Control circuit and control method for realizing quick startup based on super capacitor

Abstract

The invention discloses a control circuit and a control method for realizing quick startup based on a super capacitor, and the control method comprises the steps: a mainboard control chip judges whether power is cut off according to a power-on detection signal, if power is cut off, a functional assembly is controlled to be closed to enter a low-power-consumption working mode, and a charging control circuit judges whether the voltage of a voltage induction end is reduced or not; if so, the charging control circuit connects the positive electrode power supply end of the super-capacitor protection circuit with the power supply end of the mainboard so as to release the electric energy stored by the super-capacitor to supply power to the mainboard. According to the control method, the super capacitor is charged when the external power supply is not powered off; and when the external power supply is cut off, the functional component is controlled to be closed to enter a low-power-consumption working mode, and meanwhile, the power is supplied to the mainboard by releasing the electric energy stored by the super capacitor, so that the mainboard can quickly respond and complete equipment startup after being electrified, and the startup speed of the terminal system after the external power supply is cut off and then the power supply is reconnected is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of control circuits, and in particular to a control circuit and a control method for realizing rapid startup based on a supercapacitor. Background Art

[0002] Most application scenarios have strict requirements for the fast boot time of the terminal system. The boot screen needs to be displayed within 1 second after power-on and the operation can be performed immediately. However, in order to improve the user experience and the intuitiveness of device interaction, most terminal systems currently require 30-60 seconds from power failure to normal operation. When the system startup time is too long, it will not only affect the availability and real-time performance of the product, but also affect the customer's experience. The existing fast boot methods are all based on software system hibernation technology and boot program optimization. Although the boot speed is improved, the system is still in the shutdown state after power failure; therefore, the existing fast boot methods still need to rely on the uninterrupted supply of external power, and still cannot achieve the application effect of fast boot after the external power is disconnected. Therefore, the existing technology has the problem of being unable to quickly boot after the external power is reconnected. Summary of the invention

[0003] The embodiments of the present invention provide a control circuit and a control method for realizing fast startup based on a supercapacitor, aiming to solve the problem in the prior art that the computer cannot be quickly started after an external power source is reconnected.

[0004] In a first aspect, an embodiment of the present invention discloses a control method for realizing fast startup based on a supercapacitor, which is applied to a control circuit for realizing fast startup based on a supercapacitor, wherein the control circuit includes a charging control circuit, a mainboard control chip, a supercapacitor protection circuit and a power-on detection circuit, the detection output end of the power-on detection circuit is connected to the detection pin of the mainboard control chip, the external power supply pin is connected to the voltage sensing end of the charging control circuit, the two power supply input ends of the charging control circuit are respectively connected to the mainboard power supply end and the positive power supply end of the supercapacitor protection circuit, the supercapacitor protection circuit is connected to the supercapacitor, and the control method includes: The power-on detection circuit obtains a power-on detection signal and outputs it to the mainboard control chip; The mainboard control chip determines whether power is off according to the power-on detection signal; If the power is off, the mainboard control chip controls the functional components to shut down to enter a low power consumption working mode; The charging control circuit determines whether the voltage at the voltage sensing terminal decreases; If the voltage at the voltage sensing end drops, the charging control circuit connects the positive power supply end of the supercapacitor protection circuit to the mainboard power supply end to release the electric energy stored in the supercapacitor to power the mainboard.

