CN110071540A - A kind of balance charging method of lithium-ions battery packet - Google Patents
A kind of balance charging method of lithium-ions battery packet Download PDFInfo
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- CN110071540A CN110071540A CN201910243488.3A CN201910243488A CN110071540A CN 110071540 A CN110071540 A CN 110071540A CN 201910243488 A CN201910243488 A CN 201910243488A CN 110071540 A CN110071540 A CN 110071540A
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000005611 electricity Effects 0.000 claims abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000011217 control strategy Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of balance charging methods of lithium-ions battery packet, and all series units in battery packet are connected in series, and each series unit is equipped with a set of independent equilibrium charging module, and each series unit is all connected to battery management system.Advantages of the present invention: only increasing equilibrium charging movement in charging end, is charged and discharged the time in battery pack others, equilibrium charging circuit does not work, and does not need complicated control strategy, and system is reliable and stable；Only external charging input energy, after charging electricity, there is no other balancing actions between each battery inside battery pack, and without energy loss caused by equalizing circuit, capacity usage ratio is high；With the ability for adjusting biggish uneven difference, each cell capacity, state-of-charge can be with short time adjustments when the imbalances such as internal resistance differ greatly in battery pack；When can reduce lithium-ions battery packet combo, the requirement of each single battery various performance parameters consistency is selected.
Description
Technical field
The present invention relates to a kind of balance charging methods of lithium-ions battery packet, belong to technical field of lithium batteries.
Background technique
Lithium ion battery was pushed by national policy in recent years, and technological progress is significant, and cost declines to a great extent, and was answered on a large scale
For vehicle power and energy storage field, lithium ion battery has the advantages that energy density is high, and the service life is long, good economy performance, also has
Shortcomings need that necessary technological means is taken to avoid.For example lithium ion battery charging and discharging need electronic circuit and journey
The battery packet that sequence forms in parallel and serial into software row management, more lithium ion batteries, due to single battery self confidence
Each single battery position is different in difference and battery pack, and temperature environment is also different, and the contact resistance of circuit tie is poor
Different, the accumulation of these differences will lead to the capacity status of each single cell operation, voltage in lithium-ions battery packet, internal resistance,
The parameters such as charging and discharging curve are inconsistent, reduce the actually available capacity of entire battery packet, lithium-ions battery is caused when serious
Packet damage.It shows as pressure difference on electric vehicle to become larger, mileage number shortens, or vehicle of lying prone cannot be run.In energy storage battery packet
Application in, show as storage degree decline, power-on time shorten etc..
In order to enable battery packet keeps each single battery state-of-charge identical as far as possible in use, each string is eliminated
The continuous accumulation of receipts or other documents in duplicate member inconsistency, so that battery packet works normally, person skilled in art devises various control
Circuit balances the difference that the work of each circulating battery generates, and can be divided into two classes: energy-dissipating and non-energy dissipative equalization electricity
Road.
The advantages of equalization methods of energy-dissipating is that circuit structure is simple, and high reliablity is at low cost.The disadvantage is that energy consumption compared with
Greatly, balancing speed is slow, low efficiency, and resistive dissipation will affect system normal operation, need to configure fan cooling when doing high current,
Increase fault point, influences service life, be not suitable for the circuit for doing the heavy-current discharge of several ampere levels, be suitble to do several hundred milliamperes
The low current circuit of rank, therefore it is only applicable to the lesser battery pack of capacity, the biggish battery pack of capacity is not applicable.
The equalizing circuit form of non-energy dissipative type has:
1, switching capacity method topology
Switching capacity method topology, capacitor are switched on-off by different levels, store the higher battery cell energy of voltage, then be released to
The lower battery cell of voltage.Energy-storage travelling wave tube in topology can be inductively or capacitively, and principle is similar.The knot of this equalization methods
Structure is simple, is easy to control, and energy loss is smaller, but when the voltage difference of adjacent cell is smaller, time for balance can be longer, balanced
Speed it is slow；Equalization efficiency is low, not applicable to the occasion of high current quick charge.
2, DC-DC current transformer method
Centralized and distributed two kinds are broadly divided into using the circuit topology of DC-DC current transformer equilibrium.It does not damage theoretically
Consumption, balancing speed is fast, is the mainstream scheme in present lithium battery active equalization method.
2.1 centralized transformer equalizations
The advantages of this equalizing structure is that balancing speed is fast, high-efficient, is lost low.The disadvantage is that when voltage is relatively high, battery pack string
When connection number of batteries is more, the accurate difficulty of matching of the vice-side winding of transformer will be larger, the leakage inductance institute of transformer
Caused by voltage difference be also difficult to compensate, element is more, and volume is not easy to greatly modularization, and switching tube is high pressure resistant.
2.2 distributing non-isolation type topology equalizations
The structure of distributing equalization is that an equalizing circuit in parallel is configured to each monomer, is divided into the isolated form electricity with transformer
Road and non-isolation type circuit.
Non-isolation type topology is the bidirectional equalization based on adjacent monomer equilibrium, because fairly simple without transformer device structure, than
Compared with suitable for the lesser occasion of series-connected cell group number.
2.3 distributing isolated form topology equalizations
Each equalizing circuit is the circuit with isolating transformer.Advantage is that equalization efficiency is high, is held on switching device
How much unrelated the voltage levels received and series connection series is, and this equalizing structure is relatively adapted to the biggish field of series-connected cell group quantity
It closes；Its major defect is that have more magnetic element in circuit, and volume is big, is easy mutual inductance, there are leakage inductances for transformer, and are difficult to line
Circle remains exactly the same.
Existing equalization methods, no matter energy-dissipating and non-energy dissipative equalization method, are all to be conceived to battery
Energy transfer inside energy dissipation or battery packet inside packet between single battery, equalizing circuit work times are more,
Each single cell operation load increases, and consumes the cycle life of these single batteries, and control strategy is relative complex, and one
Denier is out of control, or is easy to produce Infinite Cyclic equilibrium when battery, leads to electric power storage when having the serious self discharge of internal short-circuit big monomer
Chi Bao entirety over-discharge.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of applicability wide, and control is simple, will not overcharge and over-discharge
The balance charging method of lithium-ions battery packet.
The present invention is realized by following proposal: a kind of balance charging method of lithium-ions battery packet, in battery packet
A set of independent equilibrium charging module is connected on each series unit.
All series units in battery packet are connected in series, each a set of independent balance of series unit is filled
Electric module, each series unit are all connected to battery management system.
Independent voltage check device is equipped on each series unit, the voltage check device is connected to described
Battery management system.
Each equilibrium charging module is all connected to external charging power output end, and the battery packet is connected to voltage
Total input terminal and the total output end of voltage, the equilibrium charging module are integrated in battery packet, or are integrated and be assemblied in battery pack
In outer charger, or integrates and be assemblied in standalone chassis.
The series unit is single battery or is formed in parallel by multiple single batteries.
Each equilibrium charging module is all connected with independent switch, and the switch is connected to battery management system.
Affiliated equilibrium charging module is not connected to battery management system, is equipped with control device in the equilibrium charging module,
It voluntarily turns off, or is kept with the constant-voltage charge state of charge cutoff voltage in end of charge voltage.
A kind of balance charging method of lithium-ions battery packet, it includes following steps:
Step 1: the series-parallel battery packet of multiple batteries is integrally gone here and there with external charger and is charged to full power state；
Step 2: closing string charging stream, or keeps the whole string charging stream of extremely low multiplying power, and it is respective for opening equilibrium charging module
Corresponding series unit individually charges；
Step 3: when battery management system detects that the voltage of all batteries all reaches the end of charge voltage of setting, stop
Charging.
A kind of balance charging method of lithium-ions battery packet, it includes following steps:
Step 1: some series unit of battery packet is charged to voltage full power state using charger high current string；
Step 2: it closes to go here and there to charge and flow, or keep the string of small multiplying power to charge and flow；
Step 3: opening equilibrium charging circuit, is that corresponding series unit individually charges by equilibrium charging module；
Step 4: series unit voltage reaches full power state, respectively successively independent to stop charging, or is maintained at charge cutoff electricity
Press the trick charge of position constant pressure.
A kind of balance charging method of lithium-ions battery packet, it includes following steps:
Step 1: battery management system controls charger and fills to battery progress high current string, until some in battery packet
The voltage full power state signal of some series unit is transmitted to electricity by series unit to voltage full power state, voltage check device
Pond management system；
Step 2: battery management system, which closes to go here and there to charge, to flow, or keeps the string of small multiplying power to charge and flow；
Step 3: battery management system opens equilibrium charging circuit, is that corresponding series unit is independent by equilibrium charging module
Charging；
Step 4: when corresponding voltage check device detects that the voltage of the series unit reaches full power state in series unit,
Battery management system is passed the signal along to, battery management system controls the corresponding equilibrium charging module stopping of the series unit and fills
Electricity；Or equilibrium charging module self detects the full electricity of corresponding series unit, maintains constant pressure trick charge；
Step 5: battery management system detects that all series units reached once completely piezoelectric voltage, then is determined as the knot that charges
Beam exits charged state, and at this moment the SOC state of every string battery is all 100%.
The invention has the benefit that
1, a kind of balance charging method of lithium-ions battery packet of the present invention only increases equilibrium charging movement in charging end,
Battery pack others are charged and discharged the time, and equilibrium charging circuit is in off-position and does not work, and do not need complicated control plan
Slightly, also other circuits are not formed and is interfered, system is reliable and stable；
2, a kind of end of the balance charging method of lithium-ions battery packet of the present invention balances the module that series unit charges
Charging module is very mature technology, reliable and stable, is easily found the supplier for having working ability, secure, cost of supplying
It is cheap；
3, a kind of balance charging method of lithium-ions battery packet of the present invention is external charging input energy, after charging electricity,
There is no the balancing actions that other external circuit applies between each battery inside battery pack, without energy caused by equalizing circuit
Loss, and the equalizing circuit of energy-dissipating will consume energy additionally to realize equilibrium, the equalizing circuit of non-energy dissipative type,
High-tension battery energy is obtained, during A-battery charging, transfer efficiency can not be converted absolutely, and there is also certain
Energy consumption generate waste, relative to the equalizing circuit of energy-dissipating and non-energy dissipative type, energy utilization of the invention
Rate is high, not additional energy consumption；
4, a kind of balance charging method of lithium-ions battery packet of the present invention does not have additional energy dissipation, while circuit is simple, institute
The biggish equilibrium charging electric current that compares can be made, for example it is built in inside lithium-ions battery packet in equilibrium charging circuit
Occasion, do toward low current, 0.2A can be, done toward high current, can accomplish 5A, in equilibrium charging circuit and battery packet point
From external occasion, it might even be possible to accomplish 5-30A, or more high current, applicability are very wide；
5, a kind of balance charging method of lithium-ions battery packet of the present invention has the ability for adjusting biggish uneven difference, stores
Each cell capacity, state-of-charge in battery pack can be with short time adjustments when the imbalances such as internal resistance differ greatly；
6, it when a kind of balance charging method of lithium-ions battery packet of the present invention can reduce lithium-ions battery packet combo, selects
The requirement of each single battery various performance parameters consistency, has saved cost, has improved efficiency；
7, a kind of balance charging method of lithium-ions battery packet of the present invention can increase substantially lithium-ions battery packet combo
Rate in groups；
8, a kind of balance charging method of lithium-ions battery packet of the present invention can increase substantially lithium-ions battery group
PACK work efficiency, PACK in groups when, if different series units has biggish SOC difference, own equilibrium charging circuit can be put down
Weighing apparatus eliminates the working hour of individually disassembly or pressure regulation；
9, a kind of balance charging method of lithium-ions battery packet of the present invention is suitable for lithium-ions battery packet more harsh
Operating condition, such as occasions, the harsh operating condition such as logistic car of fast charging and discharging mean that use environment factor will lead in battery packet
The biggish uneven difference of each series unit；
10, the work efficiency of after-sales service can be improved in a kind of balance charging method of lithium-ions battery packet of the present invention, shortens client
The waiting time is repaired, promotes client to the reputation of product；
11, a kind of balance charging method of lithium-ions battery packet of the present invention is poor to the state-of-charge of battery in after-sales service
Different to require low, as long as capacity is more than original battery capacity, self-discharge of battery qualification is not short-circuit, i.e., the damage electricity in replaceable packet
Pond, is not required to the SOC state of each series unit in special regulating cell packet after replacement, as long as the battery SOC and battery changed
Other battery SOCs can deliver to customer normal use generally proximal to the charging for just, then doing a relatively long time in wrapping,
Or voluntarily charge can also be with work efficiency after sale is very high, low in cost by client；
12, a kind of balance charging method of lithium-ions battery packet of the present invention uses the battery packet loop service life of the invention substantially
Degree improves, will not be to the high-voltage battery string in lithium-ions battery packet using of the invention close to single battery cycle life
Join cell discharge, the charging of A-battery series unit avoids the charge and discharge number for additionally increasing high-voltage battery and A-battery
And workload, it will not have a negative impact to the bulk life time of battery packet, the service life of battery packet is equal to the service life in packet
That worst single battery；
13, a kind of balance charging method of lithium-ions battery packet of the present invention is needed due to adding additional equilibrium charging module
The purchase cost of extraneous expense equilibrium charging module, these increased purchase costs can be referred to from above-mentioned beneficial effect
Rate improves in groups, PACK work efficiency improves, work efficiency after sale such as improves at production and the manufacture and expense after sale got off of link saving after sale
It is compensated at original.It is equivalent to and a part of manufacturing expense to be lost is changed into a battery and contract for fixed output quotas powerful equilibrium in product
Function creates additional use income for client, calculates whole economic account, do not increase cost, but also increase product
Applicable working condition, improve customer satisfaction.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the balance charging method of lithium-ions battery packet of the present invention.
In figure: U1, U2 are the power inputs of equilibrium charging module.
J1, J2, J3...Jn are equilibrium charging modules.
B1, B2, B3...Bn are each series units of battery packet.
D1, D2 be respectively battery packet it is total just and total negative terminals, when battery pack is discharged, be battery packet anode and
Cathode output end is the input terminal of string charging stream in serial connection charge.
BMS is battery packet management system.
Specific embodiment
Below with reference to Fig. 1, the present invention is further described, but the scope of the present invention does not limit to the content.
Wherein identical components are presented with like reference characters.It should be noted that word used in the following description
Language "front", "rear", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to court
To or far from geometric center of specific component direction, and attached drawing is all made of very simplified form and uses non-accurate ratio
Rate, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
For clarity, not describing whole features of practical embodiments, in the following description, it is not described in detail well known function
And structure, because they can make the present invention chaotic due to unnecessary details, it will be understood that opening in any practical embodiments
In hair, it is necessary to make a large amount of implementation details to realize the specific objective of developer, such as according to related system or related business
Limitation, changes into another embodiment by one embodiment, additionally, it should think that this development may be complicated and expend
Time, but to those skilled in the art it is only routine work.
A kind of balance charging method of lithium-ions battery packet, by series unit B1 in battery packet, series unit B2, string
Receipts or other documents in duplicate member B3... series unit Bn is connected in series, and series unit B1 is connected to equilibrium charging module J 1, by Series Sheet
First B2 is connected to equilibrium charging module J 2, and series unit B3 is connected to equilibrium charging module J 3... and connects series unit Bn
To equilibrium charging module J n, series unit B1, series unit B2, series unit B3... series unit Bn is connected to battery management
System BMS, series unit B1 are equipped with independent voltage detecting on series unit B2, series unit B3... series unit Bn
Device, voltage check device are connected to the battery management system BMS, equilibrium charging module J 1, equilibrium charging module J 2, balance
Charging module J3... equilibrium charging module J n is all connected to power input U1 and power input U2, battery packet it is total just
The end D1 and total negative end D2, are switched by external circuit, are connected to external charging power supply in charging, are filled outside disconnection in electric discharge
Power supply is connected to electric terminal.Equilibrium charging module J 1, equilibrium charging module J 2, equilibrium charging module J 3... equilibrium charging
Module J n is perhaps integrated in the charger being assemblied in outside battery pack or integrated is assemblied in standalone chassis in battery packet
Interior, series unit B1, series unit B2, series unit B3... series unit Bn is for single battery or by multiple single batteries
It is formed in parallel, equilibrium charging module J 1, equilibrium charging module J 2, equilibrium charging module J 3... equilibrium charging module J n is all connected with
Independent switch, switch are connected to battery management system BMS.
A kind of balance charging method of lithium-ions battery packet, it includes following steps:
Step 1: battery management system BMS controls charger and fills to battery progress high current string, until a certain in battery packet
The voltage full power state signal of some series unit is transmitted to by a series unit to voltage full power state, voltage check device
Battery management system BMS；
Step 2: battery management system BMS, which closes to go here and there to charge, to flow, or keeps the string of small multiplying power to charge and flow；
Step 3: battery management system BMS opens equilibrium charging circuit, is corresponding series unit list by equilibrium charging module
Solely charging；
Step 4: when corresponding voltage check device detects that the voltage of the series unit reaches full power state in series unit,
Battery management system BMS is passed the signal along to, battery management system BMS controls the corresponding equilibrium charging module of the series unit and stops
Only charge or battery management system do not need BMS control, equilibrium charging power supply independently voluntarily control this unit it is fully charged when pass
It is disconnected, or maintain charge cutoff voltage and carry out constant pressure trick charge；
Step 5: battery management system BMS detects that the series unit of all strings reached once completely piezoelectric voltage, then is judged to filling
Electricity terminates, and exits charged state, and at this moment the SOC state of every string battery is all 100%.
Although having done more detailed elaboration to technical solution of the present invention and having enumerated, it should be understood that for ability
For field technique personnel, modifications to the embodiments described above may be made or uses equivalent alternative solution, this is to those skilled in the art
It is it is clear that these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the present invention for member
Claimed range.
Claims (10)
1. a kind of balance charging method of lithium-ions battery packet, it is characterised in that: in battery packet on each series unit
Connect a set of independent equilibrium charging module.
2. a kind of balance charging method of lithium-ions battery packet according to claim 1, it is characterised in that: by battery
All series units are connected in series in wrapping, each a set of independent equilibrium charging module of series unit, each series connection
Unit is all connected to battery management system.
3. a kind of balance charging method of lithium-ions battery packet according to claim 2, it is characterised in that: each described
Independent voltage check device is equipped on series unit, the voltage check device is connected to the battery management system.
4. a kind of balance charging method of lithium-ions battery packet according to claim 2, it is characterised in that: each described
Equilibrium charging module is all connected to the output end of external charging power supply, and the battery packet is connected to the total input terminal of voltage and voltage
Total output end, equilibrium charging module are integrated in battery packet, or in the integrated charger being assemblied in outside battery pack, Huo Zheji
At being assemblied in standalone chassis.
5. a kind of balance charging method of lithium-ions battery packet according to claim 1, it is characterised in that: the series connection
Unit is single battery or is formed in parallel by multiple single batteries.
6. a kind of balance charging method of lithium-ions battery packet according to claim 2, it is characterised in that: each described
Equilibrium charging module is all connected with independent switch, and the switch is connected to battery management system.
7. a kind of balance charging method of lithium-ions battery packet according to claim 1, it is characterised in that: affiliated balance
Charging module is not connected to battery management system, control device is equipped in the equilibrium charging module, in end of charge voltage
It voluntarily turns off, or keeps with the constant-voltage charge state of charge cutoff voltage.
8. a kind of balance charging method of lithium-ions battery packet according to claim 1, it is characterised in that: it includes with
Lower step:
Step 1: the series-parallel battery packet of multiple batteries is integrally gone here and there with external charger and is charged to full power state；
Step 2: closing string charging stream, or keeps the whole string charging stream of extremely low multiplying power, and it is respective for opening equilibrium charging module
Corresponding series unit individually charges；
Step 3: when battery management system detects that the voltage of all batteries all reaches the end of charge voltage of setting, stop
Charging.
9. a kind of balance charging method of lithium-ions battery packet according to claim 8, it is characterised in that: it includes with
Lower step:
Step 1: some series unit of battery packet is charged to voltage full power state using charger high current string；
Step 2: it closes to go here and there to charge and flow, or keep the string of small multiplying power to charge and flow；
Step 3: opening equilibrium charging circuit, is that corresponding series unit individually charges by equilibrium charging module；
Step 4: series unit voltage reaches full power state, respectively successively independent to stop charging, or is maintained at charge cutoff electricity
Position is pressed to carry out constant pressure trick charge.
10. a kind of balance charging method of lithium-ions battery packet according to claim 9, it is characterised in that: it includes
Following steps:
Step 1: battery management system controls charger and fills to battery progress high current string, until some in battery packet
The voltage full power state signal of some series unit is transmitted to electricity by series unit to voltage full power state, voltage check device
Pond management system；
Step 2: battery management system, which closes to go here and there to charge, to flow, or keeps the string of small multiplying power to charge and flow；
Step 3: battery management system opens equilibrium charging circuit, is that corresponding series unit is independent by equilibrium charging module
Charging；
Step 4: when corresponding voltage check device detects that the voltage of the series unit reaches full power state in series unit,
Battery management system is passed the signal along to, battery management system controls the corresponding equilibrium charging module stopping of the series unit and fills
Electricity or equilibrium charging module self detect the full electricity of corresponding series unit, maintain constant pressure trick charge；
Step 5: battery management system detects that the series unit of all strings reached once completely piezoelectric voltage, then is judged to charging
Terminate, exit charged state, at this moment the SOC state of every string battery is all 100%.
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| CN201910243488.3A CN110071540A (en) | 2019-03-28 | 2019-03-28 | A kind of balance charging method of lithium-ions battery packet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110880622A (en) * | 2019-10-15 | 2020-03-13 | 江西恒动新能源有限公司 | Equalization control method of battery pack |
| CN111391708A (en) * | 2020-03-26 | 2020-07-10 | 江西优特汽车技术有限公司 | Method for reducing voltage difference of equalization circuit and improving equalization efficiency |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100231166A1 (en) * | 2007-10-16 | 2010-09-16 | Sk Energy Co., Ltd. | Battery Management System with Integration of Voltage Sensor and Charge Equalizer |
| CN102709981A (en) * | 2012-06-07 | 2012-10-03 | 广州益维电动汽车有限公司 | Energy-lossless equalizing charging device for series lithium ion battery pack |
| CN103606998A (en) * | 2013-11-04 | 2014-02-26 | 江苏嘉钰新能源技术有限公司 | Cell voltage equalizing control method using dynamic reference |
| CN104734260A (en) * | 2013-12-20 | 2015-06-24 | 北京有色金属研究总院 | Power battery equalizing charge method and system |
-
2019
- 2019-03-28 CN CN201910243488.3A patent/CN110071540A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100231166A1 (en) * | 2007-10-16 | 2010-09-16 | Sk Energy Co., Ltd. | Battery Management System with Integration of Voltage Sensor and Charge Equalizer |
| CN102709981A (en) * | 2012-06-07 | 2012-10-03 | 广州益维电动汽车有限公司 | Energy-lossless equalizing charging device for series lithium ion battery pack |
| CN103606998A (en) * | 2013-11-04 | 2014-02-26 | 江苏嘉钰新能源技术有限公司 | Cell voltage equalizing control method using dynamic reference |
| CN104734260A (en) * | 2013-12-20 | 2015-06-24 | 北京有色金属研究总院 | Power battery equalizing charge method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110880622A (en) * | 2019-10-15 | 2020-03-13 | 江西恒动新能源有限公司 | Equalization control method of battery pack |
| CN111391708A (en) * | 2020-03-26 | 2020-07-10 | 江西优特汽车技术有限公司 | Method for reducing voltage difference of equalization circuit and improving equalization efficiency |
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