High-voltage driving control circuit

Abstract

The utility model provides a high-voltage driving control circuit, which comprises a one-way silicon controlled rectifier closing control module, a one-way silicon controlled rectifier cutting control module and a load, and is characterized in that a first input end of the one-way silicon controlled rectifier closing control module is connected to a closing control signal input end; the second input end of the unidirectional silicon controlled closing control module is connected to the anode of the high-voltage input source through a load; the output end of the unidirectional silicon controlled closing control module is connected to the cathode of the high-voltage input source; the first input end of the unidirectional silicon controlled rectifier cut-off control module is connected to the cut-off control signal input end, the second input end of the unidirectional silicon controlled rectifier cut-off control module is connected to the positive electrode of the high-voltage input source, and the output end of the unidirectional silicon controlled rectifier cut-off control module is connected to the negative electrode of the high-voltage input source. High-voltage driving on-off control is realized through simple combination of the unidirectional silicon controlled rectifiers, the circuit structure is simplified, and the circuit cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage drive control, and particularly relates to a high-voltage drive control circuit. BACKGROUND

[0002] The high-voltage direct-current switch is a design for solving the problem of high-voltage direct-current on-off, and the relatively mature technology is to design the switch device by using high-voltage MOS (Metal Oxide Semiconductor Field Effect Transistor) or IGBT (Insulate-Gate Bipolar Transistor) and high-voltage optical relay. The electronic component design drive circuit of the above-mentioned schemes is complex, the power consumption is high, the electronic components of high-voltage MOS and IGBT are expensive, and the cost of the drive circuit is increased. CONTENT OF THE INVENTION

[0003] Therefore, the present application aims to at least provide a high-voltage drive control circuit, which realizes high-voltage drive on-off control through simple combination of unidirectional thyristors, simplifies the circuit structure, and reduces the circuit cost.

[0004] The present application mainly includes the following aspects:

[0005] In a first aspect, the present application provides a high-voltage drive control circuit, which comprises a unidirectional thyristor closing control module, a unidirectional thyristor cutting control module and a load. The first input end of the unidirectional thyristor closing control module is connected to a closing control signal input end, the second input end of the unidirectional thyristor closing control module is connected to the positive pole of a high-voltage input source through the load, and the output end of the unidirectional thyristor closing control module is connected to the negative pole of the high-voltage input source. The first input end of the unidirectional thyristor cutting control module is connected to a cutting control signal input end, the second input end of the unidirectional thyristor cutting control module is connected to the positive pole of the high-voltage input source, and the output end of the unidirectional thyristor cutting control module is connected to the negative pole of the high-voltage input source.

[0006] In a possible implementation, the unidirectional thyristor closing control module comprises a first unidirectional thyristor closing control unit, a second unidirectional thyristor closing control unit, and a first diode, wherein the first input end of the first unidirectional thyristor closing control unit and the first input end of the second unidirectional thyristor closing control unit are respectively connected to the cathode of the first diode, the anode of the first diode is connected to the closing control signal input end, the second input end of the first unidirectional thyristor closing control unit is connected to the output end of the second unidirectional thyristor closing control unit, and the output end of the first unidirectional thyristor closing control unit is connected to the negative pole of the high-voltage input source, and the second input end of the second unidirectional thyristor closing control unit is connected to the positive pole of the high-voltage input source through the load.

[0007] In a possible implementation, the first unidirectional thyristor closing control unit comprises a first voltage division current limiting component, a first capacitor, and a first unidirectional thyristor device, and the second unidirectional thyristor closing control unit comprises a second voltage division current limiting component, a second capacitor, and a second unidirectional thyristor device, wherein the first connection end of the first unidirectional thyristor device is respectively connected to the first connection end of the first voltage division current limiting component, one end of the first capacitor, and the negative pole of the high-voltage input source, the control end of the first unidirectional thyristor device is respectively connected to the second connection end of the first voltage division current limiting component and the other end of the first capacitor, and the second connection end of the first unidirectional thyristor device is respectively connected to the first connection end of the second unidirectional thyristor device, the first connection end of the second voltage division current limiting component, and one end of the second capacitor; the control end of the second unidirectional thyristor device is respectively connected to the second connection end of the second voltage division current limiting component and the other end of the second capacitor, and the second connection end of the second unidirectional thyristor device is connected to the positive pole of the high-voltage input source through the load; and the third connection end of the first voltage division current limiting component and the third connection end of the second voltage division current limiting component are respectively connected to the cathode of the first diode.

[0008] In a possible implementation, the first voltage division current limiting component comprises a first resistor and a second resistor, and the second voltage division current limiting component comprises a third resistor and a fourth resistor, wherein one end of the first resistor is respectively connected to the negative pole of the high-voltage input source, one end of the first capacitor, and the first connection end of the first unidirectional thyristor device, the other end of the first resistor is respectively connected to one end of the second resistor, the other end of the first capacitor, and the control end of the first unidirectional thyristor device, and the other end of the second resistor is connected to the cathode of the first diode; one end of the third resistor is respectively connected to the second connection end of the first unidirectional thyristor device, one end of the second capacitor, and the first connection end of the second unidirectional thyristor device, the other end of the third resistor is respectively connected to one end of the fourth resistor, the other end of the second capacitor, and the control end of the second unidirectional thyristor device, and the other end of the fourth resistor is connected to the cathode of the first diode.

[0009] In a possible implementation, the unidirectional thyristor cut-off control module comprises a first unidirectional thyristor cut-off control unit, a second unidirectional thyristor cut-off control unit, and a second diode, wherein the first input end of the first unidirectional thyristor cut-off control unit and the first input end of the second unidirectional thyristor cut-off control unit are respectively connected to the cathode of the second diode, the anode of the second diode is connected to the cut-off control signal input end, the second input end of the first unidirectional thyristor cut-off control unit is connected to the output end of the second unidirectional thyristor cut-off control unit, the output end of the first unidirectional thyristor cut-off control unit is connected to the negative pole of the high-voltage input source, and the second input end of the second unidirectional thyristor cut-off control unit is connected to the positive pole of the high-voltage input source.

[0010] In a possible implementation, the first unidirectional thyristor cut-off control unit comprises a third voltage dividing current limiting component, a third capacitor, and a third unidirectional thyristor device, and the second unidirectional thyristor cut-off control unit comprises a fourth voltage dividing current limiting component, a fourth capacitor, and a fourth unidirectional thyristor device, wherein the first connection end of the third unidirectional thyristor device is respectively connected to the first connection end of the third voltage dividing current limiting component, one end of the third capacitor, and the negative pole of the high-voltage input source, the control end of the third unidirectional thyristor device is respectively connected to the second connection end of the third voltage dividing current limiting component and the other end of the third capacitor, the second connection end of the third unidirectional thyristor device is respectively connected to the first connection end of the fourth unidirectional thyristor device, the first connection end of the fourth voltage dividing current limiting component, and one end of the fourth capacitor; the control end of the fourth unidirectional thyristor device is respectively connected to the second connection end of the fourth voltage dividing current limiting component and the other end of the fourth capacitor, and the second connection end of the fourth unidirectional thyristor device is connected to the positive pole of the high-voltage input source; and the third connection end of the third voltage dividing current limiting component and the third connection end of the fourth voltage dividing current limiting component are respectively connected to the cathode of the second diode.

[0011] In a possible implementation, the third voltage dividing current limiting component comprises a fifth resistor and a sixth resistor, and the fourth voltage dividing current limiting component comprises a seventh resistor and an eighth resistor, wherein one end of the fifth resistor is respectively connected to the negative pole of the high-voltage input source, one end of the third capacitor, and the first connection end of the third unidirectional thyristor device, the other end of the fifth resistor is respectively connected to one end of the sixth resistor, the other end of the third capacitor, and the control end of the third unidirectional thyristor device, and the other end of the sixth resistor is connected to the cathode of the second diode; one end of the seventh resistor is respectively connected to the second connection end of the third unidirectional thyristor device, one end of the fourth capacitor, and the first connection end of the fourth unidirectional thyristor device, the other end of the seventh resistor is respectively connected to one end of the eighth resistor, the other end of the fourth capacitor, and the control end of the fourth unidirectional thyristor device, and the other end of the eighth resistor is connected to the cathode of the second diode.

[0012] In a possible implementation, the high-voltage drive control circuit further comprises a current-limiting module, wherein the first connection end of the current-limiting module is connected to the positive pole of the high-voltage input source and one end of the load respectively, the second connection end of the current-limiting module is connected to the second input end of the unidirectional thyristor closing control module and the other end of the load respectively, and the third connection end and the fourth connection end of the current-limiting module are connected to the second input end of the unidirectional thyristor cutting control module.

[0013] In a possible implementation, the current-limiting module comprises a current-limiting resistor, wherein one end of the current-limiting resistor is connected to the positive pole of the high-voltage input source, and the other end of the current-limiting resistor is connected to the second input end of the unidirectional thyristor cutting control module.

[0014] In a possible implementation, the current-limiting module comprises a fifth capacitor, wherein one end of the fifth capacitor is connected to the second input end of the unidirectional thyristor closing control module, and the other end of the fifth capacitor is connected to the other end of the current-limiting resistor and the second input end of the unidirectional thyristor cutting control module respectively.

[0015] The high-voltage drive control circuit provided by the embodiment of the present application comprises a unidirectional thyristor closing control module, a unidirectional thyristor cutting control module and a load, wherein the first input end of the unidirectional thyristor closing control module is connected to a closing control signal input end, the second input end of the unidirectional thyristor closing control module is connected to the positive pole of a high-voltage input source through the load, and the output end of the unidirectional thyristor closing control module is connected to the negative pole of the high-voltage input source; the first input end of the unidirectional thyristor cutting control module is connected to a cutting control signal input end, the second input end of the unidirectional thyristor cutting control module is connected to the positive pole of the high-voltage input source, and the output end of the unidirectional thyristor cutting control module is connected to the negative pole of the high-voltage input source. The high-voltage drive on-off control is realized by the simple combination of unidirectional thyristors, the circuit structure is simplified, the circuit cost is reduced, and the unidirectional thyristor devices are connected in series to realize the closing or cutting of the high-voltage circuit for the unidirectional thyristor closing control module or the unidirectional thyristor cutting control module, so that the use voltage is increased and the static power consumption is reduced.

[0016] In order to make the above objectives, characteristics and advantages of the present application more apparent, the following will describe a preferred embodiment in detail, and the accompanying drawings will be referred to, and the detailed description will be as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without paying creative labor on the basis of these drawings.

[0018] Figure 1Fig. 1 shows a structural schematic diagram of a high-voltage drive control circuit according to an embodiment of the present application;

[0019] Figure 2 Fig. 1 shows a structural schematic diagram of a high-voltage drive control circuit according to an embodiment of the present application;

[0020] Figure 3 Fig. 1 shows a structural schematic diagram of a high-voltage drive control circuit according to an embodiment of the present application;

[0021] Figure 4 Fig. 1 shows a structural schematic diagram of a high-voltage drive control circuit according to an embodiment of the present application;

[0022] Figure 5 Fig. 1 shows a structural schematic diagram of a high-voltage drive control circuit according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] To make the objectives, technical schemes and advantages of the embodiments of the present application clearer, the technical schemes in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of illustration and description, and are not used to limit the protection scope of the present application. In addition, it should be understood that the schematic drawings are not drawn according to the actual proportions. The flowcharts show the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowcharts can not be implemented in sequence, and the steps without logical context relationship can be reversed in sequence or implemented simultaneously. In addition, one or more other operations can be added to the flowcharts or one or more operations can be removed from the flowcharts under the guidance of the content of the present application.

[0024] In addition, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] In the high-voltage field, the traditional high-voltage drive control circuit has the following problems:

[0026] 1) The drive circuit design is complex and has high power consumption;

[0027] 2) The high-voltage switching device is expensive, which increases the cost of the circuit.

[0028] Based on this, the embodiment of the present application provides a high-voltage drive control circuit, which realizes high-voltage drive on-off control through simple combination of unidirectional silicon-controlled rectifiers, simplifies circuit structure, reduces circuit cost, and uses silicon-controlled rectifier devices in series to realize closing or cutting off of high-voltage circuit for the unidirectional silicon-controlled rectifier closing control module or the unidirectional silicon-controlled rectifier cutting off control module, thereby increasing the use voltage and reducing the static power consumption, and the specific implementation is as follows.

[0029] Please refer to Figure 1 , Figure 1 Fig. 1 shows a structure schematic diagram of a high-voltage drive control circuit provided by the embodiment of the present application. As shown in Figure 1 , the high-voltage drive control circuit provided by the embodiment of the present application comprises a unidirectional silicon-controlled rectifier closing control module 1, a unidirectional silicon-controlled rectifier cutting off control module 2 and a load RL.

[0030] Among them, the first input end of the unidirectional silicon-controlled rectifier closing control module 1 is connected to the closing control signal input end ON-SIGNAL, the second input end of the unidirectional silicon-controlled rectifier closing control module 1 is connected to the positive pole VIN+ of the high-voltage input source through the load RL, and the output end of the unidirectional silicon-controlled rectifier closing control module 1 is connected to the negative pole VIN- of the high-voltage input source.

[0031] The first input end of the unidirectional silicon-controlled rectifier cutting off control module 2 is connected to the cutting off control signal input end OFF-SIGNAL, the second input end of the unidirectional silicon-controlled rectifier cutting off control module 2 is connected to the positive pole VIN+ of the high-voltage input source, and the output end of the unidirectional silicon-controlled rectifier cutting off control module 2 is connected to the negative pole VIN- of the high-voltage input source.

[0032] In a preferred embodiment, please refer to Figure 2 , Figure 2 Fig. 2 shows another structure schematic diagram of a high-voltage drive control circuit provided by the embodiment of the present application. As shown in Figure 2 , the unidirectional silicon-controlled rectifier closing control module 1 comprises a first unidirectional silicon-controlled rectifier closing control unit 11, a second unidirectional silicon-controlled rectifier closing control unit 12 and a first diode D1, wherein the first input end of the first unidirectional silicon-controlled rectifier closing control unit 11 and the first input end of the second unidirectional silicon-controlled rectifier closing control unit 12 are respectively connected to the cathode of the first diode D1, the anode of the first diode D1 is connected to the closing control signal input end ON-SIGNAL,

[0033] the second input end of the first unidirectional silicon-controlled rectifier closing control unit 11 is connected to the output end of the second unidirectional silicon-controlled rectifier closing control unit 12, the output end of the first unidirectional silicon-controlled rectifier closing control unit 11 is connected to the negative pole VIN- of the high-voltage input source, and the second input end of the second unidirectional silicon-controlled rectifier closing control unit 12 is connected to the positive pole VIN+ of the high-voltage input source through the load RL.

[0034] In another preferred embodiment, the unidirectional thyristor cut-off control module 2 comprises a first unidirectional thyristor cut-off control unit 21, a second unidirectional thyristor cut-off control unit 22 and a second diode D2,

[0035] The first input end of the first unidirectional thyristor cut-off control unit 21 and the first input end of the second unidirectional thyristor cut-off control unit 22 are respectively connected to the cathode of the second diode D2, and the anode of the second diode D2 is connected to the cut-off control signal input end OFF-SIGNAL,

[0036] The second input end of the first unidirectional thyristor cut-off control unit 21 is connected to the output end of the second unidirectional thyristor cut-off control unit 22, the output end of the first unidirectional thyristor cut-off control unit 21 is connected to the negative pole VIN- of the high-voltage input source, and the second input end of the second unidirectional thyristor cut-off control unit 22 is connected to the positive pole VIN+ of the high-voltage input source.

[0037] Please refer to Figure 3 , Figure 3 A structure schematic diagram of a high-voltage drive control circuit provided by an embodiment of the present application is shown. As shown in Figure 3 The first unidirectional thyristor cut-off control unit 21 comprises a first voltage division current limiting component 110, a first capacitor C1 and a first unidirectional thyristor device 111, and the second unidirectional thyristor cut-off control unit 22 comprises a second voltage division current limiting component 120, a second capacitor C2 and a second unidirectional thyristor device 121,

[0038] The first connection end of the first unidirectional thyristor device 111 is respectively connected to the first connection end of the first voltage division current limiting component 110, one end of the first capacitor C1 and the negative pole VIN- of the high-voltage input source, the control end of the first unidirectional thyristor device 111 is respectively connected to the second connection end of the first voltage division current limiting component 110 and the other end of the first capacitor C1, and the second connection end of the first unidirectional thyristor device 111 is respectively connected to the first connection end of the second unidirectional thyristor device 121, the first connection end of the second voltage division current limiting component 120 and one end of the second capacitor C2;

[0039] The control end of the second unidirectional thyristor device 121 is respectively connected to the second connection end of the second voltage division current limiting component 120 and the other end of the second capacitor C2, and the second connection end of the second unidirectional thyristor device 121 is connected to the positive pole VIN+ of the high-voltage input source through the load RL;

[0040] The third connection end of the first voltage division current limiting component 110 and the third connection end of the second voltage division current limiting component 120 are respectively connected to the cathode of the first diode D1.

[0041] In another preferred embodiment, the first unidirectional thyristor cut-off control unit 21 comprises a third voltage dividing current limiting component 210, a third capacitor C3 and a third unidirectional thyristor device 211, the second unidirectional thyristor cut-off control unit 22 comprises a fourth voltage dividing current limiting component 220, a fourth capacitor C4 and a fourth unidirectional thyristor device 221,

[0042] wherein the first connecting end of the third unidirectional thyristor device 211 is connected to the first connecting end of the third voltage dividing current limiting component 210, one end of the third capacitor C3 and the negative pole VIN- of the high voltage input source respectively, the control end of the third unidirectional thyristor device 211 is connected to the second connecting end of the third voltage dividing current limiting component 210 and the other end of the third capacitor C3 respectively, the second connecting end of the third unidirectional thyristor device 211 is connected to the first connecting end of the fourth unidirectional thyristor device 221, the first connecting end of the fourth voltage dividing current limiting component 220 and one end of the fourth capacitor C4 respectively;

[0043] the control end of the fourth unidirectional thyristor device 221 is connected to the second connecting end of the fourth voltage dividing current limiting component 220 and the other end of the fourth capacitor C4 respectively, and the second connecting end of the fourth unidirectional thyristor device 221 is connected to the positive pole VIN+ of the high voltage input source;

[0044] the third connecting end of the third voltage dividing current limiting component 210 and the third connecting end of the fourth voltage dividing current limiting component 220 are connected to the cathode of the second diode D2 respectively.

[0045] In a preferred embodiment, the first voltage dividing current limiting component 110 comprises a first resistor R1 and a second resistor R2, the second voltage dividing current limiting component 120 comprises a third resistor R3 and a fourth resistor R4,

[0046] wherein one end of the first resistor R1 is connected to the negative pole VIN- of the high voltage input source, one end of the first capacitor C1 and the first connecting end of the first unidirectional thyristor device 111 respectively, the other end of the first resistor R1 is connected to one end of the second resistor R2, the other end of the first capacitor C1 and the control end of the first unidirectional thyristor device 111 respectively, and the other end of the second resistor R2 is connected to the cathode of the first diode D1;

[0047] one end of the third resistor R3 is connected to the second connecting end of the first unidirectional thyristor device 111, one end of the second capacitor C2 and the first connecting end of the second unidirectional thyristor device 121 respectively, the other end of the third resistor R3 is connected to one end of the fourth resistor R4, the other end of the second capacitor C2 and the control end of the second unidirectional thyristor device 121 respectively, and the other end of the fourth resistor R4 is connected to the cathode of the first diode D1.

[0048] In a preferred embodiment, as Figure 3As shown, the third voltage division current limiting component 210 includes a fifth resistor R5 and a sixth resistor R6, and the fourth voltage division current limiting component 220 includes a seventh resistor R7 and an eighth resistor R8,

[0049] wherein one end of the fifth resistor R5 is connected to the negative pole of the high-voltage input source VIN-, one end of the third capacitor C3, and the first connection end of the third unidirectional thyristor 211 respectively, the other end of the fifth resistor R5 is connected to one end of the sixth resistor R6, the other end of the third capacitor C3, and the control end of the third unidirectional thyristor 211 respectively, and the other end of the sixth resistor R6 is connected to the cathode of the second diode D2;

[0050] one end of the seventh resistor R7 is connected to the second connection end of the third unidirectional thyristor 211, one end of the fourth capacitor C4, and the first connection end of the fourth unidirectional thyristor 221 respectively, the other end of the seventh resistor R7 is connected to one end of the eighth resistor R8, the other end of the fourth capacitor C4, and the control end of the fourth unidirectional thyristor 221 respectively, and the other end of the eighth resistor R8 is connected to the cathode of the second diode D2.

[0051] Please refer to Figure 4 , Figure 4 Fig. 4 shows a structural schematic diagram of a high-voltage driving control circuit according to an embodiment of the present application. As shown in the figure, Figure 4 the high-voltage driving control circuit provided by the present application further includes a current limiting module 3,

[0052] wherein the first connection end of the current limiting module 3 is connected to the positive pole of the high-voltage input source VIN+ and one end of the load RL respectively, the second connection end of the current limiting module 3 is connected to the second input end of the unidirectional thyristor closing control module 1 and the other end of the load RL respectively, and the third connection end and the fourth connection end of the current limiting module 3 are connected to the second input end of the unidirectional thyristor cutting control module 2.

[0053] In a preferred embodiment, as shown in the figure, Figure 3 the current limiting module includes a current limiting resistor R5 and a fifth capacitor C5, wherein one end of the current limiting resistor R5 is connected to the positive pole of the high-voltage input source VIN+ and one end of the load RN respectively, and the other end of the current limiting resistor R5 is connected to the second input end of the unidirectional thyristor cutting control module 2, i.e. the other end of the current limiting resistor R5 is connected to the second connection end of the fourth unidirectional thyristor 221 in the unidirectional thyristor cutting control module 2.

[0054] One end of the fifth capacitor C5 is connected to the other end of the load RL, the second input end of the thyristor closing control module 1 (i.e. one end of the fifth capacitor C5 is connected to the second input end of the second thyristor device 121 in the thyristor closing control module 1), and the other end of the fifth capacitor C5 is connected to the other end of the current limiting resistor R5 and the second input end of the thyristor cutting control module 2 (i.e. the other end of the current limiting resistor R5 is connected to the second connection end of the fourth thyristor device 221).

[0055] As shown in Figure 3 , the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 provided by the present application respectively prevent the first thyristor device 111, the second thyristor device 121, the third thyristor device 211 and the fourth thyristor device 221 from being triggered by mistake.

[0056] In a specific embodiment, the thyristor device provided by the present application can be a JX016 or a control chip of a similar function type, and specifically, taking a thyristor with a JX016 model as an example, the first connection end of the thyristor device is a thyristor cathode K, the second connection end of the thyristor device is a thyristor anode A, and the control end of the thyristor device is a thyristor gate G.

[0057] Please refer to Figure 5 , Figure 5 , which shows a structure schematic diagram of a high-voltage drive control circuit provided by an embodiment of the present application. Figure 5 Based on Figure 3 , the high-voltage drive control circuit formed by using a thyristor as a thyristor device, as shown in Figure 5 , the first connection end of the thyristor device is a thyristor cathode K, the second connection end of the thyristor device is a thyristor anode A, and the control end of the thyristor device is a thyristor gate G, and the corresponding connection mode is as shown in Figure 3 , which will not be repeated here.

[0058] As shown in Figure 5 , the high-voltage drive control circuit provided by the present application has the following working principle:

[0059] After the high-voltage input power is powered on, the closing control signal input end ON-SIGNAL receives a closing trigger signal, so that the first thyristor device 111 and the second thyristor device 121 are closed and conductive, and after the first thyristor device 111 and the second thyristor device 121 are closed and conductive, the load RL normally works, and the high-voltage direct current charges the fifth capacitor C5 through the current limiting resistor R5.

[0060] When the first unidirectional thyristor 111 and the second unidirectional thyristor 121 need to be turned off, the OFF-SIGNAL input end of the turn-off control signal is cut off to make the third unidirectional thyristor 211 and the second unidirectional thyristor 221 closed and conductive, and at the moment when the third unidirectional thyristor 211 and the second unidirectional thyristor 221 conduct, a reverse voltage is applied between the first unidirectional thyristor 111 and the second unidirectional thyristor 121 to make the first unidirectional thyristor 111 and the second unidirectional thyristor 121 broken, and due to the current limiting resistor R5, the holding current of the third unidirectional thyristor 211 and the second unidirectional thyristor 221 is not enough, so the third unidirectional thyristor 211 and the second unidirectional thyristor 221 are also broken, the whole circuit is broken, the load RL is not working, and the switching control is realized.

[0061] Therefore, the high-voltage drive control circuit provided by the application can increase the use voltage by the series connection of the unidirectional thyristors in the unidirectional thyristor closed control module or the unidirectional thyristor cut-off control module, reduce the static power consumption of the whole high-voltage drive control circuit, and realize the drive control of the load without introducing other complex circuit structures, thereby simplifying the drive circuit of the load and reducing the cost.

[0062] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the foregoing method embodiments, and will not be described here. In several embodiments provided in the application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interface, device or unit, which can be electrical, mechanical or other forms.

[0063] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place or distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0064] In addition, the functional units in each embodiment of the application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0065] 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 nonvolatile computer readable storage medium executable by a processor. 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 methods 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), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0066] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which 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. A high voltage drive control circuit, characterized by, The high-voltage drive control circuit comprises a unidirectional thyristor closing control module, a unidirectional thyristor cut-off control module and a load, The first input end of the unidirectional thyristor closing control module is connected to a closing control signal input end, the second input end of the unidirectional thyristor closing control module is connected to a positive pole of a high-voltage input source through the load, and the output end of the unidirectional thyristor closing control module is connected to a negative pole of the high-voltage input source. The first input end of the unidirectional thyristor cut-off control module is connected to a cut-off control signal input end, the second input end of the unidirectional thyristor cut-off control module is connected to the positive pole of the high-voltage input source, and the output end of the unidirectional thyristor cut-off control module is connected to the negative pole of the high-voltage input source.

2. The high voltage drive control circuit of claim 1, wherein, The unidirectional thyristor closing control module comprises a first unidirectional thyristor closing control unit, a second unidirectional thyristor closing control unit and a first diode, The first input end of the first unidirectional thyristor closing control unit and the first input end of the second unidirectional thyristor closing control unit are respectively connected to the cathode of the first diode, and the anode of the first diode is connected to the closing control signal input end, The second input end of the first unidirectional thyristor closing control unit is connected to the output end of the second unidirectional thyristor closing control unit, the output end of the first unidirectional thyristor closing control unit is connected to the negative pole of the high-voltage input source, and the second input end of the second unidirectional thyristor closing control unit is connected to the positive pole of the high-voltage input source through the load.

3. The high voltage drive control circuit of claim 2, wherein, The first unidirectional thyristor closing control unit comprises a first voltage division current limiting component, a first capacitor and a first unidirectional thyristor device, and the second unidirectional thyristor closing control unit comprises a second voltage division current limiting component, a second capacitor and a second unidirectional thyristor device, The first connection end of the first unidirectional thyristor device is respectively connected to the first connection end of the first voltage division current limiting component, one end of the first capacitor and the negative pole of the high-voltage input source, the control end of the first unidirectional thyristor device is respectively connected to the second connection end of the first voltage division current limiting component and the other end of the first capacitor, and the second connection end of the first unidirectional thyristor device is respectively connected to the first connection end of the second unidirectional thyristor device, the first connection end of the second voltage division current limiting component and one end of the second capacitor; The control end of the second unidirectional thyristor device is respectively connected to the second connection end of the second voltage division current limiting component and the other end of the second capacitor, and the second connection end of the second unidirectional thyristor device is connected to the positive pole of the high-voltage input source through the load; The third connection end of the first voltage division current limiting component and the third connection end of the second voltage division current limiting component are respectively connected to the cathode of the first diode.

4. The high voltage drive control circuit of claim 3, wherein, The first voltage division current limiting component comprises a first resistor and a second resistor, and the second voltage division current limiting component comprises a third resistor and a fourth resistor, One end of the first resistor is connected to the negative pole of the high-voltage input source, one end of the first capacitor and the first connection end of the first unidirectional silicon-controlled device respectively, and the other end of the first resistor is connected to one end of the second resistor, the other end of the first capacitor and the control end of the first unidirectional silicon-controlled device respectively, and the other end of the second resistor is connected to the cathode of the first diode. One end of the third resistor is connected to the second connection end of the first unidirectional silicon-controlled device, one end of the second capacitor and the first connection end of the second unidirectional silicon-controlled device respectively, and the other end of the third resistor is connected to one end of the fourth resistor, the other end of the second capacitor and the control end of the second unidirectional silicon-controlled device respectively, and the other end of the fourth resistor is connected to the cathode of the first diode.

5. The high voltage drive control circuit of claim 1, wherein, The unidirectional silicon-controlled cut-off control module comprises a first unidirectional silicon-controlled cut-off control unit, a second unidirectional silicon-controlled cut-off control unit and a second diode, The first input end of the first unidirectional silicon-controlled cut-off control unit and the first input end of the second unidirectional silicon-controlled cut-off control unit are connected to the cathode of the second diode respectively, and the anode of the second diode is connected to the cut-off control signal input end. The second input end of the first unidirectional silicon-controlled cut-off control unit is connected to the output end of the second unidirectional silicon-controlled cut-off control unit, the output end of the first unidirectional silicon-controlled cut-off control unit is connected to the negative pole of the high-voltage input source, and the second input end of the second unidirectional silicon-controlled cut-off control unit is connected to the positive pole of the high-voltage input source.

6. The high voltage drive control circuit of claim 5, wherein, The first unidirectional silicon-controlled cut-off control unit comprises a third voltage dividing current limiting component, a third capacitor and a third unidirectional silicon-controlled device, and the second unidirectional silicon-controlled cut-off control unit comprises a fourth voltage dividing current limiting component, a fourth capacitor and a fourth unidirectional silicon-controlled device, The first connection end of the third unidirectional silicon-controlled device is connected to the first connection end of the third voltage dividing current limiting component, one end of the third capacitor and the negative pole of the high-voltage input source respectively, the control end of the third unidirectional silicon-controlled device is connected to the second connection end of the third voltage dividing current limiting component and the other end of the third capacitor respectively, and the second connection end of the third unidirectional silicon-controlled device is connected to the first connection end of the fourth unidirectional silicon-controlled device, the first connection end of the fourth voltage dividing current limiting component and one end of the fourth capacitor respectively. The control end of the fourth unidirectional silicon-controlled device is connected to the second connection end of the fourth voltage dividing current limiting component and the other end of the fourth capacitor respectively, and the second connection end of the fourth unidirectional silicon-controlled device is connected to the positive pole of the high-voltage input source. The third connection end of the third voltage dividing current limiting component and the third connection end of the fourth voltage dividing current limiting component are connected to the cathode of the second diode respectively.

7. The high voltage drive control circuit of claim 6, wherein, The third voltage dividing current limiting component comprises a fifth resistor and a sixth resistor, and the fourth voltage dividing current limiting component comprises a seventh resistor and an eighth resistor, One end of the fifth resistor is connected to the negative pole of the high-voltage input source, one end of the third capacitor and the first connection end of the third unidirectional silicon controlled rectifier respectively, the other end of the fifth resistor is connected to one end of the sixth resistor, the other end of the third capacitor and the control end of the third unidirectional silicon controlled rectifier respectively, and the other end of the sixth resistor is connected to the cathode of the second diode. One end of the seventh resistor is connected to the second connection end of the third unidirectional silicon controlled rectifier, one end of the fourth capacitor and the first connection end of the fourth unidirectional silicon controlled rectifier respectively, the other end of the seventh resistor is connected to one end of the eighth resistor, the other end of the fourth capacitor and the control end of the fourth unidirectional silicon controlled rectifier respectively, and the other end of the eighth resistor is connected to the cathode of the second diode.

8. The high voltage drive control circuit of claim 1, wherein, The high-voltage drive control circuit further comprises a current limiting module, One end of the fifth resistor is connected to the negative pole of the high-voltage input source, one end of the third capacitor and the first connection end of the third unidirectional silicon controlled rectifier respectively, the other end of the fifth resistor is connected to one end of the sixth resistor, the other end of the third capacitor and the control end of the third unidirectional silicon controlled rectifier respectively, and the other end of the sixth resistor is connected to the cathode of the second diode.

9. The high voltage drive control circuit of claim 8, wherein, The current limiting module comprises a current limiting resistor, One end of the fifth resistor is connected to the negative pole of the high-voltage input source, one end of the third capacitor and the first connection end of the third unidirectional silicon controlled rectifier respectively, the other end of the fifth resistor is connected to one end of the sixth resistor, the other end of the third capacitor and the control end of the third unidirectional silicon controlled rectifier respectively, and the other end of the sixth resistor is connected to the cathode of the second diode.

10. The high voltage drive control circuit of claim 9, wherein, The current limiting module comprises a fifth capacitor, One end of the fifth capacitor is connected to the second input end of the unidirectional silicon controlled closing control module, and the other end of the fifth capacitor is connected to the other end of the current limiting resistor and the second input end of the unidirectional silicon controlled cut-off control module respectively.

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