CN107404149A - A kind of storage battery parallel power supply system based on straight-flow system - Google Patents
A kind of storage battery parallel power supply system based on straight-flow system Download PDFInfo
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- CN107404149A CN107404149A CN201710785537.7A CN201710785537A CN107404149A CN 107404149 A CN107404149 A CN 107404149A CN 201710785537 A CN201710785537 A CN 201710785537A CN 107404149 A CN107404149 A CN 107404149A
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- charging
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- 238000004891 communication Methods 0.000 claims description 14
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- 238000005516 engineering process Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
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Classifications
-
- 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
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H02J7/022—
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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)
Abstract
The present invention relates to a kind of storage battery parallel power supply system based on straight-flow system, including rectifier, load, accumulator cell charging and discharging module；Rectifier is connected by high voltage dc bus and load, and accumulator cell charging and discharging module accesses the high voltage dc bus；Accumulator cell charging and discharging module includes DC/DC converters, multiple cell batteries, multiple monomer management of charging and discharging units, monitoring unit；Multiple monomer management of charging and discharging units are respectively connected between the cell batteries both positive and negative polarity that is matched with it；Low-voltage direct bus is accessed after multiple cell batteries parallel connections；DC/DC converters are connected to high voltage dc bus and between low-voltage direct buses, and it is connected to monitoring unit with multiple monomer management of charging and discharging units by respective COM1.The present invention has the advantages that battery utilization rate is high, power supply reliability is high, the operation maintenance time is short, financial cost is low, battery is applied widely, the estimate accuracy of battery backup endurance is high.
Description
Technical field
The present invention relates to the technical field of accumulator cell charging and discharging, more particularly to a kind of battery based on straight-flow system is simultaneously
Alliance electric system.
Background technology
With developing rapidly for present mobile communication technology, the number of Communication in China base station also climbs an ancient term for silk fabrics, communication base station therewith
Possess battery absolute dependence in power supply process.It is different from the common system using battery as dc source, move
Dynamic communication base station requires higher reliability and lower maintenance rate, the communication base station in mountain area is particularly built in, to unattended
Require very high with the intelligent management of battery.
Traditional base station DC power system is together in series by more piece battery form batteries after use, battery
Be used in series higher to battery technology parameter request, the battery such as different brands, different type, different service lives can not
It is used in mixed way.Base station storage batteries use environment is severe (long-term superhigh temperature), indivedual single batteries easily occurs and breaks down, is
Ensure that the performance of battery needs to change whole group batteries, the utilization rate of battery reduces.If simultaneously can not be timely
Change, battery is gone to work braving one's illness, the power supply reliability of base station will be had a strong impact on.Traditional serial connection technology can not realize battery
Online full capacity core hold, can not accurately estimate the standby endurance of battery.
The problem of existing is used in series for battery, is generally solved the above problems using batteries in parallel connection module.Electricity in parallel
Pond component is typically to be made up of parts such as AC/DC charging currents, DC/DC booster circuits, meets reality by covering modules in parallel more
The DC power system needed, substitute " charger+batteries+accumulator checking " device combination in traditional design, to existing
Improvement cost is too high for some communication base stations.Moreover, existing batteries in parallel connection module is just for single-unit 12V lead-acid accumulators,
Current communication base station battery based on 6V batteries, can not really solve the problems, such as base station straight-flow system with 2V.
How the scope of application of battery can also be expanded while power supply unit cost is reduced, raising battery backup continues
The estimate accuracy of boat ability and single battery capacity real-time core pair and battery entirety discharge energy real-time statistics are realized, into
For communication common carrier urgent problem to be solved.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of battery utilization rate height, power supply reliability
It is high, the operation maintenance time is short, financial cost is low, battery is applied widely, the estimate accuracy of battery backup endurance is high,
The electric power storage based on straight-flow system of single battery capacity real-time core pair and battery entirety discharge energy real-time statistics can be realized
Pond parallel operation system.
