CN106911164A - A kind of energy storage for power supply system of anti-battery over-discharge method and application the method - Google Patents
A kind of energy storage for power supply system of anti-battery over-discharge method and application the method Download PDFInfo
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- CN106911164A CN106911164A CN201710286745.2A CN201710286745A CN106911164A CN 106911164 A CN106911164 A CN 106911164A CN 201710286745 A CN201710286745 A CN 201710286745A CN 106911164 A CN106911164 A CN 106911164A
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- modules
- battery
- power supply
- energy storage
- rectification module
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/448—End of discharge regulating measures
-
- 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
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention discloses the energy storage for power supply system of a kind of anti-battery over-discharge method and application the method, and the method accesses a DC/DC modules between battery output and the rectification module output end of energy storage for power supply system, a under-voltage protective module is set in the DC/DC modules.Make the output voltage of rectification module higher than the output voltage of DC/DC modules; direct current is turned 24V modules and is powered by rectification module during normal work; when AC dump or rectification module failure; by DC/DC modules by battery to system power supply; because the under-voltage protective module set in DC/DC modules has under-voltage protection function, therefore when battery discharge is less than certain value, DC/DC modules can be turned off voluntarily; ensure that the energy of battery is not given out light, improve the reliability of energy storage for power supply system.
Description
Technical field
The present invention relates to energy storage for power supply technical field, more particularly to a kind of anti-battery over-discharge method and application the method
Energy storage for power supply system.
Background technology
All the time, the research and development of energy storage technology enjoys the height of the departments such as various countries' energy, traffic, electric power, telecommunication
Concern, is especially significant to development New Energy Industry.By environmental constraints, various countries advocate development new energy energetically one after another,
There is unstability and intermittence yet with generation of electricity by new energy, large-scale development and using imbalance between supply and demand will be made more to protrude,
The whole world abandons wind, abandons optical issue generally existing, seriously constrains the development of new energy.Therefore, energy storage technology breakthrough and innovation just
As the key that can new energy shape up.In a sense, the degree of energy storage technology application will determine new energy
Development level.According to USDOE's whole world energy storage database (DOE Global Energy Storage Database) 2016
August 16 days updates the data display, the energy storage project installation scale 167.24GW of the accumulative operation in the whole world, wherein water-storage
161.23GW, heat accumulation 3.05GW, other mechanical energy storages 1.57GW, electrochemical energy storage 1.38GW, hydrogen storage 0.01GW.From global each storage
From the point of view of energy type of skill market growth degree, the development of water-storage technology is the most ripe, installs largest.Heat-storage technology nearly ten
Year have developed rapidly, and is number two in installation amount.Electrochemical energy storage is then that global evolution is the rapidest, and speedup is most fast.Electrochemistry
Energy-storage system is existed by battery, charge and discharge control module, a few part compositions such as monitoring module and power supply module, the cost of wherein battery
85% is accounted in whole system, how to ensure battery only discharge capacity, extension battery life is the important bar for ensureing cost-recovering
Part.
At present, the development of China's electrochemical energy storage is relatively rapid.The country develops also relative maturity based on lithium battery, and it tires out
Meter operation installation scale accounts for more than 2/3rds of China's electrochemical energy storage market total installed capacity, in frequency modulation assistant service, distribution
Microgrid, family are most fast with the growth rate in energy storage field.Additionally, energy storage has also played good work in terms of electric automobile charging and conversion electric
With, car electricity interconnection (V2G) system is such as set up, light stores up formula electric automobile electric charging station, demand response charging etc..However, lithium battery
Energy storage is general from large-scale promotion because price is high, for being remained in large-scale energy storage in factors such as drawbacks also in the commercialization initial stage
And also a certain distance.Therefore there is also certain weak point in the early stage design of charge-discharge system.
Meanwhile, traditional energy storage for power supply system does not only exist the problem of battery over-discharge, and in electric network power-fail or rectification
During module failure, whole energy storage for power supply system all can power down, the monitoring device of computer room where battery will also be stopped, now store up
The communication of energy electric power system and remote monitoring room is also interrupted, if computer room occurs surprisingly, Control Room will be known nothing.
The content of the invention
It is an object of the invention to the energy storage for power supply system by a kind of anti-battery over-discharge method and application the method, come
Solve the problems, such as that background section above is mentioned.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of anti-battery over-discharge method, it includes：In the battery output and energy storage for power supply system of energy storage for power supply system
Rectification module output end between access a DC/DC modules；One under-voltage protective module is set in the DC/DC modules, it is described to owe
Pressure protection module sets the shutdown voltage of the DC/DC modules；When the voltage of shown battery is less than preset value, the DC/DC
Module is cut off the battery and is powered, and prevents battery over-discharge.
Especially, output voltage of the output voltage of the DC/DC modules less than the rectification module；Supplied in the energy storage
Powered by the rectification module during electric system normal work, when electric network power-fail or the rectification module failure by the DC/DC
Module for power supply.
The invention also discloses a kind of energy storage for power supply system of the above-mentioned anti-battery over-discharge method of application, the system includes：
Battery, charge-discharge system, monitoring system, transformer, rectification module, DC/DC modules, direct current turn 24V modules and center monitoring
Equipment；The COM1 of the battery is connected with monitoring system, and both positive and negative polarity is connected with charge-discharge system, DC/DC modules；It is described to fill
One end of discharge system is connected with transformer, and COM1 is connected with monitoring system；One end of the monitoring system and discharge and recharge
System is connected, and the other end turns 24V modules and is connected with center monitoring equipment, direct current；One end connection power network of the transformer, it is another
End is connected with rectification module；The DC/DC modules are arranged between the battery output and rectification module output end, described
One under-voltage protective module is set in DC/DC modules；The direct current turns the output end of one end connection rectification module of 24V modules, separately
One end connection charge-discharge system, center monitoring equipment.
Especially, output voltage of the output voltage of the DC/DC modules less than the rectification module；Supplied in the energy storage
Powered by the rectification module during electric system normal work, when electric network power-fail or the rectification module failure by the DC/DC
Module for power supply.
Especially, the energy storage for power supply system also includes remote monitoring room；The remote monitoring room and the monitoring system
Connected by internet.
Especially, the battery is connected by RS485 interfaces with monitoring system；The charge-discharge system is connect by RS485
Mouth is connected with monitoring system.
Anti- battery over-discharge method proposed by the present invention and application the method energy storage for power supply system battery output with
A DC/DC modules are accessed between the rectification module output end of energy storage for power supply system, a under-voltage protection is set in the DC/DC modules
Module.Make the output voltage of rectification module higher than the output voltage of DC/DC modules, direct current turns 24V modules and passes through during normal work
Rectification module is powered, when AC dump or rectification module failure, by DC/DC modules by battery to system power supply, by
The under-voltage protective module set in DC/DC modules has under-voltage protection function, therefore when battery discharge is less than certain value, DC/
DC modules can be turned off voluntarily, it is ensured that the energy of battery is not given out light.The present invention can not only be in AC dump or rectification module
Battery over-discharge is prevented in the case of failure, and in electric network power-fail or rectification module failure, can be supplied by DC/DC modules
Electricity, it is ensured that monitoring system normal work, improves the reliability of energy storage for power supply system.
Brief description of the drawings
Fig. 1 is energy storage for power supply system structure diagram provided in an embodiment of the present invention；
Fig. 2 is the electrical block diagram of under-voltage protective module provided in an embodiment of the present invention.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is made to the more thorough of the disclosure understanding
Comprehensively.It should be noted that when an element is considered as " connection " another element, it can be directly to another
Element may be simultaneously present centering elements.Unless otherwise defined, all of technologies and scientific terms used here by the article with
Belong to the implication that those skilled in the art of the invention are generally understood that identical.Made in the description of the invention herein
Term is intended merely to describe the purpose of specific embodiment, it is not intended that in the limitation present invention.Term as used herein
" and/or " include the arbitrary and all of combination of one or more related Listed Items.
Anti- battery over-discharge method is specifically included in the present embodiment：Supplied with energy storage in the battery output of energy storage for power supply system
A DC/DC modules are accessed between the rectification module output end of electric system；A under-voltage protective module is set in the DC/DC modules,
The under-voltage protective module sets the shutdown voltage of the DC/DC modules；It is described when the voltage of shown battery is less than preset value
DC/DC modules are cut off the battery and are powered, and prevent battery over-discharge, it is ensured that the electricity of battery is not vented.
The output of DC/DC modules in the present embodiment and the output of the rectification module are by its internal respective diode
24V module for power supply is turned to the direct current behind top again to the energy storage for power supply system, wherein, the diode pair top refers to DC/DC moulds
Output end inside block and rectification module is connected to a diode, and DC/DC modules are connected with rectification module by the two diodes
Connect, even if so as to ensure the output voltage of the output voltage higher than DC/DC modules of rectification module, electric current also may not flow into DC/DC
Module.Output voltage of the output voltage of the DC/DC modules less than the rectification module；It is normal in the energy storage for power supply system
Powered by the rectification module during work, when electric network power-fail or the rectification module failure by the DC/DC module for power supply, this
Shi Yiran can ensure the monitoring system normal work of the energy storage for power supply system.
As shown in figure 1, Fig. 1 is the structural representation of the energy storage for power supply system using above-mentioned anti-battery over-discharge method, this
Energy storage for power supply system in embodiment using above-mentioned anti-battery over-discharge method is specifically included：Battery 101, charge-discharge system 102,
Monitoring system 103, transformer 104, rectification module 105, DC/DC modules 106, direct current turn 24V modules 107 and center monitoring sets
Standby 108；The COM1 of the battery 101 is connected with monitoring system 103, both positive and negative polarity and charge-discharge system 102, DC/DC modules
106 connections；One end of the charge-discharge system 102 is connected with transformer 104, and COM1 is connected with monitoring system 103；It is described
One end of monitoring system 103 is connected with charge-discharge system 102, and the other end turns 24V modules 107 with center monitoring equipment 108, direct current
Connection；One end connection power network of the transformer 104, the other end is connected with rectification module 105；The DC/DC modules 106 are set
Between the output end of the battery 101 and the output end of rectification module 105, a under-voltage protection mould is set in the DC/DC modules 106
Block, as shown in Fig. 2 the under-voltage protective module include resistance R1-R9, electric capacity C1-C4, voltage-stabiliser tube D1, voltage reference chip U1,
The control pin of triode Q1, the positive pole BATTERY+ of battery 101, the negative pole BATTERY- of battery 101 and driving chip
CONTROL, the voltage reference chip U1 use voltage reference chip TL431；When the voltage of battery 101 is higher than setting value, electricity
Fiducial chip TL431 is in the conduction state for pressure, and now triode Q1 is not turned on that (triode Q1 is connected to DC/DC by pull-up resistor
The control pin CONTROL of driving chip, driving chip normal work during high level in module), when the voltage of battery 101 is less than default
During numerical value, voltage reference chip TL431 cut-offs, now triode Q1 conductings, the control pin of driving chip in DC/DC modules
CONTROL is changed into low level, and now driving chip is stopped, whole DC/DC module from service.The direct current turns 24V moulds
One end of block 107 connects the output end of rectification module 105, other end connection charge-discharge system 102, center monitoring equipment 108.
The output of DC/DC modules 106 in the present embodiment and the output of the rectification module 105 are internal respective by it
Turn 24V modules 107 to again behind diode pair top the direct current of the energy storage for power supply system to power, wherein, the diode pair top is
Refer to that the output end inside DC/DC modules 106 and rectification module 105 is connected to a diode, DC/DC modules 105 and rectification module
106 are connected by the two diodes, even if so as to ensure that the output voltage of rectification module 105 is defeated higher than DC/DC modules 106
Go out voltage, electric current also may not flow into DC/DC modules 106.The output voltage of the DC/DC modules 106 is less than the rectification module
105 output voltage；Powered by the rectification module 105 in the energy storage for power supply system worked well, when electric network power-fail or
Powered by the DC/DC modules 106 during 105 failure of rectification module, now can still ensure the energy storage for power supply system
The normal work of monitoring system 103.
If it is noted that the DC/DC modules 106 can not set shutdown voltage, in AC dump or described whole
In the case of the failure of flow module 105, during overlong time, the energy of battery 101 has the risk being vented, to the aging effects of battery 101
It is very big.Therefore increase under-voltage protective module in DC/DC modules 106 in the present embodiment, the shutdown electricity of DC/DC modules 106 is set
Pressure, in the case of AC dump or the failure of rectification module 105, as long as the voltage of battery 101 is because energy of releasing is less than default
During numerical value, the DC/DC modules 106 cut off the power supply that the battery 101 is whole system, prevent the overdischarge of battery 101, it is ensured that
The electricity of battery 101 is not vented.It should be noted that the shutdown voltage of the DC/DC modules 106 and the voltage of the battery 101
Default value it is identical, the default value can realize that installation warrants are by adjusting the resistance R1 in Fig. 2：It is with lithium battery
Example, the battery 101 of energy-storage system is being composed in series by battery, it is assumed that have N batteries to be composed in series, under normal circumstances, single
The voltage for saving lithium battery is 3.2V, and highest can be charged to 3.6V, and minimum electric discharge can be put to 2.8V, so electric discharge is described default
Numerical value is N*2.8.
