CN104979519B - A kind of rechargeable lithium ion batteries device - Google Patents
A kind of rechargeable lithium ion batteries device Download PDFInfo
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- CN104979519B CN104979519B CN201510395330.XA CN201510395330A CN104979519B CN 104979519 B CN104979519 B CN 104979519B CN 201510395330 A CN201510395330 A CN 201510395330A CN 104979519 B CN104979519 B CN 104979519B
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 28
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 97
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000005955 Ferric phosphate Substances 0.000 claims abstract description 41
- 229940032958 ferric phosphate Drugs 0.000 claims abstract description 41
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims abstract description 41
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims abstract description 41
- 239000004065 semiconductor Substances 0.000 claims description 61
- 238000005070 sampling Methods 0.000 claims description 30
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 claims description 20
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 claims description 15
- 229940048102 triphosphoric acid Drugs 0.000 claims description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 6
- 229920006255 plastic film Polymers 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 229910052493 LiFePO4 Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims 1
- 101100484930 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) VPS41 gene Proteins 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention proposes a kind of rechargeable lithium ion batteries device, including shell, one end of the shell is provided with positive terminal and negative terminal, the inside of the shell is provided with the lithium battery group being composed in series by more piece ferric phosphate lithium cell, the positive pole of the lithium battery group is connected with the positive terminal, and the negative pole of the lithium battery group is connected with the negative terminal.Implement rechargeable lithium ion batteries device of the invention, have the advantages that：Battery capacity is larger, battery can be charged.
Description
Technical field
The present invention relates to field of lithium ion battery, more particularly to a kind of rechargeable lithium ion batteries device.
Background technology
9V batteries are a kind of conventional battery kinds, are widely used in the fields such as universal meter, machinery instrument.Traditional 9V batteries
It is use NI-G or ni-mh single battery more, and connected by six batteries, outside coated metal shell is made.Lock into shell chi
Very little, the capacity of battery is relatively low (150-200mAh), needs often to change battery, and can not charge battery.Thus
Serious pollution and larger waste is caused to environmental resource.It is unfavorable for the sustainable development of society.
The content of the invention
The technical problem to be solved in the present invention is, for prior art above-mentioned battery capacity it is smaller, can not be to battery
The defect for being charged, there is provided a kind of battery capacity is larger, the rechargeable lithium ion batteries device that can be charged to battery.
The technical solution adopted for the present invention to solve the technical problems is：A kind of rechargeable lithium ion batteries device is constructed,
Including shell, one end of the shell is provided with positive terminal and negative terminal, and the inside of the shell is provided with by more piece ferric phosphate
The lithium battery group that lithium battery is composed in series, the positive pole of the lithium battery group is connected with the positive terminal, the lithium battery group
Negative pole is connected with the negative terminal.
In rechargeable lithium ion batteries device of the present invention, ferric phosphate lithium cell list is often saved in the lithium battery group
Private aluminum plastic film is packaged or the lithium battery group is integrally packaged with the aluminum plastic film.
In rechargeable lithium ion batteries device of the present invention, the inside of the shell is additionally provided with for realizing circuit
Protection and the protection equalizing circuit plate of charge balancing effect, positive pole and the negative pole electricity also balanced with the protection of the lithium battery group
Road plate connection.
In rechargeable lithium ion batteries device of the present invention, the lithium battery group by the first ferric phosphate lithium cell,
Second ferric phosphate lithium cell and triphosphoric acid lithium iron battery are in series.