To achieve the above object, technical scheme provided by the present invention is：
A kind of storage battery parallel power supply system based on straight-flow system, including rectifier, load, accumulator cell charging and discharging mould
Block；Rectifier is connected by high voltage dc bus and load, and accumulator cell charging and discharging module accesses the high voltage dc bus；Wherein,
The accumulator cell charging and discharging module includes DC/DC converters, multiple cell batteries, multiple and cell batteries and matched one by one
Monomer management of charging and discharging unit and monitoring unit；Multiple monomer management of charging and discharging units are respectively connected to store with the monomer that it is matched
Between battery plus-negative plate, independent management of charging and discharging is carried out to the cell batteries each matched；Multiple cell batteries are in parallel
Low-voltage direct bus is accessed afterwards；DC/DC converters are connected to high voltage dc bus and between low-voltage direct buses, and its with it is more
Individual monomer management of charging and discharging unit is connected to monitoring unit by respective COM1, feeds back respective working condition.
Further, the DC/DC converters include DC/DC reducing transformers and DC/DC boosters；In rectifier normal work
When, the work of DC/DC reducing transformers, it is low-voltage direct busbar charging, now loads and be directly powered by rectifier；It is different in rectifier
Chang Shi, DC/DC booster work, and are load supplying after low-voltage direct bus is boosted.
Further, the monomer management of charging and discharging unit includes charge-discharge control circuit, communication unit, CPU and electricity
Pond monitoring unit；Wherein, battery monitor unit is connected between cell batteries and CPU, the cell batteries number that will be monitored
CPU, which is sent to, according to (voltage, temperature, internal resistance and current information) makees adjustment；Charge-discharge control circuit is connected to low-voltage direct
Between bus and cell batteries, and it is connected with CPU, is controlled by CPU；Communication unit is connected with battery monitor unit, by battery
The data that monitoring unit monitors are sent to monitoring unit, and data supporting is provided for the accurate estimation of integral battery door capacity.
Further, the charge-discharge control circuit includes BUCK reduction voltage circuits and BOOST booster circuits, and the two is in parallel；
Charge control is realized by BUCK reduction voltage circuits, low-voltage direct bus discharge is given by BOOST booster circuits.
Further, between monitoring unit and multiple monomer management of charging and discharging units and DC/DC converters using RS485 or
RS232 interface communicates.
Further, above-mentioned multiple cell batteries can be identical voltage class, brand, the battery of capacity, also may be used
Think and differ voltage class, brand, the battery of capacity；And cell batteries both can be single battery, or
The battery strings of multiple battery series connection.
This programme is not limited to base station use, could be used that in the straight-flow system of other occasions.
Compared with prior art, it is as follows the advantages of this programme：
1. compared with traditional battery series connection application, batteries in parallel connection can newly, used batteries use with, can farthest improve storage
The utilization rate of battery, whole group battery need not be changed during battery exception, reduce time and the financial cost of operation maintenance.
2. can be activated or picked out online when any of which cell exception, it is without whole group battery is exited
System is overhauled, and improves DC system fault respond.
3. compared with existing parallel technology, monomer management of charging and discharging unit carries out single discharge and recharge to cell batteries
Control, it can meet that any brand, the battery cell of free voltage grade are in parallel simultaneously, the scope of application is wider.
It is electric power storage 4. the battery monitor unit of configuration is monitored to parameters such as the temperature of cell batteries, voltage, internal resistances
The management of charging and discharging in pond provides more precise control parameter foundation.
5. the charge and discharge process of each cell batteries is controlled monitoring unit and real-time statistics, support that battery is online
Full capacity core holds, and more accurate data supporting is provided for battery capacity estimation and endurance estimation.
Brief description of the drawings
Fig. 1 is Traditional DC system battery series connection application system block diagram；
Fig. 2 is a kind of system block diagram of the storage battery parallel power supply system based on straight-flow system of the present invention；
Fig. 3 for monomer management of charging and discharging unit in a kind of storage battery parallel power supply system based on straight-flow system of the present invention with
The structured flowchart of cell batteries connection.
Embodiment
With reference to specific embodiment, the invention will be further described：
Referring to shown in accompanying drawing 2 to 3, a kind of storage battery parallel power supply system based on straight-flow system described in the present embodiment,
Including rectifier 1, load 2, accumulator cell charging and discharging module 3；Rectifier 1 is connected by high voltage dc bus with load 2, battery
Charge-discharge modules 3 access the high voltage dc bus.
Wherein, accumulator cell charging and discharging module 3 includes DC/DC converters 4, multiple cell batteries 5, multiple and monomer electric power storage
The monomer management of charging and discharging unit 6 and monitoring unit 7 that pond 5 is matched one by one；Multiple monomer management of charging and discharging units 6 are respectively connected to
Between the both positive and negative polarity of cell batteries 5 matched with it, independent management of charging and discharging is carried out to the cell batteries 5 each matched；
Low-voltage direct bus is accessed after multiple parallel connections of cell batteries 5；DC/DC converters 4 are connected to high voltage dc bus and and low pressure
Between dc bus, and it passes through respective RS485 COM1s and monitoring unit with multiple monomer management of charging and discharging units 6
7 connections.
DC/DC converters 4 include DC/DC reducing transformer 4-1 and DC/DC boosters 4-2.
Monomer management of charging and discharging unit 6 includes charge-discharge control circuit 6-1, communication unit 6-2, CPU6-3 and battery prison
Survey unit 6-4；Battery monitor unit 6-4 is connected between cell batteries 5 and CPU6-3；Charge-discharge control circuit 6-1 connections
It is connected between low-voltage direct bus and cell batteries 5, and with CPU6-3, is controlled by CPU6-3；Communication unit 6-2 and battery
Monitoring unit 6-4 connections.
Charge-discharge control circuit 6-1 includes BUCK reduction voltage circuit 6-1-1 and BOOST booster circuit 6-1-2, and the two is in parallel.
It is 50A, rated voltage 48V, it is desirable to a length of during backup that this electric power system is applied into 2 rated current of load
Exemplified by the base station of 10 hours, its output power is 2400W.
On the matingplan of battery, the voltage class of cell batteries 5 is U, and transformation in planta efficiency is η, each monomer
The discharge current of battery 5 is 0.1C.With 20% or so redundant configuration, the quantity of cell batteries 5 that need to be configured is：Load work(
Rate ÷ (output power * transformation efficiencies) * 1.2 can meet the power demands of load of base station.
Such as 2V500Ah plumbic acids cell batteries 5, transformation efficiency 0.8, then ÷ (the 2* of the amount of monomer of configuration=2400 are needed
50*0.8) * 1.2=36 are only；
Such as 6V300Ah plumbic acids cell batteries 5, transformation efficiency 0.9, then ÷ (the 6* of the amount of monomer of configuration=2400 are needed
30*0.9) * 1.2=18 are only；
Such as 12V300Ah plumbic acids cell batteries 5, transformation efficiency then needs amount of monomer=2400 configured up to more than 0.95
÷ (12*30*0.95) * 1.2=9 are only；
If be used in mixed way using the cell batteries 5 of different voltage class different capabilities, whole group storage battery power supply power
It is the summation of each output power of cell batteries 5.
Operation principle is as follows：
When rectifier 1 powers normal, load 2 is directly powered by rectifier 1, now the DC/DC in DC/DC converters 4
Reducing transformer 4-1 works, and DC/DC boosters 4-2 does not work.Supply voltage on high voltage dc bus drops in DC/DC reducing transformers 4-1
It is depressed into 12V and gives low-voltage direct bussed supply.BUCK reduction voltage circuits 6-1-1 inside monomer management of charging and discharging unit 6 is according to charge and discharge
The setting of electric current parameters, the charging voltage of cell batteries 5 is controlled, now the BOOST inside monomer management of charging and discharging unit 6
Booster circuit 6-1-2 does not work.BUCK reduction voltage circuits 6-1-1 is a kind of closed control circuit, can be automatic according to external parameter
Voltage/current size is adjusted, ensures the charging safety of battery.
When 1 abnormal electrical power supply of rectifier, load 2 is directly powered by each cell batteries 5, now each road monomer charge and discharge fulgurite
Reason unit 6 in BUCK reduction voltage circuits 6-1-1 do not work, BOOST booster circuits 6-1-2 by the boost in voltage of cell batteries 5 extremely
12V, then DC/DC boosters 4-2 works in DC/DC converters 4, and DC/DC reducing transformers 4-1 does not work, by low-voltage direct bus
On supply voltage secondary booster to load 2 needed for voltage class.
In the above-mentioned course of work, the battery detection in accumulator cell charging and discharging module 3 in each monomer management of charging and discharging unit 6
Unit 6-4 monitors the states such as each voltage for matching cell batteries 5, internal resistance, temperature in real time, and each situation is sent into CPU6-
3, provide control parameter foundation for the charge and discharge process of battery；Data are uploaded to by monitoring unit 7 by communication unit 6-2, are
More accurate integral battery door volume calculation provides data supporting.
Examples of implementation described above are only the preferred embodiments of the invention, and the implementation model of the present invention is not limited with this
Enclose, therefore the change that all shape, principles according to the present invention are made, it all should cover within the scope of the present invention.
Claims (8)
1. a kind of storage battery parallel power supply system based on straight-flow system, including rectifier (1), load (2), accumulator cell charging and discharging
Module (3)；Rectifier (1) is connected by high voltage dc bus with load (2), and accumulator cell charging and discharging module (3) accesses the high pressure
Dc bus；It is characterized in that：The accumulator cell charging and discharging module (3) includes DC/DC converters (4), multiple cell batteries
(5), multiple monomer management of charging and discharging units (6) and monitoring unit (7) matched one by one with cell batteries (5)；Wherein, it is more
Individual monomer management of charging and discharging unit (6) is respectively connected between cell batteries (5) both positive and negative polarity for being matched with it, to what is each matched
Cell batteries (5) carry out independent management of charging and discharging；Low-voltage direct bus is accessed after multiple cell batteries (5) are in parallel；DC/
DC converters (4) are connected to high voltage dc bus and between low-voltage direct buses, and itself and multiple monomer management of charging and discharging lists
First (6) are connected to monitoring unit (7) by respective COM1, feed back respective working condition.
A kind of 2. storage battery parallel power supply system based on straight-flow system according to claim 1, it is characterised in that：It is described
DC/DC converters (4) include DC/DC reducing transformers (4-1) and DC/DC boosters (4-2)；In rectifier (1) normal work,
DC/DC reducing transformers (4-1) work, and are low-voltage direct busbar charging, now load (2) and are directly powered by rectifier (1)；
DC/DC boosters (4-2) work, it is load (2) power supply after low-voltage direct bus is boosted when rectifier (1) is abnormal.
A kind of 3. storage battery parallel power supply system based on straight-flow system according to claim 1, it is characterised in that：It is described
Monomer management of charging and discharging unit (6) includes charge-discharge control circuit (6-1), communication unit (6-2), CPU (6-3) and battery prison
Survey unit (6-4)；Wherein, battery monitor unit (6-4) is connected between cell batteries (5) and CPU (6-3), will be monitored
Cell batteries (5) data be sent to CPU (6-3) and make adjustment；Charge-discharge control circuit (6-1) is connected to low-voltage direct
Between bus and cell batteries (5), and it is connected with CPU (6-3), is controlled by CPU (6-3)；Communication unit (6-2) is supervised with battery
Unit (6-4) connection is surveyed, the data that battery monitor unit (6-4) monitors are sent to monitoring unit (7), is held for integral battery door
The accurate estimation of amount provides data supporting.
