CN1126381A - Protection circuit for cells used in a series chain - Google Patents
Protection circuit for cells used in a series chain Download PDFInfo
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- CN1126381A CN1126381A CN95102070A CN95102070A CN1126381A CN 1126381 A CN1126381 A CN 1126381A CN 95102070 A CN95102070 A CN 95102070A CN 95102070 A CN95102070 A CN 95102070A CN 1126381 A CN1126381 A CN 1126381A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
- H02J7/0049—Detection of fully charged condition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
- H01M6/5044—Cells or batteries structurally combined with cell condition indicating means
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
A protective circuit of a primary battery used for serial connection consists of a limit device which is formed by connecting a positive end and a negative end of the battery. The device does not work when the positive end corresponds to the negative end to form the positive voltage, but, when the polarity of the battery is opposite, that is, when the positive end corresponds to the negative end to form the negative voltage, the voltage of the battery is limited to be at most minus one voltage.
Description
The present invention relates to a kind of series battery protective circuit, to the protection of reverse battery, also can provide the ideal that when batteries charging, prevents to overcharge protection when it can provide battery power discharge.This protection loop is designed at primary cell and chargeable alkaline manganese zinc oxide battery pack, but also can be used for the battery pack of other types.
" protective circuit " this term should be understood to be in the battery pack use, and promptly battery pack has load or battery pack a kind of circuit that (though having only rechargeable battery just can be recharged) links to each other with series battery when being recharged.The difference in this mode and various types of chargers loop is, charger circuit only just links to each other with battery pack in charging process, if perhaps charger circuit also keeps linking to each other with battery pack physically when battery pack has load, they are also inoperative.
Rely in the battery operated electrical equipment at great majority, battery pack all is that series connection is used, because the voltage of single battery is lower than about 1.5V, needs the voltage of several batteries is added up so that required voltage to be provided.An inherent characteristic of series circuit is that onesize in use electric current passes through wherein all elements.If the different battery of capacity is together in series and add that load, the battery of capacity minimum will at first put electricity, if also then load after this, other batteries will drive the common load electric current and pass through exhausted cell.This electric current can make and produce an electrolytic process in the exhausted cell, and its result depends on different battery varieties.Will be oppositely at the alkaline cell Semi-polarity, cell voltage will reach negative 4V.Reversing will produce irreversible effect to battery.The bronze medal pin of the copper member of anode collector-normally will partly decompose in the electrolyte.The existence of copper can be corroded the Zinc material of negative pole, and produces hydrogen in the battery of sealing.The oxygen of during reverse battery, also can emanating out.Gas pressure increases safety vent (safety vent) action may make battery, thereby battery irreversibly is damaged, and the leakage part of any amount of electrolyte of battery may corrode the electric terminal of the equipment that battery is housed.Even safety vent is not the worse for wear, hydrogen also can partly reduce the manganese dioxide cathodes material, and the material that is reduced can not be participated in the reaction of electrolytic cell again, thereby causes the decline significantly of battery capacity.
The trial of multiple chemistry of attempting to address this problem or electrochemistry aspect is arranged, but still do not have gratifying solution so far.
Another consequence of reverse battery is: even a reverse battery is arranged in the battery pack, also can't work by this series battery device driven so.For example, if the battery that 6 rated voltages are 1.5V is used for driving a rated voltage broadcast receiver that is 9V, and reverse battery wherein, be that terminal voltage is-4V (supposing that other 5 batteries still keep the voltage of 1.5V), thereby the terminal voltage of series battery is 5 * 1.5-4=3.5V, and low like this voltage can't be kept wireless work.If with the path in parallel battery bypass that is reverse, the integrated voltage of the 7.5V of remaining workable battery then still can be kept wireless work.
Except the problem of reverse battery when the on-load, the rechargeable battery that several types arranged is also to the overvoltage in the charging process or overcharge very sensitive.For example chargeable alkaline cell can be charged to about 1.7V, can allow high charging voltage to about 1.9V when perhaps having served as voltage application and being no more than the scheduled time.With the charging that is cascaded of several batteries is usually also to be best way, if but these series connected battery are inconsistent, and then that of capacity minimum will at first reach the state that is full of fully.If charging process continues, this battery will be overcharged, and promptly its terminal voltage will increase to and surpass above-mentioned upper voltage limit value, can be to the hurtful oxygen of battery thereby cause producing.
