 2 of the optocoupler U1, and the capacitor C2 After connecting with the resistor R20, it is connected to pin 1 of the optocoupler U1. One end of the resistor R1 is connected between the resistor R20 and the optocoupler U1, and the other end of the resistor R1 is connected between the transistor Q1 and the optocoupler U1. The 4-pin of the optocoupler U1 is connected to the resistor R6, and the 3-pin of the optocoupler U1 is connected to the base of the transistor Q2 through the resistor R2, and the emitter of the transistor Q2 is connected between the resistor R2 and the transistor Q2 through the resistor R5, The capacitor C3 is connected in parallel with the resistor R5, and the collector of the triode Q2 is connected with the resistor R14.

Further, it also includes a secondary wake-up lock circuit that controls the wake-up state of the turn-on circuit after acquiring the power-off signal.

Further, the secondary wake-up lock circuit includes resistors R9, R10, R11, R12, R13, capacitors C5, C6, transistors Q4, Q7, and a Zener diode D3. One end of the resistor R10 is connected to the resistor R11 and then connected to into the collector of the triode Q7, the emitter of the triode Q7 is connected to one end of R13 through the capacitor C6, the other end of R13 is connected to the collector of the transistor Q4, the resistor R12 is connected in parallel with the capacitor C6, and the emitter of the triode Q4 The pole is connected to the other end of the resistor R10, the capacitor C5 is connected in parallel with the resistor R10 and then connected to the base of the transistor Q4, and the anode of the Zener diode is connected to the resistor R9 and then connected between the resistor R10 and the resistor R11.

As can be seen from the foregoing technical solutions, the present invention has the following beneficial effects:

1. The high-level signal is used as a wake-up signal instead of a power supply, which can reduce the current on the low-voltage distribution cables of the ON gear power and the charging wake-up power, reduce the wire diameter, and also reduce the Overcurrent requirements for low-voltage protection devices, thereby reducing costs;

2. Use MOS tubes instead of relays to control the on-off of low-voltage electricity. The switching times of the MOS tube is much higher than that of the relay, and the flow capacity of the MOS tube is also higher than that of the relay. Using the MOS tube for low-voltage on-off control can effectively improve the life and reliability of the circuit;

3. The first-level conduction circuit and the second-level conduction circuit are adopted. The first-level conduction circuit wakes up the DCDC and PDU part, and the second-level conduction circuit wakes up the MCU and DCAC part. When the ON gear comes in, both the first-level and second-level Wake up, the four parts of MCU, DCAC, DCDC and PDU are powered. When the charging wake-up power comes in, only the DCDC and PDU of the first level are woken up. The MCU and DCAC do not work and do not need to be powered. The secondary conduction circuit makes full use of the low-voltage power supply, and each part is powered only when it needs to work, and is not powered when it does not need to work, which improves the utilization rate of the low-voltage power supply.

4. The software control method is realized by the software control circuit to control the power-on and power-off time of the low-voltage power of the multi-in-one controller, realizing the intelligent application of the multi-in-one controller.

Description of drawings

Fig. 1 is overall circuit diagram of the present invention;

Fig. 2 is a wake-up circuit diagram of the present invention;

Fig. 3 is a software control circuit diagram of the present invention;

Fig. 4 is a conduction circuit diagram of the present invention;

FIG. 5 is a circuit diagram of a secondary wake-up lockout according to the present invention.

Detailed ways

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "set with", "connected", etc. should be understood in a broad sense, such as "connected", which may be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to FIG. 1 , the present invention provides an all-in-one controller low-voltage control circuit, including a wake-up circuit, a conduction circuit, a software control circuit and a secondary wake-up lockout circuit. As shown in Figure 2, the wake-up circuit includes resistors R7, R8, capacitor C4, diode D1, Zener diode D2, and transistor Q3, the cathode of the diode D1 is connected to the cathode of the Zener diode D2, and the cathode of the Zener diode D2 The positive pole is connected to the base of the transistor Q3 through the resistor R7, one end of the capacitor C4 and the resistor R8 is connected between the resistor R7 and the transistor Q3, and the other end of the capacitor C4 and the resistor R8 is connected to the emitter of the transistor Q3, the Capacitor C4 and resistor R8 are connected in parallel;

Resistors R7 and R8 act as a voltage divider, capacitor C4 acts as a filter, D1 acts as an anti-reverse connection, D2 is a voltage regulator tube that reduces voltage, and Q3 is an NPN transistor. When the base voltage is high , Q3 is turned on.

