CN203086174U - Multi-in-series high-voltage lithium battery pack equalizing device - Google Patents
Multi-in-series high-voltage lithium battery pack equalizing device Download PDFInfo
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- CN203086174U CN203086174U CN 201220690672 CN201220690672U CN203086174U CN 203086174 U CN203086174 U CN 203086174U CN 201220690672 CN201220690672 CN 201220690672 CN 201220690672 U CN201220690672 U CN 201220690672U CN 203086174 U CN203086174 U CN 203086174U
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Abstract
A multiple-in-series high-voltage lithium battery pack equalizing device comprises a plurality of single cells mutually connected in series, and each single cell corresponds to an equalizer circuit; the equalizer circuit comprises an optical coupler isolation switch and a MOS pipe, a fuse and a light emitting diode connected in series are arranged between a drain electrode of the MOS pipe and an anode of the single cell, and a first Zener diode is arranged between an cathode of the single cell and a grid electrode of the MOS pipe; and a second zener diode is arranged between the grid electrode of the MOS pipe and the anode of the single cell. Employing a diode current-limiting resistor and combining positive conductivity of the zener diode to prevent electric leakage caused by damage of the optical coupler isolation switch and the MOS pipe, and the damage is resulted by reversing high voltage generated by wrong wiring order; and the light emitting diode can indicate and distinguish normal equalizing current from leakage current.
Description
Technical field
The utility model relates to lithium battery group balancer, especially a kind of many series connection high pressure lithium battery group balancers.
Background technology
The meaning of lithium ion battery group equilibrium is exactly in order to prolong the useful life of battery pack, if the integrity problem of balancer itself also can cause the power consumption of every joint monomer in the battery pack inconsistent.With regard to passive equilibrium, if just may cause electric leakage, make battery pack do useless discharge and charging process because balancer element itself is destroyed, influence the useful life of battery pack on the contrary.Directly cause this batteries monomer to be discharged into 0V if leakage current is crossed conference, directly cause the battery pack disabler.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of many series connection high pressure lithium battery group balancers, avoid because the wrong line or the order of connection do not take place the phenomenon that causes balancer to burn out, even damage the useful life that also can not cause electric leakage and influence lithium battery.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of many series connection high pressure lithium battery group balancers, the cell that comprises a plurality of mutual series connection, the corresponding equalizing circuit of each cell, described equalizing circuit comprises light-coupled isolation switch and metal-oxide-semiconductor, the positive pole of cell is connected with the positive pole of light-coupled isolation switch and the drain electrode of metal-oxide-semiconductor, the negative pole of cell is connected with the negative pole of light-coupled isolation switch and the source electrode of metal-oxide-semiconductor, and the grid of metal-oxide-semiconductor is connected with the negative pole of light-coupled isolation switch; Be provided with the fuse and the light-emitting diode of connecting between the drain electrode of described metal-oxide-semiconductor and the positive pole of cell, be provided with first voltage stabilizing didoe between the negative pole of described cell and the grid of metal-oxide-semiconductor, the positive pole of first voltage stabilizing didoe is connected with the negative pole of cell; Be provided with second voltage stabilizing didoe between the grid of described metal-oxide-semiconductor and the positive pole of cell, the negative pole of second voltage stabilizing didoe is connected with the positive pole of cell.When if the positive pole of battery pack disconnects with being connected of load, back series connected battery group can produce high pressure, the electric current that high pressure produces can be through first voltage stabilizing didoe and second voltage stabilizing didoe, flow to load then, form the loop of a discharge, thereby avoid high-tension current to flow through metal-oxide-semiconductor and optocoupler burns it; When if the wiring of the equalizing circuit that is connected with cell makes a mistake; might produce high pressure at the positive and negative terminal of equalizing circuit; the high pressure of this part can make second voltage stabilizing didoe, the first voltage stabilizing didoe reverse-conducting; the conducting of voltage triggered metal-oxide-semiconductor appears in the grid of metal-oxide-semiconductor; big electric current forms the loop by fuse and metal-oxide-semiconductor; because the appearance of big electric current, electric current and voltage causes fuse to be fused at last after increasing to the fuse limit, thereby plays the purpose of protective circuit.
As improvement, described light-coupled isolation switch is a high pressure light-coupled isolation switch, and its I/O end is withstand voltage greater than 1.5KV.
As improvement, the blowout current of described fuse is 500mA, and the reverse-conducting voltage of first voltage stabilizing didoe is 5V, and the reverse-conducting voltage of second, third voltage stabilizing didoe is 13V.
As improvement, be provided with current-limiting resistance between described first voltage stabilizing didoe and second voltage stabilizing didoe.
The beneficial effect that the utility model is compared with prior art brought is:
Adopt diode (anti-phase withstand voltage greater than 1.5KV) current-limiting resistance and avoid because the reverse high voltage that order of connection mistake produces destroys the electric leakage that light-coupled isolation switch and metal-oxide-semiconductor cause in conjunction with the voltage-stabiliser tube forward conduction, light-emitting diode can be indicated normal euqalizing current of differentiation or leakage current;
Adopt the 500mA fuse in conjunction with 13V and 5V voltage-stabiliser tube, the protection metal-oxide-semiconductor can not be broken down by high-voltage when the wrong line and cause the generation of leaking electricity.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
The utility model is described in further detail below in conjunction with Figure of description.
As shown in Figure 1, a kind of many series connection high pressure lithium battery group balancers, the cell 6 that comprises a plurality of mutual series connection, each cell 6 corresponding equalizing circuit, described equalizing circuit comprises light-coupled isolation switch 1 and metal-oxide-semiconductor 5, the positive pole of cell 6 is connected with the positive pole of light-coupled isolation switch 1 and the drain electrode of metal-oxide-semiconductor 5, and the negative pole of cell 6 is connected with the negative pole of light-coupled isolation switch 1 and the source electrode of metal-oxide-semiconductor 5, and the grid of metal-oxide-semiconductor 5 is connected with the negative pole of light-coupled isolation switch 1; Be provided with the fuse 8 and the light-emitting diode 4 of connecting between the positive pole of the drain electrode of described metal-oxide-semiconductor 5 and cell 6, the positive pole that is provided with first voltage stabilizing didoe, 3, the first voltage stabilizing didoes 3 between the grid of the negative pole of described cell 6 and metal-oxide-semiconductor 5 is connected with the negative pole of cell 6; The negative pole that is provided with second voltage stabilizing didoe, 2, the second voltage stabilizing didoes 2 between the positive pole of the grid of described metal-oxide-semiconductor 5 and cell 6 is connected with the positive pole of cell 6.Be provided with current-limiting resistance 7 between described first voltage stabilizing didoe 3 and second voltage stabilizing didoe 2.When if the positive pole of cell 6 disconnects with being connected of load, back series connected battery group can produce high pressure, the electric current that high pressure produces can be through first voltage stabilizing didoe 3 and second voltage stabilizing didoe 2, flow to load then, form the loop of a discharge, thereby avoid high-tension current to flow through metal-oxide-semiconductor 5 and optocoupler 1 burns it; When if the wiring of the equalizing circuit that is connected with cell 6 makes a mistake; might produce high pressure at the equalizing circuit two ends of certain cell 6; the high pressure of this part can make second voltage stabilizing didoe 2, first voltage stabilizing didoe, 3 reverse-conductings; 5 conductings of voltage triggered metal-oxide-semiconductor appear in the grid of metal-oxide-semiconductor 5; big electric current forms the loop by fuse 8 and metal-oxide-semiconductor 5; because the appearance of big electric current; electric current and voltage causes fuse 8 to be fused at last after increasing to the fuse limit, thereby plays the purpose of protective circuit.
Present embodiment adopts high pressure light-coupled isolation switch 1, and its I/O end is withstand voltage greater than 1.5KV, as: AQW214EH, isolation control signal and cell 6 electrode voltages.
Present embodiment adopts diode (anti-phase withstand voltage greater than 1.5KV), 200K current-limiting resistance 7 and avoids because the reverse high voltage that order of connection mistake produces destroys the electric leakage that light-coupled isolation switch 1 and metal-oxide-semiconductor 5 cause in conjunction with the voltage-stabiliser tube forward conduction, and light-emitting diode 4 can be indicated normal euqalizing current of differentiation or leakage current.
Present embodiment adopts 500mA fuse 8 in conjunction with 13V and 5V voltage-stabiliser tube, and protection metal-oxide-semiconductor 5 is not can be when the wrong line breakdown to cause the generation of leaking electricity.
Present embodiment adopts the withstand voltage 30V that is not less than of metal-oxide-semiconductor 5(, power is not less than 2W, overcurrent be not less than 10A as: FDS7764A) provide bigger euqalizing current, the utility model patent can be balanced to cell voltage in the required scope more quickly according to the design of the specified euqalizing current of 450mA.Even cooperate voltage-stabiliser tube conducting and 200K resistance current limliting when the wrong line, metal-oxide-semiconductor 5 grids obtain also conducting of cut-in voltage, force fuse 8 to blow, and can avoid high-tension destruction metal-oxide-semiconductor 5 and the generation leaky.
Can open each road equilibrium after the installation and observe light-emitting diode 4 whether can be bright, thereby whether check fuse 8 there be the situation of blowing, and gets rid of the situation that the wrong line is installed.
Claims (4)
1. the high pressure lithium battery group of connecting kind balancer more, the cell that comprises a plurality of mutual series connection, the corresponding equalizing circuit of each cell, described equalizing circuit comprises light-coupled isolation switch and metal-oxide-semiconductor, the positive pole of cell is connected with the positive pole of light-coupled isolation switch and the drain electrode of metal-oxide-semiconductor, the negative pole of cell is connected with the negative pole of light-coupled isolation switch and the source electrode of metal-oxide-semiconductor, and the grid of metal-oxide-semiconductor is connected with the negative pole of light-coupled isolation switch; It is characterized in that: be provided with the fuse and the light-emitting diode of connecting between the drain electrode of described metal-oxide-semiconductor and the positive pole of cell, be provided with first voltage stabilizing didoe between the negative pole of described cell and the grid of metal-oxide-semiconductor, the positive pole of first voltage stabilizing didoe is connected with the negative pole of cell; Be provided with second voltage stabilizing didoe between the grid of described metal-oxide-semiconductor and the positive pole of cell, the negative pole of second voltage stabilizing didoe is connected with the positive pole of cell.
2. a kind of many series connection high pressure lithium battery group balancers according to claim 1, it is characterized in that: described light-coupled isolation switch is a high pressure light-coupled isolation switch, its I/O end is withstand voltage greater than 1.5KV.
3. a kind of many series connection high pressure lithium battery group balancers according to claim 1, it is characterized in that: the blowout current of described fuse is 500mA, the reverse-conducting voltage of first voltage stabilizing didoe is 5V, and the reverse-conducting voltage of second voltage stabilizing didoe is 13V.
4. a kind of many series connection high pressure lithium battery group balancers according to claim 1 is characterized in that: be provided with current-limiting resistance between described first voltage stabilizing didoe and second voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690672 CN203086174U (en) | 2012-12-13 | 2012-12-13 | Multi-in-series high-voltage lithium battery pack equalizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690672 CN203086174U (en) | 2012-12-13 | 2012-12-13 | Multi-in-series high-voltage lithium battery pack equalizing device |
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| CN203086174U true CN203086174U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220690672 Expired - Fee Related CN203086174U (en) | 2012-12-13 | 2012-12-13 | Multi-in-series high-voltage lithium battery pack equalizing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730935A (en) * | 2013-12-30 | 2014-04-16 | 广东志成冠军集团有限公司 | Equalization circuit for allowing electric energy of lithium batteries to be uniform |
| CN103795123A (en) * | 2014-02-19 | 2014-05-14 | 成都芝田高分子材料有限公司 | Intelligent battery management system based on supercapacitor active equalization |
| CN105914112A (en) * | 2016-06-06 | 2016-08-31 | 易事特集团股份有限公司 | Method of manufacturing multichannel parallel current sharing circuits, the multichannel parallel current sharing circuits, solar charge and discharge controller and photovoltaic system |
| CN106080252A (en) * | 2016-08-09 | 2016-11-09 | 金龙联合汽车工业（苏州）有限公司 | A kind of batteries of electric automobile group equalization methods |
| CN106922052A (en) * | 2017-03-22 | 2017-07-04 | 中山品上照明有限公司 | The LED control device that a kind of compatible voltage light modulation is dimmed with PWM |
-
2012
- 2012-12-13 CN CN 201220690672 patent/CN203086174U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730935A (en) * | 2013-12-30 | 2014-04-16 | 广东志成冠军集团有限公司 | Equalization circuit for allowing electric energy of lithium batteries to be uniform |
| CN103730935B (en) * | 2013-12-30 | 2016-04-27 | 广东志成冠军集团有限公司 | A kind ofly realize the consistent equalizing circuit of lithium battery electric energy |
| CN103795123A (en) * | 2014-02-19 | 2014-05-14 | 成都芝田高分子材料有限公司 | Intelligent battery management system based on supercapacitor active equalization |
| CN105914112A (en) * | 2016-06-06 | 2016-08-31 | 易事特集团股份有限公司 | Method of manufacturing multichannel parallel current sharing circuits, the multichannel parallel current sharing circuits, solar charge and discharge controller and photovoltaic system |
| CN106080252A (en) * | 2016-08-09 | 2016-11-09 | 金龙联合汽车工业（苏州）有限公司 | A kind of batteries of electric automobile group equalization methods |
| CN106922052A (en) * | 2017-03-22 | 2017-07-04 | 中山品上照明有限公司 | The LED control device that a kind of compatible voltage light modulation is dimmed with PWM |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20161213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |