CN104578257A - High-voltage and high-power power supply - Google Patents
High-voltage and high-power power supply Download PDFInfo
- Publication number
- CN104578257A CN104578257A CN201410791816.0A CN201410791816A CN104578257A CN 104578257 A CN104578257 A CN 104578257A CN 201410791816 A CN201410791816 A CN 201410791816A CN 104578257 A CN104578257 A CN 104578257A
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- Prior art keywords
- energy storage
- voltage
- low
- power
- battery pile
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Links
- 238000004146 energy storage Methods 0.000 claims abstract description 86
- 230000005669 field effect Effects 0.000 claims description 31
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 2
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims description 2
- 238000007726 management method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- H02J2007/0067—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a high-voltage and high-power power supply. The high-voltage and high-power power supply comprises a low-voltage and high-current cell stack, N energy storage microunits connected with a power output port, and an energy management unit connected between the low-voltage and high-current cell stack and the N energy storage microunits, wherein N is greater than or equal to 2. Through an electronic switch tube and the energy storage microunits, an aim of converting the low-voltage and high-current cell stack supply into a high-voltage and high-power battery supply is achieved and the problem that single batteries are serially connected to meet a requirement of a load on battery voltage is solved.
Description
Technical field
The present invention relates to battery supply field, specifically a kind of high-power electrical source of power.
Background technology
Motor selected by motor vehicle is generally high-voltage motor, and for adapting to motor to the needs of voltage, electrokinetic cell system will provide the high voltage source adapted.At present this high voltage source realizes by the series connection of battery, battery pack has dozens or even hundreds of cell to be composed in series, series-connected cell combinations many so usually brings that the system failure is many, hydraulic performance decline, even if there is the battery management system of better performance (BMS) be often also difficult to the overall performance of safeguards system and normally run.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high-power electrical source of power, solves by being connected in series each cell and meets the problem of load to cell voltage needs.
Technical scheme of the present invention is:
A kind of high-power electrical source of power, include N number of energy storage micro unit that low-voltage, high-current battery pile is connected with output port of power source, be connected to energy management unit between low-voltage, high-current battery pile and N number of energy storage micro unit, wherein, N is more than or equal to 2; Described energy management unit include be connected with low-voltage, high-current battery pile energy distribution unit, output control unit, a N+1 electronic switch and control centre, described energy distribution unit is all connected with control centre with output control unit; The positive pole of N+1 electronic switch is all connected with the output port of energy distribution unit, and the control of N+1 electronic switch is extremely all connected with output control unit, and the negative pole of N number of electronic switch is all connected with the energy storage input port of N number of energy storage micro unit; Described energy storage micro unit comprises energy storage and exports high level port, energy storage input port and energy storage output low level port, in two adjacent energy storage micro units, the energy storage of the energy storage micro unit that the output low level port of the energy storage micro unit that level is high is low with level exports high level port and is connected, the energy storage of the energy storage micro unit at top exports high level port and is connected with output port of power source positive pole, and the energy storage output low level port of end energy storage micro unit is connected with output port of power source negative pole.
Described energy distribution unit is made up of reversal bridge, two power source buss and the reversal bridge driver element that is connected with control centre, described reversal bridge includes four MOSFET field effect transistor, the grid of four MOSFET field effect transistor is all connected with reversal bridge driver element, MOSFET field effect transistor MQ1 is all connected with the positive pole of low-voltage, high-current battery pile with the positive pole of MOSFET field effect transistor MQ2, MOSFET field effect transistor MQ3 is all connected with the negative pole of low-voltage, high-current battery pile with the negative pole of MOSFET field effect transistor MQ4, the negative pole of MOSFET field effect transistor MQ1 and the positive pole of MOSFET field effect transistor MQ3 are all connected with a wherein power source bus, the negative pole of MOSFET field effect transistor MQ2 is all connected with another root power source bus with the positive pole of MOSFET field effect transistor MQ4, the positive pole of even number electronic switch is all connected with a wherein power source bus, the positive pole of odd electron switch is all connected with another root power source bus.