+24V_ON is the ON gear power provided by the whole vehicle to the multi-in-one controller. When the key on the car is turned to the ON gear, +24V_ON is a high level 24V. After the voltage reduction of D2, the divided voltage value of R7 and R8 is greater than 0.7 V, then the Q3 transistor is turned on, and the driving terminal of Q6 in Figure 2 is pulled to a low level, then Q6 is turned on, and the +24V voltage reaches +24V_DC_ON through Q6, which wakes up the DCDC and PDU part of the first level; similarly, when the whole When the car is charged with DC, QC_CTL is at a high level of 24V. Through the function of D1, the Q3 transistor will also be turned on, that is, Q6 can also be turned on. At this time, the DCDC and PDU part of the first level can also be awakened, namely +24V_ON and QC_CTL The relationship between each other is logical or, and any one of them becomes high level, which can wake up the DCDC and PDU part of the first stage.

As shown in Figure 3, the software control circuit includes resistors R1, R2, R3, R4, R5, R6, R20, capacitors C1, C2, C3, transistors Q1, Q2, and optocoupler U1, and the base of the resistor R4 and the transistor Q1 The emitter of the transistor Q1 is connected between the resistor R4 and the transistor Q1 through the resistor R3, the capacitor C1 is connected in parallel with the resistor R3, the collector of the transistor Q1 is connected to the pin 2 of the optocoupler U1, and the capacitor After C2 is connected with the resistor R20, it is connected to pin 1 of the optocoupler U1, one end of the resistor R1 is connected between the resistor R20 and the optocoupler U1, and the other end of the resistor R1 is connected between the triode Q1 and the optocoupler U1, The 4-pin of the optocoupler U1 is connected to the resistor R6, and the 3-pin of the optocoupler U1 is connected to the base of the transistor Q2 through the resistor R2, and the emitter of the transistor Q2 is connected between the resistor R2 and the transistor Q2 through the resistor R5 , the capacitor C3 is connected in parallel with the resistor R5, and the collector of the triode Q2 is connected with the resistor R14;

Resistors R2, R3, R4, and R5 act as voltage dividers, and R1, R6, and R20 act as current limiters to limit the current flowing through the circuit and protect the device.

The working principle of this software control circuit is as follows: DSP_IO_CLT signal is controlled by software. When it detects that +24V_ON or QC_CTL in the wake-up circuit is high level 24V, the software will set DSP_IO_CLT signal to high level. After the voltage is turned on, the Q1 transistor is turned on, and the current flows from +3.3V through the primary side of the optocoupler U1 to GND, then the primary side of the optocoupler U1 is turned on, and after the primary side of U1 is turned on, the secondary side of U1 also It will be turned on, then +24V will drive the triode Q2 to turn on through the function of R6, R2 and R5. After Q2 is turned on, the driving terminal of Q6 will be pulled to low level, then Q6 will be turned on, and the +24V voltage will reach +24V_DC_ON through Q6 , wake up the DCDC and PDU part of the first level.

At this time, due to the conduction effect of Q2, even if the hardware wake-up signal +24V_ON and QC_CTL are removed, Q6 can still be kept on, and the time for Q6 to be kept on at this time can be flexibly set through the software control circuit. The software control circuit is based on In the actual situation, it can adapt to the needs of different vehicle logics. After the solution is finalized, by changing the software configuration, the adaptation to the needs of different vehicle models can be realized. After the hardware signal is removed, the power-off time can be controlled by software, and the software can also be associated with the state of the high-voltage relay to decide whether to delay power-off. Therefore, the existence of the software control circuit realizes all-in-one control The diversification and intelligence of switching on and off the device.

As shown in Figure 4, the conduction circuit includes a primary conduction circuit and a secondary conduction circuit, wherein the primary conduction circuit includes resistors R14, R15, R17, capacitor C7, and MOS transistor Q6, and one end of the resistor R15 is connected to The drain of the MOS transistor Q6 is connected, and the other end of the resistor R15 is connected to the resistor R14, one end of the resistor R17 is connected to the base of the MOS transistor Q6, and one end of the capacitor C7 is connected between the resistor R15 and the MOS transistor Q6, The other end of the capacitor C7 is connected between the resistor R15 and the resistor R14 through the other end of the resistor R17;

The secondary conduction circuit includes resistors R16, R18, R19, capacitor C8, and MOS transistor Q5. One end of the resistor R16 is connected to the drain of the MOS transistor Q5, and the other end of the resistor R16 is connected to the resistor R19. One end of the resistor R18 is connected to the base of the MOS transistor Q5, one end of the capacitor C8 is connected between the resistor R16 and the MOS transistor Q5, and the other end of the capacitor C8 is connected between the resistor R16 and the resistor R19 through the other end of the resistor R18;

Q5 and Q6 are the two MOS tubes of the 24V main circuit, which play the role of controlling the on-off of the 24V voltage. The four resistors R14, R15, R16, and R19 play the role of resistive voltage divider. When the voltage divided by R14 is less than 24V , then the MOS tube Q6 is turned on; when the voltage divided by R19 is less than 24V, the MOS tube Q5 is turned on, R17 and R18 are similar, and act as a current limiter, limiting the current flowing through the MOS tube, and C7 and C8 act as a filter , can effectively filter out the interference of the driving end of the MOS tube, and prevent the MOS tube from being misconducted during operation.

+24V is the low-voltage power supply provided by the whole vehicle to the all-in-one controller. The current dissipated by the low-voltage circuit will flow through it. The two MOS tubes are controlled by software and hardware at the same time. The software is controlled by the single-chip microcomputer of the all-in-one controller and The software is controlled by the control circuit, and the hardware is controlled by the external ON gear and the high-level signal of the charging power supply. MOS tube Q6 is the main switch for primary wake-up. When Q6 is turned on, the +24V voltage reaches +24V_DC_ON through Q6, and the DCDC and PDU are partially powered. The multi-in-one controller can realize the function of DC charging. MOS tube Q5 is the secondary The main switch for wake-up, only the first-level wake-up is turned on first, and the second-level wake-up will be turned on. When Q5 is turned on, the +24V voltage reaches +24V_AC_ON through Q5, and the MCU and DCAC are also powered. The multi-in-one controller can realize control The function of main motor and auxiliary motor running.

By turning on and off the two MOS transistors Q5 and Q6 in the main circuit of the 24V low-voltage power supply, the first-level wake-up and second-level wake-up functions of the low-voltage circuit of the all-in-one controller can be realized, which improves the use efficiency of the 24V low-voltage power supply and reduces the In order to reduce the power consumption of the whole vehicle, MOS tubes Q5 and Q6 are used, with high switching times and strong ability to pass instantaneous current. MOS tubes are used instead of relays to control the on-off of low-voltage power. The switching times of MOS tubes are much higher than that of relays, and the flow capacity of MOS tubes is also higher than that of relays. Using MOS tubes for low-voltage on-off control can effectively improve the life and reliability of circuits.

As shown in Figure 5, the secondary wake-up lock circuit includes resistors R9, R10, R11, R12, R13, capacitors C5, C6, transistors Q4, Q7, and voltage regulator diode D3. After one end of the resistor R10 is connected to the resistor R11 The collector of the triode Q7 is connected, the emitter of the triode Q7 is connected to one end of R13 through the capacitor C6, the other end of R13 is connected to the collector of the transistor Q4, the resistor R12 is connected in parallel with the capacitor C6, and the transistor Q4 The emitter is connected to the other end of the resistor R10, the capacitor C5 is connected in parallel with the resistor R10 and then connected to the base of the transistor Q4, and the anode of the Zener diode is connected to the resistor R9 and then connected between the resistor R10 and the resistor R11.

