CN110212597A - Adaptive repairing type equalizing circuit in a kind of lithium battery charging process - Google Patents
Adaptive repairing type equalizing circuit in a kind of lithium battery charging process Download PDFInfo
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- CN110212597A CN110212597A CN201910371126.2A CN201910371126A CN110212597A CN 110212597 A CN110212597 A CN 110212597A CN 201910371126 A CN201910371126 A CN 201910371126A CN 110212597 A CN110212597 A CN 110212597A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 57
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 80
- 239000003990 capacitor Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 13
- 230000008439 repair process Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H02J7/0026—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses repairing type equalizing circuits adaptive in a kind of lithium battery charging process, it include: lithium battery group, first switch tube, charge normal control circuit and adaptive cooperation charging circuit, the anode of charger is connect with the anode of lithium battery group, the cathode of charger is connected by the cathode of first switch tube and lithium battery group, adaptive cooperation charging circuit and first switch tube simultaneously connect, lithium battery group includes the lithium cells of several concatenations, each lithium cells are connected with detection equalizing circuit, several detection equalizing circuits are connected with charging normal control circuit and pass sequentially through current limliting divider resistance；The control terminal for charging normal control circuit is connect with the controlled end of the controlled end of first switch tube and adaptive cooperation charging circuit respectively.Technical solution of the present invention is simple and practical, it is intended to the reparation of battery in charging process is realized using equalizing circuit and low current charge electrical combination.
Description
Technical field
The present invention relates to lithium battery recovery technique field, in particular to adaptive repairing type in a kind of lithium battery charging process
Equalizing circuit.
Background technique
Lithium battery power supply all is being used in major part electronic product at present, with the update of electrical equipment, increasingly
More application scenarios need high voltage to be adapted to, and then carry out series stack mode using more piece lithium electricity and improve power supply electricity
Pressure meets requirement, however is being used in series in mode multisection lithium battery more, because there are battery manufacturing process battery core itself is special
Property inconsistency, cause lithium battery pack occur after being recycled for multiple times single battery core exveral phenomena about voltage imbalance generation, seriously
It influences electrical equipment and normally uses the time.
In order to solve this problem, make up the unbalance transition of battery usually using electronic control mode.It is effective at present
Control mode is broadly divided into two kinds of effective means, and passive balanced way is with active equalization mode.
It is discharge type (being also consuming type) equilibrium that passive equilibrium, which uses, and main mode is in battery pack charging process
It is middle that the unit for occurring single-unit battery core high voltage in battery pack is individually discharged, it is allowed to keep one with other economize on electricity core voltages
It causes.Advantage is that such mode is the mode that circuit is simple and cost is minimum, so what current most of battery balanced mode used
It is exactly such mode.Disadvantage is the poor low efficiency of proportionality action, and what is leaned on by discharge mode equilibrium is switch in parallel on unit
Resistance, which carries out electric discharge, can generate certain heat, so euqalizing current is generally all less, more important is exist in normal battery packet
Charging current itself is larger in charging process, and euqalizing current is small, so being difficult really to repair one group of voltage imbalance substantially
Battery pack.
It is that rechargeable (also cry and mend electric-type) is balanced that active equalization, which uses, and main mode is in battery set charge/discharge mistake
Cheng Zhong can be carried out individually charging to the unit for occurring single-unit battery core lower voltage in battery pack, or even high voltage
The electricity of unit is mended into low voltage unit, and also highest accomplishes 2A or more to euqalizing current, so portfolio effect is preferable.But it uses at present
It is less, disadvantage be circuit complexity cost it is too high, and need use transformer etc., volume is too big, and failure rate is also high.
Therefore, how to change the high problem of the equalization efficiency low cost of existing scheme, be current urgent problem to be solved.
Summary of the invention
The main object of the present invention is to propose adaptive repairing type equalizing circuit in a kind of lithium battery charging process, it is intended to be adopted
The reparation of battery in charging process is realized with equalizing circuit and low current charge electrical combination；The single string electricity of monitoring during the charging process
Cell voltage, reducing charging current protection battery pack in advance, singly string overcharge causes to overcharge risk during the charging process.