In rechargeable lithium ion batteries device of the present invention, the protection equalizing circuit plate include protection circuit and
Charging balanced circuit, the protection circuit and charging balanced circuit are connected, and the protection circuit includes protection chip, the first sampling
Resistance, the second sampling resistor, the 3rd sampling resistor, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, electric discharge under-voltage protection resistance, overcurrent protection
Resistance and short-circuit protection resistance, the first pin of the protection chip are connected with the grid of the charging metal-oxide-semiconductor, the protection core
The second pin of piece is connected by the overcurrent protection resistance with the positive pole of the lithium battery group, the source electrode of the charging metal-oxide-semiconductor
Positive pole with the lithium battery group is connected, and the drain electrode of the charging metal-oxide-semiconductor is connected with the drain electrode of the electric discharge metal-oxide-semiconductor, the guarantor
The 3rd pin for protecting chip is connected by the under-voltage protection resistance with the grid of the electric discharge metal-oxide-semiconductor, the protection chip
4th pin is connected by the short-circuit protection resistance with the negative pole of the lithium battery group, the 16th pin of the protection chip
Source electrode with the electric discharge metal-oxide-semiconductor is connected, and the 15th pin and one end of first sampling resistor of the protection chip connect
Connect, the 14th pin of the protection chip is connected with one end of second sampling resistor, the 13rd of the protection chip the
Pin is connected with one end of the 3rd sampling resistor, the other end of first sampling resistor respectively with the electric discharge metal-oxide-semiconductor
Source electrode and triphosphoric acid lithium iron battery positive pole connection, the other end of second sampling resistor respectively with the triphosphoric acid
The positive pole connection of the negative pole of lithium iron battery and the second ferric phosphate lithium cell, the other end of the 3rd sampling resistor respectively with it is described
The positive pole connection of the negative pole of the second ferric phosphate lithium cell and the first ferric phosphate lithium cell.
In rechargeable lithium ion batteries device of the present invention, the charging balanced circuit the first charge balancing core
Piece, the second charge balancing chip, the 3rd charge balancing chip, first resistor, second resistance, 3rd resistor, the first electric capacity, second
Electric capacity, the 3rd electric capacity, the first equalizing resistance, the second equalizing resistance, the 3rd equalizing resistance, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor and
Three metal-oxide-semiconductors, the second pin of the first charge balancing chip is respectively with the one of one end of the first resistor and the first electric capacity
End connection, the 5th pin of the first charge balancing chip is connected with the grid of first metal-oxide-semiconductor, and described first charges
Weigh chip the 3rd pin, the other end of the first electric capacity and the first metal-oxide-semiconductor source electrode with first ferric phosphate lithium cell
Negative pole is connected, and the drain electrode of first metal-oxide-semiconductor is connected with one end of first equalizing resistance, the second charge balancing chip
Second pin be connected with one end of the second resistance and one end of the second electric capacity respectively, the second charge balancing chip
5th pin is connected with the grid of second metal-oxide-semiconductor, the other end of the first resistor, the other end of the second electric capacity, second
The source electrode of the 3rd pin, the other end of the first equalizing resistance and the second metal-oxide-semiconductor of charge balancing chip with second phosphoric acid
The negative pole connection of lithium iron battery, the second pin of the 3rd charge balancing chip is electric with one end of 3rd resistor and the 3rd respectively
One end connection of appearance, the 5th pin of the 3rd charge balancing chip is connected with the grid of the 3rd metal-oxide-semiconductor, and described second
The other end of resistance, the other end of the 3rd electric capacity, the 3rd pin, the other end of the second equalizing resistance of the 3rd charge balancing chip
Negative pole with the source electrode of the 3rd metal-oxide-semiconductor with the triphosphoric acid lithium iron battery is connected, the other end of the 3rd resistor and
Positive pole of the other end of three equalizing resistances with the triphosphoric acid lithium iron battery is connected.
In rechargeable lithium ion batteries device of the present invention, the shell is plastic shell or metal shell.
In rechargeable lithium ion batteries device of the present invention, the just extremely LiFePO4 of the ferric phosphate lithium cell,
Negative pole is graphite.
Implement rechargeable lithium ion batteries device of the invention, have the advantages that：Because one end of shell is provided with
Positive terminal and negative terminal, the inside of shell are provided with the lithium battery group being composed in series by more piece ferric phosphate lithium cell, lithium battery
The positive pole of group is connected with positive terminal, and the negative pole of lithium battery group is connected with negative terminal, and using ferric phosphate lithium cell, its battery holds
Amount is larger, can be charged, so its battery capacity is larger, battery can be charged.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation in rechargeable lithium ion batteries device one embodiment of the present invention；
Fig. 2 is the circuit theory diagrams of protection equalizing circuit plate in the embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
In rechargeable lithium ion batteries device embodiment of the present invention, the structural representation of its rechargeable lithium ion batteries device
Figure is as shown in Figure 1.In Fig. 1, the rechargeable lithium ion batteries device includes shell 1, and one end of shell 1 is provided with the He of positive terminal 4
Negative terminal 3, the inside of shell 1 is provided with the lithium battery group 2 being composed in series by more piece ferric phosphate lithium cell, and lithium battery group 2 is just
Pole is connected with positive terminal 4, and the negative pole of lithium battery group 2 is connected with negative terminal 3.Using ferric phosphate lithium cell, ferric phosphate is often saved
The single battery core capacity of lithium battery is 3.2V, phosphoric acid up to 400-500mAh, the single battery core voltage for often saving ferric phosphate lithium cell
The just extremely LiFePO4 of lithium iron battery, negative pole is graphite, and the more conventional battery of battery capacity is big and can be charged.Thus may be used
To avoid causing environmental resource serious pollution and larger waste, be conducive to the sustainable development of society.
Ferric phosphate lithium cell is often saved in the present embodiment, in lithium battery group 2 to be individually packaged with aluminum plastic film or lithium battery group 2
It is overall to be packaged with aluminum plastic film.In the present embodiment, lithium battery group 2 is the 9V Li-ion batteries piles of quickly-chargeable, lithium electricity
Pond group 2 is composed in series by three section ferric phosphate lithium cells, after the ferric phosphate lithium cell of three section windings is sequentially connected in series, then uses plastic-aluminum
Be encapsulated for lithium battery group 2 by film, and the positive and negative electrode of lithium battery group 2 is connected with the positive terminal 4 and negative terminal 3 of shell 1 respectively
Connect.After being completed, then lithium battery group 2 is encapsulated in shell 1.So, the rechargeable lithium ion batteries device discharge range
Between 6.0V-10.2V, between 9.0V-9.6V, discharge capacity is up to 500mAh for discharge platform.In this case it is not required to
Protect equalizing circuit plate, can maximum save space, improve battery capacity.In the present embodiment, shell 1 is plastic shell
Or metal shell.
In the present embodiment, when needing that Balance route will be protected, the inside of shell 1 is at this moment needed to be additionally provided with for protecting
Weighing apparatus circuit board 5, protection equalizing circuit plate 5 is used to realize circuit protection and charge balancing effect, the positive pole and negative pole of lithium battery group 2
Also it is connected with protection equalizing circuit plate 5, is then fixed by PVC sleeve pipes.Particularly as being to save phosphoric acid by the three of winding
Lithium iron battery is connected, and the lithium battery group 2 that then will be composed in series is connected with protection equalizing circuit plate 5, then by lithium battery group 2
Positive pole and negative pole be connected with the positive terminal 4 and negative terminal 3 of shell 1 respectively.After being completed, then by the envelope of battery pack 2
In shell 1.So, between 6.0V-10.2V, discharge platform exists the rechargeable lithium ion batteries device discharge range
Between 9.0V-9.6V, charging upper limit voltage is 10.2V-10.95V, and discharge capacity is up to 450mAh.The chargeable lithium ion
Cell apparatus battery after electricity is finished can be recharged and used, and cycle-index is up to more than 1000 times.
Fig. 2 is the circuit theory diagrams of protection equalizing circuit plate in the present embodiment.In Fig. 2, lithium battery group 3 is by the first ferric phosphate
Lithium battery CELL-1, the second ferric phosphate lithium cell CELL-2 and triphosphoric acid lithium iron battery CELL-3 are in series.Protection is balanced
Circuit board includes protection circuit and charging balanced circuit, and protection circuit and charging balanced circuit are connected, and protection circuit includes protection
Chip U1, the first sampling resistor RVC1, the second sampling resistor RVC2, the 3rd sampling resistor RVC3, charging metal-oxide-semiconductor FET1, electric discharge MOS
Pipe FET2, electric discharge under-voltage protection resistance RDOP, overcurrent protection resistance RVMPWith short-circuit protection resistance RVINI, the first of protection chip U1
Pin is connected with the grid of charging metal-oxide-semiconductor FET1, and the second pin of protection chip U1 passes through overcurrent protection resistance RVMPWith lithium battery
The positive pole B+ connections of group 2, the source electrode of charging metal-oxide-semiconductor FET1 is connected with the positive pole B+ of lithium battery group 2, the leakage of charging metal-oxide-semiconductor FET1
Pole is connected with the drain electrode of electric discharge metal-oxide-semiconductor FET2, and the 3rd pin of protection chip U1 passes through under-voltage protection resistance RDOPWith electric discharge MOS
The grid connection of pipe FET2, the 4th pin of protection chip U1 passes through short-circuit protection resistance RVINIWith the negative pole B- of lithium battery group 2
Connection.
