CN109786863A - A kind of lithium battery group balance of voltage repairs circuit and restorative procedure - Google Patents
A kind of lithium battery group balance of voltage repairs circuit and restorative procedure Download PDFInfo
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- CN109786863A CN109786863A CN201711113631.4A CN201711113631A CN109786863A CN 109786863 A CN109786863 A CN 109786863A CN 201711113631 A CN201711113631 A CN 201711113631A CN 109786863 A CN109786863 A CN 109786863A
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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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Abstract
The invention discloses a kind of lithium battery group balances of voltage to repair circuit and restorative procedure, including a main control MCU unit, and main control MCU unit connects a digital display screen, operational and controlled key button, radiator fan.Main control MCU unit is connected with the total voltage measuring circuit and list string battery core tension measuring circuit of battery pack, total voltage measuring circuit is connected with total voltage measurement switching circuit, total voltage measuring circuit is connected with total electric discharge interface, total electric discharge interface connection battery pack, voltage gear switching circuit and discharge resistance, discharge resistance connect total discharge circuit.Single string battery core tension measuring circuit is connected with multicircuit relay switching circuit, and each relay is parallel with a single string battery core discharge circuit.Every string discharge circuit is all connected with a low-voltage detection circuit, and low-voltage detection circuit and single string electric discharge Lu Douyou are connected to cable socket interface.By cable socket interface and the thread plug of battery pack to slotting connection, discharge off and then it is balanced charging and realizes that balance is repaired.
Description
Technical field
The present invention relates to lithium battery group interlock circuit technical fields, more particularly to a kind of lithium battery group balance of voltage reparation
Circuit and restorative procedure.
Background technique
Lithium battery group is all as going here and there battery core by made of series connection and parallel combination, very to the coherence request of battery core more
Height, although the pairing of battery core has been done by manufacturer, lithium battery group can all generate every string battery during prolonged use
Voltage it is inconsistent, will affect the charging and discharging ability of battery pack entirety, cause the energy to the output of battery pack that can decline,
To also influence the service life of battery pack.The maintenance method of lithium battery group pressure difference on the market is all using DC power supply to electricity
The battery core forced down plugs in, and such reparation is relatively time-consuming to take manually, and precision is also difficult to control, or directly replaces voltage value
With capacity all as battery core recombinant, the method for maintenance is all more complicated.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the present invention provides a kind of lithium battery group balance of voltage repair circuit and
Restorative procedure can be in the feelings for not dismantling and replacing core strueture to because of the lithium battery group that electrical property declines caused by battery core pressure difference
High Precision Automatic reparation pressure difference under condition, repair process is time saving and energy saving, does not need excessive human intervention.
The technical scheme adopted by the invention is that: a kind of lithium battery group balance of voltage reparation circuit, characterized in that it includes
One main control MCU unit, main control MCU unit connect a digital display screen, operational and controlled key button, radiator fan.The main control MCU unit
It is connected with the total voltage measuring circuit of battery pack, total voltage measuring circuit is connected with total voltage measurement switching circuit, and total voltage is surveyed
Amount circuit connection has total electric discharge interface, total discharge interface connection battery pack, voltage gear switching circuit and discharge resistance, electric discharge electricity
Resistance connects total discharge circuit, and total discharge circuit is connected with the first optocoupler control circuit, and the first optocoupler control circuit connects main control MCU
Unit.
The main control MCU unit connects multiple relay switching circuits, and corresponding each relay switching circuit is connected with one
String battery core discharge circuit, each single string battery core discharge circuit are connected with low-voltage detection circuit, and low-voltage detection circuit is connected with
Cable socket interface, the battery pack of the more string battery core compositions of cable socket interface connection.
Each single string battery core discharge circuit connects start and stop driving circuit, and start and stop driving circuit connects the control of the second optocoupler
Circuit, the second optocoupler control circuit connect main control MCU unit.
The low-voltage detection circuit is connected with single string battery core electric discharge and completes feed circuit, total electric discharge Voltage Feedback electricity
Road, and feed circuit is completed in single string battery core electric discharge, total electric discharge voltage feedback circuit connects the second optocoupler control circuit.