To achieve the above object, adaptive repairing type equalizing circuit in a kind of lithium battery charging process proposed by the present invention,
For being automatically repaired when lithium battery group passes through charging, comprising: lithium battery group, charges normal control circuit at first switch tube
With adaptive cooperation charging circuit, the anode of the charger is connect with the anode of the lithium battery group, and the charger is born
Pole is connect by the first switch tube with the cathode of the lithium battery group, the adaptive cooperation charging circuit and described first
Switching tube simultaneously connects, and the lithium battery group includes the lithium cells of several concatenations, and each lithium cells are connected with detection
Equalizing circuit, several detection equalizing circuits with it is described charge normal control circuit and pass sequentially through current limliting divider resistance connect；
The control terminal for charging normal control circuit charges with the controlled end of the first switch tube and the adaptive cooperation respectively
The controlled end of circuit connects；The detection equalizing circuit includes detection filter resistance, detection filter capacitor, detection chip, detection
Control switch, equalizing resistance, detection resistance and detection transistor；The detection filter resistance and the detection filter capacitor are first gone here and there
It connects, then is attempted by formation detection filter circuit in the lithium cells；2 pins of the detection chip respectively with the detection
Filter resistance and detection filter capacitance connection, 5 pins of the detection chip are connect with the grid of the detection control switch, institute
State the drain electrode of detection control switch by equalizing resistance respectively with the anode of the lithium cells and the detection transistor
The source electrode of emitter connection, the detection control switch is connect with the cathode of the lithium cells, and the detection control is opened
The drain electrode of pass is connect by the detection resistance with the base stage of the detection transistor, and the collector of the detection transistor is through phase
The current limliting divider resistance answered is connect with the control circuit that charges normal.
Preferably, the adaptive cooperation charging circuit includes: the 15th resistance, second switch, bis- pole the 2nd TVS
Pipe, the 14th resistance and the 17th resistance, the drain electrode of the second switch is by the 15th resistance and the lithium battery group
Cathode connection, the source electrode of the second switch are connect with the cathode of the charger, and the grid of the second switch passes through
17th resistance is connect with the control terminal for charging normal control circuit, second TVS diode and the described tenth
Four resistance simultaneously connect, the source of the input terminal of second TVS diode and the cathode of the charger and the second switch
Pole connection, the output end of second TVS diode are connect with the grid of the second switch.
Preferably, the control circuit that charges normal includes: driving circuit and control circuit, and the control circuit includes the
One diode, the first TVS diode, control triode, twelfth resistor, thirteenth resistor, the 16th resistance and first capacitor；
The first capacitor and the thirteenth resistor simultaneously connect composition control filter circuit, the base stage and the control of the control triode
The output end of filter circuit processed connects, and the input terminal of the control filter circuit is equal through the current limliting divider resistance and the detection
Weigh circuit connection, and the collector of the control triode connects by first diode and the 16th resistance and the 17th resistance
It connects, the collector of the control triode is also connect with the grid of the first switch tube, first TVS diode and described
Twelfth resistor simultaneously connects, one end with it is described control triode collector connect, the other end respectively with the control triode
Emitter, the first switch tube source electrode and the second switch source electrode connection.
