CN107947575A - Modularization can the double Buck tandem cell charger main circuit topologies of connection in series-parallel - Google Patents
Modularization can the double Buck tandem cell charger main circuit topologies of connection in series-parallel Download PDFInfo
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- CN107947575A CN107947575A CN201711414747.1A CN201711414747A CN107947575A CN 107947575 A CN107947575 A CN 107947575A CN 201711414747 A CN201711414747 A CN 201711414747A CN 107947575 A CN107947575 A CN 107947575A
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- 238000004146 energy storage Methods 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 230000006837 decompression Effects 0.000 claims abstract description 4
- 238000013499 data model Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- H02J7/022—
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H02J2007/10—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
Abstract
The invention discloses a kind of modularization can the double Buck tandem cell charger main circuit topologies of connection in series-parallel, which is formed by the cascade of two-stage Buck chopper circuits;By full-bridge rectification module D in circuit1With filter capacitor C1AC/DC industrial frequency rectifying modules are formed, its input is 220V alternating currents, and output voltage is 310V direct currents;First order Buck buck choppers converter is by switching tube S1, diode D2, energy storage inductor L1And filter capacitor C2Form, its input is 310V DC voltages, is exported as the DC voltage through primary decompression;Second level Buck buck choppers converter is by switching tube S2, diode D3, energy storage inductor L2And filter capacitor C3Form.The present invention is suitable for different capabilities scale battery pack, can connection in series-parallel use so that the charger output voltage precision higher, output current driving force bigger, and lower to integral product assembling device performance requirement.
Description
Technical field
The present invention relates to battery energy storage technical field, and in particular to a kind of modularization can the double Buck tandem cells of connection in series-parallel fill
Motor main circuit topology.
Background technology
With in October, 2017 China's development with reforming finger of committee's issue on promoting energy storage technology and industry development
Opinion issue is led, the application of China's battery energy storage technology will enter a brand-new development epoch.Energy-storage battery extensively should
With making its requirement to charging equipment constantly be lifted, being applicable to the charger of different capabilities scale energy-storage battery group will welcome newly
Challenge.Since the charge requirement of different model, different scale cell group is different, so also having for the performance requirement of charger
Larger difference.
Energy-storage battery improper use, will reduce its service life significantly.The many because being known as of its service life length are influenced, its
In a key factor be discharge and recharge improper use.Whether the charging process of battery is rationally maximum to the influence of battery in itself
, therefore rational charging modes are used, the service life of battery can be greatly prolonged.
The charge efficiency of current relatively conventional conventional linear mains charger and silicon-controlled charger is low, output ripple
Greatly, volume is heavy, it is difficult to meet that different scales type energy-storage battery is high-power, high efficiency charge requirement.Existing full-bridge high-frequency is inverse
Charging circuit after change through transformer transformation into multichannel reduced output voltage, such circuit are passed suitable for high-tension high-power energy
Pass, band isolation between output input, but its volume is larger, is not suitable for low-voltage small-capacity cells or miniature instrument for electric field
Close.And use charging of the topological structure for DC/DC buck choppers by the isolation buck conversion filtering output of Flyback converters
Circuit, has used the isolation of front stage, and the ripple of output voltage electric current is small, output voltage grade is fixed, transimission power is relatively low, fits
For to the relatively low low current low voltage power supply situation of power requirement or more precision instrument component to supply electricity consumption occasion.Both
High or low power occasion, which is unable to reach, to be taken into account, even if there is some products to reach the effect taken into account, but is existed unavoidably and is wasted one's talent on a petty job or small
Just circumstances by force.
The content of the invention
To solve the above problems, the present invention provides modularization can the double Buck tandem cell charger main circuits of connection in series-parallel open up
Flutter, output voltage precision higher, output current driving force bigger, its can the functions expanding that uses of connection in series-parallel its promote should
The property used.
To achieve the above object, the technical solution taken of the present invention is:
Modularization can the double Buck tandem cell charger main circuit topologies of connection in series-parallel, which is cut by two-stage Buck
Wave circuit cascade forms;By full-bridge rectification module D in circuit1With filter capacitor C1AC/DC industrial frequency rectifying modules are formed, it is inputted
For 220V alternating currents, output voltage is 310V direct currents;First order Buck buck choppers converter is by switching tube S1, diode D2, storage
Can inductance L1And filter capacitor C2Form, its input is 310V DC voltages, is exported as the DC voltage through primary decompression;The
Two level Buck buck choppers converter is by switching tube S2, diode D3, energy storage inductor L2And filter capacitor C3Form.
