Isolated pulse power supply system and control method thereof

Abstract

The application provides an isolated pulse power supply system and a control method thereof, comprising a control module, an isolated power supply module, a high-voltage DC power supply module and a high-voltage switch; the isolated power supply module is connected with the high-voltage DC power supply module and an external DC power supply, and is used for isolating the input and output of the power supply system; the high-voltage DC power supply module and the high-voltage switch are both connected with the control module through an optocoupler switch unit; the control module is used for controlling the DC high-voltage source output by the high-voltage DC power supply module and the high-voltage pulse signal output by the high-voltage switch through the optocoupler switch unit. In the application, the control instruction of the control module passes through the optocoupler switch unit, and the DC high-voltage source or the high-voltage pulse signal can be output only when the control instruction reaches the high-voltage DC power supply module or the high-voltage switch; in combination with the isolated power supply module, there is no high-voltage loop in the circuit, and no high-voltage power supply flows through the optocoupler switch unit, so that the selection requirement of the optocoupler switch unit can be reduced, and the cost can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage pulse power supply, in particular to an isolated pulse power supply system and a control method thereof. BACKGROUND

[0002] Generally, in the field of high-voltage pulse power supply, a Marx generator or a voltage chopping circuit in a non-isolated technology is commonly used to generate high-voltage pulses. However, because the non-isolated technology is used, there is a current loop between the input circuit and the output circuit, which may cause electric shock to the human body when the human body accidentally touches the load or the load fails. The high-voltage pulse power supply realized by using the isolated technology has no direct electrical connection between the input circuit and the output circuit and is in a high resistance state, so there is no current loop between the input circuit and the output circuit. Even if the human body accidentally touches the load or the load fails, electric shock to the human body will not occur, which can improve the safety of the product.

[0003] In the voltage boosting scheme of the isolated pulse power supply system, an isolated transformer voltage boosting technology is commonly used. However, when the voltage is high to a certain extent, the voltage passes through an optical coupler. If the optical coupler cannot meet the voltage withstand requirement, the isolation effect cannot be guaranteed. However, the commonly used optical couplers on the market cannot meet the voltage withstand requirement, or only the military-grade optical coupler can meet the high-voltage requirement. However, the military-grade optical coupler is very expensive and difficult to purchase. SUMMARY

[0004] Therefore, the purpose of the present application is to provide an isolated pulse power supply system and a control method thereof, which can reduce the selection requirement of the optical coupler switching unit and save costs under the premise of meeting the isolated voltage boosting.

[0005] In a first aspect, an isolated pulse power supply system is provided, which comprises a control module, an isolated power supply module, an optical coupler switching unit, a high-voltage DC power supply module, and a high-voltage switch. One end of the isolated power supply module is connected with an external DC power supply, and the other end is connected with the high-voltage DC power supply module, for isolating the external DC power supply and the high-voltage DC power supply module. The input end of the high-voltage DC power supply module is connected with the isolated power supply module, and the output end of the high-voltage DC power supply module is connected with the high-voltage switch, for inputting the external DC power supply output from the isolated power supply module, and outputting the external DC power supply raised as a DC high-voltage source to the high-voltage switch. The high-voltage switch is used to convert the DC high-voltage source output by the high-voltage DC power supply module into a high-voltage pulse signal. The high-voltage DC power supply module and the high-voltage switch are both connected with the control module through the optical coupler switching unit. The control module is used to control the DC high-voltage source output by the high-voltage DC power supply module and the high-voltage pulse signal output by the high-voltage switch through the optical coupler switching unit, respectively.

[0006] With reference to the first aspect, in a first possible implementation manner of the first aspect, the opto-coupler switch unit comprises a first opto-coupler switch and a second opto-coupler switch connected with the high-voltage direct-current power supply module; the control module is configured to send a control signal to the high-voltage direct-current power supply module through the first opto-coupler switch, so as to control the high-voltage direct-current power supply module to output the direct-current high-voltage source; and the high-voltage direct-current power supply module is configured to send a first feedback signal to the control module through the second opto-coupler switch, so that the control module adjusts the control signal according to the first feedback signal.

[0007] With reference to the first aspect, in a second possible implementation manner of the first aspect, the opto-coupler switch unit further comprises a third opto-coupler switch and a fourth opto-coupler switch connected with the high-voltage switch; the control module is further configured to send a control signal to the high-voltage switch through the third opto-coupler switch, so as to control the high-voltage switch to output the high-voltage pulse signal, when the direct-current high-voltage source output by the high-voltage direct-current power supply module is transmitted to the high-voltage switch; and the high-voltage switch is further configured to send a second feedback signal to the control module through the fourth opto-coupler switch.

[0008] With reference to the first aspect, in a third possible implementation manner of the first aspect, the control module comprises a master control chip, and the master control chip is provided with a switch interface; the first opto-coupler switch, the second opto-coupler switch, the third opto-coupler switch and the fourth opto-coupler switch are connected to the master control chip through the switch interface respectively.