The adaptive repairing type battery balanced device of the battery charging process of technical solution of the present invention is opened up compared with prior art
It is simple, effective to flutter structure, it is not only at low cost, and also reliability is higher, acts on charging simultaneously using charging circuit and equalizing circuit
Process cuts off major loop large current charge at once, opens small electricity when any a string of the battery cores of battery pack reach balanced cut-in voltage
Stream bypass charging circuit, maintenance, which reaches control charger large current charge with the euqalizing current method of synchronization, leads to battery core in battery pack
Single channel energy imbalance thoroughly repairs uneven battery after some time.Battery pack is solved in charger charging process
The unbalance battery core of monomer is repaired in reparation to battery using the energy of charger, with low cost, the stable mode of simple circuit
Change because the inefficient fruit of equalization efficiency is poor in passive equilibrium and active equalization is at high unstable problem.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is circuit diagram of the invention；
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Adaptive repairing type equalizing circuit in a kind of lithium battery charging process proposed by the present invention, for logical in lithium battery group
Being automatically repaired when overcharge, as shown in Figure 1, comprising: lithium battery group, first switch tube MP1, charge normal 10 and of control circuit
Adaptive cooperation charging circuit 20, the anode of charger Charger are connect with the anode of lithium battery group, charger Charger's
Cathode is connected by first switch tube MP1 and the cathode of lithium battery group, adaptive cooperation charging circuit 20 and first switch tube MP1
And connect, lithium battery group includes the lithium cells (V1/V2/V3 and V4) of several concatenations, and each lithium cells are connected with detection
Equalizing circuit 30 (Wen Zhongjun is by taking the corresponding detection equalizing circuit 30 of lithium cells V4 as an example), several 30 Hes of detection equalizing circuit
It charges normal control circuit 10 and passes sequentially through current limliting divider resistance (R5,56, R7, R8) connection；Charge normal control circuit 10
Control terminal is connect with the controlled end of the controlled end of first switch tube MP1 and adaptive cooperation charging circuit 20 respectively；Detection is balanced
Circuit 30 includes detection filter resistance RB9, detection filter capacitor CB5, detection chip UB5, detection control switch MB5, balanced electricity
Hinder RB13, detection resistance R1 and detection transistor Q2；Detection filter resistance RB9 and detection filter capacitor first concatenate, then are attempted by
Detection filter circuit is formed in lithium cells；2 pins of detection chip UB5 are filtered with detection filter resistance RB9 and detection respectively
5 pins of the CB5 connection of wave capacitor, detection chip UB5 are connect with the grid of detection control switch MB5, detection control switch MB5's
Drain electrode is connect with the emitter of the anode of lithium cells V4 and detection transistor Q2 respectively by equalizing resistance RB13, detection control
The source electrode of system switch MB5 is connect with the cathode of lithium cells V4, the drain electrode resistance R1 after testing of detection control switch MB5
Connect with the base stage of detection transistor Q2, the collector of detection transistor Q2 through corresponding current limliting divider resistance (R5,56, R7,
R8) with charge normal control circuit 10 and connect.
The adaptive repairing type battery balanced device topological structure of the battery charging process of technical solution of the present invention is simple, has
Effect, it is not only at low cost, and also reliability is higher, acts on charging process simultaneously using charging circuit and equalizing circuit, works as battery pack
When any a string of battery cores reach balanced cut-in voltage, major loop large current charge is cut off at once, opens low current bypass charging electricity
Road, maintenance, which reaches control charger Charger large current charge with the euqalizing current method of synchronization, leads to battery core single channel in battery pack
Energy imbalance thoroughly repairs uneven battery after some time.It solves battery pack to charge in charger Charger
To the reparation of battery in journey, the unbalance battery core of monomer is repaired using the energy of charger Charger, with low cost, circuit letter
Clean stable mode changes because the inefficient fruit of equalization efficiency is poor in passive equilibrium and active equalization is at high unstable problem.
In an embodiment of the present invention, adaptive cooperation charging circuit 20 includes: the 15th resistance R15, second switch
The drain electrode of MP2, the second TVS diode ZD2, the 14th resistance R14 and the 17th resistance R17, second switch MP2 pass through the tenth
Five resistance R15 and the cathode of lithium battery group connect, and the source electrode of second switch MP2 is connect with the cathode of charger Charger, the
The grid of two switching tube MP2 is connect by the 17th resistance R17 with the control terminal for charging normal control circuit 10, the 2nd TVS bis-
Pole pipe and the 14th resistance R14 simultaneously connect, the input terminal of the second TVS diode ZD2 and the cathode and second of charger Charger
The source electrode of switching tube MP2 connects, and the output end of the second TVS diode ZD2 is connect with the grid of second switch MP2.
In an embodiment of the present invention, charging normal control circuit 10 includes: driving circuit 11 and control circuit 12, control
Circuit 12 includes first diode D1, the first TVS diode ZD1, control triode Q11, twelfth resistor R12, the 13rd electricity
Hinder R13, the 16th resistance R16 and first capacitor C1；First capacitor C1 and thirteenth resistor R13 simultaneously connects composition control filter circuit
13, the base stage for controlling triode Q11 is connect with the output end of control filter circuit 13, controls the input terminal of filter circuit 13 through limiting
Flow point piezoresistance (R5,56, R7, R8) is connect with detection equalizing circuit 30, and the collector of control triode Q11 passes through the one or two pole
Pipe D1 and the 16th resistance R16 are connect with the 17th resistance R17, control triode Q11 collector also with first switch tube MP1
Grid connection, the first TVS diode ZD1 and twelfth resistor R12 simultaneously connect, and the collector of one end and control triode connects
Connect, the other end respectively with the control emitter of triode Q11, the source electrode of first switch tube MP1 and second switch MP2
Source electrode connection.
