CN107394293A - The restorative procedure and its reparation circuit of a kind of retired capacity of lithium ion battery - Google Patents
The restorative procedure and its reparation circuit of a kind of retired capacity of lithium ion battery Download PDFInfo
- Publication number
- CN107394293A CN107394293A CN201710551634.XA CN201710551634A CN107394293A CN 107394293 A CN107394293 A CN 107394293A CN 201710551634 A CN201710551634 A CN 201710551634A CN 107394293 A CN107394293 A CN 107394293A
- Authority
- CN
- China
- Prior art keywords
- ion battery
- lithium ion
- retired
- retired lithium
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Abstract
The invention discloses a kind of restorative procedure of retired capacity of lithium ion battery and its repair circuit.The present invention is charged by the way of periodicity low current bidirectional pulse to the retired lithium ion battery of reparation, retired lithium ion battery caused polarity effect in each charge cycle can be eliminated, and the small lithium metal dendrite adhered on original negative material can be eliminated, make the lithium metal dendrite on negative pole there is part to be restored to active lithium ion again；After being full of, again with low current constant-current discharge, after repeating multipass, capacity has a certain degree of recovery so that retired lithium ion battery has bigger application value, when the retired lithium ion battery echelon of progress is applied to energy-storage system, also bigger electric energy can be stored, with developing rapidly for new-energy automobile industry, substantial amounts of retired lithium ion battery will be produced every year, this patented technology is applied to retired lithium ion battery, the development to New Energy Industry and energy storage industry is significant.
Description
Technical field
The present invention relates to battery capacity recovery technique, and in particular to a kind of restorative procedure of retired capacity of lithium ion battery and
It repairs circuit.
Background technology
With new-energy automobile, energy-accumulating power station, family's energy storage, electric bicycle, electrodynamic balance car, Segway Human Transporter, electricity
The industries such as power driven tools develop rapidly, use lithium ion battery more and more as the application of power supply in these industries, power lithium
Ion battery is widely used, and lithium ion battery is in use, it may occur that polarity effect and active material loss, makes internal resistance
Increase, life time decay, life time decay after (generally 60%~80%), will turn into retired battery, retired electricity to a certain extent
The quantity in pond over the next several years can be increasing, and retired lithium ion battery can carry out capacity by certain technological means and repair
It is multiple, the capacity of battery pack is obtained recovery to a certain extent, but it is seldom currently for the capacity restorative procedure of lithium ion battery
There is producer to be studied.
The existing application study for retired lithium ion battery, retired lithium ion battery is simply subjected to again parameter and surveyed
Amount and sorting, combination application is re-started by the more consistent retired lithium ion battery of parameter, and majority is applied in energy storage field, and
Lack the restorative procedure research to retired capacity of lithium ion battery.If retired lithium ion battery can be made to pass through electronic technology method
Repaired, and its capacity is obtained a certain degree of recovery, then retired battery is subjected to echelon application, can be had very much using valency
Value, there is sizable meaning.
The content of the invention
For above problems of the prior art, the present invention proposes a kind of reparation of retired capacity of lithium ion battery
Method and its repair circuit, power application retired lithium ion battery in major part can be filled by low current bidirectional pulse
Electricity and low discharging current simultaneously circulate electronic technology means progress capacity reparation for several times, the capacity resuming after reparation
5%~30%, so as to make the application of retired lithium ion battery more be worth, and with the outburst of new-energy automobile market
Formula increases, and following retired power lithium-ion battery quantity can be quite big, using electronic technology restorative procedure by retired lithium-ion electric
Pond carries out echelon application again after carrying out capacity reparation, has sizable Practical significance.
It is an object of the present invention to propose a kind of reparation circuit of retired capacity of lithium ion battery.
The reparation circuit of the retired capacity of lithium ion battery of the present invention includes：Charging circuit, charge switch, discharge circuit and
Discharge switch；Wherein, the positive pole of retired lithium ion battery to be repaired is connected with the anode of charging circuit, and charging circuit is born
End is connected with the negative pole of retired lithium ion battery, and serial connection charge switchs between retired lithium ion battery and charging circuit, charging
After switch closure, charging circuit charges to retired lithium ion battery, produces charging current；By retired lithium ion to be repaired
The positive pole of battery is connected with the anode of discharge circuit, and the negative terminal of discharge circuit is connected with the negative pole of retired lithium ion battery,
Discharged in series switchs between retired lithium ion battery and discharge circuit, and after discharge switch closure, discharge circuit is to retired lithium ion
Battery is discharged, and produces discharge current；When being repaired to retired lithium ion battery, pass through the two-way arteries and veins of periodicity low current
The mode of punching charges to retired lithium ion battery, then is a discharge and recharge with low current constant current to retired lithium-ion electric tank discharge
Process, after multiple charge and discharge process is carried out, retired lithium ion battery reparation is completed.
