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CN117411303B - Slow-starting circuit for energy storage converter and working method thereof - Google Patents

Slow-starting circuit for energy storage converter and working method thereof Download PDF

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Publication number
CN117411303B
CN117411303B CN202311716935.5A CN202311716935A CN117411303B CN 117411303 B CN117411303 B CN 117411303B CN 202311716935 A CN202311716935 A CN 202311716935A CN 117411303 B CN117411303 B CN 117411303B
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Prior art keywords
slow
energy storage
oring
circuit
optocoupler
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CN117411303A (en
Inventor
傅凯
夏加锐
柯锦
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Shanghai Sige New Energy Technology Co ltd
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Shanghai Sige New Energy Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/327—Means for protecting converters other than automatic disconnection against abnormal temperatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/34—Snubber circuits
    • H02M1/348—Passive dissipative snubbers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention relates to a slow-starting circuit for an energy storage converter and a working method thereof, wherein the slow-starting circuit comprises an optical coupler, an adjustable resistor and an Oring circuit, the adjustable resistor is connected in series with the primary side of the optical coupler, the secondary side of the optical coupler is connected with a first MOS tube of the Oring circuit, and the slow-starting circuit can improve the working reliability of the energy storage converter, save the cost of devices and realize the light weight of the device circuit. According to the working method of the slow-start circuit, the impact current is controlled by detecting the voltage difference of the two sides of the first MOS tube of the Oring circuit and further controlling the on-off of the drive, and heat accumulation of the MOS tube can be reduced by switching on for multiple times, so that devices are effectively protected.

Description

Slow-starting circuit for energy storage converter and working method thereof
Technical Field
The invention relates to the technical field of energy storage conversion equipment, in particular to a slow-start circuit for an energy storage converter and a working method thereof.
Background
The DCDC energy storage converter is a device that converts high-voltage direct current into low-voltage direct current on the battery side by using a power electronic device circuit to charge a battery or converts low-voltage direct current of the battery into high-voltage direct current. In a slow-starting circuit at the battery side of the DCDC energy storage converter, an Oring Mos tube, a current-limiting resistor and a relay are generally connected in parallel to form a slow-starting circuit for battery measurement, the current-limiting resistor and the relay form a pre-charging branch, the relay is firstly turned on during pre-charging, an internal capacitor is charged through the current-limiting resistor, and then the Oring Mos tube is turned on, so that the impact current can be controlled to be smaller. However, the current limiting resistor is usually a cement resistor, so that the volume is large, the relay is easy to fail, and once the pre-charging branch circuit has device damage, the battery cannot discharge, so that the system operation is affected.
Therefore, how to optimize the structure of the slow-start circuit of the energy storage converter so as to save the product space and provide the working reliability of the product is a technical problem aimed at by the application.
Disclosure of Invention
It is therefore an object of the present invention to provide a snubber circuit for an energy storage converter and a method of operating the same, which can improve the operational reliability of the energy storage converter, save the cost of the device, and reduce the weight of the device circuit.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides a slow-starting circuit for an energy storage converter, which comprises an optical coupler, an adjustable resistor and an Oring circuit, wherein the adjustable resistor is connected in series with the primary side of the optical coupler, and the secondary side of the optical coupler is connected with a first MOS tube of the Oring circuit.
According to one embodiment of the invention, a voltage detection unit is arranged in front of and behind the first MOS tube of the Oring circuit, and is used for detecting the front-back voltage difference of the first MOS tube and adjusting the driving current according to the front-back voltage difference of the first MOS tube.
According to one embodiment of the invention, the control input of the energy storage converter is connected to the adjustable resistor via a second MOS transistor.
According to one embodiment of the invention, the control input end of the energy storage converter is connected with the grid electrode of the second MOS tube, the source electrode of the second MOS tube is grounded, the drain electrode of the second MOS tube is connected with one side of the adjustable resistor, and the other side of the adjustable resistor is connected with the optocoupler.
According to one embodiment of the invention, a starting capacitor is connected in parallel on a connecting line of the secondary side of the optocoupler and the first MOS tube.