Driving circuit 11 includes: that charging driving signal (Charg Driver) is connected to triode Q7 base stage, base stage connection
R11 to GND drop-down, Q7 collector pass through resistance R10 connecting triode Q6 base stage, and base stage connects R9 to VCC pull-up, Q6 collector
Normal charging circuit and equalization charging circuit are respectively driven by R16/R17.Charge driving signal (Charg under normality
Driver) be high level state, driving triode Q7 base stage, triode Q7 conducting, after conducting triode Q7 collector down for
Low level, low level signal are loaded into triode Q6 base stage by resistance R10, and triode Q6 is also switched on, triode Q6 after conducting
Current collection extremely VCC current potential respectively drives normal charging circuit 10 using the 17th resistance R17 of the 16th resistance R16/ and adapts to
Type cooperates charging circuit 20.
Under normal charging condition, first switch tube MP1 switching tube is passed through in the circuit that charger Charger connects lithium battery group
Composition large current charge circuit is normal charging condition, and 5 pins of detection chip UB5 export low level.When being gone here and there in lithium battery group
When pressure difference occurs in single battery cell in connection, take the lead in the battery for reaching balanced unlocking condition, at this time 5 pins of detection chip UB5 by
Low level becomes high level, and the grid of first switch tube MP1 becomes high level, first switch tube MP1 conducting, and grid source electrode closes
It closes.The battery core carries out passive equilibrium by equalizing resistance RB13, this time forms pressure drop resistance after testing in equalizing resistance RB13
R1 drives the base stage of detection transistor Q2, and detection transistor Q2 is also switched on simultaneously, emitter collector closure.High level letter
Number by corresponding current limliting divider resistance (R5,56, R7, R8) R5, R6, R7, R8 drive control triode Q11 base stage, control
Triode Q11 conducting, emitter collector closure close major loop charging first switch tube MP1, first switch tube MP1's
Hourglass source electrode disconnects.Charge circuit, which is switched to, at this time carries out current limliting by the circuit that second switch MP2 and the 15th resistance R15 are formed
Charging completes the charging of Adaptive matching euqalizing current and repairs unbalance battery functi on.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (3)
1. adaptive repairing type equalizing circuit in a kind of lithium battery charging process, for automatic when lithium battery group passes through charging
It repairs characterized by comprising lithium battery group, first switch tube charge normal control circuit and adaptive cooperation charging electricity
Road, the anode of the charger are connect with the anode of the lithium battery group, and the cathode of the charger passes through the first switch
Pipe is connect with the cathode of the lithium battery group, and the adaptive cooperation charging circuit and the first switch tube simultaneously connect, the lithium
Battery pack includes the lithium cells of several concatenations, and each lithium cells are connected with detection equalizing circuit, several described
Detection equalizing circuit with it is described charge normal control circuit and pass sequentially through current limliting divider resistance connect；It is described to charge normal control electricity
The control terminal on road is connect with the controlled end of the controlled end of the first switch tube and the adaptive cooperation charging circuit respectively；Institute
Stating detection equalizing circuit includes detection filter resistance, detection filter capacitor, detection chip, detection control switch, equalizing resistance, inspection
Measuring resistance and detection transistor；The detection filter resistance and the detection filter capacitor first concatenate, then are attempted by the lithium electricity
Detection filter circuit is formed on pool unit；2 pins of the detection chip respectively with the detection filter resistance and detection filter
Capacitance connection, 5 pins of the detection chip are connect with the grid of the detection control switch, the leakage of the detection control switch
Pole is connect with the emitter of the anode of the lithium cells and the detection transistor respectively by equalizing resistance, the detection
The source electrode of control switch is connect with the cathode of the lithium cells, and the detection is passed through in the drain electrode of the detection control switch
Resistance is connect with the base stage of the detection transistor, and the collector of the detection transistor is through the corresponding current limliting divider resistance
It is connect with the control circuit that charges normal.