[0009] With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the isolation power supply module comprises an isolation chip and an isolation module configured by the isolation chip; the isolation chip comprises an input end and an output end; the input end is connected with the external direct-current power supply; the output end is connected with the high-voltage direct-current power supply module; and the isolation module is configured to isolate the input end and the output end of the isolation chip.

[0010] With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the high-voltage direct-current power supply module comprises a first processing chip, and a boost module and an output circuit configured by the first processing chip; the first processing chip communicates with the control module; the boost module is configured to perform boost processing on the external direct-current power supply input from the isolation power supply module, to obtain the direct-current high-voltage source; and the output circuit is configured to output the direct-current high-voltage source to the high-voltage switch.

[0011] With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the high-voltage switch comprises a second processing chip, and a pulse processing circuit configured by the second processing chip; the second processing chip communicates with the control module; and the pulse processing circuit is configured to process the direct-current high-voltage source, to generate the high-voltage pulse signal.

[0012] With reference to the first aspect, the embodiment of the present application provides a seventh possible implementation manner of the first aspect, wherein the first processing chip is further configured with a monitoring circuit connected with the external load circuit, and the monitoring circuit is used for monitoring current data of the external load circuit; and the first processing chip is further used for generating a first feedback signal according to the current data, and feeding back the first feedback signal to the control module, so that the control module adjusts the control signal according to the first feedback signal.

[0013] With reference to the first aspect, the embodiment of the present application provides an eighth possible implementation manner of the first aspect, wherein the first processing chip is further used for responding to the control signal sent by the control module, and calculating a boost value corresponding to the direct-current high-voltage source according to the control signal; the boost module is used for performing real-time boost on the external direct-current power input from the isolation power module according to the boost value; and the control signal is determined through the following steps: the control module acquires the first feedback signal sent by the first processing chip, and judges whether the first feedback signal is less than a preset threshold value; if yes, the number of times that the first feedback signal is less than the preset threshold value is acquired; when the first feedback signal is less than the preset threshold value, the boost level is determined according to the number of times, and the boost level is determined as the control signal.

[0014] In the second aspect, the embodiment of the present application further provides a control method of the isolation type pulse power supply system, which comprises: isolating an external direct-current power and a high-voltage direct-current power module through an isolation power module; and controlling a direct-current high-voltage source output by the high-voltage direct-current power module and a high-voltage pulse signal output by a high-voltage switch through an optical coupling switch unit; wherein the input end of the high-voltage direct-current power module is connected with the isolation power module, the output end of the high-voltage direct-current power module is connected with the high-voltage switch; and the high-voltage direct-current power module and the high-voltage switch are both connected with the control module through the optical coupling switch unit.

[0015] The embodiment of the present application has the following beneficial effects: the isolation type pulse power supply system and the control method thereof provided by the present application comprise the isolation power module, which can isolate the input external direct-current power data, in addition, the power supply system further comprises the optical coupling switch unit, the control instruction of the control module generates the control signal through the optical coupling switch unit, when the control signal reaches the high-voltage direct-current power module or the high-voltage switch, the high-voltage direct-current power module or the high-voltage switch can output the corresponding data, in the power supply system, only the control signal exists between the control module and the high-voltage direct-current power module or the high-voltage switch, no high-voltage power flows, and when the high-voltage direct-current power module or the high-voltage switch does not receive the control signal, the high-voltage power cannot be transported, and no high-voltage loop exists in the circuit, which ensures the circuit safety of the power supply system. Since the optical coupling switch unit is only used for transmitting the control signal, no high-voltage power flows through the optical coupling switch unit, and the corresponding high-voltage power data is calculated and output by the high-voltage direct-current power module, therefore, the embodiment of the present application can reduce the selection requirement of the optical coupling switch unit under the premise of meeting the isolation boost, and saves the cost.

[0016] Other features and advantages of the present application will be set forth in the descriptions that follow, and in part will be apparent from the description, or can be learned by practice of the application. The purposes and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0017] To make the above objectives, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are referred to for a detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0019] Figure 1 A structure schematic diagram of an isolated pulse power supply system provided by an embodiment of the present application is shown in the figure.

[0020] Figure 2 A structure schematic diagram of another isolated pulse power supply system provided by an embodiment of the present application is shown in the figure.

[0021] Figure 3 A circuit schematic diagram of an isolated power supply module provided by an embodiment of the present application is shown in the figure.

[0022] Figure 4 A structure schematic diagram of a corresponding monitoring module corresponding to a high-voltage DC power supply module provided by an embodiment of the present application is shown in the figure.

[0023] Figure 5 A structure schematic diagram of a corresponding first processing chip corresponding to a high-voltage DC power supply module provided by an embodiment of the present application is shown in the figure.

[0024] Figure 6 A structure schematic diagram of a second processing chip of a high-voltage switch provided by an embodiment of the present application is shown in the figure.

