CN202817797U - A battery equalizer capable of transferring electric energy - Google Patents
A battery equalizer capable of transferring electric energy Download PDFInfo
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- CN202817797U CN202817797U CN 201220153997 CN201220153997U CN202817797U CN 202817797 U CN202817797 U CN 202817797U CN 201220153997 CN201220153997 CN 201220153997 CN 201220153997 U CN201220153997 U CN 201220153997U CN 202817797 U CN202817797 U CN 202817797U
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Abstract
Provided is a battery equalizer capable of transferring electric energy. The battery equalizer comprises functional circuits of a voltage difference detecting and controlling circuit, a square wave generating and driving circuit, an executing circuit, and an equalization indicating circuit. Main energy transducer devices include an inductor L24, field effect transistors Q22 and Q23, and diodes D18 and D19. The voltage difference between adjacent batteries B25 and B26 is detected in real time and the equalization indicating circuit is activated or inactivated according to the voltage difference conditions. Electric energy of a battery with high voltage is transferred to a battery with low voltage in order to increase electric energy and voltage of the battery with low voltage until the voltages of the two batteries are equal or similar. The battery equalizer, which increases utilization of electrical energy, operates in all stages of the battery and prolongs service life of the battery, the all stages including charging, discharging, restoring, and static stages. The battery equalizer is just equipped with three wiring terminals and has characteristics of a simple structure, high equalizing efficiency, practicality, and energy conservation. Cascade connection between the equalizers is used when great number batteries are used and the number of batteries connected in series is not limited. The battery equalizer is also suitable for super capacitor groups connected in series.
Description
Technical field
The utility model relates to a kind of device that each cell of battery pack is carried out the electric energy equilibrium, and especially the battery with different voltages carries out electric energy transfer and equilibrium in the low-loss mode, reaches the basically identical battery equalizer of all cell electric energy.
Background technology
At present, there is following deficiency in known battery equalizer: the one, and to consume unnecessary electric energy as main, the unnecessary electric energy of battery that voltage is high converts thermal release to and falls, and to reach the balance of voltage, is unfavorable for energy-conservation and environmental protection between equalizer; The 2nd, although realized electric energy transfer, circuit structure is complicated or because adopting application-specific integrated circuit (ASIC) such as single-chip microcomputer to make cost higher; The 3rd, take the programmable hardware centralized control, use unified interface and stube cable to control respectively, cost is higher.
Summary of the invention
The purpose of this utility model is to avoid the deficiency of above-mentioned known technology, provide a kind of adopt universal integrated circuit as core devices, can automatically carry out balanced control, make each monomer battery voltage and electric energy reach unanimity, only have the electric energy transfer formula battery equalizer of 3 terminals according to the poor size of series battery monomer battery voltage.
The purpose of this utility model reaches by the following technical programs: the utility model detects control circuit, square wave generation and four parts such as drive circuit, executive circuit and balanced indicating circuit by voltage differences and forms.Wherein U13 is 555 time-base integrated circuits (hereinafter to be referred as time-base circuits), and U14～U15 is integrated voltage comparator (hereinafter to be referred as comparator), and U16～U17 is bidirectional analog switch integrated circuit (hereinafter to be referred as switch).Voltage differences detects control circuit and is comprised of resistance R 5～R8, comparator U14, U15, and the end of resistance R 5, R7, R8 is connected with the positive pole of battery B25, and the other end of resistance R 5 is connected with an end of resistance R 6 and the in-phase input end of comparator U14, U15; The other end of resistance R 6 be connected publicly; The reverse input end of comparator U14 is connected with the positive pole of battery B26, the output of comparator U14 is connected with the other end of resistance R 7, the reverse input end of comparator U15 and the control end C of switch U16, and the output of comparator U15 is connected with the other end of resistance R 8 and the control end C of switch U17; Square wave occurs to be comprised of time-base circuit U13, resistance R 1～R4, capacitor C 12 with drive circuit, and pin 4, the pin 8 of time-base circuit U13 is connected with resistance R, the end of R3 is connected with the positive pole of battery B25; The end that the other end of resistance R 3 is connected with resistance R is connected with the pin 7 of time-base circuit U13; The end that the other end of resistance R 4 is connected with capacitor C is connected with the pin 2 of time-base circuit U13, pin 6; The other end that the pin 5 of time-base circuit U13 