There have been several ways to avoid making battery overcharge.
The such method of the first kind is to measure the terminal voltage of every battery, then interrupts charging process when voltage surpasses predetermined limit value.This method needs sizable cost aspect circuit, can not be used for cheap charger circuit, although the maximum market demand concentrates on cheap charger.
The known method of an other class is with a neat sodium diode or with the combination bridge joint of a Zener diode and conventional diode with battery.When any battery charge during to predetermined voltage, electric current just is transferred in the bypass in the corresponding diode bridge, thereby reduces the electric current that flows through this battery.The advantage of this type of circuit is that several different batteries of discharge condition can charge and the danger that do not overcharge simultaneously, because the charging process of the battery of not substituting the bad for the good can be proceeded by the bypass of the battery of having substituted the bad for the good.Holland publication NL871955 is exactly an exemplary of this charging method.The problem of this type of circuit is: when battery has reached the state of substituting the bad for the good and charger has when being cut off the very important leakage current of a size to flow through from bridgt circuit.This situation can often take place, because being indifferent to usually, the user from charger, takes out battery after charging finishes, charger circuit for good and all connects together with battery in OEM uses, and can only adopt the charger circuit that can not become the load of charged battery pack or make its discharge.
Because the problem of above-mentioned unsolved additives for overcharge protection, the charger loop that is used for chargeable alkaline cell in the market can not make battery be connected in series.Battery is charging separately in these chargers, or with the battery of predetermined number and the charging that connects together.The also downlink connection of battery also has shortcoming, but it is analyzed the scope that has exceeded this specification.
Battery charged separately mean higher cost.A kind of typical single battery charger that is used for chargeable alkaline cell is the trade mark of being made by the ZIRELCO AG. of the Duliken that is positioned at Switzerland sold on the market charger for " Alkaricharger ".This charger can fill four batteries at most, has a Zener diode that is about 3.6V to drive four circuit, and each circuit is connected to the series resistance of respective battery by a Q and a light-emitting diode in parallel with battery formed.When the voltage of battery reached the state of substituting the bad for the good, parallel diode lighted and provides one to prevent that voltage from surpassing the alternate path of maximum permissible value.Diode is lighted and is returned people's one vision indication, shows that this battery substitutes the bad for the good fully.Although this is a kind of effectively charge circuit; but can not be considered to a kind of battery protecting circuit, because finish when charging, charger moves following time battery from power supply and can not be retained in the charger; if like this, battery will be by series resistance and Zener diode discharge.
Main purpose of the present invention provide a kind of when one or many batteries in the series battery because overburden and can avoid taking place the battery protecting circuit of above-mentioned adverse effect oppositely the time effectively.
Another object of the present invention provides a kind of battery protecting circuit, except preventing reverse battery, preferably can also provide effective additives for overcharge protection by every battery to series battery when charging.This is a kind of ball bearing made using, when charge end and battery can not make the significant leakage current load of numerical value on the battery band when take out at the end again.
According to a first aspect of the invention, be no more than-1V if the terminal voltage of reverse battery is limited at most, then the adverse effect of reverse battery just can not take place.If do not allow the terminal voltage of reverse battery to surpass pact-1V, then cause the electrolytic process of battery corrosion, generation hydrogen and oxygen just can not take place.As if can proceed charging with regard to rechargeable battery, battery will show as and not take place equally whatever.
Cell voltage limits several method can be arranged when reverse, but the simplest also be that best method oppositely connects diode at the battery two ends exactly.To connect normal polarity when work backward diode inoperative when battery, is reverse biased because diode bears in this case.Adopt the diode of prior art in fact can not form the reverse current of loading.If but behind the reverse battery, diode will obtain forward bias and and battery shunting.Diode has nonlinear voltage-current curve, dissimilar according to it, its voltage will can not surpass 0.7-0.8V (with regard to adopting typical silicon diode), although its electric current increase is very fast, the typical forward voltage of Schottky diode is 0.4V, and it is not a lot of to that is to say that this diode reverse voltage value of employing can not surpass this magnitude of voltage.Certainly, the specification of backward diode should be considered according to the greatest hope load current.Adopting Zener diode is a kind of desirable selection.