16th pin of protection chip U1 is connected with the source electrode of electric discharge metal-oxide-semiconductor FET2, and the 15th of protection chip U1 draws
Pin and the first sampling resistor RVC1One end connection, the 14th pin and the second sampling resistor R of protection chip U1VC2One end connect
Connect, the 13rd pin and the 3rd sampling resistor R of protection chip U1VC3One end connection, the first sampling resistor RVC1The other end
It is connected with the source electrode of electric discharge metal-oxide-semiconductor FET2 and the positive pole of triphosphoric acid lithium iron battery CELL-3 respectively, the second sampling resistor RVC2's
The other end is connected with the negative pole of triphosphoric acid lithium iron battery CELL-3 and the positive pole of the second ferric phosphate lithium cell CELL-2 respectively, the
Three sampling resistor RVC3The other end respectively with the negative pole and the first ferric phosphate lithium cell of the second ferric phosphate lithium cell CELL-2
The positive pole connection of CELL-1.
When lithium battery group 2 is discharged, external load meets the positive pole B+ and negative pole B- of lithium battery group 2 respectively, and discharge current is flowed through
The positive pole B of single-unit ferric phosphate lithium cell and lithium battery group 2 in negative pole B-, electric discharge metal-oxide-semiconductor FET2, the lithium battery group 2 of lithium battery group 2
+.Electric discharge under-voltage protection resistance RDOP, overcurrent protection resistance RVMPWith short-circuit protection resistance RVINIControl signal output, based on return
The conducting of the electric discharge metal-oxide-semiconductor FET2 in road provides grid voltage, once lithium battery group 2 runs into single lithium battery in discharge process
Under-voltage (the first sampling resistor RVC1, the second sampling resistor RVC2, the 3rd sampling resistor RVC3Sampled voltage it is relatively low), or mistake
Stream and short circuit (overcurrent protection resistance RVMPSampled voltage it is higher) etc. special circumstances, corresponding single lithium battery discharge prevention control
Signal step-down processed, it is impossible to for the electric discharge metal-oxide-semiconductor FET2 in main circuit provides grid bias, turn it off, major loop disconnects, that is, tie
Beam discharge uses process.
In the present embodiment, charging balanced circuit can be carried out in charging process to the battery core voltage of three section ferric phosphate lithium cells
Dynamic equalization, charging balanced circuit includes the first charge balancing chip U2, the second charge balancing chip U3, the 3rd charge balancing core
It is piece U4, first resistor R1, second resistance R2,3rd resistor R3, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, first equal
Weighing apparatus resistance RB01, the second equalizing resistance RB02, the 3rd equalizing resistance RB03, the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2 and the 3rd MOS
The second pin of pipe Q3, the first charge balancing chip U2 connects with one end of first resistor R1 and one end of the first electric capacity C1 respectively
Connect, the 5th pin of the first charge balancing chip U2 is connected with the grid of the first metal-oxide-semiconductor Q1, the of the first charge balancing chip U2
The source electrode of three pins, the other end of the first electric capacity C1 and the first metal-oxide-semiconductor Q1 with the negative pole of the first ferric phosphate lithium cell CELL-1
Connection, the drain electrode of the first metal-oxide-semiconductor Q1 is connected with one end of the first equalizing resistance RB01, and the second of the second charge balancing chip U3 draws
Pin is connected with one end of second resistance R2 and one end of the second electric capacity C2 respectively, the 5th pin of the second charge balancing chip U3 with
The grid connection of the second metal-oxide-semiconductor Q2, the other end of first resistor R1, the other end of the second electric capacity C2, the second charge balancing chip
The source electrode of the 3rd pin, the other end of the first equalizing resistance RB01 and the second metal-oxide-semiconductor Q2 of U3 with the second ferric phosphate lithium cell
The negative pole connection of CELL-2, the second pin of the 3rd charge balancing chip U4 one end respectively with 3rd resistor R3 and the 3rd electric capacity
One end connection of C3, the 5th pin of the 3rd charge balancing chip U4 is connected with the grid of the 3rd metal-oxide-semiconductor Q3, second resistance R2's
The other end, the other end of the 3rd electric capacity C3, the 3rd pin of the 3rd charge balancing chip U4, the second equalizing resistance RB02 it is another
Negative pole of the source electrode of end and the 3rd metal-oxide-semiconductor Q3 with triphosphoric acid lithium iron battery CELL-3 is connected, the other end of 3rd resistor R3
Positive pole with the other end of the 3rd equalizing resistance RB03 with triphosphoric acid lithium iron battery CELL-3 is connected.
