CN110021987A - A kind of backup power system and a kind of backup power system method for stabilizing voltage - Google Patents
A kind of backup power system and a kind of backup power system method for stabilizing voltage Download PDFInfo
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- CN110021987A CN110021987A CN201910188488.8A CN201910188488A CN110021987A CN 110021987 A CN110021987 A CN 110021987A CN 201910188488 A CN201910188488 A CN 201910188488A CN 110021987 A CN110021987 A CN 110021987A
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- battery
- power system
- backup power
- charging
- interface
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 12
- 238000007600 charging Methods 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 42
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 238000010277 constant-current charging Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 5
- 230000035772 mutation Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- 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
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- H02J2007/10—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of backup power system and method for stabilizing voltage.The backup power system includes: input interface, AC-DC module, control unit, battery charging and discharging administrative unit, battery interface and output interface；Input interface connects output interface and battery charging and discharging administrative unit through AC-DC module, and battery charging and discharging administrative unit connects battery interface, and control unit is connect with AC-DC module and battery charging and discharging administrative unit；Input interface is for receiving alternating current；Control unit is used to be arranged the running parameter of AC-DC module；AC-DC module is used to according to running parameter alternating current is converted to direct current, for the electricity supply and use equipment power supply for being connected to output interface, to charge the battery by battery charging and discharging administrative unit and battery interface；Control unit is also used to control battery charging and discharging administrative unit, makes battery charging and discharging administrative unit through battery interface battery constant voltage constant current charging, improves system voltage stability and reliability.
Description
Technical field
The present invention relates to backup power supply technical field, in particular to a kind of backup power system and a kind of backup power system
Method for stabilizing voltage.
Background technique
With the extensive use of the industries such as mobile communications network, Integrated access network, high-speed rail, petroleum, fallen in electric power facility
The peak period of remote districts or shortage of electric power afterwards, voltage fluctuation leads to electrical equipment operation irregularity, especially in the presence of rear
There is the unusual condition that can not work normally in the electrical equipment of stand-by power source system.
Due to traditional DC back-up power supply system using AC-DC (exchange turns direct current) module conversion alternating current at direct current,
Increase battery in DC output end, as spare supplement power supply；But the charging current of battery is unable to control, and is led
It causes to have AC-DC module and impact, and then cause line loss in the mains-supplied network short time larger, occur in alternating current unstable
In the case of fixed or flash, lead to system cisco unity malfunction, reduce the reliability of backup power system, improves operation dimension
Cost is protected, or even electrical equipment is caused abnormal conditions occur.
Summary of the invention
There is a problem of that city's surge, reliability are low, O&M cost is high in view of the traditional back power-supply system of the prior art,
A kind of backup power system and a kind of backup power system method for stabilizing voltage of the invention are proposed, to overcome the above problem.
To achieve the goals above, present invention employs following technical solutions:
According to one aspect of the present invention, a kind of backup power system is provided, which includes: that input connects
Mouthful, AC-DC module, control unit, battery charging and discharging administrative unit, battery interface and output interface；
The input interface connects output interface and battery charging and discharging administrative unit, the battery through the AC-DC module
Management of charging and discharging unit connects the battery interface, described control unit and the AC-DC module and the battery charging and discharging pipe
Manage unit connection；
The input interface is for receiving alternating current；
Described control unit, for the running parameter of the AC-DC module to be arranged；
The AC-DC module, for alternating current to be converted to direct current according to the running parameter, to be connected to output interface
Electricity supply and use equipment power supply, to charge the battery by battery charging and discharging administrative unit and battery interface；
Described control unit is also used to control the battery charging and discharging administrative unit, passes through battery charging and discharging administrative unit
Battery interface is battery constant voltage constant current charging.
Optionally, the battery charging and discharging administrative unit is managed including a n-mos, described in the grid connection of the n-mos pipe
Control unit, source electrode connect the battery interface, and drain electrode is connected to the output interface；Described control unit, by controlling institute
The turn-on time in the switching frequency and signal period of n-mos pipe is stated, makes the battery charging and discharging administrative unit through battery interface
For battery constant voltage constant current charging.
Optionally, described control unit includes single-chip microcontroller, an output pin and the n-mos pipe of the single-chip microcontroller
Grid connection, by output pwm signal to the grid of the n-mos pipe, the switching frequency for controlling the n-mos pipe and individually week
Turn-on time in phase.