2. adaptive repairing type equalizing circuit in lithium battery charging process as described in claim 1, which is characterized in that described suitable
Answering type cooperation charging circuit includes: the 15th resistance, second switch, the second TVS diode, the 14th resistance and the 17th electricity
The drain electrode of resistance, the second switch is connect by the 15th resistance with the cathode of the lithium battery group, the second switch
Source electrode connect with the cathode of the charger, the grid of the second switch is by the 17th resistance and described normal
The control terminal connection of charging control circuit, second TVS diode and the 14th resistance simultaneously connect, the 2nd TVS bis-
The input terminal of pole pipe is connected with the source electrode of the cathode of the charger and the second switch, second TVS diode
Output end connect with the grid of the second switch.
3. adaptive repairing type equalizing circuit in lithium battery charging process as described in claim 1, which is characterized in that it is described just
Normal charging control circuit includes: driving circuit and control circuit, and the control circuit includes first diode, bis- pole the first TVS
Pipe, control triode, twelfth resistor, thirteenth resistor, the 16th resistance and first capacitor；The first capacitor and described
13 resistance simultaneously connect composition control filter circuit, and the output end of the base stage of the control triode and the control filter circuit connects
It connects, the input terminal of the control filter circuit is connect through the current limliting divider resistance with the detection equalizing circuit, the control
The collector of triode is connect by first diode and the 16th resistance with the 17th resistance, the control triode
Collector is also connect with the grid of the first switch tube, and first TVS diode and the twelfth resistor simultaneously connect, one
It holds and is connect with the collector of the control triode, the other end is opened with the emitter of the control triode, described first respectively
Close the source electrode of pipe and the source electrode connection of the second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910371126.2A CN110212597B (en) | 2019-05-05 | 2019-05-05 | Self-adaptive repair type equalizing circuit in lithium battery charging process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910371126.2A CN110212597B (en) | 2019-05-05 | 2019-05-05 | Self-adaptive repair type equalizing circuit in lithium battery charging process |
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| CN110212597A true CN110212597A (en) | 2019-09-06 |
| CN110212597B CN110212597B (en) | 2024-03-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102185169A (en) * | 2011-04-13 | 2011-09-14 | 苏州星恒电源有限公司 | Charging method and charging device for lithium ion battery pack |
| CN102593905A (en) * | 2012-02-28 | 2012-07-18 | 深圳麦格米特电气股份有限公司 | Method and circuit for equalized charging of lithium ion battery pack |
| CN104092190A (en) * | 2014-07-28 | 2014-10-08 | 中投仙能科技（苏州）有限公司 | Trigger type lithium battery physical protector based on equalization |
| CN203983969U (en) * | 2014-07-28 | 2014-12-03 | 中投仙能科技（苏州）有限公司 | A kind of based on balanced trigger-type lithium battery physical protection device |
| CN108711899A (en) * | 2018-05-03 | 2018-10-26 | 自贡同发荣实业有限公司 | A kind of lithium battery group |
| CN209627031U (en) * | 2019-05-05 | 2019-11-12 | 深圳市山河动力电子有限公司 | Adaptive repairing type equalizing circuit in a kind of lithium battery charging process |
-
2019
- 2019-05-05 CN CN201910371126.2A patent/CN110212597B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185169A (en) * | 2011-04-13 | 2011-09-14 | 苏州星恒电源有限公司 | Charging method and charging device for lithium ion battery pack |
| CN102593905A (en) * | 2012-02-28 | 2012-07-18 | 深圳麦格米特电气股份有限公司 | Method and circuit for equalized charging of lithium ion battery pack |
| CN104092190A (en) * | 2014-07-28 | 2014-10-08 | 中投仙能科技（苏州）有限公司 | Trigger type lithium battery physical protector based on equalization |
| CN203983969U (en) * | 2014-07-28 | 2014-12-03 | 中投仙能科技（苏州）有限公司 | A kind of based on balanced trigger-type lithium battery physical protection device |
| CN108711899A (en) * | 2018-05-03 | 2018-10-26 | 自贡同发荣实业有限公司 | A kind of lithium battery group |
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| CN110212597B (en) | 2024-03-19 |
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