CN201797333U - Electrical quantity transfer circuit of storage battery - Google Patents
Electrical quantity transfer circuit of storage battery Download PDFInfo
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- CN201797333U CN201797333U CN2010202538463U CN201020253846U CN201797333U CN 201797333 U CN201797333 U CN 201797333U CN 2010202538463 U CN2010202538463 U CN 2010202538463U CN 201020253846 U CN201020253846 U CN 201020253846U CN 201797333 U CN201797333 U CN 201797333U
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Abstract
The utility model discloses an electrical quantity transfer circuit of a storage battery, comprising a storage battery group and a plurality of capacitors, wherein the storage batter group is formed by in-series connection of more than two single storage batteries; and each single storage battery is respectively connected with a single capacitor by a control device so as to realize that the electrical quantity of the single storage battery with higher voltage in the storage battery group is transferred into the single storage battery with lower voltage. As the technical scheme is adopted, in n single storage batteries connected in series, the automatic voltage balance relation between the capacitor and the storage battery is utilized to enable the voltages of all the storage batteries to be consistent, monitoring is carried out to the single storage battery, the electrical quantity of the higher-capacity storage battery is transferred into the lower-capacity storage battery, the fault of the storage battery caused by difference among the storage batteries is eliminated, and the consistency of the storage batteries is guaranteed.
Description
Technical field
The utility model relates to a kind of storage battery balancing circuit.
Background technology
Electric motor car is the vehicles of making energy source with storage battery.Can better guarantee the electric motor car operation to each the cell balanced management of batteries inside, prolong the useful life of battery, reduce the use cost of electric motor car.
Existing lead acid accumulator management system is generally just carried out voltage monitoring to single storage battery in the batteries, monitoring to the accumulator cell charging and discharging electric current, then monitoring result is analyzed, storage battery is controlled undesired use such as prevent overdischarge, overcharge with prompting user (perhaps information being passed to control system).This mode requires the user to control artificially or is controlled by other control assembly with exporting control signal, is difficult to produce a desired effect.
The charger of existing storage battery is a system independently, its charge mode is by the charger factory settings, because the client uses charger not to be in slave mode, charge mode and storage battery do not match, and charger does not have in real time and the long-term function of monitoring and adjusting charging in good time simultaneously, does not have accumulator meter surface temperature acquisition function, concerning storage battery, such charging method is unreasonable or even harmful, causes the storage battery quick decay in useful life, even scraps in advance.
Existing single battery equalizing system, the overwhelming majority is a shunt resistance type cell balanced way, promptly is at the storage battery positive and negative electrode and connects bypass resistance and be responsible for, its break-make is realized by electronic switch.The storage battery equalizing system is according to the charge in batteries voltage condition, unnecessary electric current is passed through from bypass circuit, and do not pass through storage battery, avoid overcharging and owe and charge, and improve charge efficiency, avoid and reduce the charging side reaction taking place, reduce the storage battery percentage of water loss, reduce the pole plate corrosion, prolong storage battery and recycle the life-span; But now the cell equalizer is so not only wasted electric energy with resistance shunt method, also can only carry out equilibrium to battery in charging process simultaneously, and is not balanced in discharge process, tends to occur overdischarge, causes overdischarge and quick decay occurs.
Inductance copped wave buck mode equalizer is to adopt inductance step-up/step-down circuit (BOOST/BUCK), with the electric energy transfer of a storage battery in adjacent storage battery.Working method is: connect a HF switch, a storage battery in the batteries is charged to inductance, through the regular hour, close HF switch, the energy in the inductance is transferred in the adjacent circuit.HF switch is an electronic circuit that comprises oscillator and electronic switch.The entire circuit relative complex.
The defective of prior art: the shunt resistance consumed energy, and can only be in charging process could be effectively.Inductance chopping way volume is bigger, the control difficulty, and cost is high relatively.The mode that energy shifts is single.Be unfavorable for miniaturization, and can produce electromagnetic interference.
The utility model content
Technical problem to be solved in the utility model provides a kind of accumulator electric-quantity carry circuit, voltage to single storage battery is monitored, and the electric weight of the storage battery that capacity is higher is transferred in the lower storage battery of battery capacity, eliminated because the difference between the battery causes accumulator failure, guaranteed the consistency of storage battery.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the accumulator electric-quantity carry circuit, comprise batteries and some electric capacity, described batteries is that two above cell batteries are in series, each cell batteries is in parallel with single electric capacity by control device respectively, realizes that the cell batteries electric weight that voltage in the batteries is higher transfers in the lower cell batteries of voltage.
Described control device is switch and a diode in parallel.
Described control device is a field effect transistor.
Described cell batteries comprises lead acid accumulator or lithium battery or Ni-MH battery.
The utility model is owing to adopted technique scheme, in n cell batteries of series connection, automatic balance of voltage relation is consistent the voltage of all storage batterys between electric capacity and the storage battery by utilizing, voltage to single storage battery is monitored, and the electric weight of the storage battery that capacity is higher is transferred in the lower storage battery of battery capacity, eliminated because the difference between the battery causes accumulator failure, guaranteed the consistency of storage battery.
Description of drawings
Fig. 1 is the structural representation of the utility model accumulator electric-quantity carry circuit embodiment one.
Fig. 2 is the structural representation of the utility model accumulator electric-quantity carry circuit embodiment two.
Fig. 3 is the structural representation of the utility model accumulator electric-quantity carry circuit embodiment three.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Fig. 1 is the structural representation of the utility model accumulator electric-quantity carry circuit embodiment one, the positive pole of the first storage battery BATT1 in the circuit diagram is received the end of the first K switch A1 of first group of switch, the other end of the first K switch A1 of first group of switch links to each other with the end of the second switch KB1 of the C1 negative pole of first electric capacity and first group of switch, first group of K switch A1, KB1 two ends are parallel diode DA1, DB1 respectively, switch and and the diode that connects can be integrated in the device.The negative pole of the first storage battery BATT1 is connected with second switch KB1 one end of first group of switch.The negative pole of the second storage battery BATT2 links to each other with the positive pole of the first storage battery BATT1.The positive pole of the second storage battery BATT2 is received the end of the first K switch A2 of second group of switch, the other end of the first K switch A2 of second group of switch links to each other with the end of the second switch KB2 of the C2 negative pole of second electric capacity and second group of switch, parallel diode DA2, DB2 are distinguished in second group of K switch A2, KB2 two ends, switch and and the diode that connects can be integrated in the device ..., the negative pole of n storage battery BATTn links to each other with the positive pole of n-1 storage battery BATTn-1.Described control device is the electronic device that field effect transistor (MOSFET), bipolar transistor, electromagnetic relay etc. have the turn-on and turn-off ability.
When in parallel with the higher cell batteries of voltage, the higher cell batteries of voltage charges to electric capacity by switch, and when in parallel with the lower cell batteries of voltage, the part electric weight in the electric capacity charges in the lower cell batteries of voltage.
Storage battery quantity is positive integer n (n 〉=2), and the quantity of electric capacity just in time equals storage battery quantity n and subtracts 1, and the quantity of K switch A, KB equals n, is parallel to the diode DA of switch, the quantity of DB equals n.Can realize transferring to the electric weight of n (n 〉=2) batteries of only connecting in any battery or n-1 only connects in the batteries.Described cell batteries comprises lead acid accumulator or lithium battery or Ni-MH battery.
Energy transfer principles 1: the sample circuit by microprocessor carries out voltage acquisition to storage battery, the size of more adjacent two battery tensions, (for example: first battery tension is lower to connect one group of higher switch of connection voltage, then connect the second switch KB1 of first group of switch and the second switch KB2 of second group of switch), make the higher storage battery of voltage (for example: the first storage battery BATT1) (for example: first capacitor C 1) charge to electric capacity.Through certain hour, close above-described one group of switch, (for example: first capacitor C 1) (for example: the one group of switch that is connected (for example: first K switch A1 of first group of switch and the first K switch A2 of second group of switch) the second storage battery BATT2) charges into storage battery with the electric energy in the electric capacity with the low storage battery of voltage to connect this electric capacity.Be implemented in two storage batterys of adjacent series connection, the electric weight in the higher storage battery of voltage is shifted to the lower storage battery of voltage.In like manner, when the second storage battery BATT2 voltage is higher, also can give first storage battery BATT1 charging.
Electric energy transfer principle 2: the sample circuit by microprocessor carries out voltage acquisition to storage battery, one group of switch that connection is connected with adjacent two storage batterys (for example: the first K switch A2 of the second switch KB1 of first group of switch and second group of switch), make adjacent two storage batterys (for example: the first storage battery BATT1 and the second storage battery BATT2) connect simultaneously electric capacity is charged.Through certain hour, close above-described one group of switch.That connects a group storage battery group in this electric capacity and above-mentioned two group storage batteries is connected switch (for example: be the second switch KB2 that the first K switch B1 and second that first group of switch then connected in first storage battery BATT1 charging gives switch), and the electric energy in the electric capacity is charged in the storage battery.Two storage batterys realizing adjacent series connection are to the wherein electric weight transfer of a storage battery.In like manner, be second storage battery BATT2 charging, then connect the first K switch A1 of first group of switch and the second switch KB2 of second group of switch.
Energy transfer principles 3: the sample circuit by microprocessor carries out voltage acquisition to storage battery, (for example: the first K switch A3 of the second switch KB1 of first group of switch and the 3rd group of switch), capacitor C 1 and C2 that adjacent three storage batterys (for example: the first storage battery BATT1, the second storage battery BATT2 and the 3rd storage battery) are connected simultaneously to two series connection charge to connect one group of switch connecting with adjacent three storage batterys.Through certain hour, close above-described one group of switch.That connects any two batteries in this electric capacity and above-mentioned three group storage batteries (for example: be that the second switch KB1 of first group of switch and the second switch KB2 of second group of switch are then connected in first storage battery BATT1 charging is connected switch.Be that first K switch A3 of the 3rd group of switch and the first K switch A2 of second group of switch are then connected in the 3rd storage battery BATT3 charging.), the electric energy in the electric capacity is charged in the storage battery.Three storage batterys realizing adjacent series connection are to the wherein electric weight transfer of any two storage batterys.In like manner, be second storage battery BATT2 charging, then connect first K switch A1 of first group of switch and the first K switch A2 of second group of switch.
Energy transfer principles 4: need be, connect the second switch KB1 that connects first group of switch and the second switch KB2 of second group of switch, the first storage battery BATT1 is charged to first capacitor C 1 or discharge by under the microprocessor judges cell voltage state.Through certain hour, close above-described one group of switch, connect the first K switch A1 of first capacitor C 1 and first group of switch and the K switch A2 of second group of switch, 1 couple second storage battery BATT2 of first capacitor C is charged or discharge.Through certain hour, close above-described one group of switch, connect the second switch KB1 of second group of switch of connection and the second switch KB3 of the 3rd group of switch, the second storage battery BATT2 is charged to second capacitor C 2 or discharge ... through certain hour, close above-described one group of switch, connect the first K switch An of n capacitor C n and n-1 group first K switch An-1 of switch and n group switch, n capacitor C n is charged to n storage battery BATTn or discharge.The above is that an electric weight transfer process is intact.Since n capacitor C n, carry out reverse electric weight conversion with the method for successively decreasing, as stated above up to first capacitor C 1.Be implemented in n storage battery of series connection, automatic balance of voltage relation is consistent the voltage of all storage batterys between electric capacity and the storage battery by utilizing.
Energy transfer principles 5:, can realize the electric weight of n (n 〉=2) batteries of only connecting is transferred in any battery by above-mentioned principle 1,2,3,4.
Fig. 2 is the structural representation of the utility model accumulator electric-quantity carry circuit embodiment two: the field effect transistor in the circuit diagram (MOSFET) combines the switch among Fig. 1 and the function of diode.The field effect transistor (MOSFET) that is connected in the battery terminal negative that voltage is minimum in the battery pack adopts N type field effect transistor (MOSFET), and other all field effect transistor (MOSFET) adopt P type field effect transistor (MOSFET).
Fig. 3 is the structural representation of the utility model accumulator electric-quantity carry circuit embodiment three: the field effect transistor in the circuit diagram (MOSFET) combines the switch among Fig. 1 and the function of diode.All field effect transistor (MOSFET) adopt N type field effect transistor (MOSFET).
Claims (4)
1. accumulator electric-quantity carry circuit, it is characterized in that: comprise batteries and some electric capacity, described batteries is that two above cell batteries are in series, and each cell batteries is in parallel with single electric capacity by control device respectively.
2. according to the described accumulator electric-quantity carry circuit of claim 1, it is characterized in that: described control device is switch and diode in parallel.
3. according to the described accumulator electric-quantity carry circuit of claim 1, it is characterized in that: described control device is a field effect transistor.
4. according to the described accumulator electric-quantity carry circuit of claim 1, it is characterized in that: described cell batteries comprises lead acid accumulator or lithium battery or Ni-MH battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202538463U CN201797333U (en) | 2010-07-02 | 2010-07-02 | Electrical quantity transfer circuit of storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202538463U CN201797333U (en) | 2010-07-02 | 2010-07-02 | Electrical quantity transfer circuit of storage battery |
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| Publication Number | Publication Date |
|---|---|
| CN201797333U true CN201797333U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202538463U Expired - Lifetime CN201797333U (en) | 2010-07-02 | 2010-07-02 | Electrical quantity transfer circuit of storage battery |
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| CN (1) | CN201797333U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138314A (en) * | 2011-11-29 | 2013-06-05 | 东莞钜威新能源有限公司 | Battery power balance circuit and battery system |
| WO2013097070A1 (en) * | 2011-12-26 | 2013-07-04 | 易速达休闲育乐股份有限公司 | Apparatus for parallel connection and protection of batteries of an electric vehicle |
| CN103997070A (en) * | 2013-02-15 | 2014-08-20 | 欧姆龙汽车电子株式会社 | Voltage monitoring apparatus of assembled battery |
-
2010
- 2010-07-02 CN CN2010202538463U patent/CN201797333U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138314A (en) * | 2011-11-29 | 2013-06-05 | 东莞钜威新能源有限公司 | Battery power balance circuit and battery system |
| CN103138314B (en) * | 2011-11-29 | 2016-04-27 | 东莞钜威新能源有限公司 | A kind of battery power balance circuit and battery system |
| WO2013097070A1 (en) * | 2011-12-26 | 2013-07-04 | 易速达休闲育乐股份有限公司 | Apparatus for parallel connection and protection of batteries of an electric vehicle |
| CN103997070A (en) * | 2013-02-15 | 2014-08-20 | 欧姆龙汽车电子株式会社 | Voltage monitoring apparatus of assembled battery |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |
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| CX01 | Expiry of patent term |