[0025] Figure 7 A circuit diagram corresponding to a high-voltage switch when a DC high-voltage source is inputted into the high-voltage switch provided by an embodiment of the present application is shown in the figure.

[0026] Figure 8 A circuit diagram corresponding to a high-voltage switch when a second feedback signal is outputted by the high-voltage switch provided by an embodiment of the present application is shown in the figure.

[0027] Figure 9 A circuit schematic diagram of a pulse processing circuit of a high-voltage switch provided by an embodiment of the present application is shown in the figure.

[0028] Figure 10 A flow chart of a control method of an isolated pulse power supply system provided by the embodiment of the present application is shown in the figure.

[0029] Figure 11 A structural schematic diagram of an electronic device provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiment is a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0031] Generally, in the field of high-voltage pulse power supply, a Marx generator or a voltage chopping circuit in non-isolation technology is commonly used to generate high-voltage pulse. However, because the non-isolation technology is used, there is a current loop between the input circuit and the output circuit, which may cause electric shock of human body when the human body accidentally touches the load or the load fails. The high-voltage pulse power supply realized by using the isolation technology has no direct electrical connection between the input circuit and the output circuit and is in a high resistance state, so there is no current loop between the input circuit and the output circuit. Even if the human body accidentally touches the load or the load fails, electric shock of the human body will not occur, which can improve the safety of the product.

[0032] However, in the isolation boosting scheme, the isolation transformer boosting technology is commonly used. However, when the voltage is high to a certain extent, the voltage passes through the optocoupler. If the optocoupler cannot meet the voltage withstand requirement, the isolation effect cannot be guaranteed. However, the commonly used optocouplers on the market cannot meet the voltage withstand requirement, or only the optocoupler reaching the military level can meet the high-voltage requirement. However, the military optocoupler is very expensive and difficult to purchase.

[0033] Based on this, the isolated pulse power supply system and the control method thereof provided by the embodiment of the present application can reduce the selection requirement of the optocoupler switching unit and save the cost under the premise of meeting the isolation boosting.

[0034] In order to facilitate the understanding of the embodiment, first, a kind of isolated pulse power supply system disclosed by the embodiment of the present application is introduced in detail, Figure 1 A structural schematic diagram of an isolated pulse power supply system is shown in the figure, specifically, a structural schematic diagram of an isolated pulse power supply system is shown in the figure, the system comprises: control module 100, isolated power supply module 101, optocoupler switching unit 102, high-voltage DC power supply module 103, and high-voltage switch 104 connected with high-voltage DC power supply module 103. Figure 1 ​

[0035] One end of the isolation power module 101 is connected with the external DC power supply, and the other end is connected with the high-voltage DC power module 103; the input end of the high-voltage DC power module 103 is connected with the output end of the isolation power module 101, and the output end of the high-voltage DC power module 103 is connected with the input end of the high-voltage switch 104.

[0036] In addition, the high-voltage DC power module 103 and the high-voltage switch 104 are connected with the control module 100 through the optocoupler switch unit 102; the isolation power module 101 is used to isolate the external DC power supply and the high-voltage DC power module 103; the control module 100 is used to control the DC high-voltage source output by the high-voltage DC power module 103 and the high-voltage pulse signal output by the high-voltage switch 104 through the optocoupler switch unit 102.

[0037] In the specific implementation, the external DC power supply is connected to the system, at this time, the external DC power supply is connected with the isolation power module 101, and the isolation power module 101 can isolate the external DC power supply. The isolation power module 101 can also supply power to the high-voltage DC power module 103 according to the power supply data of the external DC power supply. At this time, the control module 100 needs to generate a control instruction, and the control instruction generates a control signal through the isolation of the optocoupler switch unit 102, and the control signal acts on the high-voltage DC power module 103, so that the high-voltage DC power module 103 can output the DC high-voltage source data corresponding to the external DC power supply.

[0038] Further, when the high-voltage DC power module 103 obtains the DC high-voltage source data, the DC high-voltage source data can be output to the high-voltage switch 104, so that the high-voltage switch 104 outputs the corresponding high-voltage pulse signal. At this time, the control module 100 needs to generate a corresponding output control instruction, and the output control instruction generates an output control signal through the isolation of the optocoupler switch unit 102, until the output control signal acts on the high-voltage switch 104, the high-voltage switch 104 can obtain the DC high-voltage source data, and inversely convert the DC high-voltage source data into the corresponding pulse AC signal according to the DC high-voltage source data, wherein the amplitude of the pulse AC signal depends on how many volts of voltage the DC high-voltage source corresponds to. Specifically, the control module 100 can be a microcontroller unit (MCU).