A kind of 4. storage battery parallel power supply system based on straight-flow system according to claim 3, it is characterised in that：It is described
Charge-discharge control circuit (6-1) includes BUCK reduction voltage circuits (6-1-1) and BOOST booster circuits (6-1-2), and the two is in parallel；By
BUCK reduction voltage circuits (6-1-1) realize charge control, and low-voltage direct bus discharge is given by BOOST booster circuits (6-1-2).
A kind of 5. storage battery parallel power supply system based on straight-flow system according to claim 1, it is characterised in that：It is described
Multiple cell batteries (5) are different voltage class, brand, the battery of capacity.
A kind of 6. storage battery parallel power supply system based on straight-flow system according to claim 5, it is characterised in that：It is described
Cell batteries (5) in multiple cell batteries (5) are single battery.
A kind of 7. storage battery parallel power supply system based on straight-flow system according to claim 5, it is characterised in that：It is described
Cell batteries (5) in multiple cell batteries (5) are the battery strings of multiple batteries series connection.
8. application of the storage battery parallel power supply system in straight-flow system described in claim 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710785537.7A CN107404149A (en) | 2017-09-04 | 2017-09-04 | A kind of storage battery parallel power supply system based on straight-flow system |
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| CN201710785537.7A CN107404149A (en) | 2017-09-04 | 2017-09-04 | A kind of storage battery parallel power supply system based on straight-flow system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011141A (en) * | 2017-12-15 | 2018-05-08 | 四川长虹电源有限责任公司 | Aviation battery system |
| CN109061492A (en) * | 2018-08-02 | 2018-12-21 | 罗添 | A kind of active syndrome accumulator property update the system |
| CN109449944A (en) * | 2018-09-29 | 2019-03-08 | 厦门科华恒盛股份有限公司 | Substation's two-way type DC power control system and method |
| CN109546714A (en) * | 2018-12-29 | 2019-03-29 | 广州泓淮能源科技有限公司 | A kind of open air powered base station accumulator management device and method |
| CN110739741A (en) * | 2019-10-28 | 2020-01-31 | 上海煦达新能源科技有限公司 | Low-voltage direct-current coupling management system of high-voltage power battery in communication base station |
| IT202000025441A1 (en) | 2020-10-28 | 2021-01-28 | Nesyt Spin Off S R L | Intelligent power supply for batteries |
| WO2021253257A1 (en) * | 2020-06-17 | 2021-12-23 | 华为数字能源技术有限公司 | Power energy storage system and energy storage power supply system |
| CN116260208A (en) * | 2022-09-30 | 2023-06-13 | 中兴通讯股份有限公司 | Intelligent battery management system, method, electronic device and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108011141A (en) * | 2017-12-15 | 2018-05-08 | 四川长虹电源有限责任公司 | Aviation battery system |
| CN109061492A (en) * | 2018-08-02 | 2018-12-21 | 罗添 | A kind of active syndrome accumulator property update the system |
| CN109449944B (en) * | 2018-09-29 | 2021-04-27 | 科华恒盛股份有限公司 | Bidirectional direct-current power supply control system and method for transformer substation |
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| IT202000025441A1 (en) | 2020-10-28 | 2021-01-28 | Nesyt Spin Off S R L | Intelligent power supply for batteries |
| CN116260208A (en) * | 2022-09-30 | 2023-06-13 | 中兴通讯股份有限公司 | Intelligent battery management system, method, electronic device and readable storage medium |
| CN116260208B (en) * | 2022-09-30 | 2023-11-10 | 中兴通讯股份有限公司 | Intelligent battery management system, method, electronic device and readable storage medium |
| WO2024066911A1 (en) * | 2022-09-30 | 2024-04-04 | 中兴通讯股份有限公司 | Smart battery management system and method, and electronic device and readable storage medium |
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