Each relay switching circuit is connected with charging circuit, and charging circuit connects power circuit, single string battery core electricity
Press measuring circuit, single battery core tension measuring circuit of going here and there connects each relay switching circuit, and relay switching circuit switches to pair
Every a string of battery cores charging.
The lithium battery group balance of voltage recited above repairs the restorative procedure of circuit, comprising the following steps:
Step 1: circuit is repaired in operational and controlled key button starting, carries out assembled battery total voltage electric discharge, discharge current is according to battery capacity size
It is adjusted, by voltage gear switching circuit, is divided into five electric current gear 2A, 4A, 6A, 8A, 10A current discharges；
Step 2: the low-voltage detection circuit of each single string battery core connection detects the voltage of each single string battery core, when step 1 electricity
In the group total voltage discharge process of pond, when voltage is lower than protection value after certain a string of battery core electric discharge of low-voltage detection circuit detection, then
Step 1 is automatically stopped the electric discharge of whole group battery pack, enters step three single string battery core discharge in parallel；
Step 3: each single string battery core for forming battery pack is connected by cable socket interface, and each single string battery core has correspondence
Single string battery core discharge circuit, corresponding each single string battery core discharge circuit are connected with low-voltage detection circuit, the control of main control MCU unit
The single string battery core discharge circuit of starting, when certain a string of battery core is first discharged to under-voltage protection value, i.e. string battery core electric discharge is automatically stopped,
Other single string battery core discharge circuits continue to discharge, until whole battery cores are discharged to under-voltage protection value, pass through low voltage test
Circuit, the single string battery core discharge in parallel of the second optocoupler control circuit connection main control MCU unit output are completed, and are filled subsequently into step 4
Circuit；
Step 4: charging circuit starting, relay switching circuit, which switches to, charges to each single string battery core, main control MCU list
Member finds maximum voltage value in battery pack by single string battery core tension measuring circuit measurement, and the maximum voltage value is as other battery cores
The low battery core of other voltages is charged to voltage reference value automatically by the voltage reference value of charging；
Step 5: it completes battery voltage balance and repairs, digital display screen or auditory tone cues are fed back to by main control MCU unit.
A kind of lithium battery group balance of voltage of the present invention repairs circuit, and main innovation includes its repair mode, using first to electricity
Pond group is integrally discharged, and discharge current can be adjusted according to battery capacity size, be divided into 5 electric current gear 2A, 4A, 6A, 8A,
10A, the big battery of capacity then can choose maximum 10A current discharge, allow battery that electricity is bled off as soon as possible；During discharge
Whole group electric discharge is then automatically stopped when the voltage of certain string battery core is worth as low as protection, at this point, the battery core voltage of other strings may also very
Height is unfavorable for balance and repairs, and circuit system can be automatically into single serial parallel discharge mode.It discharge off and then is balanced
Charging, in the case where not dismantling and replacing core strueture, High Precision Automatic reparation pressure difference, repair process always discharge -- voltage inspection
-- single serial parallel electric discharge -- voltage detecting -- battery core charging, repair process is time saving and energy saving, does not need excessive human intervention, also for survey
The case where battery pack is damaged either with or without rosin joint or battery core can be artificially judged by the method always discharged.
Detailed description of the invention
Fig. 1 is schematic block circuit diagram of the invention.
Fig. 2 is main control MCU element circuit structure chart.
Fig. 3 is total voltage measuring circuit and total voltage measurement switching circuit structure diagram.
Fig. 4 is that the 14-16 string battery core for going here and there batteries for 16 corresponds to relay switching charge-discharge circuit structure chart.
Fig. 5 is total discharge voltage gear switch circuit structure diagram.
Fig. 6 is total discharge circuit structure chart.
Fig. 7 is the 1-3 string battery core discharge in parallel circuit structure diagram of single string battery core discharge in parallel circuit.
Specific embodiment
Illustrate the present invention below in conjunction with drawings and concrete examples, illustrative example here is only used for clearer solution
The present invention is released, and is limited not as to application of the invention.