[0039] This invention provides an isolated pulse power supply system, including an isolated power supply module capable of isolating input external DC power data. The power supply system also includes an optocoupler switch unit. Control commands from the control module are generated into control signals by the optocoupler switch unit. When the control signal reaches the high-voltage DC power supply module or high-voltage switch, the high-voltage DC power supply module or high-voltage switch can output corresponding data. In this power supply system, only control signals exist between the control module and the high-voltage DC power supply module or high-voltage switch; no high-voltage power flows through it. Furthermore, if the high-voltage DC power supply module or high-voltage switch does not receive a control signal, high-voltage power cannot be transmitted. There is no high-voltage loop in the circuit, ensuring the circuit safety of the power supply system. Since the optocoupler switch unit is only used to transmit control signals, and no high-voltage power flows through it, the corresponding high-voltage power data is calculated and output by the high-voltage DC power supply module. Therefore, this invention can reduce the selection requirements of the optocoupler switch unit while meeting the isolation boost requirement, thus saving costs.

[0040] For ease of understanding, Figure 1 Based on this, embodiments of the present invention also provide another isolated pulse power supply system. Figure 2 A schematic diagram of another isolated pulse power supply system is shown, such as... Figure 2 As shown, in this system, the optocoupler switch unit 102 includes a first optocoupler switch 1021 and a second optocoupler switch 1022 connected to the high-voltage DC power supply module 103; wherein, the control module 100 sends a control signal to the high-voltage DC power supply module 103 through the first optocoupler switch 1021 to control the high-voltage DC power supply module 103 to output a high-voltage DC source; and the high-voltage DC power supply module 103 sends a first feedback signal to the control module through the second optocoupler switch 1022 so that the control module 100 adjusts the control signal according to the first feedback signal.

[0041] Furthermore, the aforementioned optocoupler switch unit 102 also includes a third optocoupler switch 1023 and a fourth optocoupler switch 1024 connected to the high-voltage switch 104. When the DC high-voltage source output by the high-voltage DC power supply module 103 is supplied to the high-voltage switch 104, the aforementioned control module 100 sends a control signal to the high-voltage switch 104 through the third optocoupler switch 1023 to control the high-voltage switch 104 to output a high-voltage pulse signal; and the high-voltage switch 104 is used to send a second feedback signal to the control module 100 through the fourth optocoupler switch 1024, so that the control module 100 adjusts the control signal according to the second feedback signal.

[0042] Specifically, the isolated pulse power supply system provided by this invention can be connected to an external load circuit. In this case, both the high-voltage DC power supply module and the high-voltage switch need to provide feedback signals to the control module through the optocoupler switch unit.

[0043] In the specific implementation, the control module sends a control instruction, which generates a control signal through the optical coupling switch unit 102, and the high-voltage DC power supply module 103 can output the DC high-voltage source to the high-voltage switch only after receiving the control signal corresponding to the control module. After that, the high-voltage switch can output a high-voltage pulse signal only after receiving the control signal from the control module. At this time, the high-voltage pulse signal acts on the external load circuit.

[0044] Further, when the high-voltage pulse signal acts on the external load circuit, the high-voltage switch provides a second feedback signal to the control module through the fourth optical coupling switch, which includes the operating signals of the electronic components in the high-voltage switch. If there is an over-temperature, over-current, or over-voltage situation, the control module controls the high-voltage switch to be turned off. At this time, the high-voltage DC power supply module 103 can obtain the monitoring information corresponding to the external load circuit, such as the current data information of the external load. At this time, the high-voltage DC power supply module 103 can obtain a corresponding first feedback signal according to the monitoring information and send the first feedback signal to the control module. The first feedback signal includes the current data corresponding to the external load circuit to form a closed-loop control. The control module 100 can receive the first feedback signal after the first feedback signal is isolated by the second optical coupling switch 1022.

[0045] Specifically, the control module 100 can also send a control signal to the high-voltage switch 104 through the third optical coupling switch 1023 to control the high-voltage switch 104 to output a high-voltage pulse signal. When the high-voltage DC power supply module 103 delivers the obtained DC high-voltage source to the high-voltage switch 104, the control module needs to send a control instruction to the high-voltage switch 104, and the control instruction generates a control signal after passing through the third optical coupling switch 1023. The high-voltage switch 104 can output a corresponding high-voltage pulse signal according to the DC high-voltage source only after receiving the control signal. The high-voltage pulse signal is an alternating pulse signal converted from the DC high-voltage source. Further, the high-voltage switch 104 can also be connected to the external load circuit. When the high-voltage pulse signal of the high-voltage switch 104 acts on the external load circuit, the high-voltage switch 104 feeds back a second feedback signal corresponding to the external load circuit to the control module. At this time, the second feedback signal reaches the control module 100 after passing through the fourth optical coupling switch 1024 to complete the signal feedback.

[0046] Specifically, the control module 100 includes a main control chip, and the main control chip is provided with a switch interface; the first optocoupler switch 1021, the second optocoupler switch 1022, the third optocoupler switch 1023 and the fourth optocoupler switch 1024 are connected to the main control chip through the switch interface respectively. Specifically, the control module can be realized by an embedded platform, such as an STM32 kernel single-chip microcomputer or a DSP (Digital Signal Processing) chip, or by an FBGA platform, and the control module is responsible for the state self-checking and automatic control and management of the entire power supply system.