If it is optimal that the battery protection diode is linked to each other with battery forever, the simplest implementation method is that diode is customized in battery.
According to a second aspect of the invention; if each battery or the baby battery group be made up of maximum three continuous batteries are all by the circuit bridge joint of only being made up of semiconductor element; sort circuit can reach the battery that is equivalent to the state of substituting the bad for the good fully to voltage provides main path in parallel; if and cell voltage is equivalent to or do not produce leakage basically when being lower than open circuit voltage, so just can provide sufficient additives for overcharge protection to the rechargeable battery in the battery pack that is connected in series.Such series battery can link to each other with any kind of charger circuit, but the end points of charger can not link to each other with any inner tie point of bridgt circuit, and can only be connected with the end points of series battery.
A kind of desirable additives for overcharge protection circuit can be formed by being connected across the forward diode on protected battery or the battery terminal and the series circuit of a Zener diode.The maximum permissible voltage of battery or battery pack when wherein the Zener voltage sum of the forward voltage of diode and Zener diode equals to charge.
With regard to chargeable alkaline manganese zinc oxide battery, its maximum permissible voltage can be 1.7V, if the forward voltage of diode is 0.6-0.7V, then can adopt the Zener diode of 1.1V.At this moment leakage current can be ignored far below 1mA, promptly can not shorten shelf-lifeing of charging back battery.
If forward diode is a forward voltage to be the Schottky diode of 0.4V then to be desirable, at this moment can adopt the Zener diode of 1.3V.At this moment leakage current is reduced to microampere order.
Find in addition, if with chargeable alkaline manganese zinc oxide battery with series system charging and with the voltage limit of every battery in the series battery at about 1.9V, and when total voltage reaches n times of 1.9V, end charging, wherein n is the number of battery in the series battery, and its cumulative capacity can be higher during battery cycle life (cycle life) like this.Measured cumulative capacity has increased about 20% in initial 15 circulations.
In another most preferred embodiment, bridgt circuit can comprise each light-emitting diode on each battery that is connected across series battery respectively.Light-emitting diode is pressed forward and is connected, promptly when cell voltage near limiting value, it is just lighted during for example about 1.7V.According to the size of cell voltage, a typical red light emitting diodes can form-5 alternate paths to 70mA.Like this, charger should have sufficiently high internal resistance value or voltage-current curve, to impel charging current when voltage (when the voltage of series battery finishes near charging) in this scope, in promptly about 70mA.The leakage current of typical for red light-emitting diode when voltage is lower than 1.5V (open circuit voltage of battery) can be reduced to also insignificant microampere order.A kind of satellite phenomenon of sort circuit is that it can provide a vision indication when charged when corresponding battery is complete.
In when charging maximum battery voltage is limited not only to prevent over-charging of battery (and producing gas), can also make each battery charge unanimity, even the state of charge difference of each battery during the charging beginning.This point is appreciated that it is just shunted by bypass circuit because at first that of electric weight maximum charges electricity earlier, promptly will come to an end to this particular battery charging process, and all the other batteries will continue charging.Final every battery all will be substituted the bad for the good fully.
Present invention is described below in conjunction with most preferred embodiment, simultaneously with reference to the accompanying drawings.Wherein:
Fig. 1 is the circuit diagram of first embodiment;
Fig. 2 is the cycle Capacity Plan of 10 battery pack, and they are discharged to oppositely, and through 28 cycles;
Fig. 3 has the further embodiment of light-emitting diode as the additives for overcharge protection element;
Fig. 4 is the protective circuit of a battery;
Fig. 5 is the curve chart of the cumulative capacity of two test series of expression.
Fig. 1 represents the series battery be made up of 1 to 6 six chargeable alkaline manganese zinc oxide battery.Among 6 backward diode RD1 to RD6 one all is housed respectively in every battery case.Backward diode is conventional silicon diode, and its maximum forward allows electric current to be about 1A, and forward voltage is about 0.7V.The negative electrode of each backward diode links to each other with the anode of respective battery, and anode links to each other with negative terminal.Under normal operation, backward diode RD1-RD6 is inoperative, does not also influence the battery operate as normal.First three battery 1 to 3 is by the series circuit bypass that is linked to be by Zener diode Z1 and diode D1, and other three batteries 4 to 6 link to each other with the similar series circuit that is linked to be by Zener diode Z2 and diode D2.The end points V+ of normal charge device and V-are connected to the respective end of the series loop of battery 1-6 by the current-limiting circuit of being made of resistance R and light-emitting diode LE; The two ends L+ of load (not shown) then links to each other by switch S with L-.