Wherein, the primary Buck circuit output voltages u of the main circuit topology2It is shown below:
In formula, α1For primary switch pipe S1Raster data model PWM duty cycle, t1onAnd t1offRespectively switching tube S1Open and close
The disconnected time;
Secondary Buck circuit output voltages u3It is shown below:
In formula, α2For secondary switch pipe S2Raster data model PWM duty cycle, t2onAnd t2offRespectively switching tube S2Open and close
The disconnected time;
Output voltage u can be obtained more than3With u0Relation be shown below:
Can must be by adjusting α by formula (3)1And α2Size, that is, adjustable output voltage size.
Wherein, two-stage converter output voltage current relationship used in parallel is shown below:
The two-stage converter output voltage current relationship being used in series is shown below:
Present invention can be suitably applied to different capabilities scale battery pack, can connection in series-parallel use so that the charger output voltage essence
Accuracy higher, output current driving force bigger, and it is lower to integral product assembling device performance requirement, make equipment manufacturing cost opposite
Decline.
Brief description of the drawings
Fig. 1 can the double Buck tandem cell charger main circuit topology figures of connection in series-parallel for modularization of the embodiment of the present invention
Fig. 2 is the equivalent circuit used in the embodiment of the present invention
Fig. 3 circuit topologies of the embodiment of the present invention are used in series equivalent circuit
Fig. 4 is single-stage Buck chopper circuit output voltage waveforms in the embodiment of the present invention
Fig. 5 is the circuit output voltage waveform of the embodiment of the present invention.
Embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
An embodiment of the present invention provides a kind of modularization can the double Buck tandem cell charger main circuit topologies of connection in series-parallel, by
The cascade of two-stage Buck chopper circuits forms;The inventive principle structure main circuit diagram is as shown in Figure 1.By full-bridge rectification module in circuit
D1With filter capacitor C1AC/DC industrial frequency rectifying modules are formed, its input is 220V alternating currents, and output voltage is 310V direct currents;First
Level Buck buck choppers converter is by switching tube S1, diode D2, energy storage inductor L1And filter capacitor C2Form, its input is
310V DC voltages, export as the DC voltage through primary decompression;Second level Buck buck choppers converter is by switching tube S2, two
Pole pipe D3, energy storage inductor L2And filter capacitor C3Form.
Primary Buck circuit output voltages u2It is shown below:
In formula, α1For primary switch pipe S1Raster data model PWM duty cycle, t1onAnd t1offRespectively switching tube S1Open and close
The disconnected time.
Secondary Buck circuit output voltages u3It is shown below:
In formula, α2For secondary switch pipe S2Raster data model PWM duty cycle, t2onAnd t2offRespectively switching tube S2Open and close
The disconnected time.
Output voltage u can be obtained more than3With u0Relation be shown below:
Can must be by adjusting α by formula (3)1And α2Size, that is, adjustable output voltage size.
The modularization that the invention proposes can the double another big features of Buck tandem cell charger main circuit topologies of connection in series-parallel just
It is that the charger can be used with connection in series-parallel.The double Buck cascaded charge machines of modularization equivalent circuit used in parallel is as shown in Figure 2.Module
It is used in parallel constant for loading received voltage swing to change double Buck cascaded circuit topologies, the purpose is to be increase output electricity
Size is flowed, so as to strengthen the driving force of circuit, converter is realized and powers to the high current of load.Twin-stage used in parallel becomes
Parallel operation output voltage current relationship is shown below:
It is as shown in Figure 3 that the double Buck cascaded charge machines of modularization are used in series equivalent circuit.
The double Buck cascaded circuit topologies of modularization are used in series has no too big intervention for output current size, the purpose is to
To strengthen output voltage precision and output voltage stability, make circuit that there is the environmental suitability of higher.The twin-stage being used in series
Converter output voltage current relationship is shown below:
When requiring input voltage to exchange (310V direct currents) for 220V, output voltage is 2.35V (single battery even charging voltage)
During direct current, single-stage Buck chopper circuit output voltage waveforms are as shown in Figure 4.
