CN109713754A - The active equalization maintaining method of active equalization maintenance device and battery pack - Google Patents
The active equalization maintaining method of active equalization maintenance device and battery pack Download PDFInfo
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- CN109713754A CN109713754A CN201910070608.4A CN201910070608A CN109713754A CN 109713754 A CN109713754 A CN 109713754A CN 201910070608 A CN201910070608 A CN 201910070608A CN 109713754 A CN109713754 A CN 109713754A
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention discloses a kind of active equalization maintenance devices, suitable for safeguarding the battery pack of electric car, the battery pack includes several single batteries, the active equalization maintenance device includes control module, balance module and conversion module, the control module connects the balance module, the conversion module connects the balance module and the battery pack respectively, the control module obtains the voltage value of all single batteries or battery capacity value and judges whether the voltage value of the single battery or battery capacity value fall into pre-set interval, the control module sends an equalizing signal to the balance module according to judging result, the balance module controls the conversion module according to the equalizing signal and carries out charge/discharge to the single battery；The cost of active equalization maintenance device of the invention is low, it is small in size, be easy to carry about with one and equalized maintenance effectively can be carried out to single battery；The invention also discloses a kind of active equalization maintaining methods of battery pack.
Description
Technical field
The present invention relates to electric vehicle engineering fields more particularly to a kind of for safeguarding batteries of electric automobile group consistency
The active equalization method of active equalization maintenance device and battery pack.
Background technique
The equalized maintenance equipment of the power battery based on electric car of the prior art is mainly with monomer charger plan
Main, then the external independent charger of each section single battery as in power battery passes through according to the state-of-charge of battery
The software algorithm single battery few to electricity carries out charging operations to achieve the purpose that balancing battery, existing monomer charger side
Case can effectively realize the equalized maintenance function to the single battery of power battery.However, there are following for monomer charger plan
Defect:
1, each single battery needs to be separately configured independent charging equipment, continuous hair at high cost and with electric car
The single battery quantity for opening up power battery is more and more, and the quantity of charging equipment is also required to corresponding raising, undoubtedly greatly increases
To maintain equipment cost；
2, the volume of to maintain equipment increasing and increase with charging equipment quantity, is not convenient to use, does not have portability,
The moveable feature of electric car is not suitable for it, electric vehicle especially to be equalized can not focus on a place and carry out
Weighing apparatus operation, does not adapt to the changeable maintenance scene of electric car, bad adaptability.
Therefore, the active equalization maintaining method of a kind of active equalization maintenance device and battery pack is needed to solve above-mentioned ask
Topic.
Summary of the invention
The object of the present invention is to provide it is a kind of it is at low cost, small in size, be easy to carry about with one and effectively single battery can be carried out
The active equalization maintenance device of equalized maintenance
It is yet another object of the invention to provide it is a kind of it is at low cost, small in size, be easy to carry about with one and can be effectively to single battery
Carry out the active equalization maintaining method of the battery pack of equalized maintenance.
Upper purposeful in order to realize, the invention discloses a kind of active equalization maintenance devices, suitable for safeguarding electric car
Battery pack, the battery pack include several single batteries, the active equalization maintenance device include control module, balance module and
Conversion module, the control module connect the balance module, and the conversion module connects the balance module and the battery respectively
Group, the control module obtain the voltage value or battery capacity value and the voltage value for judging the single battery of all single batteries
Or whether battery capacity value falls into pre-set interval, the control module sends an equalizing signal to the equilibrium according to judging result
Module, the balance module control the conversion module according to the equalizing signal and carry out charge/discharge to the single battery.
Compared with prior art, the voltage value or battery capacity value that control module of the invention obtains all single batteries are simultaneously
Judge whether the voltage value of single battery or battery capacity value fall into pre-set interval, control module sends one according to judging result
Signal weigh to balance module, balance module carries out charge/discharge to single battery according to judging result control conversion module, only according to
By control module judge single battery whether fall into pre-set interval with by the control conversion module of balance module selectivity to need
The single battery for carrying out equalized maintenance carries out charge/discharge, sets without being equipped with independent charging for all single batteries
Standby, cost is small, small in size and be easy to carry about with one；Found out by control module and to need to carry out the single battery of equalized maintenance into
The equalized maintenance of the battery pack of entire electric car is safeguarded and completed to row, and equalized maintenance is convenient and efficient.
Preferably, the balance module includes several balanced units, the conversion module includes pressure-stabilizing constant flow unit and square
Battle array switch, the pressure-stabilizing constant flow unit are in charging-discharging structure, and the output of the pressure-stabilizing constant flow unit terminates the matrix switch, institute
Stating matrix switch includes several and the one-to-one switch unit of balanced unit, and the control termination of the switch unit is corresponding
Weigh unit, and the triggering of the switch unit terminates corresponding single battery, and it is logical that the balanced unit controls corresponding switch unit
Break to carry out charge/discharge to corresponding single battery.
Specifically, if the voltage value of the single battery or battery capacity value do not fall within the pre-set interval, note is current
Single battery is subject monomers battery and the balanced unit being correspondingly connected with the subject monomers battery is target balanced unit, institute
It states control module and obtains the battery location information of the subject monomers battery and the equilibrium locations information of the target balanced unit,
The control module sends the equalizing signal to the target according to the battery location information and the equilibrium locations information
Balanced unit, the target balanced unit control corresponding switch unit on-off to the target list according to the equalizing signal
Body battery carries out charge/discharge.
More specifically, the endpoint value of the pre-set interval is respectively minimum preset value and maximum preset value, the balanced letter
Number include charging signals and discharge signal, if the voltage value of the subject monomers battery or battery capacity value be less than it is described minimum pre-
If value, then the control module sends the charging signals to the target balanced unit, and the target balanced unit is according to institute
It states charging signals and controls corresponding switch unit closure to charge to the subject monomers battery, until the subject monomers
The voltage value or battery capacity value of battery fall into the pre-set interval；If the voltage value or battery capacity of the subject monomers battery
Value is greater than the maximum preset value, then the control module sends the discharge signal to the target balanced unit, the mesh
Balanced unit is marked to be closed according to the corresponding switch unit of discharge signal control to discharge to the subject monomers battery,
Until the voltage value or battery capacity value of the subject monomers battery fall into the pre-set interval.
Preferably, the active equalization maintenance device further includes power module, the input of the power module terminates external
Power supply, the control of the power module terminate the control module, and the output of the power module terminates the pressure-stabilizing constant flow list
The input terminal of member.
Preferably, the pressure-stabilizing constant flow unit includes charging circuit for charging to single battery and for list
The discharge circuit that body battery discharges, the charging circuit are mutually indepedent and non-interference with the charging circuit.
Preferably, the active equalization maintenance device further includes acquisition module, described in the acquisition termination of the acquisition module
The signal of battery pack, the acquisition module terminates the control module, and the acquisition module acquires the voltage of all single batteries
Value or battery capacity value are simultaneously sent to the control module.
Preferably, the active equalization maintenance device further includes wireless communication module, the wireless communication module electrical connection
The control module, the control module are communicated by the wireless communication module with external equipment.
Correspondingly, the invention also discloses a kind of active equalization maintaining methods of battery pack, are suitable for electric car, described
Battery pack includes several single batteries comprising following steps:
(1) voltage value or battery capacity value of all single batteries are obtained；
(2) whether the voltage value or battery capacity value for judging the single battery fall into pre-set interval；
(3) if the voltage value of the single battery or battery capacity value do not fall within pre-set interval, to current monolithic battery
Charge/discharge is carried out, until the voltage value of current monolithic battery or battery capacity value fall into pre-set interval；
(4) it repeats the above steps, until the voltage value of all single batteries or battery capacity value fall into the pre-set interval.
Preferably, step (3) further comprises:
The respectively minimum preset value of the endpoint value of the pre-set interval and maximum preset value,
If the voltage value or battery capacity value of current monolithic battery are less than the minimum preset value, to current monolithic battery
It charges, until the voltage value of current monolithic battery or battery capacity value fall into pre-set interval；
If the voltage value or battery capacity value of the subject monomers battery are greater than the maximum preset value, to the target
Single battery discharges, until the voltage value of current monolithic battery or battery capacity value fall into pre-set interval.
Detailed description of the invention
Fig. 1 is the connection block diagram of active equalization maintenance device of the invention.
Fig. 2 is the connection block diagram of conversion module and balance module, battery pack and power module of the invention.
Fig. 3 is the execution flow chart of the active equalization maintaining method of battery pack of the invention.
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is cooperated to be explained in detail.
Refering to Figure 1, active equalization maintenance device 100 of the invention, suitable for safeguarding the battery pack 1 of electric car,
Battery pack 1 includes several single batteries 101, and active equalization maintenance device 100 includes control module 10, balance module 20 and conversion
Module 30.Wherein, control module 10 connects balance module 20, and conversion module 30 connects balance module 20 and battery pack 1 respectively, controls mould
Block 10 obtain all single batteries 101 voltage value or battery capacity value and judge single battery 101 voltage value or battery hold
Whether magnitude falls into pre-set interval, and control module 10 sends an equalizing signal to balance module 20, equilibrium model according to judging result
Block 20 carries out charge/discharge to single battery 101 according to equalizing signal control conversion module 30.The voltage value of single battery 101
Or battery capacity value is to measure the two indices of the state of single battery 101, the present embodiment is by obtaining all single batteries 101
One of two indices, and judge whether single battery 101 needs to carry out equalized maintenance, of course, it is possible to obtain all lists simultaneously
The voltage value and battery capacity value of body battery 101 are to judge whether single battery 101 needs to be serviced, and this will not be repeated here.
During equalized maintenance, when multiple single batteries 101 in battery pack 1 are required to be safeguarded, balance module
20 successively can carry out charge/discharge to the single battery 101 for needing equalized maintenance by conversion module 30, can also be right simultaneously
Multiple or whole single batteries 101 for needing equalized maintenance carries out charge/discharge, and specific execute can pass through control module 10
It realizes.
It please refers to shown in Fig. 1 and Fig. 2, balance module 20 includes several balanced units 21, and conversion module 30 includes that pressure stabilizing is permanent
Flow unit 31 and matrix switch 32.Wherein, pressure-stabilizing constant flow unit 31 is in charging-discharging structure, it is preferable that the charging-discharging structure includes
Charging circuit 311 for charging to single battery 101 and the discharge circuit for discharging single battery 101
312, charging circuit 311 is mutually indepedent and non-interference with charging circuit 312, enable conversion module 30 concurrently and independently
Charging operations and discharge operation are carried out to different single batteries 101.The output of pressure-stabilizing constant flow unit 31 terminates matrix switch 32,
Matrix switch 32 includes several and one-to-one switch unit 321 of balanced unit 21, and the control of switch unit 321, which terminates, to be corresponded to
Balanced unit 21, the triggering of switch unit 321 terminates corresponding single battery 101, and balanced unit 21 controls corresponding switch
321 on-off of unit is to carry out charge/discharge to corresponding single battery 101.
Wherein, if the voltage value of single battery 101 or battery capacity value do not fall within pre-set interval, remember current monolithic battery
101 be subject monomers battery 101 and the balanced unit being correspondingly connected with subject monomers battery 101 21 is target balanced unit 21,
Control module 10 obtains the battery location information of subject monomers battery 101 and the equilibrium locations information of target balanced unit 21, control
Molding block 10 sends equalizing signal to target balanced unit 21 according to battery location information and equilibrium locations information, and target is balanced single
Member 21 controls corresponding 321 on-off of switch unit according to the equalizing signal to carry out charge/discharge to subject monomers battery 101.
The balance module 20 of the present embodiment includes four balanced units 21, and each balanced unit 21 is exported with 14 tunnels,
Each balanced unit 21 can manage 14 single batteries 101 simultaneously, i.e. the balance module 20 of the present embodiment is at best able to together
When 56 single batteries 101 are safeguarded, can satisfy the primary demand of electric car on the market, it is certainly, balanced
The quantity of unit 21 can flexible setting according to the actual situation, such as two, three, four, five or six, different number
Balance module 20 can handle the single battery 101 of different number simultaneously, not be defined herein to the quantity of balanced unit 21.
In actual use, in the balanced unit 21 that control module 10 is fully integrated therein, so that the balanced unit 21 is used as main equilibrium
Unit 21 uses, remaining balanced unit is used as from balanced unit 21 and uses.
Further, the endpoint value of pre-set interval is respectively minimum preset value and maximum preset value, and equalizing signal includes filling
Electric signal and discharge signal control mould if the voltage value of subject monomers battery 101 or battery capacity value are less than minimum preset value
Block 10 sends charging signals to target balanced unit 21, and target balanced unit 21 controls corresponding switch unit according to charging signals
321 closures are to charge to subject monomers battery 101, until the voltage value of subject monomers battery 101 or battery capacity value are fallen
Enter pre-set interval；If the voltage value or battery capacity value of subject monomers battery 101 are greater than maximum preset value, control module 10 is sent out
Electric signal veer away to target balanced unit 21, target balanced unit 21 controls corresponding switch unit 321 according to discharge signal and closes
Close to discharge subject monomers battery 101, until subject monomers battery 101 voltage value or battery capacity value fall into it is default
Section.It should be noted that above-mentioned charging signals/discharge signal includes charge information/discharge information of corresponding single battery,
Charge information/discharge information is not limited only to the voltage value or current value that the single battery needs charge/discharge.
By taking the voltage value of single battery 101 as an example, in practical operation, since the standard voltage value of single battery 101 is
3.6V, and the normal working voltage of single battery 101 maintains and is able to satisfy normal use demand between 3.2V-4.0V.Cause
This, is set as 3.2V for minimum preset value, and maximum preset value is set as 4.0V, if the then voltage value or battery of subject monomers battery 101
Capability value is less than 3.2V, then control module 10 sends charging signals to target balanced unit 21, and target balanced unit 21 is according to filling
Electric signal controls the corresponding closure of switch unit 321 to charge to subject monomers battery 101, until subject monomers battery
101 voltage value or battery capacity value between 3.2V-4.0V, it is, of course, preferable to, can set charging until subject monomers electricity
The voltage value in pond 101 is standard voltage value 3.6V, with optimum target single battery 101；If the voltage of subject monomers battery 101
Value or battery capacity value are greater than 4.0V, then control module 10 sends discharge signal to target balanced unit 21, target balanced unit
21 control the corresponding closure of switch unit 321 to discharge subject monomers battery 101, until target list according to discharge signal
The voltage value or battery capacity value of body battery 101 between 3.2V-4.0V, it is, of course, preferable to, electric discharge can be set until target
The voltage value of single battery 101 is standard voltage value 3.6V, with optimum target single battery 101.In fact, for entire electricity
For pond group 1, there are certain errors for the charging of single battery 101, discharge operation, and therefore, control module 10 can be entire balanced
It obtains the voltage value or battery capacity value of all single batteries 101 in real time in the process, repeatedly equilibrium is carried out, until all monomers
Voltage value or battery capacity value of the battery 101 after in stable condition are between 3.2V-4.0V, to be finally completed entire battery pack 1
Active equalization operation.
It please refers to shown in Fig. 1 and Fig. 2, active equalization maintenance device 100 of the invention further includes power module 40, acquisition mould
Block 50 and wireless communication module 60, the input of power module 40 terminate external power supply, the control termination control mould of power module 40
Block 10, the input terminal of the output termination pressure-stabilizing constant flow unit 31 of power module 40, to provide starting electricity for pressure-stabilizing constant flow unit 31
Stream and charging current.Power module 40 can be directly connected to alternating current, can also be by mobile power sources such as batteries to active equalization
Maintenance device 100 is powered.The acquisition of acquisition module 50 terminates battery pack 1, and the signal of acquisition module 50 terminates control module
10, acquisition module 50 acquires the voltage value of all single batteries 101 or battery capacity value and is sent to control module 10, for control
Molding block 10 carries out calculating judgement.The collection terminal of acquisition module 50 has multiple acquisition probes with all single batteries of independent acquisition
101 voltage value or battery capacity value.Wireless communication module 60 is electrically connected control module 10, and control module 10 passes through wireless telecommunications
Module 60 is communicated with external equipment.The wireless communication module 60 can be WIFI wireless communication module 60, bluetooth channel radio
Interrogate module 60, the active equalization maintenance device 100 of the present embodiment can by wireless communication module 60 directly with such as mobile phone
Equal host computers and control module 10 carry out real-time communication, and can carry out parameter setting to control module 10 by host computer, can also
To pass through the running parameter of host computer real time inspection active equalization maintenance device 100, avoid traditional equalizing equipment because external aobvious
Display screen and increase volume and manufacturing cost.
It please refers to shown in Fig. 1-Fig. 3, correspondingly, the invention also discloses a kind of active equalization maintenance sides of battery pack 1
Method, is suitable for electric car, and the battery pack 1 includes several single batteries 101 comprising following steps:
S1, the voltage value or battery capacity value for obtaining all single batteries 101；
S2, judge whether the voltage value of the single battery 101 or battery capacity value fall into pre-set interval；
If S3, the voltage value of the single battery 101 or battery capacity value do not fall within pre-set interval, to current monolithic electricity
Pond 101 carries out charge/discharge, until the voltage value of current monolithic battery 101 or battery capacity value fall into pre-set interval；
S4, it repeats the above steps, until the voltage value of all single batteries 101 or battery capacity value fall into the preset areas
Between.
Preferably, step S3 further comprises:
The respectively minimum preset value of the endpoint value of the pre-set interval and maximum preset value,
If the voltage value or battery capacity value of current monolithic battery 101 are less than the minimum preset value, to current monolithic
Battery 101 charges, until the voltage value of current monolithic battery 101 or battery capacity value fall into pre-set interval；
If the voltage value or battery capacity value of the subject monomers battery 101 are greater than the maximum preset value, to described
Subject monomers battery 101 discharges, until the voltage value of current monolithic battery 101 or battery capacity value fall into pre-set interval.
In conjunction with shown in Fig. 1-Fig. 3, control module 10 of the invention obtains the voltage value or battery of all single batteries 101
Capability value simultaneously judges whether the voltage value of single battery 101 or battery capacity value fall into pre-set interval, and control module 10 is according to sentencing
Disconnected result sends an equalizing signal to balance module 20, and balance module 20 is according to judging result control conversion module 30 to monomer electricity
Pond 101 carries out charge/discharge, only relies on control module 10 and judges whether single battery 101 falls into pre-set interval to pass through equilibrium
30 pairs of conversion module of the control single batteries 101 for needing to carry out equalized maintenance of 20 selectivity of module carry out charge/discharge,
Without being equipped with independent charging equipment for all single batteries 101, cost is small, small in size and be easy to carry about with one；By controlling mould
Block 10 is found out and to the battery pack 1 for needing the single battery for carrying out equalized maintenance 101 to be safeguarded and completed entire electric car
Equalized maintenance, equalized maintenance is convenient and efficiently.
The above disclosure is only a preferred embodiment of the invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.
Claims (10)
1. a kind of active equalization maintenance device, suitable for safeguarding that the battery pack of electric car, the battery pack include several monomer electricity
Pond, which is characterized in that the active equalization maintenance device includes control module, balance module and conversion module, the control mould
Block connects the balance module, and the conversion module connects the balance module and the battery pack respectively, and the control module obtains
The voltage value or battery capacity value of all single batteries simultaneously judge whether the voltage value of the single battery or battery capacity value fall
Enter pre-set interval, the control module sends an equalizing signal to the balance module, the balance module according to judging result
The conversion module is controlled according to the equalizing signal, and charge/discharge is carried out to the single battery.
2. active equalization maintenance device as described in claim 1, which is characterized in that the balance module includes several balanced single
Member, the conversion module include pressure-stabilizing constant flow unit and matrix switch, and the pressure-stabilizing constant flow unit is in charging-discharging structure, described steady
The output of constant current unit is pressed to terminate the matrix switch, the matrix switch includes several switching correspondingly with balanced unit
Unit, the control of the switch unit terminate corresponding balanced unit, and the triggering of the switch unit terminates corresponding monomer electricity
Pond, the balanced unit control corresponding switch unit on-off to carry out charge/discharge to corresponding single battery.
3. active equalization maintenance device as claimed in claim 2, which is characterized in that if the voltage value or electricity of the single battery
Pool capacity magnitude does not fall within the pre-set interval, then remember current monolithic battery be subject monomers battery and with the subject monomers battery
The balanced unit being correspondingly connected with is target balanced unit, and the control module obtains the battery location letter of the subject monomers battery
The equilibrium locations information of breath and the target balanced unit, the control module is according to the battery location information and the equilibrium
Location information sends the equalizing signal to the target balanced unit, and the target balanced unit is according to the equalizing signal control
Corresponding switch unit on-off is made to carry out charge/discharge to the subject monomers battery.
4. active equalization maintenance device as claimed in claim 3, which is characterized in that the endpoint value of the pre-set interval is respectively
Minimum preset value and maximum preset value, the equalizing signal includes charging signals and discharge signal, if the subject monomers battery
Voltage value or battery capacity value be less than the minimum preset value, then the control module sends the charging signals to the mesh
Balanced unit is marked, the target balanced unit controls corresponding switch unit closure to the target according to the charging signals
Single battery charges, until the voltage value of the subject monomers battery or battery capacity value fall into the pre-set interval；If
The voltage value or battery capacity value of the subject monomers battery are greater than the maximum preset value, then described in the control module transmission
Discharge signal to the target balanced unit, the target balanced unit controls corresponding switch unit according to the discharge signal
Closure is to discharge to the subject monomers battery, until the voltage value of the subject monomers battery or battery capacity value are fallen into
The pre-set interval.
5. active equalization maintenance device as claimed in claim 2, which is characterized in that the active equalization maintenance device further includes
Power module, the input of the power module terminate external power supply, and the control of the power module terminates the control module, institute
The output for stating power module terminates the input terminal of the pressure-stabilizing constant flow unit.
6. active equalization maintenance device as claimed in claim 2, which is characterized in that the pressure-stabilizing constant flow unit include for pair
The charging circuit that single battery charges and the discharge circuit for discharging single battery, the charging circuit and institute
It is mutually indepedent and non-interference to state charging circuit.
7. active equalization maintenance device as described in claim 1, which is characterized in that the active equalization maintenance device further includes
Acquisition module, the acquisition of the acquisition module terminate the battery pack, and the signal of the acquisition module terminates the control module,
The acquisition module acquires the voltage value of all single batteries or battery capacity value and is sent to the control module.
8. active equalization maintenance device as described in claim 1, which is characterized in that the active equalization maintenance device further includes
Wireless communication module, the wireless communication module are electrically connected the control module, and the control module passes through the wireless telecommunications
Module is communicated with external equipment.
9. a kind of active equalization maintaining method of battery pack is suitable for electric car, the battery pack includes several single batteries,
It is characterized by comprising the following steps:
(1) voltage value or battery capacity value of all single batteries are obtained；
(2) whether the voltage value or battery capacity value for judging the single battery fall into pre-set interval；
(3) if the voltage value of the single battery or battery capacity value do not fall within pre-set interval, current monolithic battery is carried out
Charge/discharge, until the voltage value of current monolithic battery or battery capacity value fall into pre-set interval；
(4) it repeats the above steps, until the voltage value of all single batteries or battery capacity value fall into the pre-set interval.
10. the active equalization maintaining method of battery pack as claimed in claim 9, which is characterized in that step (3) is further wrapped
It includes:
The respectively minimum preset value of the endpoint value of the pre-set interval and maximum preset value,
If the voltage value or battery capacity value of current monolithic battery are less than the minimum preset value, current monolithic battery is carried out
Charging, until the voltage value of current monolithic battery or battery capacity value fall into pre-set interval；
If the voltage value or battery capacity value of the subject monomers battery are greater than the maximum preset value, to the subject monomers
Battery discharges, until the voltage value of current monolithic battery or battery capacity value fall into pre-set interval.
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| CN110190651A (en) * | 2019-06-19 | 2019-08-30 | 南京中感微电子有限公司 | A kind of multi-threshold electric quantity balancing method and system of battery pack |
| CN113162172A (en) * | 2021-04-22 | 2021-07-23 | 国网广汇(上海)电动汽车服务有限公司 | Method and equipment for balancing batteries of electric vehicle |
| CN113183828A (en) * | 2021-04-29 | 2021-07-30 | 爱驰汽车有限公司 | Equalization method and equalization device for battery module |
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Application publication date: 20190503 |