CN101051701A - Pulse quick charging method and system for accumulator - Google Patents
Pulse quick charging method and system for accumulator Download PDFInfo
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- CN101051701A CN101051701A CNA2007100799847A CN200710079984A CN101051701A CN 101051701 A CN101051701 A CN 101051701A CN A2007100799847 A CNA2007100799847 A CN A2007100799847A CN 200710079984 A CN200710079984 A CN 200710079984A CN 101051701 A CN101051701 A CN 101051701A
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Abstract
The method includes following steps: in procedure for charging accumulator in constant electrical current, pulse current is added in good time to carry out discharge; monitoring variety of charging and discharging time values to determine state of charging accumulator; controlling quick pulse charging operation for accumulator based on charging state. Eliminating polarization phenomena quickly and effectively when charging accumulator, the invention increases speed and shortens charging time, and raises charging efficiency. Especially, the invention avoids undercharge from occurring in area, where environment of electric grid is execrable so as to prolong service life of accumulator.
Description
Technical field
The present invention relates to the storage battery field, relate in particular to a kind of battery impulse fast charge method and charging system.
Background technology
Along with the develop rapidly of mobile communication scale, unattended outdoor base station is more and more, but a lot of in recent years operator generally reacts, and there is bigger problem in outdoor base station with storage battery.Valve-regulated sealed lead-acid VRLA storage battery with generally employing is an example, for with the similar VRLA storage battery of producer, outdoor base station with storage battery than central office station with reducing greatly the useful life of storage battery, well below the battery designs life-span, as average life of the battery of capacity 2V less than 3 years, the average life of the battery of capacity 12V was less than 1 year.This has caused enormous economic loss to operator.
Outdoor base station is scrapped the dissection and analysis of VRLA storage battery according to storage battery producer, think that the main cause that causes the life of storage battery to stop is because frequent power failure of the power grid environment of outdoor base station location and interruption duration are long, cause the frequent overdischarge of storage battery, owe charging, thereby cause storage battery sulfation to occur and lost efficacy.Present being becoming tight electricity consumption situation day all over the world, particularly Pian Yuandiqu abominable electrical network present situation also is difficult to solve in a long time, therefore, abominable power grid environment uses the normal charge and discharge of storage battery and has proposed higher requirement, how to guarantee that outdoor base station is the technical barrier of industry common concern with the useful life of storage battery.
The accumulator charging method that in the industry cycle generally adopts mainly contains following several at present:
1) adopt current limliting constant voltage charge method, promptly with the constant current charge of regulation to predetermined voltage, change constant voltage charge into and finish the residue charging and be full of fully until battery, the charging process sketch common all fills, floating charge all belongs to this kind charging method as shown in Figure 1.This charging method can drop to the gas amount of separating out minimum, be applicable to the VRLA storage battery, but shortcoming is that the charging interval is longer, storage battery is full of electricity fully generally needs 16～20 hours, in the frequent area that has a power failure, be easy to cause the situation of charge in batteries deficiency, thereby cause the battery sulfuric acid salinization and lost efficacy.
2) adopt time-dependent current batch (-type) mise-a-la-masse method, promptly adopt big electric current to carry out constant current charge at the charging initial stage, after charging voltage reaches setting, intermittently stop filling a period of time, adopt small electric stream to charge subsequently, after charging voltage reaches setting, intermittently stop filling a period of time again, adopt littler electric current to charge subsequently again; So circulation, charging current is constantly successively decreased, and until battery is full of electricity fully, its charging process sketch is as shown in Figure 2.Why to intermittently stop to fill, be because oxygen that storage battery produces through chemical reaction and hydrogen are regrouped if having time and be absorbed, make concentration polarization and electrochemical polarization naturally and understandably to be eliminated like this, thereby reduced the charging polarization potential of storage battery, the constant current charge of next round can more successfully be carried out, and storage battery can charge into more electric weight quickly like this.But, make the charging interval prolong owing to need intermittently stop to fill a period of time; Simultaneously, because depolarising is that nature carries out, thus the unpolarizing DeGrain, and, also further prolonged the charging interval along with the reduction of charging current.