Resistors R9, R10, R11, R12, and R13 all act as voltage dividers, Q4 is an NPN transistor, and Q7 is a PNP transistor, all of which act as switches. D3 plays the role of reducing the voltage, which can reduce the external +24V_ON voltage and then transmit it to the Q4 transistor.

The working principle of this circuit is as follows: When the vehicle key is turned to the ON gear, the external +24V_ON signal becomes a high level 24V, then after the voltage of D3 is reduced, the divided voltage value of R9 and R10 is greater than 0.7V, and the Q4 transistor is turned on , pull +24V_AC_CTL to low level, and then through the voltage division function of R16 and R19 in the conduction circuit, the driving end of Q5 is pulled to low level, and then the MOS transistor Q5 is turned on. From the principle of the 4 wake-up circuit, it can be known that Q6 is turned on at this time, and the +24V power has reached +24V_DC_ON, and the conduction of Q5 makes the +24V power reach +24V_AC_ON, which wakes up the secondary MCU and DCAC part, that is, this circuit also plays a secondary role. At the same time, +24V_DC_ON passes through the voltage division function of R12 and R13, so that the driving terminal of Q7 becomes low level, the PNP transistor Q7 is turned on, and the +24V_DC_ON voltage enters the lower end of Q7, and is divided by R10 and R11 After the action, the driving end of the NPN transistor Q4 is clamped at a high level, and Q4 remains in a conducting state. Even if the +24V_ON high level signal is eliminated, Q4 cannot be driven by D3. This circuit can also conduct Q4 through Q7 , that is, +24V_AC_CTL remains low, forming the effect of this circuit locking. The special feature of this hardware lock circuit is that it only needs to send a high level from +24V_ON to keep the MOS transistor Q5 turned on. To unlock this circuit and Q4 to return to the off state, +24V_DC_ON must be powered off. It can be seen from the software control circuit that the power-off of +24V_DC_ON is controlled by the DSP_IO_CLT signal sent by the software, and the whole circuit thus forms a closed loop. The main circuit of the 24V low-voltage power supply only needs the hardware signal +24V_ON to trigger Once, then it is completely controlled by software, thus realizing the software controllability and intelligence of the entire circuit.