Upper figure can show that output voltage ripple Δ u ≈ 1.7V, output voltage ripple rate size is shown below:
Present invention design circuit output voltage waveform is as shown in figure 5, output voltage ripple Δ u ≈ 0.018V, output voltage
Ripple rate r=0.0076
Design circuit output precision higher of the invention is obtained by above voltage ripple and the big I of output voltage ripple rate, is stablized
Property is more preferable.Output voltage is by switching tube S in the design1And S2Driving duty cycle alpha1And α2Together decide on, duty cycle alpha1And α2With
Single-stage drives duty cycle alpha0Relation be shown below:
α1×α2=α0(7)
Due to 0 < α1< 1 and 0 < α2< 1, then α0< α1And α0< α2.As input voltage uiWith output voltage uoDifference compared with
When big, if realizing buck functionality using only monopole Buck copped waves topology, its output voltage uoStability and precision will drop significantly
It is low, and also have higher requirement to the stability of input terminal voltage.And for twin-stage topology, its output voltage is by two-stage electricity
Buckling is changed, and precision and the voltage stability enhancing of its output voltage, make input terminal voltage reduce the interference of output terminal, its is comprehensive
Performance indicator is closed to greatly improve.
Double Buck cascaded topologies circuits of this specific implementation design are low to power supply stability requirement, charger output electricity
It is small to emboss ripple rate, output accuracy is high, small to battery impact, adds the service life of energy-storage battery indirectly;Two-stage switch drives
PWM duty cycle enlarged relative, to design device performance requirements bottom, is more easy to realize, manufactures cost relative reduction on hardware;The topology
Can connection in series-parallel use, export occasion suitable for high current or high-accuracy voltage.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. modularization can the double Buck tandem cell charger main circuit topologies of connection in series-parallel, it is characterised in that the main circuit topology by
The cascade of two-stage Buck chopper circuits forms;By full-bridge rectification module D in circuit1With filter capacitor C1Form AC/DC industrial frequency rectifying moulds
Block, its input is 220V alternating currents, and output voltage is 310V direct currents;First order Buck buck choppers converter is by switching tube S1、
Diode D2, energy storage inductor L1And filter capacitor C2Form, its input is 310V DC voltages, is exported as through primary decompression
DC voltage;Second level Buck buck choppers converter is by switching tube S2, diode D3, energy storage inductor L2And filter capacitor C3
Form.
2. modularization as claimed in claim 1 can the double Buck tandem cell charger main circuit topologies of connection in series-parallel, its feature exists
In primary Buck circuit output voltages u2It is shown below:
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Secondary Buck circuit output voltages u3It is shown below:
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Between;
Output voltage u can be obtained more than3With u0Relation be shown below:
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Can must be by adjusting α by formula (3)1And α2Size, that is, adjustable output voltage size.
3. modularization as claimed in claim 1 can the double Buck tandem cell charger main circuit topologies of connection in series-parallel, its feature exists
In two-stage converter output voltage current relationship used in parallel is shown below:
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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CN110299842A (en) * | 2019-07-23 | 2019-10-01 | 东莞保力电子有限公司 | A kind of pressurization afterflow low voltage difference Buck type switching power unit |
CN112039336A (en) * | 2020-07-30 | 2020-12-04 | 珠海格力电器股份有限公司 | Vehicle-mounted DC-DC conversion device and method and automobile |
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CN113437872A (en) * | 2021-06-26 | 2021-09-24 | 中科华士电气科技南京有限公司 | High-frequency auxiliary power supply based on multiple Buck circuits |
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CN113474986A (en) * | 2019-02-27 | 2021-10-01 | Abb电网瑞士股份公司 | Buck-boost converter unit for MMC |
CN113474986B (en) * | 2019-02-27 | 2022-06-03 | 日立能源瑞士股份公司 | Converter unit for MMC, MMC and control method thereof |
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CN110299842A (en) * | 2019-07-23 | 2019-10-01 | 东莞保力电子有限公司 | A kind of pressurization afterflow low voltage difference Buck type switching power unit |
CN110299842B (en) * | 2019-07-23 | 2024-02-13 | 东莞保力电子有限公司 | Boost freewheel low pressure differential Buck type switching power supply device |
CN112039336A (en) * | 2020-07-30 | 2020-12-04 | 珠海格力电器股份有限公司 | Vehicle-mounted DC-DC conversion device and method and automobile |
CN112491154A (en) * | 2020-11-13 | 2021-03-12 | 哈尔滨工业大学 | Multi-module SISO circuit topology and control method for receiving end of high-power dynamic wireless power supply system of electric automobile |
CN112491154B (en) * | 2020-11-13 | 2023-01-20 | 哈尔滨工业大学 | Control method of multi-module SISO circuit topology at receiving end of dynamic wireless power supply system |
CN113437872A (en) * | 2021-06-26 | 2021-09-24 | 中科华士电气科技南京有限公司 | High-frequency auxiliary power supply based on multiple Buck circuits |
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