CN106785132A - Charging method and device - Google Patents
Charging method and device Download PDFInfo
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- CN106785132A CN106785132A CN201611080956.2A CN201611080956A CN106785132A CN 106785132 A CN106785132 A CN 106785132A CN 201611080956 A CN201611080956 A CN 201611080956A CN 106785132 A CN106785132 A CN 106785132A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/448—End of discharge regulating measures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the present invention provides a kind of charging method and device.Charging method provided in an embodiment of the present invention, including：N number of charging stage, each charging stage includes M charging process, and N is the integer more than or equal to 2, and M is the integer more than or equal to 1；Each charging process includes：Battery is charged with constant current, is stopped when battery reaches blanking voltage；And, battery is charged with constant voltage, stop when battery reaches cut-off current；Wherein, the cut-off current that each charging process is used in i-th charging stage is less than the cut-off current that each charging process in the i+1 charging stage is used；The span of i is [1, N 1].In technical scheme, by way of adjusting cut-off current size, the polarization phenomena of battery are reduced, extend the life-span of battery.
Description
Technical field
The present invention relates to cell art, more particularly to a kind of charging method and device.
Background technology
It is more and more as the product of power resources by the use of electric energy with continuing to develop and progressive for society, for example, electronics
Equipment, electric automobile etc..The progress of technology causes the variation that the function that product possesses becomes so that power consumption is consequently increased.
Because the rated capacity of battery is fixed, so for the frequency that battery charges can also increase therewith.With battery core manufacture craft
The limitation of level, the usable cycle-index of battery is limited, and the frequency of charging increases the product where directly affecting battery
Service life.
The method for charging for battery in the prior art is electric using constant current generally using constant-current constant-voltage charging by the way of
Pond is charged until the voltage of battery reaches blanking voltage, is continued as battery using constant voltage and is charged, until battery
Voltage reach cut-off current untill.
Mode of the prior art is used for battery is charged, with increasing for charging times, the polarization phenomena of battery
Gradually serious, when causing to be charged using constant current, rate of voltage rise accelerates, and then constant-current charge duration shortens, and
When being charged using constant voltage, electric current decrease speed is slack-off, and then constant-voltage charge duration can be elongated so that battery is higher
The structural instability enhancing of core material under voltage, and then cause the capacity attenuation of battery serious, shorten the life-span of battery.
The content of the invention
The embodiment of the present invention provides a kind of charging method and device, by way of adjusting cut-off current size, reduces electricity
The polarization phenomena in pond, extend the life-span of battery.
The embodiment of the present invention provides a kind of charging method, including：N number of charging stage, each charging stage includes M charging
Process, N is the integer more than or equal to 2, and M is the integer more than or equal to 1；
Each charging process includes：
Battery is charged with constant current, is stopped when battery reaches blanking voltage；And,
Battery is charged with constant voltage, is stopped when battery reaches cut-off current；
Wherein, the cut-off current that each charging process is used in i-th charging stage is each less than in the i+1 charging stage
The cut-off current that charging process is used；The span of i is [1, N-1].
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
Each charging stage value of corresponding M is equal；Or,
Each charging stage value of corresponding M is each unequal；Or,
Each charging stage value part of corresponding M is equal.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
Also include：
Calculate default electric current adjusted value and each charging process is used in i-th charging stage cut-off current sum,
As the cut-off current that each charging process in the i+1 charging stage is used.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
The electric current adjusted value used when calculating cut-off current every time is identical；Or,
The electric current adjusted value used when calculating cut-off current every time is identical different；Or
The electric current adjustment value part used when calculating cut-off current every time is identical.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
The electric current adjusted value is equal to 0.025C.
The embodiment of the present invention also provides a kind of charging device, is applied to N number of charging stage, and each charging stage includes M times
Charging process, N is the integer more than or equal to 2, and M is the integer more than or equal to 1；
Described device includes：
First charging module, in each charging process, being charged with constant current to battery, until battery reaches
Stop to during blanking voltage；And,
Second charging module, in each charging process, being charged with constant voltage to battery, until battery reaches
Stop to during cut-off current；
Wherein, the cut-off current that each charging process is used in i-th charging stage is each less than in the i+1 charging stage
The cut-off current that charging process is used；The span of i is [1, N-1].
