CN211579615U - External direct-current power supply device - Google Patents

External direct-current power supply device Download PDF

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Publication number
CN211579615U
CN211579615U CN201921993343.7U CN201921993343U CN211579615U CN 211579615 U CN211579615 U CN 211579615U CN 201921993343 U CN201921993343 U CN 201921993343U CN 211579615 U CN211579615 U CN 211579615U
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China
Prior art keywords
power supply
supply device
external
unit
monitoring unit
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Active
Application number
CN201921993343.7U
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Chinese (zh)
Inventor
吴柏涛
谭祖雁
黄嘉豪
杨智诚
胡志燊
许志光
李文亮
吴荣嘉
梁健纯
胡裕鸿
冼杰能
傅许良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Foshan Power Supply Bureau of Guangdong Power Grid Corp
Original Assignee
Guangdong Power Grid Co Ltd
Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Application filed by Guangdong Power Grid Co Ltd, Foshan Power Supply Bureau of Guangdong Power Grid Corp filed Critical Guangdong Power Grid Co Ltd
Priority to CN201921993343.7U priority Critical patent/CN211579615U/en
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Publication of CN211579615U publication Critical patent/CN211579615U/en
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Abstract

The utility model relates to an electric power tech field, more specifically relates to an external DC power supply device, including monitoring unit and power supply unit, monitoring unit and power supply unit electricity are connected, be equipped with the bayonet joint of being connected with external structure on the external DC power supply device. The utility model discloses a connector is connected with the cubical switchboard, directly supplies power for the cubical switchboard through the power supply unit, and the control unit is monitored and the mode is chooseed for use, and the effectual stand-by power supply that provides avoids personnel to take risk and maintains. Just the utility model discloses the iron phosphate lithium cell of having taken large specific energy is as the electric energy storage, small in size can provide stable direct current voltage output in longer time, and the wiring is simple and easy, and convenient operation can also be for automatic switch debugging, maintenance, and the collection is copied the debugging, the cubical switchboard operation and is provided many gears DC power supply such as electric tool's use, helps improving work efficiency, safe and reliable, and the use is nontoxic pollution-free, can effectively reduce operation personnel's personal risk.