[0005] In a second aspect, an embodiment of the present invention further discloses a control circuit for realizing fast startup based on a supercapacitor, wherein the control circuit applies the control method for realizing fast startup based on a supercapacitor as described in the first aspect above, and the control circuit includes a charging control circuit, a mainboard control chip, a supercapacitor protection circuit, and a power-on detection circuit; The detection output end of the power-on detection circuit is connected to the detection pin of the mainboard control chip, the control pin of the mainboard control chip is connected to the control input end of the charging control circuit, and the two power supply input ends of the charging control circuit are respectively connected to the mainboard power supply end and the positive power supply end of the supercapacitor protection circuit, and the supercapacitor protection circuit is connected to the supercapacitor; The charging control circuit includes a charging control chip, a second resistor and a third resistor; The fifth pin of the charging control chip is connected to one end of the second resistor, and the other end of the second resistor is connected to the mainboard control chip as a control input end of the charging control circuit; The sixth pin of the charging control chip is connected to one end of the third resistor, and the other end of the third resistor is connected to the mainboard control chip as another control input end of the charging control circuit; The fifteenth pin and the sixteenth pin of the charging control chip are connected, and the connection point is used as a power supply input terminal to connect the mainboard power supply terminal; The thirteenth pin and the fourteenth pin of the charging control chip are connected, and the connection point is used as another power supply input terminal to connect the positive power supply terminal of the supercapacitor protection circuit.

[0006] The embodiment of the present application discloses a control circuit and control method for realizing fast startup based on a supercapacitor, and the control method includes: the mainboard control chip determines whether the power is off according to the power-on detection signal, and if the power is off, the functional component is controlled to be turned off to enter a low-power working mode, and the charging control circuit determines whether the voltage at the voltage sensing end drops, and if it drops, the charging control circuit connects the positive power supply end of the supercapacitor protection circuit to the mainboard power supply end to release the electric energy stored in the supercapacitor to power the mainboard. The above control method charges the supercapacitor when the external power supply is not cut off; when the external power supply is disconnected, the functional component is controlled to be turned off to enter a low-power working mode, and at the same time, the mainboard is powered by releasing the electric energy stored in the supercapacitor to ensure that the mainboard can respond quickly and complete the device startup after power is turned on, which greatly improves the startup speed of the terminal system after the external power supply is disconnected and then reconnected. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0008] Figure 1 A method flow chart of a control method provided by an embodiment of the present invention; Figure 2 An overall circuit structure diagram of a control circuit provided by an embodiment of the present invention; Figure 3 A partial circuit structure diagram of a control circuit provided by an embodiment of the present invention; Figure 4 Another partial circuit structure diagram of the control circuit provided by the embodiment of the present invention; Figure 5 Another partial circuit structure diagram of the control circuit provided by the embodiment of the present invention; : Figure symbols: S1, charging control circuit; U4, mainboard control chip; S2, supercapacitor protection circuit; S3, power-on detection circuit; U1, charging control chip; R1, first resistor; R2, second resistor; R3, third resistor; D1, first diode; R14, fourteenth resistor; R15, fifteenth resistor; R16, sixteenth resistor; R17, seventeenth resistor; Q54, fifty-fourth transistor; U3, protection chip; U2, switch chip; C6, sixth capacitor; R12, twelfth resistor; R13, thirteenth resistor; C1, first capacitor; C2, second capacitor; R10, tenth resistor; R11, eleventh resistor; R4, fourth resistor; C5, fifth capacitor; CX, supercapacitor. DETAILED DESCRIPTION

[0009] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0010] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0011] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0012] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0013] The embodiment of the present invention discloses a control method for realizing fast startup based on a super capacitor, which is applied to a control circuit for realizing fast startup based on a super capacitor, such as Figure 2 As shown, the control circuit includes a charging control circuit, a mainboard control chip, a supercapacitor protection circuit and a power-on detection circuit. The detection output end of the power-on detection circuit is connected to the detection pin of the mainboard control chip, the external power supply pin is connected to the voltage sensing end of the charging control circuit, the two power supply input ends of the charging control circuit are respectively connected to the mainboard power supply end and the positive power supply end of the supercapacitor protection circuit, and the supercapacitor protection circuit is connected to the supercapacitor.

[0014] The control method disclosed in this application is a control method based on supercapacitor to achieve fast startup. Figure 1 As shown, the control method includes steps S110 to S150.

[0015] S110, the power-on detection circuit obtains a power-on detection signal and outputs it to the mainboard control chip.