3) adopt the clearance-type pulse charging method, promptly by adopting clearance-type pulse power system, duty ratio and current value that the control impuls charging is required, stop filling a period of time after making pulse unit of charge in batteries, the next pulse unit continues accumulators again and charges subsequently, and its charging process sketch as shown in Figure 3.In charging process, the charging pulse unit charges storage battery, oxygen that inside battery produces and hydrogen are regrouped if having time and be absorbed and intermittently stop the phase of filling, concentration polarization and electrochemical polarization are eliminated naturally, thereby next round charging pulse unit can more successfully be carried out, guarantee that storage battery can charge into more electric weight quickly.But same, owing to intermittently stop having filled a period of time, make the charging interval still very long, and process of depolarization herein also is that nature carries out, so the unpolarizing effect is also not obvious, and the duration of pulse unit shorten gradually, thereby further prolonged the charging interval.
As can be seen, the problem that the above charging method ubiquity charging interval is long, charge efficiency is not high like this in frequent power failure, the abominable area of power grid environment, is easy to cause the situation of charge in batteries deficiency, thereby cause storage battery owing to sulfation lost efficacy, cause serious economy loss.
Summary of the invention
In view of above-mentioned existing in prior technology problem, embodiments of the present invention provide a kind of battery impulse quick charge method and charging system.
Embodiments of the present invention are achieved through the following technical solutions, and specifically comprise step:
A: storage battery is carried out constant current charge with constant current Ia;
B: storage battery is carried out pulsed discharge with pulse current Ib;
C: the operation of above A, B step is carried out in circulation, and obtain each charging interval value and/or pulse discharge time value, situation of change according to charging interval value and/or pulse discharge time value, judge the charged state of storage battery, and operate according to the fast pulse charger of described charged state control storage battery.
Embodiment of the present invention also provides a kind of battery impulse quick charging system, specifically comprises:
Constant current charge unit: be used to provide constant current that storage battery is carried out constant current charge;
Pulsed discharge unit: be used to provide pulse current that storage battery is carried out pulsed discharge;
Detect monitoring unit: the charging interval value and/or the pulse discharge time value that are used to obtain each charge and discharge operation;
Control unit: be used for situation of change, judge the charged state of storage battery, and operate according to the fast pulse charger of described charged state control storage battery according to the charge and discharge time value that gets access to.
The technical scheme that is provided by the invention described above execution mode as can be seen, owing to by in the process of storage battery constant current charge, in time add pulse current and discharge, eliminated the charge in batteries polarization phenomena rapidly and effectively, improve charging rate, shortened the charging interval; And, judge the charged state of storage battery exactly by monitoring to charge and discharge time value situation of change, and improved charge efficiency, thereby avoided situation in the abominable regional charge in batteries deficiency of power grid environment, prolonged the useful life of storage battery.
Description of drawings
Fig. 1 is a current limliting constant voltage charge method charging process sketch in the prior art;
Fig. 2 is a time-dependent current batch (-type) mise-a-la-masse method charging process sketch in the prior art;
Fig. 3 is a prior art intermediate gap formula pulse charging method charging process sketch;
Fig. 4 is the acceptable optimal charge curve chart of storage battery in the prior art;
Fig. 5 is the charging process flow chart of the described method of embodiment of the present invention;
Fig. 6 is the charged state monitoring flow chart of the described method of embodiment of the present invention;
Fig. 7 is the block diagram of the described system of embodiment of the present invention;
Fig. 8 is the charging process sketch of the described method of embodiment of the present invention.
Embodiment
Embodiment of the present invention provides a kind of battery impulse quick charge method and charging system.
For the clear complete described method of explanation embodiment of the present invention, the principle of existing paired pulses fast charge method once briefly introduces:
In twentieth century sixties, U.S. scientist Maas has been made great deal of experimental to the charging process of rich solution storage battery, and having proposed with minimum gas efficiency is prerequisite, the acceptable optimal charge curve of storage battery, as shown in Figure 4.Experiment shows, if actual charge current is equaled all the time or approach the acceptable charging current of storage battery, then charging rate just can be accelerated greatly, and gas efficiency also can be controlled in the very low scope main theoretical basis of the reform of Chinese economic structure of quick charge that Here it is.
Embodiment of the present invention is utilized above principle exactly, and a kind of battery impulse quick charge method is provided, and for better describing the described method of embodiment of the present invention, now in conjunction with the accompanying drawings the specific embodiment of the present invention is elaborated:
The charging process flow chart of the described method of embodiment of the present invention as shown in Figure 5.
Among Fig. 5, in step 11: storage battery is carried out constant current charge with constant current Ia.
The size of this constant current Ia and the specifications and models of storage battery are closely related, and, therefore the requirement that the constant current charge electric current satisfies different battery specifications and producer need be set because that the maximum charging current value that each storage battery producer requires and maximum discharge current value also have is different.In embodiment of the present invention, constant current charge electric current I a≤storage battery maximum charging current, this maximum charging current are set according to the storage battery of different size model by the battery manufacturer man.
Step 12: in charging process, detect charge in batteries voltage, this charge in batteries voltage is the battery cell charging voltage.
Step 13: judge whether charge in batteries voltage reaches charge threshold voltage, in this way, then execution in step 14; Otherwise execution in step 11 continues storage battery is carried out constant current charge.
Charge threshold voltage wherein can be storage battery gassing voltage, described storage battery gassing voltage refers to: when storage battery carries out constant current charge with certain electric current, charge in batteries voltage is after reaching certain value, the gas of internal storage battery will be separated out, the battery tension value of this moment is storage battery gassing voltage, and storage battery gassing voltage can be determined by concrete test.
Step 14: storage battery is carried out pulsed discharge with pulse current Ib.
Why storage battery is carried out the pulsed discharge operation, be because in charging process, if adopt big electric current to charge, will cause producing on the positive/negative plate of internal storage battery big electrochemical polarization and concentration polarization, improved the electrode potential on the positive/negative plate, cause the gassing rate to raise gradually, so the electrochemical polarization and the concentration polarization of inside battery is the precondition that realizes quick charge when managing to eliminate charging.Formation mechanism according to polarizing voltage, the variation that the size of polarizing voltage follows charging current closely changes, if can provide a discharge channel by its back discharge for storage battery, then concentration polarization and electrochemical polarization will rapidly disappear, and just can guarantee that follow-up storage battery can continue charging by big electric current.So, in the charging process of storage battery, in time add the pulse high current discharge, just can eliminate the charge in batteries polarization potential rapidly and effectively, thereby improve charging rate, shorten the charging interval.
Impulse discharge current Ib 〉=Ia wherein, preferred Ib 〉=3Ia, adopting bigger impulse discharge current is in order to make the depolarising effect of storage battery more obvious, and Ib≤storage battery maximum discharge current, this maximum discharge current are set according to the storage battery of different size model by the battery manufacturer man.
Step 15: in discharge process, detect the battery impulse discharge voltage.
Step 16: judge whether the battery impulse discharge voltage reaches discharge threshold voltage, in this way, then return execution in step 11, storage battery is carried out constant current charge; Otherwise execution in step 14 is proceeded pulsed discharge.
Discharge threshold voltage wherein can be the battery discharging cut-ff voltage, predefined end voltage when this cut-ff voltage is the battery impulse discharge, and in embodiment of the present invention, this voltage 〉=1.00V/cell (volt/unit).
Above charge and discharge operation is carried out in circulation, and behind each charge and discharge EO, carries out following operation:
As shown in Figure 6, in step 21: obtain each charging interval value and/or pulse discharge time value, obtain manner can obtain by detecting, and also can wait other modes to obtain by receiving outside input.
Step 22: according to the situation of change of charging interval value and/or pulse discharge time value, judge the charged state of storage battery, specifically, judge exactly whether the charging interval value is tending towards stability, remaining unchanged through after several charge and discharge operational cycle, in this way, execution in step 23 then; Continue execution in step 21 otherwise return.