The present invention outputs a high-level signal after obtaining the ON gear power of the car or the charging power source through the wake-up circuit, and uses the high-level signal only as a wake-up signal, not as a power supply, so that the ON gear power and the charging wake-up power can be reduced. The current on the low-voltage distribution cables reduces the wire diameter, and also reduces the overcurrent requirements for low-voltage protection devices, thereby reducing costs; the conduction circuit obtains high-level signals and realizes hierarchical wake-up, and the DCDC and PDU Part of it is used as a first-level wake-up, and the MCU and DCAC part is used as a second-level wake-up. When the ON power comes in, both the first and second levels are woken up. The four parts of MCU, DCAC, DCDC and PDU are all powered. When charging When the wake-up power comes in, only the first-level DCDC and PDU are woken up. The MCU and DCAC do not work and do not need to be powered. Through the first-level wake-up and the second-level wake-up, the low-voltage power supply can be fully utilized. All parts are powered when they need to work. No need There is no power supply during work, which improves the utilization rate of the low-voltage power supply; the software control circuit obtains high-level signals and controls the wake-up time of the on-circuit and the power-off signal, and controls the low-voltage power supply of the multi-in-one controller through software control. The power on and off time is short, realizing the intelligent application of the all-in-one controller.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. a kind of control circuit of all-in-one controller low-voltage electricity, is characterized in that, comprises: The wake-up circuit is used to output a high-level signal after obtaining the car's ON gear or charging power; A turn-on circuit for obtaining a high-level signal and performing hierarchical wake-up; and The software control circuit is used to obtain the high-level signal and control the wake-up time of the on-circuit and the power-off signal; The conduction circuit includes: A primary conduction circuit for conducting DCDC, PDU; and A secondary conduction circuit for conducting the MCU and DCAC, the secondary conduction circuit is conducted through the primary conduction circuit. 2. An all-in-one controller low-voltage control circuit according to claim 1, characterized in that: the wake-up circuit includes resistors R7, R8, capacitor C4, diode D1, Zener diode D2, transistor Q3, The cathode of the diode D1 is connected to the cathode of the Zener diode D2, the anode of the Zener diode D2 is connected to the base of the transistor Q3 through the resistor R7, and one end of the capacitor C4 and the resistor R8 is connected to the resistor R7 and the transistor Q3 between, and the other end of the capacitor C4 and the resistor R8 is connected to the emitter of the transistor Q3, and the capacitor C4 and the resistor R8 are connected in parallel. 3. An all-in-one controller low-voltage electric control circuit according to claim 1, characterized in that: the first-stage conduction circuit includes resistors R14, R15, R17, capacitor C7, and MOS transistor Q6. One end of the resistor R15 is connected to the drain of the MOS transistor Q6, and the other end of the resistor R15 is connected to the resistor R14, one end of the resistor R17 is connected to the base of the MOS transistor Q6, and one end of the capacitor C7 is connected to the resistor R15 and the MOS transistor. Between the tube Q6, the other end of the capacitor C7 is connected between the resistor R15 and the resistor R14 through the other end of the resistor R17; The secondary conduction circuit includes resistors R16, R18, R19, capacitor C8, and MOS transistor Q5. One end of the resistor R16 is connected to the drain of the MOS transistor Q5, and the other end of the resistor R16 is connected to the resistor R19. One end of the resistor R18 is connected to the base of the MOS transistor Q5, one end of the capacitor C8 is connected between the resistor R16 and the MOS transistor Q5, and the other end of the capacitor C8 is connected between the resistor R16 and the resistor R19 through the other end of the resistor R18. 4. An all-in-one controller low-voltage electric control circuit according to claim 1, characterized in that: the software control circuit includes resistors R1, R2, R3, R4, R5, R6, R20, capacitors C1, C2, C3, transistors Q1, Q2, optocoupler U1, the resistor R4 is connected to the base of the transistor Q1, and the emitter of the transistor Q1 is connected between the resistor R4 and the transistor Q1 through the resistor R3, the capacitor C1 and the resistor R3 is connected in parallel, the collector of the triode Q1 is connected to pin 2 of optocoupler U1, the capacitor C2 is connected to pin 1 of optocoupler U1 after being connected to resistor R20, one end of resistor R1 is connected, and resistor R20 is connected to optocoupler U1. Between the coupler U1, and the other end of the resistor R1 is connected between the transistor Q1 and the optocoupler U1, the 4th pin of the optocoupler U1 is connected to the resistor R6, and the 3rd pin of the optocoupler U1 is connected to the base of the transistor Q2 through the resistor R2 The emitter of the transistor Q2 is connected between the resistor R2 and the transistor Q2 through the resistor R5, the capacitor C3 is connected in parallel with the resistor R5, and the collector of the transistor Q2 is connected to the resistor R14. 5 . The all-in-one controller low-voltage control circuit according to claim 1 , further comprising a secondary wake-up lockout circuit that controls the wake-up state of the on-circuit after acquiring the power-off signal. 5 . 6. An all-in-one controller low-voltage control circuit according to claim 5, characterized in that: the secondary wake-up lock circuit includes resistors R9, R10, R11, R12, R13, capacitors C5, C6 , triode Q4, Q7, Zener diode D3, one end of the resistor R10 is connected to the collector of the transistor Q7 after being connected to the resistor R11, the emitter of the transistor Q7 is connected to one end of the R13 through the capacitor C6, and the other end of the R13 connected to the collector of the triode Q4, the resistor R12 is connected in parallel with the capacitor C6, the emitter of the triode Q4 is connected to the other end of the resistor R10, and the capacitor C5 is connected to the base of the transistor Q4 after being connected in parallel with the resistor R10, so The anode of the Zener diode is connected to the resistor R9 and connected between the resistor R10 and the resistor R11.