CN101728852B - Battery equilibrium charging and detecting and repairing device - Google Patents
Battery equilibrium charging and detecting and repairing device Download PDFInfo
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- CN101728852B CN101728852B CN2009101145204A CN200910114520A CN101728852B CN 101728852 B CN101728852 B CN 101728852B CN 2009101145204 A CN2009101145204 A CN 2009101145204A CN 200910114520 A CN200910114520 A CN 200910114520A CN 101728852 B CN101728852 B CN 101728852B
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Abstract
The invention discloses a battery equilibrium charging and inspecting and repairing device comprising a power circuit, an electronic switching circuit, a detecting control circuit and a charging pending/detecting pending battery unit, wherein both ends of each battery in the battery unit are respectively connected to at least one electronic switch in the electronic switching circuit; each electronic switch is an NMOS logic circuit working in the switch status, and the logic control end of the NMOS logic circuit is connected to the grid electrode of a corresponding N-type field effect tube; and the logic control end of each electronic switch connected to the anode of each battery is also provided with a subcircuit connected to a negative power supply by a resistor. The battery equilibrium charging and inspecting and repairing device can realize charging autoadaptation and carries out any combination of equilibrium charging on each battery in the battery unit; the full N-type field effect tube is adopted, enabling the circuit to be simpler and more reliable; and linear isolation measurement and multiple safety isolation are adopted, thereby solving the problems of danger, low precision and virtual ground of measurement and control. The invention can also be used as a battery load on-line tester.
Description
Technical field
The present invention relates to a kind of battery charger, more particularly relate to a kind of battery equilibrium charging and detect prosthetic device.
Background technology
Advantages such as valve-control sealed lead acid battery (VRLA) is inexpensive with it, capacity is big, efficient is high, good reliability, the present electrical source of power that still is widely used as electric motor car.In the practical application, often 2 above batteries being together in series becomes the collaborative power that provides of battery pack.When battery capacity is not enough, through charging device it is charged again, to realize use repeatedly.
For the battery pack of this collaborative work that is together in series, present common battery charger, employing be the tandem type charging circuit, i.e. the positive pole of charger dc output end is received the positive pole of first battery in the series battery; And the negative pole of a series battery end battery links to each other with the negative pole of charger dc output end.Since battery pack dispatch from the factory with use in; Can produce the property difference such as internal resistance and voltage of each battery unavoidably; So; Though this tandem type charging circuit is simple in structure, easily the more weak battery of performance in the battery pack is produced when using for a long time and overcharges (show as overheated, swell, distortion etc.), thereby influence useful life of battery.
In addition, the existing storage battery equalization charging circuit, employing be that P type FET mixes the electronic switching circuit of forming batteries is carried out equalizing charge control with N type FET.N type FET (NMOS) is because more stable than P type FET; So be usually used in forming in the switching power circuit stable with ripe design; But find: use the electronic switch of the FET (NMOS) of full N type, often can only be designed in the batteries charging circuit below the 36V as equalization charging circuit through experiment test; After surpassing more than the 36V; When selecting a highest battery of voltage to earth to charge; Battery pack self layer adds the high voltage that and is applied to the back loop that forms in the charging circuit; The full N type FET (NMOS) that usually causes plaing in the circuit switch switching effect oneself also can conducting when not having control signal (under current state even burn out), makes circuit stability very poor.This phenomenon has more on the NMOS pipe that links with them of the highest battery of present voltage to earth and second battery of connecting with it.The voltage that is recharged the pond stack is high more, and the reverse voltage in the charge circuit is just strong more.Although also occurred adopting the scheme of this loop voltage of special key element separation at present,, adopted the product of this technical scheme also can't popularize in market because these particular components prices are very high.
Summary of the invention
The object of the invention promptly is to provide a kind of and can solves the battery equilibrium charging of above-mentioned deficiency and detect prosthetic device.This battery equilibrium charging and detection prosthetic device not only are applicable to the batteries of voltage less than 36V, also can carry out the equilibrium charging of combination in any to in-line big voltage battery group (36V/48V/60V etc.).
For realizing above-mentioned purpose, battery equilibrium charging of the present invention and detection prosthetic device include continuous successively power circuit, electronic switching circuit, wait to fill/battery unit to be checked, and detect control circuit; Said battery unit includes one or more batteries, and said a plurality of batteries are series connection or part series connection;
Said power circuit comprises providing multichannel controllable charge power supply, and assists and use positive and negative duplicate supply;
Each battery two ends in the said battery unit respectively are connected at least one electronic switch of said electronic switching circuit and the input of said detection control circuit; And the other end of said each electronic switch looks the pairing battery polar of this electronic switch and decides, and is connected to the charging output or the earth terminal of said power circuit;
Each electronic switch in the said electronic switching circuit is the NMOS logical circuit that works on off state;
The logic control end of said each electronic switch, an end links to each other with the corresponding output of said detection control circuit; The other end is connected to the grid of corresponding N type FET;
On the logic control end of said each electronic switch that is connected to each anode, also be provided with the branch road that is connected to negative supply through resistance.The parameter of resistance and negative supply in the said branch road is decided according to the positive voltage of circuit power and the charging voltage of actual needs, and negative supply voltage is not less than the voltage that inserts whole group of series-connected cell to be filled.
Electronic switch in the such scheme is a kind of buffer circuit between actual a kind of power supply and the pond to be charged.Further improvement as to above-mentioned battery equilibrium charging and detection prosthetic device also can be provided with the multilayer isolated location between above-mentioned each element circuit; Said each isolated location includes the electronic switch that is arranged on each element circuit input and output.
Said each isolated location include power supply control and isolate, and/or voltage measurement is isolated, and/or control signal is isolated, and/or the driving of electronic switch is isolated, and/or, linear isolation measurement.
As further optimization to above-mentioned battery equilibrium charging and detection prosthetic device; Said charge power supply selectively provides at least 2 group charging currents; Comprise equalizing charge electric current and fast charging current, the big electric current charge independence of row when being used for selecting to single battery, and/or improve charging rate.
The battery equilibrium charging of the present invention of detailed description and detect each the concrete element circuit in the prosthetic device not adopts the existing routine techniques in this area to get final product hereinbefore.
By on can know battery equilibrium charging of the present invention and detect prosthetic device and have following advantage:
1, can adopt full N type FET, make circuit simple more and reliable.
2, adopt positive and negative accessory power supply (+V ,-V) servo circuit: positive voltage can be strengthened the driving force of N type effect pipe, guarantees FET conducting fully; But the reverse voltage that the stack of negative voltage balancing battery forms is absorbed loop voltage, has guaranteed the circuit network balance, makes charge and discharge process more reliable and more stable.
Charging circuit of the present invention exactly because adopted positive and negative accessory power supply, could realize adopting full N type FET to make electronic switch, and one of them battery of any selection of realization group series-connected cell carries out independence, safe charging.If there is not positive-negative power, the full N type FET in the charging circuit can be easy to burnt out.
The multi-level safety isolated locations such as driving isolation of 3, power supply control isolation, voltage measurement isolation, control signal isolation, electronic switch, the system that guaranteed has reliable stand-alone capability in control procedure.
4, linear optical coupling isolation measurement can guarantee that system obtains more precisely (precision 0.1～0.01V) reliable continuous data at observation process.
5, safety is isolated and the linear optical coupling isolation measurement, has also solved the virtual earth problem of measuring and controlling.
6, can realize charging automatic the adaptation: can be according to charging voltage, charging current and other parameter of each independent battery in the real-time detected battery pack; At any time adjust the optimal charge parameter; Guarantee that each battery can not overcharge, owe to fill, and guarantees the equilibrium charging of each battery in the battery pack.
For example; Can begin charging from the minimum battery of voltage through detecting the break-make of control circuit control respective electronic switch, remaining power then carries out maintenance with the floating charge mode; When each cell voltage is the same by the time, charge simultaneously with same electric current each battery again to series connection.
Again for example, can charge to single battery or a plurality of series battery arbitrarily, in conjunction with correspondent control circuits; Concrete charge characteristic according to inserting each battery is provided with different charge modes; As: two, three stage charging modes, positive negative pulse stuffing mode, the control of full voltage slope; The small and weak mode of preferentially filling, supervisors such as independent charging modes separately, thus can be to storage battery, lithium battery, ni-mh, dissimilar rechargeable battery such as NI-G is carried out charging.
7, can carry out the equilibrium charging of combination in any to in-line big voltage battery group (36V/48V/60V etc.).As, do not changing under original storage battery cascaded structure, can realize single battery is charged.
8, adopt the duplicate supply power supply, can select single battery is carried out big electric current charge independence, and/or improve charging rate.Two groups of power supplys are worked simultaneously, can realize the effect of quick charge and big current balance charging simultaneously.
Obviously, battery equilibrium charging of the present invention and detection prosthetic device not only can be used for the daily charging of battery, also can be used for the detection reparation of battery, even, also can be used as accumulator load on-line testing device.For example, in the electric vehicle running process, detect the performance quality of each battery in the battery pack etc.
Description of drawings
Fig. 1 is battery equilibrium charging of the present invention and the basic principle block diagram that detects prosthetic device.
Fig. 2 is battery equilibrium charging of the present invention and the circuit theory diagrams that detect an embodiment of prosthetic device.
Fig. 3 is the circuit diagram of an embodiment of the electronic switch of battery equilibrium charging of the present invention and the connection GND that detects prosthetic device.
Fig. 4 is the circuit diagram of an embodiment of the electronic switch of battery equilibrium charging of the present invention and the connection anode that detects prosthetic device.
Fig. 5 is battery equilibrium charging of the present invention and another enforcement theory diagram that detects prosthetic device.
Fig. 6 is battery equilibrium charging of the present invention and the another enforcement theory diagram that detects prosthetic device.
Embodiment
Below in conjunction with accompanying drawing battery equilibrium charging of the present invention and detection prosthetic device are further described.
Fig. 1 is battery equilibrium charging of the present invention and the theory diagram that detects prosthetic device.Like figure, the present invention includes power circuit, electronic switching circuit detects control circuit, and waits to fill/battery unit to be checked.Power circuit, except the auxilliary power supply of using is provided to other partial circuit of this device, also through electronic switching circuit to wait to fill/battery unit to be checked provides multichannel controllable charge power supply; The break-make of each electronic switch in the electronic switching circuit, by detect control circuit according to from wait to fill/testing result that battery unit to be checked obtains judges control.
Fig. 2 is battery equilibrium charging of the present invention and the circuit theory diagrams that detect prosthetic device.Like figure, power circuit provides multichannel charge power supply V to fill, and the positive and negative duplicate supply+V/-V of auxilliary usefulness that is used to other element circuit power supply; Wait to fill/battery unit to be checked includes a plurality of series-connected cells.The two ends of each battery all have line to be connected to the input that detects control circuit; The two ends of each battery, (like figure, the negative pole of battery B1 meets K0, and positive pole meets K1 also respectively to be connected with 2 electronic switches; The negative pole of battery B2 meets K2, and positive pole meets K3); The other end of each electronic switch, be connected to power circuit charging output or earth terminal (negative side of each battery to inductive switch ground connection, like K0 and K2; The side of the positive electrode of each battery to inductive switch, like K1 and K3, be connected to charge power supply V
Fill); The logic control end of each electronic switch links to each other with the corresponding output that detects control circuit; Be connected to the logic control end of each electronic switch (like K1 and K3) of each anode, also have the branch road that is connected to negative supply-V through resistance R.Negative supply voltage-V is not less than the voltage that inserts whole group of series-connected cell to be filled.