In step 22, can judge also whether the pulse discharge time value is tending towards stability, remaining unchanged through after several charge and discharge operational cycle, and in this way, then execution in step 23; Continue execution in step 21 otherwise return.Whether the ratio that can also judge the charge and discharge time value is tending towards stability, is remaining unchanged through after several charge and discharge operational cycle, and in this way, then execution in step 23; Continue execution in step 21 otherwise return.
Step 23: stop the above charge and discharge operation, the fast pulse charger process finishes.
Why be used as judging the foundation of battery state of charge according to the situation of change of charging interval value and/or pulse discharge time value, be because of prolongation along with the charge in batteries time, its charge capacity constantly increases, the time that reaches charge threshold voltage with Ia electric current constant current charge will be shorter and shorter, the time that reaches discharge threshold voltage with the Ib current pulse discharge will be more and more longer, and after storage battery is full of electricity fully, charging interval and discharge time will be basicly stable, change very little even constant, so can be used as the criterion that the battery impulse quick charge finishes according to this specific character of storage battery.
In addition,, can in time replenish the energy that the storage battery self discharge is consumed, can also continue the operation of execution in step 24 in order to allow storage battery after the fast pulse charger process finishes.
Step 24: storage battery is switched to the floating charge state,, can replenish the energy that the storage battery self discharge is consumed, make storage battery always be in the full charge state, help the normal use of storage battery by storage battery is carried out floating charge.
Simultaneously, carry out in the process of above charge and discharge operation, can also reduce the temperature in the battery charging process, make the battery temp can be less than the temperature under the normal protection of storage battery by regulating the size of constant charge current Ia in circulation.Specifically; exactly in the process of charge and discharge that circulates; regularly or the temperature of real-time detection storage battery; when battery temp reaches assigned temperature; the assigned temperature here is generally less than the temperature under the normal protection of storage battery; just can be by regulating the pre-current limliting of rectification module or reducing rectification module and limit voltage method in advance; a suitably turns down according to certain ratio with the charge in batteries electric current I; with the heat that reduces to charge and produce; thereby reduce the temperature of storage battery, the temperature that makes storage battery is less than assigned temperature.If the temperature that still can not make storage battery after turning down Ia is less than assigned temperature, then continue to turn down according to the method described above charging current Ia, finish less than assigned temperature or up to the charging process of embodiment of the present invention up to the temperature of storage battery.
Turning down of charge in batteries electric current can prolong the charging interval that storage battery charges fully, but it is constant that the charge and discharge time value is tending towards the trend of some stationary values, because after storage battery charges fully, adopt certain current value constant current charge to the charging interval that reaches storage battery gassing voltage, and be constant substantially the discharge time of adopting certain impulse discharge current value to be discharged to cut-ff voltage.Therefore after charging current is regulated, the also criterion that still situation of change of charge and discharge time value can be charged fully as storage battery.
Embodiment of the present invention also provides a kind of battery impulse quick charging system, and its structured flowchart as shown in Figure 7.
Charging system among Fig. 7 mainly is made up of constant current charge unit 11, pulsed discharge unit 12, detection monitoring unit 13 and control unit 14, and constant current charge unit 11 wherein is used to provide constant current that storage battery is carried out constant current charge; Pulsed discharge unit 12 is used to provide pulse current that storage battery is carried out pulsed discharge; Detecting monitoring unit 13 is used for obtaining charging interval value and/or pulse discharge time value behind each charge and discharge EO;
Above-described detection monitoring unit 13 also can be used for detecting the charge in batteries voltage in the charging process, with the battery impulse discharge voltage in the discharge process, and can be in storage battery circulates the charge and discharge process, the temperature of the detection storage battery of timing or not timing.
And control unit 14 also can be according to the comparable situation of above detected charge in batteries voltage and charge threshold voltage, and the comparable situation of detected battery impulse discharge voltage and discharge threshold voltage, control system is switched between the charge and discharge operation, specifically, be exactly in charging process, when charge in batteries voltage reached charge threshold voltage, the control impuls discharge cell carried out the pulsed discharge operation to storage battery; And in the pulsed discharge process, when the battery impulse discharge voltage reached discharge threshold voltage, control constant current charge unit carried out the constant current charge operation to storage battery; And,
Outside top, system can comprise also unit 15 and floating charge unit 16 are set that the unit 15 that is provided with wherein is used for described constant charge current Ia, impulse discharge current Ib, charge threshold voltage, discharge threshold voltage and assigned temperature are carried out initial setting up respectively; Floating charge unit 16 is used for after the battery impulse quick charge finishes, and is switched by control unit storage battery is carried out conventional floating charge, and the purpose of this floating charge is in order to replenish the energy that the storage battery self discharge is consumed, to make storage battery always be in the full charge state.
For better describing embodiment of the present invention, now in conjunction with specific embodiments its technical scheme is described further:
Embodiment 1: with common valve-regulated sealed lead-acid VRLA storage battery is example, before charging a battery, earlier according to the state before the charge in batteries, can be to each parameter value in unit 15 is set, comprise that constant charge current Ia, impulse discharge current Ib, charge threshold voltage, discharge threshold voltage and assigned temperature carry out initial setting up respectively, charging current Ia=VRLA storage battery maximum charging current wherein; Impulse discharge current Ib=Ia; Charge threshold voltage is the gassing voltage of VRLA storage battery; Predefined end voltage when discharge threshold voltage is the discharge of VRLA battery impulse, this voltage=1.00V/cell; Assigned temperature is generally less than the temperature under the normal protection of storage battery, gets 53 ℃ in the present embodiment.
Be illustrated in figure 8 as the process of fast pulse charger: at the charging initial stage, earlier with the electric current of Ia storage battery is carried out constant current charge by constant current charge unit 11, in charging process, detect charge in batteries voltage by detecting monitoring unit 13, when charge in batteries voltage reaches charge threshold voltage, system switches to discharge condition, carries out the pulsed discharge operation by 12 pairs of storage batterys of control unit 14 control impuls discharge cells, and impulse discharge current is Ib; In discharge process, detect the battery impulse discharge voltage by detecting monitoring unit 13, when the battery impulse discharge voltage reached discharge threshold voltage, system switched to charged state, carried out the constant current charge operation by the 11 pairs of storage batterys in control unit 14 control constant current charge unit.
In the process of carrying out above cycling, behind each charge and discharge EO, all detect the charging interval value by detecting monitoring unit 13, when the charging interval value remains unchanged after several charge and discharge operational cycle of process, just can judge that storage battery is full of fully, control unit 14 stops the above charge and discharge operational cycle with regard to control system, and the process of fast pulse charger finishes.
Simultaneously, system can also be in storage battery circulates the charge and discharge process, at any time monitor the temperature of storage battery by detecting monitoring unit 13, when battery temp reaches assigned temperature, control unit 14 is just controlled constant current charge unit 11 reduction that constant charge current Ia is suitable, so that the charging current after reducing is after a period of time that charges a battery, the temperature of storage battery can carried out various operations to guarantee the VRLA storage battery less than assigned temperature under normal temperature environment.
Embodiment 2: be example with common valve-regulated sealed lead-acid VRLA storage battery still, charging current Ia wherein＜VRLA storage battery maximum charging current before charging a battery, can be set each parameter value in unit 15 is set; And impulse discharge current Ib=3Ia, and Ib≤storage battery maximum discharge current; Charge threshold voltage is the gassing voltage of VRLA storage battery; Predefined end voltage when discharge threshold voltage is the discharge of VRLA battery impulse, this voltage＞1.00V/cell; Assigned temperature is generally less than the temperature under the normal protection of storage battery, gets 45 ℃ in the present embodiment.
Be illustrated in figure 8 as the process of fast pulse charger: at the charging initial stage, earlier with the electric current of Ia storage battery is carried out constant current charge by constant current charge unit 11, in charging process, detect charge in batteries voltage by detecting monitoring unit 13, when charge in batteries voltage reaches charge threshold voltage, system switches to discharge condition, carries out the pulsed discharge operation by 12 pairs of storage batterys of control unit 14 control impuls discharge cells, and impulse discharge current is Ib; In discharge process, detect the battery impulse discharge voltage by detecting monitoring unit 13, when the battery impulse discharge voltage reached discharge threshold voltage, system switched to charged state, carried out the constant current charge operation by the 11 pairs of storage batterys in control unit 14 control constant current charge unit.
In the process of carrying out above cycling, behind each charge and discharge EO, all detect value discharge time by detecting monitoring unit 13, when discharge time, value remained unchanged after several charge and discharge operational cycle of process, just can judge that storage battery is full of fully, control unit 14 stops the above charge and discharge operational cycle with regard to control system, and the process of fast pulse charger finishes.
Simultaneously, system can also fill in the storage battery circulation, in the discharge process, by detecting the temperature that monitoring unit 13 regularly detects storage battery, when battery temp 〉=assigned temperature, control unit 14 is just controlled constant current charge unit 11 reduction that constant charge current Ia is suitable, so that the charging current after reducing is after a period of time that charges a battery, detected battery temp can be less than assigned temperature, if battery temp still 〉=assigned temperature, then continue to reduce constant charge current Ia, less than assigned temperature, guarantee that with this VRLA storage battery can carry out various operations under normal temperature environment up to battery temp.
Embodiment 3: be example with common valve-regulated sealed lead-acid VRLA storage battery still, charging current Ia wherein＜VRLA storage battery maximum charging current before charging a battery, can be set each parameter value in unit 15 is set; And impulse discharge current Ib＞Ia, and Ib≤storage battery maximum discharge current; Charge threshold voltage is the gassing voltage of VRLA storage battery; Predefined end voltage when discharge threshold voltage is the discharge of VRLA battery impulse, this voltage＞1.00V/cell; Assigned temperature is generally less than the temperature under the normal protection of storage battery, gets 45 ℃ in the present embodiment.
Be illustrated in figure 8 as the process of fast pulse charger: at the charging initial stage, earlier with the electric current of Ia storage battery is carried out constant current charge by constant current charge unit 11, in charging process, detect charge in batteries voltage by detecting monitoring unit 13, when charge in batteries voltage reaches charge threshold voltage, system switches to discharge condition, carries out the pulsed discharge operation by 12 pairs of storage batterys of control unit 14 control impuls discharge cells, and impulse discharge current is Ib; In discharge process, detect the battery impulse discharge voltage by detecting monitoring unit 13, when the battery impulse discharge voltage reached discharge threshold voltage, system switched to charged state, carried out the constant current charge operation by the 11 pairs of storage batterys in control unit 14 control constant current charge unit.
In the process of carrying out above cycling, behind each charge and discharge EO, all monitoring unit 13 detects the charging interval value and be worth discharge time by detecting, when the ratio of charge and discharge time value remains unchanged after several charge and discharge operational cycle of process, just can judge that storage battery is full of fully, control unit 14 stops the above charge and discharge operational cycle with regard to control system, and the process of fast pulse charger finishes.
Simultaneously, system can also fill in the storage battery circulation, in the discharge process, by the detection battery temp that detects monitoring unit 13 not timings, when battery temp 〉=assigned temperature, control unit 14 is just controlled constant current charge unit 11 reduction that constant charge current Ia is suitable, so that the charging current after reducing is after a period of time that charges a battery, detected battery temp can be less than assigned temperature, if battery temp still 〉=assigned temperature, then continue to reduce constant charge current Ia, less than assigned temperature, guarantee that with this VRLA storage battery can carry out various operations under normal temperature environment up to battery temp.
In addition, in above three embodiment, system can also comprise floating charge unit 16, it can be after the battery impulse quick charge finishes, switch the floating charge that storage battery is carried out routine by control unit, the purpose of this floating charge is in order to replenish the energy that the storage battery self discharge is consumed, to make storage battery always be in the full charge state, helping the normal use of VRLA storage battery.
