CN209627031U - 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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- CN209627031U CN209627031U CN201920639354.9U CN201920639354U CN209627031U CN 209627031 U CN209627031 U CN 209627031U CN 201920639354 U CN201920639354 U CN 201920639354U CN 209627031 U CN209627031 U CN 209627031U
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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 79
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims 1
- 230000008439 repair process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 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
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration 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
- 238000005303 weighing Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model 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 solutions of the utility model are 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 utility model relates to lithium battery recovery technique field, in particular to adaptively repaired in a kind of lithium battery charging process
Replica 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 make at present
Less, disadvantage is that circuit complexity cost is too high, and needs to use transformer etc., and 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.
Utility model content
The main purpose of the utility model is to propose adaptive repairing type equalizing circuit, purport in a kind of lithium battery charging process
In the reparation for realizing battery in charging process using equalizing circuit and low current charge electrical combination；Monitoring is single during the charging process
String 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, the utility model proposes a kind of lithium battery charging process in the balanced electricity of adaptive repairing type
Road, for being automatically repaired when lithium battery group is charged by charger, comprising: lithium battery group, charges normal first switch tube
Control circuit and adaptive cooperation charging circuit, the anode of the charger is connect with the anode of the lithium battery group, described to fill
The cathode of electric appliance is connect by the first switch tube with the cathode of the lithium battery group, the adaptive cooperation charging circuit with
The first switch tube simultaneously connects, and the lithium battery group includes the lithium cells of several concatenations, and each lithium cells connect
It is connected to detection equalizing circuit, several detection equalizing circuits and the control circuit that charges normal pass sequentially through current limliting partial pressure electricity
Resistance connection；The control terminal for charging normal control circuit respectively with the controlled end of the first switch tube and described adaptive match
Close the controlled end connection of charging circuit；The detection equalizing circuit includes detection filter resistance, detection filter capacitor, detection core
Piece, detection control switch, equalizing resistance, detection resistance and detection transistor；The detection filter resistance and the detection filter
Capacitor first concatenates, 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, the grid of 5 pins of the detection chip and the detection control switch
Pole connection, the drain electrode of the detection control switch by equalizing resistance respectively with the anode of the lithium cells and the detection
The emitter of triode connects, and the source electrode of the detection control switch is connect with the cathode of the lithium cells, the detection
The drain electrode of control switch is connect by the detection resistance with the base stage of the detection transistor, the current collection of the detection transistor
Pole is connect through the corresponding current limliting divider resistance 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, the first TVS diode and institute
State twelfth resistor and connect, one end with it is described control triode collector connect, the other end respectively with three poles of the control
The source electrode of the emitter of pipe, the source electrode of the first switch tube and the second switch connects.
The battery balanced dress of the adaptive repairing type of the battery charging process of technical solutions of the utility model compared with prior art
It is simple, effective to set topological structure, it is not only at low cost, and also reliability is higher, is acted on simultaneously using charging circuit and equalizing circuit
Charging process cuts off major loop large current charge when any a string of the battery cores of battery pack reach balanced cut-in voltage at once, opens
Low current bypasses charging circuit, and maintenance reaches control charger large current charge with the euqalizing current method of synchronization and causes in battery pack
Battery core single channel energy imbalance thoroughly repairs uneven battery after some time.It solves battery pack to charge in charger
To the reparation of battery in journey, the unbalance battery core of monomer is repaired using the energy of charger, with low cost, simple circuit is stable
Mode changes 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 illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the circuit diagram of the utility model；
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The utility model proposes a kind of lithium battery charging process in adaptive repairing type equalizing circuit, in lithium battery
Being automatically repaired when group is charged by charger, as shown in Figure 1, comprising: lithium battery group, charges normal control at first switch tube MP1
Circuit 10 processed and adaptive cooperation charging circuit 20, the anode of charger Charger connect with the anode of lithium battery group, charge
The cathode of device Charger is connected by the cathode of first switch tube MP1 and lithium battery group, adaptive cooperation charging circuit 20 and the
One switching tube MP1 simultaneously connects, and lithium battery group includes the lithium cells (V1/V2/V3 and V4) of several concatenations, each lithium cells
It is 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 detections are equal
Weighing apparatus circuit 30 passes sequentially through current limliting divider resistance (R5,56, R7, R8) connection with control circuit 10 is charged normal；Charge normal control
Controlled end of the control terminal of circuit 10 processed respectively with the controlled end of first switch tube MP1 and adaptive cooperation charging circuit 20 connects
It connects；Detecting equalizing circuit 30 includes detection filter resistance RB9, detection filter capacitor CB5, detection chip UB5, detection control switch
MB5, equalizing resistance RB13, detection resistance R1 and detection transistor Q2；Detection filter resistance RB9 and detection filter capacitor are first gone here and there
It connects, then is attempted by formation detection filter circuit in lithium cells；2 pins of detection chip UB5 respectively with detection filter resistance
RB9 is connected with detection filter capacitor CB5, and 5 pins of detection chip UB5 are connect with the grid of detection control switch MB5, is detected
Control switch MB5 drain electrode by equalizing resistance RB13 respectively with lithium cells V4 anode and detection transistor Q2 transmitting
The source electrode of pole connection, detection control switch MB5 is connect with the cathode of lithium cells V4, the drain electrode warp of detection control switch MB5
It crosses detection resistance R1 to connect with the base stage of detection transistor Q2, the collector of detection transistor Q2 is 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 solutions of the utility model is simple,
Effectively, not only at low cost, and reliability is higher, acts on charging process simultaneously using charging circuit and equalizing circuit, works as battery
When any a string of the battery cores of group reach balanced cut-in voltage, major loop large current charge is cut off at once, opens low current bypass charging
Circuit, maintenance, which reaches control charger Charger large current charge with the euqalizing current method of synchronization, leads to battery core list in battery pack
Road energy imbalance thoroughly repairs uneven battery after some time.It solves battery pack to charge in charger Charger
In the process to the reparation of battery, the unbalance battery core of monomer is repaired, using the energy of charger Charger with low cost, circuit
Succinctly 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 utility model, adaptive cooperation charging circuit 20 includes: the 15th resistance R15, second opens
The drain electrode for closing pipe MP2, the second TVS diode ZD2, the 14th resistance R14 and the 17th resistance R17, second switch MP2 is passed through
15th resistance R15 and the cathode of lithium battery group connect, and the source electrode of second switch MP2 and the cathode of charger Charger connect
It connecing, the grid of second switch MP2 is connect by the 17th resistance R17 with the control terminal for charging normal control circuit 10, and second
TVS diode and the 14th resistance R14 simultaneously connect, the cathode of the input terminal of the second TVS diode ZD2 and charger Charger with
And the source electrode connection of second switch MP2, the output end of the second TVS diode ZD2 are connect with the grid of second switch MP2.
In an embodiment of the utility model, 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 tenth
Three resistance R13, the 16th resistance R16 and first capacitor C1；First capacitor C1 and thirteenth resistor R13 simultaneously connects composition control filtering
Circuit 13, the base stage for controlling triode Q11 are connect with the output end of control filter circuit 13, control the input terminal of filter circuit 13
It is connect through current limliting divider resistance (R5,56, R7, R8) with detection equalizing circuit 30, the collector of control triode Q11 passes through first
Diode D1 and the 16th resistance R16 are connect with the 17th resistance R17, control triode Q11 collector also with first switch
The grid connection of pipe MP1, the first TVS diode ZD1 and twelfth resistor R12 simultaneously connect, the current collection of one end and control triode
Pole connection, the other end source electrode and second switch with the control emitter of triode Q11, first switch tube MP1 respectively
The source electrode of MP2 connects.
Driving circuit 11 includes: that charging driving signal (ChargDriver) 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.Driving signal (ChargDriver) is charged under normality
For high level state, driving triode Q7 base stage, triode Q7 conducting, after conducting triode Q7 collector down for low level,
Low level signal is loaded into triode Q6 base stage by resistance R10, and triode Q6 is also switched on, and triode Q6 current collection is extremely after conducting
VCC current potential respectively drives normal charging circuit 10 using the 17th resistance R17 of the 16th resistance R16/ and fills with adaptive cooperation
Circuit 20.
Under normal charging condition, the circuit that charger Charger connects lithium battery group is switched by first switch tube MP1
It is normal charging condition that pipe, which forms large current charge circuit, and 5 pins of detection chip UB5 export low level.When in lithium battery group
When pressure difference occurs in single battery cell in series connection, take the lead in the battery for reaching balanced unlocking condition, at this time 5 pins of detection chip UB5
High level is become from low level, the grid of first switch tube MP1 becomes high level, first switch tube MP1 conducting, grid source electrode
Closure.The battery core carries out passive equilibrium by equalizing resistance RB13, and it is electric after testing this time to form pressure drop in equalizing resistance RB13
The base stage of R1 driving detection transistor Q2 is hindered, detection transistor Q2 is also switched on simultaneously, emitter collector closure.High level
Signal passes through the base stage of corresponding current limliting divider resistance (R5,56, R7, R8) R5, R6, R7, R8 drive control triode Q11, control
Triode Q11 conducting processed, emitter collector closure close major loop charging first switch tube MP1, first switch tube MP1
Hourglass source electrode disconnect.Charge circuit is switched at this time is limited by the circuit that second switch MP2 and the 15th resistance R15 are formed
Current charge completes the charging of Adaptive matching euqalizing current and repairs unbalance battery functi on.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (3)
1. adaptive repairing type equalizing circuit in a kind of lithium battery charging process, for when lithium battery group is charged by charger
Be automatically repaired characterized by comprising lithium battery group, first switch tube, charge normal control circuit and it is adaptive cooperation fill
Circuit, the anode of the charger are connect with the anode of the lithium battery group, and the cathode of the charger passes through described first
Switching tube is connect with the cathode of the lithium battery group, and the adaptive cooperation charging circuit and the first switch tube simultaneously connect, institute
The lithium cells that lithium battery group includes several concatenations are stated, each lithium cells are connected with detection equalizing circuit, several
The 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
Controlled end of the control terminal of circuit processed respectively with the controlled end of the first switch tube and the adaptive cooperation charging circuit connects
It connects；The detection equalizing circuit includes detection filter resistance, detection filter capacitor, detection chip, detection control switch, balanced electricity
Resistance, detection resistance and detection transistor；The detection filter resistance and the detection filter capacitor first concatenate, then are attempted by described
Detection filter circuit is formed in lithium cells；2 pins of the detection chip respectively with the detection filter resistance and detection
Filter capacitor connection, 5 pins of the detection chip are connect with the grid of the detection control switch, the detection control switch
Drain electrode connect respectively with the emitter of the anode of the lithium cells and the detection transistor by equalizing resistance, it is described
The source electrode of detection control switch is connect with the cathode of the lithium cells, and the inspection is passed through in the drain electrode of the detection control switch
Measuring resistance is connect with the base stage of the detection transistor, and the collector of the detection transistor is through the corresponding current limliting partial pressure electricity
Resistance 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 claimed in claim 2, 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 |
|---|---|---|---|
| CN201920639354.9U CN209627031U (en) | 2019-05-05 | 2019-05-05 | Adaptive repairing type equalizing circuit in a kind of lithium battery charging process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920639354.9U CN209627031U (en) | 2019-05-05 | 2019-05-05 | Adaptive repairing type equalizing circuit in a kind of lithium battery charging process |
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| CN209627031U true CN209627031U (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920639354.9U Withdrawn - After Issue CN209627031U (en) | 2019-05-05 | 2019-05-05 | Adaptive repairing type equalizing circuit in a kind of lithium battery charging process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212597A (en) * | 2019-05-05 | 2019-09-06 | 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 CN201920639354.9U patent/CN209627031U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212597A (en) * | 2019-05-05 | 2019-09-06 | 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 |
| CN110212597B (en) * | 2019-05-05 | 2024-03-19 | 深圳市山河动力电子有限公司 | Self-adaptive repair type equalizing circuit in lithium battery charging process |
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