A UPS power supply safety detection and control device

Abstract

The present invention discloses a UPS power supply safety detection control device, which relates to the technical field of UPS power supply, and includes an input control module for accessing electric energy, electric energy transmission and rectification; a current conversion control module for inversion and rectification; an output control module for electric energy transmission and power supply to the output module; a power supply detection module for performing AC power supply detection; a safety detection module for performing power supply detection on the electric energy rectified by the input control module and judging whether the input control module fails; a microcontroller module for signal reception and module control; a UPS control module for energy storage and discharge; and a bypass control module for electric energy transmission and regulation and power supply to the output module. The UPS power supply safety detection control device of the present invention can perform fault detection on the rectification part of the input control module, and can still meet the charging work of the device and disconnect the input control module when a fault occurs, and can also perform power failure detection, and provide uninterrupted power supply after power failure.

Description

Technical Field

[0001] The invention relates to the technical field of UPS power supply, in particular to a UPS power supply safety detection control device. Background Art

[0002] UPS power supply, or Uninterruptible Power Supply, is an uninterruptible power supply containing an energy storage device. The existing UPS power supply is generally composed of a rectifier, a battery, an inverter, a static switch and a control system, and a UPS power supply detection and control device composed of an optical coupler is used to perform power supply detection on the connected AC power. When there is power, the rectifier provides charging power to the battery. When power is off or the AC power is unstable, the inverter performs inversion processing on the battery to provide AC power. However, the existing UPS power supply detection and control device cannot effectively detect the rectifier of the UPS power supply when the battery is performing energy storage work. When the rectifier of the UPS power supply fails or breaks down, it will not be able to provide DC power normally, which is easy to damage the battery. When the rectifier of the UPS power supply fails, the control system will stop the energy storage work of the battery. If it is not repaired in time, it will not be able to meet the charging demand of the battery. Therefore, it needs to be improved. Summary of the invention

[0003] The embodiment of the present invention provides a UPS power supply safety detection control device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A UPS power supply safety detection control device, comprising: an input control module, a micro control module, a current conversion control module, an output control module, an output module, a power supply detection module, a safety detection module, a UPS control module and a bypass control module;

[0006] An input control module, connected to the microcontroller module, for receiving AC power, for receiving a first control signal output by the microcontroller module and controlling the transmission and rectification of power;

[0007] a current conversion control module connected to the input control module, the microcontrol module and the output control module, for receiving the second pulse signal output by the microcontrol module and performing inversion processing on the electric energy output by the UPS control module, for outputting the first electric energy, and for rectifying the electric energy transmitted by the output control module and outputting the second electric energy;

[0008] an output control module, connected to the microcontrol module, the output module and the bypass control module, for receiving the second control signal output by the microcontrol module and transmitting the first electric energy to the output module, and for receiving the first switching signal output by the safety detection module and transmitting the electric energy output by the bypass control module to the current conversion control module;

[0009] An output module, connected to the bypass control module, and used to receive the electric energy output by the bypass control module and the output control module;

[0010] A power supply detection module, connected to the input control module, for performing isolated power supply detection on the AC power connected to the input control module and outputting a first detection signal when there is power, and outputting a second detection signal when there is no power;

[0011] A safety detection module, connected to the input control module, the power supply detection module and the micro-control module, for performing isolated power supply detection on the electric energy output by the input control module after rectification and outputting a second detection signal, for receiving the first control signal and the first detection signal output by the micro-control module and determining whether a breakdown fault occurs in the input control module, and after a breakdown fault occurs, self-lockingly outputting a first switching signal;

[0012] A microcontrol module, connected to the power supply detection module, the UPS control module and the bypass control module, for receiving a first detection signal and outputting a first control signal, a third control signal and a first pulse signal, the third control signal and the first pulse signal respectively controlling the power transmission and regulation of the bypass control module, for receiving a first switching signal and outputting a second control signal to control the power transmission of the output control module and stop outputting the first control signal, for receiving a second detection signal and outputting a second pulse signal and a third pulse signal, for outputting a fourth pulse signal and controlling the energy storage of the UPS control module, the second pulse signal and the third pulse signal respectively controlling the inversion of the current conversion control module and the discharge of the UPS control module;

[0013] A UPS control module, connected to the input control module and the current conversion control module, for receiving the fourth pulse signal and storing the electric energy output by the input control module and the second electric energy, and for receiving the third pulse signal and releasing the stored electric energy;

[0014] The bypass control module is connected to the input control module and is used to receive the third control signal and the first pulse signal and to transmit and regulate the input AC power.

[0015] As a further solution of the present invention: the input control module includes a power input interface, a first rectifier switch, a first rectifier device and a first diode; the microcontroller module includes a first processor;

[0016] Preferably, the first end of the power input interface is connected to the input end of the first rectifier switch, the output end of the first rectifier switch and the second end of the power input interface are respectively connected to the first input end and the second input end of the first rectifier device, the first output end of the first rectifier device is connected to the anode of the first diode and the safety detection module, the second output end of the first rectifier device is grounded, and the cathode of the first diode is connected to the UPS control module and the current conversion control module.

[0017] As a further solution of the present invention: the UPS control module includes a fifth control tube, a sixth control tube and an energy storage device;

[0018] Preferably, the collector of the fifth control tube is connected to the cathode of the first diode, the emitter of the fifth control tube is connected to the emitter of the sixth control tube, the collector of the sixth control tube is connected to the first end of the energy storage device, the second end of the energy storage device is connected to the second output end of the first rectifier device, and the gate of the fifth control tube and the gate of the sixth control tube are respectively connected to the IO11 end and IO12 end of the first processor.

[0019] As a further solution of the present invention: the current conversion control module includes a first control tube, a second control tube, a third control tube and a fourth control tube; the output control module includes a first output device, a second diode and a third diode; the output module includes an output port;

[0020] Preferably, the collector of the first control tube is connected to the collector of the third control tube and the cathode of the first diode, the emitter of the first control tube is connected to the collector of the second control tube and the first moving end of the first output device, the emitter of the third control tube is connected to the collector of the fourth control tube and the second moving end of the first output device, the emitter of the second control tube and the emitter of the fourth control tube are both connected to the second output end of the first rectifier device, the gate of the first control tube, the gate of the second control tube, the gate of the third control tube and the gate of the fourth control tube are respectively connected to the IO5 end, IO6 end, IO7 end and IO8 end of the first processor, the first fixed end and the second fixed end of the first output device are respectively connected to the first end and the second end of the output port, the control end of the first output device is connected to the cathode of the second diode and the cathode of the third diode, the anode of the third diode is connected to the IO10 end of the first processor and the safety detection module, and the anode of the second diode is connected to the IO9 end of the first processor.

[0021] As a further solution of the present invention: the bypass control module includes a first bypass switch, a first static switch and a second static switch;

[0022] Preferably, the input end of the first bypass switch is connected to the first end of the power input interface, the output end of the first bypass switch is connected to the first end of the first static switch, the first end of the second bypass switch is connected to the second end of the power input interface, the second end of the first bypass switch and the second end of the second bypass switch are respectively connected to the first end and the second end of the output port, the control end of the first bypass switch is connected to the IO3 end of the first processor, and the control end of the first static switch and the control end of the second static switch are both connected to the IO4 end of the first processor.

[0023] As a further solution of the present invention: the power supply detection module includes a first power supply, a first optical coupler, a second resistor, a first resistor and a third resistor;

[0024] Preferably, the first end of the first optocoupler is connected to the first end of the power input interface through the first resistor, the second end of the first optocoupler is connected to the second end of the power input interface through the third resistor, the third end of the first optocoupler is connected to the first power supply, and the fourth end of the first optocoupler is connected to the IO2 end of the first processor and grounded through the second resistor.

[0025] As a further solution of the present invention: the safety detection module includes a fourth resistor, a second optical coupler, a second power supply, a fifth resistor, a first inverter, a first logic device, a fourth diode and a first switch tube;

[0026] Preferably, the first end of the second optocoupler is connected to the first output end of the first rectifier device through a fourth resistor, the second end of the second optocoupler is grounded, the third end of the second optocoupler is connected to the second power supply and the collector of the first switch tube, the fourth end of the second optocoupler is connected to the input end of the first inverter and is grounded through a fifth resistor, the output end of the first inverter is connected to the cathode of the fourth diode and the IN1 end of the first logic device, the IN2 end of the first logic device is connected to the fourth end of the first optocoupler, the OUT end of the first logic device is connected to the IO10 end of the first processor, the anode of the third diode and the anode of the fourth diode, the VCC end of the first logic device is connected to the emitter of the first switch tube, and the base of the first switch tube is connected to the IO1 end of the first processor.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the UPS power supply safety detection control device of the present invention controls the input control module and the bypass control module by the microcontrol module to supply power to the output module normally, controls the UPS control module to perform energy storage work, and at the same time, the power supply detection module cooperates with the safety detection module to perform breakdown fault detection on the rectifier part of the input control module. When a breakdown fault occurs, the microcontrol module controls the output control module to cooperate with the current conversion control module to rectify the electric energy output by the bypass control module, so as to provide charging electric energy for the UPS control module to meet the electric energy required for charging the UPS control module, and at the same time disconnects the input control module to supply power to the UPS control module, thereby improving the power supply safety. When the power supply detection module detects that the input control module loses power, the UPS control module cooperates with the current conversion control module and the output control module to provide uninterrupted power supply to the output module, thereby improving the power supply efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 A schematic block diagram of a UPS power supply safety detection and control device provided by an example of the present invention.

[0030] Figure 2 A circuit diagram of a UPS power supply safety detection control device provided by an example of the present invention.

[0031] Figure 3 A connection circuit diagram of a UPS control module provided by an example of the present invention.

[0032] Figure 4 A connection circuit diagram of a safety detection module provided for an example of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In one embodiment, see Figure 1, a UPS power supply safety detection control device, comprising: an input control module 1, a micro control module 2, a current conversion control module 3, an output control module 4, an output module 5, a power supply detection module 6, a safety detection module 7, a UPS control module 8 and a bypass control module 9;

[0035] Specifically, the input control module 1 is connected to the micro-control module 2, and is used to access the AC power, receive the first control signal output by the micro-control module 2, and control the transmission and rectification of the power;

[0036] The current conversion control module 3 is connected to the input control module 1, the micro-control module 2 and the output control module 4, and is used to receive the second pulse signal output by the micro-control module 2 and perform inversion processing on the electric energy output by the UPS control module 8, and is used to output the first electric energy, and is used to perform rectification processing on the electric energy transmitted by the output control module 4 and output the second electric energy;

[0037] The output control module 4 is connected to the micro-control module 2, the output module 5 and the bypass control module 9, and is used to receive the second control signal output by the micro-control module 2 and transmit the first electric energy to the output module 5, and is used to receive the first switching signal output by the safety detection module 7 and transmit the electric energy output by the bypass control module 9 to the current conversion control module 3;

[0038] An output module 5, connected to the bypass control module 9, and used to receive the electric energy output by the bypass control module 9 and the output control module 4;

[0039] A power supply detection module 6, connected to the input control module 1, is used to perform isolated power supply detection on the AC power connected to the input control module 1 and output a first detection signal when there is power, and output a second detection signal when there is no power;

[0040] The safety detection module 7 is connected to the input control module 1, the power supply detection module 6 and the micro-control module 2, and is used to perform isolated power supply detection on the electric energy output by the input control module 1 after rectification and output a second detection signal, and is used to receive the first control signal and the first detection signal output by the micro-control module 2 and determine whether a breakdown fault occurs in the input control module 1, and after a breakdown fault occurs, self-lock and output a first switching signal;

[0041] The microcontrol module 2 is connected with the power supply detection module 6, the UPS control module 8 and the bypass control module 9, and is used to receive the first detection signal and output the first control signal, the third control signal and the first pulse signal, respectively controlling the power transmission and regulation of the bypass control module 9 by the third control signal and the first pulse signal, and is used to receive the first switching signal and output the second control signal to control the power transmission of the output control module 4 and stop outputting the first control signal, and is used to receive the second detection signal and output the second pulse signal and the third pulse signal, and is used to output the fourth pulse signal and control the energy storage of the UPS control module 8, and is used to control the inversion of the converter control module 3 and the discharge of the UPS control module 8 by the second pulse signal and the third pulse signal;

[0042] A UPS control module 8 is connected to the input control module 1 and the current conversion control module 3, and is used to receive the fourth pulse signal and store the electric energy output by the input control module 1 and the second electric energy, and is used to receive the third pulse signal and release the stored electric energy;

[0043] The bypass control module 9 is connected to the input control module 1 and is used to receive the third control signal and the first pulse signal and to transmit and regulate the input AC power.

[0044] In a specific embodiment, the input control module 1 may adopt an input control circuit composed of a power input interface, a rectifier switch, a rectifier device, etc., which may be connected to AC power and perform power transmission control and power rectification processing; the microcontroller module 2 may adopt a microcontroller circuit composed of a single-chip microcomputer, which integrates many components such as an arithmetic unit, a controller, a memory, and an input / output device to realize functions such as signal processing, data storage, module control, and timing control; the current conversion control module 3 may adopt a current conversion control circuit composed of four groups of IGBTs with diodes, which may perform inversion regulation and rectification processing on the input power; the output control module 4 may adopt an output control circuit composed of an output switch and a diode to transmit power, and the transmission state of power is controlled by the microcontroller module 2 and the safety detection module 7; the output module 5 may adopt an output port composed of an output port, Receive the electric energy output by the bypass control module 9 and the output control module 4; the power supply detection module 6 can adopt a power supply detection circuit composed of a photoelectric coupler, a resistor, etc. to perform isolated AC power supply detection on the AC power connected to the input control module 1; the safety detection module 7 can adopt a safety detection circuit composed of a resistor, a photoelectric coupler, an inverter, a logic chip, etc., to perform isolated power supply detection on the electric energy output by the rectifier part of the input control module 1, and cooperate with the detection of the power supply detection module 6 to determine whether the rectifier part of the input control module 1 is faulty, that is, breakdown or circuit breaker fault; the UPS control module 8 can adopt a UPS control circuit composed of an IGBT and an energy storage device to perform energy storage and discharge; the bypass control module 9 can adopt a bypass control circuit composed of a bypass switch and a static switch to transmit and regulate electric energy.

[0045] In another embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 4 , the input control module 1 includes a power input interface, a first rectifier switch S1, a first rectifier device T1 and a first diode D1; the micro control module 2 includes a first processor U1;

[0046] Specifically, the first end of the power input interface is connected to the input end of the first rectifier switch S1, the output end of the first rectifier switch S1 and the second end of the power input interface are respectively connected to the first input end and the second input end of the first rectifier device T1, the first output end of the first rectifier device T1 is connected to the anode of the first diode D1 and the safety detection module 7, the second output end of the first rectifier device T1 is grounded, and the cathode of the first diode D1 is connected to the UPS control module 8 and the converter control module 3.

[0047] In a specific embodiment, the first rectifier switch S1 may be composed of a circuit breaker, and is controlled by the first processor U1 through the IO1 terminal; the first processor U1 may be a STM32 single-chip microcomputer.

[0048] Further, the UPS control module 8 includes a fifth control tube Q5, a sixth control tube Q6 and an energy storage device;

[0049] Specifically, the collector of the fifth control tube Q5 is connected to the cathode of the first diode D1, the emitter of the fifth control tube Q5 is connected to the emitter of the sixth control tube Q6, the collector of the sixth control tube Q6 is connected to the first end of the energy storage device, the second end of the energy storage device is connected to the second output end of the first rectifier device T1, and the gate of the fifth control tube Q5 and the gate of the sixth control tube Q6 are respectively connected to the IO11 end and IO12 end of the first processor U1.

[0050] In a specific embodiment, the fifth control tube Q5 and the sixth control tube Q6 can both be IGBTs with diodes. The fifth control tube Q5 controls the charging of the energy storage device, and the sixth control tube Q6 controls the discharging of the energy storage device. The energy storage device can be a battery.

[0051] Further, the current conversion control module 3 includes a first control tube Q1, a second control tube Q2, a third control tube Q3 and a fourth control tube Q4; the output control module 4 includes a first output device K1, a second diode D1 and a third diode D3; the output module 5 includes an output port;

[0052] Specifically, the collector of the first control tube Q1 is connected to the collector of the third control tube Q3 and the cathode of the first diode D1, the emitter of the first control tube Q1 is connected to the collector of the second control tube Q2 and the first moving end of the first output device K1, the emitter of the third control tube Q3 is connected to the collector of the fourth control tube Q4 and the second moving end of the first output device K1, the emitter of the second control tube Q2 and the emitter of the fourth control tube Q4 are both connected to the second output end of the first rectifier T1, the gate of the first control tube Q1, the gate of the second control tube Q2, the gate of the third control tube Q3 and the gate of the fourth control tube Q4 are respectively connected to the IO5 end, IO6 end, IO7 end and IO8 end of the first processor U1, the first fixed end and the second fixed end of the first output device K1 are respectively connected to the first end and the second end of the output port, the control end of the first output device K1 is connected to the cathode of the second diode D1 and the cathode of the third diode D3, the anode of the third diode D3 is connected to the IO10 end of the first processor U1 and the safety detection module 7, and the anode of the second diode D1 is connected to the IO9 end of the first processor U1.

[0053] In a specific embodiment, the first control tube Q1, the second control tube Q2, the third control tube Q3 and the fourth control tube Q4 can all be IGBTs with diodes, and four groups of IGBTs are used for inverter regulation, and the diodes carried are used for rectification; the first output device K1 can be composed of a relay and a relay switch, and the first output device K1 is a double-pole double-throw normally open switch, which can be controlled by the IO9 terminal of the first processor U1 and the safety detection module 7; the output port is an electric energy output terminal, which provides AC power to the connected load.

[0054] Further, the bypass control module 9 includes a first bypass switch S2, a first static switch J1 and a second static switch J2;

[0055] Specifically, the input end of the first bypass switch S2 is connected to the first end of the power input interface, the output end of the first bypass switch S2 is connected to the first end of the first static switch J1, the first end of the second bypass switch is connected to the second end of the power input interface, the second end of the first bypass switch S2 and the second end of the second bypass switch are respectively connected to the first end and the second end of the output port, the control end of the first bypass switch S2 is connected to the IO3 end of the first processor U1, and the control end of the first static switch J1 and the control end of the second static switch J2 are both connected to the IO4 end of the first processor U1.

[0056] In a specific embodiment, the first bypass switch S2 may be a circuit breaker controlled by the IO3 terminal of the first processor U1; the first static switch J1 and the second static switch J2 may both be composed of two groups of thyristors for power regulation and power-off control.

[0057] Further, the power supply detection module 6 includes a first power supply VCC1, a first optical coupler U2, a second resistor R2, a first resistor R1 and a third resistor R3;

[0058] Specifically, the first end of the first optocoupler U2 is connected to the first end of the power input interface through the first resistor R1, the second end of the first optocoupler U2 is connected to the second end of the power input interface through the third resistor R3, the third end of the first optocoupler U2 is connected to the first power supply VCC1, and the fourth end of the first optocoupler U2 is connected to the IO2 end of the first processor U1 and is grounded through the second resistor R2.

[0059] In a specific embodiment, the first optical coupler U2 may be an EL814 bidirectional optical coupler to detect input AC power.

[0060] Further, the safety detection module 7 includes a fourth resistor R4, a second optical coupler U3, a second power supply VCC2, a fifth resistor R5, a first inverter U4, a first logic device U5, a fourth diode D4 and a first switch tube VT1;

[0061] Specifically, the first end of the second optocoupler U3 is connected to the first output end of the first rectifier T1 through the fourth resistor R4, the second end of the second optocoupler U3 is grounded, the third end of the second optocoupler U3 is connected to the second power supply VCC2 and the collector of the first switch tube VT1, the fourth end of the second optocoupler U3 is connected to the input end of the first inverter U4 and is grounded through the fifth resistor R5, the output end of the first inverter U4 is connected to the cathode of the fourth diode D4 and the IN1 end of the first logic device U5, the IN2 end of the first logic device U5 is connected to the fourth end of the first optocoupler U2, the OUT end of the first logic device U5 is connected to the IO10 end of the first processor U1, the anode of the third diode D3 and the anode of the fourth diode D4, the VCC end of the first logic device U5 is connected to the emitter of the first switch tube VT1, and the base of the first switch tube VT1 is connected to the IO1 end of the first processor U1.

[0062] In a specific embodiment, the second optocoupler U3 may use a PC817 unidirectional photoelectric coupler; the first inverter U4 may use a NOT gate logic chip; the first logic device U5 may use an AND gate logic chip, and cooperate with the fourth diode D4 to perform high-level self-locking; the first switch tube VT1 may use an NPN transistor to control the operation of the first logic device U5.

[0063] The present embodiment is a UPS power supply safety detection control device, which is connected to AC power through the power input interface, and the first optical coupler U2 isolates the connected AC power for power failure detection. When no power failure occurs, the first optical coupler U2 is turned on, and the IO2 end of the first processor U1 and the IN2 end of the first logic device U5 are both high level, so that the IO1 end and IO3 end of the first processor U1 respectively control the operation of the first rectifier switch S1 and the first bypass switch S2, and the IO4 end of the first processor U1 adjusts the conduction degree of the first static switch J1 and the second static switch J2, and then performs AC voltage stabilization on the power transmitted by the first bypass switch S2. The AC power transmitted by the first rectifying switch S1 will be rectified by the first rectifying device T1, and the conduction of the fifth control tube Q5 is controlled by the IO11 terminal of the first processor U1 to provide charging power for the energy storage device. At the same time, the third optical coupler isolates and detects the DC power output by the first rectifying device T1. If the first rectifying device T1 is broken down, the rectification work cannot be carried out normally, and the transmitted power will have an AC component, which is easy to cause damage to the energy storage device. In addition, the third optical coupler will not be turned on, and the first inverter U4 makes the first logic device U5 In the case where a high level appears at the IN1 end of the first processor U1, the first logic device U5 will be self-locked and output a high level from the OUT end, controlling the first output device K1 to close, and the electric energy transmitted by the first static switch J1 and the second static switch J2 will be rectified by the diodes carried by the first control tube Q1, the second control tube Q2, the third control tube Q3 and the fourth control tube Q4, and then the energy storage device is powered by the fifth control tube Q5, and the IO10 end of the first processor U1 becomes a high level, so that the IO1 end of the first processor U1 stops controlling the closing of the first rectifier switch S1. When the AC power connected to the power input interface is powered off, the IO of the first processor U1 2 is at a low level, the IO3 end of the first processor U1 stops controlling the first bypass switch S2, the IO4 end of the first processor U1 stops controlling the operation of the first static switch J1 and the second static switch J2, and at the same time, the IO12 end of the first processor U1 controls the conduction of the sixth control tube Q6, the energy storage device performs discharge operation, and the IO5 end, IO6 end, IO7 end and IO8 end of the first processor U1 respectively control the inversion operation of the first control tube Q1, the second control tube Q2, the third control tube Q3 and the fourth control tube Q4, and the IO9 end of the first processor U1 controls the first output device K1 to be closed, so as to provide AC power to the output port.

[0064] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A UPS power supply safety detection and control device, characterized in that: The UPS power supply safety detection control device comprises: an input control module, a micro control module, a current conversion control module, an output control module, an output module, a power supply detection module, a safety detection module, a UPS control module and a bypass control module; The input control module is connected to the micro-control module, and is used to access the AC power, receive the first control signal output by the micro-control module, and control the transmission and rectification of the power; The current conversion control module is connected to the input control module, the micro control module and the output control module, and is used to receive the second pulse signal output by the micro control module and perform inversion processing on the electric energy output by the UPS control module, and to output the first electric energy, and to perform rectification processing on the electric energy transmitted by the output control module and output the second electric energy; The output control module is connected to the micro-control module, the output module and the bypass control module, and is used to receive the second control signal output by the micro-control module and transmit the first electric energy to the output module, and is used to receive the first switching signal output by the safety detection module and transmit the electric energy output by the bypass control module to the current conversion control module; The output module is connected to the bypass control module and is used to receive the electric energy output by the bypass control module and the output control module; The power supply detection module is connected to the input control module and is used to perform isolated power supply detection on the AC power connected to the input control module and output a first detection signal when there is power, and output a second detection signal when there is no power; The safety detection module is connected to the input control module, the power supply detection module and the micro-control module, and is used to perform isolated power supply detection on the electric energy output by the input control module after rectification and output a second detection signal, and is used to receive the first control signal and the first detection signal output by the micro-control module and determine whether a breakdown fault occurs in the input control module, and after a breakdown fault occurs, self-lock and output a first switching signal; The microcontrol module is connected to the power supply detection module, the UPS control module and the bypass control module, and is used to receive the first detection signal and output the first control signal, the third control signal and the first pulse signal, respectively controlling the power transmission and regulation of the bypass control module by the third control signal and the first pulse signal, and is used to receive the first switching signal and output the second control signal to control the power transmission of the output control module and stop outputting the first control signal, and is used to receive the second detection signal and output the second pulse signal and the third pulse signal, and is used to output the fourth pulse signal and control the energy storage of the UPS control module, and respectively control the inversion of the current conversion control module and the discharge of the UPS control module by the second pulse signal and the third pulse signal; The UPS control module is connected to the input control module and the current conversion control module, and is used to receive the fourth pulse signal and store the electric energy output by the input control module and the second electric energy, and is used to receive the third pulse signal and release the stored electric energy; The bypass control module is connected to the input control module, and is used to receive the third control signal and the first pulse signal and to transmit and regulate the input AC power.

2. A UPS power supply safety detection and control device according to claim 1, characterized in that: The input control module includes a power input interface, a first rectifier switch, a first rectifier device and a first diode; the microcontroller module includes a first processor; The first end of the power input interface is connected to the input end of the first rectifier switch, the output end of the first rectifier switch and the second end of the power input interface are respectively connected to the first input end and the second input end of the first rectifier device, the first output end of the first rectifier device is connected to the anode of the first diode and the safety detection module, the second output end of the first rectifier device is grounded, and the cathode of the first diode is connected to the UPS control module and the current conversion control module.

3. A UPS power supply safety detection and control device according to claim 2, characterized in that: The UPS control module includes a fifth control tube, a sixth control tube and an energy storage device; The collector of the fifth control tube is connected to the cathode of the first diode, the emitter of the fifth control tube is connected to the emitter of the sixth control tube, the collector of the sixth control tube is connected to the first end of the energy storage device, the second end of the energy storage device is connected to the second output end of the first rectifier device, and the gate of the fifth control tube and the gate of the sixth control tube are respectively connected to the IO11 end and IO12 end of the first processor.

4. A UPS power supply safety detection and control device according to claim 3, characterized in that: The variable current control module includes a first control tube, a second control tube, a third control tube and a fourth control tube; the output control module includes a first output device, a second diode and a third diode; the output module includes an output port; The collector of the first control tube is connected to the collector of the third control tube and the cathode of the first diode, the emitter of the first control tube is connected to the collector of the second control tube and the first moving end of the first output device, the emitter of the third control tube is connected to the collector of the fourth control tube and the second moving end of the first output device, the emitter of the second control tube and the emitter of the fourth control tube are both connected to the second output end of the first rectifier, the gate of the first control tube, the gate of the second control tube, the gate of the third control tube and the gate of the fourth control tube are respectively connected to the IO5 end, IO6 end, IO7 end and IO8 end of the first processor, the first fixed end and the second fixed end of the first output device are respectively connected to the first end and the second end of the output port, the control end of the first output device is connected to the cathode of the second diode and the cathode of the third diode, the anode of the third diode is connected to the IO10 end of the first processor and the safety detection module, and the anode of the second diode is connected to the IO9 end of the first processor.

5. A UPS power supply safety detection and control device according to claim 4, characterized in that: The bypass control module includes a first bypass switch, a first static switch and a second static switch; The input end of the first bypass switch is connected to the first end of the power input interface, the output end of the first bypass switch is connected to the first end of the first static switch, the first end of the second bypass switch is connected to the second end of the power input interface, the second end of the first bypass switch and the second end of the second bypass switch are respectively connected to the first end and the second end of the output port, the control end of the first bypass switch is connected to the IO3 end of the first processor, and the control end of the first static switch and the control end of the second static switch are both connected to the IO4 end of the first processor.

6. A UPS power supply safety detection and control device according to claim 5, characterized in that: The power supply detection module includes a first power supply, a first optical coupler, a second resistor, a first resistor and a third resistor; The first end of the first optocoupler is connected to the first end of the power input interface through the first resistor, the second end of the first optocoupler is connected to the second end of the power input interface through the third resistor, the third end of the first optocoupler is connected to the first power supply, and the fourth end of the first optocoupler is connected to the IO2 end of the first processor and grounded through the second resistor.

7. A UPS power supply safety detection and control device according to claim 6, characterized in that: The safety detection module includes a fourth resistor, a second optical coupler, a second power supply, a fifth resistor, a first inverter, a first logic device, a fourth diode and a first switch tube; The first end of the second optocoupler is connected to the first output end of the first rectifier through a fourth resistor, the second end of the second optocoupler is grounded, the third end of the second optocoupler is connected to the second power supply and the collector of the first switch tube, the fourth end of the second optocoupler is connected to the input end of the first inverter and is grounded through a fifth resistor, the output end of the first inverter is connected to the cathode of the fourth diode and the IN1 end of the first logic device, the IN2 end of the first logic device is connected to the fourth end of the first optocoupler, the OUT end of the first logic device is connected to the IO10 end of the first processor, the anode of the third diode and the anode of the fourth diode, the VCC end of the first logic device is connected to the emitter of the first switch tube, and the base of the first switch tube is connected to the IO1 end of the first processor.

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