When the series battery on-load, disconnect the charger and the S that closes a switch.The long load of having supposed the battery pack band, a battery capacity wherein be than other batteries, thereby this battery will at first put electricity, if continue on-load, it is the snapback very.Its terminal voltage polarity is just reverse during reverse battery, thereby the backward diode of battery connection therewith will bear forward bias.Reverse voltage can not be pressurized to a lot above this diode drop, because voltage raises again, backward diode is with very fast conducting; When reaching poised state, load current is by backward diode, and the voltage at battery two ends is limited in about 0.7V.Under such stop voltage, to not caused damage by the battery of bypass.The terminal voltage of whole series battery will can and deduct 0.7V with the cell voltage that carries again for all the other, even without that reverse battery, with load still can work on.When not having backward diode, the terminal voltage of this battery will reach-4V, thereby the terminal voltage of whole battery group only has 3.5V, and will be low as can't to make load operation.
When series battery charges once more, can reverse battery not caused damage.
In Fig. 1,, and provide additives for overcharge protection to corresponding three battery pack by the series circuit that Z2 and D2 form respectively by Zener diode Z1 and diode D1.Zener voltage is made as 4.4V, and diode drop is 0.7V, thereby two voltage is added up and formed respectively 5.1V deboost to two three battery pack.If three battery voltages of being made up of battery 1,2,3 and near 5.1V, Zener diode Z1 begins conducting by diode D1, forms a road in parallel warp in parallel with three batteries, and charging current should the parallel connection path with flow path and no longer passed through battery.Thereby avoided battery overcharge.Should be in the scope of 10-15% by the performance difference between the battery of this series circuit bridge joint.This is not an exacting terms for the battery of making under the operating mode of unanimity and select through initial testing.
If corresponding series circuit links to each other with every battery respectively, the function of additives for overcharge protection will be better so.
The effect of backward diode has been set up an experimental test program when setting up reverse battery.In this experimental battery testing program, two groups of 10 RenewalAA batteries (manufacturing of U.S. Rayovac company) series connection is linked to each other to obtain the 15V rated voltage, its main discharge portion is 12V.Series battery is by the bulb discharge of 14V, a 0.2A, and final discharging voltage is made as 9V and 8V respectively.Series battery is discharged to OV so that make the lower reverse battery of capacity in preceding 3 cycles.3 times have only been occurred in the test oppositely.
Battery pack with 500,350 and the charging of the initiation of charge electric current (depending on the setting of a switch) of 250mA, has been used 3,6 and 12 hours respectively to battery charge by a pressure limiting series circuit.The current potential of every battery was 1.65 to 1.70V when charging process finished.Charging circuit is followed always before the battery pack terminal voltage reaches 17V.
The reverse voltage value according to be connected across backward diode type on every battery do not coexist-0.4V is between-the 0.7V.These paths in parallel can be made of a Zener diode, also can be made of light-emitting diode.Equilibrium (equalization) electric current in 1.65 to 1.7V scopes between battery and charge circuit changes (charged state that depends on corresponding battery) between 5 to 70mA.
Fig. 2 is the diagram of initial 28 periodic battery capacity, and the rod figure of the perpendicular line of band represents to be discharged to the battery pack of 8V, and the rod figure of band twill represents to be discharged to the battery pack of 9V.Test shows oppositely and battery is not caused any infringement.The capacity of battery pack depends on those batteries of capacity minimum fully.Those batteries of " better " are in the backstage all the time, promptly when discharge process finishes their electric weight as yet not full consumption fall.The cycle capacity curve of whole battery group is equivalent to the cyclic curve of that reverse at first battery.
Fig. 3 represents of the present invention one further embodiment, and wherein 10 batteries 1 to 10 are connected into one group.These batteries are the chargeable alkaline manganese zinc oxide of AA battery.Battery protecting circuit is made up of the backward diode RD and the LED that are parallel to respectively on every battery.LED is red, presses when battery to begin when being higher than about 1.55V luminously, reaches full brightness when 1.7V, and the electric current that flows through at this moment is about 70mA.When voltage was reduced to 1.5V, leakage current was about 1mA, if voltage is lower than 1.45V, electric current then is a microampere order.
