Direct-current emergency power supply EPS device

Abstract

A direct-current emergency power supply EPS device comprises a cabinet body, the input end of the cabinet body is electrically connected with the output end of an alternating-current power supply, the output end of the cabinet body is electrically connected with the input end of an external load, a high-frequency rectification module used for converting the alternating-current power supply is arranged in the cabinet body, and the input end of the high-frequency rectification module is electrically connected with the output end of the alternating-current power supply. A circuit breaking module used for controlling an external load is arranged between the output end of the high-frequency rectification module and the input end of the external load, a battery module used for continuously supplying power to the external load when the alternating-current power supply is abnormal is arranged beside the high-frequency rectification module, and the input end of the battery module is electrically connected with the output end of the alternating-current power supply. The output end of the battery module is electrically connected with the input end of an external load through a conversion circuit, and a control module is further arranged in the cabinet body. According to the utility model, the problem of high cost of the traditional UPS system in the prior art is solved. The device has the advantages of wide application range, strong load adaptability, convenience in installation, high efficiency and the like.

Description

Technical Field

[0001] This utility model relates to the field of power supply equipment, and more specifically, to a DC emergency power supply EPS device. Background Technology

[0002] Currently, a method for operating an uninterruptible power supply (UPS) system is disclosed on the Chinese patent website (publication number CN104854468B). The method involves: activating an idle state of a UPS module included in the UPS system, and providing UPS module test inputs to the UPS module in the idle state. A UPS module test response to the UPS module test inputs can be provided from the UPS module in the idle state. The UPS module test response can be compared with a predetermined UPS module test response, and in response to determining that the difference between the UPS module test response and the predetermined UPS module test response is greater than a threshold, the UPS module can be identified as a potentially faulty UPS module.

[0003] While the method for operating an uninterruptible power supply (UPS) system in the aforementioned patent has the advantage of fast response, the UPS system needs to operate continuously for a long time to keep the load working without interruption, which is costly. Utility Model Content

[0004] In order to overcome the problem of high cost of traditional UPS systems in the prior art, this utility model provides a DC emergency power supply EPS device with the advantage of low operating cost.

[0005] This utility model discloses a DC emergency power supply (EPS) device, comprising a cabinet. The input terminal of the cabinet is electrically connected to the AC power output terminal, and the output terminal of the cabinet is electrically connected to the input terminal of an external load. The cabinet contains a high-frequency rectifier module for converting the AC power, with its input terminal electrically connected to the AC power output terminal. A circuit breaker module for controlling the external load is located between the output terminal of the high-frequency rectifier module and the input terminal of the external load. Next to the high-frequency rectifier module is a battery module for continuing to supply power to the external load when the AC power supply is abnormal. The input terminal of the battery module is electrically connected to the AC power output terminal, and its output terminal is electrically connected to the input terminal of the external load via a conversion circuit. The cabinet also contains a control module, with the monitoring terminals of the high-frequency rectifier module, the external load, the circuit breaker module, the battery module, and the conversion circuit electrically connected to the control module.

[0006] Preferably, the high-frequency rectification module includes an air switch QA1, a high-frequency rectifier CV1, a high-frequency rectifier CV2, a high-frequency rectifier CV3, a circuit breaker QF1, a circuit breaker QF2, and a circuit breaker QF3. One end of the circuit breaker QF1 is electrically connected to one end of the air switch QA1, and the other end of the air switch QA1 is electrically connected to the AC power output terminal. The other end of the circuit breaker QF1 is electrically connected to the input terminal of the high-frequency rectifier CV1. One end of the circuit breaker QF2 is electrically connected to one end of the air switch QA1, and the other end of the circuit breaker QF2 is electrically connected to the input terminal of the high-frequency rectifier CV2. One end of the circuit breaker QF3 is electrically connected to one end of the air switch QA1, and the other end of the circuit breaker QF3 is electrically connected to the output terminal of the high-frequency rectifier CV3. The output terminal of the high-frequency rectifier CV1 is electrically connected to the other ends of both the high-frequency rectifier CV2 and the high-frequency rectifier CV3.

