CN101394101B - Charging and discharging balance device for lithium ion power battery group - Google Patents
Charging and discharging balance device for lithium ion power battery group Download PDFInfo
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- CN101394101B CN101394101B CN2008101571052A CN200810157105A CN101394101B CN 101394101 B CN101394101 B CN 101394101B CN 2008101571052 A CN2008101571052 A CN 2008101571052A CN 200810157105 A CN200810157105 A CN 200810157105A CN 101394101 B CN101394101 B CN 101394101B
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 42
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 42
- 238000007600 charging Methods 0.000 title claims description 28
- 238000007599 discharging Methods 0.000 title claims description 17
- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 239000000178 monomer Substances 0.000 claims description 35
- 239000003381 stabilizer Substances 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052744 lithium Inorganic materials 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A charge and discharge balancing device for a power lithium battery pack comprises a charge and discharge module, a plurality of single cell lithium batteries which are connected with each other in series, a single chip, a positive ring, a negative ring, an electrical motor, a balancing battery and fixed contacts used for connecting the positive pole and the negative pole of each single cell lithium battery. The positive poles and the negative poles of each single cell lithium battery are connected with the input terminal of the single chip; the output terminal of the single chip is connected with the charge and discharge module and the electrical motor; a rotating block is fixed on the main shaft of the electrical motor, a positive moving contact electrically connected with the positive ring and a negative moving contact electrically connected with the negative ring are respectively fixed on the rotating block, and the positive moving contact and the negative moving contact are respectively and electrically connected with two adjacent fixed contacts; and the positive pole of the balancing battery is connected with the positive ring and the negative pole of the balancing battery is electrically connected with the negative ring, and the balancing battery can be replaced by an ultra capacitor. The invention has a simple circuit structure and low cost, is safe and reliable, and can prolong the service life of the power lithium battery pack.
Description
Technical field
The present invention relates to the power lithium-ion battery field, specifically, relate to a kind of charging and discharging balance device for lithium ion power battery group.
Background technology
The voltage of power lithium-ion battery group is by the cell quantity decision of series connection, and capacity then is the cell quantity decision by parallel connection.The voltage range of each cell just can obtain needed voltage 2V～5V (relevant with the positive electrode of dynamic lithium battery) so the power lithium-ion battery series connection need be used.During perfect condition, each cell performance should be consistent, the voltage that is each cell is certain, but because foozle, self-discharge rate, the factors such as discreteness of attenuation degree between cell in the use, voltage capacity between the cell can be discrepant, in manufacture process and the entire product life cycle, the distribution of the variation of cell capacity and self discharge leakage contribution cell voltage, so working power lithium ion battery management circuit improves the performance and the life-span of the power lithium-ion battery of series connection use, is the method for the most effective management cell.A good equalizing circuit can be reacted rapidly to unusual cell.Existing conventional cell equalization has two kinds, promptly passive equalization and active equalization.
Three kinds of passive equalizations, passive equalization has three kinds: 1) the direct structure in parallel with cell of resistance, 2) structure of the resistance parallel connection of switch control, 3) structure of employing zener diode, now structures that adopt with the resistance parallel connection of switch control more, with resistance of switching circuit series connection, when monomer voltage is higher than predefined magnitude of voltage, switch connection.When monomer voltage was lower than predefined magnitude of voltage, switch cut out.This structure need be measured monomer voltage, can increase cost, and the very big power loss of generation on the resistance that is increased in owing to bleeder resistance, this loss is relevant with resistance value and size of current, there is time enough to finish balancing procedure, can cause overvoltage when high-capacity dynamical lithium-ion battery is charged with peak power, particularly evident to lithium iron phosphate dynamic battery especially, this usual manner prevents that overvoltage is powerless.
The active equalizing circuit
The passive balanced time that needs of the time ratio that the active equalizing circuit is wanted is short, and the voltage distribution precision equates, and parasitic loss is little.If reach capacity voltage, circuit carries out equilibrium by a bypass effect that is connected in parallel on the small-power resistance on the cell.The effect of this resistance is identical with passive balance-type.But because euqalizing current is big, balanced time course can be very short.When being lower than limiting voltage, resistance is inoperative.Charging current can be very big, and when bypass segment worked, electric current can be higher, but will be subjected to the restriction (general upper limit current 100mA) of parallel resistance, so this circuit can not be used in electric motor car.Because during car brakeing, the charging current that feedback braking produces is much larger than 100mA, and this can damage entire circuit, and the charging of electric motor car feedback braking is with ineffective and meaning will to reach several amperes (when looking regenerative braking the speed of a motor vehicle and determine).
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of circuit structure simple, cost is low, safe and reliable charging and discharging balance device for lithium ion power battery group.
The technical scheme that realizes above-mentioned purpose is: a kind of charging and discharging balance device for lithium ion power battery group, comprise charge-discharge modules and a plurality of monomer lithium ion batteries that are cascaded, also comprise single-chip microcomputer, anode ring, the negative pole ring, motor, balancing battery and just connect each cell, the fixed contact of negative pole, each monomer lithium ion battery just, negative pole all is connected with the input of single-chip microcomputer, the output of single-chip microcomputer is electrically connected with charge-discharge modules and motor respectively, be fixed with spill spin block on the main shaft of motor, be fixed with anodal moving contact that is electrically connected with anode ring and the negative pole moving contact that is electrically connected with the negative pole ring on the spill spin block respectively, and anodal moving contact and negative pole moving contact are electrically connected with adjacent two fixed contacts respectively, the positive pole of balancing battery is electrically connected with anode ring, and the negative pole of balancing battery is electrically connected with the negative pole ring.
Further, be parallel with a switch equalizing circuit on the balancing battery.
After adopting technique scheme, the positive pole of balancing battery is electrically connected with anodal moving contact on the spill spin block by anode ring, the negative pole of balancing battery is electrically connected with negative pole moving contact on the spill spin block by the negative pole ring, during charging, spill spin block rotates under the drive of motor, and drive anodal moving contact and negative pole moving contact and be electrically connected with the both positive and negative polarity of each cell in the power lithium-ion battery group circularly respectively, when power lithium-ion battery reaches each preset lower limit, balancing battery begins initiatively balanced operation, when if the voltage of a certain cell is higher than balancing battery, balancing battery is stored in energy storage in the balancing battery with absorption current, the monomer electric current that is equivalent to release in the internal resistance equalization plays the bypass effect and carries out balanced function, when touching a certain monomer battery voltage and be lower than balancing battery, balancing battery will fill the electric energy rapid release that stores to this cell, the voltage of this cell raises rapidly, and the like the periodic duty equilibrium between each cell.
In power ion battery group discharge process, because the variation of the various operating modes of each monomer, voltage between each monomer and capacity will produce notable difference, at this moment balancing battery will be to each cell balanced discharge, if the voltage of a certain cell that moving contact touches is lower than balancing battery, balancing battery will be to this cell complementary energy of charging rapidly, until with the balancing battery balance of voltage.When touching a certain monomer battery voltage and be higher than balancing battery, promptly charging releases energy this cell to balancing battery, the energy between balanced each monomer of work that the rest may be inferred.
In a word, when discharging and recharging, the present invention can each cell is too high voltage absorb and to be stored in the balancing battery, and also can the cell of brownout be charged rapidly, thereby the cell that keeps making series connection charges, is in all the time when discharging balanced consistent state, make each cell life-saving, can not influence the available capacity and the life-span of entire lithium ion battery group because of the capacity attenuation of a certain cell.