In sum, embodiment of the present invention can be eliminated the charge in batteries polarization phenomena rapidly and effectively, thereby raising charging rate, shorten the charging interval, and can judge the charged state of storage battery exactly, and make storage battery can be in fully charged state, improved charge efficiency, thereby avoided situation, prolonged the useful life of storage battery in the abominable regional charge in batteries deficiency of power grid environment.
The above; it only is the preferable specific embodiment of embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that embodiment of the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (12)
1, a kind of battery impulse fast charge method is characterized in that, comprises step:
A: storage battery is carried out constant current charge with constant current Ia;
B: storage battery is carried out pulsed discharge with pulse current Ib;
C: the operation of above A, B step is carried out in circulation, and obtain each charging interval value and/or pulse discharge time value, situation of change according to charging interval value and/or pulse discharge time value, judge the charged state of storage battery, and operate according to the fast pulse charger of described charged state control storage battery.
2, battery impulse fast charge method as claimed in claim 1 is characterized in that, described steps A specifically comprises:
With constant current Ia storage battery is carried out constant current charge, reach charge threshold voltage until charge in batteries voltage.
3, battery impulse fast charge method as claimed in claim 2 is characterized in that, described charge threshold voltage is storage battery gassing voltage.
4, battery impulse fast charge method as claimed in claim 1 is characterized in that, described step B further comprises:
With pulse current Ib storage battery is carried out pulsed discharge, and when the battery impulse discharge voltage reaches discharge threshold voltage, execution in step A.
5, battery impulse fast charge method as claimed in claim 4 is characterized in that, described discharge threshold voltage is the battery discharging cut-ff voltage, and discharge threshold voltage 〉=1.00V/cell (volt/unit).
6, battery impulse fast charge method as claimed in claim 1 is characterized in that, the described impulse discharge current Ib 〉=Ia of step B.
7, battery impulse fast charge method as claimed in claim 1, it is characterized in that, described step C is specially: the operation of above A, B step is carried out in circulation, and obtain each charging interval value and/or pulse discharge time value, when the ratio of determining charging interval value or pulse discharge time value or charge and discharge time value remains unchanged, judge that storage battery has been full of electricity, the fast pulse charger process finishes.
8, battery impulse fast charge method as claimed in claim 1 is characterized in that, also comprises after the described step C: storage battery is switched to the floating charge state.
9, battery impulse fast charge method as claimed in claim 1, it is characterized in that, also comprise step: in the charge and discharge process that circulates, detect battery temp, when battery temp 〉=assigned temperature, reduce the storage battery constant current charge electric current I a in the steps A.
10, a kind of battery impulse quick charging system is characterized in that, comprising:
Constant current charge unit: be used to provide constant current that storage battery is carried out constant current charge;
Pulsed discharge unit: be used to provide pulse current that storage battery is carried out pulsed discharge;
Detect monitoring unit: the charging interval value and/or the pulse discharge time value that are used to obtain each charge and discharge operation;
Control unit: be used for situation of change, judge the charged state of storage battery, and operate according to the fast pulse charger of described charged state control storage battery according to the charge and discharge time value that gets access to.
11, battery impulse quick charging system as claimed in claim 9 is characterized in that, described detection monitoring unit also is used for detecting the charge in batteries voltage of charging process and the battery impulse discharge voltage in the discharge process;
Described control unit also is used for the comparable situation according to detected charge in batteries voltage and charge threshold voltage, and the comparable situation of detected battery impulse discharge voltage and discharge threshold voltage, control system is switched between the charge and discharge operation.
12, battery impulse quick charging system as claimed in claim 9 is characterized in that, also comprises:
Floating charge unit: be used for after the battery impulse quick charge finishes, switch by control unit storage battery is carried out floating charge.
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- 2007-03-01 CN CN2007100799847A patent/CN101051701B/en not_active Expired - Fee Related
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