General lithium battery uses constant current-constant-pressure type charge control, and during constant-voltage charge, the approximate exponential law of charging current subtracts
It is small.In charging process, main circuit current is by single-unit phosphoric acid in positive pole B+, charging metal-oxide-semiconductor FET1, the lithium battery group 2 of battery pack 2
The positive pole B- of lithium iron battery and battery pack 2.There is no equalization function in view of protection chip U1, one is increased in the present embodiment and is filled
Electrical equalization circuit.In charging process, the first charge balancing chip U2, the second charge balancing chip U3 and the 3rd fill lithium battery group 2
Electrical equalization chip U4 is by the first resistor R1 of each ferric phosphate lithium cell of collection analysis, second resistance R2,3rd resistor R3
Signal carries out instruction transmission.The charging voltage of single-unit ferric phosphate lithium cell is 3.65V, when the first charge balancing chip U2, second
Charge balancing chip U3 or the 3rd charge balancing chip U4 detect certain ferric phosphate lithium cell voltage reach 3.6V after, its will
Send turn-on command and give control the first metal-oxide-semiconductor Q1 or the second metal-oxide-semiconductor Q2 or the 3rd metal-oxide-semiconductor Q3, corresponding first equalizing resistance
RB01, the second equalizing resistance RB02, the 3rd equalizing resistance RB03 will be discharged by certain electric current, and (euqalizing current is in 44mA
Left and right).Charge main telegram in reply road, equalizing circuit will not be interfere with each other while work, after major loop terminates, such as certain section LiFePO4 electricity
The voltage in pond is still above 3.6V, then charging balanced circuit continues to turn on electric discharge.So it is achieved that charging electric state equalization function.
In a word, in the present embodiment, the lithium battery group being composed in series by using more piece ferric phosphate lithium cell, makes lithium battery
Pool-size is larger and with quick-charge function.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (4)
1. a kind of rechargeable lithium ion batteries device, it is characterised in that including shell, one end of the shell is provided with positive terminal
And negative terminal, the inside of the shell is provided with the lithium battery group being composed in series by more piece ferric phosphate lithium cell, the lithium battery
The positive pole of group is connected with the positive terminal, and the negative pole of the lithium battery group is connected with the negative terminal；
The inside of the shell is additionally provided with the protection equalizing circuit plate for realizing circuit protection and charge balancing effect, the lithium
The positive pole and negative pole of battery pack are also connected with the protection equalizing circuit plate；
The lithium battery group is by the series connection of the first ferric phosphate lithium cell, the second ferric phosphate lithium cell and triphosphoric acid lithium iron battery
Into；
The protection equalizing circuit plate includes protection circuit and charging balanced circuit, and the protection circuit and charging balanced circuit connect
Connect, the protection circuit include protection chip, the first sampling resistor, the second sampling resistor, the 3rd sampling resistor, charging metal-oxide-semiconductor,
Electric discharge metal-oxide-semiconductor, electric discharge under-voltage protection resistance, overcurrent protection resistance and short-circuit protection resistance, the first pin of the protection chip
Grid with the charging metal-oxide-semiconductor is connected, and the second pin of the protection chip is by the overcurrent protection resistance and the lithium
The positive pole connection of battery pack, the source electrode of the charging metal-oxide-semiconductor is connected with the positive pole of the lithium battery group, the charging metal-oxide-semiconductor
Drain and be connected with the drain electrode of the electric discharge metal-oxide-semiconductor, the 3rd pin of the protection chip is by the under-voltage protection resistance and institute
The grid connection of electric discharge metal-oxide-semiconductor is stated, the 4th pin of the protection chip passes through the short-circuit protection resistance and the lithium battery
The negative pole connection of group, the 16th pin of the protection chip is connected with the source electrode of the electric discharge metal-oxide-semiconductor, the protection chip
15th pin is connected with one end of first sampling resistor, the 14th pin and described second sampling of the protection chip
One end connection of resistance, the 13rd pin of the protection chip is connected with one end of the 3rd sampling resistor, and described first
The other end of sampling resistor is connected with the source electrode and the positive pole of triphosphoric acid lithium iron battery of the electric discharge metal-oxide-semiconductor respectively, and described the
The other end of two sampling resistors connects with the negative pole of the triphosphoric acid lithium iron battery and the positive pole of the second ferric phosphate lithium cell respectively
Connect, the other end of the 3rd sampling resistor respectively with the negative pole and the first ferric phosphate lithium cell of second ferric phosphate lithium cell
Positive pole connection；
Ferric phosphate lithium cell is often saved in the lithium battery group to be individually packaged with aluminum plastic film or the lithium battery group integrally uses institute
Aluminum plastic film is stated to be packaged.
2. rechargeable lithium ion batteries device according to claim 1, it is characterised in that the charging balanced circuit first
Charge balancing chip, the second charge balancing chip, the 3rd charge balancing chip, first resistor, second resistance, 3rd resistor,
One electric capacity, the second electric capacity, the 3rd electric capacity, the first equalizing resistance, the second equalizing resistance, the 3rd equalizing resistance, the first metal-oxide-semiconductor,
Two metal-oxide-semiconductors and the 3rd metal-oxide-semiconductor, the second pin of the first charge balancing chip respectively with one end of the first resistor and
One end connection of one electric capacity, the 5th pin of the first charge balancing chip is connected with the grid of first metal-oxide-semiconductor, described
The source electrode of the 3rd pin, the other end of the first electric capacity and the first metal-oxide-semiconductor of the first charge balancing chip with first phosphoric acid
The negative pole connection of lithium iron battery, the drain electrode of first metal-oxide-semiconductor is connected with one end of first equalizing resistance, and described second fills
The second pin of electrical equalization chip is connected with one end of the second resistance and one end of the second electric capacity respectively, and described second charges
5th pin of balancing chip is connected with the grid of second metal-oxide-semiconductor, the other end of the first resistor, the second electric capacity it is another
One end, the 3rd pin, the other end of the first equalizing resistance and the second metal-oxide-semiconductor of the second charge balancing chip source electrode with it is described
The negative pole connection of the second ferric phosphate lithium cell, the second pin of the 3rd charge balancing chip respectively with one end of 3rd resistor
One end with the 3rd electric capacity connects, and the 5th pin of the 3rd charge balancing chip is connected with the grid of the 3rd metal-oxide-semiconductor,
The other end of the second resistance, the other end of the 3rd electric capacity, the 3rd pin, second equalizing resistance of the 3rd charge balancing chip
The other end and the negative pole of the source electrode with the triphosphoric acid lithium iron battery of the 3rd metal-oxide-semiconductor be connected, the 3rd resistor it is another
Positive pole of the other end of one end and the 3rd equalizing resistance with the triphosphoric acid lithium iron battery is connected.
3. rechargeable lithium ion batteries device according to claim 1 and 2, it is characterised in that the shell is outside plastic cement
Shell or metal shell.
4. rechargeable lithium ion batteries device according to claim 3, it is characterised in that the ferric phosphate lithium cell is just
Extremely LiFePO4, negative pole is graphite.
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| CN107895976A (en) * | 2017-10-11 | 2018-04-10 | 惠州市和京新能源科技有限公司 | A kind of lithium battery equalization charging circuit |
| CN111082176B (en) * | 2020-01-03 | 2020-08-25 | 江苏华鹏智能仪表科技股份有限公司 | Automatic charging equipment for lithium battery production detection |
| CN111711236A (en) * | 2020-06-03 | 2020-09-25 | 上海艾可慕通讯科技有限公司 | Charging system and charging method of talkback battery pack |
| CN114814596A (en) * | 2022-03-09 | 2022-07-29 | 深圳市南霸科技有限公司 | A power detection device |
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| CN103718345A (en) * | 2012-03-15 | 2014-04-09 | 株式会社东芝 | Lithium-ion rechargeable battery |
| CN104659409A (en) * | 2013-11-22 | 2015-05-27 | 兰阳能源科技公司 | Novel lithium ion battery |
| CN204834734U (en) * | 2015-07-03 | 2015-12-02 | 广州市融成锂能锂电池有限公司 | Chargeable lithium ion battery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103718345A (en) * | 2012-03-15 | 2014-04-09 | 株式会社东芝 | Lithium-ion rechargeable battery |
| CN104659409A (en) * | 2013-11-22 | 2015-05-27 | 兰阳能源科技公司 | Novel lithium ion battery |
| CN204834734U (en) * | 2015-07-03 | 2015-12-02 | 广州市融成锂能锂电池有限公司 | Chargeable lithium ion battery device |
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