Optionally, described control unit is communicated with the AC-DC module by RS485 bus, RS485 communication used
Chip is MAX3485ESA.
Optionally, which further includes display unit；The display unit is connect with described control unit, is used
In the work state information for showing the backup power system.
Optionally, the work state information that the display unit is shown includes following one or more: the AC-DC mould
Block output voltage and current, the electrical equipment obtain voltage and current, the battery obtain voltage and current with
And the electricity and charging and discharging state of the battery.
According to another aspect of the invention, a kind of backup power system method for stabilizing voltage, the backup power system are provided
Method for stabilizing voltage include: the direct current being converted into using alternating current be power supply for electrical equipment and to charge the battery when, pass through control
The charging voltage and charging current of battery, make battery charge in a manner of constant pressure and flow, so that the charge power of battery
Mutation is not generated.
In conclusion the beneficial effects of the present invention are:
By alternating current be converted into direct current be power supply for electrical equipment and to charge the battery when, it is electric to pass through control unit control
Pond management of charging and discharging unit makes battery charging and discharging administrative unit through battery interface battery constant voltage constant current charging, to solve
The impact of battery charging current influences, and solves the power demand contradiction of peak of power consumption period electrical equipment and battery,
The operating voltage provided to electrical equipment is provided.This programme is applied in base station equipment, can effectively be solved because of voltage fluctuation
Influence to base station equipment, and alleviate the backup power system encountered in current power utilization network construction and maintenance to a certain extent
The problem of input voltage shakiness reduces operation maintenance cost.
Detailed description of the invention
Fig. 1 is a kind of backup power system schematic diagram provided by one embodiment of the present invention；
Fig. 2 is the battery charging and discharging administrative unit signal in a kind of backup power system provided by one embodiment of the present invention
Figure；
Fig. 3 is the RS485 communicating circuit schematic diagram in a kind of backup power system provided by one embodiment of the present invention；
Fig. 4 is the control unit schematic diagram in a kind of backup power system provided by one embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for describe the application and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in application.
Technical concept of the invention is: being power supply for electrical equipment and to charge the battery alternating current is converted into direct current
When, battery charging and discharging administrative unit is controlled by control unit, makes battery charging and discharging administrative unit through battery interface battery
Constant voltage constant current charging, thus solve battery charging current impact influence, solve peak of power consumption period electrical equipment with
The power demand contradiction of battery, this programme are applied in base station equipment, can effectively be solved because voltage fluctuation is to base station equipment
Influence, and alleviate the backup power system input voltage encountered in the construction of current power utilization network and maintenance to a certain extent not
Steady problem reduces operation maintenance cost.
Fig. 1 to Fig. 4 shows one embodiment of disclosure backup power system, wherein Fig. 1 is that backup power system is real
The system framework schematic diagram of example is applied, as shown in Figure 1, the backup power system includes: input interface 110, AC-DC module 120, control
Unit 140, battery charging and discharging administrative unit 150, battery interface 160 and output interface 130 processed.Input interface 110 is through AC-DC mould
Block 120 connects output interface 130 and battery charging and discharging administrative unit 150, and battery charging and discharging administrative unit 150 connects battery interface
160, control unit 140 is connect with AC-DC module 120 and battery charging and discharging administrative unit 150.
Input interface 110, for receiving alternating current.
Control unit 140, for the running parameter of AC-DC module 120, such as output electric current and output voltage etc. to be arranged,
AC-DC module is set to work according to preset running parameter.
AC-DC module 120, for electric main to be converted to direct current according to running parameter, using the direct current, for even
It is connected to the electricity supply and use equipment power supply of output interface 130, meanwhile, it is to be connected to battery also by battery charging and discharging administrative unit 150
The battery of interface 160 charges.Battery, can be when utility power failure leads to electricity shortage, to defeated as redundant electrical power
Outgoing interface 130 exports electric current, is worked normally and is used with electricity supply and use equipment.
Control unit 140 is also used to control battery charging and discharging administrative unit 150, passes through battery charging and discharging administrative unit 150
Battery interface 160 is battery constant voltage constant current charging.
It is battery constant pressure and constant since control unit 140 has control battery charging and discharging administrative unit 150 in the present embodiment
The function of current charge, therefore, the charge power of battery are limited, so that high current will not be generated during the charging process,
The workload of AC-DC module would not be increased suddenly, so that rush of current will not be generated to system, would not also drag down AC-
The output voltage of DC module not will lead to power supply for electrical equipment deficiency and be abnormal situation to play the effect of pressure stabilizing, solution
Electrical equipment of having determined and battery power demand contradiction.Moreover, because battery will not generate excessive charging current suddenly,
It avoids line loss in the mains-supplied network short time to increase, alleviates current power utilization network construction and dimension to a certain extent
The problem of the backup power system input voltage shakiness encountered in shield, reduces operation maintenance cost.
