CN202309119U - Single inductance type storage battery equalizing circuit - Google Patents
Single inductance type storage battery equalizing circuit Download PDFInfo
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- CN202309119U CN202309119U CN2011203777358U CN201120377735U CN202309119U CN 202309119 U CN202309119 U CN 202309119U CN 2011203777358 U CN2011203777358 U CN 2011203777358U CN 201120377735 U CN201120377735 U CN 201120377735U CN 202309119 U CN202309119 U CN 202309119U
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Abstract
The utility model discloses a storage battery equalizing circuit, which comprises a plurality of series-connected monomer batteries and an external control circuit, wherein each monomer battery is provided with a charging circuit and a discharging circuit. The charging circuit comprises a positive pole input switching circuit, a negative pole output switching circuit and a sharing energy storing element. The discharging circuit comprises a positive pole output switching circuit, a negative pole input switching circuit and a sharing energy storing element. The external control circuit is used for controlling strobe of the positive pole input switching circuit, the negative pole output switching circuit, the positive pole output switching circuit and the negative pole input switching circuit so as to achieve positive pole strobe and negative pole strobe of one monomer battery or several monomer batteries. The storage battery equalizing circuit achieves real efficient and safe dynamic equilibrium charging and discharging of a storage battery and can protect the batteries to the most extent and give full play to energy of the storage battery.
Description
Technical field
The utility model belongs to the battery protection system field of storage battery, relates to a kind of single inductance type batteries equalizing circuit.
Background technology
Storage battery is as energy storage medium; The all trades and professions that have been widely used in society; Particularly in recent years in industries such as communication power supply, ups power, various power car, solar power generation, wind power generation, national intelligent grid; In the system as power or power supply energy storage, ferric phosphate lithium cell has been regarded as one of assembly of most critical.Battery system is to charging, discharge with the battery pack of series system work; After each charging, discharge; The characteristic of each cell all can be different in the battery pack; Like terminal voltage, internal resistance, degree of aging, residual capacity (SOC), battery health degree (SOH) or the like, and can As time goes on further aggravate the otherness between the cell.How guaranteeing that battery carries out the balanced control of battery pack dynamic active rapidly and efficiently in charging, discharge process, is to guarantee fail safe, the reliability of ferric phosphate lithium cell and a key technology giving full play to its chemical usefulness.
Along with the use of ferric phosphate lithium cell more and more widely, the apparatus and method of in recent years series connection ferric phosphate lithium cell group being charged, discharge have obtained continuous improvement, with attempt to the protection of the battery pack that is cascaded and equilibrium can be quick more, efficiently.In the traditional passive equalization methods of ferric phosphate lithium cell; It all is the discharge matrixing network of utilizing semiconductor switch device and power resistor to constitute; These matrixes are applied to each cell two ends, and the higher cell of terminal voltage discharges in right amount during to charging, and the voltage of each cell in the battery pack is raise so that identical speed is consistent as far as possible; While is sufficient, reaches the purpose of the passive equilibrium of series-connected cell; Just can reach balanced purpose because the power resistor that adopts will discharge to cell, the caloric value of resistance is big, and is therefore lower to the capacity usage ratio of battery pack front end charger, and bigger resistance generating thermal losses is arranged.
In traditional battery power discharge method; When wherein some battery reach the smallest end voltage that needs protection; Then whole battery group will be forced and stop discharge; But during this time, possibly also have a lot of energy remaining not to be released out in other some battery in good condition, so this will greatly influence the energy utilization rate of battery pack.
In traditional ferric phosphate lithium cell group charging method of seeing at present, be that the total voltage of the battery pack that is cascaded is gathered, do not monitor the terminal voltage of each cell; Though this way is simple; But because in use the electric weight of each cell is also inhomogeneous; If recycle down for a long time, it is bigger that the otherness of electric weight will become, so the less cell of electric weight will produce overdischarge; Make its life-span that recycles reduce greatly, therefore will influence the use of battery pack.Above-described charging method is set a battery power discharge final voltage often, when the total voltage that collects battery pack is lower than this set point, will stop the discharge of battery pack.Because final voltage can not reflect the true terminal voltage of all cells in the battery pack; Therefore when stopping discharge; The phenomenon of overdischarge may appear in some cell; Some cell possibly also have a lot of remaining electric weight not use, and the utilization rate of the energy content of battery will reduce greatly.
In traditional ferric phosphate lithium cell group charging method of seeing at present, all be that terminal voltage with reference to battery is as basis for estimation, when the terminal voltage of battery reaches certain numerical value; Just force to stop discharge, but under different actual environments for use, like ambient temperature when higher; Possibly also have a lot of remaining electric weight not discharge in the battery; And when ambient temperature was low, the phenomenon of battery over-discharge will appear, therefore can cause damage to battery.
Traditional ferric phosphate lithium cell is dynamically initiatively in the equalization methods, all is to utilize the voltage of all cells that are cascaded finally to reach consistent with the balanced operation termination condition.Be coarse like this.In fact the actual storage electric weight of battery also will receive the temperature of battery itself, the influence that accumulative total discharges and recharges the factors such as chemical characteristic of number of times, degree of aging, health degree, battery itself.Under different temperature, charge and discharge cycles number of times, the energy that can store and discharge when the ferric phosphate lithium cell group is full of electricity is inequality, and the terminal voltage of battery also is inequality when being full of electricity.As under low temperature environment, the energy that can store in the battery pack is less, and the terminal voltage when being full of electricity is higher, or the like.Just to need charging, electric discharge device under different environment, can maximum storable electric weight in the battery be full of, and can the electric weight that store in the battery pack all be discharged the supply external loading to greatest extent to utilizing the electric weight of storing in the battery pack.What deserves to be mentioned is, because each cell manufacturing process error or the like in the ferric phosphate lithium cell group, when serial connection charge; There is certain difference in its electric weight; And this species diversity can be in use slowly increase gradually, this will influence the operate as normal of whole battery group, therefore; This just needs charging, electric discharge device can eliminate this species diversity, makes battery pack in charging, discharge process, remain equilibrium state.
The utility model content
The purpose of the utility model provide a kind of compared with prior art more science, more reliably, more can utilize the equalizing circuit of ferric phosphate lithium cell group energy fully, to overcome deficiency of the prior art.
It is a kind of novel based on the dynamic electric weight of each cell and the series battery equalizing charge of voltage differences compensation, the circuit of discharge that the utility model provides, and specifically adopts following technical scheme:
A kind of batteries equalizing circuit comprises:
Batteries comprises the cell of a plurality of series connection; Each cell all possesses a charging circuit and a discharge circuit;
Said charging circuit comprises: an anodal input-switching circuit, a negative pole output switching circuit and shared energy-storage travelling wave tube, the positive pole of cell are connected in the negative pole of this cell successively through the negative pole output switching circuit of the anodal input-switching circuit of this cell, shared energy-storage travelling wave tube and this cell; The anodal input-switching circuit conduct simultaneously of said this cell and the negative pole input-switching circuit of the anodal adjacent monomer battery that links to each other of this cell; The anodal output switching circuit of the adjacent monomer battery that the conduct simultaneously of the negative pole output switching circuit of said this cell links to each other with this cell negative pole;
Said discharge circuit comprises: an anodal output switching circuit, a negative pole input-switching circuit and said shared energy-storage travelling wave tube, the positive pole of cell are connected in the negative pole of this cell successively through the negative pole input-switching circuit of the anodal output switching circuit of this cell, shared energy-storage travelling wave tube and this cell; The anodal output switching circuit conduct simultaneously of said this cell and the negative pole output switching circuit of the anodal adjacent monomer battery that links to each other of this cell; The anodal input-switching circuit of the adjacent monomer battery that the conduct simultaneously of the negative pole input-switching circuit of said this cell links to each other with this cell negative pole; And
External control circuit is used to control the gating of said anodal input-switching circuit, negative pole output switching circuit, anodal output switching circuit and negative pole input-switching circuit, thereby makes the both positive and negative polarity gating of some or certain several cell; Constituted series loop between the both positive and negative polarity of the cell of gating and the said shared energy-storage travelling wave tube.
Shared energy-storage travelling wave tube described in shared energy-storage travelling wave tube described in the above-mentioned charging circuit and the discharge circuit is an identity element.
As to the improving and replenishing of technique scheme, the utility model is further taked the following technical measures or the combination in any of these technical measures:
Said anodal input-switching circuit, negative pole output switching circuit, anodal output switching circuit and negative pole input-switching circuit are composed in series by diode and equalizer switch.
Equalizer switch on said anodal input-switching circuit and the negative pole input-switching circuit all adopts N-MOSFET, and the equalizer switch on said anodal output switching circuit and the negative pole output switching circuit all adopts P-MOSFET.
Said diode is a Schottky diode.
Said shared energy-storage travelling wave tube is a power inductance.
Said cell is a ferric phosphate lithium cell.
The utility model is further selected following optimized technical scheme for use:
In the said anodal input-switching circuit: the S utmost point of N-MOSFET connects the positive pole of cell, and the D utmost point of N-MOSFET connects the negative electrode of said Schottky diode, and the G of N-MOSFET very control end is connected with said external control circuit; The anode of said Schottky diode is connected with said shared energy-storage travelling wave tube;
In the said negative pole input-switching circuit: the S utmost point of N-MOSFET connects the negative pole of cell, and the D utmost point of N-MOSFET connects the negative electrode of said Schottky diode, and the G of N-MOSFET very control end is connected with said external control circuit; The anode of said Schottky diode is connected with said shared energy-storage travelling wave tube;
In the said anodal output switching circuit: the S utmost point of P-MOSFET connects the positive pole of cell, and the D utmost point of P-MOSFET connects the anode of Schottky diode, and the G of P-MOSFET very control end is connected with said external control circuit; The negative electrode of said Schottky diode is connected with said shared energy-storage travelling wave tube;
In the said negative pole output switching circuit: the S utmost point of P-MOSFET connects the negative pole of cell, and the D utmost point of P-MOSFET connects the anode of Schottky diode, and the G of P-MOSFET very control end is connected with said external control circuit; The negative electrode of said Schottky diode is connected with said shared energy-storage travelling wave tube.
The Schottky diode that the utility model is connected in series on P-MOSFET and N-MOSFET is in order to prevent that high back voltage from puncturing corresponding MOSFET; Because power MOSFET all contains reverse parasitic body diode; If at MOSFET outside series connection Schottky diode, be not applied under the situation of reverse voltage at MOSFET so, parasitic body diode will be guided electric current into cell; Can destroy the circuit working characteristic, even cause battery failures.
The said above-mentioned equalizing circuit that provides of the utility model; Be as basis for estimation, in the battery charging process, with the dynamic electric weight of each cell and voltage when finding between the cell that electric weight is with voltage differences greatly the time; Just electric weight and the higher cell of voltage are discharged in right amount; And transfer to an electric weight of releasing in other the cell, for other behindhand battery charges, be implemented in the dynamic equalization in the charging process; Equally in the process that batteries connection load is discharged; The cell that electric weight and voltage are high shifts the electric weight that has more to electric weight and the less cell of voltage through discharge circuit and charging circuit; Be implemented in the dynamic equalization in the discharge process; Finally reach real efficient, safe dynamic equalization charging and the discharge of battery pack, can protect battery to greatest extent, give full play to the energy of battery pack.
Description of drawings
Fig. 1 is the equalizing circuit syndeton sketch map of 16 cell series connection.
Fig. 2 is the charging circuit and the discharge circuit sketch map of a cell in the utility model.
Fig. 3 is that cell CELL16 shifts the equalizing circuit work schedule sketch map to CELL1～15 to energy.
Embodiment
Further set forth the utility model below in conjunction with specific embodiment, should be understood that these embodiment only be used to the utility model is described and be not used in the restriction the utility model protection range.
Fig. 1 is the equalizing circuit syndeton sketch map (batteries that is composed in series with 16 cells is an example) of the utility model; It comprises: by the batteries that 16 cells are composed in series, wherein each cell all possesses a charging circuit and a discharge circuit.See also Fig. 2; With first cell 1 wherein is example: the charging circuit that cell 1 is charged comprises: anodal input-switching circuit 1a, negative pole output switching circuit 1d and inductance 17, the positive pole of cell 1 are connected in the negative pole of cell 1 successively through anodal input-switching circuit 1a, inductance 17 and negative pole output switching circuit 1d; The discharge circuit that cell 1 is discharged comprises: anodal output switching circuit 1b, negative pole input-switching circuit 1c and inductance 17, the positive pole of cell 1 are connected in the negative pole of cell 1 successively through single anodal output switching circuit 1b, inductance 17 and negative pole input-switching circuit 1c.Wherein: anodal input-switching circuit 1a, negative pole output switching circuit 1d, anodal output switching circuit 1b and negative pole input-switching circuit 1c control their gating by external control circuit (not drawing among the figure), and whether the signal that sends through external control circuit is selected this cell to be charged or discharge.Anodal input-switching circuit 1a, negative pole output switching circuit 1d, anodal output switching circuit 1b and negative pole input-switching circuit 1c are composed in series by diode and equalizer switch.Fig. 2 has provided a preferred implementation of the utility model, wherein:
Anodal input-switching circuit 1a is connected with Schottky diode 102 by N-MOSFET 101 and constitutes: 101 the S utmost point (source electrode) of N-MOSFET is connected the positive pole of cell 1; Its D utmost point (drain electrode) connects the negative electrode of Schottky diode 102; Its G utmost point (grid) is that control end is connected with said external control circuit, feeds control signal by external control circuit and makes its ON/OFF; The anode of Schottky diode 102 is connected with inductance 17;
104 series connection constitute anodal output switching circuit 1b with Schottky diode by P-MOSFET 103: the S utmost point (source electrode) of P-MOSFET103 is connected the positive pole of cell 1; Its D utmost point (drain electrode) connects the anode of Schottky diode 104; Its G utmost point (grid) is that control end is connected with said external control circuit, feeds control signal by external control circuit and makes its ON/OFF; The negative electrode of Schottky diode 104 is connected with inductance 17;
106 series connection constitute negative pole input-switching circuit 1c with Schottky diode by N-MOSFET 105: the S utmost point (source electrode) of N-MOSFET105 is connected the negative pole of cell 1; Its D utmost point (drain electrode) connects the negative electrode of Schottky diode 106; Its G utmost point (grid) is that control end is connected with said external control circuit, feeds control signal by external control circuit and makes its ON/OFF; The anode of Schottky diode 106 is connected with inductance 17;
108 series connection constitute negative pole output switching circuit 1d with Schottky diode by P-MOSFET 107: the S utmost point (source electrode) of P-MOSFET107 is connected the negative pole of cell 1; Its D utmost point (drain electrode) connects the anode of Schottky diode 108; Its G utmost point (grid) is that control end is connected with said external control circuit, feeds control signal by external control circuit and makes its ON/OFF; The negative electrode of Schottky diode 108 is connected with inductance 17.
The charging circuit of other cells and discharge circuit structure are all same as described above, repeat no more.
Fig. 1 is the equalizing circuit syndeton sketch map of 16 cells series connection, shared 16 P-MOSFET, 16 N-MOSFET, 32 Schottky diodes.The charging circuit of each cell and discharge circuit all adopt same energy-storage travelling wave tube inductance 17.Under the situation of a plurality of battery series connection, input, output switching circuit between adjacent cell are shared, for example: the anodal input-switching circuit 15a conduct simultaneously of cell 15 and the negative pole input-switching circuit of its anodal cell 16 that links to each other; The anodal output switching circuit of the cell 14 that the negative pole output switching circuit 15d of cell 15 conduct simultaneously links to each other with its negative pole; The anodal output switching circuit 15b conduct simultaneously of cell 15 and the negative pole output switching circuit of its anodal cell 16 that links to each other; Link to each other with its negative pole anodal input-switching circuit of cell 14 of the negative pole input-switching circuit 15c of cell 15 conduct simultaneously.The conducting of the anodal input-switching circuit of all cells, negative pole output switching circuit, anodal output switching circuit and negative pole input-switching circuit is controlled by said external control circuit; Can be with the both positive and negative polarity independence gating of some cells, also can be as required with the both positive and negative polarity gating of certain several cell; Constituted series loop between the both positive and negative polarity of the cell of gating and the said shared energy-storage travelling wave tube.For example: when anodal input-switching circuit 15a and negative pole output switching circuit 15d conducting, cell 15 is by gating, and constitute series loop between cell 15 and the inductance 17 this moment, and 17 pairs of cells 15 of inductance charge; When anodal input-switching circuit 15a and negative pole output switching circuit 1d conducting, cell 1～15 is by gating, and constitute series loop between cell 1～15 and the inductance 17 this moment, and 17 pairs of cells 1～15 of inductance charge.
Fig. 3 is the operation principle sketch map of the utility model.In use; Use the charging current of batteries or batteries discharging current and time are to external world calculated the dynamic electric weight size in wherein cell charging, the discharge process; When the dynamic electric weight between the cell and terminal voltage difference during, just carry out the dynamic equalization of electric weight and voltage, through the both positive and negative polarity gating of the external control circuit cell that electric weight is higher greater than set point; Inductance 17 is charged; Electric current rises in the inductance, the beginning storage power, and corresponding cell is discharged; Under inductance 17 undersaturated situation, the Joule energy P that inductance stores is: P=I*I*L/2 (I is the maximum current that inductance rises to, and unit is an ampere, and L is the inductance value of inductance, and unit is Henry).After inductance is recharged; Need to switch input, output switching circuit at once, carry out the gating of the both positive and negative polarity of cell combination again, constituted new series loop by the both positive and negative polarity of the cell of gating combination and inductance; Inductance begins discharge; Electric current in the inductance descends, and begins to discharge the energy of last stored, and corresponding cell combination is recharged; Finally, the Joule energy that inductance discharges is greater than 90%*P, and P is inductance energy stored last time.And in use, control dynamic charge value of cell and magnitude of voltage all the time and when charging, be not more than the maximum rated value that allows, when discharge, be not less than the minimum rated value that allows.With the cell shown in Fig. 3 16 is the equalizing circuit work schedule that energy shifts example to cell 1～15: when the dynamic electric weight on detecting cell 16 is higher; Connect switch 21 and switch 22 through external control circuit; This moment, inductance 17 was recharged, and corresponding cell 16 is discharged; Then switch 21 is broken off, and connect switch 23, make cell 1～15, switch 22 and switch 23 constitute series loop.Give cell 1～15 because the afterflow effect of inductance 17, inductance will discharge in preceding first time energy stored, the rest may be inferred, under the Different control sequential, can accomplish the equilibrium of 16 cell series connection.
According to said process, just accomplished the process that some cells can discharge separately or charge, no matter batteries is recharged; Or batteries outwards the discharge in; Can realize the independent charging and discharging of some cells, the cell that can guarantee to be cascaded can voltage under any state near or capacity approaching, protection can not produce the serious overvoltage of indivedual cells in charging process; Also guarantee in discharge process simultaneously; It is seriously under-voltage not have indivedual cells, to protect battery to greatest extent, gives full play to the energy of battery pack.
Foregoing description of the utility model and application are illustrative, are not to want the scope of the utility model is limited in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation of spirit that does not break away from the utility model or substantive characteristics the utility model can be realized with other forms.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to the embodiment that is disclosed.
Claims (6)
1. batteries equalizing circuit comprises:
Batteries comprises the cell of a plurality of series connection; Each cell all possesses a charging circuit and a discharge circuit;
Said charging circuit comprises: an anodal input-switching circuit, a negative pole output switching circuit and shared energy-storage travelling wave tube, the positive pole of cell are connected in the negative pole of this cell successively through the negative pole output switching circuit of the anodal input-switching circuit of this cell, shared energy-storage travelling wave tube and this cell; The anodal input-switching circuit conduct simultaneously of said this cell and the negative pole input-switching circuit of the anodal adjacent monomer battery that links to each other of this cell; The anodal output switching circuit of the adjacent monomer battery that the conduct simultaneously of the negative pole output switching circuit of said this cell links to each other with this cell negative pole; Said discharge circuit comprises: an anodal output switching circuit, a negative pole input-switching circuit and said shared energy-storage travelling wave tube, the positive pole of cell are connected in the negative pole of this cell successively through the negative pole input-switching circuit of the anodal output switching circuit of this cell, shared energy-storage travelling wave tube and this cell; The anodal output switching circuit conduct simultaneously of said this cell and the negative pole output switching circuit of the anodal adjacent monomer battery that links to each other of this cell; The anodal input-switching circuit of the adjacent monomer battery that the conduct simultaneously of the negative pole input-switching circuit of said this cell links to each other with this cell negative pole; And
Be used to control the external control circuit of said anodal input-switching circuit, negative pole output switching circuit, anodal output switching circuit and negative pole input-switching circuit gating.
2. batteries equalizing circuit as claimed in claim 1 is characterized in that, said anodal input-switching circuit, negative pole output switching circuit, anodal output switching circuit and negative pole input-switching circuit are composed in series by diode and equalizer switch.
3. batteries equalizing circuit as claimed in claim 2; It is characterized in that; Equalizer switch on said anodal input-switching circuit and the negative pole input-switching circuit all adopts N-MOSFET, and the equalizer switch on said anodal output switching circuit and the negative pole output switching circuit all adopts P-MOSFET.
4. batteries equalizing circuit as claimed in claim 3 is characterized in that, said diode is a Schottky diode.
5. batteries equalizing circuit as claimed in claim 4 is characterized in that,
In the said anodal input-switching circuit: the S utmost point of N-MOSFET connects the positive pole of cell, and the D utmost point of N-MOSFET connects the negative electrode of said Schottky diode, and the G of N-MOSFET very control end is connected with said external control circuit; The anode of said Schottky diode is connected with said shared energy-storage travelling wave tube;
In the said negative pole input-switching circuit: the S utmost point of N-MOSFET connects the negative pole of cell, and the D utmost point of N-MOSFET connects the negative electrode of said Schottky diode, and the G of N-MOSFET very control end is connected with said external control circuit; The anode of said Schottky diode is connected with said shared energy-storage travelling wave tube;
In the said anodal output switching circuit: the S utmost point of P-MOSFET connects the positive pole of cell, and the D utmost point of P-MOSFET connects the anode of Schottky diode, and the G of P-MOSFET very control end is connected with said external control circuit; The negative electrode of said Schottky diode is connected with said shared energy-storage travelling wave tube;
In the said negative pole output switching circuit: the S utmost point of P-MOSFET connects the negative pole of cell, and the D utmost point of P-MOSFET connects the anode of Schottky diode, and the G of P-MOSFET very control end is connected with said external control circuit; The negative electrode of said Schottky diode is connected with said shared energy-storage travelling wave tube.
6. like the arbitrary described batteries equalizing circuit of claim 1-5, it is characterized in that said shared energy-storage travelling wave tube is a power inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203777358U CN202309119U (en) | 2011-10-08 | 2011-10-08 | Single inductance type storage battery equalizing circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203777358U CN202309119U (en) | 2011-10-08 | 2011-10-08 | Single inductance type storage battery equalizing circuit |
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| CN202309119U true CN202309119U (en) | 2012-07-04 |
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| CN2011203777358U Expired - Fee Related CN202309119U (en) | 2011-10-08 | 2011-10-08 | Single inductance type storage battery equalizing circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036257A (en) * | 2011-10-08 | 2013-04-10 | 上海锂曜能源科技有限公司 | Equalizing circuit and method for single inductance type storage battery group |
| CN111555407A (en) * | 2020-05-29 | 2020-08-18 | 河南理工大学 | Series-parallel battery pack integrated active equalization method based on inductive energy storage |
| CN111555408A (en) * | 2020-05-29 | 2020-08-18 | 河南理工大学 | Single-inductor-based active equalization method for series-parallel battery pack |
| CN114156993A (en) * | 2021-12-14 | 2022-03-08 | 傲普(上海)新能源有限公司 | Storage battery equalization circuit and control method |
-
2011
- 2011-10-08 CN CN2011203777358U patent/CN202309119U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036257A (en) * | 2011-10-08 | 2013-04-10 | 上海锂曜能源科技有限公司 | Equalizing circuit and method for single inductance type storage battery group |
| CN111555407A (en) * | 2020-05-29 | 2020-08-18 | 河南理工大学 | Series-parallel battery pack integrated active equalization method based on inductive energy storage |
| CN111555408A (en) * | 2020-05-29 | 2020-08-18 | 河南理工大学 | Single-inductor-based active equalization method for series-parallel battery pack |
| CN111555407B (en) * | 2020-05-29 | 2021-08-10 | 河南理工大学 | Series-parallel battery pack integrated active equalization method based on inductive energy storage |
| CN111555408B (en) * | 2020-05-29 | 2021-08-10 | 河南理工大学 | Single-inductor-based active equalization method for series-parallel battery pack |
| CN114156993A (en) * | 2021-12-14 | 2022-03-08 | 傲普(上海)新能源有限公司 | Storage battery equalization circuit and control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20151008 |
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| EXPY | Termination of patent right or utility model |