Attached drawing 1, as schematic block circuit diagram of the invention, a kind of lithium battery group balance of voltage reparation circuit, including one
Main control MCU unit, main control MCU unit connect a digital display screen, operational and controlled key button, radiator fan.Main control MCU unit is connected with electricity
The total voltage measuring circuit of pond group, total voltage measuring circuit are connected with total voltage measurement switching circuit, and total voltage measuring circuit connects
It is connected to total electric discharge interface, total interface that discharges connects battery pack, voltage gear switching circuit and discharge resistance, and discharge resistance connection is total
Discharge circuit, total discharge circuit are connected with the first optocoupler control circuit, and the first optocoupler control circuit connects main control MCU unit.
The main control MCU unit connects multiple relay switching circuits, and corresponding each relay switching circuit is connected with one
String battery core discharge circuit, each single string battery core discharge circuit are connected with low-voltage detection circuit, and low-voltage detection circuit is connected with
Cable socket interface, the battery pack of the more string battery core compositions of cable socket interface connection.
Each single string battery core discharge circuit connects start and stop driving circuit, and start and stop driving circuit connects the control of the second optocoupler
Circuit, the second optocoupler control circuit connect main control MCU unit.
The low-voltage detection circuit is connected with single string battery core electric discharge and completes feed circuit, total electric discharge Voltage Feedback electricity
Road, and feed circuit is completed in single string battery core electric discharge, total electric discharge voltage feedback circuit connects the second optocoupler control circuit.
Each relay switching circuit is connected with charging circuit, and charging circuit connects power circuit, single string battery core electricity
Press measuring circuit, single battery core tension measuring circuit of going here and there connects each relay switching circuit, and relay switching circuit switches to pair
Every a string of battery cores charging.
The restorative procedure of the reparation circuit of the lithium battery group balance of voltage described in the present embodiment, comprising the following steps:
Step 1: circuit is repaired in operational and controlled key button starting, carries out assembled battery total voltage electric discharge, discharge current is according to battery capacity size
It is adjusted, by voltage gear switching circuit, is divided into five electric current gear 2A, 4A, 6A, 8A, 10A current discharges；
Step 2: the low spot of each single string battery core connection presses detection circuit, the voltage of each single string battery core is detected, when step 1 electricity
In the group total voltage discharge process of pond, when voltage is lower than pressure protection value after certain a string of battery core electric discharge of low-voltage detection circuit detection,
Then step 1 is automatically stopped the electric discharge of whole group battery pack, enters step three single string battery core discharge in parallel；
Step 3: each single string battery core for forming battery pack is connected by cable socket interface, and each single string battery core has correspondence
Single string battery core discharge circuit, corresponding each single string battery core discharge circuit are connected with low-voltage detection circuit, the control of main control MCU unit
The single string battery core discharge circuit of starting, when certain a string of battery core is first discharged to under-voltage protection value, i.e. string battery core electric discharge is automatically stopped,
Other single string battery core discharge circuits continue to discharge, until whole battery cores are discharged to under-voltage protection value, pass through low voltage test
Circuit, the single string battery core discharge in parallel of the second optocoupler control circuit connection main control MCU unit output are completed, and are filled subsequently into step 4
Circuit；
Step 4: charging circuit starting, relay switching circuit, which switches to, charges to each single string battery core, main control MCU list
Member finds maximum voltage value in battery pack by single string battery core tension measuring circuit measurement, and the maximum voltage value is as other battery cores
The low battery core of other voltages is charged to voltage reference value automatically by the voltage reference value of charging；
Step 5: it completes battery voltage balance and repairs, digital display screen or auditory tone cues are fed back to by main control MCU unit.
It is to combine particular circuit configurations figure as the circuit structure of the present embodiment to disclose embodiment below.
Please refer to attached drawing 2, main control MCU element circuit structure described in the present embodiment, attached drawing 3 be total voltage measuring circuit and
Total voltage measurement switching circuit, capacitor C57 pin is connected respectively to the common pin 7 of relay, 8 feet in figure, and normally closed pin 3 connects
To the ground wire of discharge circuit, normally closed pin 4 is connected to total voltage input terminal by resistance R333, and when static, voltage can pass through R333
It charges to C57；Normally opened pin 1 is connected to the ground wire of MCU, and 2 feet are connected to sample circuit R329, VR1, R330 of voltage measurement, when after
When electric appliance is attracted, 3,4 foot contacts of relay are disconnected, and 7 feet and 1 foot are connected, and 8 feet and 2 feet are connected, and capacitor C57 is to sample circuit
The signal of sampling is input to MCU and reads data by electric discharge, circuit P16.
Relay, which is corresponded to, for the 14-16 string battery core for 16 string batteries as shown in Fig. 4 switches charge-discharge circuit structure,
Voltage gear selection is since discharge range is wider, and voltage is from 12V-60V, electric current from 2A-10A, in order to avoid wink when electric discharge
Between electric current is excessive burns out part, so being provided with multiple discharge loads, main control MCU unit selects corresponding shelves according to the height of voltage
The load discharge of position.This equipment shares the circuit unit of 5 gears, 5 gear corresponding voltage ranks are 12V, 24V, 36V,
48V,60V.J17, J18, J19, J20, J21 are the relay of gear selection in figure, and Q110, Q111, Q112, Q113, Q114 are
The triode of relay is driven, the base stage of triode passes through resistance R310, R311, R312, R313, R314 respectively and is connected to MCU
Respective pin；VCC is voltage input end, the 2nd foot of 5 relays is separately connected, since discharge load is connected to relay
Normally opened the 5th foot of pin, so VCC is not connect with load under normality, only MCU first obtains voltage parameter and makees after judging,
Output phase answers the control signal of gear that relay is attracted again, and VCC connection load is discharged by discharge circuit.
Total discharge voltage gear switch circuit structure as shown in Fig. 5, since the ground wire of total discharge circuit cannot be with master control
The ground wire of MCU unit mainboard communicates, so making isolation control using U36 optocoupler, the pulse signal of MCU output is through R367 to U36
1,2 feet, signal passes through interior lights electric coupling, 3 feet of the identical signal of 15 foot output duty cycles of U36 to comparator U35-A,
When the level of 3 foot of comparator then 1 foot higher than 2 feet exports higher level pulse signal, Q115 is connected at this time, RL1 connection load
Resistance, discharge current constitute circuit by Q115, R315, R317, and electric current forms sampling electricity at R315, R317 parallel resistance both ends
Pressure value, this voltage amplitude very little will amplify by U35-B, and the signal of amplification becomes direct current by D139, C62 filtering processing
Flat, level amplifies using Q117 emitter following, is input to the 5th foot of U36 by R324 current-limiting resistance, by optocoupler linearly coupling it
Afterwards, the 11st foot of U36 exports the voltage value with input linear variation to MCU, then is adjusted by the duty ratio size of MCU control output
Discharge current.
The power supply of circuit is taken from the voltage of battery pack, by giving the circuit to power after reduction voltage circuit pressure stabilizing, in circuit
The effect of 3 feet of R325 connection power supply to U36 are upper electro-detections, just have electric current to pass through when battery connects, the 13rd foot of U36 is just
There is high level signal to export and obtains the circuit measuring voltage that signal just opens winged capacitor to MCU, MCU.
As shown in Fig. 6 it is total discharge circuit structure chart, since the current potential height of every string battery core over the ground is all different, measures
The voltage of every string battery core or charging out, it is desirable to special point-to-point switching circuit is connected to the positive and negative anodes of every string battery core,
Circuit switching is done using relay in this case, corresponding a string of the battery cores of each relay are just measured when the relay of which string is attracted
Or the battery core for which string that charges.
Attached drawing 6 is explained with 14-16 string switching circuit, and J14, J15, J16 are relay, and Q14, Q15, Q16 are to drive
The triode of motor type relay work, by resistance R14, R15, R16, pin corresponding with MCU connects the base stage of triode respectively,
The effect of diode D14, D15, D16 are to absorb back emf pulse.Circuit F7, B14, F8, B16 be connected respectively to the 14th, 15,
The cable socket circuit of 16 string battery cores, i.e. F7 and B14 are connected to the 14th string battery core of battery pack, B14 by battery cable socket
It is connected to the 15th string battery core with F8, F8 and B16 are connected to the 16th string battery core.1 foot of all relays, which links together, is connected to master
The ground wire of plate, 2 feet, which also link together, to be connected on the circuit of DC3.7, and DC3.7 connects two parts circuit: one is attached to voltage
Sample circuit R29, VR2, R30 of measurement, sampled value are transmitted to MCU through oversampling circuit P15 and read data；Two are attached to charging electricity
Road will be charged by this circuit to the battery core for needing to charge when repairing battery core pressure difference.Since the 1 of relay, 2 feet are normally opened
Pin, thus every string battery core with 1,2 be it is disconnected, be only attracted Shi Caiyu battery core positive and negative anodes in relay and connect.