Described electronic switch be one-way conduction electronic switch or by the electronic switch that can not oppositely end through combination after is formed the electronic switch that can oppositely end combination.
Described energy storage micro unit selects the combination of electric capacity or inductance and electric capacity or micro-energy secondary battery or above-mentioned combining structure.
Described low-voltage, high-current battery pile is lithium ion battery pile, Ni-MH battery pile, lead-acid battery pile or fuel cell pile.
Multiple monocell is comprised in described low-voltage, high-current battery pile, multiple cell parallel connection is connected or parallel connection after the series connection of several cell again, when multiple low-voltage, high-current battery pile combination, the parallel wire in the low-voltage, high-current battery pile of its correspondence also docks one by one.
Advantage of the present invention:
(1), electronic switching tube of the present invention and energy storage micro unit achieve low-voltage, high-current battery pile power conversion is the object of high-power battery supply, solve by being connected in series each cell and meet the problem of load to cell voltage needs;
(2), the battery pile that is composed in series again of multiple cell parallel connection, greatly alleviate the problem that the problem of inconsistency of battery, particularly performance of lithium ion battery are inconsistent, make battery operated more reliable, the life-span is longer, fail safe is higher;
(3), energy storage micro unit of the present invention is made up of electric capacity (conventional capacitive or super capacitor), and the depth of discharge of electric capacity can reach 100% in theory, discharge-rate can reach infinitely great in theory, so the power supply dynamic characteristic of a kind of high-power electrical source of power scheme of the present invention shows as capacitance characteristic at short notice, greatly improve the discharge performance of battery pile;
(4), structure of the present invention is simple, reliability is high, cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of the embodiment of the present invention.
Fig. 3 is the control program principle process block diagram of the embodiment of the present invention.
Fig. 4 is the structural principle schematic diagram that in low-voltage, high-current battery pile, multiple cell parallel connection is connected again.
Fig. 5 is the structural principle schematic diagram of the wherein rear parallel connection of several cell series connection in low-voltage, high-current battery pile.
Fig. 6 is the structural representation of a kind of implementation of energy storage micro unit of the present invention.
Fig. 7 is the structural representation of the electronic switch of one-way conduction of the present invention.
Fig. 8 is the structural representation of the combination electronic switch that the present invention forms with two N-type MOSFET pipes.
Embodiment
See Fig. 1, a kind of high-power electrical source of power, include N number of energy storage micro unit 3 that low-voltage, high-current battery pile 1 is connected with output port of power source 4, be connected to energy management unit 2 between low-voltage, high-current battery pile 1 and N number of energy storage micro unit 3, wherein, N is more than or equal to 2, energy management unit 2 includes the energy distribution unit 22 be connected with low-voltage, high-current battery pile 1, output control unit 23, N+1 electronic switch 24, and control centre 21, energy distribution unit 22 is all connected with control centre 21 with output control unit 23, electronic switch 24 is MOSFET field effect transistor, the positive pole of N+1 electronic switch 24 is all connected with the output port of energy distribution unit 22, the control of N+1 electronic switch 24 is extremely all connected with output control unit 23, the negative pole of N number of electronic switch 24 is all connected with the energy storage input port 32 of N number of energy storage micro unit 3, energy storage micro unit 3 comprises energy storage and exports high level port 31, energy storage input port 32 and energy storage output low level port 33, in two adjacent energy storage micro units, the energy storage of the energy storage micro unit that the energy storage output low level port 33 of the energy storage micro unit that level is high is low with level exports high level port 31 and is connected, the energy storage of the energy storage micro unit at top exports high level port 31 and is connected with output port of power source 4 positive pole, and the energy storage output low level port 33 of end energy storage micro unit is connected with output port of power source 4 negative pole.
