CN204424959U - 2V lead acid accumulator equalizer - Google Patents
2V lead acid accumulator equalizer Download PDFInfo
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- CN204424959U CN204424959U CN201520061849.XU CN201520061849U CN204424959U CN 204424959 U CN204424959 U CN 204424959U CN 201520061849 U CN201520061849 U CN 201520061849U CN 204424959 U CN204424959 U CN 204424959U
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- battery
- lead acid
- voltage
- acid accumulator
- electric energy
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Abstract
A kind of 2V lead acid accumulator equalizer, comprises signal generator, signal amplifier, electronic switch, signal controller, on-off controller, drive circuit, voltage comparator and electric energy transfer circuit.Discharge and recharge can be comprised to any state of battery pack, discharge and recharge convalescence and resting stage carry out fast uniform, the part electric energy transfer of battery high for voltage is transported in the low adjacent cell of voltage, improve voltage and the capacity of low-voltage battery, until two cell voltages are identical or close, in balancing procedure, electric energy loss is few, efficiency is high, device heating amount is little, improve efficiency, each 2V lead acid accumulator equalizer only has 3 connecting lines, equilibrium can be carried out to 2 pieces of series-connected cells, when serial battery quantity is more than 2 pieces, only cascade need be carried out, the accuracy of equalization is high, the attended operation that battery pack needs regular equalizing charge can be removed from, to sulfuration battery, there is repair, also be applicable to high-capacity nickel-hydrogen battery group and bank of super capacitors.
Description
Technical field
The utility model relates to battery management field, more particularly, relates to the 2V lead acid accumulator equalizer carrying out voltage and capacity equilibrium management for 2V lead-acid batteries.
Background technology
2V lead acid accumulator is large with its capacity, comparison of coherence good, internal resistance is low, charge and discharge point electric current large and be usually used in very important power-supply system, as base station, power station, communication power supply, special power supply etc.But because monomer battery voltage is lower, normally connect and use in groups, the most commonly 24 pieces of battery strings are unified into 48V voltage is system power supply.Due to factors such as design, the accuracy of manufacture, technology controlling and process and detection techniques, the parameters such as internal resistance between different battery, capacity, self-discharge rate unavoidably have certain difference.Stack battery is after repeatedly charge and discharge cycle, comprising the impact of temperature on battery makes the voltage differences between cell can be increasing, in charge and discharge process, easily cause the voltage of battery in series battery unbalanced, the available capacity of series battery is reduced, affect the serviceability of battery pack, reduce the service efficiency of battery pack, this species diversity causes the total capacity of battery pack to depend on the capacity of most weak battery.After current 2V lead acid accumulator inspection finds the problem that voltage difference is excessive, usually take the method for equalizing charge to reduce voltage difference, although this method has certain effect to reducing voltage difference, very outstanding to its drawback, frequent use can strengthen battery dehydrating speed, cause Individual cells overcharge, battery pack useful life can be shortened, in addition, because 2V lead acid accumulator voltage compare is low, electric voltage equalization is carried out to it and also there is a lot of difficulty, or circuit is complicated, or be difficult to realize.
Utility model content
The technical problems to be solved in the utility model is, for the defect of prior art, provides a kind of 2V lead acid accumulator equalizer solving above defect, improves the consistency of 2V lead acid storage battery cell voltage, improves service efficiency and the life-span of battery pack.
The utility model solves the technical scheme that its technical problem adopts: provide a kind of 2V lead acid accumulator equalizer, comprise signal generator, signal amplifier, electronic switch, signal controller, on-off controller, drive circuit, voltage comparator and electric energy transfer circuit, wherein, signal generator comprises the square-wave oscillator controlled by signal controller, signal controller is connected with signal generator and on-off controller, signal amplifier is connected with signal generator and electronic switch, voltage comparator is connected with on-off controller and electric energy transfer circuit, drive circuit is connected with electronic switch and electric energy transfer circuit, signal generator exports square wave, the square wave duty ratio of signal controller control signal generator, the shaping that signal amplifier carries out signal is amplified, voltage comparator compares the voltage swing of adjacent cell and direction, by the connection of on-off controller control signal amplifier and drive circuit, electric energy transfer circuit carries out regular opening under the control of drive circuit, close action, by battery power high for voltage by conversion, transfer is transported in the relatively low adjacent cell of voltage, improve voltage and the capacity of low-voltage battery, the voltage of dynamic equalization battery and capacity, in balancing procedure, electric energy loss is few, efficiency is high, device heating amount is little, each 2V lead acid accumulator equalizer only has 3 connecting lines, equilibrium can be carried out to 2 pieces of series-connected cells, when serial battery quantity is more than 2 pieces, only cascade need be carried out.
In 2V lead acid accumulator equalizer of the present utility model, described electric energy transfer circuit comprises switching tube Q1, Q2, diode D1, D2 and energy storage inductor L, the source electrode of switching tube Q1 is connected with the positive pole of battery B1 with the negative electrode of diode D1, the drain electrode of the drain electrode of switching tube Q1 and the anode of diode D1 and switching tube Q2 and the negative electrode of diode D2 and one end of inductance L are connected, the other end of inductance L is connected with the positive pole of the negative pole of battery B1 and battery B2, the source electrode of switching tube Q2 is connected with the negative pole of battery B2 with the anode of diode D2, switching tube Q1 adopts P-channel field-effect transistor (PEFT) pipe, switching tube Q2 adopts N channel field-effect pipe, diode D1, D2 is Schottky diode, by the open and close of switching tube, the part electric energy of battery high for voltage is cached in inductance L, with unlatching, the electric energy be buffered in inductance L is charged in the lower battery of voltage by the closedown of diode again, improve voltage and the capacity of low-voltage battery, quit work until the voltage of 2 pieces of batteries reaches setting voltage difference.
In 2V lead acid accumulator equalizer of the present utility model, drive circuit comprises the first drive circuit and the second drive circuit, its input is connected with electronic switch output respectively, and its first drive circuit output and the second drive circuit output are connected with the grid of electric energy transfer contactor pipe Q1, Q2 respectively.
In 2V lead acid accumulator equalizer of the present utility model, each 2V lead acid accumulator equalizer is an independence, complete device, can realize carrying out equilibrium to 2 pieces of 2V lead acid accumulators, when 2V lead acid accumulator serial number is more than 2 pieces, only cascade need be carried out to 2V lead acid accumulator equalizer.
Implement 2V lead acid accumulator equalizer of the present utility model, do not adopt the battery management specialty particular device such as chip and MCU, CPU, have that structure is simple, moderate cost, the features such as cost performance is high, equalization efficiency is high, infinite expanding.Take unique variable pulse technology, automatically control euqalizing current size, to adapt to cell operating status according to adjacent cell voltage extent.
The utility model core technology adopts difference current control technology, according to the charging and discharging currents in voltage extent automatic control electric pond.Between charge period, automatically high to voltage battery reduces charging current, and the battery low to voltage increases charging current, realizes the overall balanced rising of each cell voltage, reduce Individual cells generation overcharge probability of damage by the automatic lifting of charging current.Such as between charge period, the voltage of battery B1 is higher than the voltage of battery B2, and the charging current of the battery pack in certain moment is Ic, then under the effect of this equalizer, the charging current of battery B1 is Ic-Ib1, lower than charging current Ic, and the charging current of battery B2 is Ic+Ib2, higher than charging current Ic, wherein, Ib1 is the shunt current of battery B1, and Ib2 is the supplemental current of battery B2, Ib2=Ib1*E, E is current transfer efficiency, realizes the object of the every block battery charge of adjustment automatically; Interdischarge interval, automatically high to voltage battery increases discharging current, and the battery low to voltage reduces discharging current, initiatively makes the overall balanced decline of each cell voltage, realizes the balanced discharge of battery pack, reduce Individual cells generation overdischarge probability of damage.Such as, the voltage of interdischarge interval battery B1 is higher than the voltage of battery B2, and the discharging current of the battery pack in certain moment is Io, then under the effect of this equalizer, the discharging current of battery B1 is Io+Ib1, higher than discharging current Io, and the discharging current of battery B2 is Io-Ib2, lower than discharging current Io, wherein, Ib1 is the electric current of many releases of battery B1, Ib2 is the supplemental current of battery B2, Ib2=Ib1*E, E are current transfer efficiency, realize the object of the every block battery discharge current of adjustment automatically.This characteristic makes its discharge and recharge convalescence being also applicable to battery and equilibrium resting stage, and operation principle is similar, realizes efficient balanced effect.
In addition, the utility model also has following beneficial effect:
One is that the battery of new used batteries or different capabilities can be used in combination, does not need strict pairing;
Two are transfer currents is high-frequency pulse current, has certain repair to sulfuration battery;
Three is to replace this battery management process of regular equalizing charge;
Four is favorable expandability, is also applicable to high-capacity nickel-hydrogen battery group and bank of super capacitors.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structured flowchart of the utility model 2V lead acid accumulator equalizer;
Fig. 2 is the electric energy transfer circuit diagram of the utility model 2V lead acid accumulator equalizer;
Fig. 3 is the cascade circuit figure of the utility model 2V lead acid accumulator equalizer.
Embodiment
In order to make, the purpose of this utility model is more clear to be understood, is further elaborated to the utility model below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, in the structured flowchart of 2V lead acid accumulator equalizer of the present utility model, comprise signal generator, signal amplifier, electronic switch, signal controller, on-off controller, drive circuit, voltage comparator and electric energy transfer circuit, wherein, signal generator comprises the square-wave oscillator controlled by signal controller, signal controller is connected with signal generator and on-off controller, signal amplifier is connected with signal generator and electronic switch, voltage comparator is connected with on-off controller and electric energy transfer circuit, drive circuit is connected with electronic switch and electric energy transfer circuit.Specific works process is as follows: voltage comparator compares the voltage swing of two pieces of batteries and direction, export control signal, by on-off controller control signal controller and electronic switch work respectively, electric energy transfer circuit working is made again by drive circuit, electric voltage equalization is carried out to adjacent 2 pieces of batteries, until the voltage difference of 2 pieces of batteries stops balanced in setting pressure reduction, electronic switch described here is analog switch.
As shown in Figure 2, be the electric energy transfer circuit diagram of the utility model 2V lead acid accumulator equalizer.Described electric energy transfer circuit comprises switching tube Q1, Q2, diode D1, D2 and energy storage inductor L, the source electrode of switching tube Q1 is connected with the positive pole of battery B1 with the negative electrode of diode D1, the drain electrode of the drain electrode of switching tube Q1 and the anode of diode D1 and switching tube Q2 and the negative electrode of diode D2 and one end of inductance L are connected, the other end of inductance L is connected with the positive pole of the negative pole of battery B1 and battery B2, and the source electrode of switching tube Q2 is connected with the negative pole of battery B2 with the anode of diode D2.In figure, switching tube Q1 adopts P-channel field-effect transistor (PEFT) pipe, and switching tube Q2 adopts N channel field-effect pipe.First drive circuit and the second drive circuit are particular design drive circuit, make switching tube Q1, Q2 normally can carry out switch under lower supply power voltage, its the first drive circuit input IN1 is connected with the electronic switching circuit output of Fig. 1 respectively with the second drive circuit input IN2, and the first drive circuit output OUT1 is connected with the grid of switching tube Q1, Q2 respectively with the second drive circuit output OUT2.The operation principle of electric energy transfer circuit is as follows: suppose the voltage of the voltage of battery B1 higher than battery B2, the square wave that signal generator exports is loaded into the grid of switching tube Q1 after the first drive circuit amplifies, at the negative half-cycle of square wave, Q1 conducting, the part electric energy of battery B 1 is stored temporarily in inductance L by switching tube Q1; At the positive half period of square wave, switching tube Q1 ends, because the electric energy stored in inductance L can not suddenly change, the electric energy be stored temporarily in inductance L is charged in battery B2 by diode D2, under the effect of continuous impulse, after battery B1 discharges certain electric energy, voltage reduces gradually, and after battery B1 accepts certain electric energy, voltage rises gradually, after the voltage of two pieces of batteries reaches setting pressure reduction, balanced operation stops; Diode described here is Schottky diode.If the voltage of battery B1 is lower than the voltage of battery B2, operation principle is similar.
As shown in Figure 3, be the cascade circuit figure of the utility model 2V lead acid accumulator equalizer.In figure, B1, B2, B3, Bn-1, Bn are monomer 2V lead acid accumulator, carry out head and the tail successively according to electric rule to be connected in series, E1, E2, En-1 are independently 2V lead acid accumulator equalizer, interconnection successively, wherein, 3 connecting lines of E1 are connected with the negative pole of the positive pole of battery B1, negative pole and battery B2 respectively, 3 connecting lines of E2 are connected with the negative pole of the positive pole of battery B2, negative pole and battery B3 respectively, and 3 connecting lines of En-1 are connected with the negative pole of the positive pole of battery Bn-1, negative pole and battery Bn respectively.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. a 2V lead acid accumulator equalizer, it is characterized in that: it comprises signal generator, signal amplifier, electronic switch, signal controller, on-off controller, drive circuit, voltage comparator and electric energy transfer circuit, wherein, signal generator comprises the square-wave oscillator controlled by signal controller, signal controller is connected with signal generator and on-off controller, signal amplifier is connected with signal generator and electronic switch, voltage comparator is connected with on-off controller and electric energy transfer circuit, and drive circuit is connected with electronic switch and electric energy transfer circuit;
Described drive circuit comprises the first drive circuit and the second drive circuit, and its input is connected with electronic switch output respectively, and its first drive circuit output and the second drive circuit output are connected with the grid of electric energy transfer contactor pipe Q1, Q2 respectively;
Described electric energy transfer circuit comprises switching tube Q1, Q2, diode D1, D2 and energy storage inductor L, the source electrode of switching tube Q1 is connected with the positive pole of battery B1 with the negative electrode of diode D1, the drain electrode of the drain electrode of switching tube Q1 and the anode of diode D1 and switching tube Q2 and the negative electrode of diode D2 and one end of inductance L are connected, the other end of inductance L is connected with the positive pole of the negative pole of battery B1 and battery B2, the source electrode of switching tube Q2 is connected with the negative pole of battery B2 with the anode of diode D2, switching tube Q1 adopts P-channel field-effect transistor (PEFT) pipe, switching tube Q2 adopts N channel field-effect pipe, diode D1, D2 is Schottky diode.
2. 2V lead acid accumulator equalizer according to claim 1, is characterized in that: each 2V lead acid accumulator equalizer is an independence, complete device, can realize carrying out equilibrium to 2 pieces of 2V lead acid accumulators.
3. 2V lead acid accumulator equalizer according to claim 1, is characterized in that: when 2V lead acid accumulator serial number is more than 2 pieces, only need carry out cascade to 2V lead acid accumulator equalizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061849.XU CN204424959U (en) | 2015-01-28 | 2015-01-28 | 2V lead acid accumulator equalizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061849.XU CN204424959U (en) | 2015-01-28 | 2015-01-28 | 2V lead acid accumulator equalizer |
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| CN204424959U true CN204424959U (en) | 2015-06-24 |
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| CN201520061849.XU Expired - Fee Related CN204424959U (en) | 2015-01-28 | 2015-01-28 | 2V lead acid accumulator equalizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428361A (en) * | 2017-09-02 | 2019-03-05 | 周宝林 | A kind of real-time battery equalizer of transfer type with bi-directional synchronization rectification function |
| CN115347258A (en) * | 2022-10-20 | 2022-11-15 | 北京国电光宇机电设备有限公司 | Repair system of lead-acid storage battery pack, balancing method and desulphurization method thereof |
-
2015
- 2015-01-28 CN CN201520061849.XU patent/CN204424959U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428361A (en) * | 2017-09-02 | 2019-03-05 | 周宝林 | A kind of real-time battery equalizer of transfer type with bi-directional synchronization rectification function |
| CN115347258A (en) * | 2022-10-20 | 2022-11-15 | 北京国电光宇机电设备有限公司 | Repair system of lead-acid storage battery pack, balancing method and desulphurization method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhou Quan Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20220128 |