Attached drawing 7 is single string battery core discharge in parallel circuit, is made with the 1st, 2 string battery core discharge circuits of single serial parallel discharge circuit
To illustrate, the circuit in figure between B1 and ground wire is the 1st string battery core discharge circuit, and the circuit between B2 and B1 is that the 2nd string is electric
Core discharge circuit, B1 connect the anode of the 1st string battery core, and B2 connects the anode of the 2nd string battery core, and B1 is cathode relative to B2, successively mode
It is superimposed every string location circuit, until to the 16th string.
1-16 string discharge cell circuit theory be it is identical, herein with the 1st string circuit explain.Q21,R36,R37,
Q22, R40, C8, D21, R41, R38, D19 constitute the open and close circuit of closed loop, and effect is individually to lock the work of the discharge circuit
State is not influenced by other element circuits；BQ1 connection electric discharge starting control circuit, as long as moment low level can open this
Circuit；BT1 connection stops the control circuit discharging, and (stop signal has two aspects: first is that the stop signal of manual operation, another party
Face is the signal that low-voltage protection circuit issues), when the level of BT1 is pulled low, Q22 stops conducting, causes Q21 also to stop defeated
Out, discharge circuit just stopped work.
BD1 connection is discharged LED light, and LED is lighted when electric discharge；BL1 connection electric discharge feed circuit, discharge Shi Weigao
Level output is then low level after being discharged.
R34, D18, U2-A, R32, Q20, C7, C33, Q19, R39 constitute the circuit of constant-current discharge in Fig. 7.D181 is U2-A
3 feet provide reference voltage, R39 is current sampling resistor, and Q20 provides enough bias currents for Q19, Q19 is connected linearly,
The electric current of output generates pressure drop when passing through sampling resistor R39, and comparator U2-A makes comparisons sampled voltage with reference voltage, automatically
The voltage value for adjusting the output of 1 foot of comparator is constant to control discharge current.
The implementation of technology through the invention is realized to lithium battery group balance of voltage reparation, can not dismantle and replace electricity
High Precision Automatic reparation pressure difference, repair process always discharge in the case where cored structure -- voltage detecting -- single serial parallel electric discharge -- voltage
Detection -- battery core equilibrium charging, repair process is time saving and energy saving, does not need excessive human intervention, can also be done by what is always discharged
Method artificially judges the case where battery pack is damaged either with or without rosin joint or battery core.
The above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be to the present invention
Embodiment restriction.And still belong to for belonging to the obvious changes or variations that connotation of the invention is extended out
In protection scope of the present invention.
Claims (2)
1. a kind of lithium battery group balance of voltage repairs circuit characterized by comprising
One main control MCU unit, main control MCU unit connect a digital display screen, operational and controlled key button, radiator fan；
The main control MCU unit is connected with the total voltage measuring circuit of battery pack, and total voltage measuring circuit is connected with total voltage survey
Switching circuit is measured, total voltage measuring circuit is connected with total electric discharge interface, total interface connection battery pack of discharging, voltage gear switch electricity
Road and discharge resistance, discharge resistance connect total discharge circuit, and total discharge circuit is connected with the first optocoupler control circuit, the first optocoupler
Control circuit connects main control MCU unit；
The main control MCU unit connects multiple relay switching circuits, and corresponding each relay switching circuit is connected with a string of electricity
Core discharge circuit, each single string battery core discharge circuit are connected with low-voltage detection circuit, and low-voltage detection circuit is connected with winding displacement
Jack interface, the battery pack of the more string battery core compositions of cable socket interface connection；
Each single string battery core discharge circuit connects start and stop driving circuit, and start and stop driving circuit connects the second optocoupler control electricity
Road, the second optocoupler control circuit connect main control MCU unit；
The low-voltage detection circuit is connected with single string battery core electric discharge and completes feed circuit, total electric discharge low-voltage feed circuit, and
Feed circuit is completed in single string battery core electric discharge, total electric discharge low-voltage feed circuit connects the second optocoupler control circuit；
Each relay switching circuit is connected with charging circuit, and charging circuit connects power circuit, single string battery core voltage is surveyed
Circuit is measured, single battery core tension measuring circuit of going here and there connects each relay switching circuit, and relay switching circuit is switched to each
Battery core of going here and there charges.
