CN102810698B - Storage battery pack, and method and system for storage battery pack charge and discharge management - Google Patents
Storage battery pack, and method and system for storage battery pack charge and discharge management Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007599 discharging Methods 0.000 claims description 25
- 239000002253 acid Substances 0.000 claims description 6
- 210000004027 cell Anatomy 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RSMUVYRMZCOLBH-UHFFFAOYSA-N metsulfuron methyl Chemical compound COC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC1=NC(C)=NC(OC)=N1 RSMUVYRMZCOLBH-UHFFFAOYSA-N 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- NSAODVHAXBZWGW-UHFFFAOYSA-N cadmium silver Chemical compound [Ag].[Cd] NSAODVHAXBZWGW-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
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- 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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Abstract
The invention discloses a storage battery pack containing a plurality of storage battery units. The storage battery pack comprises: a plurality of primary storage battery sub-packs, wherein each primary storage battery sub-pack comprises more than two storage battery units connected in series, when a terminal voltage of each primary storage battery sub-pack is not less than a first threshold voltage, the storage battery pack is in a first work mode and the primary storage battery sub-packs are connected in series to supply power to a load, when a terminal voltage of at least one of the primary storage battery sub-packs is less than the first threshold voltage, the storage battery pack is in a second work mode and the primary storage battery sub-pack with the terminal voltage less than the first threshold voltage is charged to a saturation voltage of the primary storage battery sub-pack. The invention further discloses a method and a system for storage battery pack charge and discharge management.
Description
Technical field
The present invention relates to mobile communication power supply technical field, and in particular to a kind of method of batteries, batteries management of charging and discharging and the system of batteries management of charging and discharging.
Background technology
In military field mobile multifunction electric origin system, in direct current output, there are a series of outputs such as 24V, 12-30V, 36V, 48V.Due in Military Application some power cutoff device power consumption is not larger, thereby generally adopt the pattern of series-connected batteries to avoid too high electric current.Yet in traditional series-connected batteries, there is individual difference in the different batteries unit in batteries, if this individual difference gets the brush-off, will cause batteries service efficiency to reduce, reduce the useful life of storage battery.In view of the specific (special) requirements of the applied environment of military equipment, also do not have in the market a kind ofly can meet the batteries of these demands, the method and system of batteries management of charging and discharging.
Summary of the invention
The object of this invention is to provide a kind of method of batteries, batteries management of charging and discharging and the system of batteries management of charging and discharging, thereby alleviate or solve previously described problem.
According to an aspect of the present invention, a kind of batteries that comprises a plurality of secondary battery units, this batteries can comprise: a plurality of elementary storage battery subgroups, the secondary battery unit that described in each, elementary storage battery subgroup comprises two above series connection, wherein when the terminal voltage of a plurality of elementary storage battery subgroups described in each is not less than first threshold voltage, this batteries is in the first mode of operation, and now described elementary storage battery subgroup is connected in series with to load supplying; And wherein when the terminal voltage of a plurality of elementary storage battery subgroups described at least one is during lower than described first threshold voltage, this batteries is in the second mode of operation, and now terminal voltage charges to the saturation voltage of this elementary storage battery subgroup lower than the elementary storage battery subgroup of first threshold voltage.
Preferably, two the above elementary storage battery subgroups are connected in series and form secondary storage battery subgroup.
Preferably, under described the first mode of operation, according to the voltage of load and/or power demand, by elementary storage battery subgroup or secondary storage battery subgroup to load direct current supply.
Preferably, under described the second mode of operation, after elementary storage battery subgroup charges to the saturation voltage of described elementary storage battery subgroup, secondary storage battery subgroup is charged to the saturation voltage of described secondary storage battery subgroup.
Preferably, described elementary storage battery subgroup is charged by the charge-discharge modules corresponding with its nominal voltage respectively with secondary storage battery subgroup.
Preferably, under described the second mode of operation, terminal voltage can charge to Second Threshold voltage with the first charge rate lower than the elementary storage battery subgroup of first threshold voltage, then can charge to the second charge rate the saturation voltage of this elementary storage battery subgroup.
Preferably, under described the second mode of operation, described the first charge rate can be C/15-C/10, and described the second charge rate can be 2C-10C.
Preferably, described first threshold voltage can be the 60-90% of nominal voltage, and described Second Threshold voltage can be the 85-95% of nominal voltage, and described saturation voltage can be than the high 5-25% of nominal voltage.
Preferably, the number of described secondary battery unit can be 24, and described in each, elementary storage battery subgroup can comprise 2,4,6,8 or 12 secondary battery units.
Preferably, described secondary battery unit can be acid cell, such as lead acid accumulator etc.Alternatively, described secondary battery unit can be alkaline battery, such as iron-nickel storage battery, cadmium-nickel storage cell, nickel-hydrogen accumulator, zinc-silver storage battery, silver cadmium cell, nickel zinc cell etc.
According to a further aspect in the invention, a kind of method to the batteries management of charging and discharging that comprises a plurality of secondary battery units has been proposed, this batteries comprises a plurality of elementary storage battery subgroups, the secondary battery unit that described in each, elementary storage battery subgroup comprises two above series connection, described method can comprise: when the terminal voltage of a plurality of elementary storage battery subgroups described in each is not less than first threshold voltage, make described batteries in the first mode of operation, now described elementary storage battery subgroup is connected in series for to load supplying; And when the terminal voltage of a plurality of elementary storage battery subgroups described at least one is during lower than described first threshold voltage, make described batteries in the second mode of operation, now terminal voltage is charged to the saturation voltage of this elementary storage battery subgroup lower than the elementary storage battery subgroup of first threshold voltage.
According to another aspect of the invention, a kind of system to the batteries management of charging and discharging that comprises a plurality of secondary battery units has been proposed, this batteries comprises a plurality of elementary storage battery subgroups, the secondary battery unit that described in each, elementary storage battery subgroup comprises two above series connection, described system comprises the charging-discharging controller that can operate to carry out following step: when the terminal voltage of a plurality of elementary storage battery subgroups described in each is not less than first threshold voltage, make described batteries in the first mode of operation, now described elementary storage battery subgroup is connected in series for to load supplying, and when the terminal voltage of a plurality of elementary storage battery subgroups described at least one is during lower than described first threshold voltage, make described batteries in the second mode of operation, now terminal voltage is charged to the saturation voltage of this elementary storage battery subgroup lower than the elementary storage battery subgroup of first threshold voltage.
Term as used herein " equalizing charge " refers to as guaranteeing a kind of continuity charging of the complete completely charged of all cell batteries in batteries.
Term as used herein " nominal voltage " refers to for differentiating the suitable voltage approximation of battery types.
Term as used herein " saturation voltage " refers to the ceiling voltage that storage battery allows.
Term as used herein " charge rate " refers to for representing the magnitude numerical value of battery when charging electric current.In this application, to take battery rating (C) be unit to charge rate.For example, the charge rate of 10C represent needs 0.1 hour by charge in batteries to its rated capacity.
Term as used herein " trickle charge " refers to as compensation self discharge, makes storage battery remain on the continuous low current charge of approximate complete charged state.
Term as used herein " boost charge " refers to a kind of part charging with the high charge speed short time.
Accompanying drawing explanation
Hereinafter, with reference to embodiment, by the mode of example, the present invention is carried out to detailed explaining by reference to the accompanying drawings, in the accompanying drawings:
Fig. 1 is the structured flowchart of the batteries management of charging and discharging system of the embodiment of the present invention; And
Fig. 2 is the flow chart of the method for managing charge/discharge of the embodiment of the present invention.
Embodiment
With reference to figure 1, the figure shows the structured flowchart of the batteries charge-discharge circuit system of the embodiment of the present invention.Accumulator charging/discharging circuit system 10 of the present invention comprises power supply 100, charge-discharge modules 200, batteries 300, load 400 and charging-discharging controller 500.Power supply 100 is for charging to batteries 300.
Note, batteries charge-discharge circuit system 10 according to the present invention also can comprise other functional part that those skilled in the art know.For example, alternatively, this batteries charge-discharge circuit system 10 also can comprise current-voltage sampling circuit, and it is for gathering electric current and/or the voltage of batteries and load, and described electric current and/or voltage are offered to charging-discharging controller 500 as control signal.
