CN111162552A - Peak clipping and valley filling method applied to communication base station power supply - Google Patents
Peak clipping and valley filling method applied to communication base station power supply Download PDFInfo
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- CN111162552A CN111162552A CN202010069974.0A CN202010069974A CN111162552A CN 111162552 A CN111162552 A CN 111162552A CN 202010069974 A CN202010069974 A CN 202010069974A CN 111162552 A CN111162552 A CN 111162552A
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
Abstract
The invention provides a peak clipping and valley filling method applied to a communication base station power supply, which belongs to the field of power supply management and comprises the following steps: step S1, sending a power failure command to the battery manager when power fails; step S2, detecting whether the relay is attracted, and if yes, prompting a fault; if not, go to step S3; step S3, judging whether the electric quantity of the lithium battery is less than 15%, and if so, prompting a fault; if not, sending a command of closing the relay, and entering the step S4; step S4, judging whether the relay is attracted, if yes, entering step S5; if not, prompting a fault, and entering the step S3; step S5, the lithium battery supplies power to the direct current load, whether a call is coming or not is judged, and if not, the step S6 is executed; if yes, carrying out peak clipping and valley filling according to the current time period; step S6, judging whether the electric quantity of the lithium battery is less than 15%, and if so, prompting a fault; if not, the process proceeds to step S5. The invention has the advantages that: the performance of the lithium battery is fully utilized, and the reliability of the power supply of the communication base station is greatly improved.
Description
Technical Field
The invention relates to the field of power supply management, in particular to a peak clipping and valley filling method applied to a communication base station power supply.
Background
In order to guarantee uninterrupted communication, an emergency energy storage power supply needs to be configured in a machine room of the communication base station besides the power supply of the communication base station through a power grid, so that the base station can work continuously when power is cut off. The emergency energy storage power supply of the base station mainly adopts a lead-acid battery or a lithium battery, and as the lithium battery has low pollution, long service life and other excellent performances, along with the continuous reduction of the cost of the lithium battery, the economy of the emergency energy storage power supply begins to be remarkable, and more lithium batteries are adopted in newly-added base stations and gradually replace the lead-acid battery of the built base station.
The lithium iron phosphate battery can be charged and discharged for about 3000 times in the whole life cycle, but the existing base station only needs 4 to 6 times per year in a pure power supply mode, and the performance of the lithium battery is greatly wasted.
Therefore, how to provide a peak clipping and valley filling method applied to a communication base station power supply to fully utilize the performance of a lithium battery and improve the reliability of the communication base station power supply becomes a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a peak clipping and valley filling method applied to a communication base station power supply, so that the performance of a lithium battery is fully utilized, and the reliability of the communication base station power supply is improved.
The invention is realized by the following steps: a peak clipping and valley filling method applied to a communication base station power supply comprises the following steps:
step S10, setting a charging time interval, a discharging time interval and a first threshold, judging whether the power grid has power failure by the energy storage converter, if so, sending a power failure command to the battery manager by the energy storage converter, and entering step S20; if not, go to step S70;
step S20, after the battery manager receives the power failure command, the lithium battery supplies power to the direct current load through the diode, detects whether the relay is attracted, if so, prompts that the relay has attracted a fault, and ends the process; if not, go to step S30;
step S30, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, prompting the over-discharge fault of the lithium battery, and ending the process; if not, sending a command of attracting the relay to the battery shunt, and entering the step S40;
step S40, judging whether the relay is attracted, if yes, entering step S50; if not, prompting that the relay does not pick up the fault, and entering the step S30;
step S50, the lithium battery supplies power to the direct current load through the relay, the energy storage converter judges whether the power grid is powered on, if not, the step S60 is executed; if yes, go to step S70;
step S60, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, prompting the over-discharge fault of the lithium battery, and ending the process; if not, go to step S50;
step S70, determining whether the current time belongs to the charging time interval or the discharging time interval, and if the current time belongs to the charging time interval, entering step S80; if it is the discharging time period, go to step S90;
step S80, the energy storage converter converts the alternating current of the power grid into direct current and then charges the lithium battery;
and step S90, the energy storage converter converts the direct current of the lithium battery into alternating current and then transmits the electric energy to the power grid.
Further, the charging period is a period in which the electricity rate is lower than the average price; the discharging period is a period in which the electricity rate is higher than the average price.
Further, the step S80 specifically includes:
step S81, setting a second threshold; the battery manager sends a charging command to the energy storage converter;
step S82, the battery manager judges whether the energy storage converter executes the charging command, if yes, the step S83 is executed; if not, go to step S81;
step S83, judging whether the percentage of the electric quantity of the lithium battery exceeds the second threshold value, if so, prompting an overcharge fault of the lithium battery, and ending the process; if not, go to step S84;
step S84, after the energy storage converter converts the alternating current of the power grid into direct current, the lithium battery is charged, whether the current time interval is a charging time interval or not is judged, and if yes, the step S85 is executed; if not, the battery manager sends a charging stopping command to the energy storage converter, and the step S86 is carried out;
step S85, judging whether the percentage of the electric quantity of the lithium battery is larger than the second threshold value, if so, stopping charging and ending the process; if not, go to step S84;
step S86, the battery manager judges whether the lithium battery is still charged, if yes, the fault warning of the energy storage converter is prompted; if not, the flow is ended.
Further, the step S90 specifically includes:
step S91, the battery manager sends a discharging command to the energy storage converter;
step S92, the battery manager judges whether the energy storage converter executes the discharging command, if yes, the step S93 is executed; if not, go to step S91;
step S93, judging whether the percentage of the electric quantity of the lithium battery is lower than the first threshold value, if so, prompting an overdischarge fault of the lithium battery, and ending the process; if not, go to step S94;
step S94, after the energy storage converter converts the direct current of the lithium battery into alternating current, the electric energy is transmitted to a power grid, whether the current time interval is a discharging time interval or not is judged, and if yes, the step S95 is executed; if not, the battery manager sends a discharge stopping command to the energy storage converter, and the step S96 is carried out;
step S95, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, stopping discharging and ending the process; if not, go to step S94;
step S96, the battery manager judges whether the lithium battery is still discharging, if yes, the fault warning of the energy storage converter is prompted; if not, the flow is ended.
The invention has the advantages that:
by setting the charging time interval and the discharging time interval, on the premise that the power grid is not powered off, if the power grid is in the charging time interval and the lithium battery is not overcharged, the energy storage converter converts alternating current of the power grid into direct current and then charges the lithium battery; in the discharging period, and the lithium battery is not over-discharged, the energy storage converter converts direct current of the lithium battery into alternating current and then transmits the electric energy to a power grid, namely peak clipping and valley filling are carried out, and the performance of the lithium battery is fully utilized; through setting up first threshold value and second threshold value, whether control the lithium cell at every moment overcharge or overdischarge, very big promotion communication base station power reliability.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flow chart of a peak clipping and valley filling method applied to a power supply of a communication base station according to the present invention.
Fig. 2 is a flow chart of the charging period of the present invention.
Fig. 3 is a flow chart of the discharge period of the present invention.
Fig. 4 is a schematic block diagram of a dc energy storage backup power supply applied to a base station according to the present invention.
Fig. 5 is a schematic block circuit diagram of a lithium battery pack according to the present invention.
Fig. 6 is a circuit diagram of the current splitter of the present invention.
Fig. 7 is a schematic diagram of an application of a dc energy storage backup power source applied to a base station according to the present invention.
Description of the labeling:
100-a direct current energy storage backup power supply applied to a base station, 1-a circuit breaker, 2-alternating current distribution equipment, 3-an energy storage converter, 4-a communication module, 5-a cloud server, 6-a switching power supply, 7-direct current distribution equipment, 8-a current collector, 9-a current splitter group, 10-a lithium battery group, 11-a direct current load, 12-an alternating current load, 13-a power grid, 91-a current splitter, 911-port A, 912-port B, 913-a diode, 914-a relay, 101-a battery pack, 1011-a lithium battery and 1012-a battery manager.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: setting a charging time interval, a discharging time interval, a first threshold value for judging whether the lithium battery 1011 is over-discharged and a second threshold value for judging whether the lithium battery 1011 is over-charged, when the power grid 13 is powered off, the battery manager 1012 controls the lithium battery 1011 to supply power to the direct current load 11, and when the electric quantity percentage of the lithium battery 1011 is smaller than the first threshold value or the power grid 13 is powered on, the discharging is stopped; when the power grid 13 receives an incoming call, if the charging period is in the charging period and the percentage of the electric quantity of the lithium battery 1011 does not exceed the second threshold, the energy storage converter 3 converts the alternating current of the power grid 13 into direct current and then charges the lithium battery 1011; if the lithium battery 1011 is in the discharging period and the percentage of the electric quantity of the lithium battery 1011 is not lower than the first threshold, the energy storage converter 3 converts the direct current of the lithium battery 1011 into alternating current and then transmits the electric energy to the power grid 13.
Referring to fig. 1 to 7, a dc energy storage backup power supply 100 applied to a base station according to the present invention includes a circuit breaker 1, an ac power distribution device 2, an energy storage converter (PCS)3, a communication module 4, a cloud server 5, a switching power supply 6, a dc power distribution device 7, a current collector 8, a current splitter group 9, and a lithium battery group 10;
the circuit breaker 1 is used for switching on and off the backup power supply 100 and the power grid 13; the alternating current distribution equipment 2 is used for distributing alternating current; the energy storage converter 3 is used for controlling the charging and discharging processes of the lithium battery pack 10 and performing alternating current-direct current conversion; the communication module 4 is used for converting serial port data and IP data and transmitting the serial port data and the IP data in a wireless mode, and the communication module 4 can be a GPRS communication module or a WIFI communication module in specific implementation; the cloud server 5 is used for remotely receiving the operation data and the operation state of the energy storage converter 3, remotely turning on and off the energy storage converter 3 and the like; the switching power supply 6 is used for converting alternating current into direct current; the direct current distribution equipment 7 is used for distributing direct current; the current collector 8 is configured to collect a current output from the current splitter group 9 to the dc power distribution device 7, and send the current to the energy storage converter 3, so as to determine an operating mode of the lithium battery pack 10, and in specific implementation, only a current collector capable of achieving the function is selected from the prior art, which is not limited to any type, and is available to those skilled in the art without creative work; the current shunt group 9 is configured to shunt the current output by the lithium battery pack 10, wherein one path of the current is output to the energy storage converter 3, and the other path of the current is output to the direct current distribution device 7; the lithium battery pack 10 is used for storing electric energy of a power grid 13, supplying power to a direct current load 11 and an alternating current load 12, or transmitting the stored electric energy to the power grid 13;
one end of the alternating current distribution equipment 2 is connected with the circuit breaker 1, and the other end of the alternating current distribution equipment is connected with the energy storage converter 3 and the switch power supply 6; one end of the communication module 4 is respectively connected with the energy storage converter 3 and the lithium battery pack 10, and the other end of the communication module is connected with the cloud server 5; the current collector 8, the current shunt group 9 and the lithium battery pack 10 are respectively connected with the energy storage converter 3; one end of the current shunt group 9 is connected with the lithium battery pack 10, and the other end of the current shunt group is respectively connected with the current collector 8, the switching power supply 6 and the direct current distribution equipment 7.
The lithium battery pack 10 includes a plurality of battery packs 101; each of the battery packs includes a lithium battery 1011 and a Battery Manager (BMS) 1012; the battery manager 1012 is used for managing the lithium battery 1011, improving the utilization rate of the lithium battery 1011, and avoiding overcharge and overdischarge, and in specific implementation, only a battery manager capable of realizing the function is selected from the prior art, and the battery manager is not limited to any model, which can be obtained by a person skilled in the art without creative work;
the communication module 4 is connected with the lithium battery pack 10, specifically, the communication module 4 is connected with the battery manager 1012, and the cloud server 5 sequentially acquires the parameter information of the lithium battery 1011 through the communication module 4 and the battery manager 1012.
One end of the lithium battery 1011 is connected with the current shunt group 9, and the other end is connected with the battery manager 1012; the battery manager 1012 is connected to the current splitter group 9 and the energy storage converter 3, respectively.
The lithium battery pack 10 is connected with the energy storage converter 3 and specifically comprises the following steps:
the lithium battery pack 10 is connected with the energy storage converter 3 through a CAN bus; the CAN belongs to the field bus category and is a serial communication network which effectively supports distributed control or real-time control.
The current splitter group 9 comprises a plurality of current splitters 91; the current splitter 91 includes a port a911, a port B912, a diode 913, and a relay 914; the diode 913 is used to prevent the current from flowing backwards; the relay 914 is used for conducting the lithium battery pack 10 and the direct current distribution equipment 7, and is controlled by the battery manager 1012;
one end of the port A911 is connected with the anode of the lithium battery pack 10, and the other end is divided into two paths to be respectively connected with the energy storage converter 3 and the direct current distribution equipment 7; one end of the port B912 is connected with the negative electrode of the lithium battery pack 10, the other end of the port B912 is divided into two paths, one path is connected with the energy storage converter 3, and the other path is connected with the direct current distribution equipment 7 through the diode 913; the output end of the diode 913 is connected to the port B912; the relay 914 is connected in parallel to the diode 913, and is connected to the lithium battery pack 10.
The energy storage converter 3 is provided with a touch display screen (not shown) for operating the energy storage converter 3.
The invention relates to a preferred embodiment of a peak clipping and valley filling method applied to a communication base station power supply, which comprises the following steps:
step S10, setting a charging time interval, a discharging time interval and a first threshold, judging whether the power grid has power failure by the energy storage converter, if so, sending a power failure command to the battery manager by the energy storage converter, and entering step S20; if not, go to step S70; the first threshold is preferably 15%;
step S20, after the battery manager receives the power failure command, the lithium battery supplies power to the direct current load through the diode, detects whether the relay is attracted, if so, prompts that the relay has attracted a fault, and ends the process; if not, go to step S30; continuously detecting for 3 times when detecting whether the relay is attracted, and prompting that the relay has an attraction fault if the relay is attracted for 3 times so as to prevent misjudgment;
step S30, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, prompting the over-discharge fault of the lithium battery, and ending the process; if not, sending a command of attracting the relay to the battery shunt, and entering the step S40;
step S40, judging whether the relay is attracted, if yes, entering step S50; if not, prompting that the relay does not pick up the fault, and entering the step S30; continuously detecting for 3 times when judging whether the relay is attracted, and prompting the non-attraction fault of the relay if the relay is not attracted for 3 times so as to prevent misjudgment;
step S50, the lithium battery supplies power to the direct current load through the relay, the energy storage converter judges whether the power grid is powered on, if not, the step S60 is executed; if yes, go to step S70; when the power grid is powered off, the lithium battery uninterruptedly supplies power to the direct current load through the diode, and in order to avoid excessive heating after the diode is conducted, the diode is bypassed by the relay, namely the direct current load is supplied with power through the relay;
step S60, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, prompting the over-discharge fault of the lithium battery, and ending the process; if not, go to step S50;
step S70, determining whether the current time belongs to the charging time interval or the discharging time interval, and if the current time belongs to the charging time interval, entering step S80; if it is the discharging time period, go to step S90;
step S80, the energy storage converter converts the alternating current of the power grid into direct current and then charges the lithium battery;
and step S90, the energy storage converter converts the direct current of the lithium battery into alternating current and then transmits the electric energy to the power grid.
The charging time interval is a time interval when the electricity charge is lower than the average price; the discharging period is a period in which the electricity rate is higher than the average price.
The step S80 specifically includes:
step S81, setting a second threshold; the battery manager sends a charging command to the energy storage converter; the second threshold is preferably 95%; by setting the first threshold and the second threshold, whether the lithium battery is overcharged or overdischarged is monitored constantly, so that the reliability of a communication base station power supply (a direct-current energy storage backup power supply 100 applied to a base station) is greatly improved;
step S82, the battery manager judges whether the energy storage converter executes the charging command, if yes, the step S83 is executed; if not, go to step S81; the battery manager needs to continuously judge for 3 times when judging whether the energy storage converter executes the charging command so as to prevent misjudgment;
step S83, judging whether the percentage of the electric quantity of the lithium battery exceeds the second threshold value, if so, prompting an overcharge fault of the lithium battery, and ending the process; if not, go to step S84;
step S84, after the energy storage converter converts the alternating current of the power grid into direct current, the lithium battery is charged, whether the current time interval is a charging time interval or not is judged, and if yes, the step S85 is executed; if not, the battery manager sends a charging stopping command to the energy storage converter, and the step S86 is carried out;
step S85, judging whether the percentage of the electric quantity of the lithium battery is larger than the second threshold value, if so, stopping charging and ending the process; if not, go to step S84;
step S86, the battery manager judges whether the lithium battery is still charged, if yes, the fault warning of the energy storage converter is prompted; if not, the flow is ended. The battery manager judges whether the lithium battery needs to be continuously detected for 3 times when the lithium battery is still charged, and if the lithium battery is still charged after the lithium battery is detected for 3 times, the fault alarm of the energy storage converter is prompted to prevent misjudgment.
The step S90 specifically includes:
step S91, the battery manager sends a discharging command to the energy storage converter;
step S92, the battery manager judges whether the energy storage converter executes the discharging command, if yes, the step S93 is executed; if not, go to step S91; the battery manager needs to continuously judge for 3 times when judging whether the energy storage converter executes the discharge command so as to prevent misjudgment;
step S93, judging whether the percentage of the electric quantity of the lithium battery is lower than the first threshold value, if so, prompting an overdischarge fault of the lithium battery, and ending the process; if not, go to step S94;
step S94, after the energy storage converter converts the direct current of the lithium battery into alternating current, the electric energy is transmitted to a power grid, whether the current time interval is a discharging time interval or not is judged, and if yes, the step S95 is executed; if not, the battery manager sends a discharge stopping command to the energy storage converter, and the step S96 is carried out;
step S95, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, stopping discharging and ending the process; if not, go to step S94;
step S96, the battery manager judges whether the lithium battery is still discharging, if yes, the fault warning of the energy storage converter is prompted; if not, the flow is ended. The battery manager judges whether the lithium battery needs to be continuously detected for 3 times when the lithium battery is still discharged, and if the lithium battery is still discharged for 3 times, the fault alarm of the energy storage converter is prompted to prevent misjudgment.
In summary, the invention has the advantages that:
by setting the charging time interval and the discharging time interval, on the premise that the power grid is not powered off, if the power grid is in the charging time interval and the lithium battery is not overcharged, the energy storage converter converts alternating current of the power grid into direct current and then charges the lithium battery; in the discharging period, and the lithium battery is not over-discharged, the energy storage converter converts direct current of the lithium battery into alternating current and then transmits the electric energy to a power grid, namely peak clipping and valley filling are carried out, and the performance of the lithium battery is fully utilized; through setting up first threshold value and second threshold value, whether control the lithium cell at every moment overcharge or overdischarge, very big promotion communication base station power reliability.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (4)
1. A peak clipping and valley filling method applied to a communication base station power supply is characterized in that: the method comprises the following steps:
step S10, setting a charging time interval, a discharging time interval and a first threshold, judging whether the power grid has power failure by the energy storage converter, if so, sending a power failure command to the battery manager by the energy storage converter, and entering step S20; if not, go to step S70;
step S20, after the battery manager receives the power failure command, the lithium battery supplies power to the direct current load through the diode, detects whether the relay is attracted, if so, prompts that the relay has attracted a fault, and ends the process; if not, go to step S30;
step S30, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, prompting the over-discharge fault of the lithium battery, and ending the process; if not, sending a command of attracting the relay to the battery shunt, and entering the step S40;
step S40, judging whether the relay is attracted, if yes, entering step S50; if not, prompting that the relay does not pick up the fault, and entering the step S30;
step S50, the lithium battery supplies power to the direct current load through the relay, the energy storage converter judges whether the power grid is powered on, if not, the step S60 is executed; if yes, go to step S70;
step S60, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, prompting the over-discharge fault of the lithium battery, and ending the process; if not, go to step S50;
step S70, determining whether the current time belongs to the charging time interval or the discharging time interval, and if the current time belongs to the charging time interval, entering step S80; if it is the discharging time period, go to step S90;
step S80, the energy storage converter converts the alternating current of the power grid into direct current and then charges the lithium battery;
and step S90, the energy storage converter converts the direct current of the lithium battery into alternating current and then transmits the electric energy to the power grid.
2. The peak-clipping and valley-filling method applied to a power supply of a communication base station as claimed in claim 1, wherein: the charging time interval is a time interval when the electricity charge is lower than the average price; the discharging period is a period in which the electricity rate is higher than the average price.
3. The peak-clipping and valley-filling method applied to a power supply of a communication base station as claimed in claim 1, wherein: the step S80 specifically includes:
step S81, setting a second threshold; the battery manager sends a charging command to the energy storage converter;
step S82, the battery manager judges whether the energy storage converter executes the charging command, if yes, the step S83 is executed; if not, go to step S81;
step S83, judging whether the percentage of the electric quantity of the lithium battery exceeds the second threshold value, if so, prompting an overcharge fault of the lithium battery, and ending the process; if not, go to step S84;
step S84, after the energy storage converter converts the alternating current of the power grid into direct current, the lithium battery is charged, whether the current time interval is a charging time interval or not is judged, and if yes, the step S85 is executed; if not, the battery manager sends a charging stopping command to the energy storage converter, and the step S86 is carried out;
step S85, judging whether the percentage of the electric quantity of the lithium battery is larger than the second threshold value, if so, stopping charging and ending the process; if not, go to step S84;
step S86, the battery manager judges whether the lithium battery is still charged, if yes, the fault warning of the energy storage converter is prompted; if not, the flow is ended.
4. The peak-clipping and valley-filling method applied to a power supply of a communication base station as claimed in claim 1, wherein: the step S90 specifically includes:
step S91, the battery manager sends a discharging command to the energy storage converter;
step S92, the battery manager judges whether the energy storage converter executes the discharging command, if yes, the step S93 is executed; if not, go to step S91;
step S93, judging whether the percentage of the electric quantity of the lithium battery is lower than the first threshold value, if so, prompting an overdischarge fault of the lithium battery, and ending the process; if not, go to step S94;
step S94, after the energy storage converter converts the direct current of the lithium battery into alternating current, the electric energy is transmitted to a power grid, whether the current time interval is a discharging time interval or not is judged, and if yes, the step S95 is executed; if not, the battery manager sends a discharge stopping command to the energy storage converter, and the step S96 is carried out;
step S95, judging whether the percentage of the electric quantity of the lithium battery is smaller than the first threshold value, if so, stopping discharging and ending the process; if not, go to step S94;
step S96, the battery manager judges whether the lithium battery is still discharging, if yes, the fault warning of the energy storage converter is prompted; if not, the flow is ended.
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Cited By (4)
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| CN111917121A (en) * | 2020-06-30 | 2020-11-10 | 嘉善数能技术有限公司 | Control method for power consumption time period peak clipping and valley filling power supply of communication base station |
| CN111917122A (en) * | 2020-06-30 | 2020-11-10 | 嘉善数能技术有限公司 | Peak clipping and valley filling power supply control method for communication base station |
| CN112803459A (en) * | 2021-01-26 | 2021-05-14 | 福建时代星云科技有限公司 | Uninterruptible power supply with peak clipping, valley filling and quick charging functions and use method |
| CN113394867A (en) * | 2021-05-27 | 2021-09-14 | 利天万世新能源有限公司 | Intelligent control energy storage system of 5G communication equipment |
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| CN111917122A (en) * | 2020-06-30 | 2020-11-10 | 嘉善数能技术有限公司 | Peak clipping and valley filling power supply control method for communication base station |
| CN111917121B (en) * | 2020-06-30 | 2023-08-18 | 嘉善利天万世新能源有限公司 | Power supply control method for peak clipping and valley filling in power utilization period of communication base station |
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| CN113394867A (en) * | 2021-05-27 | 2021-09-14 | 利天万世新能源有限公司 | Intelligent control energy storage system of 5G communication equipment |
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