The another kind of technical scheme that realizes above-mentioned purpose is: a kind of charging and discharging balance device for lithium ion power battery group, comprise charge-discharge modules and a plurality of monomer lithium ion batteries that are cascaded, also comprise single-chip microcomputer, anode ring, the negative pole ring, motor, super capacitor and just connect each cell, the fixed contact of negative pole, each monomer lithium ion battery just, negative pole all is connected with the input of single-chip microcomputer, the output of single-chip microcomputer is connected with motor, be fixed with spill spin block on the main shaft of motor, be fixed with anodal moving contact that is electrically connected with anode ring and the negative pole moving contact that is electrically connected with the negative pole ring on the spill spin block respectively, and anodal moving contact and negative pole moving contact are electrically connected with adjacent two fixed contacts respectively, the positive pole of super capacitor is connected with anode ring, and the negative pole of super capacitor is electrically connected with the negative pole ring.
By paralleling switch equalizing circuit in equilibrium, make that the switch equalizing circuit can be forced big electric current release voltage, can not overcharge with absolute assurance cell when overcharging especially unusually appearred in charging system.
Another kind of technical scheme of the present invention is: a kind of charging and discharging balance device for lithium ion power battery group, comprise charge-discharge modules and a plurality of monomer lithium ion batteries that are cascaded, also comprise single-chip microcomputer, anode ring, the negative pole ring, motor, super capacitor and just connect each cell, the fixed contact of negative pole, each monomer lithium ion battery just, negative pole all is connected with the input of single-chip microcomputer, the output of single-chip microcomputer is connected with motor with charge-discharge modules respectively, be fixed with spill spin block on the main shaft of motor, be fixed with anodal moving contact that is electrically connected with anode ring and the negative pole moving contact that is electrically connected with the negative pole ring on the spill spin block respectively, and anodal moving contact and negative pole moving contact are electrically connected with adjacent two fixed contacts respectively, the positive pole of super capacitor is electrically connected with anode ring, and the negative pole of super capacitor is electrically connected with the negative pole ring.
This scheme is compared with first kind of technical scheme, has just changed balancing battery into super capacitor.Its operation principle is the same with first kind of scheme, can reach the purpose and the technique effect of foregoing first kind of scheme equally.
Description of drawings
Fig. 1 is the circuit theory diagrams of first kind of technical scheme of the present invention;
Fig. 2 is the winding diagram of first kind of technical scheme of the present invention;
Fig. 3 is the circuit theory diagrams of switch equalizing circuit of the present invention;
Fig. 4 is the circuit theory diagrams of second kind of technical scheme of the present invention;
Fig. 5 is the winding diagram of second kind of technical scheme of the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
Embodiment one
As Fig. 1, shown in 2, a kind of charging and discharging balance device for lithium ion power battery group, comprise charge-discharge modules 1 and a plurality of monomer lithium ion batteries that are cascaded, also comprise single-chip microcomputer 2, anode ring 3, negative pole ring 4, motor 5, balancing battery 6 and just connect each cell, the fixed contact 7 of negative pole, each monomer lithium ion battery just, negative pole all is connected with the input of single-chip microcomputer 2, the output of single-chip microcomputer 2 is electrically connected with charge-discharge modules 1 and motor 5 respectively, be fixed with spill spin block 8 on the main shaft of motor 5, be fixed with anodal moving contact 9 that is electrically connected with anode ring 3 and the negative pole moving contact 10 that is electrically connected with negative pole ring 4 on the spill spin block 8 respectively, and anodal moving contact 9 and negative pole moving contact 10 are electrically connected with adjacent two fixed contacts 7 respectively, the positive pole of balancing battery 6 is electrically connected with anode ring 3, and the negative pole of balancing battery 6 is electrically connected with negative pole ring 4.Single-chip microcomputer 2 adopts 890 chips.Motor 5 adopts stepping motor or reducing motor.
As shown in Figure 1, 2, be parallel with a switch equalizing circuit 11 on the balancing battery 6.
