CN106532160A - Battery charging method and device - Google Patents
Battery charging method and device Download PDFInfo
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- CN106532160A CN106532160A CN201611249446.3A CN201611249446A CN106532160A CN 106532160 A CN106532160 A CN 106532160A CN 201611249446 A CN201611249446 A CN 201611249446A CN 106532160 A CN106532160 A CN 106532160A
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- battery
- charging
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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
- 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
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention provides a battery charging method and device. The battery charging method provided by the embodiment of the invention comprises the steps of carrying out pulse charging on a battery at least twice and stopping pulse charging on the battery until voltage of the battery reaches a voltage threshold; and carrying out constant-voltage charging on the battery and stopping constant-voltage charging on the battery until current of the battery reaches cutoff current, wherein each pulse charging process includes the steps of carrying out constant-current charging on the battery by using first constant current; carrying out constant-current charging on the battery by using second constant current; and standing the battery. According to the battery charging method and device, battery standing is carried out in each pulse charging process, so that the polarization phenomenon of the battery in each charging process can be eliminated, the security of the battery is improved, the cycle life of the battery is prolonged, a discharging process is avoided in each pulse charging process and the charging time is shortened to improve the charging rate.
Description
Technical field
The present invention relates to cell art, more particularly to a kind of method for charging batteries and device.
Background technology
With the continuous lifting of modern science and technology technology, people for the dependency degree more and more higher of terminal, as carrying for terminal
For the battery of electric energy, its how to strengthen endurance with and improve charging rate the problems such as be increasingly taken seriously.
For the charging of battery, modal charging method of the prior art is：It is first straight with constant current charge
Certain voltage is reached to battery, then be charged with constant voltage until reaching charging to cut-off current.Using this
Mode is charged, to improve charging rate, it is necessary to adopt larger constant current to be charged for battery, anode potential
Due to larger ohmic polarization and concentration polarization, will fall rapidly upon, lithium ion will be caused lithium metal to be reduced in anode surface,
This will cause great security risk to lithium battery, and promote battery capacity to decay rapidly.
Therefore, charging method of the prior art is adopted to be charged for battery, charging rate is slower, if changing existing skill
Charge parameter in the charging method of art come realize improve charging rate, then safety coefficient is relatively low.
To improve charging rate, security risk can be brought again.
The content of the invention
The embodiment of the present invention provides a kind of method for charging batteries and device, to improve while charging rate, has ensured electricity
The security in pond and improve cycle life.
The embodiment of the present invention provides a kind of charging method, including：
Pulse charge at least twice is carried out to the battery, when the voltage of the battery reaches voltage threshold, is stopped
Pulse charge is carried out to the battery；And, constant-voltage charge is carried out to the battery, until the electric current of the battery reaches cut-off
During electric current, stopping carries out constant-voltage charge to the battery；
Wherein, the pulse charge includes every time：
Constant-current charge is carried out to the battery using the first constant current；
Constant-current charge is carried out to the battery using the second constant current；
Stand the battery.
Further, in said method, first constant current used by each pulse charge is identical, and often
First constant current used by the secondary pulse charge is more than or equal to 0.2C, and is less than or equal to 3C.
Further, in said method, in each pulse charge, first constant current for using is filled
The charging duration used when electric is identical, and the charging duration is more than or equal to 0.1s, and is less than or equal to 30s.
Further, in said method, second constant current used by each pulse charge is identical, and often
Second constant current used by the secondary pulse charge is more than or equal to 0.01C, and is less than or equal to 1.5C.
Further, in said method, in each pulse charge stage, filled using second constant current
The charging duration used when electric is identical, and the charging duration is more than or equal to 0.01s, and is less than or equal to 10s.
Further, in said method, in each pulse charge stage, using the duration for standing the battery
It is identical, and the standing duration is more than or equal to 0.01s, and it is less than or equal to 10s.
Further, in said method, environment temperature of the battery in charging process is more than or equal to 0 DEG C, and
Less than or equal to 60 DEG C.
Further, in said method, methods described be applied to battery charger, battery adapter, battery control circuit,
Or in chip.
Further, in said method, the battery applications in terminal, wearable device, electric tool, portable power source,
In unmanned plane, electric motor car or electric automobile.
The embodiment of the present invention also provides a kind of battery charger, including：
Pulse charge unit, for carrying out pulse charge at least twice to the battery, until the voltage of the battery reaches
During to voltage threshold, stopping carries out pulse charge to the battery；
Constant-voltage charge unit, for carrying out constant-voltage charge to the battery, until the electric current of the battery reaches cut-off electricity
During stream, stopping carries out constant-voltage charge to the battery；
Wherein, the pulse charge includes every time：
Constant-current charge is carried out to the battery using the first constant current；
Constant-current charge is carried out to the battery using the second constant current；
Stand the battery.
Further, said apparatus are applied in battery charger, battery adapter, battery control circuit or chip.
Method for charging batteries provided in an embodiment of the present invention and device, when the voltage of battery is not up to voltage threshold, lead to
Cross and battery is charged using the mode of pulse charge, include during each pulse charge, using the first constant electricity
Stream carries out constant-current charge, carries out constant-current charge, resting batteries to battery using the second constant current to battery, and battery is being carried out
At least twice after pulse charge, stop carrying out pulse charge to battery when the voltage of battery reaches voltage threshold, then to battery
Constant-voltage charge is carried out, when the electric current of battery reaches cut-off current, stopping carries out constant-voltage charge to battery, in the skill of the present invention
In art scheme, during each pulse charge can resting batteries, such that it is able to eliminate the pole that battery is produced in charging process
Change phenomenon, therefore the security and cycle life of battery are improve, and during pulse charge, no discharge process, contracting
The short charging interval, and then improve charging rate.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are these
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 method for charging batteries embodiment provided in an embodiment of the present invention；
Fig. 2 is electric current-charging interval graph of a relation in method for charging batteries provided in an embodiment of the present invention；
Fig. 3 is the current-vs-time graph of a relation of contrast scheme one and embodiment one；
Fig. 4 is the voltage-vs-time graph of a relation of contrast scheme one and embodiment one；
Fig. 5 is the charging interval-battery current percentage relation figure of contrast scheme one and embodiment one；
Fig. 6 is the capability retention-cycle-index graph of a relation of contrast scheme four and embodiment four；
Fig. 7 is the structural representation of battery charger embodiment provided in an embodiment of the present invention.
Specific embodiment
To make purpose, technical scheme and the 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
The a part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Pulse charge method of the prior art, it has been disclosed that be to be charged using the first electric current, then using second
Electric current is discharged, and is reused the first electric current and is charged, and the endless form discharged by the second electric current is charged to battery,
The process that anode material graphite in battery will complete repeatedly quick embedded lithium ion, depart from lithium ion, this will be to anode graphite
Structure causes a certain degree of destruction, so as to affect to the security and cycle life of battery core.And, use
After one electric current is charged, in addition it is also necessary to discharged using the second electric current so that the charging interval is elongated, charging rate is slower.Cause
This, provides in embodiments of the present invention and a kind of not only can ensure that battery security and cycle life but also can improve charging rate
Method for charging batteries.
Embodiment one
Fig. 1 is the flow chart of method for charging batteries embodiment provided in an embodiment of the present invention, as shown in figure 1, the present invention is real
The method for charging batteries of example offer is provided, specifically be may include steps of：
101st, pulse charge at least twice is carried out to battery, when the voltage of battery reaches voltage threshold, is stopped to electricity
Pond carries out pulse charge.
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.In the case where the performance of battery is difficult to change, by reducing
The mode in charging interval is improving the charging rate of battery.Therefore, in embodiments of the present invention, using the mode of pulse charge it is
Battery is charged.
Under normal circumstances, the electricity of battery is when the battery capacity upper limit is not reaching to, and also needs to ensure the safety of battery
Property, it is required to pulse charge at least twice and just cell voltage can be reached voltage threshold.It should be noted that of the invention real
Apply in example, voltage threshold is set according to the self-characteristic of the different battery of different model battery or composition material.
In to battery charging process, with the rising of voltage, the battery core in battery can occur different degrees of chemistry change
Change.With being repeatedly charged to battery, discharging, the chemical change that the battery core in battery occurs gradually can be accumulated.Therefore, it is
The probability that the battery core in battery occurs polarization phenomena is reduced, in embodiments of the present invention, the circulation to each pulse charge is walked
Suddenly improved.
Wherein, each pulse charge includes：
Constant-current charge is carried out to battery using the first constant current；
Constant-current charge is carried out to battery using the second constant current；
Resting batteries.