In addition, alternatively, this batteries charge-discharge circuit system 10 also can comprise temperature sensing circuit, and it is for detection of the temperature of the temperature of secondary battery unit in batteries and the environment of batteries, and detected temperature is offered to charging-discharging controller 500.When detected temperature is too low or when too high, all can not charge to batteries, otherwise will damage storage battery.Suitable charging temperature scope is between 0 ℃～50 ℃, preferably between 2.5 ℃～40 ℃.
For fear of the fuzzy description of this invention unnecessarily, these functional parts are not described in detail herein.
Batteries of the present invention can comprise the secondary battery unit of different numbers.In the exemplary embodiment, batteries 300 can comprise 24 secondary battery units.
Batteries 300 comprises elementary storage battery subgroup 300 (1), 300 (2) ... 300 (n), each elementary storage battery subgroup is used for the direct direct current supply of load 400.Each elementary storage battery subgroup 300 (1), 300 (2) ... 300 (n) can comprise the secondary battery unit of two above series connection.
Each elementary storage battery subgroup can comprise the secondary battery unit of equal number or the secondary battery unit of varying number.For example, each elementary storage battery subgroup can comprise 2,3,4,6,8 or 12 secondary battery units.In the exemplary embodiment, each elementary storage battery subgroup can comprise respectively for example 6 secondary battery units.Therefore, batteries of the present invention is easily carried out scale expansion, is easy to realize modular system integrated.
In the exemplary embodiment, secondary battery unit is that nominal voltage is the lead acid accumulator of 2V.Each elementary storage battery subgroup 300 (1), 300 (2) ... 300 (n) comprise 6 such lead acid accumulators.That is, each elementary storage battery subgroup provides the nominal voltage of 12V.
N is more than or equal to 2 positive integer, and the number of the secondary battery unit that the number of the secondary battery unit that it comprises with batteries and each elementary storage battery subgroup comprise is relevant.The situation that comprises 24 secondary battery units for batteries, when each elementary storage battery subgroup for example comprises 4 secondary battery units, n equals 6.In the exemplary embodiment, when each elementary storage battery subgroup for example comprises respectively 6 secondary battery units, n equals 4, has 4 elementary storage battery subgroups 300 (1), 300 (2), 300 (3) and 300 (4).
In the exemplary embodiment, elementary storage battery subgroup 300 (1), 300 (2) ... between 300 (4), can be connected with secondary equalizer by bidirectional, dc contactor.In addition, described in each, elementary storage battery subgroup can further be connected in series to form secondary storage battery subgroup.
For due in Military Application some power cutoff device power consumption is not larger, the present invention by bidirectional, dc contactor and one/secondary equalizer by secondary battery unit neatly connection in series-parallel connect, thereby realize the High-current output problem of different voltage batteries under different voltage.
Charge-discharge modules 200 is for to elementary storage battery subgroup 300 (1), 300 (2) ... 300 (n) charging, and comprise and discharge and recharge submodule 200 (1), 200 (2) ... 200 (m).Each charging voltage that discharges and recharges submodule is different.When each elementary storage battery subgroup comprises respectively 6 secondary battery units, described elementary storage battery subgroup can provide the nominal voltage of 12V and the nominal voltage that secondary storage battery subgroup can provide 24V, 36V and 48V.Correspondingly, described charge-discharge modules 200 can comprise 12V, 24V, 36V, 48V bi-directional DC-DC rectification charge-discharge modules, that is, 4 (m=4) discharge and recharge submodule, thereby charges for the described primary and secondary storage battery subgroup to corresponding nominal voltage.
In traditional series-connected batteries, there is individual difference in the different batteries unit in batteries, if this individual difference gets the brush-off, will cause batteries service efficiency to reduce, and reduces the useful life of storage battery.Particularly, each secondary battery unit is because the quality of storage battery is not identical, little, the ropy accumulator voltage of capacity there will be the situation that build-up of voltage is more than another storage battery after being filled with same charge, if do not taken measures, their voltage difference will increase, so that one of them storage battery reaches the safe voltage of regulation very soon, charging process also will be forced to stop.Now should stop the storage battery that charging voltage is high, stop equalizing charge.Be conducive to like this recover impaired secondary battery unit in storage battery, charging process can successfully be carried out.According to the method for management of charging and discharging of the present invention, can solve these technical problems.
Below in conjunction with Fig. 2, describe in detail according to the method for management of charging and discharging of the present invention.
In first step, secondary battery unit is connected in series and forms primary/secondary storage battery subgroup.24 secondary battery units are divided into 4 elementary storage battery subgroups, and each elementary storage battery subgroup comprises 6 secondary battery units and therefore the nominal voltage of 12V is provided.In addition, described elementary storage battery subgroup is connected in series, thereby obtains providing respectively the secondary storage battery subgroup of the nominal voltage of 24V, 36V and 48V.
In second step, by current-voltage sampling circuit, carry out detection of primary storage battery subgroup 300 (1), 300 (2) ... the terminal voltage of 300 (n).Whether the terminal voltage detecting, with theoretical value comparison, is judged to the classification of storage battery and connect correct.Then detect the terminal voltage of each elementary storage battery subgroup, if the terminal voltage of elementary storage battery subgroup is not less than the 60-90% of the nominal voltage of described elementary storage battery subgroup, for example, be not less than 9.5V, 12V bi-directional DC-DC rectification charge-discharge modules is not worked.
If the terminal voltage of elementary storage battery subgroup is greater than 5V and is less than 9.5V, once over-discharge can of storage battery is described, the elementary storage battery subgroup for terminal voltage within the scope of this, 12V bi-directional DC-DC rectification charge-discharge modules starts.For fear of excessive to charge in batteries electric current, cause thermal runaway, by monitoring the terminal voltage of elementary storage battery subgroup, separately this elementary storage battery subgroup is carried out to stable trickle charge, thereby activate storage battery.When trickle charge, can use for example charge rate of C/15-C/10, preferably the charge rate of this trickle charge is C/12.In this trickle charge stage, the terminal voltage of elementary storage battery subgroup starts to rise.
In third step, when this elementary storage battery subgroup terminal voltage rises to the threshold value that can accept boost charge charging, stop the independent charging to this elementary storage battery subgroup.In the exemplary embodiment, this threshold value is for example the 85-95% of the nominal voltage of elementary storage battery subgroup, is preferably 11V.For the terminal voltage elementary storage battery subgroup within the scope of the 85-95% of the nominal voltage of elementary storage battery subgroup not, system automatically starts 12V bi-directional DC-DC rectification charge-discharge modules and adjusts one/secondary equalizer and two-way direct tentaculum, thereby by the circulating charging that distributes of respective primary storage battery subgroup, make the terminal voltage of each elementary storage battery subgroup rise to the threshold value that can accept boost charge charging.
In the 4th step, when the terminal voltage of elementary storage battery subgroup reaches the threshold value that can accept boost charge charging, for example, while reaching 11V, the saturation voltage by this elementary storage battery subgroup boost charge to this elementary storage battery subgroup.Alternatively, when the terminal voltage of all 4 elementary storage battery subgroups all reaches the threshold value that can accept boost charge charging, carry out above-mentioned boost charge.Alternatively, in the time of can reaching in the terminal voltage of each elementary storage battery subgroup the threshold value that can accept boost charge charging, carry out immediately above-mentioned boost charge.
In the exemplary embodiment, the charge rate of described boost charge is 2C-10C, is preferably 5C.Described saturation voltage, than the high 5-25% of the nominal voltage of this elementary storage battery subgroup, is preferably 13V.
When above-mentioned boost charge, must constantly detect following key technical index: whether the safe voltage that whether circuit occurs is opened circuit, whether battery occurs unbalanced phenomena, whether battery reaches regulation, battery whether excess Temperature, battery meet-△ V or △ T/ △ t condition.Yet these technical indicators and monitoring method thereof are well known to those skilled in the art, therefore at this, be not described in detail.
In the 5th step, when the nominal voltage described elementary storage battery subgroup that is 12V is all charged to its saturation voltage, 24V bi-directional DC-DC rectification charge-discharge modules starts, thereby the secondary storage battery subgroup that is 24V to nominal voltage is charged.
