CN116455045A - Base station light reserve power supply guarantee system based on lead-acid storage battery - Google Patents
Base station light reserve power supply guarantee system based on lead-acid storage battery Download PDFInfo
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- 239000002253 acid Substances 0.000 title claims abstract description 153
- 230000005611 electricity Effects 0.000 claims abstract description 56
- 238000004146 energy storage Methods 0.000 claims abstract description 27
- 230000002457 bidirectional effect Effects 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 18
- 238000007405 data analysis Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 16
- 238000005286 illumination Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000295 complement effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
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- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a base station light reserve power supply guarantee system based on a lead-acid storage battery, which comprises a commercial power supply, alternating current power distribution, an alternating current load, a main controller, a switching power supply, a charging management module, a photovoltaic power supply module, a lead-acid storage battery pack, direct current power distribution and a direct current load; the main controller is used for acquiring weather forecast of an area where the base station is located, electricity consumption of commercial power, electricity generation of the photovoltaic power supply module and charge and discharge of the lead-acid storage battery, analyzing electricity generation rule and electricity consumption rule of the base station according to the acquired data, and adjusting charging mode of the charging management module to the lead-acid storage battery and energy storage application of the lead-acid storage battery by adopting peak clipping and valley filling strategies according to the analyzed electricity generation rule and electricity consumption rule. The system can directly supply power to the base station direct current load equipment through the direct current generated by the photovoltaic power supply module, and actively balance charging and energy storage are carried out on the lead-acid storage battery pack, so that the electric quantity loss of the traditional energy storage system is reduced, and the system cost is reduced.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a base station light reserve power supply guarantee system based on a lead-acid storage battery.
Background
Currently, a base station generally adopts a storage battery as an energy storage system (namely, a standby power supply), and common storage batteries for the energy storage system comprise a lithium battery and a lead-acid storage battery. The energy storage system commonly used in the base station is an ac-dc conversion system, and the photovoltaic system is a dc-ac conversion system, but the base station needs to use not only dc-loaded equipment but also ac-loaded equipment in the daily operation process, so that the single energy storage system or photovoltaic system cannot meet the daily electricity demand of the base station.
With the green electricity demand and the energy storage demand, a lot of base stations are added with a photovoltaic system in an energy storage system to meet the daily electricity demand, for example, a wind-solar commercial power complementary communication base station power supply system disclosed in China patent publication No. CN 101814769B. The system comprises commercial power, an oil engine, alternating current power distribution, a switching power supply controller, a switching power supply detection current sensor, a wind-solar complementary output current sensor, a storage battery, direct current power distribution, an alternating current load, a communication load, a solar battery, a wind driven generator, a wind-solar complementary controller, a storage battery current sensor, a storage battery temperature sensor and a load current sensor. According to the invention, wind energy and solar energy are used as preferential power supply energy sources, commercial power is used as supplement, the power supply reliability of the system is ensured, wind, light and commercial power complementary control is self-adaptive regulation, and smooth transition is realized. However, when the power supply system is used in daily life, alternating current and direct current are required to be converted for many times, the electric quantity loss is large in the daily life process, the system cost is increased, the original lead-acid storage battery of the base station is used only as standby power, the energy storage of daily charge and discharge can not be supported for use, meanwhile, the existing photovoltaic system and the energy storage system can not be used for balanced management, and the high-efficiency comprehensive utilization of the base station power supply can not be met.
Disclosure of Invention
The invention aims to provide a base station light reserve power supply guarantee system based on a lead-acid storage battery, which solves the problems in the background art.
In order to achieve the above object, the solution of the present invention is: a base station light reserve power supply guarantee system based on a lead-acid storage battery comprises a commercial power supply, an alternating-current distribution, an alternating-current load, a main controller, a switching power supply, a charging management module, a photovoltaic power supply module, a lead-acid storage battery pack, a direct-current distribution and a direct-current load; the utility power is connected with alternating current distribution, the alternating current load provides electric energy through alternating current distribution, one path of alternating current distribution is connected with a switching power supply, the switching power supply is connected with a main controller, one path of output end of the switching power supply is connected to a direct current bus, the other path of output end of the switching power supply is connected to a charging management module, the direct current bus is respectively connected with a lead-acid storage battery pack and direct current distribution, the direct current distribution supplies power to the direct current load, and the photovoltaic power supply module outputs the electric energy to the charging management module and then sends the electric energy to the lead-acid storage battery pack, and then outputs the electric energy to the direct current bus through the lead-acid storage battery pack; the charging management module is connected with the main controller, and the main controller is used for acquiring weather forecast of an area where the base station is located, electricity consumption of commercial power, electricity generation of the photovoltaic power supply module and charging and discharging capacity of the lead-acid storage battery, analyzing electricity generation rules and electricity consumption rules of the base station according to the acquired data, and adjusting charging modes of the charging management module on the lead-acid storage battery and energy storage application of the lead-acid storage battery by adopting peak clipping and valley filling strategies according to the analyzed electricity generation rules and electricity consumption rules.
Further, the main controller comprises a weather detection unit, a current consumption amount metering unit, a power consumption load peak-valley value control unit and a data analysis unit; the weather detection unit is used for obtaining weather conditions of the position of the base station, obtaining the illumination intensity and illumination duration of the current day of the position of the base station, and sending the obtained illumination data to the data analysis unit; the electricity consumption amount metering unit comprises a bidirectional alternating current ammeter and a bidirectional direct current ammeter, wherein the bidirectional alternating current ammeter is used for metering alternating current electricity of mains supply and sending acquired electric quantity data to the data analysis unit, and the bidirectional direct current ammeter is used for metering direct current electric quantity of a direct current bus and sending the acquired electric quantity data to the data analysis unit; the data analysis unit calculates a charging peak period and a charging valley period of the photovoltaic power supply module according to the obtained illumination intensity and illumination duration, and sends data of the charging peak period and the charging valley period to the electric load peak-valley value control unit, so that the electric load peak-valley value control unit controls the charging management module to balance charging charges and discharging charges of the lead-acid storage battery pack.
Further, the bidirectional alternating current ammeter is connected among alternating current power distribution, an alternating current load and a switching power supply and used for measuring the electricity consumption of the alternating current load and the switching power supply.
Further, the bidirectional alternating current ammeter is connected among the charging management module, the lead-acid storage battery pack and the direct current bus and is used for metering the charging load of the photovoltaic power supply module, the charging load of the lead-acid storage battery pack and the electricity consumption of the lead-acid storage battery pack.
Still further, the charge management module includes a circuit switching unit and a timing unit; the circuit switching unit is used for switching the charging power of the lead-acid storage battery pack by the switching power supply and the photovoltaic power supply module; the timing unit is used for calculating the charging time of the lead-acid storage battery pack, the switching power supply and the switching photovoltaic power supply module.
Further, the photovoltaic power supply module comprises a plurality of solar panels and a photovoltaic controller; the solar panels are uniformly distributed in the allowable range of the position of the base station, and are connected with the circuit switching unit of the charging management module through the photovoltaic controller.
Further, the lead-acid storage battery pack comprises a monitoring module and M parallel lead-acid storage battery blocks, wherein M is an integer greater than 1; each lead-acid storage battery block comprises a current input switch, a battery electric quantity sensor, a lead-acid storage battery and a battery temperature sensor; the monitoring module is used for acquiring the total quantity of charge and discharge power requirements of the M parallel lead-acid storage battery blocks and the current total SOC; the current input switch is used for starting and stopping the charge and discharge of the lead-acid storage battery block; the battery electric quantity sensor is used for acquiring the current SOC of the connected lead-acid storage battery, and the battery temperature sensor is used for acquiring the battery temperature of the connected lead-acid storage battery;
furthermore, the monitoring module performs target power distribution according to the total charge and discharge required power of the M parallel lead-acid storage battery blocks and the current SOC of each lead-acid storage battery block.
Further, when the monitoring module distributes charging target power for the M parallel lead-acid storage battery blocks, the current SOC of each lead-acid storage battery block is arranged from large to small, so that the M parallel lead-acid storage battery blocks charge the lead-acid storage battery block with the minimum SOC preferentially when charging.