The monitoring system 103 includes but is not limited to battery management system (BMS), EMS in the present embodiment
(EMS).The energy storage for power supply system also includes remote monitoring room 109；The remote monitoring room passes through with the monitoring system 103
Internet is connected.The battery 101 is connected by RS485 interfaces with monitoring system 103；The charge-discharge system 102 passes through
RS485 interfaces are connected with monitoring system 103.
Technical scheme can not only prevent battery in the case of AC dump or the failure of rectification module 105
101 overdischarge, and in 105 failure of electric network power-fail or rectification module, can be powered by DC/DC modules 106, it is ensured that monitoring
The normal work of system 103, improves the reliability of energy storage for power supply system.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (6)
1. a kind of anti-battery over-discharge method, it is characterised in that including：Supplied with energy storage in the battery output of energy storage for power supply system
A DC/DC modules are accessed between the rectification module output end of electric system；A under-voltage protective module is set in the DC/DC modules,
The under-voltage protective module sets the shutdown voltage of the DC/DC modules；It is described when the voltage of shown battery is less than preset value
DC/DC modules are cut off the battery and are powered, and prevent battery over-discharge.
2. anti-battery over-discharge method according to claim 1, it is characterised in that the output voltage of the DC/DC modules
Less than the output voltage of the rectification module；Powered by the rectification module in the energy storage for power supply system worked well, when
By DC/DC module for power supply when electric network power-fail or the rectification module failure.
3. the energy storage for power supply system of a kind of anti-battery over-discharge method described in application claim 1, it is characterised in that the system bag
Include：Battery, charge-discharge system, monitoring system, transformer, rectification module, DC/DC modules, direct current turn 24V modules and computer room prison
Control equipment；The COM1 of the battery is connected with monitoring system, and both positive and negative polarity is connected with charge-discharge system, DC/DC modules；It is described
One end of charge-discharge system is connected with transformer, and COM1 is connected with monitoring system；One end of the monitoring system and charge and discharge
Electric system is connected, and the other end turns 24V modules and is connected with center monitoring equipment, direct current；One end connection power network of the transformer, separately
One end is connected with rectification module；The DC/DC modules are arranged between the battery output and rectification module output end, described
One under-voltage protective module is set in DC/DC modules；The direct current turns the output end of one end connection rectification module of 24V modules, separately
One end connection charge-discharge system, center monitoring equipment.
4. energy storage for power supply system according to claim 3, it is characterised in that the output voltage of the DC/DC modules is less than
The output voltage of the rectification module；Powered by the rectification module in the energy storage for power supply system worked well, work as power network
By the DC/DC module for power supply when power down or the rectification module failure.
5. energy storage for power supply system according to claim 3, it is characterised in that the energy storage for power supply system also includes long-range prison
Control room；The remote monitoring room is connected with the monitoring system by internet.
6. according to the energy storage for power supply system that one of claim 3 to 5 is described, it is characterised in that the battery passes through RS485 interfaces
It is connected with monitoring system；The charge-discharge system is connected by RS485 interfaces with monitoring system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286745.2A CN106911164A (en) | 2017-04-27 | 2017-04-27 | A kind of energy storage for power supply system of anti-battery over-discharge method and application the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286745.2A CN106911164A (en) | 2017-04-27 | 2017-04-27 | A kind of energy storage for power supply system of anti-battery over-discharge method and application the method |
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| CN106911164A true CN106911164A (en) | 2017-06-30 |
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| CN201710286745.2A Pending CN106911164A (en) | 2017-04-27 | 2017-04-27 | A kind of energy storage for power supply system of anti-battery over-discharge method and application the method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969708A (en) * | 2020-07-20 | 2020-11-20 | 浙江吉智新能源汽车科技有限公司 | Battery replacement station protection system and protection method |
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| CN202206308U (en) * | 2011-08-10 | 2012-04-25 | 安徽省高程电子科技有限公司 | Dc/dc converter |
| JP2014171359A (en) * | 2013-03-05 | 2014-09-18 | Sharp Corp | Power converter |
| CN104065157A (en) * | 2014-06-09 | 2014-09-24 | 深圳微网能源管理系统实验室有限公司 | Uninterruptible power supply with improved power supply reliability |
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