CN103855768A - Storage battery non-floating-charging hot standby technology - Google Patents
Storage battery non-floating-charging hot standby technology Download PDFInfo
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- CN103855768A CN103855768A CN201410066150.2A CN201410066150A CN103855768A CN 103855768 A CN103855768 A CN 103855768A CN 201410066150 A CN201410066150 A CN 201410066150A CN 103855768 A CN103855768 A CN 103855768A
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Abstract
The invention discloses a storage battery non-floating-charging hot standby technology, belongs to the technical field of electrical engineering and automation, and relates to a storage battery or storage battery pack running mode technology. According to the storage battery non-floating-charging hot standby technology, when a storage battery or a storage battery pack is used as a standby power source to run, the storage battery or the storage battery pack is not in the floating charging state. When a power source breaks down, and the storage battery or the storage battery pack needs to be switched to supply power, the storage battery or the storage battery pack can be immediately put into running, and the rapid seamless switching technology is achieved. Under the condition that the running performance of the storage battery or the storage battery pack is not affected, the running loss of the storage battery can be reduced, the service life of the storage battery is prolonged, and the economic performance of running of the storage battery is improved.
Description
Technical field
The present invention relates to the technology of a kind of storage battery (comprise batteries, be hereinafter called for short storage battery) operational mode.The non-floating charge stand-by heat of storage battery technology is that storage battery is while moving as stand-by power supply, not in floating charge state; In the time that power supply breaks down and need to be switched to by storage battery power supply, can put into operation immediately, realize the technology of seamless switching rapidly; Do not affecting under storage battery runnability condition, can reduce the running wastage of storage battery, improving the economic performance of storage battery operation; The invention belongs to Electrical Engineering and Its Automation technical field.
Background technology
Storage battery is widely used in the industrial circles such as power station, transformer station, operating office as stand-by power supply.In existing DC power system, storage battery has central role as energy storage device, in order to provide Emergency Power for loading after disappearing at main power source, when storage battery is for subsequent use, be optimal situation in being full of electric state.Because storage battery self has internal resistance, storage battery can slowly discharge electric energy by internal resistance, and in order to make storage battery at any time in being full of electric state, current DC power system is all to use the mode of floating charge to solve this problem.Theoretically, if be applied to external voltage on storage battery and be slightly higher than the electromotive force of storage battery, just can on storage battery, produce small electric current, this small electric current just equals the self discharge electric current of storage battery or batteries, thereby the electric charge of storage battery is supplemented, and storage battery keeps fully charged state.In fact, accumulator voltage can change under the impact of internal and external environment, float charge voltage is difficult to follow the tracks of the variation of accumulator voltage, and the internal resistance of storage battery in several milliohms between tens milliohms, this means, float charge voltage than the electromotive force of storage battery high little a bit, just likely on storage battery, cause larger electric current.The storage battery of often seeing generates heat under floating charge state, exactly because the power loss that such electric current produces on storage battery is caused.So, although storage battery has ensured that at floating charge state stand-by power supply has full electric charge at any time, has larger energy loss; Meanwhile, due to storage battery long-term fever under floating charge, can shorten the useful life of storage battery.
On the basis of analyzing in existing storage battery operation characteristic, the present invention proposes the non-floating charge stand-by heat of a kind of storage battery technology, by the one group of adjunct circuit of connecting between storage battery and DC bus, by adjunct circuit is controlled, can realize DC power supply to charge in batteries, after charging, make the hot stand-by duty of storage battery in non-floating charge; In the time that needs storage battery provides electric energy, provide immediately electric energy by adjunct circuit to load, and without extra operation conversion.The present invention can be under the prerequisite of reliability that does not reduce whole system, and the energy loss of self while significantly reducing storage battery operation, in the useful life of prolongation storage battery, has significant economic benefit.