According to the similar mode of elementary storage battery subgroup that is 12V to nominal voltage, judge whether once over-discharge can of this secondary storage battery subgroup, and the in the situation that of over-discharge can once by this secondary storage battery subgroup trickle charge to the threshold voltage that can accept boost charge, then by this secondary storage battery subgroup boost charge to saturation voltage.Similar with abovementioned steps, the charge rate of trickle charge can be C/15-C/10, is preferably C/12; The charge rate of boost charge can be 2C-10C, is preferably 5C; The threshold voltage that can accept boost charge is for example the 85-95% of the nominal voltage of secondary storage battery subgroup, is preferably 22V; And this saturation voltage is than the high 5-25% of the nominal voltage of this secondary storage battery subgroup, is preferably 26V.
In the 6th step, when the nominal voltage described secondary storage battery subgroup that is 24V is all charged to its saturation voltage, 36V bi-directional DC-DC rectification charge-discharge modules starts, thereby the secondary storage battery subgroup that is 36V to nominal voltage is charged.
According to being the similar mode of the primary/secondary storage battery subgroup of 12V, 24V to nominal voltage, judge whether once over-discharge can of this secondary storage battery subgroup, and the in the situation that of over-discharge can once by this secondary storage battery subgroup trickle charge to the threshold voltage that can accept boost charge, then by this secondary storage battery subgroup boost charge to saturation voltage.Similar with abovementioned steps, the charge rate of trickle charge can be C/15-C/10, is preferably C/12; The charge rate of boost charge can be 2C-10C, is preferably 5C; The threshold voltage that can accept boost charge is for example the 85-95% of the nominal voltage of secondary storage battery subgroup, is preferably 33V; And this saturation voltage is than the high 5-25% of the nominal voltage of this secondary storage battery subgroup, is preferably 36.7V.
In the 7th step, when the nominal voltage described secondary storage battery subgroup that is 36V is all charged to its saturation voltage, 48V bi-directional DC-DC rectification charge-discharge modules starts, thereby the secondary storage battery subgroup that is 48V to nominal voltage is charged.
According to being the similar mode of the primary/secondary storage battery subgroup of 12V, 24V to nominal voltage, judge whether once over-discharge can of this secondary storage battery subgroup, and the in the situation that of over-discharge can once by this secondary storage battery subgroup trickle charge to the threshold voltage that can accept boost charge, then by this secondary storage battery subgroup boost charge to saturation voltage.Similar with abovementioned steps, the charge rate of trickle charge can be C/15-C/10, is preferably C/12; The charge rate of boost charge can be 2C-10C, is preferably 5C; The threshold voltage that can accept boost charge is for example the 85-95% of the nominal voltage of secondary storage battery subgroup, is preferably 44V; And this saturation voltage is than the high 5-25% of the nominal voltage of this secondary storage battery subgroup, is preferably 56.4V.
So far, the whole charging process of batteries 300 finishes.
According to above preferred embodiment, the present invention is according to the elementary storage battery subgroup of 12V, 24V level storage battery subgroup, 36V level storage battery subgroup and the substep charging step by step of 48V level storage battery subgroup, thereby solved the problem of cell batteries undercharge, prevent that part secondary battery unit from overcharging, and part secondary battery unit undercharge, and then it is whole harmonious consistent to have realized batteries.
When electric discharge, according to real-time voltage and/or the power demand of load 400, charging-discharging controller 500 dynamically mates the battery capacity (storage battery number) discharging and recharging, namely dynamically convert the structure of charge-discharge circuit system of the present invention, select corresponding elementary storage battery subgroup or secondary storage battery subgroup to the direct direct current supply of load 400, thereby realize optimal discharge.
The balancing effect of batteries according to the present invention when when design taken into full account that series-connected batteries discharges and recharges, can be advantageously applied to the control that discharges and recharges of series-connected batteries, can improve series-connected batteries operating efficiency, extend its useful life; Also consider that this batteries mainly coordinates military not power cutoff device to use, and also taken into full account complexity and the particularity of Military Application environment, thereby batteries of the present invention is with a wide range of applications aspect dual-use when it designs simultaneously.
Embodiments of the invention also disclose a kind of system to batteries management of charging and discharging, the charging-discharging controller that described system comprises the method step that can operate to carry out above-mentioned management of charging and discharging.Method step and the technique effect thereof of described management of charging and discharging are described in detail in the above-described embodiments, do not repeat them here.
Disclosed herein is specific embodiment of the present invention, but should be appreciated that the disclosed embodiments are only exemplary embodiments of the present invention, and can carry out specific implementation the present invention according to various ways.Therefore, concrete structure disclosed herein and function detail should not be read as and limit the invention.Therefore, it is all possible carrying out within the scope of the appended claims many adjustment or improving, and described adjustment or improvement drop in the scope of the present invention being limited by appended claims.
Claims (19)
1. a batteries that comprises a plurality of secondary battery units, comprises: a plurality of elementary storage battery subgroups, and the secondary battery unit that described in each, elementary storage battery subgroup comprises two above series connection,
Wherein, when the terminal voltage of a plurality of elementary storage battery subgroups described in each is not less than first threshold voltage, this batteries is in the first mode of operation, and now described elementary storage battery subgroup is to load supplying; And
Wherein when the terminal voltage of a plurality of elementary storage battery subgroups described at least one is during lower than described first threshold voltage, this batteries is in the second mode of operation, now terminal voltage charges to the saturation voltage of this elementary storage battery subgroup lower than the elementary storage battery subgroup of first threshold voltage
Wherein under described the first mode of operation, according to the voltage of load and/or power demand, by elementary storage battery subgroup or secondary storage battery subgroup to load direct current supply,
Wherein, under described the second mode of operation, after elementary storage battery subgroup charges to the saturation voltage of described elementary storage battery subgroup, secondary storage battery subgroup is charged to the saturation voltage of described secondary storage battery subgroup, and
The 60-90% that wherein said first threshold voltage is nominal voltage, described saturation voltage is than the high 5-25% of nominal voltage.
2. batteries as claimed in claim 1, wherein two the above elementary storage battery subgroups are connected in series and form secondary storage battery subgroup.
3. batteries as claimed in claim 1, wherein said elementary storage battery subgroup is charged by the charge-discharge modules corresponding with its nominal voltage respectively with secondary storage battery subgroup.
4. batteries as claimed in claim 1, wherein under described the second mode of operation, terminal voltage charges to Second Threshold voltage lower than the elementary storage battery subgroup of first threshold voltage with the first charge rate, then with the second charge rate, charges to the saturation voltage of this elementary storage battery subgroup.
5. batteries as claimed in claim 4, wherein, under described the second mode of operation, described the first charge rate is C/15-C/10, and described the second charge rate is 2C-10C.
6. batteries as claimed in claim 4, the 85-95% that wherein said Second Threshold voltage is nominal voltage.
7. the batteries as described in any one in claim 1-6, the number of wherein said secondary battery unit is 24, and wherein described in each elementary storage battery subgroup comprise 2,3,4,6,8 or 12 secondary battery units.
8. batteries as claimed in claim 3, wherein described in each, elementary storage battery subgroup comprises 6 secondary battery units, and wherein said charge-discharge modules comprises 12V, 24V, 36V, tetra-of 48V discharge and recharge submodule.
9. the batteries as described in any one in claim 1-6, wherein said secondary battery unit is lead acid accumulator.
10. the method to the batteries management of charging and discharging that comprises a plurality of secondary battery units, this batteries comprises a plurality of elementary storage battery subgroups, the secondary battery units that described in each, elementary storage battery subgroup comprises two above series connection, described method comprises:
When the terminal voltage of a plurality of elementary storage battery subgroups described in each is not less than first threshold voltage, make described batteries in the first mode of operation, now described elementary storage battery subgroup is used for load supplying; And
When the terminal voltage of a plurality of elementary storage battery subgroups described at least one is during lower than described first threshold voltage, make described batteries in the second mode of operation, now terminal voltage is charged to the saturation voltage of this elementary storage battery subgroup lower than the elementary storage battery subgroup of first threshold voltage
Wherein under described the first mode of operation, according to the voltage of load and/or power demand, by elementary storage battery subgroup or secondary storage battery subgroup to load direct current supply,
Wherein, under described the second mode of operation, after elementary storage battery subgroup charges to the saturation voltage of described elementary storage battery subgroup, secondary storage battery subgroup is charged to the saturation voltage of described secondary storage battery subgroup, and
The 60-90% that wherein said first threshold voltage is nominal voltage, described saturation voltage is than the high 5-25% of nominal voltage.