Fig. 2 is electric current-charging interval graph of a relation in method for charging batteries provided in an embodiment of the present invention, as shown in Fig. 2 its
In, the first constant current is I1, and the second constant current is I2, a length of T3 during standing, specifically, using the first constant current to electricity
When pond carries out constant-current charge, the electric current for using is bigger than the second constant current, is filled by carrying out constant current using larger constant current
Electricity, can cause the dump energy of battery quickly to increase, and constant-current charge is carried out to battery using the second constant current then, adopt
The less electric current of electric current carries out constant-current charge, can alleviate the polarization phenomena caused due to the first constant current, so as to alleviate anode
The speed that current potential is reduced, and the residual current of battery still can increase, and can further eliminate polarization finally by resting batteries,
Reduce analysis lithium risk, and the phenomenon for making the embedding lithium of positive electrode graphite in the battery core in battery and expanding obtains certain slow
Solution.
It is understood that every time pulse charge is one cycle, due to the time of each pulse charge setting it is shorter, because
, when only pulsatile once charges, the voltage of battery is extremely difficult to voltage threshold for this, therefore after circulating at least twice, Zhi Dao electricity
When the voltage in pond reaches voltage threshold, stop carrying out pulse charge for battery.
102nd, constant-voltage charge is carried out to battery, when the electric current of battery reaches cut-off current, stopping carries out perseverance to battery
Pressure charges.
In embodiments of the present invention, after pulse charge is carried out to battery, start to carry out constant-voltage charge to battery, to electricity
During pond carries out constant-voltage charge, as the electricity of battery gradually increases, charging current will be gradually reduced, therefore concentration polarization
And ohmic polarization will also be gradually reduced, anode potential will also be gradually increasing, and when the electric current of battery reaches cut-off current, stop
Constant-voltage charge is carried out to battery.
It should be noted that the voltage value used during constant-voltage charge mentioned in the embodiment of the present invention and cut-off
Current values, according to constructions different in practical application, the battery of different model is set respectively, and here is not done specifically
Limit.
In order to preferably play the effect of the method for charging batteries of the present invention, the first used charging of each subpulse charging
Electric current is identical, and the first charging current that pulse charge is used every time is more than or equal to 0.2C, and is less than or equal to 3C.
During a concrete implementation, the first charging current that each pulse charge is used is more than or equal to
0.5C, and it is less than or equal to 2.8C；Or, the first charging current that each pulse charge is used is more than or equal to
0.5C, and it is less than or equal to 2.5C；Or, the first charging current that each pulse charge is used is more than or equal to
0.5C, and it is less than or equal to 2.0C；Or, the first charging current that each pulse charge is used is more than or equal to
0.7C, and it is less than or equal to 2.8C；Or, the first charging current that each pulse charge is used is more than or equal to
0.7C, and it is less than or equal to 2.5C；Or, the first charging current that each pulse charge is used is more than or equal to
0.7C, and it is less than or equal to 2.0C；Or, the first charging current that each pulse charge is used is more than or equal to
1.0C, and it is less than or equal to 2.8C；Or, the first charging current that each pulse charge is used is more than or equal to
1.0C, and it is less than or equal to 2.5C；Or, the first charging current that each pulse charge is used is more than or equal to
1.0C, and it is less than or equal to 2.0C；Or, the first charging current that each pulse charge is used is more than or equal to
1.2C, and it is less than or equal to 2.8C；Or, the first charging current that each pulse charge is used is more than or equal to
1.2C, and it is less than or equal to 2.5C；Or, the first charging current that each pulse charge is used is more than or equal to
1.2C, and it is less than or equal to 2.0C；Or, the first charging current that each pulse charge is used is more than or equal to
1.5C, and it is less than or equal to 2.8C；Or, the first charging current that each pulse charge is used is more than or equal to
1.5C, and it is less than or equal to 2.5C；Or, the first charging current that each pulse charge is used is more than or equal to
1.5C, and it is less than or equal to 2.0C.
In order to preferably play the effect of the method for charging batteries of the present invention, in each subpulse charges, first for using
The charging duration used when constant current is charged is identical, and the charging duration be more than or equal to 0.1s, and be less than or
Person is equal to 30s.
