CN101867210A - Series power storage battery energy non-dissipative type equalization charging circuit - Google Patents
Series power storage battery energy non-dissipative type equalization charging circuit Download PDFInfo
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- CN101867210A CN101867210A CN 201010200838 CN201010200838A CN101867210A CN 101867210 A CN101867210 A CN 101867210A CN 201010200838 CN201010200838 CN 201010200838 CN 201010200838 A CN201010200838 A CN 201010200838A CN 101867210 A CN101867210 A CN 101867210A
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- 238000004146 energy storage Methods 0.000 claims abstract description 18
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
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Abstract
The invention discloses a power storage battery energy non-dissipative type equalization charging circuit, and in a battery pack comprising multiple sections of power storage batteries, an equalization circuit module is connected beside each single battery, each equalization module comprises an energy storage inductor, a switching device and a diode, and the equalization modules are symmetrically distributed at both sides of the battery pack. When the switching device Sn in each equalization module is turned on, the charging and the energy storage for an inductor Ln is carried out by a corresponding battery Bn, and the current linearity of the inductor is increased; when the Sn is turned off, the energy in the inductor Ln continuously flows into other storage batteries through the diode, the energy storage induction of the upstream battery continuously flows into the downstream battery through the diode, and the energy storage induction of the downstream battery continuously flows into the upstream battery through the diode. By regulating the turn-on and turn-off time of the switching device in an equalization circuit, the energy transfer speed can be effectively regulated, the difference among all the single batteries is eliminated, the cycle service life of the battery pack is prolonged, and the power storage battery energy non-dissipative type equalization charging circuit has larger application value.
Description
Technical field
The present invention relates to power accumulator group charging field, relate in particular to a kind of energy non-dissipative type equalization charging circuit of power accumulator group.
Background technology
The series power storage battery group has very widely to be used, especially needing the series connection of more piece storage battery just can reach the occasion of power demand requirement, as powerful instrument, ups power, electric bicycle and electric automobile etc.Usually the batteries that is in series is installed in the box body, and it is done as a whole the charging in the practical application.Because the difference between battery, certainly will cause each cell state-of-charge inconsistent through repeatedly charge and discharge cycles, the result shortens the useful life of battery pack greatly.Thereby a kind of effective balanced charging method, remedy the battery inconsistency of performance in use, bring into play the effectiveness of power accumulator to greatest extent, have crucial meaning.
The traditional charge equalization method first adopt passive mode realize cell capacity before charging balance or, its two equalizing circuit that is to use the energy consumption type.(1) capacitance balance is the discharge type equilibrium before the charging: before batteries charging each cell is added identical load, battery pack is charged until each single electric battery discharge to same capacity again.The equilibrium of each battery before the method can guarantee to charge, but the difference owing to each battery still might produce unbalanced phenomena in charging process, is difficult to reach ideal effect.This mode is applicable to the not high and less occasion of series connection storage battery number of equalization request, and the danger of overdischarge easily takes place in the discharge of each cell.(2) being full of additional balance behind the electricity, promptly to adopt trickle to replenish balanced:, use the trickle electric current instead and continue charging when finishing at battery charging.At this moment, the cell that capacity is full can not continue to accept energy, and the battery of underfill can continue to keep charging, all is full of until each cell.This equalization methods is simple, but when capacity volume variance between each cell is big, needs through the long trickle charge time battery pack balance is full of, and the long charging interval may cause certain over-charging of battery, battery damages.The trickle charge method only is applicable in the secondary cells such as lead acid accumulator, cadmium nickel and ni-mh, can not use in lithium ion battery, and certain limitation is arranged.(3) energy dissipation type equilibrium: main by shunt resistance realization in parallel on each cell in batteries, this equalizing circuit is simple in structure, in the batteries charging process, just can realize equilibrium, implementation mainly consumes the energy of high power capacity cell by shunting, thereby this method mainly exists energy dissipation and heat dissipation problem.
From the above, still be the method for poor efficiency or power consumption in the current battery group charge balancing, still lack the efficient equalization charging circuit of energy non-dissipative type.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of series power storage battery energy non-dissipative type equalization charging circuit is provided.
Realization technical scheme of the present invention is: in the battery pack of being made up of the more piece power accumulator, the other equalizing circuit module that all is connected to of each cell, each balance module is made of energy storage inductor, switching device and diode, is distributed in the both sides of battery pack symmetrically.Switching device S in balance module
nWhen opening, respective battery B
nTo inductance L
nThe charging energy storage, inductive current is linear to rise, and works as S
nDuring shutoff, inductance L
nIn energy by diode continuousing flow in other storage battery, the energy storage inductor of upstream battery by diode continuousing flow to the downstream battery, the energy storage inductor of downstream battery then by diode continuousing flow in the battery of upstream.By regulating the turn-on and turn-off time of switching device in the equalizing circuit, can effectively regulate the energy transfer velocity, eliminate each cell difference.
