CN103312001A - Battery-charging method and system with super capacitor for energy storage system - Google Patents
Battery-charging method and system with super capacitor for energy storage system Download PDFInfo
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- CN103312001A CN103312001A CN2013102571436A CN201310257143A CN103312001A CN 103312001 A CN103312001 A CN 103312001A CN 2013102571436 A CN2013102571436 A CN 2013102571436A CN 201310257143 A CN201310257143 A CN 201310257143A CN 103312001 A CN103312001 A CN 103312001A
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- 238000007600 charging Methods 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 67
- 238000004146 energy storage Methods 0.000 title claims abstract description 31
- 239000003990 capacitor Substances 0.000 title abstract description 14
- 238000010278 pulse charging Methods 0.000 claims abstract description 69
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims description 15
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 230000004224 protection Effects 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a battery-charging method and system with a super capacitor for an energy storage system. The battery-charging method with the super capacitor includes the steps that a main controller opens a channel for the charging of a battery, so that the battery is charged; a pulse charge controller converts a received current signal into a pulse current signal for pulse charging of the battery; when the pulse charging time reaches a first preset value, the main controller closes the channel for the charging of the battery so as to stop the battery charging; when the time for stopping the charging reaches a second preset value, the pulse charge controller opens a channel for the charging of the super capacitor, so that the super capacitor is charged through the battery; when the super capacitor is fully charged or the time for the charging of the super capacitor reaches a third preset value, a detection and control module open a channel for second recharging of the battery, so that the battery can be charged through the super capacitor. The battery-charging method and system with the super capacitor for the energy storage system has the advantages of effectively recycling electricity released by the battery, reducing entire charging time and improving cycle life of the battery.
Description
Technical field
The present invention relates to the accumulator charging technology field, be specifically related to charging method and the system of battery in a kind of energy-storage system that comprises ultracapacitor.
Background technology
The benefit that adopts the pulse current charge mode that storage battery is discharged and recharged this method has obtained a large amount of theory of industry and experimental results show that.
Existing pulse current charge mode is mainly by two kinds of patterns, a kind of is that one-period comprises pulse current charge and stops to charge two stages, another kind is that one-period comprises the positive pulse charging, negative pulse sparks and suspend three phases, whether the difference of the two is between two pulse current charges discharge pulse, wherein the second charge mode more is conducive to eliminate polarization and the salinization phenomenon that produces in the charging process, but this pattern is not still popularized.
The American scientist Maas proposes, and uses the non-linear current density curve that successively decreases to charge in batteries, can shorten the charging interval, and useful to capacity and the useful life of battery, thereby is called as the optimal charge curve.If it is that charging current is excessive that charging current has surmounted this curve, will cause to some extent battery dehydration, heating, pole plate corrosion to come off even the consequence such as pole plate distortion fracture, cell integrated blow-up and fill bad battery, be called and overcharge; If charging current less than this curve charging interval that must be longer could full charge, long-term undercharge can at this polar plate sulfation, claim to owe charging; This shows, overcharging or owe to charge all to have a strong impact on the life-span of battery.
At present, the more advanced generation that discharges and recharges pulse and control method and special-purpose integrated circuit or singlechip chip have important progress at technological layer, various hardware performances have greatly improved, comprised ultracapacitor in interior accumulator hybrid energy-storing system but be aimed at, still there is the very large space of improving in the whole charging effect of this pulse charging technique scheme in particular cases.Patent publication No. is that 101677144 " method that comprises the pulse current charge of battery in the autonomous system of ultra-capacitor " discloses the battery impulse charging method that comprises ultra-capacitor in a kind of autonomous system, this technical scheme has been added this module of ultra-capacitor, and citing document points out to comprise the stored energy blender of ultra-capacitor and micro cell, can carry out rapid charge, and the associating of ultra-capacitor and micro cell can be stored a large amount of energy, and has simultaneously high instantaneous available power.But this patent does not remark additionally to the pulse charging technique scheme on the hybrid energy-storing technology path, that is to say, charging affects the problem of battery life in this patent and the unresolved prior art.
Summary of the invention
The features and advantages of the present invention are partly statement in the following description, perhaps can describe obviously from this, perhaps can learn by putting into practice the present invention.
For overcoming the problem of prior art, the invention provides charging method and the system of battery in a kind of energy-storage system that comprises ultracapacitor, employing is discharged to ultracapacitor by battery, stop a period of time of charging again, by the technical scheme of ultracapacitor to the battery charging, with this better match optimal charge current curve, shorten the charging interval, promote the service life cycle of battery.The electric weight that the present invention utilizes ultracapacitor to absorb to discharge in the battery discharge procedure more dexterously and get up as self energy storage after, carries out secondary to battery and recharge, thereby the electricity of effectively battery being emitted has carried out reasonable recycling.
It is as follows that the present invention solves the problems of the technologies described above the technical scheme that adopts:
According to an aspect of the present invention, provide the charging method of battery in a kind of energy-storage system that comprises ultracapacitor, comprising: S1, master controller are opened to the passage of battery charging, and current signal is charged to battery via pulse charging controller; This current signal that this pulse charging controller will receive converts pulsed current signal to, and carries out pulse current charge to this battery; S2, when the time of carrying out pulse current charge reaches the first preset value, this master controller is closed this to the passage of battery charging, makes this battery stop charging; S3, when the time that stops to charge reaches the second preset value, this pulse charging controller is opened to the passage of ultracapacitor charging, this battery charges to ultracapacitor via this passage to the ultracapacitor charging; S4, when this ultracapacitor is full of electricity or reaches the 3rd preset value to time of this ultracapacitor charging, the Detection ﹠ Controling module that links to each other with this ultracapacitor is opened the passage that recharges to the battery secondary, charged to this battery to the passage that the battery secondary recharges via this by this ultracapacitor, make this battery finish secondary and recharge process.
According to one embodiment of present invention, also comprise step: battery management system module Real-Time Monitoring battery electric quantity, and this battery electric quantity fed back to this pulse charging controller, and when the electric weight of this battery less than 97% the time, repeat this step S1 to S4.
According to one embodiment of present invention, at least one in further comprising the steps of: when this battery electric quantity less than 18% the time, this pulse charging controller converts the current signal that receives to the current signal of direct current constant current, and carries out the direct current constant current charge to this battery; When this battery electric quantity was about to be full of, this pulse charging controller converted the current signal that receives to the current signal of direct current constant current, and control make voltage swing constant, carry out constant voltage charge to this battery.
According to one embodiment of present invention, carrying out the time that described secondary recharges process is the 4th preset value; Then described the first preset value be not less than described the second preset value and described the 4th preset value and.
According to one embodiment of present invention, described the first preset value equal described the second preset value, described the 3rd preset value and described the 4th preset value and; Or described the first preset value equal described the second preset value, described the 4th preset value and with described ultracapacitor be full of the required time of electricity and, wherein said the second preset value/(with described ultracapacitor be full of electricity required time+described the 4th preset value)=8/1 or 9/1.
According to one embodiment of present invention, in this step S1, when carrying out this pulse current charge, charging current is the interim non-linear mode of successively decreasing to be changed.
According to one embodiment of present invention, this is not in opening to the passage of ultracapacitor charging and this simultaneously to the passage that the battery secondary recharges.
According to one embodiment of present invention, at least one in further comprising the steps of: will comprise that the relevant information Real-time Feedback of this battery of electric weight of this battery is to this pulse charging controller, when the relevant information of this battery is unusual, this pulse charging controller feeds back to this master controller with information, and this master controller is closed this to the passage of battery charging; The relevant information Real-time Feedback of this ultracapacitor is given this pulse charging controller, and when the relevant information of this ultracapacitor was unusual, this pulse charging controller was closed this to the passage of ultracapacitor charging.