11. methods as claimed in claim 10, wherein two the above elementary storage battery subgroups are connected in series and form secondary storage battery subgroup.
12. methods as claimed in claim 11, wherein said elementary storage battery subgroup is charged by the charge-discharge modules corresponding with its nominal voltage respectively with secondary storage battery subgroup.
13. methods as claimed in claim 10, wherein under described the second mode of operation, make terminal voltage with the first charge rate, charge to Second Threshold voltage lower than the elementary storage battery subgroup of first threshold voltage, then with the second charge rate, charge to the saturation voltage of this elementary storage battery subgroup.
14. methods as claimed in claim 13, wherein, under described the second mode of operation, are used the first charge rate of C/15-C/10 and the second charge rate of 2C-10C.
15. methods as claimed in claim 13, the 85-95% that wherein said Second Threshold voltage is nominal voltage.
16. methods as described in any one in claim 10-15, the number of wherein said secondary battery unit is 24, and wherein described in each elementary storage battery subgroup comprise 2,3,4,6,8 or 12 secondary battery units.
17. methods as claimed in claim 12, wherein described in each, elementary storage battery subgroup comprises 6 secondary battery units, and wherein said charge-discharge modules comprises 12V, 24V, 36V, tetra-of 48V discharge and recharge submodule.
18. methods as described in any one in claim 10-15, wherein said secondary battery unit is lead acid accumulator.
19. 1 kinds of systems to the batteries management of charging and discharging that comprises a plurality of secondary battery units, this batteries comprises a plurality of elementary storage battery subgroups, the secondary battery unit that described in each, elementary storage battery subgroup comprises two above series connection, described system comprises the charging-discharging controller that can operate to carry out following step:
When the terminal voltage of a plurality of elementary storage battery subgroups described in each is not less than first threshold voltage, make described batteries in the first mode of operation, now described elementary storage battery subgroup is used for load supplying; And
When the terminal voltage of a plurality of elementary storage battery subgroups described at least one is during lower than described first threshold voltage, make described batteries in the second mode of operation, now terminal voltage is charged to the saturation voltage of this elementary storage battery subgroup lower than the elementary storage battery subgroup of first threshold voltage
Wherein under described the first mode of operation, according to the voltage of load and/or power demand, by elementary storage battery subgroup or secondary storage battery subgroup to load direct current supply,
Wherein, under described the second mode of operation, after elementary storage battery subgroup charges to the saturation voltage of described elementary storage battery subgroup, secondary storage battery subgroup is charged to the saturation voltage of described secondary storage battery subgroup, and
The 60-90% that wherein said first threshold voltage is nominal voltage, and described saturation voltage is than the high 5-25% of nominal voltage.
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| CN103247814B (en) * | 2013-05-14 | 2015-06-24 | 大连融科储能技术发展有限公司 | Leakage protection method and system of redox flow cell system as well as redox flow cell system |
| CN104393644B (en) * | 2014-11-27 | 2017-01-25 | 南车株洲电力机车有限公司 | Energy storage system voltage balance control method and system and voltage balance modules |
| CN105244554B (en) * | 2015-06-30 | 2019-07-05 | 惠州市亿能电子有限公司 | It is a kind of to determine method with the matched euqalizing current value of electrokinetic cell system |
| US20190288320A1 (en) | 2016-08-17 | 2019-09-19 | Dalian Rongkepower Co., Ltd | Flow battery system and large scale flow battery energy storage device |
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| CN101764417A (en) * | 2009-05-19 | 2010-06-30 | 甘肃卓越电子科技有限公司 | Intelligent adaptive charge management device for lithium polymer storage battery and control system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101764417A (en) * | 2009-05-19 | 2010-06-30 | 甘肃卓越电子科技有限公司 | Intelligent adaptive charge management device for lithium polymer storage battery and control system thereof |
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