Charge switch or discharge switch using FET, triode, insulated gate bipolar transistor IGBT, IGCT,
Relay or solid-state relay.Charge switch or discharge switch are connected to the positive pole of retired lithium ion battery, or are connected to and move back
The negative pole of lithium ion battery is used as a servant, its principle and positive pole use just the same.
It is another object of the present invention to provide a kind of restorative procedure of retired capacity of lithium ion battery.
The restorative procedure of the retired capacity of lithium ion battery of the present invention, comprises the following steps：
1) the retired lithium ion battery of reparation is charged by the way of periodicity low current bidirectional pulse, until moving back
The voltage of labour lithium ion battery reaches charging limitation voltage：
In each charge cycle, the most of the time closes charge switch, and discharge switch disconnects, positive pulse electric current stream
Through retired lithium ion battery, show as charging；In each charge cycle, fraction of time disconnects charge switch, electric discharge
Switch closure, negative pulse current flow through retired lithium ion battery, show as discharging；Wherein, the time of positive pulse electric current is more than negative
The time of pulse current, retired lithium ion battery absorb energy in positive pulse electric current, release energy in negative pulse current, move back
Energy storage increase of the lithium ion battery in each charge cycle is used as a servant, total shows as charged state, energy storage increase, voltage rise；
The mode of this periodicity low current bidirectional pulse, insertion of the retired lithium ion battery on positive and negative pole material are uniform with abjection
, due in each charge cycle, with the presence of negative pulse current, retired lithium ion battery can be eliminated in each charging week
Polarity effect caused by interim, and the small lithium metal branch adhered on the original negative material of retired lithium ion battery can be eliminated
Crystalline substance, the lithium metal dendrite on negative pole is set to have part to be restored to active lithium ion again；
2) when the voltage of retired lithium ion battery reaches charging limitation voltage, into wait state, filled when voltage is less than
During electricity limitation voltage, a pulse is recharged, is again introduced into wait state, with the progress of this charging process, two pulses
Between interval time can increasingly grow, when the interval time between two pulses reach full of judge interval time when, charge
Complete, stop charging；
3) retired lithium ion battery is discharged with low current constant current, until voltage stops when reaching discharge cut-off voltage
Only；
4) repeat step 1)~3) multipass, recover the capacity of retired lithium ion battery, complete repairing for retired lithium ion battery
Multiple process.
Wherein, in step 1), in a charge cycle, charging current is set between 0.05C~0.2C；Discharge current
It is set between 0.05C~0.2C；The time of one charge cycle is between 10mS~10S；The dutycycle of positive pulse electric current exists
Between 90%~99%.
In step 2), full of judging interval time for 3~8 seconds.
In step 3), the discharge current of low current constant current is between 0.05C~0.2C.
In step 4), repeat 3~5 times, complete the reparation of retired lithium ion battery.
Advantages of the present invention：
The present invention is charged by the way of periodicity low current bidirectional pulse to the retired lithium ion battery of reparation, energy
Retired lithium ion battery caused polarity effect in each charge cycle is enough eliminated, and it is former to eliminate retired lithium ion battery
There is the small lithium metal dendrite adhered on negative material, make the lithium metal dendrite on negative pole there is part to be restored to have again
The lithium ion of activity；After retired lithium ion battery is full of, then with low current constant-current discharge, after repeating multipass, retired lithium-ion electric
The capacity in pond has a certain degree of recovery so that retired lithium ion battery has bigger application value, carry out retired lithium from
When sub- battery echelon is applied to energy-storage system, bigger electric energy can be also stored, with developing rapidly for new-energy automobile industry, often
Substantial amounts of retired lithium ion battery will be produced year, this patented technology is applied to retired lithium ion battery, new energy is produced
The development of industry and energy storage industry is significant.
Brief description of the drawings
Fig. 1 is the structured flowchart of one embodiment of the reparation circuit of the retired capacity of lithium ion battery of the present invention；
Fig. 2 is the pulse schematic diagram of the charge cycle of the restorative procedure of the retired capacity of lithium ion battery of the present invention；
Fig. 3 is the electric current of the charge cycle of one embodiment of the restorative procedure of the retired capacity of lithium ion battery of the present invention
Figure.