is connected with resistance R is connected with an end of resistance R 2; The pin 1 of the other end of capacitor C 12 and resistance R 2 and time-base circuit U13 be connected publicly; The pin 3 of time-base circuit U13 is connected with the input X of switch U16, U17; Executive circuit is comprised of switch U16, U17, resistance R 9, R10, diode D18, D19, field effect transistor Q22, Q23 and inductance L 24, and the output Y of switch U16, U17 is connected with the end of resistance R 9, R10 and the grid of field effect transistor Q22, Q23 respectively; The drain electrode of field effect transistor Q22, Q23 and the anode of diode D18 are connected an end of negative electrode and inductance L 24 and are connected with diode D19; The other end of resistance R 9 is connected the negative electrode of source electrode and diode D18 and is connected with the positive pole of battery B25 with field effect transistor Q22; The other end of resistance R 10 be connected with field effect transistor Q23 drain electrode and diode D19 anode be connected publicly; The other end of inductance L 24 is connected with the positive pole of battery B26; The negative pole of battery B25 is connected with the positive pole of battery B26; Balanced indicating circuit is comprised of resistance R 11 and light-emitting diode D20, D21, one end of resistance R 11 and the anode of light-emitting diode D20 are connected negative electrode and are connected with light-emitting diode D21, the other end of resistance R 11 is connected with the positive pole of battery B26, and the negative electrode of light-emitting diode D20 is connected anode and is connected with the drain electrode of field effect transistor Q22 with light-emitting diode D21; Comparator U14, U15 can use integrated operational amplifier in the situation of removing resistance R 7, R8, field effect transistor Q22 is the P-channel field-effect transistor (PEFT) pipe, and field effect transistor Q23 is N channel field-effect pipe.
The utility model only has 3 terminals, respectively with the positive pole of series battery, negative pole and battery series connection joint connect, if the voltage of battery B25 is higher than battery B26, comparator U14 exports high level, comparator U15 output low level, switch U16 is closed, switch U17 opens, square wave occurs constantly to export the square wave with certain frequency and power with drive circuit, negative half-cycle at square wave, field effect transistor Q22 conducting, the unnecessary electric weight among the battery B25 charges to inductance L 24 through field effect transistor Q22, at the positive half period of square wave, field effect transistor Q22 cut-off, because the characteristic of inductance, the electric current in the inductance L 24 can not suddenly disappear, but through battery B26, diode D19 continues to flow, the electric energy that is temporarily stored in the inductance L 24 is filled among the battery B26, improve the voltage of battery B26, realized the transfer of electric energy from battery B25 to battery B26, until till the voltage of battery B25 and battery B26 equates; On the contrary, if the voltage of battery B26 is higher than battery B25, comparator U14 output low level then, comparator U15 exports high level, switch U16 opens, switch U17 is closed, at the positive half period of square wave, and field effect transistor Q23 conducting, unnecessary electric energy among the battery B26 charges to inductance L 24 through field effect transistor Q23, at the negative half-cycle of square wave, field effect transistor Q23 cut-off, the electric current in the inductance L 24 is through diode D18, battery B25 continues to flow, the electric energy that is temporarily stored in the inductance L 24 is filled among the battery B25, improve the voltage of battery B25, realized the transfer of electric energy from battery B26 to battery B25, until till the voltage of battery B26 and battery B25 equates.
Balanced indicating circuit is comprised of resistance R 11, light-emitting diode D20, D21, carries out battery balanced indication.
The utlity model has following features, no matter which state battery is in, and equalizer is all worked, and comprises charging, discharge, static and return to form, the size of euqalizing current is relevant with the voltage difference of adjacent cell, voltage difference is large, and euqalizing current is large, and electric energy transfer speed is fast, voltage difference is little, euqalizing current is little, and electric energy transfer speed is little, has very strong adaptability; The brightness of light-emitting diode changes can reflect the size of battery pressure reduction or the size of euqalizing current, and battery pressure reduction is large, and euqalizing current is larger, electric energy transfer speed is fast, and the brightness of light-emitting diode is high, otherwise, battery pressure reduction is little, and euqalizing current is little, and electric energy transfer speed is little, the brightness of light-emitting diode is dark, after battery was finished equilibrium, static working current was very little, only was a milliampere level, for the battery pack of frequent use, need not to add switch; Used electronic devices and components are the ordinary electronic components and parts, and simple circuit is practical; Only have 3 connecting lines, install, use and manage very convenient.
Description of drawings
Accompanying drawing is electrical block diagram of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing:
R1 among the figure～R11 resistance, C12 electric capacity, U13 time-base circuit, U14～U15 comparator, U16～U17 switch, D18～D19 diode, D20～D21 light-emitting diode, Q22～Q23 field effect transistor, L24 inductance, B25～B26 battery.
Embodiment
Voltage differences detects control circuit and is comprised of resistance R 5～R8, comparator U14, U15, and the end of resistance R 5, R7, R8 is connected with the positive pole of battery B25, and the other end of resistance R 5 is connected with an end of resistance R 6 and the in-phase input end of comparator U14, U15; The other end of resistance R 6 be connected publicly; The reverse input end of comparator U14 is connected with the positive pole of battery B26, the output of comparator U14 is connected with the other end of resistance R 7, the reverse input end of comparator U15 and the control end C of switch U16, the output of comparator U15 is connected with the other end of resistance R 8 and the control end C of switch U17, this functional circuit is used for detecting in real time battery B25, B26 voltage, and by comparator U14, U15 output control signal.
Square wave occurs to be comprised of time-base circuit U13, resistance R 1～R4, capacitor C 12 with drive circuit, and pin 4, the pin 8 of time-base circuit U13 is connected with resistance R, the end of R3 is connected with the positive pole of battery B25; The end that the other end of resistance R 3 is connected with resistance R is connected with the pin 7 of time-base circuit U13; The end that the other end of resistance R 4 is connected with capacitor C is connected with the pin 2 of time-base circuit U13, pin 6; The other end that the pin 5 of time-base circuit U13 is connected with resistance R is connected with an end of resistance R 2; The pin 1 of the other end of capacitor C 12 and resistance R 2 and time-base circuit U13 be connected publicly; The pin 3 of time-base circuit U13 is connected with the input X of switch U16, U17, and the output signal of this functional circuit provides driving voltage for field effect transistor Q22, Q23.
Executive circuit is comprised of switch U16, U17, resistance R 9, R10, diode D18, D19, field effect transistor Q22, Q23 and inductance L 24, and the output Y of switch U16, U17 is connected with the end of resistance R 9, R10 and the grid of field effect transistor Q22, Q23 respectively; The drain electrode of field effect transistor Q22, Q23 and the anode of diode D18 are connected an end of negative electrode and inductance L 24 and are connected with diode D19; The other end of resistance R 9 is connected the negative electrode of source electrode and diode D18 and is connected with the positive pole of battery B25 with field effect transistor Q22; The other end of resistance R 10 be connected with field effect transistor Q23 drain electrode and diode D19 anode be connected publicly; The other end of inductance L 24 is connected with the positive pole of battery B26; The negative pole of battery B25 is connected with the positive pole of battery B26, and this functional circuit is used for carrying out electric energy transfer between battery B25, the B26, and the part electric energy transfer in the battery that voltage is high improves electric energy and the voltage of low-voltage battery in the low battery of voltage.
Balanced indicating circuit is comprised of resistance R 11 and light-emitting diode D20, D21, one end of resistance R 11 and the anode of light-emitting diode D20 are connected negative electrode and are connected with light-emitting diode D21, the other end of resistance R 11 is connected with the positive pole of battery B26, the negative electrode of light-emitting diode D20 is connected anode and is connected with the drain electrode of field effect transistor Q22 with light-emitting diode D21, this functional circuit is used for carrying out between battery B25, the B26 electric energy transfer indication.
Claims (4)
1. electric energy transfer formula battery equalizer is characterized in that:
(1), voltage differences detection control circuit is comprised of resistance R 5～R8, comparator U14, U15, the end of resistance R 5, R7, R8 is connected with the positive pole of battery B25, and the other end of resistance R 5 is connected with an end of resistance R 6 and the in-phase input end of comparator U14, U15; The other end of resistance R 6 be connected publicly; The reverse input end of comparator U14 is connected with the positive pole of battery B26, the output of comparator U14 is connected with the other end of resistance R 7, the reverse input end of comparator U15 and the control end C of switch U16, and the output of comparator U15 is connected with the other end of resistance R 8 and the control end C of switch U17;
(2), square wave occurs is comprised of time-base circuit U13, resistance R 1～R4, capacitor C 12 with drive circuit, pin 4, the pin 8 of time-base circuit U13 is connected with resistance R, the end of R3 is connected with the positive pole of battery B25; The end that the other end of resistance R 3 is connected with resistance R is connected with the pin 7 of time-base circuit U13; The end that the other end of resistance R 4 is connected with capacitor C is connected with the pin 2 of time-base circuit U13, pin 6; The other end that the pin 5 of time-base circuit U13 is connected with resistance R is connected with an end of resistance R 2; The pin 1 of the other end of capacitor C 12 and resistance R 2 and time-base circuit U13 be connected publicly; The pin 3 of time-base circuit U13 is connected with the input X of switch U16, U17;
(3), executive circuit is comprised of switch U16, U17, resistance R 9, R10, diode D18, D19, field effect transistor Q22, Q23 and inductance L 24, the output Y of switch U16, U17 is connected with the end of resistance R 9, R10 and the grid of field effect transistor Q22, Q23 respectively; The drain electrode of field effect transistor Q22, Q23 and the anode of diode D18 are connected an end of negative electrode and inductance L 24 and are connected with diode D19; The other end of resistance R 9 is connected the negative electrode of source electrode and diode D18 and is connected with the positive pole of battery B25 with field effect transistor Q22; The other end of resistance R 10 be connected with field effect transistor Q23 drain electrode and diode D19 anode be connected publicly; The other end of inductance L 24 is connected with the positive pole of battery B26; The negative pole of battery B25 is connected with the positive pole of battery B26;
(4), balanced indicating circuit is comprised of resistance R 11 and light-emitting diode D20, D21, one end of resistance R 11 and the anode of light-emitting diode D20 are connected negative electrode and are connected with light-emitting diode D21, the other end of resistance R 11 is connected with the positive pole of battery B26, and the negative electrode of light-emitting diode D20 is connected anode and is connected with the drain electrode of field effect transistor Q22 with light-emitting diode D21.
2. electric energy transfer formula battery equalizer according to claim 1 is characterized in that: switch U16, U17 employing bidirectional analog switch integrated circuit.
3. electric energy transfer formula battery equalizer according to claim 1, it is characterized in that: comparator U14, U15 can use integrated operational amplifier in the situation of removing resistance R 7, R8.
4. electric energy transfer formula battery equalizer according to claim 1 is characterized in that: field effect transistor Q22 use P-channel field-effect transistor (PEFT) pipe, field effect transistor Q23 use N channel field-effect pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153997 CN202817797U (en) | 2012-04-02 | 2012-04-02 | A battery equalizer capable of transferring electric energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153997 CN202817797U (en) | 2012-04-02 | 2012-04-02 | A battery equalizer capable of transferring electric energy |
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| Publication Number | Publication Date |
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| CN202817797U true CN202817797U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220153997 Expired - Fee Related CN202817797U (en) | 2012-04-02 | 2012-04-02 | A battery equalizer capable of transferring electric energy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516030A (en) * | 2013-10-21 | 2014-01-15 | 南车株洲电力机车有限公司 | Voltage equalizing device and method |
| CN110417091A (en) * | 2019-08-05 | 2019-11-05 | 无锡旭康微电子有限公司 | A kind of voltage balance of battery device, voltage balance of battery device and its control method |
-
2012
- 2012-04-02 CN CN 201220153997 patent/CN202817797U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516030A (en) * | 2013-10-21 | 2014-01-15 | 南车株洲电力机车有限公司 | Voltage equalizing device and method |
| CN103516030B (en) * | 2013-10-21 | 2017-01-25 | 南车株洲电力机车有限公司 | Voltage equalizing device and method |
| CN110417091A (en) * | 2019-08-05 | 2019-11-05 | 无锡旭康微电子有限公司 | A kind of voltage balance of battery device, voltage balance of battery device and its control method |
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| GR01 | Patent grant | ||
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| DD01 | Delivery of document by public notice |
Addressee: Zhou Baolin Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
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Addressee: Zhou Baolin Document name: Notice of termination of patent |
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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: 20130320 Termination date: 20200402 |