Background
The storage battery for the power system is generally used as a backup power supply in a communication power supply of the power system, and the safety of the storage battery directly influences the safety of the power system. As is well known, the ac power supply is very easily affected by typhoon, thunder and lightning, abnormal load and other factors, if the ac power supply of the communication power supply is interrupted, the matched storage battery can directly supply power to the load on the bus of the communication power supply, so that the communication power supply system can normally operate. However, the battery pack adopts a serial connection method, the performance and the service life of the battery pack are difficult to predict, and when one battery cell is open or fails, the whole battery pack can lose the standby capacity, and once the alternating current power supply is abnormal and the battery pack fails, all communication is paralyzed, serious accidents can occur, and the risk of serious loss is caused.
At present, a lead-acid storage battery is generally adopted as a backup power supply for communication guarantee in power communication, the core reason of adopting the lead-acid storage battery as the backup power supply is the safety of the lead-acid storage battery, and the lead-acid storage battery has a history of safe operation for more than 100 years, because the possibility of burning and explosion of the battery is eliminated from the working principle of the lead-acid storage battery; secondly, the production materials and technology of the lead-acid storage battery are very mature, the cost is very low, the power density of the lead-acid storage battery is not large, but the battery for the power transformer substation has no special requirements on the power density and the volume of the storage battery, and the construction of the transformer substation with huge investment must be safely put in the first place; other types of batteries are currently difficult to match in terms of safety to lead-acid batteries, and therefore lead-acid batteries remain for long periods of time as backup power sources for power systems.
After the storage battery is put into operation, when the storage battery of the transformer substation communication power supply is found to be unqualified and needs to be replaced, due to the requirement of an internal management system of a power system, any material purchase needs to go through a purchase approval process, and a storage battery purchase process needs to be started until the storage battery purchase is completed, so that the storage battery can not be replaced in a plurality of months after the problem battery is found, and the communication power supply system operates with diseases, so that great potential safety hazards exist.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides an emergency guarantee system for a communication storage battery for electric power, and the technical scheme of the utility model is as follows:
the utility model provides an emergent guarantee system of communication battery for electric power, includes a plurality of battery monomer, connecting wire, collection board, balanced module, switch control board, main control board and power strip, wherein
The connecting wire realizes that the storage battery monomer with the corresponding serial number is connected with the storage battery monomer of the original power system in parallel;
the acquisition board is connected with the storage battery monomer and is used for monitoring the voltage of the storage battery monomer;
the equalization module is connected with the storage battery monomer, and determines to charge or discharge the storage battery monomer according to the voltage information of the storage battery monomer collected by the collection plate, so that the charge voltage of the storage battery monomer is ensured to be consistent;
the switching control board is connected with the equalization module, and switches the anode and the cathode of the storage battery monomer to be charged out according to the voltage information of the storage battery monomer acquired by the acquisition board and is connected to an external charging power supply;
the main control board is connected with the acquisition board and the switching control board, and decides whether to decide the charging of a certain storage battery monomer and whether to rotate to other storage battery monomers according to the storage battery monomer voltage information acquired by the acquisition board;
the power panel is connected with the switching control panel and the main control panel, and is used for providing power for the main control panel and supplying power for the equalization module.
Further, the acquisition board detects the single voltage of the storage battery by a voltage division method or a differential input method.
Further, the acquisition board further comprises a temperature detection module, wherein the temperature detection module is used for detecting the temperature of the storage battery monomer.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The bridge connection channel between two groups of storage battery packs is established through the connecting wire, when a certain storage battery pack has a circuit breaker or has larger internal resistance, the electric energy of the charging and discharging of the storage battery packs can be transmitted in a roundabout way from the bridge connection channel, the storage battery packs which have failed are enabled to be supplied with electric power due to the fact that backup roundabout channels exist, and the mode meets the requirements of emergency repair of the failure of the storage battery of the transformer substation;
(2) In some scenes of local power supply need and other power supply sources may be omitted, then the method provided by the utility model can be adopted to obtain staged energy output by adopting various failed storage battery packs, so that the energy requirement under a specific environment is met;
(3) In the field of mobile communication, a mobile communication base station is normally provided with double groups of storage batteries, and the method provided by the utility model can also provide a certain degree of help for power failure and endurance of the mobile base station;
(4) In a plurality of storage battery recovery and disposal environments, as the recovered storage batteries are scrapped, the method provided by the utility model can be used for obtaining certain power supply by utilizing the scrapped storage batteries, and in some storage battery collection warehouse scenes, the direct current power supply provided by the scrapped storage batteries can be obtained by adopting the method, and if a small-power inverter is added, the alternating current power supply can be obtained;
(5) In real life, the environment where the storage battery exists is mainly provided, and the power supply can be easily obtained by adopting the utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the communication battery emergency guarantee system for electric power of the present utility model comprises a plurality of battery units, a connecting wire 1, a collecting board 2, an equalizing module 3, a switching control board 4, a main control board 5 and a power board 6, wherein
The connecting wire 1 realizes that the storage battery monomer with the corresponding serial number is connected with the storage battery monomer of the original power system in parallel;
the acquisition board 2 is connected with the storage battery monomer and is used for monitoring the voltage of the storage battery monomer;
the equalization module 3 is connected with the storage battery monomer, and determines to charge or discharge the storage battery monomer according to the voltage information of the storage battery monomer collected by the collection plate 2, so as to ensure that the charging voltage of the storage battery monomer is consistent;
the switching control board 4 is connected with the equalization module 3, and switches the anode and the cathode of the storage battery monomer to be charged out according to the voltage information of the storage battery monomer acquired by the acquisition board 2 and is connected to an external charging power supply;
the main control board 5 is connected with the acquisition board 2 and the switching control board 4, and decides whether to charge a certain storage battery monomer or not and whether to rotate to other storage battery monomers or not according to the storage battery monomer voltage information acquired by the acquisition board 2;
the power panel 6 is connected with the switching control panel 4 and the main control panel 5, and is used for providing power for the main control panel 5 and supplying power for the equalization module 3.
The connecting wire 1 enables two groups of storage battery packs connected in series to realize the parallel connection of storage battery cells with corresponding serial numbers. The acquisition board 2 acquires information such as the voltage of the storage battery monomer, and the equalization module 3 charges the storage battery monomer in an equalization way under the combined action of the switching control board 4, the main control board 5 and the power board 6.
According to the emergency guarantee system for the communication storage battery for the electric power, a bridging channel between two groups of storage battery packs is established through the connecting wire, and when a certain storage battery pack has a circuit break or has larger internal resistance, electric energy charged and discharged by the storage battery packs can be transmitted in a roundabout way from the bridging channel. This approach allows for a battery pack that has failed because of the backup detour path that is available for power supply.
According to the emergency guarantee system for the communication storage battery for the electric power, after the two storage battery monomers are bridged by the connecting wire 1, the circulation phenomenon between the storage battery monomers is restrained by the storage battery balancing module 3. The phenomenon of battery circulation is intolerable, because the batteries have small internal resistance, the batteries are connected in parallel to generate the energy of the batteries, and the energy of the batteries can flow in the batteries in an unimpeded way with large current, so that the performance of the batteries can be damaged. And the equalization module 3 is adopted to supplement the electric power loss caused by the circulation of the storage battery.
The utility model relates to an emergency guarantee system for a communication storage battery for electric power, which is characterized in that an equalization module 3 is provided with a special equalization circuit and an operation mode for equalizing each battery at the same time, and also provided with an operation mode for equalizing the battery of a battery pack by polling the battery pack one by the equalization module 3.
In the present utility model, the power configuration of the power panel 6 is related to the operation mode of the equalization module 3. The power configuration of the power panel 6 is related to the operation mode of the balancing module 3, wherein the balancing module 3 has a special balancing circuit, and the operation mode of balancing each battery needs to be configured with larger power, and the balancing module 3 polls the battery of the battery pack one by one and the balanced operation mode needs to be configured with smaller power.
The utility model can be used as a fixed device and also can be used as an emergency movable device. Since it is naturally not expected that only this device can solve all problems caused by battery failure as a means of ensuring an emergency of a communication battery, the present utility model can be removed after a new battery is purchased for replacement, and used as a mobile emergency device in other scenes.
Description of the utility model
In a certain high-rise communication station, the communication power supply system totally uses 6 rectifier modules with maximum output current of 50A and alternating current of 220V for supplying power, and the load current is 60A, so long as 3 modules can be normally used in practice, and the other three modules are damaged and have no output, and the communication power supply system is pulled out to stop working; the configured storage battery sets are two sets of 2V/300AH storage battery sets, and each set comprises 24 blocks; part of single body tympanites exist in both groups of storage battery packs, and the maximum tympanites reach 5mm.
Testing the endurance of the two groups of storage battery packs
Step 1: pulling out fuses from the storage battery A to the bus, and returning the fuses;
step 2: setting the rectifier output voltage to 46V;
step 3: since the rectifier output voltage is lower than the battery pack end voltage, no output is generated, only the battery pack 2 supplies power to the load at the moment, and after 20 minutes, the battery pack 2 end voltage drops to be lower than 46V, and the rectifier supplies power to the load.
Step 4: and obtaining the duration of the battery pack B to be 20 minutes. The power consumption of the direct current system is 3KW, and the storage battery pack 2 stores about 1KWh of power and about 1 degree of power;
according to the steps, the endurance time of the storage battery A is tested, the endurance time of the storage battery A reaches 40 minutes, and the storage battery A stores about 2KWh of electricity at 2 degrees;
and restoring the voltage setting of the rectifier, restoring the state of the communication station, and restoring the charging of the storage battery.
When the battery pack has completed charging and enters a floating state, we develop the following work.
By adopting the utility model, the storage battery pack is connected:
the first step: and the corresponding monomers of the two groups of storage battery packs are connected in parallel by adopting a 35 square connecting wire.
And a second step of: setting the output voltage of the rectifier to 46V;
and a third step of: and observing the overall endurance time of the storage battery pack after the storage battery packs are connected in parallel to be 120 minutes, wherein the terminal voltage of the 2 storage battery packs is lower than 46V, and then the rectifier enters a power supply state for the load.
Conclusions are drawn: after the single-body parallel transformation is carried out on the storage battery pack, the cruising ability of 6KWh for storing electric power and about 6 DEG electric power is obtained.
By adopting the utility model, the superposition of the output power of the storage battery pack can be realized.
After the verification, other functional modules, storage battery equalization and acquisition modules and the like of the utility model can be continuously installed, and the utility model is started after the installation is finished and continuously works for 24 hours. Again setting the rectifier output voltage to 46V; the endurance time of the 2 storage battery packs tested at this time reaches 180 minutes, and the utility model enables the storage battery packs to realize 3 hours of endurance power output of about 9 degrees.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.