The invention has the beneficial effects as follows:
1. the dynamic assignment of energy in charging process between the realization storage battery reduces the inconsistency of battery pack.
2. realize the dynamic transfer of electrokinetic cell energy between charge period by energy storage inductor, overcome energy loss in the balancing procedure, the long shortcoming of time for balance, meet environmental protection and energy saving, improved balanced efficient.
3. both brought into play the effectiveness of storage battery, and can prolong the useful life of battery pack again, and equalizing circuit is easy to expansion.
Description of drawings
Accompanying drawing is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail.
Core of the present invention is the other equalizing circuit module M that all is connected to of each series-connected cell
n, each equalizing circuit module is made up of energy storage inductor, switching device and diode, is distributed in the both sides of battery pack symmetrically.As balance module M
nIn switching device S
nWhen opening, battery B
nTo inductance L
nThe charging energy storage, inductive current is linear to rise, and works as S
nDuring shutoff, inductance L
nIn energy by diode continuousing flow in other storage battery.The energy storage inductor of upstream battery by diode continuousing flow to the downstream battery, the energy storage inductor of downstream battery then by diode continuousing flow in the battery of upstream.Switching device conducting simultaneously in each equalizing circuit, its break-make is controlled by the pwm pulse of controller output, regulates the size of PWM duty ratio, can effectively regulate the energy transfer velocity.
The course of work of series power storage battery energy non-dissipative type equalization charging circuit of the present invention is:
1, in switching tube conduction period, inductance L
nEnergy storage, electric current is linear to rise, at D
nReach maximum during T, the electric current that passes through on the switching tube is:
D wherein
n: duty cycle of switching; T: switch periods; V
B: battery terminal voltage.During equalizing charge since each cell terminal voltage and nominal voltage be more or less the same, for sake of convenience, with each cell voltage unification V
BExpression.
2, work as S
nDuring shutoff, inductance L
nPower on stream by diode D
nLinear decline, fall off rate is proportional with the voltage that is added in the inductance two ends.The first half of circuit, the both end voltage that is added on the inductance is a downstream battery terminal voltage sum, and the latter half is a upstream battery terminal voltage sum.The average current of one-period internal inductance release:
3, at the equalizing circuit duration of work, the electric current that flows into storage battery is except the charging current of charge power supply, respectively work the in addition loopback electric current of balance module, for energy is fully shifted, equalizing circuit works in discontinuous current pattern (DCM), and energy stored is all transferred in the battery pack in the inductance.Equalizing circuit duty ratio maximum under the DCM pattern becomes big along with the increase of series connection storage battery number, being inductance energy release time reduces with the increase of cell number, this increase that shows the battery sum not only can not reduce its balancing speed, but also can accelerate its balancing speed.
4, in side circuit, owing to have inductance internal resistance and switch resistance, when the switching tube conducting, increased the energy loss of circuit, reduce the equalizing circuit operating efficiency.But when switching tube turn-offs, be subjected to the diode current flow pressure drop affects, shortened inductive current release time, help equalizing circuit and be operated in the DCM pattern.
Claims (3)
1. a power accumulator group energy non-dissipative type equalization charging circuit comprises the battery pack that is in series by more piece monomer power accumulator, it is characterized in that: described battery pack is unified charging under single constant current/constant voltage charge power supply.Each joint cell side of described battery pack all is connected to the equalizing circuit module, and the equalizing circuit module is distributed in the both sides of battery pack symmetrically.Described equalizing circuit module is made of energy storage inductor, switching device and diode.
2. power accumulator group energy non-dissipative type equalization charging circuit according to claim 1, it is characterized in that: described balance module is at switching device S
nWhen opening, battery B
nTo inductance L
nThe charging energy storage, inductive current is linear to rise; S
nDuring shutoff, inductance L
nIn energy by diode continuousing flow in other storage battery.The energy storage inductor of upstream battery by diode continuousing flow to the downstream battery, the energy storage inductor of downstream battery then by diode continuousing flow in the battery of upstream.Switching device conducting simultaneously by by-pass cock device duty ratio size, can effectively be regulated the energy transfer velocity in each equalizing circuit.
3. power accumulator group energy non-dissipative type equalization charging circuit according to claim 1, it is characterized in that: the switching device in the described balance module can be made of MOSFET or IGBT etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010200838 CN101867210A (en) | 2010-06-11 | 2010-06-11 | Series power storage battery energy non-dissipative type equalization charging circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010200838 CN101867210A (en) | 2010-06-11 | 2010-06-11 | Series power storage battery energy non-dissipative type equalization charging circuit |
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| CN101867210A true CN101867210A (en) | 2010-10-20 |
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| CN 201010200838 Pending CN101867210A (en) | 2010-06-11 | 2010-06-11 | Series power storage battery energy non-dissipative type equalization charging circuit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157972A (en) * | 2011-05-18 | 2011-08-17 | 上海恒动汽车电池有限公司 | Lithium-ion battery pack equilibrium system and equilibrium method thereof |
| CN102832667A (en) * | 2012-08-29 | 2012-12-19 | 华南理工大学 | Charge-discharge equalizer circuit based on inductive energy storage for series battery pack |
| CN103219768A (en) * | 2013-04-17 | 2013-07-24 | 杭州闻德电气有限公司 | Battery pack dynamic balancer |
| WO2013117027A1 (en) * | 2012-02-08 | 2013-08-15 | 东莞赛微微电子有限公司 | Battery equalization circuit |
| AT513229A1 (en) * | 2012-07-17 | 2014-02-15 | Fachhochschule Technikum Wien | Device for balancing series-connected batteries and capacitors |
| CN104617627A (en) * | 2015-02-12 | 2015-05-13 | 山东申普交通科技有限公司 | Battery charging and discharging management system |
| CN106655382A (en) * | 2016-12-26 | 2017-05-10 | 浙江吉利控股集团有限公司 | Battery charging and discharging management system |
| CN111564882A (en) * | 2020-05-27 | 2020-08-21 | 国网江西省电力有限公司电力科学研究院 | System and method for balancing power battery by gradient utilization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489236A (en) * | 2003-09-05 | 2004-04-14 | 北京交通大学 | Automatic balancing device for series storage battery |
| CN101552479A (en) * | 2009-05-25 | 2009-10-07 | 青岛大学 | Direct-current voltage reducing circuit |
-
2010
- 2010-06-11 CN CN 201010200838 patent/CN101867210A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489236A (en) * | 2003-09-05 | 2004-04-14 | 北京交通大学 | Automatic balancing device for series storage battery |
| CN101552479A (en) * | 2009-05-25 | 2009-10-07 | 青岛大学 | Direct-current voltage reducing circuit |
Non-Patent Citations (1)
| Title |
|---|
| 《工业控制计算机》 20090731 黎继刚等 《基于DSP 的动力锂离子动力电池奇偶均衡充电电路》 第90-92页 第22卷, 第7期 2 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157972B (en) * | 2011-05-18 | 2013-12-25 | 上海恒动汽车电池有限公司 | Lithium-ion battery pack equilibrium system and equilibrium method thereof |
| CN102157972A (en) * | 2011-05-18 | 2011-08-17 | 上海恒动汽车电池有限公司 | Lithium-ion battery pack equilibrium system and equilibrium method thereof |
| US9705342B2 (en) | 2012-02-08 | 2017-07-11 | Dongguan Cellwise Microelectronics Co., Ltd. | Battery equalizing circuit |
| WO2013117027A1 (en) * | 2012-02-08 | 2013-08-15 | 东莞赛微微电子有限公司 | Battery equalization circuit |
| AT513229A1 (en) * | 2012-07-17 | 2014-02-15 | Fachhochschule Technikum Wien | Device for balancing series-connected batteries and capacitors |
| AT513229B1 (en) * | 2012-07-17 | 2018-02-15 | Fachhochschule Technikum Wien | Device for balancing series-connected batteries and capacitors |
| CN102832667A (en) * | 2012-08-29 | 2012-12-19 | 华南理工大学 | Charge-discharge equalizer circuit based on inductive energy storage for series battery pack |
| CN103219768A (en) * | 2013-04-17 | 2013-07-24 | 杭州闻德电气有限公司 | Battery pack dynamic balancer |
| CN103219768B (en) * | 2013-04-17 | 2016-05-04 | 杭州闻德电气有限公司 | battery pack dynamic equalizer |
| CN104617627A (en) * | 2015-02-12 | 2015-05-13 | 山东申普交通科技有限公司 | Battery charging and discharging management system |
| CN106655382A (en) * | 2016-12-26 | 2017-05-10 | 浙江吉利控股集团有限公司 | Battery charging and discharging management system |
| CN111564882A (en) * | 2020-05-27 | 2020-08-21 | 国网江西省电力有限公司电力科学研究院 | System and method for balancing power battery by gradient utilization |
| CN111564882B (en) * | 2020-05-27 | 2023-06-16 | 国网江西省电力有限公司电力科学研究院 | Gradient utilization power battery equalization method |
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Application publication date: 20101020 |