According to one embodiment of the invention, a second protection resistor is arranged on the secondary side of the optocoupler, the secondary side of the optocoupler is connected with one side of the second protection resistor, the other side of the second protection resistor is connected with the first MOS tube, one side of the starting capacitor is connected with the other side of the second protection resistor, and the other side of the starting capacitor is connected with the first MOS tube.
According to one embodiment of the invention, a third protection resistor is further arranged on the secondary side of the optocoupler, one side of the third protection resistor is connected with the other side of the second protection resistor, and the other side of the third protection resistor is connected with the other side of the starting capacitor.
According to one embodiment of the invention, the energy storage converter comprises an energy storage battery and an output capacitor, wherein the grid electrode of the first MOS tube is connected with the secondary side of the optocoupler, the drain electrode of the first MOS tube is connected with the positive electrode of the energy storage battery, the source electrode of the first MOS tube is connected with one side of the output capacitor, and the other side of the output capacitor is connected with the negative electrode of the energy storage battery.
In particular, the invention provides a working method of a slow-start circuit for an energy storage converter, wherein the slow-start circuit adopts the structure as described above, and the working method comprises the following working steps:
detecting a voltage difference Vds between a source electrode and a drain electrode of a first MOS tube, recording the voltage difference between the source electrode and the drain electrode of the first MOS tube in an unactuated state, and recording the voltage difference as an initial voltage difference Vds_0;
an original side of the optocoupler inputs an order driving instruction, when the real-time voltage difference Vds is detected to be smaller than k times of an initial voltage difference Vds_0, the original side of the optocoupler inputs an order turning-off instruction, and the voltage difference between a source electrode and a drain electrode of the first MOS tube when the order turning-off instruction is input is refreshed and recorded and is recorded as an intermediate voltage difference Vds_0';
after a period of time, inputting an order driving instruction from the primary side of the optocoupler again until the real-time voltage difference Vds is detected to be smaller than k times of the intermediate voltage difference Vds_0', inputting an order turn-off instruction from the primary side of the optocoupler, refreshing again and recording the voltage difference between the source electrode and the drain electrode of the first MOS tube when the order turn-off instruction is input, repeating the steps until the input of the order driving instruction is maintained after a preset slow-off condition is reached, and completing the slow-off of the energy storage converter.
According to one embodiment of the present invention, k has a constant value between 0 and 1.
According to one embodiment of the present invention, the preset slow-start condition is that the voltage difference Vds between the source and the drain of the first MOS transistor is smaller than the set minimum voltage difference vds_min, and after the preset slow-start condition is reached, the Oring driving instruction is sent, and then the Oring shutdown instruction is not sent, so that slow-start is completed.
According to one embodiment of the present invention, the preset slow-start condition is that the number of times of repeatedly inputting the Oring driving instruction and the Oring turn-off instruction from the primary side of the optocoupler exceeds a specified number of times n_max, and after the preset slow-start condition is reached, the Oring driving instruction is sent, and then the Oring turn-off instruction is not sent, so that slow-start is completed.
Compared with the prior art, the slow-start circuit for the energy storage converter and the working method thereof have the advantages that:
the slow-starting circuit is used for an energy storage converter, an optical coupler is used for driving an Oring circuit, the primary side current limiting of the optical coupler is realized by combining and controlling the resistance value of an adjustable resistor on the primary side of the optical coupler, and further the control of the output current on the secondary side of the optical coupler is realized, so that the purpose of increasing the turn-on time of the Oring circuit can be achieved without setting a large starting capacitor when the Oring circuit is started, and the impact current is effectively reduced. That is, the on time of the Oring circuit can be increased by not increasing the start-up capacitance, while reducing the rush current without increasing the Oring off time.
In addition, according to the working method of the slow-start circuit, through detecting the voltage difference of the two sides of the first MOS tube of the Oring circuit, the impact current is controlled in a driving on-off control mode, heat accumulation of the MOS tube can be reduced through multiple switching-on, and devices are effectively protected.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic diagram of a slow-start circuit according to one embodiment of the invention;
fig. 2 is a process flow diagram of a method of operating a slow-start circuit according to another embodiment of the invention.
The reference numerals are as follows:
u1, an optical coupler; r1, an adjustable resistor; r2, a second protection resistor; r3, a third protection resistor; q1, a first MOS tube; q2, a second MOS tube; a Battery, energy storage Battery; co, output capacitance.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Examples
The embodiment describes a slow-start circuit for an energy storage converter, which is used for the energy storage converter, as shown in fig. 1, wherein the slow-start circuit comprises an optocoupler U1, an adjustable resistor R1 and an Oring circuit, the adjustable resistor R1 is connected in series with the primary side of the optocoupler U1, and the secondary side of the optocoupler U1 is connected with a first MOS transistor Q1 of the Oring circuit.
In one embodiment, a voltage detection unit is disposed before and after the first MOS transistor Q1 of the Oring circuit, and is configured to detect a front-to-back voltage difference of the first MOS transistor Q1, and adjust the driving current according to the front-to-back voltage difference of the first MOS transistor Q1. In this embodiment, the voltage of the source and the voltage of the drain of the first MOS transistor Q1 are collected, so as to realize further method control according to the voltage difference Vds between the source and the drain of the first MOS transistor Q1. The impact current is controlled by detecting the voltage difference of the two sides of the first MOS tube Q1 of the Oring circuit and controlling the on-off of the drive, and the heat accumulation of the MOS tube can be reduced by switching on for multiple times, so that the device is effectively protected.
Under one embodiment, the control input end of the energy storage converter is connected with the adjustable resistor R1 through the second MOS transistor Q2, the control input end of the energy storage converter is connected with the gate of the second MOS transistor Q2, the source electrode of the second MOS transistor Q2 is grounded, the drain electrode of the second MOS transistor Q2 is connected with one side of the adjustable resistor R1, and the other side of the adjustable resistor R1 is connected with the optocoupler U1.
In one embodiment, a starting capacitor is connected in parallel to a connection line between the secondary side of the optocoupler U1 and the first MOS transistor Q1. The secondary side of the optocoupler U1 is provided with a second protection resistor R2, the secondary side of the optocoupler U1 is connected with one side of the second protection resistor R2, the other side of the second protection resistor R2 is connected with the first MOS tube Q1, one side of the starting capacitor is connected with the other side of the second protection resistor R2, and the other side of the starting capacitor is connected with the first MOS tube Q1.
In addition, a third protection resistor R3 is further disposed on the secondary side of the optocoupler U1, one side of the third protection resistor R3 is connected to the other side of the second protection resistor R2, and the other side of the third protection resistor R3 is connected to the other side of the starting capacitor.
Under an implementation mode, the energy storage converter comprises an energy storage Battery and an output capacitor Co, the grid electrode of the first MOS tube Q1 is connected with the secondary side of the optocoupler U1, the drain electrode of the first MOS tube Q1 is connected with the positive electrode of the energy storage Battery, the source electrode of the first MOS tube Q1 is connected with one side of the output capacitor Co, and the other side of the output capacitor Co is connected with the negative electrode of the energy storage Battery.
The slow-start circuit is used for an energy storage converter, and is used for driving an Oring circuit by adopting an optocoupler U1, and the primary side current limiting of the optocoupler U1 is realized by combining and controlling the resistance value of an adjustable resistor R1 on the primary side of the optocoupler U1, so that the control of the output current on the secondary side of the optocoupler U1 is realized, and the aim of increasing the turn-on time of the Oring circuit can be achieved without selecting a large capacitance value when the Oring circuit is started, thereby effectively reducing the impact current. That is, the on time of the Oring circuit can be increased by not increasing the start-up capacitance, while reducing the rush current without increasing the Oring off time.
Examples
The embodiment describes a working method of a slow-start circuit for an energy storage converter, wherein the slow-start circuit adopts the structure as described in embodiment 1, and a voltage detection unit is disposed before and after a first MOS transistor Q1 of the Oring circuit, and is configured to detect a front-back voltage difference of the first MOS transistor Q1, and adjust a driving current according to the front-back voltage difference of the first MOS transistor Q1.
The working method of the slow-start circuit for the energy storage converter of the embodiment comprises the following working steps, as shown in fig. 2:
detecting a voltage difference Vds between a source electrode and a drain electrode of the first MOS tube Q1, recording the voltage difference between the source electrode and the drain electrode of the first MOS tube Q1 in an unactuated state, and recording the voltage difference as an initial voltage difference Vds_0;
an original side of the optocoupler U1 inputs an order driving instruction, when the real-time voltage difference Vds is detected to be smaller than k times of an initial voltage difference Vds_0, the original side of the optocoupler U1 inputs an order turning-off instruction, the voltage difference between a source electrode and a drain electrode of the first MOS transistor Q1 when the order turning-off instruction is input is refreshed and recorded, and the voltage difference is recorded as an intermediate voltage difference Vds_0', wherein the value of k is a constant between 0 and 1, sampling delay and turn-off delay can be considered, and k can be a constant between 0.8 and 0.9;
after a period of time, inputting an Oring driving instruction from the primary side of the optocoupler U1 again until the fact that the real-time voltage difference Vds is smaller than k times of the intermediate voltage difference Vds_0' is detected, inputting an Oring turn-off instruction from the primary side of the optocoupler U1, refreshing and recording the voltage difference between the source electrode and the drain electrode of the first MOS tube Q1 when the Oring turn-off instruction is input again, and repeating the steps until the input of the Oring driving instruction is kept after a preset slow-start condition is reached, wherein slow-start of the energy storage converter is completed;
in one embodiment, the preset slow-start condition is that the voltage difference Vds between the source and the drain of the first MOS transistor Q1 is smaller than the set minimum voltage difference vds_min, and after the preset slow-start condition is reached, the order driving instruction is sent, and then the order turn-off instruction is not sent, so that slow-start is completed.
In another embodiment, the preset slow-start condition is that the number of times of repeatedly inputting the Oring driving instruction and the Oring turn-off instruction from the primary side of the optocoupler U1 exceeds a specified number of times n_max, and after the preset slow-start condition is met, the Oring driving instruction is sent, and then the Oring turn-off instruction is not sent any more, so that slow-start is completed.
When the energy storage converter is buffered based on the structure of the buffering circuit described in embodiment 1, the front-back voltages Vbo and Vao of the first MOS transistor Q1 of the Oring circuit are detected in real time, and the real-time voltage difference Vds of Oring can be obtained by subtracting. The Oring driving instruction and the Oring turn-off instruction are generally sent by an external control singlechip, and the initial voltage difference Vds_0 is calculated before the singlechip sends the instruction; then the singlechip sends an order driving instruction to the second MOS tube Q2, when the first MOS tube Q1 of the order circuit reaches the Miller platform, the real-time value of the voltage difference Vds starts to decline, and meanwhile, the current flowing through the first MOS tube Q1 also rises rapidly, and the loss generated in the voltage-current overlapping area is larger. If the first MOS transistor Q1 is turned off by sending an order turn-off command after detecting that the real-time voltage difference Vds is lower than k times (k < 1) of the initial voltage difference vds_0, the continuous rise of the impact current at the first MOS transistor Q1 can be prevented. The voltage difference between the source and the drain of the first MOS transistor Q1 when the order turn-off command is input is refreshed and recorded, and is recorded as an intermediate voltage difference vds_0', after a certain time td (td is determined by the size of the output capacitor Co, in principle, the voltage drop on the output capacitor Co between two orders of order driving is guaranteed to be very small, and td is in millisecond level generally), the singlechip re-outputs the order driving command, and since the output capacitor Co of the energy storage converter is far larger than the order driving capacitor C1, td can be properly lengthened. Meanwhile, since Vds is smaller than before, the impact current is correspondingly reduced, the original side of the optocoupler U1 inputs the order driving instruction again until the real-time voltage difference Vds is detected to be smaller than k times of the intermediate voltage difference vds_0', namely, the original side of the optocoupler U1 inputs the order turn-off instruction, the voltage difference between the source and the drain of the first MOS transistor Q1 when the order turn-off instruction is input is refreshed and recorded again, and the process is repeated until the real-time voltage difference Vds is smaller than the minimum voltage difference vds_min, or the repetition number exceeds the specified number n_max, the order turn-off instruction is not transmitted after the singlechip transmits the order driving instruction at this time, and the slow-down is completed. Through the method, the maximum impact current in the starting process can be reduced, and the heat accumulation of the MOS tube in the energy storage converter can also be reduced.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (11)

1.一种用于储能变换器的缓起电路的工作方法，其特征在于，缓起电路包括光耦、可调节电阻、Oring电路，所述可调节电阻串联于所述光耦的原边侧，所述光耦的副边侧与所述Oring电路的第一MOS管相连，工作方法包括如下工作步骤：1. A working method for a slow-on circuit for an energy storage converter, characterized in that the slow-on circuit includes an optocoupler, an adjustable resistor, and an Oring circuit, and the adjustable resistor is connected in series to the primary side of the optocoupler. side, the secondary side of the optocoupler is connected to the first MOS tube of the Oring circuit, and the working method includes the following working steps: 检测第一MOS管的源极与漏极之间的电压差Vds，并记录未启动状态下所述第一MOS管的源极与漏极之间的电压差，并记为初始电压差值Vds_0；Detect the voltage difference Vds between the source and drain of the first MOS tube, record the voltage difference between the source and drain of the first MOS tube in the non-started state, and record it as the initial voltage difference Vds_0 ; 由光耦的原边侧输入Oring驱动指令，当检测到实时的所述电压差Vds小于初始电压差值Vds_0的k倍后由光耦的原边侧输入Oring关断指令，刷新并记录输入Oring关断指令时的所述第一MOS管的源极与漏极之间的电压差，并记为中间电压差值Vds_0'；The Oring drive command is input from the primary side of the optocoupler. When it is detected that the real-time voltage difference Vds is less than k times the initial voltage difference Vds_0, the Oring shutdown command is input from the primary side of the optocoupler, and the input Oring is refreshed and recorded. The voltage difference between the source and drain of the first MOS transistor during the shutdown command is recorded as the intermediate voltage difference Vds_0'; 在间隔一段时间后，再次由光耦的原边侧输入Oring驱动指令直至检测到实时的所述电压差Vds小于中间电压差值Vds_0'的k倍后即由光耦的原边侧输入Oring关断指令，再次刷新并记录输入Oring关断指令时的所述第一MOS管的源极与漏极之间的电压差，重复这一步骤直至达到预设的缓起条件后保持Oring驱动指令的输入，储能变换器的缓起完成。After a period of time, the Oring drive command is input from the primary side of the optocoupler again until it is detected that the real-time voltage difference Vds is less than k times the intermediate voltage difference Vds_0', and then the Oring switch is input from the primary side of the optocoupler. Turn off the command, refresh and record the voltage difference between the source and drain of the first MOS transistor when the Oring turn off command is input again, repeat this step until the preset slow-on condition is reached and the Oring drive command is maintained. input, the slow start-up of the energy storage converter is completed. 2.根据权利要求1所述的用于储能变换器的缓起电路的工作方法，其特征在于，k的取值为0至1间的常数。2. The working method of the slow-on circuit for an energy storage converter according to claim 1, wherein the value of k is a constant between 0 and 1. 3.根据权利要求2所述的用于储能变换器的缓起电路的工作方法，其特征在于，预设的缓起条件为所述第一MOS管的源极与漏极之间的电压差Vds小于设定的最小电压差Vds_min，达到所述预设的缓起条件后则发送Oring驱动指令后不再发送Oring关断指令，缓起完成。3. The working method of the slow-on circuit for an energy storage converter according to claim 2, wherein the preset slow-on condition is the voltage between the source and drain of the first MOS transistor. The difference Vds is less than the set minimum voltage difference Vds_min. After reaching the preset slow-on condition, the Oring drive command is sent and the Oring shutdown command is no longer sent, and the slow-on is completed. 