Under the control of the energy of low-voltage, high-current battery pile 1 heart 21 in the controlling, different source voltage polarity forms is presented at each delivery outlet of its output port P-PORT by energy distribution unit 22, control centre 21 comes to carry out macro-energy to each energy storage micro unit 3 one by one by the electronic switch 24 that output control unit 23 Synchronization Control is corresponding and supplements, thus realizes a high-power power supply.Specific implementation step is as follows:
(1), control centre 21 controls the output logic of energy distribution unit 22, battery pile voltage VBAT is made to be presented on output port P11 and P12, control centre 21 passes through electronic switch MC1, MC2 conducting corresponding to output control unit 23 Synchronization Control simultaneously, the voltage being now presented on P21 and P22 two ends is also battery pile voltage VBAT, this voltage puts on the energy storage input port 32 of energy storage micro unit 3, the energy storage component of energy storage micro unit 3 inside is charged, achieves battery pile energy and directly the energy of energy storage micro unit is loaded by electronic switch;
(2), control centre according to control law, same realization loads the energy of other energy storage micro unit intrasystem;
(3), control centre 21 is with the process of the frequency cycle step (1) of tens times or higher per second, (2), for each energy storage micro unit 3 provides continuously energy, thus ensure their voltage stability and ensure their stability of external output energy.
(4), each energy storage micro unit 3 is cascaded structures, they collectively form a high voltage source.
Output rusults under the control of the heart 21 is in the controlling:
1., output voltage:
Voltage due to each energy storage micro unit be loaded is all VBAT magnitudes of voltage, so theoretic output voltage is: VOUT=VC1+VC2+VC3+ ... .+VCN=N*VBAT, namely output voltage N doubly with battery pile voltage, in fact due to the loss of circuit and switching tube, actual output voltage will lower than this voltage.
2., power output:
Owing to being electronic switch Direct Transform power output, so power output is the power of battery pile; Due to electric capacity have 100% depth of discharge and infinitely-great discharge-rate (be infinitely great in theory, but reality affects restriction by internal resistance, line resistance, heating etc.), if the energy-storage travelling wave tube of micro unit is electric capacity, it exports instantaneous property close to capacitance characteristic, this moment length depend on the energy storage size of micro unit electric capacity.
3., the present invention is designed to relatively high power assembly electronic switch and energy storage micro unit, the easily power supply of a structure high-power.
Embodiment
See Fig. 2, energy distribution unit 2 is made up of reversal bridge 25, two power source buss 26,27 and the reversal bridge driver element 28 that is connected with control centre 21, reversal bridge 25 includes four MOSFET field effect transistor, the grid of four MOSFET field effect transistor is all connected with reversal bridge driver element 28, MOSFET field effect transistor MQ1 is all connected with the positive pole of low-voltage, high-current battery pile 1 with the positive pole of MOSFET field effect transistor MQ2, MOSFET field effect transistor MQ3 is all connected with the negative pole of low-voltage, high-current battery pile 1 with the negative pole of MOSFET field effect transistor MQ4, the negative pole of MOSFET field effect transistor MQ1 and the positive pole of MOSFET field effect transistor MQ3 are all connected with a wherein power source bus 26, the negative pole of MOSFET field effect transistor MQ2 is all connected with another root power source bus 27 with the positive pole of MOSFET field effect transistor MQ4, the positive pole of even number electronic switch 24 is all connected with a wherein power source bus 26, the positive pole of odd electron switch 24 is all connected with another root power source bus 27.
See Fig. 2 and Fig. 3, reversal bridge driver element 28 controls MQ1 and the MQ4 conducting of reversal bridge 25, when MQ2 and MQ3 closes, the voltage that low-voltage, high-current battery pile 1 presents on power source bus 26 is for being high level, the voltage that power source bus 27 presents is low level, control centre 21 controls electronic switch MC2 and MC3 conducting, the output P22 of electronic switch 24 and the voltage at P23 two ends are battery pile voltage VBAT, this voltage directly loads with on the C2 of energy storage micro unit 3, realize the charging to C2, after charging certain hour section, close electronic switch MC2 and MC3, stop the charging to C2, same logic realization to the charging of the certain hour of C4, realize to all even number energy storage micro unit certain hours charging,
The same aforesaid way of principle, reversal bridge driver element 28 controls MQ2 and the MQ3 conducting of reversal bridge 25, when MQ1 and MQ4 closes, the voltage that low-voltage, high-current battery pile 1 presents on power source bus 26 is for being low level, the voltage that power source bus 27 presents is high level, control centre 21 controls electronic switch MC1 and MC2 conducting, the output P21 of electronic switch 24 and the voltage at P22 two ends are battery pile voltage VBAT, this voltage directly loads with on the C1 of energy storage micro unit 3, realize the charging to C1, after charging certain hour section, close electronic switch MC1 and MC2, stop the charging to C1, the charging of certain hour is carried out at same logic control center 21 one by one to all odd number energy storage micro units,
Continuous print moves in circles charging, has ensured the electric pressure that the voltage of all energy storage micro units is identical with battery pile voltage; Multiple series connection with the energy storage micro unit identical with battery pile voltage, defines a high-power power supply.