This battery pack is carried out periodic test, that is: the load of 200mA on the battery pack band has been reached 9V up to terminal voltage.Battery did not take place in 30 initial cycles damage (producing gas or leakage), its cycle capacity depends on the curve of that the most weak in battery pack battery.Experimental results show that LED is a kind of outstanding additives for overcharge protection element.
Also the battery pack of another four battery series connection has been carried out the cycle capacity test.The series circuit that additives for overcharge protection loop wherein in parallel with every battery is made up of a forward diode and a Zener diode.Fig. 4 has represented a part of this series connection group.
Elect the forward voltage and the Zener voltage sum of diode as 1.9V intentionally herein, battery can slightly overcharge like this.Charging finishes when assembled battery total voltage reaches 7.6V.In 9 cycles, measure the cumulative capacity of battery pack, and compare with the similar value of the same battery that only is charged to 1.7V.Fig. 5 has represented this cumulative capacity curve of two types.Solid line represents slightly to overcharge the cumulative capacity of battery pack, and dotted line is represented the reference battery group.Show among the figure slightly to overcharge and to increase by 20～30% cumulative capacity.Although at duration of test, all batteries are all functional, also need further test determining if maximum voltage is limited to 1.9V, and battery can hold fair how long slightly overcharge.
Above example shows, battery protecting circuit according to the present invention reverse battery and overcharge sufficient protection all is provided during to discharge, thereby alkaline cell also can be connected into battery pack and uses.This battery protection loop also has further advantage, and they can link to each other with battery always and needn't force adoptable charger and go up harsh requirement.Last but be not that the most less important advantage is: these effective circuit are cheap and simple extremely.
Claims (24)
1. the protective circuit of the primary cell group used of being used to connect; by forming with the restraint device that the anode of battery links to each other with negative terminal; described device is inoperative when the described relatively negative terminal of described anode is positive voltage; and reverse when described battery polar, when promptly described anode becomes negative voltage with respect to described negative terminal cell voltage is defined as at the most-1V.
2. protective circuit as claimed in claim 1, wherein said device is for pressing the diode that rightabout links to each other with described battery two ends.
3. protective circuit as claimed in claim 2, wherein said diode are silicon diode, the about 0.7V of forward voltage.
4. protective circuit as claimed in claim 2, wherein said diode are Schottky diode, and its forward voltage is about 0.4V.
5. protective circuit as claimed in claim 2, wherein said diode are Zener diode, and its forward voltage is about 1 to 1.1V.
6. protective circuit as claimed in claim 1, wherein said diode customizes in described battery.
7. protective circuit as claimed in claim 1, wherein said battery are one of primary cell and chargeable alkaline manganese zinc oxide battery.
8. protective circuit as claimed in claim 1, wherein said diode are the Zener diode that Zener voltage is about 1.7V.
9. protective circuit as claimed in claim 1; also comprise additional additives for overcharge protection device; link to each other with the baby battery group formed by three adjacent batteries at the most in the series battery respectively; described additives for overcharge protection device only is made up of the semiconductor element that bridges at corresponding baby battery group; main alternate path is provided when described baby battery group voltage reaches voltage when being equivalent to that all batteries are fully charged state in the described baby battery group, reduces to the open-circuit voltage values that is equivalent to all batteries in the described baby battery group when described voltage and then interrupt described alternate path when following basically.
10. protective circuit as claimed in claim 9, wherein said baby battery group is made up of a battery.
11. protective circuit as claimed in claim 9; wherein said additives for overcharge protection device is the series circuit of a forward diode and a Zener diode; cross-over connection on the terminal of protected battery or battery pack, the maximum permissible voltage of battery or battery pack when wherein the Zener voltage sum of diode drop and Zener diode equals to charge.
12. protective circuit as claimed in claim 11, wherein said battery are chargeable alkaline manganese zinc oxide battery, its described maximum permissible voltage is about 1.7V, and described diode is a silicon diode, the about 0.6-0.7V of its forward voltage.