Each electronic switch in the electronic switching circuit works in the NMOS logical circuit of on off state.With N type FET is the concrete logical circuit that major component is used as electronic switch, and prior art that can reference has many.As shown in Figure 3 is connects the circuit diagram of an embodiment of the electronic switch (like K0 and K2) of GND.Like figure, the grid of N type FET through the signal amplification circuit in its left side, is received the corresponding output that detects control circuit; And the two poles of the earth are leaked in its source, connect the negative pole of battery (corresponding to B1 and B2) and the earth terminal of power circuit respectively.
And Fig. 4 is the circuit diagram of an embodiment that connects the electronic switch (like K1 and K3) of anode.Like figure, the grid of N type FET through the signal transfer circuit in its left side, is received the corresponding output that detects control circuit; And the two poles of the earth are leaked in its source, connect the charge power supply output of anode (corresponding to B1 and B2) and power circuit respectively.Especially, at the grid of N type FET, also be provided with one and be connected to the branch road of negative supply-V, shown in circular empty frame among the figure through resistance R.
The course of work of battery equilibrium charging of the present invention as implied above and detection prosthetic device is: after battery inserts; Detect the performance parameters such as quantity, position and real-time voltage electric current that control circuit judges that battery inserts; Then through controlling the break-make of each electronic switch; Each battery is equipped with the optimal charge parameter discharges and recharges, and in charge and discharge process, monitor at any time and adjust.
Can know by above-mentioned analysis; Because the both positive and negative polarity of each battery all is furnished with electronic switch; So, battery equilibrium charging of the present invention and detect prosthetic device and can charge to single battery or a plurality of series battery or even different batteries arbitrarily, and; Can also different charge modes be set according to the concrete charge characteristic that inserts each battery, that is: can realize charging adapts to automatically.
Fig. 5 is battery equilibrium charging of the present invention and another enforcement theory diagram that detects prosthetic device.
In the present embodiment, compare with previous embodiment, between each element circuit, be provided with the multilayer isolated location, control is isolated like power supply, and voltage measurement is isolated, and control signal is isolated, and the driving of electronic switch is isolated.This isolated location can adopt above-mentioned electronic switch to constitute.
Fig. 6 is battery equilibrium charging of the present invention and the another enforcement theory diagram that detects prosthetic device.
In the present embodiment; Adopt the duplicate supply power supply so that 2 groups of charging currents to be provided; Be equalizing charge electric current and fast charging current, the big electric current charge independence of row in the time of can selecting single battery, and/or improve charging rate; Two groups of power supplys are worked simultaneously, can realize the effect of quick charge and big current balance charging simultaneously.
Supplementary notes: the battery equilibrium charging of the present invention of detailed description and detect each the concrete element circuit in the prosthetic device not hereinbefore, like power circuit, detect control circuit, adopt the existing routine techniques in this area to get final product, be not described in detail in this.What particularly point out is that the mode of realization generating positive and negative voltage circuit has a variety of, can change into negative and positive dual power with the single supply dividing potential drop, also can be integrated into the circuit of a part of univoltage conversion generating positive and negative voltage in the application-specific integrated circuit (integrated circuit).
Claims (4)
1. battery equilibrium charging and detection prosthetic device include continuous successively power circuit, electronic switching circuit, wait to fill/battery unit to be checked, and detect control circuit; Said battery unit includes one or more batteries, and said a plurality of batteries are series connection or part series connection; It is characterized in that:
Said power circuit comprises providing multichannel controllable charge power supply, and assists and use positive and negative duplicate supply;
Each battery two ends in the said battery unit respectively are connected at least one electronic switch of said electronic switching circuit and the input of said detection control circuit; And the other end of said each electronic switch is connected to the charging output or the earth terminal of said power circuit; Wherein, the other end ground connection of the electronic switch that GND connected, the other end of the electronic switch that anode connected connects the charging output of said power circuit;
Each electronic switch in the said electronic switching circuit is the NMOS logical circuit that works on off state;
The logic control end of said each electronic switch, the one of which end links to each other with the corresponding output of said detection control circuit; The other end is connected to the grid of corresponding N type FET;
On the logic control end of said each electronic switch that is connected to each anode, also be provided with the branch road that is connected to negative supply through resistance; The negative supply voltage that connects is not less than the voltage that inserts whole group of series-connected cell to be filled;
In said electronic switching circuit, said assisting is connected to the electronic switch that is connected with GND with positive supply.
2. battery equilibrium charging according to claim 1 and detection prosthetic device is characterized in that: between said each element circuit, also be provided with the multilayer isolated location; Said each isolated location includes the electronic switch that is arranged on each element circuit input and output.
3. battery equilibrium charging according to claim 2 and detection prosthetic device is characterized in that: said each isolated location, and include power supply control and isolate, and/or; Voltage measurement is isolated, and/or control signal is isolated, and/or; The driving of electronic switch is isolated, and/or, linear isolation measurement.
4. according to described battery equilibrium charging of one of claim 1 to 3 and detection prosthetic device, it is characterized in that: said charge power supply selectively provides at least 2 group charging currents, comprises equalizing charge electric current and fast charging current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101145204A CN101728852B (en) | 2009-11-04 | 2009-11-04 | Battery equilibrium charging and detecting and repairing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101145204A CN101728852B (en) | 2009-11-04 | 2009-11-04 | Battery equilibrium charging and detecting and repairing device |
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| CN101728852A CN101728852A (en) | 2010-06-09 |
| CN101728852B true CN101728852B (en) | 2012-05-02 |
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| CN2009101145204A Expired - Fee Related CN101728852B (en) | 2009-11-04 | 2009-11-04 | Battery equilibrium charging and detecting and repairing device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5576250B2 (en) | 2010-11-25 | 2014-08-20 | 株式会社デンソー | Voltage measuring device |
| CN102122737B (en) * | 2010-12-30 | 2014-06-11 | 东莞市奇立电源有限公司 | Method and device for charging in multiple modes through driving switch by battery |
| CN105021998A (en) * | 2015-08-11 | 2015-11-04 | 深圳市亿通科技有限公司 | Battery voltage detection device and electronic equipment |
| CN105356549B (en) * | 2015-10-28 | 2018-03-20 | 深圳市盈动力科技有限公司 | High pressure lithium battery pack and the portable electrical equipment for including the high pressure lithium battery pack |
| CN108235702B (en) | 2016-10-09 | 2022-01-14 | 深圳市道通智能航空技术股份有限公司 | Cloud deck, unmanned aerial vehicle and control method thereof |
| CN109478789A (en) * | 2016-10-13 | 2019-03-15 | 深圳市道通智能航空技术有限公司 | A kind of charging circuit and device |
| CN112305445A (en) * | 2020-09-28 | 2021-02-02 | 南京迪沃航空技术有限公司 | High-voltage charging detection circuit and equalization control protection system with same |
| CN113559350A (en) * | 2021-08-02 | 2021-10-29 | 北京哈特凯尔医疗科技有限公司 | Control circuit of hydration treatment liquid inlet and outlet balance system |
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| CN101051699A (en) * | 2006-04-05 | 2007-10-10 | 上海云骅电子科技有限公司 | Charging method with battery volume repair function and charger using said method |
| CN101145700A (en) * | 2007-07-30 | 2008-03-19 | 张志贤 | A serial connection charge balance control circuit and control method for smart battery group |
| CN201556950U (en) * | 2009-11-04 | 2010-08-18 | 秦永振 | Device for balancing charging and detecting repair of battery |
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2009
- 2009-11-04 CN CN2009101145204A patent/CN101728852B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051699A (en) * | 2006-04-05 | 2007-10-10 | 上海云骅电子科技有限公司 | Charging method with battery volume repair function and charger using said method |
| CN101145700A (en) * | 2007-07-30 | 2008-03-19 | 张志贤 | A serial connection charge balance control circuit and control method for smart battery group |
| CN201556950U (en) * | 2009-11-04 | 2010-08-18 | 秦永振 | Device for balancing charging and detecting repair of battery |
Non-Patent Citations (2)
| Title |
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| JP特开2002-369400A 2002.12.20 |
| JP特开平11-283678A 1999.10.15 |
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| CN101728852A (en) | 2010-06-09 |
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