See Fig. 4 and Fig. 5, low-voltage, high-current battery electricity, comprises multiple monocell in 1, multiple cell parallel connection is connected or parallel connection after the series connection of several cell again, when multiple low-voltage, high-current battery pile combination, the parallel wire in the low-voltage, high-current battery pile of its correspondence also docks one by one.
See Fig. 6, energy storage micro unit 3 includes inductance L, diode D and electric capacity C, the electric capacity two ends of all energy storage micro units 3 export high level port 31 with energy storage respectively and energy storage output low level port 33 is connected, one end of inductance L is connected with energy storage input port 32, the other end and the energy storage of inductance L export high level port 31 and are connected, the positive pole of diode D is connected with energy storage output low level port 33, and the negative pole of diode D is connected with energy storage input port 32; The effect of inductance L is charging buffering and energy storage, and the effect of electric capacity C is storage power and releases energy, and the effect of diode D is afterflow conducting.
See Fig. 7, electronic switch 24 is electronic switches of an one-way conduction, namely when controlling pole and making it cut-off, two-way (the pole P that makes a comment or criticism hold, negative pole N hold) all can not conducting, and triode possesses this characteristic, and MOSFET and IGBT all includes backward diode, when controlling pole and making it cut-off, oppositely still conducting.
See Fig. 8, for ensureing electronic switch 24 two-way all not conductings when controlling pole and making it to end, realize by the unit switch form of Fig. 8, the source electrode of two N-type MOSFET pipes connects, the positive pole P that the drain electrode of N-type MOSFET pipe MC11 connects electronic switch holds, the negative pole N that the drain electrode of N-type MOSFET pipe MC12 connects electronic switch holds, when the voltage between G and GN end is zero, and the two-way all not conductings in P and N two ends.The combination of same available P type MOSFET realizes this function, and the implementation of IGBT is also like this.
Claims (6)
1. a high-power electrical source of power, it is characterized in that: include N number of energy storage micro unit that low-voltage, high-current battery pile is connected with output port of power source, be connected to energy management unit between low-voltage, high-current battery pile and N number of energy storage micro unit, wherein, N is more than or equal to 2; Described energy management unit include be connected with low-voltage, high-current battery pile energy distribution unit, output control unit, a N+1 electronic switch and control centre, described energy distribution unit is all connected with control centre with output control unit; The positive pole of N+1 electronic switch is all connected with the output port of energy distribution unit, and the control of N+1 electronic switch is extremely all connected with output control unit, and the negative pole of N number of electronic switch is all connected with the energy storage input port of N number of energy storage micro unit; Described energy storage micro unit comprises energy storage and exports high level port, energy storage input port and energy storage output low level port, in two adjacent energy storage micro units, the energy storage of the energy storage micro unit that the energy storage output low level port of the energy storage micro unit that level is high is low with level exports high level port and is connected, the energy storage of the energy storage micro unit at top exports high level port and is connected with output port of power source positive pole, and the energy storage output low level port of end energy storage micro unit is connected with output port of power source negative pole.