According to another aspect of the present invention, provide the charging system of battery in a kind of energy-storage system that comprises ultracapacitor, comprising: master controller, be used for opening the passage to the battery charging, current signal is charged to battery via pulse charging controller; Or close this to the passage of battery charging, make this battery stop charging; This pulse charging controller links to each other with this master controller, is used for converting the current signal that receives to pulsed current signal, and carries out pulse current charge to this battery; Also be used for opening the passage to the ultracapacitor charging; This battery also is used for charging to ultracapacitor via this passage to the ultracapacitor charging; The Detection ﹠ Controling module links to each other with this ultracapacitor, is used for opening the passage that recharges to the battery secondary; This ultracapacitor is used for charging to this battery to the passage that the battery secondary recharges via this, makes this battery finish secondary and recharges process.
According to one embodiment of present invention, also comprise battery management system module, be used for the Real-Time Monitoring battery electric quantity, and feed back to this pulse charging controller; This pulse charging controller also is used for: when this battery electric quantity less than 18% the time, the current signal that receives is converted to the current signal of direct current constant current, and carries out the direct current constant current charge to this battery; Maybe when this battery electric quantity is about to be full of, the current signal that receives is converted to the current signal of direct current constant current, and control make voltage swing constant, carry out constant voltage charge to this battery.
According to one embodiment of present invention, this Detection ﹠ Controling module also is used for the relevant information of this ultracapacitor of monitoring, and the information that monitors fed back to this pulse charging controller, when monitoring abnormal information, this Detection ﹠ Controling module also is used for starting the measure of cut-off charge protection; Also comprise battery management system module; relevant information for this battery of monitoring the electric weight that comprises this battery; and the information that monitors fed back to this pulse charging controller, when monitoring abnormal information, this battery management system module also is used for starting the measure of cut-off charge protection.
The invention provides charging method and the system of battery in a kind of energy-storage system that comprises ultracapacitor, employing is carried out pulse current charge to battery, then the technical scheme that stops to charge and by battery ultracapacitor is discharged after a period of time, with this better match optimal charge current curve, satisfy the demand that lithium battery rapidly and efficiently charges, more can shorten the charging interval, promote the service life cycle of battery.The electric weight that simultaneously the present invention adopts ultracapacitor to absorb to discharge in the lithium battery group discharge process also carries out secondary as the backward lithium battery group of the energy storage of self and recharges operation, and the electricity of effectively the lithium battery group being emitted has carried out reasonable recycling.
By reading specification, those of ordinary skills will understand feature and the content of these technical schemes better.
Description of drawings
Below by describing particularly the present invention with reference to the accompanying drawings and in conjunction with example, advantage of the present invention and implementation will be more obvious, wherein content shown in the accompanying drawing only is used for explanation of the present invention, and does not consist of the restriction of going up in all senses of the present invention, in the accompanying drawings:
Fig. 1 is the structural representation of the charging system of battery in the energy-storage system that comprises ultracapacitor of first embodiment of the invention.
Fig. 2 is the structural representation of the Detection ﹠ Controling module of the embodiment of the invention.
Fig. 3 is the structural representation of the pulse charging controller of the embodiment of the invention.
Fig. 4 is the structural representation of the charging system of battery in the energy-storage system that comprises ultracapacitor of second embodiment of the invention.
Fig. 5 is the schematic flow sheet of the charging method of battery in the energy-storage system that comprises ultracapacitor of the embodiment of the invention.
Embodiment
As shown in Figure 1, the invention provides the charging system of battery in a kind of energy-storage system that comprises ultracapacitor, comprising: master controller 20, be used for opening the passage 91 to the battery charging, current signal is charged to battery 41 via pulse charging controller 30; Or close this to the passage 91 of battery charging, make this battery 41 stop charging; Pulse charging controller 30 links to each other with this master controller 20, is used for converting the current signal that receives to pulsed current signal, and carries out pulse current charge to this battery 41; Also be used for opening the passage 92 to the ultracapacitor charging; This battery 41 also is used for charging to ultracapacitor 52 via this passage 92 to the ultracapacitor charging; Detection ﹠ Controling module 51 links to each other with this ultracapacitor 52, is used for opening the passage 93 that recharges to the battery secondary; This ultracapacitor 52 is used for charging to this battery 41 to the passage 93 that the battery secondary recharges via this, makes this battery finish secondary and recharges process.
This Detection ﹠ Controling module 51 also is used for the relevant information of this ultracapacitor 52 of monitoring, and the information that monitors is fed back to this pulse charging controller 30.Referring again to Fig. 2, Fig. 2 is the structural representation of the Detection ﹠ Controling module of the embodiment of the invention.In the present embodiment, this Detection ﹠ Controling module 51 comprises microprocessor 511, arithmetic and control unit 512 and the Mersure Controler 513 that links to each other successively, wherein this Mersure Controler 513 also links to each other with voltage detecting transducer 514, current detection sensor 515, temperature detection sensor 516 and fault message detection controller 517, and collects the information that those transducers detect.When charging to ultracapacitor 52, microprocessor 511 is responsible for access and the disconnection of electricity as master control; Voltage detecting transducer 514 detects the ultracapacitor both end voltage in real time, after this Mersure Controler 513 receives this magnitude of voltage, send it to arithmetic and control unit 512, arithmetic and control unit 512 calculates this ultracapacitor 52 remaining capacity SOC according to this magnitude of voltage, and carries out ultracapacitor SOC by microprocessor 511 and proofread and correct; Current detection sensor 515 and temperature detection sensor 516 are used for electric current, the temperature correlation information of Real-time Obtaining ultracapacitor 52; Fault message detects 517 of controllers and is used for the real time information that obtains according to current detection sensor 515 and temperature detection sensor 516, carries out judgement and the feedback of dependent failure information and normal information.
When occurring that overcharging appears in ultracapacitor 52 or during the abnormal conditions such as excess Temperature; Detection ﹠ Controling module 51 also is used for starting the measure such as cut-off charge protections such as giving the alarm; feed back to simultaneously pulse charging controller 30; it is closed to the passage 92 of ultracapacitor charging, to avoid hazard event.
Please refer to Fig. 3, Fig. 3 is the structural representation of the pulse charging controller of the embodiment of the invention.Pulse charging controller 31 among the present invention can be controlled to the discharging and recharging and terminal procedure of battery, and regulates the size of electric current in this process and generate specific pulse charging current waveform.This controller is mainly by insulated gate bipolar transistor 303(Insulated Gate Bipolar Transistor, IGBT), signal controlling module 302 and microprocessor 301 etc. form.When charging to battery 41, microprocessor 301 is as master control, be responsible for access and the disconnection of electricity, signal controlling module 302 drives insulated gate bipolar transistor 303 and produces specific pulsed current signal, in producing specific pulsed current signal process, it in fact also is the size of regulating current signal in this process.Microprocessor 301 also is used for carrying out communicating by letter of related feedback information with master controller 20, after master controller 20 obtains feedback information, closes or opens to the passage 91 of battery charging.
Referring again to Fig. 4, be the structural representation of the charging system of battery in the energy-storage system that comprises ultracapacitor of second embodiment of the invention.Different from the charging system of battery in the energy-storage system that comprises ultracapacitor of first embodiment of the invention is, in the present embodiment, also comprise electric energy input 10 and electric energy output 60, wherein, it is battery 41 or ultracapacitor 52 chargings that this electric energy input 10 is used for output current signal, and the present invention does not do restriction to the form of electric energy input and electric energy output.
In addition, in the present embodiment, this charging system that comprises battery in the energy-storage system of ultracapacitor also comprises the battery management system module 42 that links to each other with battery 41 and pulse charging controller 30, this battery management system 42 is used for the Real-Time Monitoring battery electric quantity, and feed back to this pulse charging controller, this pulse charging controller 31 also is used for: when this battery electric quantity less than 18% the time, the current signal that receives is converted to the current signal of direct current constant current, and carry out the direct current constant current charge to this battery; Maybe when this battery electric quantity is about to be full of, the current signal that receives is converted to the current signal of direct current constant current, and control make voltage swing constant, carry out constant voltage charge to this battery.In the present embodiment, when this battery electric quantity reaches 93%～97%, namely be in the state that is about to be full of.
Except battery electric quantity, this battery management system 42 also can be used for monitoring other relevant information of this battery, such as the electric weight of this battery, electric current, temperature etc.,
When monitoring abnormal information; this battery management system module 42 also is used for starting the measure such as cut-off charge protections such as giving the alarm; feed back to simultaneously pulse charging controller 30; then pulse charging controller 30 feeds back to master controller 20 with this information; it is closed to the passage 91 of battery charging, to avoid hazard event.
As shown in Figure 5, the present invention also provides the charging method of battery in a kind of energy-storage system that comprises ultracapacitor, comprising: S1, master controller 20 are opened to the passage 91 of battery charging, and current signal is charged to battery via pulse charging controller 30; This current signal that pulse charging controller 20 will receive converts pulsed current signal to, and carries out pulse current charge to battery 41; S2, when the time of carrying out pulse current charge reaches the first preset value, master controller 20 is closed this to the passage of battery charging, makes battery 41 stop charging; S3, when the time that stops to charge reaches the second preset value, pulse charging controller 30 is opened to the passage 92 of ultracapacitor charging, this battery 41 charges to ultracapacitor 52 via this passage 92 to the ultracapacitor charging; S4, when ultracapacitor 52 is full of electricity or reaches the 3rd preset value to time of ultracapacitor 52 charging, the Detection ﹠ Controling module 51 that links to each other with this ultracapacitor is opened the passage 93 that recharges to the battery secondary, charged to battery 41 via the passage 93 that recharges to the battery secondary by this ultracapacitor 52, make this battery 41 finish secondary and recharge process.
In this step S1, passage 91 to the battery charging is in opening, should then all be in closed condition to the passage 92 of ultracapacitor charging and to the passage 93 that the battery secondary recharges, and this pulse charging controller 30 is when carrying out pulse current charge to battery 41, the size of its charging current is the interim non-linear mode of successively decreasing and changes, be used for match optimal charge current curve, for example with 2C as the initiation of charge electric current, until charging current is down to 0.05C, the time that this process continues is the first preset value.
In this step S2, master controller 20 has been closed to the passage 91 of battery charging, and at this moment, this also all is in closed condition to the passage 92 of ultracapacitor charging and to the passage 93 that the battery secondary recharges, and the time that this process continues is the second preset value.
In this step S3, pulse charging controller 30 has been opened to the passage 92 of ultracapacitor charging, and at this moment, this all is in closed condition to the passage 91 of battery charging and to the passage 93 that the battery secondary recharges.In this step, consisted of the charge circuit of ultracapacitor by pulse charging controller 30, battery 41, Detection ﹠ Controling module 51, ultracapacitor 52, current signal is flowed out by battery 41 and charges to ultracapacitor 52 via pulse charging controller 30, Detection ﹠ Controling module 51, although this moment, described battery was shorter 41 discharge times, but generally also be enough to satisfy ultracapacitor 52 is full of electricity, said process also can be described as the process of negative pulse discharge.
In step S4, after Detection ﹠ Controling module 51 monitors ultracapacitor 52 and is full of, sent by Detection ﹠ Controling module 51 and to feed back to pulse charging controller 30, pulse charging controller 30 is closed to the passage 92 of ultracapacitor charging.Time to ultracapacitor 52 chargings can certainly be set as the 3rd preset value, when the time to ultracapacitor 52 chargings reached the 3rd preset value, pulse charging controller 30 was just closed to the passage 92 of ultracapacitor charging.Simultaneously, Detection ﹠ Controling module 51 is opened the passage 93 that recharges to the battery secondary, this moment, this ultracapacitor 52 charged to battery 41 via the passage 93 that recharges to the battery secondary, this moment, charging current can be that size is the dc current signal of 0.05C, made this battery 41 finish secondary and recharged process.
This shows, this passage 92 to the ultracapacitor charging is can not be in simultaneously opening with the passage 93 that recharges to the battery secondary, and only have when this is in opening to the passage 92 of ultracapacitor charging or to the passage 93 that the battery secondary recharges, Detection ﹠ Controling module 51 is just in running order.
Need to prove, be the 4th preset value if carry out the time that this secondary recharges process; Then this first preset value be not less than this second preset value and the 4th preset value and.In the present embodiment, the first preset value=the second preset value+the 4th preset value+required time of negative pulse discharge process, wherein the required time of this negative pulse discharge process is exactly the 3rd preset value or ultracapacitor 52 is full of required time of electricity, in above-mentioned equation, the second preset value/(the 4th preset value+required time of negative pulse discharge process)=8/1 or 9/1.
In the present embodiment, also comprise step: battery management system module Real-Time Monitoring battery electric quantity, and this battery electric quantity fed back to this pulse charging controller, and when the electric weight of this battery less than 97% the time, repeat this step S2 to S5.Or rather, when the electric weight of this battery greater than 12% and less than 97% the time, repeat this step S2 to S5, when the electric weight of this battery greater than 15% and then better less than 95% the time.This shows, in the present embodiment, step S2 to S5 when the electric weight of this battery is in certain scope, need to repeatedly repeat this charge cycle as a charge cycle, and the present invention does not do restriction to the number of this charge cycle.
In the present invention, battery management system module 42 will comprise that the relevant information Real-time Feedback of this battery of electric weight of this battery is to pulse charging controller 30, this pulse charging controller 30 is divided into 3 stages according to the electric weight of this battery with whole charging process, and adopts different current signals in these 3 stages.Specifically, when the electric weight of battery be to be the phase I less than 15% the time; When the electric weight of battery is 15% to 95%, it is second stage; When the electric weight of battery is the phase III greater than 95% the time.The division of the electric weight of certain above-mentioned battery is not absolute, and the battery electric quantity in the above-mentioned phase I can be selected from the arbitrary value in 12% to 18%; And the battery electric quantity in the above-mentioned phase III can be selected from the arbitrary value in 93% to 97%.
On step, the above-mentioned phase I is in before this step S1, when this stage, passage 91 to the battery charging is in opening, should then all be in closed condition to the passage 92 of ultracapacitor charging and to the passage 93 that the battery secondary recharges, at this moment, this pulse charging controller 30 converts the current signal that receives to the current signal of direct current constant current, and carries out the direct current constant current charge to this battery; This dc current signal size in the present embodiment, is chosen the current signal of the direct current constant current of 0.05C between 0.02C to 0.08C.In whole charging process, the parameter information that battery management system module 42 Real-Time Monitoring battery 41 such as voltages, electric weight, electric current, temperature etc. are relevant, until battery 41 information about power are when reaching 15%, battery management system 42 feeds back signal to arteries and veins charge controller 30, pulse charging controller 30 feeds back signal to master controller 20 again, finish this stage charging process, enter second stage.Although in the present embodiment, what choose is that battery 41 electric weight reach 15%, and selectable battery electric quantity that should the stage can be the arbitrary value in 12% to 18%.Adopt this constant current method can be disposable fast to battery 41 chargings in the charging starting stage, and the parameter configuration of whole process all satisfies the current/voltage scope that battery can receive, have preferably effect.
When second stage, this charging process repeats exactly this step S1 to S4 until battery electric quantity reaches 95%, although in the present embodiment, what choose is that battery 41 information about power reach 95%, and selectable battery electric quantity that should the stage can be the arbitrary value in 93% to 97%.This stage is satisfied battery normal rapidly and efficiently demand, the especially lithium ion battery of charging by the process that constantly is cycled to repeat pulse current charge, stops to charge, negative pulse discharge and secondary recharge, can also match optimal charge current curve.Simultaneously ultracapacitor 52 has absorbed the electric weight that discharges in battery 41 discharge processes and as self energy storage, the most backward battery 41 carries out secondary and recharges operation, the electricity of effectively battery 41 being emitted has carried out reasonable recycling, reduced the whole charging interval, slow down the decay of battery capacity, promoted the service life cycle of battery.
On step, the above-mentioned phase III is in after the step S4, when this stage, passage 91 to the battery charging is in opening, should then all be in closed condition to the passage 92 of ultracapacitor charging and to the passage 93 that the battery secondary recharges, at this moment, this pulse charging controller 30 converts the current signal that receives to the current signal of direct current constant current, and control makes voltage swing constant, carry out constant voltage charge to this battery, wherein, the magnitude range of this current signal is between 0.01C to 0.03C, for example be 0.02C, this voltage swing then is controlled at 4.25V.In the charging process of all stage, the information about power of battery management system module 42 Real-Time Monitoring batteries 41, until the monomer battery voltage in the battery 4 reaches 4.2V, battery management system module 42 feeds back signal to arteries and veins charge controller 30, pulse charging controller 30 feeds back signal to master controller 20 again, finishes this stage charging process, so just finishes the charging process of whole battery 41, master controller 20 can be controlled outage voluntarily, i.e. disconnection is connected with electric energy input 10.It is preferred value that monomer battery voltage electric weight in the above-mentioned battery 41 reaches 4.2V, and optional scope is between the 4.15V to 4.25V.Constant voltage charge is all to press floating charge in order to allow each monomer battery voltage all reach described magnitude of voltage, to be called.Because this stage battery electric quantity is about to be full of, traditional method is difficult to charge to battery again, can charge the battery as tricklet gradually by this method, allow the electric weight convergence 100% of trying one's best, monomer battery voltage reach as far as possible 4.2V and more than.
Battery 41 among the present invention comprises lithium battery group and the battery that has the other types of similar quality with lithium battery.
In order to improve the fail safe of charging, at least one item during the present invention is further comprising the steps of:
The relevant information Real-time Feedback of this battery that will comprise the electric weight of this battery is given this pulse charging controller 30, when the relevant information of this battery is unusual, such as overcharge, excess Temperature, electric current are excessive etc., this pulse charging controller 30 feeds back to master controller 20 with information, master controller 20 is just closed this to the passage 91 of battery charging, stop to charge to battery 41, to avoid hazard event.
With the relevant information Real-time Feedback of ultracapacitor 52 to pulse charging controller 30, when the relevant information of this ultracapacitor 52 is unusual, such as overcharging or excess Temperature etc., this pulse charging controller 30 is closed to the passage 92 of ultracapacitor charging, stop to charge to super electrical equipment 52, to avoid hazard event.
The invention provides charging method and the system of battery in a kind of energy-storage system that comprises ultracapacitor, according to the electric weight of battery whole charging process is divided into 3 stages, and in these 3 stages, adopts different current signals.When the phase I, the present invention takes that the direct current constant current is disposable charges to battery fast; When second stage, the present invention with pulse current charge, stop charging, negative pulse discharge charges in proper order as one-period, and when the phase III, takes the method for dc constant voltage charging, allows the electric weight convergence 100% of trying one's best.Adopt charging process of the present invention, especially better match optimal charge of the charging method curve of second stage satisfies the demand that lithium battery rapidly and efficiently charges, and promotes the service life cycle of battery; The electricity that simultaneously the present invention effectively emits the lithium battery group has carried out reasonable recycling.The present invention further utilizes battery management system module and Detection ﹠ Controling module to promote the security performance of whole system.
Above with reference to the accompanying drawings of the preferred embodiments of the present invention, those skilled in the art do not depart from the scope and spirit of the present invention, and can have multiple flexible program to realize the present invention.For example, the feature that illustrates or describe as the part of an embodiment can be used for another embodiment to obtain another embodiment.Below only for the better feasible embodiment of the present invention, be not so limit to interest field of the present invention, the equivalence that all utilizations specification of the present invention and accompanying drawing content are done changes, and all is contained within the interest field of the present invention.
Claims (10)
1. the charging method of battery in the energy-storage system that comprises ultracapacitor is characterized in that, comprising:
S1, master controller are opened to the passage of battery charging, and current signal is charged to battery via pulse charging controller; The described current signal that described pulse charging controller will receive converts pulsed current signal to, and carries out pulse current charge to described battery;
S2, when the time of carrying out pulse current charge reaches the first preset value, described master controller is closed described passage to battery charging, makes described battery stop charging;
S3, when the time that stops to charge reaches the second preset value, described pulse charging controller is opened to the passage of ultracapacitor charging, described battery charges to ultracapacitor via described passage to the ultracapacitor charging;
S4, when described ultracapacitor is full of electricity or reaches the 3rd preset value to time of described ultracapacitor charging, the Detection ﹠ Controling module that links to each other with described ultracapacitor is opened the passage that recharges to the battery secondary, charged to described battery via the described passage that recharges to the battery secondary by described ultracapacitor, make described battery finish secondary and recharge process.
2. the charging method of battery in the energy-storage system that comprises ultracapacitor according to claim 1, it is characterized in that, also comprise step: battery management system module Real-Time Monitoring battery electric quantity, and described battery electric quantity fed back to described pulse charging controller, and when described battery electric quantity less than 97% the time, repeating said steps S1 to S4.
3. the charging method of battery in the energy-storage system that comprises ultracapacitor according to claim 2 is characterized in that, in further comprising the steps of at least one:
When described battery electric quantity less than 18% the time, described pulse charging controller converts the current signal that receives to the current signal of direct current constant current, and carries out the direct current constant current charge to described battery;
When described battery electric quantity was about to be full of, described pulse charging controller converted the current signal that receives to the current signal of direct current constant current, and control make voltage swing constant, carry out constant voltage charge to described battery.
4. the pulse charge method of battery in the energy-storage system that comprises ultracapacitor according to claim 1 is characterized in that, carrying out the time that described secondary recharges process is the 4th preset value; Then described the first preset value be not less than described the second preset value and described the 4th preset value and.
5. the pulse charge method of battery in the energy-storage system that comprises ultracapacitor according to claim 4 is characterized in that, described the first preset value equal described the second preset value, described the 3rd preset value and described the 4th preset value and; Or
Described the first preset value equal described the second preset value, described the 4th preset value and with described ultracapacitor be full of the required time of electricity and, wherein said the second preset value/(with described ultracapacitor be full of electricity required time+described the 4th preset value)=8/1 or 9/1.
6. the charging method of battery in the energy-storage system that comprises ultracapacitor according to claim 1 is characterized in that, in described step S1, when carrying out described pulse current charge, charging current is the interim non-linear mode of successively decreasing to be changed.
7. the charging method of battery in the energy-storage system that comprises ultracapacitor according to claim 1 is characterized in that, described passage and the described passage that recharges to the battery secondary to the ultracapacitor charging is not in opening simultaneously.
8. the charging method of battery in the energy-storage system that comprises ultracapacitor according to claim 1 is characterized in that, in further comprising the steps of at least one:
The relevant information Real-time Feedback of described battery that will comprise the electric weight of described battery is given described pulse charging controller, when the relevant information of described battery is unusual, described pulse charging controller feeds back to described master controller with information, and described master controller is closed described passage to the battery charging;
The relevant information Real-time Feedback of described ultracapacitor is given described pulse charging controller, and when the relevant information of described ultracapacitor was unusual, described pulse charging controller was closed described passage to the ultracapacitor charging.
9. the charging system of battery in the energy-storage system that comprises ultracapacitor is characterized in that, comprising:
Master controller is used for opening the passage to the battery charging, and current signal is charged to battery via pulse charging controller; Or close described passage to the battery charging, make described battery stop charging;
Described pulse charging controller links to each other with described master controller, is used for converting the current signal that receives to pulsed current signal, and carries out pulse current charge to described battery; Also be used for opening the passage to the ultracapacitor charging;
Described battery also is used for charging to ultracapacitor via described passage to the ultracapacitor charging;
The Detection ﹠ Controling module links to each other with described ultracapacitor, is used for opening the passage that recharges to the battery secondary;
Described ultracapacitor is used for charging to described battery via the described passage that recharges to the battery secondary, makes described battery finish secondary and recharges process.
10. the pulse current charge system of battery in the energy-storage system that comprises ultracapacitor according to claim 9 is characterized in that, also comprises battery management system module, is used for the Real-Time Monitoring battery electric quantity, and feeds back to described pulse charging controller; Described pulse charging controller also is used for:
When described battery electric quantity less than 18% the time, the current signal that receives is converted to the current signal of direct current constant current, and carries out the direct current constant current charge to described battery; Or
When described battery electric quantity is about to be full of, the current signal that receives is converted to the current signal of direct current constant current, and control make voltage swing constant, carry out constant voltage charge to described battery.
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