[0016] The power-on detection circuit obtains the power-on detection signal and outputs the obtained power-on detection signal to the mainboard control chip. When the machine is powered off, the high-voltage power supply end (OBD_12V of the power network) is 0V, causing the fifty-fourth transistor Q54 to be cut off, and the voltage of the detection output end (gpio72 pin) is pulled up. When the terminal is powered on, the high-voltage power supply end (OBD_12V of the power network) is restored to 12V input, and the fifty-fourth transistor Q54 is immediately turned on, and the voltage of the detection output end (gpio72 pin) is pulled down. The detection output end can then output the high and low level signals detected as power-on detection signals to the mainboard control chip.

[0017] S120: The mainboard control chip determines whether power is off according to the power-on detection signal.

[0018] The mainboard control chip determines whether the power is off according to the power-on detection signal. If the power-on detection signal is at a high level, it is determined that the external power supply is off; if the power-on detection signal is at a low level, it is determined that the external power supply is not off.

[0019] S130: If the power is off, the mainboard control chip controls the functional components to shut down to enter a low power consumption working mode.

[0020] If the motherboard control chip determines that the power is off, the control function components will be turned off, that is, the display screen, speakers and other components with corresponding functions will be turned off, so that the terminal system will immediately enter the low-power working mode. The average power consumption of the terminal system in the standby low-power working mode is 3mA. At this time, the super capacitor can be discharged to power the motherboard, so that the motherboard will not be completely powered off and shut down for a period of time, that is, the motherboard enters the standby state.

[0021] S140: The charging control circuit determines whether the voltage at the voltage sensing end decreases.

[0022] The charging control circuit determines whether the voltage at the voltage sensing end drops. The voltage sensing end is connected to the external power supply pin, and the external power supply pin is obtained by stepping down the external power supply. If the mainboard control chip determines that the external power supply is powered off, the charging control circuit can also detect the voltage drop at the voltage sensing end.

[0023] If the voltage at the voltage sensing end does not drop, the charging control circuit outputs a high voltage to the positive power supply end to charge the supercapacitor; specifically, at this time, the supercapacitor can be charged through the BUCK circuit inside the charging control chip.

[0024] S150: If the voltage at the voltage sensing end drops, the charging control circuit connects the positive power supply end of the supercapacitor protection circuit to the mainboard power supply end to release the electric energy stored in the supercapacitor to power the mainboard.

[0025] If the voltage at the voltage sensing end drops, the charging control circuit connects the positive power supply end of the supercapacitor protection circuit to the mainboard power supply end, that is, the positive power supply end (corresponding to the positive pole of the supercapacitor) is connected to the mainboard power supply end through the MOSFET inside the charging control chip, thereby powering the mainboard through the supercapacitor.

[0026] The capacity of the supercapacitor used in the specific embodiment of the present application is 20F, the voltage when fully charged is 3.856V, and the mainboard shutdown voltage is 3.4V, so the effective voltage is 0.456V; if the average power consumption of the terminal system is calculated as 3mA (in low power working mode), the 20F supercapacitor can remain powered off for 50 minutes without shutting down, and the terminal system can be powered on within 50 minutes to achieve fast startup.

[0027] The specific calculation process is as follows: 1. Calculate the charge Q first, C= Q / V, C is the capacitance 20F, Q is the charge, and V is the voltage of the supercapacitor when it is fully charged 3.856V. The total charge Q=20F×3.856V=77.12C. Since the minimum working voltage of the motherboard is 3.4V, the effective voltage is 3.856-3.4=0.456V, then the effective charge Q1=20F×0.456V=9.12C. 2. Calculate the effective discharge capacity, the effective capacity is 9.12×1000mA / 3600S≈2.533mAh. 3. Calculate the battery life, the motherboard working standby current is 3mA, then the battery life is 2.533mAh×60 / 3mA=50.6min. After the above calculation, it can be ensured that the motherboard can be quickly turned on and used after powering on again within 50 minutes after power failure.

[0028] In a more specific embodiment, the control method further includes: the charging control circuit configures the capacitor charging and discharging parameters stored in the register according to the input register configuration instruction.