13. protective circuit as claimed in claim 11, wherein said battery are chargeable alkaline manganese zinc oxide battery, the about 1.7V of its maximum permissible voltage, described diode are Schottky diode, the about 0.4V of its forward voltage.
14. protective circuit as claimed in claim 11; its described battery is chargeable alkaline manganese zinc oxide battery; described maximum permissible voltage is increased to about 1.9V to increase cumulative capacity; described circuit also comprises a charging abortion means; if total voltage reach 1.9V's " n " doubly just end charging process, wherein n is the battery number in the series battery.
15. protective circuit as claimed in claim 10, wherein said bridgt circuit is made up of difference cross-over connection each light-emitting diode on each battery in series battery, and when voltage reached maximum permissible voltage on the respective battery, light-emitting diode was just luminous with full brightness.
16. protective circuit as claimed in claim 15, wherein said light-emitting diode glows, and its maximum current is in about 70mA scope.
The additives for overcharge protection circuit of the primary cell group of using 17. be used to connect, comprise the additives for overcharge protection device, respectively with described series battery in the baby battery group formed by three batteries that link to each other at the most link to each other, described additives for overcharge protection device only is made up of the semiconductor element that bridges on the corresponding baby battery group; Main alternate path is provided when described baby battery group voltage reaches voltage when being equivalent to that all batteries are fully charged state in the described baby battery group, reduces to the open-circuit voltage values that is equivalent to all batteries in the described baby battery group when described voltage and then interrupt described alternate path when following basically.
18. protective circuit as claimed in claim 17, wherein said baby battery group comprises single battery.
19. protective circuit as claimed in claim 17; wherein said additives for overcharge protection device is the series circuit of a forward diode and a Zener diode; cross-over connection on protected battery or battery pack, the maximum permissible voltage of battery or battery pack when wherein the Zener voltage sum of diode drop and Zener diode equals to charge.
20. protective circuit as claimed in claim 19, wherein said battery are chargeable alkaline manganese zinc oxide battery, its described maximum permissible voltage is about 1.7V; Described diode is a silicon diode, the about 0.6-0.7V of its forward voltage.
21. protective circuit as claimed in claim 19, wherein said battery are chargeable alkaline manganese zinc oxide battery, the about 1.7V of its described maximum permissible voltage, described diode are the about 0.4V of its forward voltage of Schottky diode.
22. protective circuit as claimed in claim 19; wherein said battery is chargeable alkaline manganese zinc oxide battery; described maximum permissible voltage increases to 1.9V to increase cumulative capacity; described circuit also comprises a charging abortion means; if total voltage reach 1.9V's " n " doubly just end charging process, wherein n is the battery number in the series battery.
23. protective circuit as claimed in claim 18, wherein said bridgt circuit is made up of difference cross-over connection each light-emitting diode on each battery in series battery, and when voltage reached maximum permissible voltage on the respective battery, it is luminous that light-emitting diode is just recognized full brightness.
24. protective circuit as claimed in claim 23, wherein said light-emitting diode glows, and its maximum current is in the 70mA scope.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU9402665A HUT76224A (en) | 1994-09-16 | 1994-09-16 | Protection circuit for cells used in a series chain |
| HU9402665 | 1994-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1126381A true CN1126381A (en) | 1996-07-10 |
Family
ID=10985593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95102070A Pending CN1126381A (en) | 1994-09-16 | 1995-03-09 | Protection circuit for cells used in a series chain |
Country Status (7)
| Country | Link |
|---|---|
| KR (1) | KR970706635A (en) |
| CN (1) | CN1126381A (en) |
| AU (1) | AU3352895A (en) |
| CA (1) | CA2200187A1 (en) |
| HU (1) | HUT76224A (en) |
| TW (1) | TW346696B (en) |
| WO (1) | WO1996008860A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426698C (en) * | 2001-11-09 | 2008-10-15 | 株式会社Ntt都科摩 | Information rate control method, mobile station, radio control apparatus, base station, and mobile communication system |
| CN103346283A (en) * | 2013-07-02 | 2013-10-09 | 杭州新研动力能源有限公司 | Protection method for nickel-zinc batteries |
| CN103427411A (en) * | 2013-09-09 | 2013-12-04 | 杭州协能科技有限公司 | Breakage protective circuit for serially-connected energy module connecting pieces based on diodes |
| CN103475082A (en) * | 2013-08-16 | 2013-12-25 | 广州泓淮电子科技有限公司 | Storage battery monomer displacement method |
| CN110247127A (en) * | 2003-11-24 | 2019-09-17 | 密尔沃基电动工具公司 | Operation containing battery pack and the method and power tool battery group for running battery pack |
| US11469608B2 (en) | 2002-11-22 | 2022-10-11 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE511530C2 (en) * | 1993-12-23 | 1999-10-11 | Atos Medical Ab | Device for a stoma absorbed in the throat |
| US6268714B1 (en) * | 1999-05-07 | 2001-07-31 | Tai-Her Yang | Voltage limiting circuit connected in parallel with a battery set and including a series-connected impedance which permits linear adjustments |
| US6628085B2 (en) * | 2001-01-17 | 2003-09-30 | Tai-Her Yang | Limit voltage circuit using light emitting diodes as thermal-loss reducing impedances, especially for matching a saturation voltage of rechargeable cells during charging |
| FR2863786A1 (en) * | 2003-12-16 | 2005-06-17 | Cit Alcatel | Rechargeable battery, has compensation circuits connected to modules, and has two-terminal circuits mounted in parallel and arranged for inducing permanent discharge current at corresponding module, according to voltages of terminals |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3148322A (en) * | 1961-03-13 | 1964-09-08 | Mallory & Co Inc P R | Rechargeable battery with means to prevent overcharging |
| US4303877A (en) * | 1978-05-05 | 1981-12-01 | Brown, Boveri & Cie Aktiengesellschaft | Circuit for protecting storage cells |
| US4719401A (en) * | 1985-12-04 | 1988-01-12 | Powerplex Technologies, Inc. | Zener diode looping element for protecting a battery cell |
-
1994
- 1994-09-16 HU HU9402665A patent/HUT76224A/en unknown
-
1995
- 1995-03-04 TW TW084102081A patent/TW346696B/en active
- 1995-03-09 CN CN95102070A patent/CN1126381A/en active Pending
- 1995-09-15 WO PCT/IB1995/000762 patent/WO1996008860A1/en not_active Application Discontinuation
- 1995-09-15 AU AU33528/95A patent/AU3352895A/en not_active Abandoned
- 1995-09-15 KR KR1019970701695A patent/KR970706635A/en not_active Application Discontinuation
- 1995-09-15 CA CA002200187A patent/CA2200187A1/en not_active Abandoned
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426698C (en) * | 2001-11-09 | 2008-10-15 | 株式会社Ntt都科摩 | Information rate control method, mobile station, radio control apparatus, base station, and mobile communication system |
| US11469608B2 (en) | 2002-11-22 | 2022-10-11 | Milwaukee Electric Tool Corporation | Lithium-based battery pack for a hand held power tool |
| CN110247127A (en) * | 2003-11-24 | 2019-09-17 | 密尔沃基电动工具公司 | Operation containing battery pack and the method and power tool battery group for running battery pack |
| CN110247127B (en) * | 2003-11-24 | 2022-08-26 | 密尔沃基电动工具公司 | Battery pack, method for operating a battery pack, and electric tool battery pack |
| CN103346283A (en) * | 2013-07-02 | 2013-10-09 | 杭州新研动力能源有限公司 | Protection method for nickel-zinc batteries |
| CN103475082A (en) * | 2013-08-16 | 2013-12-25 | 广州泓淮电子科技有限公司 | Storage battery monomer displacement method |
| CN103427411A (en) * | 2013-09-09 | 2013-12-04 | 杭州协能科技有限公司 | Breakage protective circuit for serially-connected energy module connecting pieces based on diodes |
| CN103427411B (en) * | 2013-09-09 | 2018-03-30 | 杭州协能科技股份有限公司 | A kind of series connection energy component connecting piece fracture protection circuit based on diode |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2200187A1 (en) | 1996-03-21 |
| TW346696B (en) | 1998-12-01 |
| AU3352895A (en) | 1996-03-29 |
| WO1996008860A1 (en) | 1996-03-21 |
| KR970706635A (en) | 1997-11-03 |
| HUT76224A (en) | 1997-07-28 |
| HU9402665D0 (en) | 1994-11-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |