CN217522627U - Modularized direct current standby power supply device adopting super capacitor, fuel and storage battery - Google Patents
Modularized direct current standby power supply device adopting super capacitor, fuel and storage battery Download PDFInfo
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- CN217522627U CN217522627U CN202221142325.XU CN202221142325U CN217522627U CN 217522627 U CN217522627 U CN 217522627U CN 202221142325 U CN202221142325 U CN 202221142325U CN 217522627 U CN217522627 U CN 217522627U
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Abstract
The utility model discloses an adopt super capacitor, the modularization direct current stand-by power supply device of fuel and battery, including super capacitor bank, storage battery, hydrogen fuel cell piles and direct current generating line, super capacitor bank connects in direct current generating line, storage battery connects in direct current generating line, hydrogen fuel cell piles and also connects in direct current generating line, still be connected with the charging unit on the direct current generating line, direct current load power supply is qualified for the next round of competitions and the control unit, the control unit and super capacitor bank electric connection, the control unit and storage battery electric connection, the control unit piles electric connection with hydrogen fuel cell, the control unit and the charging unit electric connection, the control unit is qualified for the next round of competitions electric connection with the direct current load power supply. The utility model discloses can the independent assortment, nimble extension, when the operation, according to the operation time electricity time-sharing of difference put into operation, have low cost, high performance, long-life, low-loss, energy-concerving and environment-protective, reduce to take up an area of, the nimble various, the reasonable advantage of technical economy of scheme.
Description
Technical Field
The utility model relates to an adopt modularization direct current stand-by power supply device of super capacitor, fuel and battery belongs to reserve direct current power supply technical field.
Background
In an important infrastructure with continuous operation requirements, a high-reliability direct-current standby power supply device needs to be installed, and the continuous power supply capability lasting for a period of time can still be guaranteed under the most extreme accident condition. The method is suitable for important industrial or civil facilities such as communication base stations, data centers, power stations, transformer substations, hospitals, airports and the like.
The existing direct current standby power supply device adopts a storage battery pack as an energy storage unit, and a charging power supply, a switch unit and a control unit are configured around the charging and discharging characteristics of the storage battery. With the development of new energy storage technology and the increasingly strict environmental requirements, the technology of the dc standby power supply device has also been developed. From the development of the energy storage unit, a novel energy storage technology comprising capacitor energy storage and flywheel energy storage is applied, and energy supply types of clean power generation such as hydrogen energy power generation are introduced. The diversity of technology options increases the complexity of control protection and increases the difficulty of configuration options.
The above techniques have the following disadvantages:
the storage battery is used as the direct-current standby power supply device of the energy storage unit, the technology is mature, the operation is simple and reliable, and the construction cost is low. The main defects are that the energy density and the power density of the storage battery are low, the environment is polluted, in order to meet the power requirement and the duration requirement when the storage battery is used as a standby power supply for discharging, the number of the storage batteries is required to be large, and the occupied area is large;
meanwhile, the storage battery is small in charging and discharging cycle number and large in internal loss resistance, is usually in a continuous floating charging state in order to guarantee reliability, causes unnecessary continuous energy loss, is short in service life, is weakened in performance at low temperature, and is required to be replaced periodically even if not put into operation, so that the cost of long-time operation is increased, and the workload of maintenance and repair is increased. Meanwhile, after the number of charging and discharging cycles of the storage battery is increased, the capacity is high, the risk of insufficient real discharging capacity exists, the requirement of safe and reliable power supply time cannot be met, and larger loss is caused.
The direct-current standby power supply device using the super capacitor as the energy storage unit has high power density and more repeated charging and discharging times. Therefore, the device has the advantages of small installation volume, high instantaneous discharge power, small internal resistance, low continuous live operation loss, long service life, small influence of used materials on the environment, simple operation and convenient maintenance. However, the discharge duration is short, and the discharge voltage rapidly decreases with the progress of discharge, and thus the power supply cannot be used as a backup power supply for a long time.
The direct-current standby power supply device replaced by the clean energy hydrogen fuel cell has the advantages of high power density, high energy density, large power supply output power, long continuous power supply time and no energy loss in a standby state, and is environment-friendly green energy. However, the time from start-up to full capacity is long, usually 10 seconds, and the requirement of fast standby cannot be fully met. Meanwhile, the hydrogen fuel cell has the restriction factor of higher cost in the prior stage, and the wide application is limited.
In the aspects of environmental protection, reliable technology, land occupation saving, convenient use and the like, only one of the two can be selected in a balanced way, and only one part of the requirements can be met.
In a scheme adopting a combination of a plurality of standby power supply technologies, a control method is relatively complex, and the problems are not considered from the aspects of reducing equipment capacity and optimizing the coordination among various technologies. This can cause the battery pack capacity to be reconfigured with the capacity of other energy storage or power generation devices, resulting in redundancy and waste of equipment options, and additional cost.
Therefore, it is highly desirable to seek a preferable solution to the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a modularization direct current stand-by power supply device who adopts super capacitor, fuel and battery, the utility model discloses can the independent assortment, nimble extension adopts modularization configuration functional unit and extensible capacity unit, when the operation, according to the operation duration electricity time-sharing section of difference and drop into the operation, have low cost, high performance, long-life, low-loss, energy-concerving and environment-protective, reduce to take up an area of, the nimble various, the reasonable advantage of technical economy of scheme.
In order to solve the technical problem, the utility model discloses a following technical scheme: the modularized direct-current standby power supply device adopting the super capacitor, the fuel and the storage battery comprises a super capacitor bank, a storage battery pack, a hydrogen fuel cell stack and a direct-current bus, wherein the super capacitor bank is connected to the direct-current bus, the storage battery pack is connected to the direct-current bus, the hydrogen fuel cell stack is also connected to the direct-current bus, the direct-current bus is also connected with a charging unit, a direct-current load power supply outlet wire and a control unit, the control unit is electrically connected with the super capacitor bank, the control unit is electrically connected with the storage battery pack, the control unit is electrically connected with the hydrogen fuel cell stack, the control unit is electrically connected with the charging unit, and the control unit is electrically connected with the direct-current load power supply outlet wire; the energy-saving and environment-friendly energy-saving power supply can be freely combined and flexibly expanded, and can be electrically put into operation at different operation time intervals during operation, so that the energy-saving and environment-friendly energy-saving power supply has the advantages of low cost, high performance, long service life, low loss, energy conservation, environmental protection, land occupation reduction, flexible and various schemes and economic and reasonable technology.
In the above modular dc backup power supply apparatus using a super capacitor, a fuel and a storage battery, the dc bus includes a dc bus anode and a dc bus cathode, a capacitor circuit breaker is disposed between the dc bus anode and the super capacitor bank, the dc bus cathode is connected to the super capacitor bank through a line, and the control unit is electrically connected to the capacitor circuit breaker; and the capacitor circuit breaker is controlled by the control unit according to different running time electric time intervals.
In the above modularized dc standby power supply device using a super capacitor, fuel and a battery, a battery circuit breaker is arranged between the positive electrode of the dc bus and the battery pack, the negative electrode of the dc bus is connected to the battery pack through a line, and the control unit is electrically connected to the battery circuit breaker; and the storage battery circuit breaker is controlled by the control unit according to different running time electric time intervals.
In the modularized direct-current standby power supply device adopting the super capacitor, the fuel and the storage battery, a hydrogen fuel cell circuit breaker is arranged between the positive electrode of the direct-current bus and the hydrogen fuel cell stack, the negative electrode of the direct-current bus is connected with the hydrogen fuel cell stack through a circuit, and the control unit is electrically connected with the hydrogen fuel cell circuit breaker; and the hydrogen fuel cell circuit breaker is controlled by the control unit according to different running time electric time interval input running.
In the above modularized direct current standby power supply device using a super capacitor, fuel and a storage battery, the upper pipeline of the hydrogen fuel cell stack is connected with a hydrogen storage tank, a hydrogen valve is arranged on a pipe section between the hydrogen storage tank and the hydrogen fuel cell stack, and the control unit is electrically connected with the hydrogen valve; when the hydrogen fuel cell stack is required to be put into use, the control unit is used for controlling the hydrogen valve to realize the energy supply of the hydrogen fuel cell stack.
The modularized direct-current standby power supply device adopting the super capacitor, the fuel and the storage battery further comprises a tray cabinet support, wherein the super capacitor bank, the storage battery pack, the hydrogen fuel cell stack and the direct-current bus are arranged on the tray cabinet support; the top of the tray cabinet bracket is provided with a direct current bus anode and a direct current bus cathode which are respectively connected to a super capacitor bank, a storage battery pack and a hydrogen fuel cell stack which are arranged on the bracket in a layering way, a charging unit and a direct current load power supply outlet wire are realized by cables or the extended connection of the direct current bus on the top of the tray cabinet, and the super capacitor bank, the storage battery pack and the hydrogen fuel cell stack are all configured into modules in groups and can be arranged on a standard bracket; the device is arranged on the disk cabinet support to form a modularized direct-current standby power supply device, can be put into operation according to different operation time electricity in operation, and has the advantages of low cost, high performance, long service life, low loss, energy conservation, environmental protection, land occupation reduction, flexible and various schemes and reasonable technical economy.
Compared with the prior art, the utility model discloses an useful part lies in:
1. the utility model adopts the modularized configuration function unit and the expandable capacity unit, when in operation, the electric energy is put into operation according to different operation time periods, and the electric energy-saving energy;
2. the device is arranged on the disk cabinet bracket to form a modular DC standby power supply device, the number of the modular DC standby power supply devices can be selected according to different operation requirements, the expansion is flexible, and the use scene is enlarged; the super capacitor bank, the storage battery pack and the hydrogen fuel cell stack are connected with the anode and the cathode of the direct current bus through corresponding circuit breakers, and are sequentially put in and cut off according to the control principle; when the system is normal, the charging unit supplies power to the direct current bus, and when the system has an accident and loses the direct current power supply, the direct current bus supplies power to the system reversely and continuously;
3. the utility model adopts the super capacitor to realize quick response, the full capacity of the fuel cell is put into reserve after a certain time delay, and the storage battery is only put into reserve as a stable reserve means, thereby ensuring safe operation and reducing the reserve capacity of the storage battery;
4. the utility model has a small-capacity storage battery, a charging device matched with the small capacity, a large-capacity hydrogen fuel cell stack, and a large-capacity hydrogen storage tank which is connected to a direct current bus as a direct current standby power supply;
5. the utility model has the advantages that the energy storage unit is configured in a modularized way, the capacity of the energy storage unit is configured in a modularized way, the flexible configuration is realized, and the operation and the control are simple and convenient;
6. the utility model has wide application range, can be used in a mode of stable and constant discharge of small current for a long time, can be used in a mode of large current discharge in a short time, and can also be operated in a mode of continuous power generation under the condition of continuous hydrogen supply;
7. the utility model discloses use super capacitor's long-life short-term big discharge's characteristics, including the high reliable low-cost advantage of battery, including the characteristics that hydrogen can start the long continuation of the journey of environmental protection slowly, synthesize and realize the modularization, energy-concerving and environment-protective, reliable, the advantage of taking up an area of is saved simply in control.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of a modular combination of a supercapacitor bank, a battery pack and a hydrogen fuel cell stack according to the present invention;
fig. 3 is a schematic diagram of the control relationship between the central control unit and the supercapacitor bank, the storage battery pack, the hydrogen fuel cell stack, the charging unit, the dc load power supply outlet line, the capacitor circuit breaker, the battery circuit breaker, the hydrogen fuel cell circuit breaker, and the hydrogen valve, respectively;
fig. 4 is a schematic view of the operation mode of the present invention.
Reference numerals: the system comprises a super capacitor bank 1, a storage battery pack 2, a hydrogen fuel cell stack 3, a direct current bus 4, a charging unit 5, a direct current load power supply outlet 6, a control unit 7, a direct current bus anode 8, a direct current bus cathode 9, a capacitance loop breaker 10, a storage battery loop breaker 11, a hydrogen fuel cell loop breaker 12, a hydrogen storage tank 13, a hydrogen valve 14 and a dish cabinet support 15.
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Detailed Description
The utility model discloses a theory of operation of embodiment:
the utility model discloses the during operation:
and (3) normal operation state: capacitive loop breaker 10 — closed; the storage battery pack 2 and the storage battery loop breaker 11 enter a circulating charging state; in the state 1, a storage battery circuit breaker 11 is closed, and a storage battery pack 2 is charged; in the state 2, the storage battery pack 2 is fully charged, and the storage battery loop breaker 11 is disconnected; hydrogen fuel cell circuit breaker 12-open; hydrogen valve 14-closed valve;
the system failure, the loss of the direct current power supply, the initial time t of the accident is 0:
detecting the voltage drop of the direct current bus or receiving a control instruction for starting the direct current standby power supply sent by a system, wherein the starting time t is t 1 ：
the hydrogen fuel cell stack 3 gradually increases the output power to reach the full power operation state, and the initial time t is t 2 ：
in the accident state, the DC standby power supply stably operates, and the hydrogen fuel cell stack 3 continuously generates power with the initial time t equal to t 3 ：
eliminating system fault, restoring power supply of DC bus, reaching rated value of DC bus voltage, and starting time t 4 ：
The capacitor circuit breaker 10-sends a closing control command and closes; a storage battery circuit breaker 11-sends a closing instruction and closes; hydrogen fuel cell circuit breaker 12 — remains closed; hydrogen valve 14-issuing a valve closing command and gradually closing the valve; hydrogen fuel cell stack 3-step-by-step reduction of output power to zero power, wherein the accident is eliminated and the operation recovery time t ═ t 4 The switching time of the breaker on/off and the time of the hydrogen fuel cell stack 3 stopping step by step are comprehensively calculated, and t is a normal value 4 ≥t 3 +60 seconds;
the super capacitor group 1 is connected to the standby power line for a long time as a first time period t during an accident 1 Then, the secondary battery pack 2 is put into operation as the second time period t 2 And finally, the hydrogen fuel cell stack 3 is put into continuous power generation as a third time period t 3 The standby power supply ensures the safe, reliable and efficient power supply of the direct current standby power supply;
the super capacitor bank 1, the storage battery pack 2 and the hydrogen fuel cell stack 3 are connected with the anode and the cathode of the direct current bus through corresponding circuit breakers, and are put in and cut off in sequence according to the control principle; when the system is normal, the direct current charger supplies power to the direct current bus, and when the system has an accident and loses the direct current power supply, the direct current bus supplies power to the system reversely and continuously.
Claims (6)
1. A modularized direct-current standby power supply device adopting a super capacitor, fuel and a storage battery comprises a super capacitor bank (1), a storage battery pack (2), a hydrogen fuel cell stack (3) and a direct-current bus (4), and is characterized in that the super capacitor bank (1) is connected to the direct-current bus (4), the storage battery pack (2) is connected to the direct-current bus (4), the hydrogen fuel cell stack (3) is also connected to the direct-current bus (4), the direct-current bus (4) is also connected with a charging unit (5), a direct-current load power supply outlet wire (6) and a control unit (7), the control unit (7) is electrically connected with the super capacitor bank (1), the control unit (7) is electrically connected with the storage battery pack (2), the control unit (7) is electrically connected with the hydrogen fuel cell stack (3), and the control unit (7) is electrically connected with the charging unit (5), the control unit (7) is electrically connected with the direct current load power supply outlet wire (6).
2. The modular direct-current standby power supply device adopting the super capacitor, the fuel and the storage battery as claimed in claim 1, wherein the direct-current bus (4) comprises a direct-current bus anode (8) and a direct-current bus cathode (9), a capacitor circuit breaker (10) is arranged between the direct-current bus anode (8) and the super capacitor bank (1), the direct-current bus cathode (9) is connected with the super capacitor bank (1) through a line, and the control unit (7) is electrically connected with the capacitor circuit breaker (10).
3. The modular direct current backup power supply device adopting the super capacitor, the fuel and the storage battery according to claim 2 is characterized in that a storage battery circuit breaker (11) is arranged between the direct current bus anode (8) and the storage battery pack (2), the direct current bus cathode (9) is connected with the storage battery pack (2) through a line, and the control unit (7) is electrically connected with the storage battery circuit breaker (11).
4. The modular dc backup power supply unit with super capacitor, fuel and accumulator as claimed in claim 2, characterized in that a hydrogen fuel cell circuit breaker (12) is arranged between the dc bus anode (8) and the hydrogen fuel cell stack (3), the dc bus cathode (9) is connected to the hydrogen fuel cell stack (3) by a line, and the control unit (7) is electrically connected to the hydrogen fuel cell circuit breaker (12).
5. The modular direct-current standby power supply device adopting the super capacitor, the fuel and the storage battery as claimed in claim 1, wherein a hydrogen storage tank (13) is connected to the hydrogen fuel cell stack (3) through a pipeline, a hydrogen valve (14) is arranged on the pipeline between the hydrogen storage tank (13) and the hydrogen fuel cell stack (3), and the control unit (7) is electrically connected with the hydrogen valve (14).
6. The modular DC backup power supply device adopting the super capacitor, the fuel and the storage battery according to claim 1, characterized by further comprising a tray cabinet support (15), wherein the super capacitor bank (1), the storage battery bank (2), the hydrogen fuel cell stack (3) and the DC bus bar (4) are all arranged on the tray cabinet support (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221142325.XU CN217522627U (en) | 2022-05-12 | 2022-05-12 | Modularized direct current standby power supply device adopting super capacitor, fuel and storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221142325.XU CN217522627U (en) | 2022-05-12 | 2022-05-12 | Modularized direct current standby power supply device adopting super capacitor, fuel and storage battery |
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| Publication Number | Publication Date |
|---|---|
| CN217522627U true CN217522627U (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221142325.XU Active CN217522627U (en) | 2022-05-12 | 2022-05-12 | Modularized direct current standby power supply device adopting super capacitor, fuel and storage battery |
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| Country | Link |
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| CN (1) | CN217522627U (en) |
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2022
- 2022-05-12 CN CN202221142325.XU patent/CN217522627U/en active Active
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