CN205160157U - Aircraft battery equalizer circuit - Google Patents
Aircraft battery equalizer circuit Download PDFInfo
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- CN205160157U CN205160157U CN201520998491.3U CN201520998491U CN205160157U CN 205160157 U CN205160157 U CN 205160157U CN 201520998491 U CN201520998491 U CN 201520998491U CN 205160157 U CN205160157 U CN 205160157U
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Abstract
The utility model provides an aircraft battery equalizer circuit, includes MCU microprocessor, battery cell voltage observation circuit and battery cell equalizer circuit, battery cell voltage observation circuit contains battery cell voltage acquisition circuit and data transmission circuit, and each battery cell voltage of aircraft battery after the battery cell voltage acquisition circuit sampling and converting data signal to, transmits for MCU microprocessor through data transmission circuit, battery cell equalizer circuit contains electronic switch and discharge resistance, each battery cell of aircraft battery to ally oneself with and connect electronic switch and the discharge resistance who establishes ties after connecting, MCU microprocessor, according to the battery cell voltage sample data signal of input and handle, output control signal to this battery cell equalizer circuit's electronic switch controls this electronic switch's break -make. The utility model discloses can carry out automated inspection and equilibrium to battery cell, need not artifical the participation.
Description
Technical field
The utility model relates to aircraft battery discharge and recharge technology, particularly a kind of aircraft battery equalizing circuit.
Background technology
Aircraft battery is the important record equipment of space shuttle, powers as accessory power supply or emergency power supply when aircraft main power source does not work or breaks down to important power consumption equipment; At some in particular cases, as in power free field, also aircraft some small-power power consumption equipment preflight check power supply or startup power supply can be used as.Aircraft battery, compared with general industry storage battery, the pole plate of aircraft storage battery compared with thin, density of electrolyte is large, larger active material usage factor and less internal resistance can be ensured, thus lightweight, size is little, starting performance is good, but the life-span is shorter, is generally only 1/5 to 1/10 of conventional accumulators.
Aircraft battery is in series by multiple cell, and the voltage of cell is generally at about 1.5V.Due to the reason such as cell self manufacture craft of storage battery, between different monomers battery, such as density of electrolyte, electrode equivalent resistance etc., all there is difference, these differences cause the capacity of each cell of storage battery different, storage battery can cause monomer battery voltage unbalanced when discharge and recharge, the unbalanced meeting of long-term monomer battery voltage causes the reduction of battery capacity and the minimizing in useful life.
Current most of aircraft battery charging technique does not detect cell and equilibrium automatically, many employing manual measurements and equalization discharge, and the accuracy of equalization is poor, and operation is very inconvenient, and cost of labor is high.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art exactly, provides a kind of aircraft battery equalizing circuit, automatically can detect and equilibrium, without the need to artificial participation to cell.
For achieving the above object, a kind of aircraft battery equalizing circuit of the utility model, comprises MCU microprocessor, monomer battery voltage observation circuit and cell equalizing circuit;
Monomer battery voltage observation circuit, comprise monomer battery voltage Acquisition Circuit and data transmission circuit, each monomer battery voltage of aircraft battery, is sampled by monomer battery voltage Acquisition Circuit and after converting digital signal to, is transferred to MCU microprocessor through data transmission circuit;
Cell equalizing circuit, comprises electronic switch and discharge resistance, and each cell of aircraft battery, is connected in parallel the electronic switch after being connected in series and discharge resistance;
MCU microprocessor, monomer battery voltage sampled digital signal according to input is gone forward side by side row relax, output control signals to the electronic switch of this cell equalizing circuit, control the break-make of this electronic switch, when electronic switch conducting, cell equalization discharge, when electronic switch disconnects, cell stops balanced.
In one embodiment, described data transmission circuit comprises isoSPI bus and communications protocol conversion chip, the digital signal that described monomer battery voltage Acquisition Circuit exports, through isoSPI communication, transfer to communications protocol conversion chip and convert SPI communication to, input MCU microprocessor.
Described monomer battery voltage Acquisition Circuit the best adopts special cell ADC modulus conversion chip.
Described cell equalizing circuit, also can comprise drive circuit, the control signal that described MCU microprocessor exports, through drive circuit to electronic switch.Cell equalizing circuit is driven being switched on or switched off of electronic switch by drive circuit, and after electronic switch is connected, cell puts too much energy by discharge resistance, carries out equilibrium.
Described drive circuit can adopt triode.
Described electronic switch can adopt relay.
The utility model carries out real-time high-precision sampling by monomer battery voltage observation circuit to monomer battery voltage, convert the analog voltage signal of cell to digital signal and transfer to MCU microprocessor, MCU microprocessor processes judgement online, by cell equalizing circuit, unbalanced cell is discharged, finally realize the balanced consistent object of aircraft battery all monomer battery voltages during discharge and recharge.
Visible, by the utility model, realize the Real-Time Monitoring of aircraft battery monomer battery voltage in discharge and recharge with balanced.
Accompanying drawing explanation
Fig. 1 is circuit block diagram;
Fig. 2 is embodiment circuit theory diagrams;
Fig. 3 is the equalizing circuit partial enlarged drawing of a cell in Fig. 2;
Fig. 4 is automatic equalization partial process view;
Fig. 5 be before monomer battery voltage equilibrium and balanced after contrast table.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described in detail.
As shown in Figure 1, aircraft battery is in series by multiple cell, and a kind of aircraft battery equalizing circuit of the utility model, comprises MCU microprocessor, monomer battery voltage observation circuit and cell equalizing circuit;
Monomer battery voltage observation circuit, comprise monomer battery voltage Acquisition Circuit and data transmission circuit, each monomer battery voltage of aircraft battery, is sampled by monomer battery voltage Acquisition Circuit and after converting digital signal to, is transferred to MCU microprocessor through data transmission circuit;
Cell equalizing circuit, comprises electronic switch and discharge resistance, and each cell of aircraft battery, is connected in parallel the electronic switch after being connected in series and discharge resistance;
MCU microprocessor, monomer battery voltage sampled digital signal according to input is gone forward side by side row relax, output control signals to the electronic switch of this cell equalizing circuit, control the break-make of this electronic switch, when electronic switch conducting, cell equalization discharge, when electronic switch disconnects, cell stops balanced.
As shown in Figure 2, aircraft battery is in series by 20 cell E1 to E20, monomer battery voltage Acquisition Circuit adopts two pieces of special cell ADC modulus conversion chip ADC1, ADC2, data transmission circuit comprises isoSPI bus and communications protocol conversion chip U, the digital signal that special chip ADC1, ADC2 export, through isoSPI communication, transfer to communications protocol conversion chip U and convert SPI communication to, input MCU microprocessor.20 cell E1 to E20, each monomer battery voltage, sampling with high precision is carried out by special cell ADC modulus conversion chip, MCU microprocessor reads the sampled data of special chip ADC1, ADC2 by data transmission circuit, monomer battery voltage sampled data is carried out reception and resolves and judge to process; As shown in Figure 3, cell equalizing circuit comprises drive circuit, electronic switch and discharge resistance R, drive circuit adopts triode T, electronic switch adopts relay K, the normally opened contact discharged in series resistance R of relay K, then is connected in parallel on the two ends of cell E, the control signal that MCU microprocessor exports, drive coil electricity or the power-off of relay K through triode T, the normally opened contact of control relay K closes or disconnects then, thus whether control cell discharges.As shown in Figure 4, MCU microprocessor is according to monomer battery voltage sampled data, real-time online Logic judgment is carried out to monomer battery voltage, if it is unbalanced to monitor current monolithic battery, then perform corresponding cell and start balanced instruction, if cell is at equilibrium, or cell is balanced, then perform and stop balanced instruction.As shown in Figure 3, start balanced, the normally opened contact being exactly control relay K closes, and cell E is discharged by discharge resistance R, cell E voltage drop.Otherwise stop balanced, the normally opened contact being exactly control relay K disconnects, and cell E stops being discharged by discharge resistance R.
As shown in Figure 5, for 20 joint cells, before monomer battery voltage equilibrium with balanced after monitoring form, be intended to illustrate balanced front and balanced after the equilibrium degree of monomer battery voltage.From monitoring form, after equilibrium, monomer battery voltage is basically identical, reaches balanced object.
Claims (6)
1. an aircraft battery equalizing circuit, is characterized in that: comprise MCU microprocessor, monomer battery voltage observation circuit and cell equalizing circuit;
Monomer battery voltage observation circuit, comprise monomer battery voltage Acquisition Circuit and data transmission circuit, each monomer battery voltage of aircraft battery, is sampled by monomer battery voltage Acquisition Circuit and after converting digital signal to, is transferred to MCU microprocessor through data transmission circuit;
Cell equalizing circuit, comprises electronic switch and discharge resistance, and each cell of aircraft battery, is connected in parallel the electronic switch after being connected in series and discharge resistance;
MCU microprocessor, monomer battery voltage sampled digital signal according to input is gone forward side by side row relax, output control signals to the electronic switch of this cell equalizing circuit, control the break-make of this electronic switch, when electronic switch conducting, cell equalization discharge, when electronic switch disconnects, cell stops balanced.
2. equalizing circuit according to claim 1, it is characterized in that, described data transmission circuit comprises isoSPI bus and communications protocol conversion chip, the digital signal that described monomer battery voltage Acquisition Circuit exports, through isoSPI communication, transfer to communications protocol conversion chip and convert SPI communication to, input MCU microprocessor.
3. equalizing circuit according to claim 1, is characterized in that, described monomer battery voltage Acquisition Circuit adopts special cell ADC modulus conversion chip.
4. equalizing circuit according to claim 1, is characterized in that, described cell equalizing circuit, also comprises drive circuit, the control signal that described MCU microprocessor exports, through drive circuit to electronic switch.
5. equalizing circuit according to claim 4, is characterized in that, described drive circuit adopts triode.
6. equalizing circuit according to claim 4, is characterized in that, described electronic switch adopts relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520998491.3U CN205160157U (en) | 2015-12-03 | 2015-12-03 | Aircraft battery equalizer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520998491.3U CN205160157U (en) | 2015-12-03 | 2015-12-03 | Aircraft battery equalizer circuit |
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| Publication Number | Publication Date |
|---|---|
| CN205160157U true CN205160157U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520998491.3U Active CN205160157U (en) | 2015-12-03 | 2015-12-03 | Aircraft battery equalizer circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786944A (en) * | 2016-12-31 | 2017-05-31 | 华为技术有限公司 | A kind of sample circuit of series battery cell, equalizing circuit and system |
| CN107492916A (en) * | 2016-07-14 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Battery equalization method and device |
| CN112104034A (en) * | 2020-09-14 | 2020-12-18 | 北京理工大学 | Non-contact power battery charging, heating and balancing device |
-
2015
- 2015-12-03 CN CN201520998491.3U patent/CN205160157U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492916A (en) * | 2016-07-14 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Battery equalization method and device |
| CN106786944A (en) * | 2016-12-31 | 2017-05-31 | 华为技术有限公司 | A kind of sample circuit of series battery cell, equalizing circuit and system |
| WO2018120903A1 (en) * | 2016-12-31 | 2018-07-05 | 华为技术有限公司 | Sampling circuit, equalizing circuit, and system of single batteries of serial battery pack |
| EP3553874A4 (en) * | 2016-12-31 | 2020-07-08 | Huawei Technologies Co., Ltd. | Sampling circuit, equalizing circuit, and system of single batteries of serial battery pack |
| US11041911B2 (en) | 2016-12-31 | 2021-06-22 | Huawei Technologies Co., Ltd. | Sampling circuit, equalization circuit, and system for single cell in series battery pack |
| CN112104034A (en) * | 2020-09-14 | 2020-12-18 | 北京理工大学 | Non-contact power battery charging, heating and balancing device |
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