4.根据权利要求2所述的用于储能变换器的缓起电路的工作方法，其特征在于，预设的缓起条件为重复由光耦的原边侧输入Oring驱动指令和Oring关断指令的次数超过规定的次数n_max，达到所述预设的缓起条件后则发送Oring驱动指令后不再发送Oring关断指令，缓起完成。4. The working method of the slow-on circuit for the energy storage converter according to claim 2, characterized in that the preset slow-on condition is to repeatedly input the Oring drive command from the primary side of the optocoupler and turn off the Oring. If the number of instructions exceeds the specified number n_max, and the preset slow-on condition is reached, the Oring drive command is sent and the Oring shutdown command is no longer sent, and the slow-on is completed. 5.根据权利要求1所述的用于储能变换器的缓起电路的工作方法，其特征在于，所述Oring电路的第一MOS管的前后设置有电压检测单元，用于检测所述第一MOS管的前后电压差，根据所述第一MOS管的前后电压差调整驱动电流。5. The working method of a slow-on circuit for an energy storage converter according to claim 1, characterized in that a voltage detection unit is provided before and after the first MOS transistor of the Oring circuit for detecting the first MOS transistor. The driving current is adjusted according to the voltage difference between the front and rear of a MOS tube. 6.根据权利要求1所述的用于储能变换器的缓起电路的工作方法，其特征在于，储能变换器的控制输入端经第二MOS管再与所述可调节电阻相连。6. The working method of the slow-on circuit for an energy storage converter according to claim 1, characterized in that the control input end of the energy storage converter is connected to the adjustable resistor through a second MOS transistor. 7.根据权利要求6所述的用于储能变换器的缓起电路的工作方法，其特征在于，所述储能变换器的控制输入端与所述第二MOS管的栅极相连，所述第二MOS管的源极接地，所述第二MOS管的漏极与所述可调节电阻的一侧相连，所述可调节电阻的另一侧接入所述光耦。7. The working method of the slow-on circuit for an energy storage converter according to claim 6, characterized in that the control input end of the energy storage converter is connected to the gate of the second MOS tube, so The source of the second MOS tube is grounded, the drain of the second MOS tube is connected to one side of the adjustable resistor, and the other side of the adjustable resistor is connected to the optocoupler. 8.根据权利要求1所述的用于储能变换器的缓起电路的工作方法，其特征在于，所述光耦的副边侧与所述第一MOS管的连接线上并联有启动电容。8. The working method of the slow-on circuit for an energy storage converter according to claim 1, characterized in that a starting capacitor is connected in parallel on the connection line between the secondary side of the optocoupler and the first MOS tube. . 9.根据权利要求8所述的用于储能变换器的缓起电路的工作方法，其特征在于，所述光耦的副边侧设置有第二保护电阻，所述光耦的副边侧与第二保护电阻的一侧相连，所述第二保护电阻的另一侧接入所述第一MOS管，所述启动电容的一侧与所述第二保护电阻的另一侧相连，所述启动电容的另一侧接入所述第一MOS管。9. The working method of the slow-on circuit for an energy storage converter according to claim 8, characterized in that a second protection resistor is provided on the secondary side of the optocoupler, and the secondary side of the optocoupler Connected to one side of the second protection resistor, the other side of the second protection resistor is connected to the first MOS tube, and one side of the starting capacitor is connected to the other side of the second protection resistor, so The other side of the starting capacitor is connected to the first MOS tube. 10.根据权利要求9所述的用于储能变换器的缓起电路的工作方法，其特征在于，在所述光耦的副边侧还设置有第三保护电阻，所述第三保护电阻的一侧与所述第二保护电阻的另一侧相连，所述第三保护电阻的另一侧与所述启动电容的另一侧相连。10. The working method of the slow-on circuit for an energy storage converter according to claim 9, characterized in that a third protection resistor is further provided on the secondary side of the optocoupler, and the third protection resistor One side of the second protection resistor is connected to the other side of the second protection resistor, and the other side of the third protection resistor is connected to the other side of the starting capacitor. 11.根据权利要求9所述的用于储能变换器的缓起电路的工作方法，其特征在于，所述储能变换器包括储能电池与输出电容，所述第一MOS管的栅极与所述光耦的副边侧相连，所述第一MOS管的漏极与所述储能电池的正极相连，所述第一MOS管的源极与所述输出电容的一侧相连，所述输出电容的另一侧与所述储能电池的负极相连。11. The working method of the slow-on circuit for an energy storage converter according to claim 9, characterized in that the energy storage converter includes an energy storage battery and an output capacitor, and the gate of the first MOS tube It is connected to the secondary side of the optocoupler, the drain of the first MOS tube is connected to the positive electrode of the energy storage battery, and the source of the first MOS tube is connected to one side of the output capacitor. The other side of the output capacitor is connected to the negative electrode of the energy storage battery.
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