As shown in Figure 3, switch equalizing circuit 11 is made up of first resistance R 1, second resistance R 2, the 3rd resistance R W, voltage-stabiliser tube DW and triode BG1, the positive pole of first resistance R 1 is connected with the positive pole of balancing battery 6, the negative pole of first resistance R 1 is connected with the negative pole of voltage-stabiliser tube DW, the positive pole of voltage-stabiliser tube DW is connected with the base stage of triode BG1, the 3rd resistance R W is connected the collector electrode of triode BG1, the positive pole of second resistance R 2 is connected with the negative pole of first resistance R 1, and the negative pole of second resistance R 2 is connected with the negative pole of balancing battery 6.
The operation principle of embodiment one is as follows: during charging, spill spin block 8 rotates under the drive of motor 5, and drive anodal moving contact 9 and negative pole moving contact 10 and be electrically connected with the both positive and negative polarity of each cell in the power lithium-ion battery group circularly respectively, when power lithium-ion battery reaches each preset lower limit, balancing battery 6 beginnings are balanced operation initiatively, when if the voltage of a certain cell is higher than balancing battery 6, balancing battery 6 is stored in energy storage in the balancing battery 6 with absorption current, the monomer electric current that is equivalent to release in the internal resistance equalization plays the bypass effect and carries out balanced function, when touching a certain monomer battery voltage and be lower than balancing battery 6, balancing battery 6 will fill the electric energy rapid release that stores to this cell, the voltage of this cell raises rapidly, and the like the periodic duty equilibrium between each cell.
In power ion battery group discharge process, because the variation of the various operating modes of each monomer, voltage between each monomer and capacity will produce notable difference, at this moment balancing battery 6 will be to each cell balanced discharge, if the voltage of a certain cell that moving contact touches is lower than balancing battery 6, balancing battery 6 will be to this cell complementary energy of charging rapidly, until with balancing battery 6 balances of voltage.When touching a certain monomer battery voltage and be higher than balancing battery 6, promptly 6 chargings release energy this cell to balancing battery, the energy between balanced each monomer of work that the rest may be inferred.
Embodiment two
As Fig. 4, shown in 5, a kind of charging and discharging balance device for lithium ion power battery group, comprise charge-discharge modules (1) and a plurality of monomer lithium ion batteries that are cascaded, also comprise single-chip microcomputer 2, anode ring 3, negative pole ring 4, motor 5, balancing battery 6 and just connect each cell, the fixed contact 7 of negative pole, each monomer lithium ion battery just, negative pole all is connected with the input of single-chip microcomputer 2, the output of single-chip microcomputer 2 is electrically connected with charge-discharge modules 1 and motor 5 respectively, be fixed with spill spin block 8 on the main shaft of motor 5, be fixed with anodal moving contact 9 that is electrically connected with anode ring 3 and the negative pole moving contact 10 that is electrically connected with negative pole ring 4 on the spill spin block 8 respectively, and anodal moving contact 9 and negative pole moving contact 10 are electrically connected with adjacent two fixed contacts 7 respectively, the positive pole of balancing battery 6 is electrically connected with anode ring 3, and the negative pole of balancing battery 6 is electrically connected with negative pole ring 4.Shell fragment machine 2 adopts 890 chips.Motor 5 adopts stepping motor or reducing motor.
Shown in Fig. 4,5, be parallel with a switch equalizing circuit 11 on the balancing battery 6.Circuit theory diagrams shown in Figure 3 among the circuit theory diagrams of this switch equalizing circuit and the embodiment one are identical.
The operation principle of embodiment two is as follows: during charging, spill spin block 8 rotates under the drive of motor 5, and drive anodal moving contact 9 and negative pole moving contact 10 and be electrically connected with the both positive and negative polarity of each cell in the power lithium-ion battery group circularly respectively, when power lithium-ion battery reaches each preset lower limit, super capacitor 12 beginnings are balanced operation initiatively, when if the voltage of a certain cell is higher than super capacitor 12, super capacitor 12 is stored in energy storage in the super capacitor 12 with absorption current, the monomer electric current that is equivalent to release in the internal resistance equalization plays the bypass effect and carries out balanced function, when touching a certain monomer battery voltage and be lower than super capacitor 12, super capacitor 12 will fill the electric energy rapid release that stores to this cell, the voltage of this cell raises rapidly, and the like the periodic duty equilibrium between each cell.
In power ion battery group discharge process, because the variation of the various operating modes of each monomer, voltage between each monomer and capacity will produce notable difference, at this moment super capacitor 12 will be to each cell balanced discharge, if the voltage of a certain cell that moving contact touches is lower than super capacitor 12, super capacitor 12 will be to this cell complementary energy of charging rapidly, until with super capacitor 12 balances of voltage.When touching a certain monomer battery voltage and be higher than super capacitor 12, promptly 12 chargings release energy this cell to super capacitor, the energy between balanced each monomer of work that the rest may be inferred.
Claims (6)
1. charging and discharging balance device for lithium ion power battery group, comprise charge-discharge modules (1) and a plurality of monomer lithium ion batteries that are cascaded, it is characterized in that: also comprise single-chip microcomputer (2), anode ring (3), negative pole ring (4), motor (5), balancing battery (6) and just connect each cell, the fixed contact of negative pole (7), each monomer lithium ion battery just, negative pole all is connected with the input of single-chip microcomputer (2), the output of single-chip microcomputer (2) is electrically connected with charge-discharge modules (1) and motor (5) respectively, be fixed with spill spin block (8) on the main shaft of motor (5), be fixed with anodal moving contact (9) that is electrically connected with anode ring (3) and the negative pole moving contact (10) that is electrically connected with negative pole ring (4) on the spill spin block (8) respectively, and anodal moving contact (9) and negative pole moving contact (10) are electrically connected with adjacent two fixed contacts (7) respectively, the positive pole of balancing battery (6) is electrically connected with anode ring (3), and the negative pole of balancing battery (6) is electrically connected with negative pole ring (4).
2. charging and discharging balance device for lithium ion power battery group according to claim 1 is characterized in that: be parallel with a switch equalizing circuit (11) on the balancing battery (6).
3. charging and discharging balance device for lithium ion power battery group according to claim 2, it is characterized in that: switch equalizing circuit (11) is by first resistance (R1), second resistance (R2), the 3rd resistance (RW), voltage-stabiliser tube (DW) and triode (BG1) are formed, the positive pole of first resistance (R1) is connected with the positive pole of balancing battery (6), the negative pole of first resistance (R1) is connected with the negative pole of voltage-stabiliser tube (DW), the positive pole of voltage-stabiliser tube (DW) is connected with the base stage of triode (BG1), the 3rd resistance (RW) is connected the collector electrode of triode (BG1), the positive pole of second resistance (R2) is connected with the negative pole of first resistance (R1), and the negative pole of second resistance (R2) is connected with the negative pole of balancing battery (6).
4. charging and discharging balance device for lithium ion power battery group, comprise charge-discharge modules (1) and a plurality of monomer lithium ion batteries that are cascaded, it is characterized in that: also comprise single-chip microcomputer (2), anode ring (3), negative pole ring (4), motor (5), super capacitor (12) and just connect each cell, the fixed contact of negative pole (7), each monomer lithium ion battery just, negative pole all is connected with the input of single-chip microcomputer (2), the output of single-chip microcomputer (2) is electrically connected with charge-discharge modules (1) and motor (5) respectively, be fixed with spill spin block (8) on the main shaft of motor (5), be fixed with anodal moving contact (9) that is electrically connected with anode ring (3) and the negative pole moving contact (10) that is electrically connected with negative pole ring (4) on the spill spin block (8) respectively, and anodal moving contact (9) and negative pole moving contact (10) are electrically connected with adjacent two fixed contacts (7) respectively, the positive pole of super capacitor (12) is electrically connected with anode ring (3), and the negative pole of super capacitor (12) is electrically connected with negative pole ring (4).
5. charging and discharging balance device for lithium ion power battery group according to claim 4 is characterized in that: be parallel with a switch equalizing circuit (11) on the super capacitor (12).
6. charging and discharging balance device for lithium ion power battery group according to claim 5 is characterized in that:
Switch equalizing circuit (11) is by first resistance (R1), second resistance (R2), the 3rd resistance (RW), voltage-stabiliser tube (DW) and triode (BG1) are formed, the positive pole of first resistance (R1) is connected with the positive pole of super capacitor, the negative pole of first resistance (R1) is connected with the negative pole of voltage-stabiliser tube (DW), the positive pole of voltage-stabiliser tube (DW) is connected with the base stage of triode (BG1), the 3rd resistance (RW) is connected the collector electrode of triode (BG1), the positive pole of second resistance (R2) is connected with the negative pole of first resistance (R1), and the negative pole of second resistance (R2) is connected with the negative pole of super capacitor (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101571052A CN101394101B (en) | 2008-09-25 | 2008-09-25 | Charging and discharging balance device for lithium ion power battery group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101571052A CN101394101B (en) | 2008-09-25 | 2008-09-25 | Charging and discharging balance device for lithium ion power battery group |
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| Publication Number | Publication Date |
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| CN101394101A CN101394101A (en) | 2009-03-25 |
| CN101394101B true CN101394101B (en) | 2010-07-21 |
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| CN2008101571052A Expired - Fee Related CN101394101B (en) | 2008-09-25 | 2008-09-25 | Charging and discharging balance device for lithium ion power battery group |
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| CN101826642B (en) * | 2009-12-11 | 2012-11-14 | 清华大学 | Electromechanical gating device in battery active balance system |
| CN102376979B (en) * | 2010-08-13 | 2015-09-30 | 周金平 | The lithium-ion-power cell series battery of charging-discharging automatic balancing |
| CN102185159B (en) * | 2011-04-19 | 2013-08-14 | 吴粤滨 | Basic unit lithium battery pack module, multistage lithium battery pack and charge and discharge equilibrium method |
| WO2013003869A1 (en) * | 2011-06-15 | 2013-01-03 | De Vries Ian Douglas | Capacitively coupled cell balancer with a common ac bus |
| CN102624049B (en) * | 2012-03-14 | 2013-11-20 | 曹秉刚 | Switching system for active equalization of battery |
| CN103715728B (en) * | 2012-10-06 | 2021-07-06 | 肖慧 | Equalizing circuit and device for series battery pack |
| CN103137935B (en) * | 2013-03-13 | 2015-06-10 | 江苏华富储能新技术股份有限公司 | Conversion device for mutually converting serial connection and parallel connection among monomers or modules in battery pack |
| CN109120251A (en) * | 2017-06-22 | 2019-01-01 | 付允念 | A kind of the MOS switch driving circuit and its array of series battery cells management system |
| CN108803855B (en) * | 2018-05-29 | 2020-10-02 | 宁波扇贝科技有限公司 | A but, endurance electrical power generating system for computer |
| CN108616163B (en) * | 2018-05-29 | 2021-11-02 | 常州信息职业技术学院 | Computer power supply system for standby power supply |
| CN110873846B (en) * | 2018-08-31 | 2021-09-14 | 宁德时代新能源科技股份有限公司 | Current limit value acquisition method and device and storage medium |
| CN109617209B (en) * | 2018-12-28 | 2022-05-17 | 南京大学 | Method and system for charging and discharging of ferroelectric refrigerator |
| CN110010986B (en) * | 2019-03-29 | 2020-12-18 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN110086220B (en) * | 2019-04-18 | 2021-10-22 | 重庆宜邦科技有限责任公司 | Periodic voltage balancing method for single batteries of energy storage battery pack |
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