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
Each charging stage value of corresponding M is equal；Or,
Each charging stage value of corresponding M is each unequal；Or,
Each charging stage value part of corresponding M is equal.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
Also include：
Computing module, for calculating default electric current adjusted value and each charging process is used in i-th charging stage
Cut-off current sum, as the cut-off current that each charging process in the i+1 charging stage is used.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
The electric current adjusted value used when calculating cut-off current every time is identical；Or,
The electric current adjusted value used when calculating cut-off current every time is identical different；Or
The electric current adjustment value part used when calculating cut-off current every time is identical.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
The electric current adjusted value is equal to 0.025C.
Charging method provided in an embodiment of the present invention and device, by the way that in the different charging stages, adjustment is carried out to battery
During constant-potential charge, the size of the cut-off current of battery, with increasing for charging times, the cut-off current of battery is adjusted to
Increasing so that in constant-potential charge, the time that current reduction to cut-off current needs shortens, therefore shortens to electricity
The time that pond is charged, while the polarization phenomena of battery can also be reduced, and then the life-span of battery is extended, solved existing
The polarization phenomena of caused battery are gradually serious after repeatedly being charged to battery using changeless charging method in technology,
So that the time of constant current charge shortens, the time of constant-potential charge can be elongated, battery core material at higher voltages
Structural instability enhancing, and then cause the capacity attenuation of battery serious, shorten the problem in the life-span of battery.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of charging method embodiment one provided in an embodiment of the present invention；
Fig. 2 is charging interval in the prior art and charging current graph of a relation；
Fig. 3 is charging interval and the charging current graph of a relation of charging method embodiment provided in an embodiment of the present invention；
Fig. 4 is the flow chart of charging method embodiment two provided in an embodiment of the present invention；
Fig. 5 is the comparison diagram on cycle-index and capability retention in embodiment one；
Fig. 6 is the comparison diagram on cycle-index and capability retention in embodiment two；
Fig. 7 is the structural representation of charging device embodiment one provided in an embodiment of the present invention；
Fig. 8 is the structural representation of charging device embodiment two provided in an embodiment of the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The all other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, represent
There may be three kinds of relations, for example, A and/or B, can represent：Individualism A, while there is A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent forward-backward correlation pair as if a kind of relation of "or".
Embodiment one
Fig. 1 is the flow chart of charging method embodiment one provided in an embodiment of the present invention, as shown in figure 1, the present embodiment
Charging method, specifically may include steps of：
101st, battery is charged with constant current, is stopped when battery reaches blanking voltage.
In the embodiment of the present invention, the battery core of battery is made using different positive electrodes, negative material, due to its core material
The difference of self property, so having together decided on the performance of battery.Repeatedly charged with to battery, discharged, in battery
The chemical change that battery core occurs can be accumulated gradually.Therefore, in the case where the performance of battery is difficult to change, in order to reduce battery
The probability that the polarization phenomena of interior battery core are destroyed to core material structural stability, electricity is improved by way of adjusting cut-off current
The cycle-index in pond.
It should be noted that in embodiments of the present invention, what cycle-index was referred to be battery completely fill once with completely put once.
In embodiments of the present invention, charging process is charged or using substep by the way of constant-current constant-voltage charging to battery
(step-charge) charging modes charge to battery.
With the increase of circulating battery number of times, the material inside battery core, such as positive pole material of lithium cobalt acid can be deviate from more
Lithium ion, and then cause that the structure of core material can become unstable.Therefore, the charging method in the embodiment of the present invention, will be right
The process that battery is charged is divided into N number of charging stage, each charging stage include M charging process, N be more than or equal to
2 integer, M is the integer more than or equal to 1.
For example, the process charged to battery is divided into 5 charging stages, each charging stage charged including 50 times
Journey, then first charging stage is 1~50 charging process, and second charging stage is 51~100 charging processes, with such
Push away.
Because the core material constituent of different model battery is different, rated capacity also can be different, corresponding battery
Performance has the chemical change that difference, i.e. battery occur in charging process and can also differ.Or, model identical battery,
The chemical change that it occurs in charging process also occurs situation about differing.Therefore, during a concrete implementation,
Each charging stage value of corresponding M is equal；Or, each charging stage value of corresponding M is each unequal；Or, it is each to charge
The stage value part of corresponding M is equal.
For example, the process charged to battery is divided into 4 charging stages, each charging stage charging process number of times takes
Value is equal, and including 100 charging processes, then first charging stage is 1~100 charging process, second charging stage
It is 101~200 charging processes, by that analogy.
Again for example, the process charged to battery is divided into 4 charging stages, each charging stage charging process value
Unequal, then first charging stage is 1~100 charging process, and second charging stage charged for 101~250 times
Journey, the 3rd charging stage is 251~400 charging processes, and the 4th charging stage is 401~600 charging processes.
Again for example, the process charged to battery is divided into 4 charging stages, each charging stage charging process value
Part is equal, then first charging stage is 1~100 charging process, and second charging stage charged for 101~200 times
Journey, the 3rd charging stage is 201~400 charging processes, and the 4th charging stage is 401~600 charging processes.
Therefore, battery is charged using constant current so that the voltage of battery with the growth in charging interval by
It is cumulative to add, stop charging battery when battery reaches blanking voltage.
102nd, battery is charged with constant voltage, is stopped when battery reaches cut-off current.
Fig. 2 is charging interval in the prior art and charging current graph of a relation, and Fig. 3 is charging side provided in an embodiment of the present invention
The charging interval of method embodiment and charging current graph of a relation, as shown in Figures 2 and 3, with the increase of the cycle-index of battery, electricity
The polarization phenomena in pond gradually become strong so that during constant-current charge, and the elevated speed of voltage accelerates, therefore voltage is increased to blanking voltage
Time shorten, the electricity of corresponding battery memory storage can tail off.When continuing as battery using constant voltage and being charged, it is
Decrease polarization phenomena so that the electricity of battery can reach rated capacity, the charging interval is just when cut-off current is reached for battery
Can be progressively longer, under prolonged high voltage state, battery is easier the loss that capacity occurs to battery.Therefore, in this hair
In bright embodiment, the charging interval is shortened by the way of the cut-off current for adjusting each charging stage.
Wherein, the cut-off current that each charging process is used in i-th charging stage is each less than in the i+1 charging stage
The cut-off current that charging process is used；The span of i is [1, N-1].
It is understood that with the gradually increase of charging process number of times, the cut-off current of battery gradually increases.
For example, the process charged to battery is divided into 4 charging stages, the number of times of each charging stage charging process
Value is equal, is 100 charging processes.Then first cut-off current of charging stage is 0.001C, second charging stage
Cut-off current be 0.003C, the 3rd cut-off current of charging stage is 0.01C, and the cut-off current of the 4th charging stage is
0.01C。
During a concrete implementation, the cut-off current that each charging process is used in each charging stage both can be with
It is set in advance, or real-time calculating.
During a concrete implementation, using the charged battery of the charging method in the embodiment of the present invention, can be with
It is applied in terminal, wearable device, electric tool, portable power source, unmanned plane, electric motor car, electric automobile.
It should be noted that terminal involved in the embodiment of the present invention can include but is not limited to personal computer
(Personal Computer, PC), personal digital assistant (Personal Digital Assistant, PDA), wireless handheld
Equipment, panel computer (Tablet Computer), mobile phone, MP3 player, MP4 players etc..
It should be noted that wearable device involved in the embodiment of the present invention can include but is not limited to intelligent hand
Ring, intelligent watch, intelligent glasses, bluetooth earphone etc..
It should be noted that electric motor car involved in the embodiment of the present invention can include but is not limited to electric bicycle,
Electro-tricycle, electrodynamic balance car etc..