During a concrete implementation, the first charging duration that each pulse charge is used is more than or equal to
0.2s, and it is less than or equal to 25s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.2s,
And it is less than or equal to 20s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.2s, and little
In or be equal to 15s；Or, the first charging duration that each pulse charge is used be more than or equal to 0.5s, and be less than or
Person is equal to 25s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.5s, and is less than or waits
In 20s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.5s, and is less than or equal to
15s；Or, the first charging duration that each pulse charge is used is more than or equal to 1s, and is less than or equal to 25s；Or
Person, the first charging duration that each pulse charge is used are more than or equal to 1s, and are less than or equal to 20s；Or, every time
The first charging duration that pulse charge is used is more than or equal to 1s, and is less than or equal to 15s；Or, fill per subpulse
The first charging duration that electricity is used is more than or equal to 2s, and is less than or equal to 25s；Or, each pulse charge is made
First charging duration is more than or equal to 2s, and is less than or equal to 20s；Or, each pulse charge used
One charging duration is more than or equal to 2s, and is less than or equal to 15s；Or, the first charging that each pulse charge is used
Duration is more than or equal to 5s, and is less than or equal to 25s；Or, grow up during the first charging that each pulse charge is used
In or be equal to 5s, and be less than or equal to 20s；Or, the first charging duration that each pulse charge is used be more than or
Equal to 5s, and it is less than or equal to 15s；Or, the first charging duration that each pulse charge is used is more than or equal to
10s, and it is less than or equal to 25s；Or, the first charging duration that each pulse charge is used is more than or equal to 10s, and
Less than or equal to 20s；Or, the first charging duration that each pulse charge is used be more than or equal to 10s, and be less than or
Person is equal to 15s.
In order to preferably play the effect of the method for charging batteries of the present invention, the second used charging of each subpulse charging
Electric current is identical, and the second charging current that pulse charge is used every time is more than or equal to 0.01C, and is less than or equal to
1.5C。
During a concrete implementation, the second charging current that each pulse charge is used is more than or equal to
0.05C, and it is less than or equal to 1.2C；Or, the second charging current that each pulse charge stage is used is more than or waits
In 0.05C, and it is less than or equal to 1.0C；Or, the second charging current that each pulse charge is used is more than or equal to
0.05C, and it is less than or equal to 0.7C；Or, the second charging current that each pulse charge is used is more than or equal to
0.1C, and it is less than or equal to 1.2C；Or, the second charging current that each pulse charge is used is more than or equal to
0.1C, and it is less than or equal to 1.0C；Or the second charging current that each pulse charge is used is more than or equal to 0.1C,
And it is less than or equal to 0.7C；Or, the second charging current that each pulse charge is used is more than or equal to 0.2C, and little
In or be equal to 1.2C；Or, the second charging current that each pulse charge is used be more than or equal to 0.2C, and be less than or
Person is equal to 1.0C；Or, the second charging current that each pulse charge is used is more than or equal to 0.2C, and is less than or waits
In 0.7C；Or, the second charging current that each pulse charge is used is more than or equal to 0.5C, and is less than or equal to
1.2C；Or, the second charging current that each pulse charge is used is more than or equal to 0.5C, and is less than or equal to
1.0C；Or, the second charging current that each pulse charge is used is more than or equal to 0.5C, and is less than or equal to
0.7C。
In order to preferably play the effect of the method for charging batteries of the present invention, in each pulse charge stage, second is used
The charging duration used when constant current is charged is identical, and the charging duration be more than or equal to 0.01s, and be less than or
Person is equal to 10s.
During a concrete implementation, the first charging duration that each pulse charge is used is more than or equal to
0.02s, and it is less than or equal to 7s；Or, the first charging duration that each pulse charge is used is more than or equal to
0.02s, and it is less than or equal to 5s；Or, the first charging duration that each pulse charge is used is more than or equal to
0.05s, and it is less than or equal to 7s；Or, the first charging duration that each pulse charge is used is more than or equal to
0.05s, and it is less than or equal to 5s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.1s,
And it is less than or equal to 7s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.1s, and is less than
Or it is equal to 5s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.5s, and is less than or waits
In 7s；Or, the first charging duration that each pulse charge is used is more than or equal to 0.5s, and is less than or equal to 5s；
Or, the first charging duration that each pulse charge is used is more than or equal to 1s, and is less than or equal to 7s；Or, often
Subpulse charges the first used charging duration more than or equal to 1s, and is less than or equal to 5s；Or, fill per subpulse
The first charging duration that electricity is used is more than or equal to 2s, and is less than or equal to 7s；Or, each pulse charge is used
The first charging duration be more than or equal to 2s, and be less than or equal to 5s.
In order to preferably improve the speed of charging, in the method for charging batteries in the embodiment of the present invention, in each pulse
It is in charging stage, identical using the standing duration for standing the battery, and the standing duration is more than or equal to 0.01s, and it is little
In or be equal to 10s.
In order to preferably improve the speed of charging, in the method for charging batteries in the embodiment of the present invention, battery is filling
Environment temperature in electric process is more than or equal to 0 DEG C, and is less than or equal to 60 DEG C.
During a concrete implementation, the method for charging batteries in the embodiment of the present invention can apply to battery charging
In device, battery adapter, battery control circuit, chip.In the present embodiment, only enumerate the above several for being filled for battery
The equipment of electricity, corresponding other have the equipment of identical function within the scope of the present invention.
During a concrete implementation, using the charged battery of the method for charging batteries in the embodiment of the present invention,
Can apply 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 including but 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..
Method for charging batteries provided in an embodiment of the present invention, when the voltage of battery is not up to voltage threshold, by using
The mode of pulse charge is charged to battery, is included during each pulse charge, using the first constant current to electricity
Pond carries out constant-current charge, carries out constant-current charge, resting batteries to battery using the second constant current, is carrying out at least two to battery
After subpulse charges, stop pulse charge being carried out to battery when the voltage of battery reaches voltage threshold, perseverance is carried out to battery then
Pressure charges, and when the electric current of battery reaches cut-off current, stopping carries out constant-voltage charge to battery, in technical scheme
In, during each pulse charge can resting batteries, such that it is able to eliminate the polarization phenomena that battery is produced in charging process,
Therefore the security and cycle life of battery are improve, and during pulse charge, no discharge process shortens charging
Time, and then improve charging rate.
In order that the goal of the invention of the present invention, technical scheme and technique effect become apparent from, below in conjunction with accompanying drawing and enforcement
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 provided in the invention is not limited in specification.
Hereinafter will be illustrated using contrast scheme and embodiment, wherein, contrast what scheme and each embodiment were adopted
Battery system is with LiCoO2Used as negative electrode, graphite, is applied by batch mixing along with barrier film, electrolyte and pack case as anode
The techniques such as cloth, assembling, chemical conversion and ageing are made.Wherein, negative electrode is by 96.7%LiCoO2(as cathode active material)+1.7%
PVDF (as binding agent)+1.6%SP (as conductive agent) mixing compositions, anode is by 98% Delanium (as anode activity
Material)+1.0%SBR (as binding agent)+1.0%CMC (as thickener) mixing compositions, barrier film is PP/PE/PP composite membranes,
LiPF6 of the electrolyte by organic solvent (30%EC+30%PC+40%DEC) and 1mol/L, add additive (0.5%VC,
5%FEC, 4%VEC) composition.
Contrast scheme one set forth below, contrast scheme two, contrast scheme three be using charging method of the prior art,
The test carried out under different charge conditions.
Contrast scheme one
Test temperature：Room temperature
Charge condition sets：Constant current is 0.7C, blanking voltage is 4.4V, cut-off current is 0.05C.
Charging process：It is charged for battery using the constant current of 0.7C, until the voltage of battery reaches blanking voltage
4.4V, the constant voltage for being continuing with 4.4V are charged for battery, until the electric current of battery reaches cut-off current 0.05C.
Contrast scheme two
Test temperature：0℃
Charge condition sets：Constant current is 0.1C, blanking voltage is 4.4V, cut-off current is 0.05C.
Charging process：It is charged for battery using the constant current of 0.1C, until the voltage of battery reaches blanking voltage
4.4V, the constant voltage for being continuing with 4.4V are charged for battery, until the electric current of battery reaches cut-off current 0.05C.
Contrast scheme three
Test temperature：60℃
Charge condition sets：Constant current is 0.7C, blanking voltage is 4.4V, cut-off current is 0.05C.
Charging process：It is charged for battery using the constant current of 0.7C, until the voltage of battery reaches blanking voltage
4.4V, the constant voltage for being continuing with 4.4V are charged for battery, until the electric current of battery reaches cut-off current 0.05C.
Embodiment one set forth below, embodiment two, embodiment three, embodiment four, embodiment five, implement
Scheme six, embodiment seven are the test carried out under different charge conditions using the charging method in the embodiment of the present invention.
Embodiment one
Test temperature：Room temperature
Charge condition sets：First constant current I1For 1.2C, the second constant current I2For 0.1C, the first charging duration T1
For 9s, the second charging duration T2For 0.5s, time of repose T3It is that 4.4V, cut-off current Iend are 0.05C for 0.5s, blanking voltage.
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, resting batteries, a length of T during standing3。
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current
Iend0.05C。
Embodiment two
Test temperature：0℃
Charge condition sets：First constant current I1For 0.2C, the second constant current I2For 0.01C, the first charging duration T1
For 0.9s, the second charging duration T2For 0.5s, time of repose T3For 0.05s, blanking voltage for 4.4V, cut-off current Iend it is
0.05C。
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, resting batteries, a length of T during standing3。
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current
Iend0.05C。
Embodiment three
Test temperature：60℃
Charge condition sets：First constant current I1For 0.8C, the second constant current I2For 0.05C, the first charging duration T1
For 0.9s, the second charging duration T2For 0.05s, time of repose T3For 0.05s, blanking voltage for 4.4V, cut-off current Iend it is
0.05C。
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, resting batteries, a length of T during standing3。
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current
Iend0.05C。
Embodiment four
Test temperature：Room temperature
Charge condition sets：First constant current I1For 1.2C, the second constant current I2For 0.7C, the first charging duration T1
For 15s, the second charging duration T2For 5s, time of repose T3It is that 4.4V, cut-off current Iend are 0.05C for 5s, blanking voltage.
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, resting batteries, a length of T during standing3。
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current
Iend0.05C。
Embodiment five
Test temperature：Room temperature
Charge condition sets：First constant current I1For 2C, the second constant current I2For 1.5C, the first charging duration T1For
0.9s, the second charging duration T2For 0.05s, time of repose T3For 0.1s, blanking voltage for 4.4V, cut-off current Iend it is
0.05C。
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, resting batteries, a length of T during standing3。
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current
Iend0.05C。
Embodiment six
Test temperature：Room temperature
Charge condition sets：First constant current I1For 0.8C, the second constant current I2For 0.4C, the first charging duration T1
For 30s, the second charging duration T2For 1s, time of repose T3It is that 4.4V, cut-off current Iend are 0.05C for 0.1s, blanking voltage.
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, resting batteries, a length of T during standing3。
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current
Iend0.05C。
Embodiment seven
Test temperature：Room temperature
Charge condition sets：First constant current I1For 3C, the second constant current I2For 0.7C, the first charging duration T1For
0.1s, the second charging duration T2For 10s, time of repose T3It is that 4.4V, cut-off current Iend are 0.05C for 0.1s, blanking voltage.
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, resting batteries, a length of T during standing3。
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current
Iend0.05C。
Experimental result：
, in charging process, there is no the situation that anode analyses lithium in the battery in one～embodiment of embodiment seven.
In experimentation, data value of each battery in different phase is recorded, its result can pass through following three width figure
And table 1 is illustrating.
Fig. 3 is the current-vs-time graph of a relation of contrast scheme one and embodiment one, as shown in figure 3, in one in embodiment
The charging current that can be used in the pulse charge stage is bigger, and before blanking voltage is reached, it is compared with contrast scheme one, real
The charging interval applied used in scheme one is shorter.
Fig. 4 is the voltage-vs-time graph of a relation of contrast scheme one and embodiment one, as shown in figure 4, in one in embodiment
In the pulse charge stage, the voltage of battery is less, by less second constant current and the effect for standing so that the electricity of battery
Certain phase is pressed in relatively low voltage, is promoted battery that analysis lithium will not occur, is improved the security of battery.
Fig. 5 is the charging interval-battery current percentage relation figure of contrast scheme one and embodiment one, as shown in figure 5,
Using the method for charging batteries in the embodiment of the present invention, its charging rate is significantly faster than that the charging rate in contrast scheme one.
Table 1 is the contrast table of contrast scheme and embodiment with regard to filling time, as shown in table 1, by comparing to analogy
Case one and embodiment one, contrast scheme two and embodiment two, contrast scheme three and embodiment three, contrast scheme one with it is real
Scheme four, contrast scheme one are applied with embodiment five, contrast scheme one and embodiment six, contrast scheme three and embodiment
Seven, when being charged for battery using the method for charging batteries in the present embodiment, which completely fills the time and fills than of the prior art
Time required for method for electrically is shorter.