2. a kind of high-power electrical source of power according to claim 1, is characterized in that: described energy distribution unit is made up of reversal bridge, two power source buss and the reversal bridge driver element that is connected with control centre, described reversal bridge includes four MOSFET field effect transistor, the grid of four MOSFET field effect transistor is all connected with reversal bridge driver element, MOSFET field effect transistor MQ1 is all connected with the positive pole of low-voltage, high-current battery pile with the positive pole of MOSFET field effect transistor MQ2, MOSFET field effect transistor MQ3 is all connected with the negative pole of low-voltage, high-current battery pile with the negative pole of MOSFET field effect transistor MQ4, the negative pole of MOSFET field effect transistor MQ1 and the positive pole of MOSFET field effect transistor MQ3 are all connected with a wherein power source bus, the negative pole of MOSFET field effect transistor MQ2 is all connected with another root power source bus with the positive pole of MOSFET field effect transistor MQ4, the positive pole of even number electronic switch is all connected with a wherein power source bus, the positive pole of odd electron switch is all connected with another root power source bus.
3. a kind of high-power electrical source of power according to claim 1, is characterized in that: described electronic switch be one-way conduction electronic switch or by the electronic switch that can not oppositely end through combination after is formed the electronic switch that can oppositely end combination.
4. a kind of high-power electrical source of power according to claim 1, is characterized in that: described energy storage micro unit selects the combination of electric capacity or inductance and electric capacity or micro-energy secondary battery or above-mentioned combining structure.
5. a kind of high-power electrical source of power according to claim 1, is characterized in that: described low-voltage, high-current battery pile is lithium ion battery pile, Ni-MH battery pile, lead-acid battery pile or fuel cell pile.
6. a kind of high-power electrical source of power according to claim 1, it is characterized in that: in described low-voltage, high-current battery pile, comprise multiple monocell, multiple cell parallel connection is connected or parallel connection after the series connection of several cell again, when multiple low-voltage, high-current battery pile combination, the parallel wire in the low-voltage, high-current battery pile of its correspondence also docks one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410791816.0A CN104578257A (en) | 2014-12-19 | 2014-12-19 | High-voltage and high-power power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410791816.0A CN104578257A (en) | 2014-12-19 | 2014-12-19 | High-voltage and high-power power supply |
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| CN104578257A true CN104578257A (en) | 2015-04-29 |
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| CN201410791816.0A Pending CN104578257A (en) | 2014-12-19 | 2014-12-19 | High-voltage and high-power power supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201219239Y (en) * | 2008-06-18 | 2009-04-08 | 合肥同智科技发展有限公司 | Low power-input high-power-output start power supply |
| CN101572420A (en) * | 2008-04-30 | 2009-11-04 | 冉茂鑫 | Current type double-input uninterrupted switch power supply |
| CN101917047A (en) * | 2010-08-20 | 2010-12-15 | 深圳市科列技术有限公司 | Method and circuit for dynamically equalizing battery management system |
| CN102664433A (en) * | 2012-03-23 | 2012-09-12 | 东莞新能德科技有限公司 | Cell equalization system based on bidirectional DC/DC |
| CN204290414U (en) * | 2014-12-19 | 2015-04-22 | 合肥创源车辆控制技术有限公司 | A kind of high-power electrical source of power |
-
2014
- 2014-12-19 CN CN201410791816.0A patent/CN104578257A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572420A (en) * | 2008-04-30 | 2009-11-04 | 冉茂鑫 | Current type double-input uninterrupted switch power supply |
| CN201219239Y (en) * | 2008-06-18 | 2009-04-08 | 合肥同智科技发展有限公司 | Low power-input high-power-output start power supply |
| CN101917047A (en) * | 2010-08-20 | 2010-12-15 | 深圳市科列技术有限公司 | Method and circuit for dynamically equalizing battery management system |
| CN102664433A (en) * | 2012-03-23 | 2012-09-12 | 东莞新能德科技有限公司 | Cell equalization system based on bidirectional DC/DC |
| CN204290414U (en) * | 2014-12-19 | 2015-04-22 | 合肥创源车辆控制技术有限公司 | A kind of high-power electrical source of power |
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Application publication date: 20150429 |
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