[0007] Preferably, the circuit breaker module includes circuit breaker 1QF1, circuit breaker 2QF1, circuit breaker 1QF2, circuit breaker 2QF2, circuit breaker 1QF3, circuit breaker 2QF3, circuit breaker 1QF4, circuit breaker 2QF4, current transformer 1CT1, current transformer 2CT1, current transformer 1CT2, current transformer 2CT2, current transformer 1CT3, current transformer 2CT3, current transformer 1CT4, and current transformer 2CT4. One end of circuit breaker 1QF1 is electrically connected to one end of circuit breaker 1QF2, one end of circuit breaker 1QF3, and one end of circuit breaker 1QF4, respectively. One end of circuit breaker 2QF1 is electrically connected to one end of circuit breaker 2QF2, one end of circuit breaker 2QF3, and one end of circuit breaker 2QF4, respectively. The other ends of circuit breaker 1QF1, 1QF1, 1QF2, 2QF2, and 1QF4 are also electrically connected. The other ends of QF3, 2QF3, 1QF4, and 2QF4 are electrically connected to external loads respectively. Current transformer 1CT1 is sleeved on the conductor between circuit breaker 1QF1 and the external load. Current transformer 2CT1 is sleeved on the conductor between circuit breaker 2QF1 and the external load. Current transformer 1CT2 is sleeved on the conductor between circuit breaker 1QF2 and the external load. Current transformer 2CT2 is sleeved on the conductor between circuit breaker 2QF2 and the external load. Current transformer 1CT3 is sleeved on the conductor between circuit breaker 1QF3 and the external load. Current transformer 2CT3 is sleeved on the conductor between circuit breaker 2QF3 and the external load. Current transformer 1CT4 is sleeved on the conductor between circuit breaker 1QF4 and the external load. Current transformer 2CT4 is sleeved on the conductor between circuit breaker 2QF4 and the external load.

[0008] Preferably, the switching circuit includes a circuit breaker QF5, a current sensor LE2, a switch KM1, and a switch KM2. One end of the circuit breaker QF5 is electrically connected to the output terminal of the high-frequency rectifier CV1. The other end of the circuit breaker QF5 is electrically connected to one end of the switch KM1 and one end of the switch KM2. The current sensor LE2 is sleeved on the wire connecting the other end of the circuit breaker QF5 and one end of the switch KM1. The other end of the switch KM1 is electrically connected to one end of the circuit breaker 1QF1, and the other end of the switch KM2 is electrically connected to one end of the circuit breaker 2QF1.

[0009] Preferably, the battery module includes a circuit breaker QF4, a battery BAT, a current sensor LE1, a DC / DC converter BH1, a high-frequency rectifier CV4, and a battery detector. The input terminal of the high-frequency rectifier CV4 is electrically connected to one end of the circuit breaker QF4, and the other end of the circuit breaker QF4 is electrically connected to one end of the air switch QA1. The output terminal of the high-frequency rectifier CV4 is electrically connected to the charging terminal of the battery BAT and the input terminal of the DC / DC converter BH1, respectively. The current sensor LE1 is sleeved on the guide between the battery BAT and the DC / DC converter BH1. The detection terminal of the battery detector is electrically connected to the measured terminal of the battery BAT. The output terminal of the DC / DC converter BH1 is electrically connected to one end of the circuit breaker QF5.

[0010] Preferably, the control module includes a DC monitor JK, an automation controller BAS, a switch detector, an insulation detector, and a display for showing the type of fault. The signal output terminal of the battery detector is electrically connected to the signal input terminal of the DC monitor JK. The detection points of the switch detector are electrically connected to the test points of circuit breakers 1QF1, 2QF1, 1QF2, 2QF2, 1QF3, 2QF3, 1QF4, and 2QF4, respectively. The signal input terminal of the insulation detector is connected to the signal output terminal of the current transformer 1CT1, the circuit breaker JK, and the circuit breaker JK. The signal output terminals of current transformer 2CT1, current transformer 1CT2, current transformer 2CT2, current transformer 1CT3, current transformer 2CT3, current transformer 1CT4, current transformer 2CT4, current sensor LE1, and current sensor LE2 are electrically connected. The signal output terminal of the DC monitor JK is electrically connected to the signal input terminal of the automation controller BAS and the signal input terminal of the display, respectively. The control terminals of switch KM1 and switch KM2 are electrically connected to the signal output terminals of the automation controller BAS, respectively.

[0011] Working principle:

[0012] When the mains power is normal, switch KM1 is closed and switch KM2 is open. At this time, the mains power supplies the external load and performs mains power detection and battery charging management. After high-frequency rectification, the output DC power supplies the external load and simultaneously provides power to charge the battery until it is fully charged. The charging circuit will automatically stop charging after the battery is fully charged, improving economic efficiency.

[0013] When the AC power supply fails or the high-frequency rectifier is under maintenance, the BAS (Battery Automation System) controller will open switch KM1 and close switch KM2, then start the battery to discharge. After passing through a DC / DC converter, the discharged DC power will supply power to the external load. The battery capacity is sufficient to meet the power requirements of the backup emergency load after the AC power fails.