[0029] Before starting the charging control circuit, the capacitor charging and discharging parameters of the registers in the charging control chip of the charging control circuit may also be configured.

[0030] In a more specific embodiment, the charging control circuit configures the capacitor charging and discharging parameters stored in the register according to the input register configuration instruction, including: configuring the charging current parameters in the first register according to the current configuration parameters in the register configuration instruction; configuring the charging voltage threshold in the second register according to the voltage configuration parameters in the register configuration instruction.

[0031] Specifically, the motherboard control chip can send a register configuration instruction to the charging control chip through the register port, and the charging control chip changes the parameters stored in the internal register. If the first register is register REG02, the charging current parameter in the register can be configured through the current configuration parameter in the register configuration instruction. Specifically, the charging current parameter of ICHG [5:0] in register REG02 can be set, and the default value of the charging current parameter is 2A.

[0032] Furthermore, the charging voltage threshold in the second register can be configured through the voltage configuration parameter in the register configuration instruction. The second register is register REG04, and the charging voltage threshold of VGEG [4:0] in register REG04 can be set. The charging voltage threshold can be used to limit the voltage when the supercapacitor is fully charged. The default charging voltage threshold of VGEG [4:0] is 4.208V. Here, it can be modified to 0000 through the voltage configuration parameter, that is, the charging voltage threshold is modified to 3.856V.

[0033] When the device is connected to the power supply again during the standby period (the device is powered on again), the power network OBD_12V is 12V input, the 54th transistor Q54 is immediately turned on, and the voltage of the detection output end (gpio72 pin) is pulled down, and the mainboard control chip determines that the device is reconnected (the device is powered on again), and the device system is immediately awakened. In this way, the device can be turned on immediately within 1 second, and the user can operate it immediately; the standby time is related to the capacity of the supercapacitor, the standby power consumption and the working effective voltage.

[0034] The embodiment of the present invention further discloses a control circuit for realizing fast startup based on a super capacitor, wherein the control circuit applies the control method for realizing fast startup based on a super capacitor as described in the above embodiment, such as Figure 2 As shown, the control circuit includes a charging control circuit S1, a mainboard control chip U4, a supercapacitor protection circuit S2 and a power-on detection circuit S3; the detection output end of the power-on detection circuit S3 is connected to the detection pin of the mainboard control chip U4, the control pin of the mainboard control chip U4 is connected to the control input end of the charging control circuit S1, the two power supply input ends of the charging control circuit S1 are respectively connected to the mainboard power supply end and the positive power supply end of the supercapacitor protection circuit S2, and the supercapacitor protection circuit S2 is connected to the supercapacitor CX.

[0035] Specifically, the clock signal pin of the mainboard control chip U4 is also connected to the clock synchronization end of the charging control circuit S1, so as to output the I2C interface clock signal to the charging control chip U1 in the charging control circuit S1 through the mainboard control chip U4.

[0036] like Figure 3 As shown, the charging control circuit S1 includes a charging control chip U1, a second resistor R2 and a third resistor R3; the fifth pin of the charging control chip U1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to the mainboard control chip U4 as a control input end of the charging control circuit S1; the sixth pin of the charging control chip U1 is connected to one end of the third resistor R3, and the other end of the third resistor R3 is connected to the mainboard control chip U4 as another control input end of the charging control circuit S1; the fifteenth pin of the charging control chip U1 is connected to the sixteenth pin, and the connection point is connected to the mainboard power supply end as a power supply input end; the thirteenth pin of the charging control chip U1 is connected to the fourteenth pin, and the connection point is connected to the positive power supply end of the supercapacitor protection circuit S2 as another power supply input end.

[0037] Furthermore, in order to protect the charging control chip U1, the fourteenth pin of the charging control chip U1 can be connected to one end of the fifth capacitor C5, and the other end of the fifth capacitor C5 is grounded. The fifth pin and the sixth pin of the charging control chip U1 are combined as the clock synchronization end of the charging control circuit S1. Specifically, the fifth pin of the charging control chip U1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to the mainboard control chip U4 as a clock synchronization pin; the sixth pin of the charging control chip U1 is connected to one end of the third resistor R3, and the other end of the third resistor R3 is connected to the mainboard control chip U4 as a serial data signal pin. The eighth pin of the charging control chip U1 is connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is connected to the mainboard power supply end.

[0038] In a more specific embodiment, Figure 5 As shown, the power-on detection circuit S3 includes a first diode D1, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17 and a fifty-fourth transistor Q54; the cathode of the first diode D1 is connected to the high-voltage power supply end (OBD_12V port, voltage 12V), the anode of the first diode D1 is connected to one end of the fourteenth resistor R14, the other end of the fourteenth resistor R14 is connected to one end of the fifteenth resistor R15 and one end of the sixteenth resistor R16, and the other end of the fifteenth resistor R15 is grounded; the other end of the sixteenth resistor R16 is connected to the base of the fifty-fourth transistor Q54, and the emitter of the fifty-fourth transistor Q54 is grounded; the collector of the fifty-fourth transistor Q54 is connected to one end of the seventeenth resistor R17, and the connection point serves as the detection output end of the power-on detection circuit S3, and the other end of the seventeenth resistor R17 is connected to the low-voltage power supply end (VIO18_PMU port, voltage 1.8V).

[0039] The first diode D1 is a voltage-stabilizing diode.

[0040] In a more specific embodiment, Figure 4As shown, the supercapacitor protection circuit S2 includes a protection chip U3, a switch chip U2 and a sixth capacitor C6; the sixth pin of the protection chip U3 is connected to the negative electrode of the supercapacitor CX, one end of the sixth capacitor C6 and the first pin of the switch chip U2; the fifth pin of the protection chip U3 is connected to the other end of the sixth capacitor C6 and the positive electrode of the supercapacitor CX, and the connection point serves as the positive power supply end of the supercapacitor protection circuit S2; the first pin of the protection chip U3 is connected to the sixth pin of the switch chip U2, the second pin of the protection chip U3 is connected to the third pin of the switch chip U2, and the connection point serves as the negative power supply end; the third pin of the protection chip U3 is connected to the fourth pin of the switch chip U2; the fifth pin of the switch chip U2 is connected to the second pin. More specifically, the supercapacitor protection circuit S2 also includes a twelfth resistor R12 and a thirteenth resistor R13; the twelfth resistor R12 is arranged in series between the negative power supply terminal and the second pin of the protection chip U3, and the thirteenth resistor R13 is arranged in series between the fifth pin of the protection chip U3 and the positive electrode of the supercapacitor CX.

[0041] The protection chip U3 is an IC chip used to protect the supercapacitor CX. It adopts a high-voltage CMOS process, has a built-in high-precision voltage detection circuit and a delay circuit, and is used for the protection IC of a single-cell lithium-ion supercapacitor CX device / lithium-ion polymer rechargeable battery. It can detect its overcharge, over-discharge, discharge overcurrent, charge overcurrent and short-circuit state. The twelfth resistor R12 is set for current limiting, the thirteenth resistor R13 is set for current limiting, stabilizing the VDD power supply and strengthening ESD, and the sixth capacitor C6 is set for filtering and stabilizing the VDD power supply. The switch chip U2 is a dual N-MOS tube IC chip, and the switch chip U2 is used for discharge control.

[0042] In a more specific embodiment, Figure 3As shown, the charging control circuit S1 also includes a first resistor R1; the second pin of the charging control chip U1 is connected to one end of the first resistor R1; the first pin of the charging control chip U1 is connected to the twenty-fourth pin and the other end of the first resistor R1, and the connection point is used as the voltage sensing end of the charging control circuit S1. Specifically, the charging control circuit S1 also includes a first capacitor C1, a second capacitor C2, a tenth resistor R10 and an eleventh resistor R11; the eleventh pin of the charging control chip U1 is connected to one end of the tenth resistor R10 and one end of the eleventh resistor R11, and the other end of the eleventh resistor R11 is grounded; the other end of the tenth resistor R10 is connected to the mainboard control chip U4 as a register port; the twenty-second pin of the charging control chip U1 is connected to one end of the second capacitor C2, the twenty-third pin of the charging control chip U1 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is connected to the other end of the second capacitor C2 and grounded.

[0043] The charging control chip U1 is a single-core lithium-ion DC / DC switching charger IC chip, which has functions such as I2C control, USB detection and OTG JEITA compatibility, power path management, etc. The charging control chip U1 is usually used in terminal devices such as smart phones, tablets, power banks and portable Internet devices. The first pin of the charging control chip U1 is connected to the external VDD5V input, and the first pin is used to sense the charging input voltage.

[0044] The present invention discloses a control circuit and a control method for realizing fast startup based on a supercapacitor, and the control method comprises: a mainboard control chip determines whether the power is off according to a power-on detection signal, and if the power is off, the functional component is controlled to be turned off to enter a low-power working mode, and a charging control circuit determines whether the voltage at the voltage sensing end drops, and if it drops, the charging control circuit connects the positive power supply end of the supercapacitor protection circuit to the mainboard power supply end to release the electric energy stored in the supercapacitor to power the mainboard. The above control method charges the supercapacitor when the external power supply is not cut off; when the external power supply is disconnected, the functional component is controlled to be turned off to enter a low-power working mode, and at the same time, the mainboard is powered by releasing the electric energy stored in the supercapacitor to ensure that the mainboard can respond quickly and complete the device startup after power is turned on, which greatly improves the startup speed of the terminal system after the external power supply is disconnected and then reconnected.

[0045] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A control method for realizing fast startup based on supercapacitor, applied to a control circuit for realizing fast startup based on supercapacitor, characterized in that: The control circuit includes a charging control circuit, a mainboard control chip, a supercapacitor protection circuit and a power-on detection circuit. The detection output end of the power-on detection circuit is connected to the detection pin of the mainboard control chip, the external power supply pin is connected to the voltage sensing end of the charging control circuit, the two power supply input ends of the charging control circuit are respectively connected to the mainboard power supply end and the positive power supply end of the supercapacitor protection circuit, the supercapacitor protection circuit is connected to the supercapacitor, and the control method includes: The power-on detection circuit obtains a power-on detection signal and outputs it to the mainboard control chip; The mainboard control chip determines whether power is off according to the power-on detection signal; If the power is off, the mainboard control chip controls the functional components to shut down to enter a low power consumption working mode; The charging control circuit determines whether the voltage at the voltage sensing terminal decreases; If the voltage at the voltage sensing end drops, the charging control circuit connects the positive power supply end of the supercapacitor protection circuit to the mainboard power supply end to release the electric energy stored in the supercapacitor to power the mainboard.

2. The control method for realizing fast startup based on supercapacitor according to claim 1, characterized in that: After the charging control circuit determines whether the voltage at the voltage sensing end decreases, the charging control circuit further includes: If the voltage at the voltage sensing end does not drop, the charging control circuit outputs a high voltage to the positive power supply end of the super capacitor protection circuit to charge the super capacitor.

3. The control method for realizing fast startup based on supercapacitor according to claim 1 or 2, characterized in that: The method further comprises: The charging control circuit configures the capacitor charging and discharging parameters stored in the register according to the input register configuration instruction.

4. The control method for realizing fast startup based on supercapacitor according to claim 3, characterized in that: The charging control circuit configures the capacitor charging and discharging parameters stored in the register according to the input register configuration instruction, including: Configure the charging current parameter in the first register according to the current configuration parameter in the register configuration instruction; The charging voltage threshold in the second register is configured according to the voltage configuration parameter in the register configuration instruction.

5. A control circuit for realizing fast startup based on supercapacitor, characterized in that: The control circuit applies the control method for realizing fast startup based on supercapacitor as described in any one of claims 1 to 4, and the control circuit includes a charging control circuit, a mainboard control chip, a supercapacitor protection circuit and a power-on detection circuit; The detection output end of the power-on detection circuit is connected to the detection pin of the mainboard control chip, the control pin of the mainboard control chip is connected to the control input end of the charging control circuit, and the two power supply input ends of the charging control circuit are respectively connected to the mainboard power supply end and the positive power supply end of the supercapacitor protection circuit, and the supercapacitor protection circuit is connected to the supercapacitor; The charging control circuit includes a charging control chip, a second resistor and a third resistor; The fifth pin of the charging control chip is connected to one end of the second resistor, and the other end of the second resistor is connected to the mainboard control chip as a control input end of the charging control circuit; The sixth pin of the charging control chip is connected to one end of the third resistor, and the other end of the third resistor is connected to the mainboard control chip as another control input end of the charging control circuit; The fifteenth pin and the sixteenth pin of the charging control chip are connected, and the connection point is used as a power supply input terminal to connect the mainboard power supply terminal; The thirteenth pin and the fourteenth pin of the charging control chip are connected, and the connection point is used as another power supply input terminal to connect the positive power supply terminal of the supercapacitor protection circuit.

6. The control circuit for realizing fast startup based on supercapacitor according to claim 5, characterized in that: The power-on detection circuit includes a first diode, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor and a fifty-fourth transistor; The cathode of the first diode is connected to the high-voltage power supply terminal, the anode of the first diode is connected to one end of the fourteenth resistor, the other end of the fourteenth resistor is connected to one end of the fifteenth resistor and one end of the sixteenth resistor, and the other end of the fifteenth resistor is grounded; the other end of the sixteenth resistor is connected to the base of the fifty-fourth transistor, and the emitter of the fifty-fourth transistor is grounded; the collector of the fifty-fourth transistor is connected to one end of the seventeenth resistor, and the connection point serves as the detection output end of the power-on detection circuit, and the other end of the seventeenth resistor is connected to the low-voltage power supply terminal.

7. The control circuit for realizing fast startup based on supercapacitor according to claim 5 or 6, characterized in that: The supercapacitor protection circuit includes a protection chip, a switch chip and a sixth capacitor; The sixth pin of the protection chip is connected to the negative electrode of the supercapacitor, one end of the sixth capacitor and the first pin of the switch chip; the fifth pin of the protection chip is connected to the other end of the sixth capacitor and the positive electrode of the supercapacitor, and the connection point serves as the positive power supply end of the supercapacitor protection circuit; The first pin of the protection chip is connected to the sixth pin of the switch chip, the second pin of the protection chip is connected to the third pin of the switch chip, and the connection point serves as a negative power supply terminal; the third pin of the protection chip is connected to the fourth pin of the switch chip; and the fifth pin of the switch chip is connected to the second pin.

8. The control circuit for realizing fast startup based on supercapacitor according to claim 7, characterized in that: The supercapacitor protection circuit also includes a twelfth resistor and a thirteenth resistor; The twelfth resistor is arranged in series between the negative power supply terminal and the second pin of the protection chip, and the thirteenth resistor is arranged in series between the fifth pin of the protection chip and the positive electrode of the super capacitor.

9. The control circuit for realizing fast startup based on supercapacitor according to claim 5, characterized in that: The charging control circuit also includes a first resistor; The second pin of the charging control chip is connected to one end of the first resistor; the first pin of the charging control chip is connected to the twenty-fourth pin and the other end of the first resistor, and the connection point serves as the voltage sensing end of the charging control circuit.

10. The control circuit for realizing fast startup based on supercapacitor according to claim 5 or 9, characterized in that: The charging control circuit further includes a first capacitor, a second capacitor, a tenth resistor and an eleventh resistor; The eleventh pin of the charging control chip is connected to one end of the tenth resistor and one end of the eleventh resistor, and the other end of the eleventh resistor is grounded; the other end of the tenth resistor is connected to the mainboard control chip as a register port; The twenty-second pin of the charging control chip is connected to one end of the second capacitor, the twenty-third pin of the charging control chip is connected to one end of the first capacitor, and the other end of the first capacitor is connected to the other end of the second capacitor and is grounded.

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