Charging method provided in an embodiment of the present invention, by the way that in the different charging stages, adjustment carries out constant electricity to battery
When pressure charges, the size of the cut-off current of battery, with increasing for charging times, the cut-off current of battery is adjusted to increasingly
Greatly so that in constant-potential charge, the time that current reduction to cut-off current needs shortens, therefore shortens battery is carried out
The time of charging, while the polarization phenomena of battery can also be reduced, and then the life-span of battery is extended, solved in the prior art
The polarization phenomena of caused battery are gradually serious after repeatedly being charged to battery using changeless charging method so that permanent
The time of constant-current charge shortens, and the time of constant-potential charge can be elongated, the structure of battery core material at higher voltages
Unstability strengthens, and then causes the capacity attenuation of battery serious, shortens the life-span of battery.
Embodiment two
Fig. 4 is the flow chart of charging method embodiment two provided in an embodiment of the present invention, as shown in figure 4, the present embodiment
Charging method, specifically may include steps of：
201st, battery is charged with constant current, is stopped when battery reaches blanking voltage.
The detailed process of step 201, refers to the description in step 101 in above-described embodiment one, in the embodiment of the present invention its
Principle is identical with implementation process, and here is omitted.
202nd, calculate default electric current adjusted value and each charging process is used in i-th charging stage cut-off current it
With as the cut-off current that each charging process in the i+1 charging stage is used.
It is understood that electric current adjusted value is the numerical value for adjusting cut-off current size, in embodiments of the present invention,
Cut-off current in first charging stage need not be adjusted, cut-off current in first charging stage adjustment the
Cut-off current in two charging stages, during the cut-off current in second charging stage adjusts the 3rd charging stage
Cut-off current, by that analogy.
The mode of specific adjustment is, the cut-off in cut-off current=the first charging stage in second charging stage
Electric current+electric current adjusted value, the cut-off current in the cut-off current=the second charging stage+electric current in the 3rd charging stage is adjusted
Whole value, by that analogy.
During a concrete implementation, the electric current adjusted value used when calculating cut-off current every time is identical；Or,
The electric current adjusted value used when calculating cut-off current every time is identical different；Or used when calculating cut-off current every time
Electric current adjustment value part it is identical.
For example, the process charged to battery is divided into 4 charging stages, used when calculating cut-off current every time
Electric current adjusted value is identical, is 0.01C, and first cut-off current of charging stage is 0.001C, then second charging stage
Cut-off current is 0.011C, and the 3rd cut-off current of charging stage is 0.021C, and the cut-off current of the 4th charging stage is
0.031C。
Again for example, the process charged to battery is divided into 5 charging stages, used when calculating cut-off current every time
Electric current adjusted value differ, the cut-off current of respectively 0.01C, 0.02C, 0.03C, 0.04C, the first charging stage is
0.001C, then second cut-off current of charging stage is 0.011C, and the 3rd cut-off current of charging stage is 0.031C, the
Four cut-off currents of charging stage are 0.061C, and the 5th cut-off current of charging stage is 0.101C.
Again for example, the process charged to battery is divided into 5 charging stages, used when calculating cut-off current every time
Electric current adjusted value part it is identical, respectively 0.01C, 0.02C, 0.01C, 0.02C, the first cut-off current of charging stage
It is 0.001C, then second cut-off current of charging stage is 0.011C, the 3rd cut-off current of charging stage is 0.031C,
4th cut-off current of charging stage is 0.041C, and the 5th cut-off current of charging stage is 0.061C.
During a concrete implementation, in order to realize preferable Adjustment effect, electric current adjusted value can be equal to
0.025C。
203rd, battery is charged with constant voltage, is stopped when battery reaches cut-off current.
The detailed process of step 203, refers to the description in step 102 in above-described embodiment one, in the embodiment of the present invention its
Principle is identical with implementation process, and here is omitted.
Charging method provided in an embodiment of the present invention, by the way that in the different charging stages, adjustment carries out constant electricity to battery
When pressure charges, the size of the cut-off current of each charging stage battery is calculated, then the size according to corresponding cut-off current is entered
Row constant-potential charge, with increasing for charging times, is adjusted to increasing so that in constant electricity by the cut-off current of battery
When pressure charges, the time that current reduction to cut-off current needs shortens, therefore shortens the time charged to battery, while
The polarization phenomena of battery can also be reduced, and then extends the life-span of battery, solved in the prior art using changeless
The polarization phenomena of charging method caused battery after repeatedly being charged to battery are gradually serious so that constant current charge when
Between shorten, the time of constant-potential charge can be elongated, battery at higher voltages core material structural instability enhancing, enter
And cause the capacity attenuation of battery serious, shorten the life-span of battery.