In embodiment, battery charging and discharging administrative unit 150 is managed including a n-mos, as shown in Fig. 2, the grid of the n-mos pipe
Pole G connection control unit 140, source S connect battery interface 160, and drain D is connected to output interface 130；Control unit 140 is led to
The turn-on time in the switching frequency and signal period of control n-mos pipe is crossed, connects battery charging and discharging administrative unit 150 through battery
Mouth 160 is battery constant voltage constant current charging.
As shown in figure 4, control unit 140 includes single-chip microcontroller U3, an output pin of single-chip microcontroller U3 in the present embodiment
PA3 is connect with the grid G of n-mos pipe, and by output PWM (Pulse WidthModulation, pulse width modulation), signal is extremely
The grid G of n-mos pipe, the turn-on time in switching frequency and signal period to control n-mos pipe.
Q1 is connected when the grid G of n-mos pipe is high level, and Q1 is turned off when being low level.So in the height electricity of pwm signal
Flat stage, Q1 realize conducting, may be implemented to charge to battery during conducting, and in the high level stage of pwm signal, Q1 shutdown is closed
Stop charging to battery during disconnected.The frequency and duty ratio that single-chip microcontroller U3 passes through control pwm signal, so that it may control n-mos
Turn-on time in the switching frequency and signal period of pipe, to control effective charging current of battery as constant current, to avoid
Battery charging current is excessive to cause electrical equipment abnormal or power supply line's abnormal electrical power supply, uses the backup power supply to improve
The job stability of the entire base station of system.
Certainly, understandably, control unit 140 further includes resistance capacitance matched with single-chip microcontroller U3 to those skilled in the art
Deng for known to those skilled in the art, details are not described herein.
In the present embodiment, control unit 140 is communicated with AC-DC module 120 by RS485 bus, RS485 used
Communication chip U7 is MAX3485ESA.RS485 communicating circuit is as shown in figure 3, believe the RS485 communication chip of semiconductor using beauty
MAX3485ESA and matched resistance and capacitor are constituted, and with reference to Fig. 4, the single-chip microcontroller U3 of control unit 140 passes through serial ports PA11
RS485 bus communication is realized with PA12 and AC-CD module 120, the running parameter of AC-DC module 120 is arranged.
In the present embodiment, as shown in Figure 1, the backup power system further includes display unit 170；Display unit 170 with
Control unit 140 connects, for showing the work state information of backup power system.For example, the work that display unit 170 is shown
Status information includes following one or more: the voltage that voltage and current that AC-DC module 120 exports, electrical equipment obtain
With the electricity and charging and discharging state of electric current, the voltage and current that battery obtains and battery.
Disclosed herein as well is a kind of backup power system method for stabilizing voltage, the backup power system method for stabilizing voltage include:
When using the direct current that alternating current is converted into for power supply for electrical equipment and to charge the battery, pass through the charging voltage for controlling battery
And charging current, so that battery is charged in a manner of constant pressure and flow, so that the charge power of battery does not generate mutation.This method
Implementation, can be with reference to backup power system described in the above embodiments of the present application.
The above description is merely a specific embodiment, under above-mentioned introduction of the invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of the above embodiments.It will be understood by those skilled in the art that above-mentioned tool
Body description only preferably explains that the purpose of the present invention, protection scope of the present invention should be subject to the protection scope in claims.
Claims (7)
1. a kind of backup power system, which is characterized in that the backup power system includes: input interface, AC-DC module, control
Unit, battery charging and discharging administrative unit, battery interface and output interface；
The input interface connects output interface and battery charging and discharging administrative unit, the battery charge and discharge through the AC-DC module
Electric administrative unit connects the battery interface, described control unit and the AC-DC module and battery charging and discharging management is single
Member connection；
The input interface is for receiving alternating current；
Described control unit, for the running parameter of the AC-DC module to be arranged；
The AC-DC module, for alternating current to be converted to direct current according to the running parameter, for the confession for being connected to output interface
Power supply for electrical equipment, to charge the battery by battery charging and discharging administrative unit and battery interface；
Described control unit is also used to control the battery charging and discharging administrative unit, makes battery charging and discharging administrative unit through battery
Interface is battery constant voltage constant current charging.
2. backup power system according to claim 1, which is characterized in that the battery charging and discharging administrative unit includes one
N-mos pipe, the grid of the n-mos pipe connect described control unit, and source electrode connects the battery interface, and drain electrode is connected to described
Output interface；Described control unit, the turn-on time in switching frequency and signal period by controlling the n-mos pipe, makes
The battery charging and discharging administrative unit is battery constant voltage constant current charging through battery interface.
3. backup power system according to claim 2, which is characterized in that described control unit includes single-chip microcontroller, described
One output pin of single-chip microcontroller is connect with the grid of the n-mos pipe, passes through output pwm signal to the grid of the n-mos pipe
Pole controls the turn-on time in the switching frequency and signal period of the n-mos pipe.
4. backup power system according to claim 3, which is characterized in that described control unit and the AC-DC module
It is communicated by RS485 bus, RS485 communication chip used is MAX3485ESA.
5. backup power system according to claim 1, which is characterized in that the backup power system further includes that display is single
Member；The display unit is connect with described control unit, for showing the work state information of the backup power system.
6. backup power system according to claim 5, which is characterized in that the working condition letter that the display unit is shown
Breath includes following one or more: voltage that the voltage and current of the AC-DC module output, the electrical equipment obtain and
The electricity and charging and discharging state of electric current, the voltage and current that the battery obtains and the battery.
7. a kind of backup power system method for stabilizing voltage, which is characterized in that the backup power system method for stabilizing voltage includes: to use city
When the direct current that electricity is converted into is for power supply for electrical equipment and to charge the battery, pass through the charging voltage and charging for controlling battery
Electric current makes battery charge in a manner of constant pressure and flow, so that the charge power of battery does not generate mutation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188488.8A CN110021987A (en) | 2019-03-13 | 2019-03-13 | A kind of backup power system and a kind of backup power system method for stabilizing voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188488.8A CN110021987A (en) | 2019-03-13 | 2019-03-13 | A kind of backup power system and a kind of backup power system method for stabilizing voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110021987A true CN110021987A (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910188488.8A Pending CN110021987A (en) | 2019-03-13 | 2019-03-13 | A kind of backup power system and a kind of backup power system method for stabilizing voltage |
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Citations (6)
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| CN203205971U (en) * | 2013-01-04 | 2013-09-18 | 京信通信系统（中国）有限公司 | Direct-current type backup power supply and outdoor direct-current type backup power supply using the same |
| CN106655813A (en) * | 2016-12-24 | 2017-05-10 | 天津斌德鑫力电子科技有限公司 | Boost regulator |
| CN206412833U (en) * | 2017-01-12 | 2017-08-15 | 广州泓淮能源科技有限公司 | A kind of device for improving transformer station direct current system reliability |
| CN207234517U (en) * | 2017-09-04 | 2018-04-13 | 广州泓淮能源科技有限公司 | A kind of storage battery parallel power supply system based on straight-flow system |
| CN109167430A (en) * | 2018-09-18 | 2019-01-08 | 深圳市润海通科技有限公司 | A kind of distributed DC power |
| CN211018370U (en) * | 2019-03-13 | 2020-07-14 | 北京优尔良科技发展有限公司 | Back-up power supply system |
-
2019
- 2019-03-13 CN CN201910188488.8A patent/CN110021987A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203205971U (en) * | 2013-01-04 | 2013-09-18 | 京信通信系统（中国）有限公司 | Direct-current type backup power supply and outdoor direct-current type backup power supply using the same |
| CN106655813A (en) * | 2016-12-24 | 2017-05-10 | 天津斌德鑫力电子科技有限公司 | Boost regulator |
| CN206412833U (en) * | 2017-01-12 | 2017-08-15 | 广州泓淮能源科技有限公司 | A kind of device for improving transformer station direct current system reliability |
| CN207234517U (en) * | 2017-09-04 | 2018-04-13 | 广州泓淮能源科技有限公司 | A kind of storage battery parallel power supply system based on straight-flow system |
| CN109167430A (en) * | 2018-09-18 | 2019-01-08 | 深圳市润海通科技有限公司 | A kind of distributed DC power |
| CN211018370U (en) * | 2019-03-13 | 2020-07-14 | 北京优尔良科技发展有限公司 | Back-up power supply system |
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