Further, when the monitoring module distributes the discharge target power of the M parallel lead-acid storage battery blocks, the current SOC of each lead-acid storage battery block is arranged from large to small, so that the M parallel lead-acid storage battery blocks discharge the lead-acid storage battery block with the largest SOC preferentially when being charged.
The beneficial effects of the invention compared with the prior art are as follows:
(1) In the invention, the photovoltaic power supply module is used as a photovoltaic system, so that a base station can directly supply power to equipment of a direct current load through direct current generated by the photovoltaic power supply module, and the direct current generated by the photovoltaic power supply module can be directly transmitted to a lead-acid storage battery pack through a charging management module for charging and energy storage, thereby effectively reducing the operation that the traditional energy storage system (alternating current-direct current conversion system) needs to perform alternating current-direct current conversion for a plurality of times, reducing the electric quantity loss and reducing the system cost;
(2) According to the invention, the main controller and the charging management module can enable the whole system to intelligently analyze the electricity generation rule and the electricity consumption rule of the base station according to weather forecast of the area where the base station is located, the electricity consumption of the commercial power, the electricity generation amount of the photovoltaic power supply module and the charge and discharge amount of the lead-acid storage battery, and then adjust the charging mode of the charging management module to the lead-acid storage battery and the energy storage application of the lead-acid storage battery according to the analyzed electricity generation rule and the electricity consumption rule by adopting a peak clipping and valley filling strategy, so that the lead-acid storage battery is ensured to have an active equalization function in the charging and discharging process, the conditions of overcharging, overdischarging and the like are avoided, the daily charging and discharging efficiency and the service life of the lead-acid storage battery are ensured, and the economic benefit of the whole energy storage system is also ensured;
(3) According to the invention, the power consumption load peak-valley value control unit of the main controller can analyze the power consumption load peak-valley value based on the weather condition of the position of the base station, the power consumption and the power supply condition of the commercial power and the photovoltaic power supply module, so that the main controller can reasonably configure the charging and discharging time period of the lead-acid storage battery pack, clean energy generated by the photovoltaic power supply module is efficiently utilized, and the power and the cost are saved;
(4) According to the invention, the circuit switching unit of the charging management module can reasonably distribute the photovoltaic charge quantity and the commercial charge quantity in the charging peak period and the charging valley period of the photovoltaic power supply module, so that the lead-acid storage battery pack has an active equalization function in the charging and discharging process; and the setting of the monitoring module can enable M parallel lead-acid storage battery blocks to automatically adjust the charge and discharge power according to the residual electric quantity of each lead-acid storage battery block, so that the conditions of overcharge, overdischarge and the like of the lead-acid storage battery blocks are prevented, and the daily charge and discharge efficiency and the service life of the whole lead-acid storage battery pack are ensured.
Drawings
FIG. 1 is a system block diagram of the present invention;
FIG. 2 is a block diagram of a master controller according to the present invention;
FIG. 3 is a block diagram illustrating a charge management module according to the present invention;
fig. 4 is a block diagram of the lead-acid battery of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a commercial power; 2. alternating current power distribution; 3. an alternating current load; 4. a main controller; 41. a weather detection unit; 42. a current amount metering unit; 421. a bidirectional ac electric meter; 422. a bidirectional DC ammeter; 43. a power load peak-valley control unit; 44. a data analysis unit; 5. a switching power supply; 6. a charging management module; 61. a circuit switching unit; 62. a timing unit; 7. a photovoltaic power supply module; 71. a solar cell panel; 72. a photovoltaic controller; 8. a lead acid battery pack; 81. a monitoring module; 82. a current input switch; 83. a battery power sensor; 84. a lead-acid battery; 85. a battery temperature sensor; 9. direct current power distribution; 10. and (3) a direct current load.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Embodiment one:
as shown in fig. 1-4, a base station light reserve power supply guarantee system based on a lead-acid storage battery comprises a commercial power 1, an alternating current power distribution 2, an alternating current load 3, a main controller 4, a switching power supply 5, a charging management module 6, a photovoltaic power supply module 7, a lead-acid storage battery pack 8, a direct current power distribution 9 and a direct current load 10; the utility power 1 is connected with the alternating current power distribution 2, the alternating current load 3 provides electric energy through the alternating current power distribution 2, one path of the alternating current power distribution 2 is connected with the switching power supply 5, the switching power supply 5 is connected with the main controller 4, one path of output end of the switching power supply 5 is connected to a direct current bus, the other path of output end of the switching power supply 5 is connected to the charging management module 6, the direct current bus is respectively connected with the lead-acid storage battery 8 and the direct current power distribution 9, the direct current power distribution 9 supplies power to the direct current load 10, the photovoltaic power supply module 7 outputs the electric energy to the charging management module 6 and then sends the electric energy to the lead-acid storage battery 8, and then the electric energy is output to the direct current bus through the lead-acid storage battery 8; the charging management module 6 is connected with the main controller 4, and the main controller 4 is used for acquiring weather forecast of an area where the base station is located, electricity consumption of the commercial power 1, electricity generation of the photovoltaic power supply module 7 and charge and discharge of the lead-acid storage battery 8, analyzing electricity generation rules and electricity consumption rules of the base station according to the acquired data, and adjusting a charging mode of the charging management module 6 to the lead-acid storage battery 8 and energy storage application of the lead-acid storage battery 8 by adopting a peak clipping and valley filling strategy according to the analyzed electricity generation rules and electricity consumption rules; the photovoltaic power supply module 7 is added as a photovoltaic system, so that a base station can directly supply power to equipment of a direct current load through direct current generated by the photovoltaic power supply module 7, and the direct current generated by the photovoltaic power supply module 7 can also be directly conveyed into the lead-acid storage battery pack 8 through the charging management module 6 for charging and energy storage, thereby effectively reducing the operation that the traditional energy storage system (alternating current-direct current conversion system) needs to perform alternating current-direct current conversion for a plurality of times, reducing electric quantity loss and reducing system cost; the lead-acid storage battery 8 can be used as not only standby electricity but also electricity storage, so that the lead-acid storage battery 8 can stably support the energy storage for daily charge and discharge; the main controller 4 and the charging management module 6 are used, so that the whole system can intelligently analyze the electricity generation rule and the electricity utilization rule of the base station according to weather forecast of the area where the base station is located, the electricity consumption of the commercial power 1, the electricity generation amount of the photovoltaic power supply module 7 and the charge and discharge amount of the lead-acid storage battery 8, and then the charging mode of the charging management module 6 to the lead-acid storage battery 8 and the energy storage application of the lead-acid storage battery 8 are adjusted by adopting a peak clipping and valley filling strategy according to the analyzed electricity generation rule and the electricity utilization rule, thereby ensuring that the lead-acid storage battery 8 has an active equalization function in the charging and discharging process, avoiding the conditions of overcharging, overdischarging and the like, ensuring the daily charging and discharging efficiency and the service life of the lead-acid storage battery 8, and ensuring the economic benefit of the whole energy storage system;
in a specific implementation of the present embodiment, the main controller 4 includes a weather detection unit 41, a current amount metering unit 42, a power load peak-to-valley control unit 43, and a data analysis unit 44; the weather detection unit 41 is configured to obtain weather conditions of a location of the base station, obtain an illumination intensity and an illumination duration of the current day of the location of the base station, and send the obtained illumination data to the data analysis unit 44; the electricity consumption amount metering unit 42 includes a bidirectional ac electric meter 421 and a bidirectional dc electric meter 422, the bidirectional ac electric meter 421 is used for metering ac electric amount of the utility power 1 and transmitting acquired electric amount data to the data analysis unit 44, and the bidirectional dc electric meter 422 is used for metering dc electric amount of the dc bus and transmitting acquired electric amount data to the data analysis unit 44; the data analysis unit 44 calculates a charging peak period and a charging valley period of the photovoltaic power supply module 7 according to the acquired illumination intensity and illumination duration, and sends data of the charging peak period and the charging valley period to the electric load peak-valley value control unit 43, so that the electric load peak-valley value control unit 43 controls the charging management module 6 to balance charging charges and discharging charges of the lead-acid storage battery pack 8; in this embodiment, the bidirectional ac electric meter 421 is connected between the ac power distribution 2, the ac load 3 and the switching power supply 5, and is used for measuring the power consumption of the ac load 3 and the switching power supply 5; in this embodiment, the bidirectional ac electric meter 422 is connected between the charge management module 6, the lead-acid battery pack 8 and the dc bus, and is used for measuring the charge load of the photovoltaic power supply module 7, the charge load of the lead-acid battery pack 8 and the power consumption of the lead-acid battery pack 8; the main controller 4 can analyze peak and valley values of power load based on weather conditions of the position of the base station, power consumption and power supply conditions of the commercial power 1 and the photovoltaic power supply module 7, so that the main controller 4 can reasonably configure charging and discharging time periods of the lead-acid storage battery pack 8, clean energy generated by the photovoltaic power supply module 7 is efficiently utilized, and the power and the cost are saved;
in a specific implementation of the present embodiment, the charging management module 6 includes a circuit switching unit 61 and a timing unit 62; the circuit switching unit 61 is used for switching the charging power of the lead-acid storage battery pack 8 by the switching power supply 5 and the photovoltaic power supply module 7; the timing unit 62 is used for calculating the charging time of the lead-acid storage battery 8, the switching power supply 5 and the switching photovoltaic power supply module 7; in the present embodiment, the photovoltaic power module 7 includes a plurality of solar panels 71 and a photovoltaic controller 72; the plurality of solar panels 71 are uniformly distributed in the allowable range of the position of the base station, and the plurality of solar panels 71 are connected with the circuit switching unit 61 of the charge management module 6 through the photovoltaic controller 72; in this embodiment, the lead-acid battery pack 8 includes a monitoring module 81 and M parallel lead-acid battery blocks, where M is an integer greater than 1; each lead-acid battery block includes a current input switch 82, a battery power sensor 83, a lead-acid battery 84, and a battery temperature sensor 85; the monitoring module 81 is used for obtaining the total charge and discharge power demand of the M parallel lead-acid storage battery blocks and the current total SOC; the current input switch 82 is used for starting and stopping the charge and discharge of the lead-acid storage battery block; the battery power sensor 83 is used for acquiring the current SOC of the connected lead-acid storage battery 84, and the battery temperature sensor 85 is used for acquiring the battery temperature of the connected lead-acid storage battery 84; in this embodiment, the monitoring module 81 performs target power allocation according to the total charge and discharge required power of the M parallel lead-acid battery blocks and the current SOC of each lead-acid battery block; in this embodiment, when the monitoring module 81 distributes the charging target power for the M parallel lead-acid storage battery blocks, the current SOC of each lead-acid storage battery block is arranged from large to small, so that the M parallel lead-acid storage battery blocks charge the lead-acid storage battery block with the smallest SOC preferentially when charging; in this embodiment, when the monitoring module 81 distributes the discharge target power for the M parallel lead-acid storage battery blocks, the current SOC of each lead-acid storage battery block is arranged from large to small, so that the M parallel lead-acid storage battery blocks discharge the lead-acid storage battery block with the largest SOC preferentially when charging; the circuit switching unit 61 of the charging management module 6 can reasonably distribute the photovoltaic charging amount and the commercial charging amount in the charging peak period and the charging valley period of the photovoltaic power supply module 7, so that the lead-acid storage battery pack 8 has an active equalization function in the charging and discharging process; and the setting of the monitoring module 81 can enable M parallel lead-acid storage battery blocks to automatically adjust the charge and discharge power according to the residual electric quantity of each lead-acid storage battery block, so that the conditions of overcharging, overdischarging and the like of the lead-acid storage battery blocks are prevented, and the daily charge and discharge efficiency and the service life of the whole lead-acid storage battery pack 8 are ensured.
In summary, the photovoltaic power supply module 7 of the base station light reserve power supply system based on the lead-acid storage battery provided by the invention is used as a photovoltaic system, so that the base station can directly supply power to equipment of a direct current load through direct current generated by the photovoltaic power supply module 7, and the direct current generated by the photovoltaic power supply module 7 can also be directly conveyed to the lead-acid storage battery set 8 through the charging management module 6 for charging and energy storage, thereby effectively reducing the operation that the traditional energy storage system (alternating current-direct current conversion system) needs to perform alternating current-direct current conversion for a plurality of times, reducing electric quantity loss and reducing system cost; the main controller 4 and the charging management module 6 can intelligently analyze the electricity generation rule and the electricity consumption rule of the base station according to weather forecast of the area where the base station is located, the electricity consumption of the commercial power 1, the electricity generation amount of the photovoltaic power supply module 7 and the electricity charging and discharging amount of the lead-acid storage battery 8, and then adjust the charging mode of the charging management module 6 to the lead-acid storage battery 8 and the energy storage application of the lead-acid storage battery 8 according to the analyzed electricity generation rule and the electricity consumption rule by adopting a peak clipping and valley filling strategy, so that the lead-acid storage battery 8 is ensured to have an active equalization function in the charging and discharging process, the conditions of overcharging, overdischarging and the like are avoided, the daily charging and discharging efficiency and the service life of the lead-acid storage battery 8 are ensured, and the economic benefit of the whole energy storage system is also ensured.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The base station light reserve power supply guarantee system based on the lead-acid storage battery is characterized by comprising a commercial power (1), an alternating current power distribution (2), an alternating current load (3), a main controller (4), a switching power supply (5), a charging management module (6), a photovoltaic power supply module (7), a lead-acid storage battery pack (8), a direct current power distribution (9) and a direct current load (10); the utility power supply (1) is connected with the alternating current power distribution (2), the alternating current load (3) provides electric energy through the alternating current power distribution (2), one path of the alternating current power distribution (2) is connected with the switching power supply (5), the switching power supply (5) is connected with the main controller (4), one path of output end of the switching power supply (5) is connected to the direct current bus, the other path of output end of the switching power supply is connected to the charging management module (6), the direct current bus is respectively connected with the lead-acid storage battery pack (8) and the direct current power distribution (9), the direct current power distribution (9) supplies power to the direct current load (10), and the photovoltaic power supply module (7) outputs the electric energy to the charging management module (6) and then sends the electric energy to the lead-acid storage battery pack (8) and then outputs the electric energy to the direct current bus through the lead-acid storage battery pack (8); the charging management module (6) is connected with the main controller (4), the main controller (4) is used for acquiring weather forecast of an area where the base station is located, electricity consumption of the commercial power (1), electricity generation of the photovoltaic power supply module (7) and charging and discharging capacity of the lead-acid storage battery (8), analyzing electricity generation rules and electricity consumption rules of the base station according to acquired data, and adjusting charging mode of the charging management module (6) on the lead-acid storage battery (8) and energy storage application of the lead-acid storage battery (8) by adopting peak clipping and valley filling strategies according to the analyzed electricity generation rules and electricity consumption rules.
2. The lead-acid battery-based base station light reserve power supply guarantee system as claimed in claim 1, wherein: the main controller (4) comprises a weather detection unit (41), a current consumption amount metering unit (42), a power consumption load peak-valley value control unit (43) and a data analysis unit (44); the weather detection unit (41) is used for acquiring weather conditions of the position of the base station, obtaining illumination intensity and illumination duration of the current day of the position of the base station, and sending the obtained illumination data to the data analysis unit (44); the electricity consumption amount metering unit (42) comprises a bidirectional alternating current ammeter (421) and a bidirectional direct current ammeter (422), the bidirectional alternating current ammeter (421) is used for metering alternating current electric quantity of the mains supply (1) and sending acquired electric quantity data to the data analysis unit (44), and the bidirectional direct current ammeter (422) is used for metering direct current electric quantity of a direct current bus and sending the acquired electric quantity data to the data analysis unit (44); the data analysis unit (44) calculates a charging peak period and a charging valley period of the photovoltaic power supply module (7) according to the obtained illumination intensity and illumination duration, and sends data of the charging peak period and the charging valley period to the electric load peak-valley value control unit (43), so that the electric load peak-valley value control unit (43) controls the charging management module (6) to balance the charging charge and the discharging charge of the lead-acid storage battery pack (8).
3. A lead-acid battery-based base station optical reserve power supply guarantee system as claimed in claim 2, wherein: the bidirectional alternating current ammeter (421) is connected among the alternating current distribution (2), the alternating current load (3) and the switching power supply (5) and is used for measuring the electricity consumption of the alternating current load (3) and the switching power supply (5).
4. A lead-acid battery-based base station optical reserve power supply guarantee system as claimed in claim 2, wherein: the bidirectional alternating current ammeter (422) is connected between the charging management module (6), the lead-acid storage battery (8) and the direct current bus and is used for metering the charging load of the photovoltaic power supply module (7), the charging load of the lead-acid storage battery (8) and the electricity consumption of the lead-acid storage battery (8).
5. The lead-acid battery-based base station light reserve power supply guarantee system as claimed in claim 4, wherein: the charging management module (6) comprises a circuit switching unit (61) and a timing unit (62); the circuit switching unit (61) is used for switching the charging power of the lead-acid storage battery (8) by the switching power supply (5) and the photovoltaic power supply module (7); the timing unit (62) is used for calculating the charging time of the lead-acid storage battery (8), the switching power supply (5) and the switching photovoltaic power supply module (7).
6. The lead-acid battery-based base station light reserve power supply guarantee system as claimed in claim 5, wherein: the photovoltaic power supply module (7) comprises a plurality of solar panels (71) and a photovoltaic controller (72); the solar panels (71) are uniformly distributed in the allowable range of the position of the base station, and the solar panels (71) are connected with the circuit switching unit (61) of the charging management module (6) through the photovoltaic controller (72).
7. The lead-acid battery-based base station light reserve power supply guarantee system as claimed in claim 5, wherein: the lead-acid storage battery pack (8) comprises a monitoring module (81) and M parallel lead-acid storage battery blocks, wherein M is an integer greater than 1; each of the lead-acid battery blocks includes a current input switch (82), a battery charge sensor (83), a lead-acid battery (84), and a battery temperature sensor (85); the monitoring module (81) is used for acquiring the total charge and discharge power demand quantity and the current total SOC of the M parallel lead-acid storage battery blocks; the current input switch (82) is used for starting and stopping the charge and discharge of the lead-acid storage battery block; the battery power sensor (83) is used for acquiring the current SOC of the connected lead-acid storage battery (84), and the battery temperature sensor (85) is used for acquiring the battery temperature of the connected lead-acid storage battery (84).
8. The lead-acid battery-based base station light reserve power supply guarantee system as claimed in claim 7, wherein: and the monitoring module (81) performs target power distribution according to the total charge and discharge required power of the M parallel lead-acid storage battery blocks and the current SOC of each lead-acid storage battery block.
9. The lead-acid battery-based base station light reserve power supply guarantee system as claimed in claim 8, wherein: when the monitoring module (81) distributes charging target power for the M parallel lead-acid storage battery blocks, the current SOC of each lead-acid storage battery block is arranged from large to small, so that the lead-acid storage battery blocks with the minimum SOC are charged preferentially by the M parallel lead-acid storage battery blocks during charging.
10. The lead-acid battery-based base station light reserve power supply guarantee system as claimed in claim 8, wherein: when the monitoring module (81) distributes the discharge target power of the M parallel lead-acid storage battery blocks, the current SOC of each lead-acid storage battery block is arranged from large to small, so that the M parallel lead-acid storage battery blocks discharge the lead-acid storage battery block with the largest SOC preferentially when being charged.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937633A (en) * | 2024-03-21 | 2024-04-26 | 北京泰岳天成科技有限公司 | Power supply system scheduling method, power supply system scheduling device and communication station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937633A (en) * | 2024-03-21 | 2024-04-26 | 北京泰岳天成科技有限公司 | Power supply system scheduling method, power supply system scheduling device and communication station |
| CN117937633B (en) * | 2024-03-21 | 2024-05-31 | 北京泰岳天成科技有限公司 | Power supply system scheduling method, power supply system scheduling device and communication station |
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