[0014] This invention establishes a power monitoring system to collect the operating status and data of each unit within the system. The display shows the system's main wiring diagram, operating conditions, and information, including alarm information, battery temperature, internal resistance, current, voltage detection and alarm information, and circuit meter readings.

[0015] The BAS (Balance of Automation) controller provides real-time control of the entire system and can also be remotely monitored by a host computer via a standard communication interface, enabling remote control, telemetry, remote adjustment, and remote signaling functions to meet the requirements of unmanned operation.

[0016] This utility model has the following advantages: wide applicability, strong load adaptability, convenient installation, and high efficiency. Attached Figure Description

[0017] Appendix Figure 1 This is the circuit diagram of this utility model.

[0018] Appendix Figure 2 This is a circuit diagram of the high-frequency rectifier module of this utility model.

[0019] Appendix Figure 3 This is a circuit diagram of the battery module of this utility model.

[0020] Appendix Figure 4 This is a circuit diagram of the circuit breaker module of this utility model.

[0021] Appendix Figure 5 This is a circuit diagram of the conversion circuit of this utility model.

[0022] Appendix Figure 6 This is a circuit diagram of the control module of this utility model. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0024] Example: According to the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and attached Figure 6To further illustrate this utility model, an example of a DC emergency power supply (EPS) device includes a cabinet. The input terminal of the cabinet is electrically connected to the AC power output terminal, and the output terminal of the cabinet is electrically connected to the input terminal of an external load. The cabinet contains a high-frequency rectifier module for converting AC power. The input terminal of the high-frequency rectifier module is electrically connected to the AC power output terminal. A circuit breaker module for controlling the external load is located between the output terminal of the high-frequency rectifier module and the input terminal of the external load. Next to the high-frequency rectifier module is a battery module for continuing to supply power to the external load when the AC power supply is abnormal. The input terminal of the battery module is electrically connected to the AC power output terminal, and the output terminal of the battery module is electrically connected to the input terminal of the external load via a conversion circuit. The cabinet also contains a control module. The monitoring terminals of the high-frequency rectifier module, the external load, the circuit breaker module, the battery module, and the conversion circuit are all electrically connected to the control module.

[0025] The high-frequency rectification module includes an air switch QA1, a high-frequency rectifier CV1, a high-frequency rectifier CV2, a high-frequency rectifier CV3, a circuit breaker QF1, a circuit breaker QF2, and a circuit breaker QF3. One end of the circuit breaker QF1 is electrically connected to one end of the air switch QA1, and the other end of the air switch QA1 is electrically connected to the AC power output terminal. The other end of the circuit breaker QF1 is electrically connected to the input terminal of the high-frequency rectifier CV1. One end of the circuit breaker QF2 is electrically connected to one end of the air switch QA1, and the other end of the circuit breaker QF2 is electrically connected to the input terminal of the high-frequency rectifier CV2. One end of the circuit breaker QF3 is electrically connected to one end of the air switch QA1, and the other end of the circuit breaker QF3 is electrically connected to the output terminal of the high-frequency rectifier CV3. The output terminal of the high-frequency rectifier CV1 is electrically connected to the other ends of both the high-frequency rectifier CV2 and the high-frequency rectifier CV3.

[0026] The circuit breaker module includes circuit breakers 1QF1, 2QF1, 1QF2, 2QF2, 1QF3, 2QF3, 1QF4, 2QF4, current transformers 1CT1, 2CT1, 1CT2, 2CT2, 1CT3, 2CT3, 1CT4, and 2CT4. One end of circuit breaker 1QF1 is electrically connected to one end of circuit breaker 1QF2, one end of circuit breaker 1QF3, and one end of circuit breaker 1QF4, respectively. One end of circuit breaker 2QF1 is electrically connected to one end of circuit breaker 2QF2, one end of circuit breaker 2QF3, and one end of circuit breaker 2QF4, respectively. The other ends of circuit breaker 1QF1, circuit breaker 2QF1, circuit breaker 1QF2, and circuit breaker 1QF4 are also electrically connected. The other ends of circuit breakers 3, 2QF3, 1QF4, and 2QF4 are electrically connected to external loads respectively. Current transformer 1CT1 is sleeved on the conductor between circuit breaker 1QF1 and the external load. Current transformer 2CT1 is sleeved on the conductor between circuit breaker 2QF1 and the external load. Current transformer 1CT2 is sleeved on the conductor between circuit breaker 1QF2 and the external load. Current transformer 2CT2 is sleeved on the conductor between circuit breaker 2QF2 and the external load. Current transformer 1CT3 is sleeved on the conductor between circuit breaker 1QF3 and the external load. Current transformer 2CT3 is sleeved on the conductor between circuit breaker 2QF3 and the external load. Current transformer 1CT4 is sleeved on the conductor between circuit breaker 1QF4 and the external load. Current transformer 2CT4 is sleeved on the conductor between circuit breaker 2QF4 and the external load.