Table 1
In set below test, the mode of pulse charge is adopted to be charged for battery, wherein, contrast scheme four is to adopt
Battery is charged with method for charging batteries of the prior art, embodiment four is using the battery in the embodiment of the present invention
Charging method is charged to battery.
Contrast scheme four
Test temperature：Room temperature
Charge condition sets：First constant current I1For 1.2C, the second constant current I2For 0.1C, the first charging duration T1
For 10s, the second charging duration T2For 1s, the 3rd constant current I3For 0.1C, discharge time T3It is 4.4V, cuts for 2s, blanking voltage
Only electric current is 0.05C.
Charging process：
First stage is the pulse charge stage：
Step one, using I1Charge for battery, a length of T during charging1；
Step 2, using I2Charge for battery, a length of T during charging2；
Step 3, using I3For battery discharge, a length of T during electric discharge3。
Repeat step step 3 always, until the voltage of battery reaches the pre-charge voltage 4.39V of battery.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current 0.05C.
Embodiment eight
Test temperature：Room temperature
Charge condition sets：It is 0.1C, the first charging duration T1 that first constant current I1 is 1.2C, the second constant current I2
For 10s, the second charging duration T2 be 1s, time of repose T3 be 2s, blanking voltage be 4.4V, cut-off current be 0.05C.
Charging process：
First stage is the pulse charge stage：
Step one, is charged for battery using I1, a length of T1 during charging；
Step 2, is charged for battery using I2, a length of T2 during charging；
Step 3, resting batteries, a length of T3 during standing.
Repeat step step 3 always, until the voltage of battery reaches blanking voltage 4.4V.
Second stage is constant voltage charging phase：
The constant voltage for being continuing with 4.4V is charged for battery, until the electric current of battery reaches cut-off current 0.05C.
Experimental result：
, in charging process, there is no the situation that anode analyses lithium in the battery in embodiment eight.
In experimentation, data value of each battery in different phase is recorded, its result can pass through following width figure
And table 2 is illustrating.
Fig. 6 is the capability retention-cycle-index graph of a relation of contrast scheme four and embodiment eight, as shown in fig. 6, adopting
Method for charging batteries in the embodiment of the present invention during repeatedly charge-discharge test is carried out to battery, compared in prior art
Method for charging batteries for, the capability retention of battery is higher.
Table 2 is the contrast table of contrast scheme four and embodiment eight with regard to filling time, as shown in table 2, right by comparison
Than scheme four and embodiment eight, when being charged for battery using the method for charging batteries in the present embodiment, which completely fills the time
It is shorter than the time required for charging method of the prior art, and the capability retention of battery is higher.
Table 2
Below in seven groups of tests, the mode of pulse charge is adopted to be charged for battery, wherein, contrast scheme five～right
It is battery to be charged using method for charging batteries of the prior art than scheme ten, mistake of its process with contrast scheme four
Cheng Xiangtong, only test parameter are different.Nine～embodiment of embodiment 14 is to be filled using the battery in the embodiment of the present invention
Method for electrically is charged to battery, and its process is identical with the process of contrast scheme four, and only test parameter is different.
In experimentation, data value of each battery in different phase is recorded, its result can be entered by table 3 below
Row explanation.
Table 3 is the contrast table of contrast scheme and embodiment with regard to filling time, as shown in table 3, by comparing to analogy
Case five and embodiment nine, contrast scheme six and embodiment ten, contrast scheme seven and embodiment 11, contrast scheme eight with
Embodiment 12, contrast scheme nine are could be aware that with embodiment 13, contrast scheme ten and embodiment 14, using this
When method for charging batteries in embodiment is charged for battery, which completely fills the time than needed for charging method of the prior art
The time wanted is shorter, and the capability retention of battery is higher.
Embodiment two
Fig. 7 is the structural representation of battery charger embodiment provided in an embodiment of the present invention, as shown in fig. 7, this
The battery charger of bright embodiment, can include：Pulse charge unit 11 and constant-voltage charge unit 12.
As shown in fig. 7, pulse charge unit 11, for carrying out pulse charge at least twice to battery, until the electricity of battery
When pressure reaches voltage threshold, stopping carries out pulse charge to battery.
Constant-voltage charge unit 12, for carrying out constant-voltage charge to battery, when the electric current of battery reaches cut-off current, stops
Constant-voltage charge is carried out to battery only.
Wherein, each pulse charge includes：
Constant-current charge is carried out to battery using the first constant current；
Constant-current charge is carried out to battery using the second constant current；
Resting batteries.
It should be noted that battery charger provided in an embodiment of the present invention can apply to battery charger, battery
In adapter, battery control circuit or chip.
The device of the present embodiment, can be used for performing the technical scheme of embodiment of the method shown in Fig. 1, and which realizes principle and skill
Art effect is similar to, and here is omitted.
Finally it should be noted that：Various embodiments above only to illustrate technical scheme, rather than a limitation；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (11)
1. a kind of method for charging batteries, it is characterised in that include：
Pulse charge at least twice is carried out to the battery, when the voltage of the battery reaches voltage threshold, is stopped to institute
Stating battery carries out pulse charge；And, constant-voltage charge is carried out to the battery, until the electric current of the battery reaches cut-off current
When, stopping carries out constant-voltage charge to the battery；
Wherein, the pulse charge includes every time：
Constant-current charge is carried out to the battery using the first constant current；
Constant-current charge is carried out to the battery using the second constant current；
Stand the battery.
2. method according to claim 1, it is characterised in that it is described first constant that each pulse charge is used
Electric current is identical, and every time first constant current used by the pulse charge is more than or equal to 0.2C, and be less than or
Person is equal to 3C.
3. method according to claim 1, it is characterised in that in each pulse charge, described first for using
The charging duration used when constant current is charged is identical, and the charging duration be more than or equal to 0.1s, and be less than or
Person is equal to 30s.
4. method according to claim 1, it is characterised in that it is described second constant that each pulse charge is used
Electric current is identical, and every time second constant current used by the pulse charge is more than or equal to 0.01C, and be less than or
Person is equal to 1.5C.
5. method according to claim 1, it is characterised in that in each pulse charge stage, using described second
The charging duration used when constant current is charged is identical, and the charging duration be more than or equal to 0.01s, and be less than or
Person is equal to 10s.
6. method according to claim 1, it is characterised in that in each pulse charge stage, using the standing
The standing duration of the battery is identical, and the standing duration is more than or equal to 0.01s, and is less than or equal to 10s.
7. the method according to any one of claim 1-6, it is characterised in that environment of the battery in charging process
Temperature is more than or equal to 0 DEG C, and is less than or equal to 60 DEG C.
8. the method according to any one of claim 1-6, it is characterised in that methods described be applied to battery charger,
In battery adapter, battery control circuit or chip.
9. the method according to any one of claim 1-6, it is characterised in that the battery applications are in terminal, wearable
In equipment, electric tool, portable power source, unmanned plane, electric motor car or electric automobile.
10. a kind of battery charger, it is characterised in that include：
Pulse charge unit, for carrying out pulse charge at least twice to the battery, until the voltage of the battery reaches electricity
During pressure threshold value, stopping carries out pulse charge to the battery；
Constant-voltage charge unit, for carrying out constant-voltage charge to the battery, when the electric current of the battery reaches cut-off current,
Stopping carries out constant-voltage charge to the battery；
Wherein, the pulse charge includes every time：
Constant-current charge is carried out to the battery using the first constant current；
Constant-current charge is carried out to the battery using the second constant current；
Stand the battery.
11. devices according to claim 10, it is characterised in that described device is applied to battery charger, battery adaptation
In device, battery control circuit or chip.
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| CN107834630A (en) * | 2017-11-08 | 2018-03-23 | 维沃移动通信有限公司 | A kind of charging method and charging device |
| CN110890600A (en) * | 2019-09-24 | 2020-03-17 | 北京理工大学 | Charging method for 18650 type lithium ion battery in low-temperature environment |
| CN111342160A (en) * | 2020-03-09 | 2020-06-26 | 欣旺达电动汽车电池有限公司 | Quick charging method |
| CN111446514A (en) * | 2020-03-17 | 2020-07-24 | 上海理工大学 | Method for reasonably adjusting discharge cut-off voltage of lithium battery along with service life attenuation of battery |
| CN111668568A (en) * | 2020-06-24 | 2020-09-15 | 莱西市寰球新能源技术中心 | Formation process of lithium ion battery |
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