Embodiment
Below in conjunction with the accompanying drawings, by specific embodiment, the present invention is expanded on further.
As shown in figure 1, the reparation circuit of the retired capacity of lithium ion battery of the present embodiment includes：Charging circuit, charging are opened
Pass, discharge circuit and discharge switch；Wherein, the positive pole connection charge switch of retired lithium ion battery to be repaired, charge switch
It is connected with the anode of charging circuit, the negative terminal of charging circuit is connected with the negative pole of retired lithium ion battery, in charge switch
After closure, charging circuit charges to retired lithium ion battery, produces charging current；By retired lithium ion battery to be repaired
Positive pole connection discharge switch, discharge switch is connected with the anode of discharge circuit, the negative terminal of discharge circuit and retired lithium ion
The negative pole of battery is connected, and discharge circuit discharges lithium ion battery after discharge switch closure, produces discharge current.
As shown in Fig. 2 periodicity low current bidirectional pulse, the time of a charge cycle is between 10mS~10S.
The restorative procedure of the retired capacity of lithium ion battery of the present embodiment, comprises the following steps：
1) the retired lithium ion battery of reparation is charged by the way of periodicity low current bidirectional pulse, Zhi Dao electricity
Cell voltage reaches 4.2V：
In each charge cycle, 90% time closed charge switch, and discharge switch disconnects, and positive pulse electric current flows through
Battery, charging current show as charging between 0.05C~0.2C；Charge cycle is 2s, in each charge cycle,
10% time disconnected charge switch, and discharge switch closure, negative pulse current flows through battery, and discharge current is in 0.05C~0.2C
Between, show as discharging, as shown in Figure 3；
2) when cell voltage reaches 4.2V, into wait state, when cell voltage is less than 4.2V, an arteries and veins is recharged
Punching, is again introduced into wait state, and with the progress of this charging process, the interval time between two pulses can increasingly be grown,
When the interval time between two pulses reaching 5s, charging complete, stop charging；
3) battery is discharged with 0.1C constant currents, until voltage stops when reaching 3V；
4) repeat step 1)~3) 3 times, recover the capacity of retired lithium ion battery to a certain extent, complete retired lithium from
The repair process of sub- battery.
It is finally noted that the purpose for publicizing and implementing example is that help further understands the present invention, but this area
Technical staff be appreciated that：Without departing from the spirit and scope of the invention and the appended claims, it is various to replace and repair
It is all possible for changing.Therefore, the present invention should not be limited to embodiment disclosure of that, and the scope of protection of present invention is to weigh
The scope that sharp claim defines is defined.
Claims (10)
1. a kind of restorative procedure of retired capacity of lithium ion battery, it is characterised in that the restorative procedure comprises the following steps：
1) the retired lithium ion battery of reparation is charged by the way of periodicity low current bidirectional pulse, until retired lithium
The voltage of ion battery reaches charging limitation voltage：
In each charge cycle, the most of the time closes charge switch, and discharge switch disconnects, and positive pulse electric current, which flows through, to move back
Lithium ion battery is used as a servant, shows as charging；In each charge cycle, fraction of time disconnects charge switch, discharge switch
Closure, negative pulse current flow through retired lithium ion battery, show as discharging；Wherein, the time of positive pulse electric current is more than negative pulse
The time of electric current, retired lithium ion battery absorb energy in positive pulse electric current, and energy, retired lithium are released in negative pulse current
Energy storage increase of the ion battery in each charge cycle, total shows as charged state, energy storage increase, voltage rise；It is this
The mode of periodicity low current bidirectional pulse, insertion of the retired lithium ion battery on positive and negative pole material with abjection be it is uniform,
Due in each charge cycle, with the presence of negative pulse current, retired lithium ion battery can be eliminated in each charge cycle
Caused polarity effect, and the small lithium metal dendrite adhered on the original negative material of retired lithium ion battery can be eliminated, make
Lithium metal dendrite on negative pole has part to be restored to active lithium ion again；
2) when the voltage of retired lithium ion battery reaches charging limitation voltage, into wait state, limited when voltage is less than charging
During voltage processed, a pulse is recharged, is again introduced into wait state, with the progress of this charging process, between two pulses
Interval time can increasingly grow, when the interval time between two pulses reach full of judge interval time when, charging complete,
Stop charging；
3) retired lithium ion battery is discharged with low current constant current, until voltage stops when reaching discharge cut-off voltage；
4) repeat step 1)~3) multipass, recover the capacity of retired lithium ion battery, complete the reparation of retired lithium ion battery
Journey.
2. restorative procedure as claimed in claim 1, it is characterised in that in step 1), in a charge cycle, charging current
It is set between 0.05C~0.2C；Discharge current is set between 0.05C~0.2C.
3. restorative procedure as claimed in claim 1, it is characterised in that in step 1), the time of a charge cycle exists
Between 10mS~10S.
4. restorative procedure as claimed in claim 1, it is characterised in that in step 1), the dutycycle of positive pulse electric current exists
Between 90%~99%.
5. restorative procedure as claimed in claim 1, it is characterised in that in step 2), full of judging interval time for 3~8
Second.
6. restorative procedure as claimed in claim 1, it is characterised in that in step 3), the discharge current of low current constant current exists
Between 0.05C~0.2C.
7. restorative procedure as claimed in claim 1, it is characterised in that in step 4), repeat 3~5 times, complete retired lithium from
The reparation of sub- battery.
8. a kind of reparation circuit of retired capacity of lithium ion battery, it is characterised in that the reparation circuit includes：Charging circuit,
Charge switch, discharge circuit and discharge switch；Wherein, the positive pole of retired lithium ion battery and the anode of charging circuit to be repaired
It is connected, the negative terminal of the charging circuit is connected with the negative pole of retired lithium ion battery, retired lithium ion battery and charging electricity
Serial connection charge is switched between road, and after the charge switch closure, charging circuit is charged to retired lithium ion battery, and generation is filled
Electric current；The positive pole of retired lithium ion battery to be repaired is connected with the anode of discharge circuit, the discharge circuit is born
End is connected with the negative pole of retired lithium ion battery, and discharged in series switchs between retired lithium ion battery and discharge circuit, described
After discharge switch closure, discharge circuit discharges retired lithium ion battery, produces discharge current；To retired lithium-ion electric
When pond is repaired, retired lithium ion battery is charged by way of periodicity low current bidirectional pulse, then it is permanent with low current
Flow to retired lithium-ion electric tank discharge, be a charge and discharge process, after multiple charge and discharge process is carried out, retired lithium-ion electric
Pond, which is repaired, completes.
9. circuit is repaired as claimed in claim 8, it is characterised in that the charge switch or discharge switch use field-effect
Pipe, triode, insulated gate bipolar transistor, IGCT, relay or solid-state relay.
10. circuit is repaired as claimed in claim 8, it is characterised in that the charge switch or discharge switch are connected to retired
The positive pole of lithium ion battery, or it is connected to the negative pole of retired lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551634.XA CN107394293B (en) | 2017-07-07 | 2017-07-07 | A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551634.XA CN107394293B (en) | 2017-07-07 | 2017-07-07 | A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107394293A true CN107394293A (en) | 2017-11-24 |
| CN107394293B CN107394293B (en) | 2019-06-18 |
Family
ID=60335484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710551634.XA Active CN107394293B (en) | 2017-07-07 | 2017-07-07 | A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107394293B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021793A (en) * | 2018-01-09 | 2019-07-16 | 深圳市普兰德储能技术有限公司 | A method of repairing retired performance of lithium ion battery |
| CN110797593A (en) * | 2019-11-06 | 2020-02-14 | 谈益 | Activation method of renewable power supply |
| CN111082167A (en) * | 2019-11-29 | 2020-04-28 | 天能电池集团股份有限公司 | Method for repairing returned storage battery |
| WO2021096976A1 (en) * | 2019-11-12 | 2021-05-20 | Hunt Energy Enterprises, L.L.C. | Capacity regenerable excess electrolyte zn ion battery |
| WO2021163985A1 (en) * | 2020-02-21 | 2021-08-26 | 深圳市普兰德储能技术有限公司 | Method for repairing decommissioned battery module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088718A (en) * | 1992-12-20 | 1994-06-29 | 王雅各 | Sealing cadmium-nickel storage battery group safety, efficient, automatic recharging method and device thereof |
| CN101312297A (en) * | 2008-05-16 | 2008-11-26 | 浙江华源电气有限公司 | Power supply apparatus for pulse charging of accumulator |
| CN102142699A (en) * | 2011-01-12 | 2011-08-03 | 肖相如 | Method for generating and controlling charging and discharging pulses of pulse charging device |
| CN105098269A (en) * | 2014-05-23 | 2015-11-25 | 王惠民 | Repair and maintenance type charging method of lead-acid storage battery |
-
2017
- 2017-07-07 CN CN201710551634.XA patent/CN107394293B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088718A (en) * | 1992-12-20 | 1994-06-29 | 王雅各 | Sealing cadmium-nickel storage battery group safety, efficient, automatic recharging method and device thereof |
| CN101312297A (en) * | 2008-05-16 | 2008-11-26 | 浙江华源电气有限公司 | Power supply apparatus for pulse charging of accumulator |
| CN102142699A (en) * | 2011-01-12 | 2011-08-03 | 肖相如 | Method for generating and controlling charging and discharging pulses of pulse charging device |
| CN105098269A (en) * | 2014-05-23 | 2015-11-25 | 王惠民 | Repair and maintenance type charging method of lead-acid storage battery |
Non-Patent Citations (1)
| Title |
|---|
| 罗卓，唐新村，李连兴，陈静波: ""锂离子二次电池容量损失的电化学修复"", 《中南大学学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021793A (en) * | 2018-01-09 | 2019-07-16 | 深圳市普兰德储能技术有限公司 | A method of repairing retired performance of lithium ion battery |
| CN110797593A (en) * | 2019-11-06 | 2020-02-14 | 谈益 | Activation method of renewable power supply |
| WO2021096976A1 (en) * | 2019-11-12 | 2021-05-20 | Hunt Energy Enterprises, L.L.C. | Capacity regenerable excess electrolyte zn ion battery |
| US11469452B2 (en) | 2019-11-12 | 2022-10-11 | Hunt Energy Enterprises, L.L.C. | Capacity regenerable excess electrolyte Zn ion battery |
| CN111082167A (en) * | 2019-11-29 | 2020-04-28 | 天能电池集团股份有限公司 | Method for repairing returned storage battery |
| WO2021163985A1 (en) * | 2020-02-21 | 2021-08-26 | 深圳市普兰德储能技术有限公司 | Method for repairing decommissioned battery module |
| JP2022524170A (en) * | 2020-02-21 | 2022-04-28 | 深▲せん▼市普蘭徳儲能技術有限公司 | How to repair a used battery module |
| JP7142697B2 (en) | 2020-02-21 | 2022-09-27 | 深▲せん▼市普蘭徳儲能技術有限公司 | How to repair used battery modules |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107394293B (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107394293B (en) | A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery | |
| CN101917047B (en) | Method and circuit for dynamically equalizing battery management system | |
| CN104617621B (en) | Improved battery pack maintaining method | |
| CN103066671B (en) | Lithium battery group all fills method and apparatus | |
| CN103311562B (en) | Charging battery, and charging control method and discharging control method thereof | |
| CN106300545A (en) | A kind of active equalization for liquid metal cell controls device and control method | |
| CN101976876A (en) | Device and method for equalizing batteries in charging process | |
| CN103794828B (en) | A kind of lithium ion battery fast charge method and device | |
| CN106786877A (en) | The method and device charged to high power battery | |
| WO2020101784A8 (en) | Wireless power transfer system and method | |
| CN107872088A (en) | A kind of active equalizer circuit of cell pack and equalization methods | |
| CN109378534A (en) | Charging method, charging unit and mobile terminal | |
| CN105244957B (en) | For the charge and discharge balancing equipment and corresponding equalization methods of Fast Charge Battery group | |
| CN104410136B (en) | Interlaced modular Pack to Cell equalizer circuit and control method | |
| CN203205896U (en) | Charging circuit of battery pack | |
| CN101916881B (en) | Activation method of lithium ion battery | |
| CN103401037B (en) | A kind of charging method of traction accumulator | |
| CN106487070A (en) | The parallel charging of many battery modules and the system and method for balanced management | |
| CN104113104A (en) | Charging method and system | |
| CN103558557B (en) | Power battery pack detection circuit | |
| CN105048575B (en) | It is a kind of to solve the problems, such as between different battery packs the mutually circuit and its method of discharge and recharge | |
| CN104900929B (en) | The charging method of battery | |
| CN103928722B (en) | A kind of lead-acid accumulator multiple-way system online desulfurizing device of forward spike | |
| CN107231010A (en) | Voltage compensation type battery protector and balancing method | |
| CN206471812U (en) | A kind of battery pack protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |