High-voltage output power distribution surge suppression control circuit structure

Abstract

The utility model relates to the technical field of high-voltage output control circuits, and provides a high-voltage output power distribution surge suppression control circuit structure, which comprises an MCU controller, a main loop and a pre-charging loop, the main loop comprises a high-voltage bus and a control power supply, a first resistor is connected with high-voltage power distribution output, one end of the first resistor is grounded, and the other end of the first resistor is grounded. The second resistor is connected with a relay, and one end of the second resistor is connected with a third resistor. According to the utility model, high level is generated under the control of a main loop, a power tube is switched on, a relay coil is electrified, a relay is closed, all high-voltage bus current passes through a normally open contact of the relay and flows to high-voltage power distribution output, low level is generated under the pre-charging control of the MCU controller, a pre-charging control chip is switched off, and the output relay is at low level. The load fluctuation of the power distribution output end does not affect the pre-charging branch, the reliability and safety of the device are improved, the control is simplified, and the production debugging time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage output control circuits, in particular to a high-voltage output power distribution surge suppression control circuit structure. Background Art

[0002] High-voltage distribution equipment refers to electrical products that play a role in switching, controlling or protecting the power generation, transmission, distribution, energy conversion and consumption of power systems.

[0003] The existing technology in this area cannot control the turn-on voltage at both ends of the high-voltage distribution switch or relay. When the distribution switch is turned on, the pressure difference before and after the distribution is large, and the voltage is uncontrolled, which can easily burn or damage the distribution switch, reducing the service life of the distribution switch. At the same time, the pre-charging circuit cannot be disconnected after working, and the pre-charging branch is easily damaged when fluctuations or overloads occur at the distribution output end. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a high-voltage output distribution surge suppression control circuit structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-voltage output distribution surge suppression control circuit structure, including an MCU controller, a main circuit, and a pre-charging circuit. The main circuit includes a high-voltage bus and a control power supply. The high-voltage bus is connected to a main circuit control chip, and the main circuit control chip is connected to a resistor 1, and the resistor 1 is connected to a high-voltage distribution output. One end of the resistor 1 is connected to ground, and one end of the main circuit control chip is connected to a resistor 2, and the resistor 2 is connected to a relay. One end of the resistor 2 is connected to a resistor 3, and the resistor 3 is connected to X82. One end of the resistor 3 is connected to ground, and the high-voltage bus is connected to a relay normally open contact, and one end of the relay normally open contact is connected to the high-voltage distribution output.

[0006] As a further description of the above technical solution:

[0007] The control power supply is connected to a relay coil, two ends of the relay coil are connected to a diode 1, one end of the diode 1 is connected to a power tube, one end of the power tube is grounded, one end of the power tube is connected to a capacitor 1, the capacitor 1 is grounded, the capacitor 1 is connected in parallel with a resistor 4, and one end of the resistor 4 is connected to a resistor 5.

[0008] As a further description of the above technical solution:

[0009] The pre-charge circuit includes a pre-charge control chip, the CS end of the pre-charge control chip is connected to capacitor 2, one end of the capacitor 2 is connected to the COM end of the pre-charge control chip, the capacitor 2 is connected to capacitor 3, one end of the capacitor 3 is connected to the VO end of the pre-charge control chip, the capacitor 3 is connected in parallel with capacitor 4, one end of the capacitor 4 is connected to the ground, and one end of the capacitor 4 is connected to the relay.

[0010] As a further description of the above technical solution:

[0011] The GND end of the pre-charge control chip is connected to capacitor five, one end of which is connected to the VIN end of the pre-charge control chip, capacitor five is connected in parallel with capacitor six, capacitor six is ​​connected to the control power supply, one end of capacitor six is ​​connected to the ground, the Ctrl end of the pre-charge control chip is connected to resistor six, resistor six is ​​connected to diode two, one end of diode two is connected to capacitor seven, and capacitor seven is connected to the ground.

[0012] As a further description of the above technical solution:

[0013] One end of the diode 2 is connected to the MCU controller.

[0014] As a further description of the above technical solution:

[0015] The high-voltage bus is connected to the MCU controller, and the high-voltage power distribution output is connected to the MCU controller.

[0016] As a further description of the above technical solution:

[0017] One end of the resistor 5 is connected to the MCU controller.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, a high level is sent out through the main circuit control, at this time the power tube is turned on, and then the relay coil is energized and the relay is energized, and all the high-voltage bus current flows from the normally open contact of the relay to the high-voltage distribution output, and at the same time the pre-charge control of the MCU controller sends a low level, the pre-charge control chip is closed, the output relay is low level, and the main circuit control chip is controlled to be turned off. At this time, the voltage of the high-voltage bus cannot be charged to the high-voltage distribution output through the main circuit control chip and the resistor pair, and the load fluctuation at the distribution output end does not affect the pre-charge branch, which increases the reliability and safety of the equipment, simplifies the control, and reduces the production debugging time.

[0020] 2. In the utility model, when output power distribution is to be carried out, the pre-charge control of the MCU controller sends a high level to control the pre-charge control chip to output a 12V voltage to the relay, and then the relay controls the main circuit control chip to open. At this time, the voltage of the high-voltage bus is charged to the high-voltage distribution output through the main circuit control chip and a pair of resistors to realize the control of the pre-charge branch. When high-voltage power distribution is performed, the voltage of the distribution switch can be controlled, which reduces the operation and maintenance costs, increases the reliability of the equipment, and brings good economic benefits to the society. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a high-voltage output power distribution surge suppression control circuit structure proposed by the utility model;

[0022] Figure 2 This is a principle block diagram of a high-voltage output distribution surge suppression control circuit structure proposed by the utility model;

[0023] Figure 3 Partial principle of a high voltage output distribution surge suppression control circuit structure proposed by the utility model Figure 1 ;

[0024] Figure 4 Partial principle of a high voltage output distribution surge suppression control circuit structure proposed by the utility model Figure 2 .

[0025] Legend:

[0026] 1. MCU controller; 2. Main circuit; 3. Pre-charge circuit; 4. High-voltage bus; 5. Main circuit control chip; 6. Resistor 1; 7. High-voltage distribution output; 8. Grounding; 9. Resistor 2; 10. Relay; 11. Resistor 3; 12. X82; 13. Relay normally open contact; 14. Control power supply; 15. Relay coil; 16. Diode 1; 17. Power tube; 18. Capacitor 1; 19. Resistor 4; 20. Resistor 5; 21. Pre-charge control chip; 22. Capacitor 2; 23. Capacitor 3; 24. Capacitor 4; 25. Capacitor 5; 26. Capacitor 6; 27. Resistor 6; 28. Diode 2; 29. ​​Capacitor 7. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-Figure 4, an embodiment provided by the utility model: a high-voltage output distribution surge suppression control circuit structure, including an MCU controller 1, a main circuit 2, and a pre-charging circuit 3, the main circuit 2 includes a high-voltage bus 4, a control power supply 14, the high-voltage bus 4 is connected to a main circuit control chip 5, the main circuit control chip 5 is connected to a resistor 1 6, the resistor 1 6 is connected to a high-voltage distribution output 7, one end of the resistor 1 6 is connected to a ground 8, one end of the main circuit control chip 5 is connected to a resistor 2 9, the resistor 2 9 is connected to a relay 10, one end of the resistor 2 9 is connected to a resistor 3 11, the resistor 3 11 is connected to X8212, one end of the resistor 3 11 is connected to the ground 8, the high-voltage bus 4 is connected to a normally open contact of a relay 10, and one end of the normally open contact of the relay 10 is connected to the high-voltage distribution output 7, A high level is emitted through the control of the main circuit 2, at which time the power tube 17 is turned on, and then the coil of the relay 10 is energized and attracted, and all the current of the high-voltage bus 4 flows from the normally open contact of the relay 10 to the high-voltage distribution output 7. At the same time, the pre-charge control of the MCU controller 1 emits a low level, the pre-charge control chip 21 is closed, the output relay 10 is at a low level, and the main circuit control chip 5 is controlled to be turned off. At this time, the voltage of the high-voltage bus 4 cannot be charged to the high-voltage distribution output 7 through the main circuit control chip 5 and the resistor 6, and the load fluctuation at the distribution output end does not affect the pre-charge branch, which increases the reliability and safety of the equipment. At the same time, the control is simplified, the production debugging time is shortened, and the control of the pre-charge branch is realized. During high-voltage distribution, the voltage of the distribution switch is controllable, which reduces the operation and maintenance costs and increases the reliability of the equipment.

[0029] The control power supply 14 is connected to the coil of the relay 10, and the two ends of the coil of the relay 10 are connected to a diode 16, one end of the diode 16 is connected to a power tube 17, one end of the power tube 17 is connected to the ground 8, one end of the power tube 17 is connected to a capacitor 18, the capacitor 18 is connected to the ground 8, the capacitor 18 is connected in parallel with a resistor 4 19, one end of the resistor 4 19 is connected to a resistor 5 20, the pre-charge circuit 3 includes a pre-charge control chip 21, the CS end of the pre-charge control chip 21 is connected to a capacitor 22, and the capacitor 22 2 is connected to the COM terminal of the pre-charge control chip 21, capacitor 2 2 is connected to capacitor 3 23, one end of capacitor 3 23 is connected to the VO terminal of the pre-charge control chip 21, capacitor 3 23 is connected in parallel with capacitor 4 24, one end of capacitor 4 24 is connected to ground 8, one end of capacitor 4 24 is connected to relay 10, the GND terminal of the pre-charge control chip 21 is connected to capacitor 5 25, one end of capacitor 5 25 is connected to the VIN terminal of the pre-charge control chip 21, capacitor 5 25 is connected in parallel with capacitor 6 26, capacitor Six 26 is connected to the control power supply 14, one end of capacitor six 26 is connected to the ground 8, the Ctrl end of the pre-charge control chip 21 is connected to resistor six 27, resistor six 27 is connected to diode two 28, one end of diode two 28 is connected to capacitor seven 29, capacitor seven 29 is connected to the ground 8, one end of diode two 28 is connected to the MCU controller 1, the high-voltage bus 4 is connected to the MCU controller 1, the high-voltage distribution output 7 is connected to the MCU controller 1, and one end of resistor five 20 is connected to the MCU controller 1. When output distribution is to be performed, the pre-charge control of the MCU controller 1 sends a high level to control the pre-charge control chip 21 to output a 12V voltage to the relay 10, and then the relay 10 controls the main circuit control chip to be turned on. At this time, the voltage of the high-voltage bus 4 charges the high-voltage distribution output 7 through the main circuit control chip 5 and resistor one 6 to realize the control of the pre-charge branch. During high-voltage distribution, the distribution switch is turned on with controllable voltage, which reduces the operation and maintenance costs, increases the reliability of equipment, and brings good economic benefits to the society.

[0030] Working principle: When output power distribution is to be carried out, the pre-charge control of the MCU controller 1 sends a high level to control the pre-charge control chip 21 to output a 12V voltage to the relay 10, and then the relay 10 controls the main circuit control chip 5 to be turned on. At this time, the voltage of the high-voltage bus 4 is charged to the high-voltage power distribution output 7 through the main circuit control chip 5 and the resistor 6. At the same time, the MCU controller 1 has been detecting the voltage of the high-voltage bus 4 and the voltage of the high-voltage power distribution output 7. The voltage of the high-voltage bus 4 is the highest voltage, and the voltage of the high-voltage power distribution output 7 slowly rises from 0V. When the MCU controller 1 detects that the voltage difference between the high-voltage bus 4 and the high-voltage power distribution output 7 is less than 30V (this value can be set according to the situation), the main circuit 2 control is turned on, and the main circuit 2 control sends a high level. At this time, the power tube 17 is turned on. , then the coil of relay 10 is energized, and all the current of high-voltage bus 4 flows from the normally open contact of relay 10 to the high-voltage distribution output 7. At the same time, the pre-charge control of MCU controller 1 sends a low level, the pre-charge control chip 21 is closed, the output relay 10 is low level, and the main circuit control chip 5 is controlled to be turned off. At this time, the voltage of high-voltage bus 4 cannot be charged to high-voltage distribution output 7 through the main circuit control chip 5 and resistor 6. When high-voltage power is distributed, the voltage of the distribution switch is controllable, the pre-charge branch is controllable, and the load fluctuation of the distribution output end does not affect the pre-charge branch, which increases the reliability and safety of the equipment, simplifies the control, shortens the production debugging time, etc., which can well reduce production R&D costs, reduce operation and maintenance costs, increase equipment reliability, and bring good economic benefits to society.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-voltage output distribution surge suppression control circuit structure, comprising an MCU controller (1), a main circuit (2), and a pre-charging circuit (3), characterized in that: The main circuit (2) comprises a high-voltage busbar (4) and a control power supply (14); the high-voltage busbar (4) is connected to a main circuit control chip (5); the main circuit control chip (5) is connected to a resistor 1 (6); the resistor 1 (6) is connected to a high-voltage power distribution output (7); one end of the resistor 1 (6) is connected to a ground (8); one end of the main circuit control chip (5) is connected to a resistor 2 (9); the resistor 2 (9) is connected to a relay (10); one end of the resistor 2 (9) is connected to a resistor 3 (11); the resistor 3 (11) is connected to X82 (12); one end of the resistor 3 (11) is connected to the ground (8); the high-voltage busbar (4) is connected to a normally open contact of a relay (10); one end of the normally open contact of the relay (10) is connected to the high-voltage power distribution output (7).

2. A high voltage output distribution surge suppression control circuit structure according to claim 1, characterized in that: The control power supply (14) is connected to a relay (10) coil, two ends of the relay (10) coil are connected to a diode 1 (16), one end of the diode 1 (16) is connected to a power tube (17), one end of the power tube (17) is connected to a ground (8), one end of the power tube (17) is connected to a capacitor 1 (18), the capacitor 1 (18) is connected to the ground (8), the capacitor 1 (18) is connected in parallel to a resistor 4 (19), and one end of the resistor 4 (19) is connected to a resistor 5 (20).

3. The high voltage output distribution surge suppression control circuit structure according to claim 1, characterized in that: The pre-charging circuit (3) comprises a pre-charging control chip (21), the CS terminal of the pre-charging control chip (21) is connected to a capacitor 2 (22), one end of the capacitor 2 (22) is connected to a COM terminal of the pre-charging control chip (21), the capacitor 2 (22) is connected to a capacitor 3 (23), one end of the capacitor 3 (23) is connected to a VO terminal of the pre-charging control chip (21), the capacitor 3 (23) is connected in parallel to a capacitor 4 (24), one end of the capacitor 4 (24) is connected to a ground (8), and one end of the capacitor 4 (24) is connected to a relay (10).

4. A high voltage output distribution surge suppression control circuit structure according to claim 3, characterized in that: The GND terminal of the pre-charge control chip (21) is connected to a capacitor five (25), one end of which is connected to the VIN terminal of the pre-charge control chip (21), the capacitor five (25) is connected in parallel to a capacitor six (26), the capacitor six (26) is connected to a control power supply (14), one end of which is connected to a ground (8), the Ctrl terminal of the pre-charge control chip (21) is connected to a resistor six (27), the resistor six (27) is connected to a diode two (28), one end of which is connected to a capacitor seven (29), and the capacitor seven (29) is connected to a ground (8).

5. A high voltage output distribution surge suppression control circuit structure according to claim 4, characterized in that: One end of the diode 2 (28) is connected to the MCU controller (1).

6. A high voltage output distribution surge suppression control circuit structure according to claim 1, characterized in that: The high-voltage busbar (4) is connected to the MCU controller (1), and the high-voltage power distribution output (7) is connected to the MCU controller (1).

7. A high voltage output distribution surge suppression control circuit structure according to claim 2, characterized in that: One end of the resistor five (20) is connected to the MCU controller (1).

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