CN106058903A - Bidirectional DC converter for battery energy storage system - Google Patents
Bidirectional DC converter for battery energy storage system Download PDFInfo
- Publication number
- CN106058903A CN106058903A CN201610457688.5A CN201610457688A CN106058903A CN 106058903 A CN106058903 A CN 106058903A CN 201610457688 A CN201610457688 A CN 201610457688A CN 106058903 A CN106058903 A CN 106058903A
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- CN
- China
- Prior art keywords
- electrically connected
- outfan
- converter
- bidirectional
- storage system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a bidirectional DC converter for a battery energy storage system. The bidirectional DC converter comprises a machine body and a cover plate, wherein the cover plate is fixed on the end surface of the right side of the machine body through a fastening screw; the surface of the cover plate is provided with a display screen and an adjusting knob separately; a bidirectional DC conversion unit is arranged in the machine body and comprises a battery pack; an output end of the battery pack is electrically connected with a main switch assembly; the output end of a high-capacity inverter is electrically connected with a current measurement module; and the output end of the current measurement module is electrically connected with an input end of the display screen. By the bidirectional DC converter, constant-current charging and discharging control on batteries can be achieved by controlling filtering inductance current of a BDC controller; the high-capacity inverter is in rectified operation in the charged state; the battery pack extracts active current from a power grid for constant-current charging on the battery pack; and the battery pack releases energy to the power grid through the inverter in the discharged state, so that bidirectional conversion is achieved.
Description
Technical field
The present invention relates to two-way DC converter technical field, be specially a kind of battery energy storage system bidirectional, dc and convert
Device.
Background technology
In current global green energy resource, energy-saving and emission-reduction strategy, not only wind-power electricity generation, solar electrical energy generation, bioelectrogenesis
With nuclear energy power generation technology as the object first developed with support on policy, and energy storing technology is also served as research from now on
Direction, particularly battery energy storage system, " the paddy electricity " at night, not only just as one special " bank ", can be stored away daytime by it
With, or electric energy on ordinary days more than needed is stored away, take out a solution matter of great urgency during to power tense even power failure.And
Also being urban distribution network peak load shifting " scheduling master-hand ", no matter the key equipment of wind-light complementary energy storage system is new forms of energy especially
Develop or the development of intelligent grid all be unable to do without it.Having two important ingredients at battery energy storage system, first is exactly
It is known as the battery in the battery energy storage system of " heart ", is responsible for storage and the release of energy；Second is known as " large artery trunks " exactly
Battery energy storage system in charge/discharge transformation device, it be battery energy storage system energy transmission bidirectional high speed passage.The two lacks
One can not, inseparable.Battery in battery energy storage system the most only uses traditional lead-acid accumulator, sodium-sulphur battery, vanadium
Battery, lithium battery and Ni-MH battery etc. are also numerous and confused to be used in battery energy storage system, and therefore discharge and recharge is become by battery energy storage system
The requirement changing device is more and more higher, and he does not require nothing more than discharge and recharge variator and has traditional charging/discharging function, also needs to meet battery
The wide scope operation of voltage, quick charge and discharge operation, momentary high power output operation, reactive-load compensation operation, islet operation and many groups
The discharge and recharge service requirement of battery.
Summary of the invention
It is an object of the invention to provide a kind of battery energy storage system two-way DC converter, to solve above-mentioned background skill
The problem proposed in art.
For achieving the above object, the present invention provides following technical scheme: a kind of battery energy storage system bidirectional, dc converts
Device, including body and cover plate, described cover plate is fixed in body its right end face by trip bolt, and described lid surface sets respectively
There are display screen and adjusting knob, and adjusting knob is positioned at below display screen, signal lamp, institute are installed on the left of described display screen
Stating the lid surface left and right sides and be mounted on electrical network output port, described internal body is provided with bidirectional, dc converter unit, described
Bidirectional, dc converter unit includes that set of cells, the outfan of described set of cells are electrically connected with master switch assembly, described master switch
The outfan of assembly has been electrically connected with voltage sensor and current sensor, described voltage sensor and current sensor
Outfan is all electrically connected with synchronous circuit, and the outfan of described synchronous circuit is electrically connected with rectification module, described rectification mould
The outfan of block is electrically connected with PWM controller, and the outfan of described PWM controller is electrically connected with mode switch element, institute
The outfan stating mode switch element is electrically connected with A/D change-over circuit, and the outfan of described A/D change-over circuit is electrically connected with
Dc bus, the outfan of described dc bus is electrically connected with filter capacitor component, the outfan of described filter capacitor component
Being electrically connected with filter circuit, the outfan of described filter circuit is electrically connected with BDC controller, described BDC controller defeated
Going out end and be electrically connected with Large Copacity inverter, the outfan of described Large Copacity inverter is electrically connected with current measurement module, institute
The outfan stating current measurement module is electrically connected at the input of display screen.
Preferably, described body its right end face corner has the screw matched with trip bolt.
Preferably, described body uniformly has thermal vias, and thermal vias aperture is at 0.2 millimeter.
Preferably, the outfan of described voltage sensor is also electrically connected with voltage loads warning module, and voltage loads
Warning module is internally installed buzzer alarm.
Compared with prior art, the invention has the beneficial effects as follows: this battery energy storage system two-way DC converter, pass through
Control BDC controller filter inductance electric current and can realize the discharge and recharge current constant control of battery, when charged state, Large Copacity inversion
Device rectification runs, and set of cells extracts watt current from electrical network and set of cells is carried out constant-current charge, and during discharge condition, set of cells is led to
Cross inverter to be discharged in electrical network by energy, it is achieved two-way changing.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is organism internal structure schematic diagram of the present invention；
Fig. 3 is bidirectional, dc converter unit system block diagram of the present invention.
In figure: 1 body, 2 cover plates, 3 display screens, 4 signal lamps, 5 adjusting knobs, 6 electrical network output ports, 7 fastening spiral shells
Nail, 8 bidirectional, dc converter units, 9 set of cells, 10 master switch assemblies, 11 voltage sensors, 12 current sensors, 13 synchronization electricity
Road, 14 rectification modules, 15PWM controller, 16 mode switch element, 17 A/D change-over circuits, 18 dc bus, 19 filter capacitors
Assembly, 20 filter circuits, 21 BDC controllers, 22 Large Copacity inverters, 23 current measurement modules, 24 voltage loads early warning moulds
Block, 241 buzzer alarm.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1-3, the present invention provides a kind of technical scheme: a kind of battery energy storage system two-way DC converter,
Including body 1 and cover plate 2, described cover plate 2 is fixed in body 1 its right end face by trip bolt 7, and described cover plate 2 surface is divided
It is not provided with display screen 3 and adjusting knob 5, and adjusting knob 5 is positioned at below display screen 3, is provided with signal on the left of described display screen 3
Display lamp 4, the left and right sides, described cover plate 2 surface is mounted on electrical network output port 6, and described body 1 is internal is provided with bidirectional, dc
Converter unit 8, described bidirectional, dc converter unit 8 includes that set of cells 9, the outfan of described set of cells 9 are electrically connected with main opening
Closing assembly 10, the outfan of described master switch assembly 10 has been electrically connected with voltage sensor 11 and current sensor 12, institute
The outfan stating voltage sensor 11 and current sensor 12 is all electrically connected with synchronous circuit 13, described synchronous circuit 13 defeated
Going out end and be electrically connected with rectification module 14, the outfan of described rectification module 14 is electrically connected with PWM controller 15, described PWM
The outfan of controller 15 is electrically connected with mode switch element 16, and the outfan of described mode switch element 16 is electrically connected with
A/D change-over circuit 17, the outfan of described A/D change-over circuit 17 is electrically connected with dc bus 18, described dc bus 18
Outfan is electrically connected with filter capacitor component 19, and the outfan of described filter capacitor component 19 is electrically connected with filter circuit
20, the outfan of described filter circuit 20 is electrically connected with BDC controller 21, and the outfan of described BDC controller 21 electrically connects
Being connected to Large Copacity inverter 22, the outfan of described Large Copacity inverter 22 is electrically connected with current measurement module 23, described electricity
The outfan of flow measurement module 23 is electrically connected at the input of display screen 3.
Described body 1 its right end face corner has the screw matched with trip bolt 7.Uniformly have on described body 1
Thermal vias, and thermal vias aperture is at 0.2 millimeter.The outfan of described voltage sensor 11 is also electrically connected with voltage loads
Warning module 24, and voltage loads warning module 24 is internally installed buzzer alarm 241.