2. a kind of lithium battery group balance of voltage repairs the restorative procedure of circuit, the described method comprises the following steps:
Step 1: circuit is repaired in operational and controlled key button starting, carries out assembled battery total voltage electric discharge, discharge current is according to battery capacity size
It is adjusted, by voltage gear switching circuit, is divided into five electric current gear 2A, 4A, 6A, 8A, 10A current discharges；
Step 2: the low-voltage detection circuit of each single string battery core connection detects the voltage of each single string battery core, when step 1 electricity
In the group total voltage discharge process of pond, when voltage is lower than protection value after certain a string of battery core electric discharge of low-voltage detection circuit detection, then
Step 1 is automatically stopped the electric discharge of whole group battery pack, enters step three single string battery core discharge in parallel；
Step 3: each single string battery core for forming battery pack is connected by cable socket interface, and each single string battery core has correspondence
Single string battery core discharge circuit, corresponding each single string battery core discharge circuit are connected with low-voltage detection circuit, the control of main control MCU unit
The single string battery core discharge circuit of starting, when certain a string of battery core is first discharged to under-voltage protection value, i.e. string battery core electric discharge is automatically stopped,
Other single string battery core discharge circuits continue to discharge, until whole battery cores are discharged to under-voltage protection value, pass through low voltage test
Circuit, the single string battery core discharge in parallel of the second optocoupler control circuit connection main control MCU unit output are completed, and are filled subsequently into step 4
Circuit；
Step 4: charging circuit starting, relay switching circuit, which switches to, charges to each single string battery core, main control MCU list
Member finds maximum voltage value in battery pack by single string battery core tension measuring circuit measurement, and the maximum voltage value is as other battery cores
The low battery core of other voltages is charged to voltage reference value automatically by the voltage reference value of charging；
Step 5: it completes battery voltage balance and repairs, digital display screen or auditory tone cues are fed back to by main control MCU unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113631.4A CN109786863A (en) | 2017-11-13 | 2017-11-13 | A kind of lithium battery group balance of voltage repairs circuit and restorative procedure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113631.4A CN109786863A (en) | 2017-11-13 | 2017-11-13 | A kind of lithium battery group balance of voltage repairs circuit and restorative procedure |
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| CN109786863A true CN109786863A (en) | 2019-05-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311450A (en) * | 2019-07-31 | 2019-10-08 | 广东思诺伟智能技术有限公司 | A kind of active equalization circuit suitable for 16 string battery packs |
| CN111224185A (en) * | 2020-02-24 | 2020-06-02 | 深圳市电科电源股份有限公司 | Controllable self-repairing system and method for lithium battery |
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| CN103647316A (en) * | 2013-12-03 | 2014-03-19 | 深圳市雅格朗电子有限公司 | Serially-connected lithium battery set power supply equalization management system |
| CN207530077U (en) * | 2017-11-13 | 2018-06-22 | 屈海强 | A kind of lithium battery group balance of voltage repairs circuit |
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| JP2000228831A (en) * | 1999-02-08 | 2000-08-15 | Hitachi Ltd | Correction method for irregularity in set battery |
| JP2011015561A (en) * | 2009-07-03 | 2011-01-20 | Meidensha Corp | Charging/discharging device of lithium ion capacitor cell |
| CN103178566A (en) * | 2011-12-26 | 2013-06-26 | 广州丰江电池新技术股份有限公司 | Uncharged state maintenance method and maintenance instrument of lithium battery pack unbalance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110311450A (en) * | 2019-07-31 | 2019-10-08 | 广东思诺伟智能技术有限公司 | A kind of active equalization circuit suitable for 16 string battery packs |
| CN110311450B (en) * | 2019-07-31 | 2024-05-07 | 广东思诺伟智能技术有限公司 | Active equalization circuit suitable for 16-string battery pack |
| CN111224185A (en) * | 2020-02-24 | 2020-06-02 | 深圳市电科电源股份有限公司 | Controllable self-repairing system and method for lithium battery |
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