[0047] Further, the external DC power supply can include a battery power supply, such as a lithium battery, a lead-acid battery and the like, or can also be an ACDC switching power supply or the like.

[0048] The isolation power supply module adopts an isolation transformer technology, which can not only realize the isolation of the input voltage and the output voltage, but also is connected with the high-voltage DC power supply module 103, and thus is responsible for supplying power to the high-voltage DC power supply module 103. Specifically, the isolation power supply module includes an isolation chip and an isolation module configured to the isolation chip; the isolation chip includes an input end and an output end; the input end is connected with the external DC power supply; the output end is connected with the high-voltage DC power supply module; and the isolation module is used to isolate the input end and the output end of the isolation chip.

[0049] In order to facilitate understanding, Figure 3 a circuit schematic diagram of the isolation power supply module is shown, Figure 3 wherein M1 is the isolation chip of the isolation power supply module, VBAT is the input end pin connected with the external DC power supply, and +12V is the output end pin connected with the high-voltage DC power supply module to output voltage to the high-voltage DC power supply module.

[0050] Specifically, the high-voltage DC power supply module includes a first processing chip, a boost module and an output circuit configured to the first processing chip; the first processing chip communicates with the control module to receive the control signal corresponding to the control module; the boost module is used to boost the DC high-voltage source output from the isolation power supply module according to the control signal to obtain a boosted DC high-voltage source; and the output circuit is used to output the DC high-voltage source to the high-voltage switch. The boost module includes boost logic corresponding to the DC high-voltage source data. Specifically, the boost module included in the high-voltage DC power supply module 103 is realized by using a boost technology, such as BOOST boost or non-isolation transformer boost, and can convert the low voltage provided by the isolation power supply module into a target high voltage according to the control signal of the control module. The boost module can be a transformer device corresponding to the boost technology.

[0051] The high-voltage switch comprises a second processing chip, and a pulse processing circuit configured by the second processing chip; the second control chip is in communication with the control module; and the pulse processing circuit is used for processing the direct-current high-voltage source to generate a high-voltage pulse signal for powering an external load circuit.

[0052] Another isolated pulse power supply system provided by the embodiment of the application comprises a first optocoupler switch and a second optocoupler switch corresponding to a high-voltage direct-current power supply module, and a third optocoupler switch and a fourth optocoupler switch corresponding to a high-voltage switch. When the control module sends a control signal to the high-voltage direct-current power supply module or the high-voltage switch, the control signal is transmitted through the corresponding optocoupler switch unit. In addition, when the high-voltage direct-current power supply module and the high-voltage switch provide a first feedback signal to the control module, the first feedback signal also needs to pass through the corresponding optocoupler switch unit. This design makes the input and feedback of the high-voltage power supply isolated.

[0053] Further, since the high-voltage pulse signal of the high-voltage switch is determined according to the specific data of the direct-current high-voltage source, in the embodiment of the application, the high-voltage switch provides the high-voltage pulse signal corresponding to the direct-current high-voltage source for the external load circuit, and the high-voltage direct-current power supply module monitors the current data of the external load circuit when the high-voltage pulse signal acts on the external load circuit.

[0054] Specifically, the first processing chip is further configured with a monitoring module connected with the external load circuit, which is used for monitoring the current data of the external load circuit; and the first processing chip is further used for generating a first feedback signal according to the current data and feeding back the first feedback signal to the control module.

[0055] Further, since the current data in the external load circuit corresponds to the high-voltage pulse signal of the high-voltage switch, any position of the isolated pulse power supply system provided by the embodiment of the application can monitor the current data of the external load circuit, that is, the monitoring module can also be configured at the lower end of the high-voltage switch for current monitoring.

[0056] In the specific implementation, when the pulse power supply system of the embodiment of the application is connected with the external load circuit, the energy corresponding to the external load circuit can be lost. At this time, the high-voltage direct-current power supply module can monitor the current data of the external load circuit through the monitoring module, then the first processing chip generates feedback information according to the current data and feeds back the corresponding first feedback signal to the control module, wherein the first feedback signal comprises the monitored current data.

[0057] Further, the control module is further configured to acquire the first feedback signal sent by the first processing chip, and determine whether the first feedback signal is less than a preset threshold; if yes, acquire a number of times that the first feedback signal is less than the preset threshold; and when the first feedback signal is less than the preset threshold, determine a boost level according to the number of times, and determine the boost level as the control signal.

[0058] Specifically, after the control module acquires the first feedback signal, it is determined whether the energy of the external load circuit is lost, and if the energy of the external load circuit is lost, the output direct current high voltage source needs to be boosted in the embodiment of the application, so that the external load circuit can still work normally after receiving the corresponding high voltage pulse signal.

[0059] In a specific implementation, after the control module acquires the first feedback signal fed back by the high voltage direct current power supply module, the first feedback signal includes current data of the external load circuit, at this time, the control module determines whether the first feedback signal is less than a preset threshold; the preset threshold can be 5 mA, and if the current data of the external load circuit corresponding to the first feedback signal is less than the preset threshold, it indicates that the direct current high voltage source needs to be boosted.

[0060] Further, the control module also stores a number of times that the first feedback signal is less than the preset threshold, that is, the number of times corresponding to the boost value calculated for the current external load circuit, therefore, when the control module determines that the current data in the first feedback signal is less than the preset threshold, it also acquires the number of times, and obtains a corresponding boost level according to the number of times, at this time, the control module sends a boost instruction corresponding to the boost level to the high voltage direct current power supply module, so that the high voltage direct current power supply module determines the boost value corresponding to the direct current voltage source according to a preset boost logic. When the stored number of times is 1, the boost level is 2, and the control instruction sent by the control module includes information corresponding to the 2-level boost level.

[0061] Specifically, the first processing chip is also configured to respond to the control signal sent by the control module; so that the boost module calculates the boost value corresponding to the direct current high voltage source according to the control signal; and the boost module further boosts the voltage output from the isolation power supply module in real time according to the boost value, and updates the direct current high voltage source.

[0062] Specifically, since the control instruction sent by the control module includes information corresponding to the boost level, the high voltage direct current power supply module boosts the direct current high voltage source according to the boost level. The boost value can be 200 V. Specifically, each boost level indicates a multiple of the boost value, for example, if the stored number of times is 0, the boost level is 1, and the boost value is 200 V. The boost value corresponding to the 2-level boost is 400 V.

[0063] For the convenience of understanding, Figure 4 The structure diagram of the corresponding monitoring module of the high-voltage direct-current power supply module is shown, wherein, Figure 4 Q6 in the figure represents the second optocoupler switch, and the PWM_IMON pin position is used for connection with the control module; U1 represents the monitoring module, and the +12V pin of U1 is used for connection with the external load circuit, so that the monitoring module obtains the current data of the external load circuit; the IMON pin is used for connection with the first processing chip, and after the monitoring module is connected with the first processing chip, the current data obtained by the monitoring module is fed back to the control module by the first processing chip through the second optocoupler switch Q6. Wherein, Figure 4 The device, such as the capacitor C67 and the capacitor C60, and the resistor R15, the resistor R16 and the resistor R13, is also included in the figure.

[0064] Further, Figure 5 The structure diagram of the corresponding first processing chip of the high-voltage direct-current power supply module is shown, wherein Q1 represents the first optocoupler switch, the POWER_ADJ position is used for connection with the control module, and U9 represents the first processing chip of the high-voltage direct-current power supply module; J5 is a connecting device for connecting the boost module, and the boost module, the control module and the first optocoupler switch can be connected and communicated through the device. Further, Figure 5 The IMON pin is also included in the figure, which is connected with the IMON pin in the figure. Figure 4 So that the monitoring module is connected with the boost module and the first processing chip at J5. Wherein, Figure 5 The ISO_+5V pin is also included in the J5 position, which can be connected with the high-voltage switch; the +12V position of U9 is used for connection with the isolation power supply module. Further, Figure 5 A plurality of external devices, such as the capacitor C22, the capacitor C23, the capacitor C24, and the resistor R10 and the resistor R11, are also included in the figure.

[0065] Figure 6 The structure diagram of the second processing chip of the high-voltage switch is shown, and the Figure 6 In the figure, USB3 is the second processing chip corresponding to the high-voltage switch, wherein the ISO_+5V position is used for connection with the high-voltage direct-current power supply module, PLUSE-SW3 is the input interface corresponding to the second processing chip, and PLUSE-CT3 is the output interface corresponding to the second processing chip. Further, Figure 7 The corresponding circuit diagram when the direct-current high-voltage source inputs the high-voltage switch is shown, and the Figure 7 In the figure, Q11 represents the third optocoupler switch, that is, Figure 7It can also be understood as the circuit diagram corresponding to the third optocoupler switch; wherein, the PLUSE_SW3 pin is used for connecting with the control module, and the PLUSE_SW3 pin is used for connecting with the second processing chip. Figure 7 In the embodiment, a plurality of external devices such as the resistor R62, the resistor R64 and the capacitor C88 are further included.

[0066] Further, Figure 8 The corresponding circuit diagram when the high-voltage switch outputs the second feedback signal is shown. Figure 8 In the embodiment, Q10 represents the fourth optocoupler switch, that is, Figure 8 It can also be understood as the circuit diagram corresponding to the fourth optocoupler switch; the PLUSE_CT3 pin is used for connecting with the control module, and the PLUSE_CT3 pin is used for connecting with the second processing chip. Figure 8 In the embodiment, a plurality of external devices such as the resistor R61 and the capacitor C87 are further included.

[0067] Further, Figure 9 The corresponding circuit diagram of the pulse processing circuit of the high-voltage switch is shown, wherein, J1 is a connecting device corresponding to the pulse processing circuit, a direct-current high-voltage source is input from the HV+ pin, and a generated high-voltage pulse signal is output from the HV-OUT pin; further, the embodiment further includes a plurality of devices such as the energy storage capacitor C3, the input diode D9, the output diode D11, the discharge electrode RL and the current-limiting resistor R1. Figure 9

[0068] In the above-mentioned boosting method, the control module judges according to the obtained feedback signal and processes to generate a corresponding boosting signal, that is, the above-mentioned boosting level, so that the high-voltage direct-current power supply module boosts the direct-current voltage source according to the boosting level, and then directly transmits the boosted direct-current voltage source to an external load circuit according to the control signal of the control module, and there is no high-voltage power supply signal in the circuit, thereby ensuring the safety of the power supply system. The power supply system realized by the above-mentioned boosting method and control logic can still realize isolation when a higher voltage data is boosted, and is also applicable in the fields of medical treatment, industry, aerospace and national defense, especially in the field of medical treatment. If part of the application appears to be electrically leaked or damaged, the patient can be prevented from being electrically shocked, thereby avoiding an electric leakage accident.

[0069] In summary, the embodiment of the present application solves the problem that there is no isolated pulse power supply in the market or the isolated pulse power supply must be realized by using a military-grade high-voltage optocoupler, so that the high-voltage isolated pulse power supply technology is popularized in more and more industries in the range of ensuring safety and cost control.

[0070] Corresponding to the above-mentioned system embodiment, the embodiment of the present application further provides a control method of an isolated pulse power supply system, Figure 10 ​A flow chart of a control method of an isolated pulse power supply system is shown in FIG. Figure 10 The method comprises the following steps:

[0071] In step S402, an external DC power supply and a high-voltage DC power supply module are isolated by an isolated power supply module.

[0072] In step S404, a DC high-voltage source output by the high-voltage DC power supply module and a high-voltage pulse signal output by a high-voltage switch are controlled by an optical coupling switch unit.

[0073] The control method of the isolated pulse power supply system provided by the embodiment of the present application has the same technical features as the isolated pulse power supply system provided by the above embodiment, and can solve the same technical problems and achieve the same technical effects.

[0074] The embodiment of the present application further provides an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the steps of the method. Figure 10 The embodiment of the present application further provides an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the steps of the method.

[0075] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to execute the steps of the method. Figure 10 The embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to execute the steps of the method.

[0076] The embodiment of the present application further provides a structural schematic diagram of an electronic device, as shown in FIG. Figure 11 The electronic device includes a processor 111 and a memory 110, and the memory 110 stores computer executable instructions executable by the processor 111, and the processor 111 executes the computer executable instructions to implement the method. Figure 10 The embodiment of the present application further provides a structural schematic diagram of an electronic device, as shown in FIG. Figure 11 In the shown embodiment, the electronic device further includes a bus 112 and a communication interface 113, and the processor 111, the communication interface 113 and the memory 110 are connected through the bus 112.

[0077] The memory 110 can include a high-speed random access memory (RAM) and can also include a non-volatile memory such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 113 (which can be wired or wireless), and the Internet, a wide area network, a local area network, a metropolitan area network, etc. can be used. The bus 112 can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc., and can also be an AMBA (Advanced Microcontroller Bus Architecture) bus, in which AMBA defines three types of buses, including an APB (Advanced Peripheral Bus) bus, an AHB (Advanced High-performance Bus) bus, and an AXI (Advanced eXtensible Interface) bus. The bus 112 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 11 Only one bidirectional arrow is used to represent the bus in the figure, but it does not mean that there is only one bus or only one type of bus.

[0078] The processor 111 can be an integrated circuit chip having a processing capability of signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware in the processor 111 or the instruction in the form of software. The processor 111 described above can be a general processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, or other mature storage medium in the art. The storage medium is located in the storage memory, and the processor 111 reads the information in the storage memory, and combines the hardware to complete the above-mentioned Figure 10 The method shown.

[0079] The computer program product of the isolation type pulse power supply system and the control method thereof provided by the embodiment of the present application includes a computer readable storage medium storing program codes, the instructions included in the program codes can be used to execute the method described in the foregoing method embodiment, and the specific implementation can be referred to the method embodiment, which will not be described here. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the method described above can refer to the corresponding process in the foregoing system embodiment, which will not be described here.