Operation principle: the discharge and recharge constant current control of set of cells 9 can be realized by controlling BDC controller 21 filter inductance electric current
System, during charged state, Large Copacity inverter 22 rectification runs, and set of cells 9 extracts watt current from electrical network and carries out set of cells 9
Constant-current charge, during discharge condition, energy is discharged in electrical network by set of cells 9 by Large Copacity inverter 22, wherein, filter capacitor
Assembly 19 can stablize the output voltage of BDC controller 21, filter circuit 20 can effectively reduce battery-end ripple voltage and
Ripple current, current sensor 12 can carry out overcurrent protection to master switch assembly 10, and the setting of mode switch element 16, at electricity
Pond group 9 constant-current charge is to after rated voltage, and system transfers the charging of specified pattern, when charging decays to predetermined value, charging automatically to
Terminating, current measurement module 23 detects the both positive and negative polarity of current direction.This apparatus structure is simple, reasonable in design, has the strongest reality
By value.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (4)
1. a battery energy storage system two-way DC converter, including body (1) and cover plate (2), described cover plate (2) is by tight
Gu screw (7) is fixed in body (1) its right end face, it is characterised in that: described cover plate (2) surface is respectively equipped with display screen (3)
With adjusting knob (5), and adjusting knob (5) be positioned at display screen (3) lower section, described display screen (3) left side signal designation is installed
Lamp (4), described cover plate (2) left and right sides, surface is mounted on electrical network output port (6), and described body (1) inside is provided with two-way
DC converting unit (8), described bidirectional, dc converter unit (8) includes set of cells (9), the outfan electricity of described set of cells (9)
Property connect have master switch assembly (10), the outfan of described master switch assembly (10) to be electrically connected with voltage sensor (11)
With current sensor (12), the outfan of described voltage sensor (11) and current sensor (12) is all electrically connected with synchronization electricity
Road (13), the outfan of described synchronous circuit (13) is electrically connected with rectification module (14), the output of described rectification module (14)
End is electrically connected with PWM controller (15), and the outfan of described PWM controller (15) is electrically connected with mode switch element
(16), the outfan of described mode switch element (16) is electrically connected with A/D change-over circuit (17), described A/D change-over circuit
(17) outfan is electrically connected with dc bus (18), and the outfan of described dc bus (18) is electrically connected with filter capacitor
Assembly (19), the outfan of described filter capacitor component (19) is electrically connected with filter circuit (20), described filter circuit (20)
Outfan be electrically connected with BDC controller (21), the outfan of described BDC controller (21) is electrically connected with Large Copacity inversion
Device (22), the outfan of described Large Copacity inverter (22) is electrically connected with current measurement module (23), described current measurement mould
The outfan of block (23) is electrically connected at the input of display screen (3).
A kind of battery energy storage system two-way DC converter the most according to claim 1, it is characterised in that: described body
(1) its right end face corner has the screw matched with trip bolt (7).
A kind of battery energy storage system two-way DC converter the most according to claim 1, it is characterised in that: described body
(1) uniformly have thermal vias on, and thermal vias aperture is at 0.2 millimeter.
A kind of battery energy storage system two-way DC converter the most according to claim 1, it is characterised in that: described voltage
The outfan of sensor (11) is also electrically connected with voltage loads warning module (24), and voltage loads warning module (24) is internal
Buzzer alarm (241) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457688.5A CN106058903A (en) | 2016-06-22 | 2016-06-22 | Bidirectional DC converter for battery energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457688.5A CN106058903A (en) | 2016-06-22 | 2016-06-22 | Bidirectional DC converter for battery energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106058903A true CN106058903A (en) | 2016-10-26 |
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ID=57168011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610457688.5A Pending CN106058903A (en) | 2016-06-22 | 2016-06-22 | Bidirectional DC converter for battery energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106058903A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137995A (en) * | 2019-06-17 | 2019-08-16 | 南通国轩新能源科技有限公司 | A kind of novel energy-storing DC converter |
| CN111987731A (en) * | 2020-08-12 | 2020-11-24 | 南京宏景智能电网科技有限公司 | Bidirectional energy storage current transformation control device |
-
2016
- 2016-06-22 CN CN201610457688.5A patent/CN106058903A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137995A (en) * | 2019-06-17 | 2019-08-16 | 南通国轩新能源科技有限公司 | A kind of novel energy-storing DC converter |
| CN111987731A (en) * | 2020-08-12 | 2020-11-24 | 南京宏景智能电网科技有限公司 | Bidirectional energy storage current transformation control device |
| CN111987731B (en) * | 2020-08-12 | 2024-04-30 | 南京宏景智能电网科技有限公司 | Bidirectional energy storage variable flow control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161026 |
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| WD01 | Invention patent application deemed withdrawn after publication |