Summary of the invention
The adjunct circuit of connecting between storage battery and DC bus, in the time that storage battery moves as stand-by power supply, supplements electric charge to storage battery spasmodically by adjunct circuit, but not in floating charge state, makes storage battery at the stand-by state low-power consumption that declines; In the time that external loading needs storage battery power supply, provide electric energy to load immediately by adjunct circuit.The method is not affecting under the performance prerequisite of storage battery as stand-by power supply, can reduce the running wastage of storage battery, improves the economic performance of storage battery operation.
To achieve these goals, technical solution of the present invention is:
As shown in Figure 1, between storage battery and DC bus, increase adjunct circuit, adjunct circuit is formed in parallel by K switch and diode D.K switch can be mechanical switch, can be also that conducting direction is the electronic power switch to storage battery by DC bus, and K switch is controlled its turn-on and turn-off by controller C.The conducting direction of diode D is to DC bus by storage battery.Storage battery can be cell batteries, can be also the batteries being in series by cell batteries, and DC bus can be the partition line that converges of multiple direct currents, can be also the tie point of a direct current input and a direct current output.
In the time that storage battery need to charge, controller C sends control signal, makes K switch conducting, DC power supply S by K switch to storage battery B
1-B
n
Charging, if it is complete to charge, sends control signal by controller C K switch is turn-offed.Under normal circumstances, when storage battery is full of electricity, K switch is closed and is had no progeny, and the voltage of DC bus is slightly higher than the terminal voltage of storage battery, and diode D is in reverse blocking state.If close and have no progeny when K switch, the voltage of DC bus is lower than accumulator voltage, and storage battery discharges by diode D, illustrates that now DC bus-bar voltage arranges on the low side, need to adjust the Voltage-output of DC power supply.
Due to the variation of load, the reason such as output deficiency, D. C. power source breakdown of DC power supply, can cause the voltage drop of DC bus, when the voltage of DC bus is during lower than accumulator voltage, diode D bears forward voltage and conducting, and storage battery provides electric energy to load.Transferred to by stand-by state in the process of power supply state at storage battery, do not need extra control, when this conversion is needed, compole is short, can meet the needs that stand-by power supply drops into fast.
When storage battery is under stand-by state, because K switch is turn-offed, the stand-by state of storage battery in non-floating charge, under this state, the power consumption of storage battery is minimum.Storage battery, under non-floating charged state, is understood constantly self discharge, this self discharge meeting electric energy that constantly battery consumption is stored, so, every regular hour excessively, need to be to storage battery electric energy supplement.When needs are during to storage battery electric energy supplement, controller is given an order, and makes K switch conducting, DC power supply again by K switch to storage battery electric energy supplement.After supplementing, K switch is turn-offed, storage battery reenters the stand-by state of non-floating charge.Like this, supplementing of storage battery self discharge energy is not to complete by the mode of floating charge, but completes by the charging modes of discontinuity, reduced DC power supply voltage and has been applied to the time on storage battery; Do not need constantly to regulate the output voltage of DC power supply to adapt to the variation of accumulator voltage, reduce to greatest extent floating current yet.
Tool of the present invention has the following advantages:
1, the electric energy loss can reduce storage battery operation time;
2, can reduce the heating of storage battery, extend the useful life of storage battery;
3, can the variation of DC power output voltage be dropped to minimum on the electric energy loss impact of storage battery.
Brief description of the drawings
Fig. 1 is the non-floating charge stand-by heat of storage battery technical schematic diagram, in Fig. 1:
S-DC power supply;
C-controller;
K-switch;
D-diode;
B-storage battery, subscript 1, n are storage battery numbering;
Z-load.
Embodiment
Between storage battery and DC bus, access adjunct circuit, adjunct circuit is switch and diodes in parallel composition, and the break-make of switch is controlled by controller.It is charge in batteries that switch conduction makes DC power supply, and switch turn-offs and makes storage battery in non-floating charged state.Storage battery is diode reverse cut-off under stand-by state, diode current flow when storage battery powers to the load.
Claims (3)
1. the non-floating charge stand-by heat of storage battery technology, is characterized in that: between storage battery (or batteries) and DC bus, access adjunct circuit, additional electrical routing switch and diodes in parallel form; Switch can be the mechanical switch of two-way admittance, can be also the conducting direction of one-way conduction by DC bus the electronic power switch to storage battery, diode conduction direction by storage battery to DC bus.
2. according to the non-floating charge stand-by heat of storage battery described in claim 1 technology, it is characterized in that: by the break-make of controller control switch, control by the break-make of switch opportunity and the time that DC power supply charges a battery.
3. according to the non-floating charge stand-by heat of storage battery technology described in claim 1,2, it is characterized in that: storage battery can be cell batteries, also can be the batteries being in series by cell batteries, DC bus can be the partition line that converges of multiple direct currents, can be also the tie point of a direct current input and a direct current output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410066150.2A CN103855768A (en) | 2014-02-26 | 2014-02-26 | Storage battery non-floating-charging hot standby technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410066150.2A CN103855768A (en) | 2014-02-26 | 2014-02-26 | Storage battery non-floating-charging hot standby technology |
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| Publication Number | Publication Date |
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| CN103855768A true CN103855768A (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410066150.2A Pending CN103855768A (en) | 2014-02-26 | 2014-02-26 | Storage battery non-floating-charging hot standby technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161779A (en) * | 2015-08-31 | 2015-12-16 | 中国铁塔股份有限公司山西省分公司 | Intermittent using method of valve-regulated sealed lead-acid storage battery as reserve power supply |
| CN106787045A (en) * | 2016-12-30 | 2017-05-31 | 中达电通股份有限公司 | DC power system and its control method |
| WO2017118433A1 (en) * | 2016-01-08 | 2017-07-13 | 中兴通讯股份有限公司 | Battery charging/discharging method and circuit |
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| CN201639353U (en) * | 2010-02-05 | 2010-11-17 | 四川电力试验研究院 | Safety device for testing discharge capacity of accumulator battery without off line |
| CN102664454A (en) * | 2012-05-10 | 2012-09-12 | 四川电力科学研究院 | Non-floating charging type substation direct current power supply system based on iron lithium battery |
| CN203326621U (en) * | 2013-04-08 | 2013-12-04 | 国家电网公司 | Non floating charge lithium battery type DC (direct current) power system used for station |
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2014
- 2014-02-26 CN CN201410066150.2A patent/CN103855768A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201639353U (en) * | 2010-02-05 | 2010-11-17 | 四川电力试验研究院 | Safety device for testing discharge capacity of accumulator battery without off line |
| CN102664454A (en) * | 2012-05-10 | 2012-09-12 | 四川电力科学研究院 | Non-floating charging type substation direct current power supply system based on iron lithium battery |
| CN202550664U (en) * | 2012-05-10 | 2012-11-21 | 四川电力科学研究院 | Direct current power supply system of non-floating charge type transformer substation based on lithium iron battery |
| CN203326621U (en) * | 2013-04-08 | 2013-12-04 | 国家电网公司 | Non floating charge lithium battery type DC (direct current) power system used for station |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161779A (en) * | 2015-08-31 | 2015-12-16 | 中国铁塔股份有限公司山西省分公司 | Intermittent using method of valve-regulated sealed lead-acid storage battery as reserve power supply |
| WO2017118433A1 (en) * | 2016-01-08 | 2017-07-13 | 中兴通讯股份有限公司 | Battery charging/discharging method and circuit |
| CN106787045A (en) * | 2016-12-30 | 2017-05-31 | 中达电通股份有限公司 | DC power system and its control method |
| CN106787045B (en) * | 2016-12-30 | 2020-05-01 | 中达电通股份有限公司 | Direct current power supply system and control method thereof |
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Address after: 610225 Chengdu Province, southwest of Sichuan Economic Development Zone, Beijing University Road, a section of No. 1, No. 24 Applicant after: Chengdu information engineering university Address before: Chengdu City, Sichuan province 610225 universities of Southwest Shuangliu County Airport Economic Development Zone Road No. 24 Chengdu University of Information Technology Applicant before: Chengdu University of Information Technology |
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Application publication date: 20140611 |
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| RJ01 | Rejection of invention patent application after publication |