[0080] In addition, in the description of the embodiment of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, can be fixedly connected, 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 intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0081] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the present application that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0082] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0083] Finally, it should be noted that the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacements to some of the technical features; and these modifications, changes or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An isolated pulsed power supply system, characterized by, The system comprises a control module, an isolation power module, an optocoupler switch unit, a high-voltage direct-current power module and a high-voltage switch; One end of the isolation power module is connected with an external direct-current power supply, and the other end is connected with the high-voltage direct-current power module, for isolating the external direct-current power supply and the high-voltage direct-current power module; The input end of the high-voltage direct-current power module is connected with the isolation power module, and the output end of the high-voltage direct-current power module is connected with the high-voltage switch, for inputting the external direct-current power output from the isolation power module, and outputting the external direct-current power to the high-voltage switch after the external direct-current power is raised as a direct-current high-voltage source; The high-voltage switch is used for converting the direct-current high-voltage source output by the high-voltage direct-current power module into a high-voltage pulse signal; The high-voltage direct-current power module and the high-voltage switch are both connected with the control module through the optocoupler switch unit; The control module is used for controlling the direct-current high-voltage source output by the high-voltage direct-current power module and the high-voltage pulse signal output by the high-voltage switch through the optocoupler switch unit respectively; The optocoupler switch unit comprises a first optocoupler switch and a second optocoupler switch connected with the high-voltage direct-current power module; The control module is used for sending a control signal to the high-voltage direct-current power module through the first optocoupler switch, so as to control the high-voltage direct-current power module to output the direct-current high-voltage source; The high-voltage direct-current power module is used for sending a first feedback signal to the control module through the second optocoupler switch, so that the control module adjusts the control signal according to the first feedback signal; The optocoupler switch unit further comprises a third optocoupler switch and a fourth optocoupler switch connected with the high-voltage switch; The control module is further used for sending a control signal to the high-voltage switch through the third optocoupler switch when the direct-current high-voltage source output by the high-voltage direct-current power module is delivered to the high-voltage switch, so as to control the high-voltage switch to output a high-voltage pulse signal; The high-voltage switch is further used for sending a second feedback signal to the control module through the fourth optocoupler switch.

2. The system of claim 1, wherein, The control module comprises a master control chip, and the master control chip is provided with a switch interface; The first optocoupler switch, the second optocoupler switch, the third optocoupler switch and the fourth optocoupler switch are connected to the master control chip through the switch interface respectively.

3. The system of claim 1, wherein, The isolation power module comprises an isolation chip, and the isolation chip is configured with an isolation module; The isolation chip comprises an input end and an output end; The input end is connected with the external direct-current power supply, and the output end is connected with the high-voltage direct-current power module; The isolation module is used for isolating the input end and the output end of the isolation chip.

4. The system of claim 1, wherein, The high-voltage direct-current power module comprises: A first processing chip, and a boost module and an output circuit configured by the first processing chip; The first processing chip communicates with the control module; The boost module is used for boosting the external direct-current power input from the isolation power module to obtain the direct-current high-voltage source; The output circuit is used for outputting the direct-current high-voltage source to the high-voltage switch.

5. The system of claim 1, wherein, The high-voltage switch comprises: A second processing chip, and a pulse processing circuit configured to the second processing chip; The second processing chip is in communication with the control module; The pulse processing circuit is configured to process the direct current high voltage source to generate the high voltage pulse signal.

6. The system of claim 4, wherein, The first processing chip is further configured with a monitoring circuit, which is connected with an external load circuit, and is configured to monitor current data of the external load circuit; The first processing chip is further configured to generate a first feedback signal according to the current data, and feed back the first feedback signal to the control module, so that the control module adjusts the control signal of the control module according to the first feedback signal.

7. The system of claim 6, wherein: The first processing chip is further configured to calculate a boost value corresponding to the direct current high voltage source in response to the control signal sent by the control module, and calculate the boost value according to the control signal; The boost module is configured to boost the external direct current power input from the isolation power module in real time according to the boost value; The control signal is determined by the following steps: The control module acquires the first feedback signal sent by the first processing chip, and judges whether the first feedback signal is less than a preset threshold value; If yes, acquire the number of times when the first feedback signal is less than the preset threshold value; When the first feedback signal is less than the preset threshold value, determine a boost level according to the number of times, and determine the boost level as the control signal.

8. A control method of an isolated pulse power supply system, characterized by, The method comprises: Isolating the external direct current power and the high voltage direct current power module by the isolation power module; Controlling the direct current high voltage source output by the high voltage direct current power module and the high voltage pulse signal output by the high voltage switch by the optocoupler switch unit; The input end of the high voltage direct current power module is connected with the isolation power module, and the output end of the high voltage direct current power module is connected with the high voltage switch; The high voltage direct current power module and the high voltage switch are both connected with the control module through the optocoupler switch unit; The optocoupler switch unit comprises a first optocoupler switch and a second optocoupler switch connected with the high voltage direct current power module, and a third optocoupler switch and a fourth optocoupler switch connected with the high voltage switch; The control module is configured to send a control signal to the high voltage direct current power module through the first optocoupler switch to control the high voltage direct current power module to output the direct current high voltage source; the high voltage direct current power module is configured to send a first feedback signal to the control module through the second optocoupler switch, so that the control module adjusts the control signal according to the first feedback signal; The control module is further configured to send a control signal to the high voltage switch through the third optocoupler switch to control the high voltage switch to output a high voltage pulse signal when the direct current high voltage source output by the high voltage direct current power module is transmitted to the high voltage switch; the high voltage switch is further configured to send a second feedback signal to the control module through the fourth optocoupler switch.

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