In order that goal of the invention of the invention, technical scheme and technique effect become apparent from, below in conjunction with accompanying drawing and implementation
Scheme, the present invention is described in more detail.It should be appreciated that the embodiment be given in this specification is intended merely to explain
The present invention, is not intended to limit the present invention, the embodiment the invention is not limited in being provided in specification.
Embodiment one
4 batteries of same model of selection, numbering is respectively No. 1, No. 2, No. 3 and No. 4.1~No. 4 battery is in constant-current charge
Stage is charged using identical data.In constant voltage charging phase, the cut-off current of No. 1 battery and No. 2 batteries is set to
The cut-off current of 0.025C, No. 3 batteries and No. 4 batteries is set to 0.05C.Respectively 4 batteries are carried out with 800 circulations, record
The residual capacity situation of each battery in circulating every time.
Table 1 be embodiment one in the contrast table on cut-off current and residual capacity, Fig. 5 be embodiment one on
The comparison diagram of cycle-index and capability retention, as shown in Fig. 5 and Biao 1, with the carrying out of circulation, especially cycle-index is more next
In the case of bigger, the residual capacity of battery during using larger cut-off current is surplus more than the battery of less cut-off current
Covolume amount.Be can be seen that from the data in table 1 battery is charged using the charging method in the embodiment of the present invention, can
Polarization phenomena are reduced, the residual capacity of battery is kept, and then improve the service life of battery.
Capability retention (%)=(residual capacity/initial capacity that circulation is n times) × 100%.
Table 1
Embodiment two
4 batteries of same model of selection, numbering is respectively No. 1, No. 2, No. 3 and No. 4.1~No. 4 battery is in constant-current charge
Stage is charged using identical data.In constant voltage charging phase, the cut-off current of No. 1 battery and No. 2 batteries is set to
2 batteries are carried out 800 circulations by 0.025C respectively.In being circulated at 1~100 time, No. 3 batteries and No. 4 cut-off currents of battery
0.025C is set to, in being circulated at 101~200 times, the cut-off current of No. 3 batteries and No. 4 batteries is set to 0.05C, 201~
In 300 circulations, the cut-off current of No. 3 batteries and No. 4 batteries is set to 0.075C, in being circulated at 301~400 times, No. 3 batteries
0.1C is set to the cut-off current of No. 4 batteries, by that analogy.The residual capacity situation of each battery in each circulation of record.
Table 2 be embodiment two in the contrast table on cut-off current and residual capacity, Fig. 6 be embodiment two on
The comparison diagram of cycle-index and capability retention, as shown in Fig. 6 and Biao 2, with the carrying out of circulation, especially cycle-index is more next
In the case of bigger, the residual capacity of battery during using larger cut-off current is surplus more than the battery of less cut-off current
Covolume amount.Be can be seen that from the data in table 2 battery is charged using the charging method in the embodiment of the present invention, can
Polarization phenomena are reduced, the residual capacity of battery is kept, and then improve the service life of battery.
Table 2
Embodiment three
Fig. 7 is the structural representation of charging device embodiment one provided in an embodiment of the present invention, as shown in figure 5, of the invention
The charging device of embodiment, is applied to N number of charging stage, each charging stage include M charging process, N be more than or wait
In 2 integer, M is the integer more than or equal to 1, including the first charging module 11 and the second charging module 12.
First charging module 11, in each charging process, being charged with constant current to battery, until battery
Stop when reaching blanking voltage.
Second charging module 12, in each charging process, being charged with constant voltage to battery, until battery
Stop when reaching cut-off current；
Wherein, the cut-off current that each charging process is used in i-th charging stage is each less than in the i+1 charging stage
The cut-off current that charging process is used；The span of i is [1, N-1].
During a concrete implementation, each charging stage value of corresponding M is equal；Or,
Each charging stage value of corresponding M is each unequal；Or,
Each charging stage value part of corresponding M is equal.
The device of the present embodiment, can be used for performing the technical scheme of embodiment of the method shown in Fig. 1, its realization principle and skill
Art effect is similar to, and here is omitted.
Example IV
Fig. 8 is the structural representation of charging device embodiment two provided in an embodiment of the present invention, as shown in fig. 6, of the invention
The charging device of embodiment, on the basis of embodiment three, can also include：Computing module 13.
Computing module 13 is used to calculate default electric current adjusted value and each charging process is used in i-th charging stage
Cut-off current sum, as the cut-off current that each charging process in the i+1 charging stage is used.
During a concrete implementation, the electric current adjusted value used when calculating cut-off current every time is identical；Or,
The electric current adjusted value used when calculating cut-off current every time is identical different；Or, made when calculating cut-off current every time
Electric current adjustment value part is identical.
During a concrete implementation, electric current adjusted value is equal to 0.025C.
The device of the present embodiment, can be used for performing the technical scheme of embodiment of the method shown in Fig. 2, its realization principle and skill
Art effect is similar to, and here is omitted.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be according to the actual needs selected to realize the mesh of this embodiment scheme
's.
Device embodiment described above is only schematical, wherein can be as the unit that separating component is illustrated
Or may not be physically separate, the part shown as unit can be or may not be physical location, i.e.,
A place is may be located at, or can also be distributed at least two NEs.It can according to the actual needs be selected
In some or all of module realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, you can to understand and implement.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of charging method, it is characterised in that methods described includes：N number of charging stage, each charging stage fills including M times
Electric process, N is the integer more than or equal to 2, and M is the integer more than or equal to 1；
Each charging process includes：
Battery is charged with constant current, is stopped when battery reaches blanking voltage；And,
Battery is charged with constant voltage, is stopped when battery reaches cut-off current；
Wherein, the cut-off current that each charging process is used in i-th charging stage respectively charges in being less than the i+1 charging stage
The cut-off current that process is used；The span of i is [1, N-1].
2. method according to claim 1, it is characterised in that
Each charging stage value of corresponding M is equal；Or,
Each charging stage value of corresponding M is each unequal；Or,
Each charging stage value part of corresponding M is equal.
3. method according to claim 1 and 2, it is characterised in that also include：
Default electric current adjusted value is calculated and each charging process is used in i-th charging stage cut-off current sum, to make
The cut-off current used by each charging process in the i+1 charging stage.
4. method according to claim 3, it is characterised in that
The electric current adjusted value used when calculating cut-off current every time is identical；Or,
The electric current adjusted value used when calculating cut-off current every time is identical different；Or,
The electric current adjustment value part used when calculating cut-off current every time is identical.
5. method according to claim 4, it is characterised in that the electric current adjusted value is equal to 0.025C.
6. a kind of charging device, it is characterised in that be applied to N number of charging stage, each charging stage includes M charging process, N
It is the integer more than or equal to 2, M is the integer more than or equal to 1；
Described device includes：
First charging module, in each charging process, being charged with constant current to battery, cuts until battery reaches
Only stop during voltage；
Second charging module, in each charging process, being charged with constant voltage to battery, cuts until battery reaches
Only stop during electric current；
Wherein, the cut-off current that each charging process is used in i-th charging stage respectively charges in being less than the i+1 charging stage
The cut-off current that process is used；The span of i is [1, N-1].
7. device according to claim 6, it is characterised in that
Each charging stage value of corresponding M is equal；Or,
Each charging stage value of corresponding M is each unequal；Or,
Each charging stage value part of corresponding M is equal.
8. the device according to claim 6 or 7, it is characterised in that also include：
Computing module, for the cut-off for calculating default electric current adjusted value and each charging process is used in i-th charging stage
Electric current sum, as the cut-off current that each charging process in the i+1 charging stage is used.
9. device according to claim 8, it is characterised in that
The electric current adjusted value used when calculating cut-off current every time is identical；Or,
The electric current adjusted value used when calculating cut-off current every time is identical different；Or,
The electric current adjustment value part used when calculating cut-off current every time is identical.
10. device according to claim 9, it is characterised in that the electric current adjusted value is equal to 0.025C.
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