Description

External direct-current power supply device
Technical Field
The utility model relates to an electric power tech field, more specifically relates to an external DC power supply device.
Background
In the distribution network, when most cubical switchboard direct current power supply system broke down, the phenomenon that the cubical switchboard closed a floodgate shutting can appear, and the cubical switchboard need unpack cubical switchboard mechanism panel under the condition of direct current power supply disappearance, and operating personnel direct operation spring mechanism contact could carry out the operation of closing a floodgate, and this operation violates safety regulation, and has the safety risk to operating personnel.
SUMMERY OF THE UTILITY MODEL
The utility model provides an external DC power supply device for overcoming the defect that the switch cabinet DC power supply system has a fault and needs to be repaired in danger.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model provides an external DC power supply device, includes monitoring unit and power supply unit, monitoring unit and power supply unit electricity are connected, be equipped with the bayonet joint of being connected with external structure on the external DC power supply device.
The utility model discloses a bayonet joint with external structure connection, also be connected with the cubical switchboard through the bayonet joint exactly, directly give the cubical switchboard power supply through the power supply unit, the control unit is monitored and the mode is chooseed for use, and the effectual stand-by power supply that provides avoids personnel to take risk and maintains.
Preferably, the monitoring unit is provided with a display unit for reflecting device status information. Preferably, the monitoring unit is further provided with a controller and a function button for external regulation, and the controller is electrically connected with the display unit and the function button. Preferably, the display unit is a liquid crystal display. Specifically, the method comprises the following steps: the monitoring unit is mainly responsible for reflecting the state information of the device, such as output voltage, output current, charging voltage, charging current and other data in a power supply mode and a charging mode. Meanwhile, the display unit reflects the states of battery undervoltage, battery overvoltage, output undervoltage and the like by setting adjustment reference parameters. In addition, when the battery is in overvoltage, battery undervoltage, alternating current fault, module fault, insulation fault and other fault conditions, the liquid crystal display screen of the monitoring unit can display corresponding characters to give an alarm, and the red warning lamp and the alarm can be synchronously lightened and sounded.
Preferably, the monitoring unit is further provided with a heat sink for dissipating heat. The setting is avoided monitoring unit and power supply unit during operation too hot like this, owing to all be the setting of circuit, consequently the life of components and parts can be influenced in the temperature rise, effectively cools down to improve its life.
Preferably, the power supply unit comprises a charging circuit, a boosting circuit and a storage battery pack, and the charging circuit and the boosting circuit are electrically connected with the storage battery pack. This is achieved by
Preferably, the charging circuit is externally connected with an AC220V power supply, and a high-frequency switch rectifying module is arranged inside the charging circuit.
Preferably, the boost circuit is provided with a DC48V boost module, a DC110V boost module and a DC220V boost module, and is correspondingly provided with an output DC48V port, a DC110V port and a DC220V port.
Preferably, the battery pack is provided with a port to output DC 24V.
Preferably, the storage battery pack adopts a lithium iron phosphate battery, and has the current of 30Ah, the cycle life of 1000 times and 2000 times and the specific energy of 155 Wh/kg.
Specifically, the method comprises the following steps: the power supply unit is a core unit of the device, the unit adopts a lithium iron phosphate battery (30Ah, cycle life 1000 times and 2000 times, specific energy (Wh/kg)155) with large specific energy as an energy storage device, and supplies direct current electric energy to the switch cabinet when a direct current system of the switch cabinet fails, so that the switch cabinet can support output while charging. The electric unit can be roughly divided into three major parts, a charging circuit, a boosting circuit and a storage battery pack. The charging circuit charges the storage battery after passing through a high-frequency switch rectifying module of DC24V/20A by connecting with an external AC220V power supply. The storage battery is provided with output voltages of DC48V, DC110V and DC220V through the boosting module. In addition, the battery has a port for directly outputting DC24V without a boost circuit. When a direct-current power supply is provided for the KYN cabinet, a DC terminal of the KYN cabinet and a device port can be connected through a special aviation plug to provide DC24V, or the port can provide multi-gear direct-current voltages such as DC48V, DC110V and DC220V (which are switched through a direct-current output voltage gear knob).
Preferably, the external direct-current power supply device is provided with a box structure, and the monitoring unit and the power supply unit are both arranged in the box structure. The arrangement is to protect the internal monitoring unit and the power supply unit, prevent the monitoring unit and the power supply unit from being damaged due to being rubbed and touched, and simultaneously prevent other people from touching the external direct-current power supply device during working, so that the safety is improved.
Compared with the prior art, the beneficial effects are:
the utility model provides an external DC power supply device, through the bayonet joint with external structural connection, also be connected with the cubical switchboard through the bayonet joint, directly give the cubical switchboard power supply through the power supply unit, the control unit is monitored and the mode is chooseed for use, the effectual stand-by power supply that provides avoids personnel to risk and maintains. Just the utility model discloses the iron phosphate lithium cell of having taken large specific energy is as the electric energy storage, small in size can provide stable DC voltage output in longer a period, and the wiring is simple and easy, and convenient operation can also be for automatic switch debugging, maintenance, the collection is copied the debugging, cubical switchboard operation and electric tool's use etc. and is provided many gears DC power supply, helps improving work efficiency, safe and reliable, the non-toxic pollution-free of use, can effectively reduce operation personnel's personal risk.
Drawings
Fig. 1 is a schematic structural diagram of the external dc power supply device of the present invention.
Fig. 2 is a schematic circuit diagram of the power supply unit.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
examples
Fig. 1 to fig. 2 show an embodiment of an external dc power supply device, which includes a monitoring unit 1 and a power supply unit 2, wherein the monitoring unit 1 is electrically connected to the power supply unit 2, and the external dc power supply device is provided with a plug connected to an external structure.
Wherein the monitoring unit 1 is provided with a display unit 11 for reflecting device status information. In this embodiment, the display unit is a liquid crystal display. In addition, the monitoring unit 1 is also provided with a controller and a function button 12 for regulation and control, and the controller is electrically connected with the display unit 11 and the function button 12. In this embodiment, the controller is a single chip microcomputer.
Specifically, the method comprises the following steps: the monitoring unit 1 is mainly responsible for reflecting the state information of the device, such as output voltage, output current, charging voltage, charging current and other data in the power supply mode and the charging mode. Meanwhile, the display unit 11 reflects states of battery undervoltage, battery overvoltage, output undervoltage and the like by setting adjustment reference parameters. In addition, when the battery is in overvoltage, battery undervoltage, alternating current fault, module fault, insulation fault and other fault conditions, the liquid crystal display screen of the monitoring unit can display corresponding characters to give an alarm, and the red warning lamp and the alarm can be synchronously lightened and sounded.
Wherein the monitoring unit 1 is further provided with a heat sink 13 for heat dissipation. The setting is avoided monitoring unit and power supply unit during operation too hot like this, owing to all be the setting of circuit, consequently the life of components and parts can be influenced in the temperature rise, effectively cools down to improve its life.
The power feeding unit 2 includes a charging circuit 21, a booster circuit 22, and a battery pack 23, and both the charging circuit 21 and the booster circuit 22 are electrically connected to the battery pack 23.
The charging circuit 21 is externally connected with an AC220V power supply, and a high-frequency switch rectifying module is arranged inside the charging circuit 21.
The booster circuit 22 includes a DC48V booster module, a DC110V booster module, and a DC220V booster module, and includes an output DC48V port, a DC110V port, and a DC220V port. The values of these ports are merely preferable, and are not restrictive, and may be selected and designed as necessary.
Among these, the battery pack 23 is provided with a port for outputting DC 24V.
In addition, the storage battery 23 adopts a lithium iron phosphate battery, and the current of the storage battery 23 is 30Ah, the cycle life is 1000 times and 2000 times, and the specific energy is 155 Wh/kg. The values of these ports are merely preferred, are not restrictive, and can be selected as needed.
As shown in fig. 1, the following ports are provided: DC24V output at 6, DC output at 7 (48V, DC110V, DC220V), AC220V input at 8 (charging source), battery switch at 24, output switch at 25, and AC input switch at 26.
Specifically, the method comprises the following steps: the power supply unit 2 is a core unit of the device, and the unit adopts a lithium iron phosphate battery (30Ah, cycle life 1000 times and 2000 times, specific energy (Wh/kg)155) with high specific energy as an energy storage device, supplies direct current electric energy to the switch cabinet when a direct current system of the switch cabinet fails, and can support output while charging. The electric unit can be roughly divided into three major parts, a charging circuit, a boosting circuit and a storage battery pack. The charging circuit charges the storage battery after passing through a high-frequency switch rectifying module of DC24V/20A by connecting with an external AC220V power supply. The storage battery is provided with output voltages of DC48V, DC110V and DC220V through the boosting module. In addition, the battery has a port for directly outputting DC24V without a boost circuit. When a direct-current power supply is provided for the KYN cabinet, a DC terminal of the KYN cabinet and a device port can be connected through a special aviation plug to provide DC24V, or the port can provide multi-gear direct-current voltages such as DC48V, DC110V and DC220V (which are switched through a direct-current output voltage gear knob).
Wherein, external DC power supply unit is equipped with box structure 3, and monitoring unit 1 and power supply unit 2 all install in box structure 3. The arrangement is to protect the internal monitoring unit and the power supply unit, prevent the monitoring unit and the power supply unit from being damaged due to being rubbed and touched, and simultaneously prevent other people from touching the external direct-current power supply device during working, so that the safety is improved.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (8)

1. An external direct-current power supply device is characterized by comprising a monitoring unit (1) and a power supply unit (2), wherein the monitoring unit (1) is electrically connected with the power supply unit (2), and a plug-in connector connected with an external structure is arranged on the external direct-current power supply device;
the monitoring unit (1) is also provided with a radiator (13) for radiating heat;
the power supply unit (2) comprises a charging circuit (21), a boosting circuit (22) and a storage battery pack (23), wherein the charging circuit (21) and the boosting circuit (22) are electrically connected with the storage battery pack (23).
2. An external direct-current power supply device according to claim 1, wherein the monitoring unit (1) is provided with a display unit (11) for reflecting device status information.
3. The external direct-current power supply device according to claim 2, wherein the monitoring unit (1) is further provided with a controller and a function button (12) for external regulation, and the controller is electrically connected with the display unit (11) and the function button (12).
4. The external direct-current power supply device according to claim 1, wherein the charging circuit (21) is externally connected with an AC220V power supply, and a high-frequency switch rectifying module is arranged inside the charging circuit (21).
5. The external direct-current power supply device according to claim 1 or 4, wherein the boost circuit (22) is provided with a DC48V boost module, a DC110V boost module and a DC220V boost module, and correspondingly provided with an output DC48V port, a DC110V port and a DC220V port.
6. An external DC power supply according to claim 1, characterized in that the battery pack (23) is provided with a port for outputting DC 24V.
7. The external DC power supply device according to claim 1, wherein the battery pack (23) is a lithium iron phosphate battery, and the current of the battery pack (23) is 30Ah, the cycle life is 1000 and 2000 times, and the specific energy is 155 Wh/kg.
8. An external direct-current power supply device according to claim 1, wherein the external direct-current power supply device is provided with a box body structure (3), and the monitoring unit (1) and the power supply unit (2) are both arranged in the box body structure (3).
CN201921993343.7U 2019-11-15 2019-11-15 External direct-current power supply device Active CN211579615U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921993343.7U CN211579615U (en) 2019-11-15 2019-11-15 External direct-current power supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921993343.7U CN211579615U (en) 2019-11-15 2019-11-15 External direct-current power supply device

Publications (1)

Publication Number Publication Date
CN211579615U true CN211579615U (en) 2020-09-25

Family

ID=72531390

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921993343.7U Active CN211579615U (en) 2019-11-15 2019-11-15 External direct-current power supply device

Country Status (1)

Country Link
CN (1) CN211579615U (en)

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