[0027] The switching circuit includes a circuit breaker QF5, a current sensor LE2, a switch KM1, and a switch KM2. One end of the circuit breaker QF5 is electrically connected to the output terminal of the high-frequency rectifier CV1. The other end of the circuit breaker QF5 is electrically connected to one end of switch KM1 and one end of switch KM2. The current sensor LE2 is sleeved on the wire connecting the other end of the circuit breaker QF5 and one end of switch KM1. The other end of switch KM1 is electrically connected to one end of circuit breaker 1QF1, and the other end of switch KM2 is electrically connected to one end of circuit breaker 2QF1.

[0028] The battery module includes a circuit breaker QF4, a battery BAT, a current sensor LE1, a DC / DC converter BH1, a high-frequency rectifier CV4, and a battery detector. The input terminal of the high-frequency rectifier CV4 is electrically connected to one end of the circuit breaker QF4, and the other end of the circuit breaker QF4 is electrically connected to one end of the air switch QA1. The output terminal of the high-frequency rectifier CV4 is electrically connected to the charging terminal of the battery BAT and the input terminal of the DC / DC converter BH1, respectively. The current sensor LE1 is sleeved on the guide between the battery BAT and the DC / DC converter BH1. The detection terminal of the battery detector is electrically connected to the measured terminal of the battery BAT. The output terminal of the DC / DC converter BH1 is electrically connected to one end of the circuit breaker QF5.

[0029] The control module includes a DC monitor JK, an automation controller BAS, a switch detector, an insulation detector, and a display for showing the type of fault. The signal output terminal of the battery detector is electrically connected to the signal input terminal of the DC monitor JK. The detection points of the switch detector are electrically connected to the test points of circuit breakers 1QF1, 2QF1, 1QF2, 2QF2, 1QF3, 2QF3, 1QF4, and 2QF4, respectively. The signal input terminal of the insulation detector is connected to the signal output terminal of current transformer 1CT1, the current transformer... The signal output terminals of current transformer 2CT1, current transformer 1CT2, current transformer 2CT2, current transformer 1CT3, current transformer 2CT3, current transformer 1CT4, current transformer 2CT4, current sensor LE1, and current sensor LE2 are electrically connected. The signal output terminal of the DC monitor JK is electrically connected to the signal input terminal of the automation controller BAS and the signal input terminal of the display, respectively. The control terminals of switch KM1 and switch KM2 are electrically connected to the signal output terminals of the automation controller BAS, respectively.

[0030] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A DC emergency power supply (EPS) device, comprising a cabinet, wherein the input terminal of the cabinet is electrically connected to the output terminal of an AC power supply, and the output terminal of the cabinet is electrically connected to the input terminal of an external load, characterized in that, The cabinet contains a high-frequency rectifier module for converting AC power. The input terminal of the high-frequency rectifier module is electrically connected to the AC power output terminal. A circuit breaker module for controlling the external load is provided between the output terminal of the high-frequency rectifier module and the input terminal of the external load. Next to the high-frequency rectifier module is a battery module for continuing to supply power to the external load when the AC power is abnormal. The input terminal of the battery module is electrically connected to the AC power output terminal. The output terminal of the battery module is electrically connected to the input terminal of the external load through a conversion circuit. The cabinet also contains a control module. The monitoring terminals of the high-frequency rectifier module, the external load, the circuit breaker module, the battery module, and the conversion circuit are all electrically connected to the control module.

2. The DC emergency power supply EPS device according to claim 1, characterized in that, The high-frequency rectification module includes an air switch QA1, a high-frequency rectifier CV1, a high-frequency rectifier CV2, a high-frequency rectifier CV3, a circuit breaker QF1, a circuit breaker QF2, and a circuit breaker QF3. One end of the circuit breaker QF1 is electrically connected to one end of the air switch QA1, and the other end of the air switch QA1 is electrically connected to the AC power output terminal. The other end of the circuit breaker QF1 is electrically connected to the input terminal of the high-frequency rectifier CV1. One end of the circuit breaker QF2 is electrically connected to one end of the air switch QA1, and the other end of the circuit breaker QF2 is electrically connected to the input terminal of the high-frequency rectifier CV2. One end of the circuit breaker QF3 is electrically connected to one end of the air switch QA1, and the other end of the circuit breaker QF3 is electrically connected to the output terminal of the high-frequency rectifier CV3. The output terminal of the high-frequency rectifier CV1 is electrically connected to the other ends of both the high-frequency rectifier CV2 and the high-frequency rectifier CV3.

3. The DC emergency power supply EPS device according to claim 1, characterized in that, The circuit breaker module includes circuit breakers 1QF1, 2QF1, 1QF2, 2QF2, 1QF3, 2QF3, 1QF4, 2QF4, current transformers 1CT1, 2CT1, 1CT2, 2CT2, 1CT3, 2CT3, 1CT4, and 2CT4. One end of circuit breaker 1QF1 is electrically connected to one end of circuit breaker 1QF2, one end of circuit breaker 1QF3, and one end of circuit breaker 1QF4, respectively. One end of circuit breaker 2QF1 is electrically connected to one end of circuit breaker 2QF2, one end of circuit breaker 2QF3, and one end of circuit breaker 2QF4, respectively. The other ends of circuit breaker 1QF1, circuit breaker 2QF1, circuit breaker 1QF2, and circuit breaker 1QF4 are also electrically connected. The other ends of circuit breakers 3, 2QF3, 1QF4, and 2QF4 are electrically connected to external loads respectively. Current transformer 1CT1 is sleeved on the conductor between circuit breaker 1QF1 and the external load. Current transformer 2CT1 is sleeved on the conductor between circuit breaker 2QF1 and the external load. Current transformer 1CT2 is sleeved on the conductor between circuit breaker 1QF2 and the external load. Current transformer 2CT2 is sleeved on the conductor between circuit breaker 2QF2 and the external load. Current transformer 1CT3 is sleeved on the conductor between circuit breaker 1QF3 and the external load. Current transformer 2CT3 is sleeved on the conductor between circuit breaker 2QF3 and the external load. Current transformer 1CT4 is sleeved on the conductor between circuit breaker 1QF4 and the external load. Current transformer 2CT4 is sleeved on the conductor between circuit breaker 2QF4 and the external load.

4. The DC emergency power supply EPS device according to claim 3, characterized in that, The switching circuit includes a circuit breaker QF5, a current sensor LE2, a switch KM1, and a switch KM2. One end of the circuit breaker QF5 is electrically connected to the output terminal of the high-frequency rectifier CV1. The other end of the circuit breaker QF5 is electrically connected to one end of switch KM1 and one end of switch KM2. The current sensor LE2 is sleeved on the wire connecting the other end of the circuit breaker QF5 and one end of switch KM1. The other end of switch KM1 is electrically connected to one end of circuit breaker 1QF1, and the other end of switch KM2 is electrically connected to one end of circuit breaker 2QF1.

5. The DC emergency power supply EPS device according to claim 4, characterized in that, The battery module includes a circuit breaker QF4, a battery BAT, a current sensor LE1, a DC / DC converter BH1, a high-frequency rectifier CV4, and a battery detector. The input terminal of the high-frequency rectifier CV4 is electrically connected to one end of the circuit breaker QF4, and the other end of the circuit breaker QF4 is electrically connected to one end of the air switch QA1. The output terminal of the high-frequency rectifier CV4 is electrically connected to the charging terminal of the battery BAT and the input terminal of the DC / DC converter BH1, respectively. The current sensor LE1 is sleeved on the guide between the battery BAT and the DC / DC converter BH1. The detection terminal of the battery detector is electrically connected to the measured terminal of the battery BAT. The output terminal of the DC / DC converter BH1 is electrically connected to one end of the circuit breaker QF5.

6. The DC emergency power supply EPS device according to claim 5, characterized in that, The control module includes a DC monitor JK, an automation controller BAS, a switch detector, an insulation detector, and a display for showing the type of fault. The signal output terminal of the battery detector is electrically connected to the signal input terminal of the DC monitor JK. The detection points of the switch detector are electrically connected to the test points of circuit breakers 1QF1, 2QF1, 1QF2, 2QF2, 1QF3, 2QF3, 1QF4, and 2QF4, respectively. The signal input terminal of the insulation detector is connected to the signal output terminal of current transformer 1CT1, the current transformer... The signal output terminals of current transformer 2CT1, current transformer 1CT2, current transformer 2CT2, current transformer 1CT3, current transformer 2CT3, current transformer 1CT4, current transformer 2CT4, current sensor LE1, and current sensor LE2 are electrically connected. The signal output terminal of the DC monitor JK is electrically connected to the signal input terminal of the automation controller BAS and the signal input terminal of the display, respectively. The control terminals of switch KM1 and switch KM2 are electrically connected to the signal output terminals of the automation controller BAS, respectively.

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