CN109245274A - Transformer substation emergency battery device capable of being rapidly connected into direct current system - Google Patents
Transformer substation emergency battery device capable of being rapidly connected into direct current system Download PDFInfo
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- CN109245274A CN109245274A CN201811070294.XA CN201811070294A CN109245274A CN 109245274 A CN109245274 A CN 109245274A CN 201811070294 A CN201811070294 A CN 201811070294A CN 109245274 A CN109245274 A CN 109245274A
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- Prior art keywords
- battery module
- battery
- groups
- converter
- ferric phosphate
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- 229910052744 lithium Inorganic materials 0.000 claims description 70
- 239000005955 Ferric phosphate Substances 0.000 claims description 69
- 229940032958 ferric phosphate Drugs 0.000 claims description 69
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 69
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 69
- 239000000178 monomer Substances 0.000 claims description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 abstract 4
- 230000026676 system process Effects 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 62
- 238000000034 method Methods 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 6
- 230000001131 transforming effect Effects 0.000 description 4
- 101000717417 Arabidopsis thaliana Cysteine proteinase RD21A Proteins 0.000 description 3
- 101100523939 Arabidopsis thaliana RD22 gene Proteins 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 206010014357 Electric shock Diseases 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
-
- H02J7/0022—
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a transformer substation battery device capable of being rapidly accessed into a direct current system, which comprises: four first battery modules, the first battery modules outputting 24V direct current voltage; a second battery module, the second battery module outputting 12V DC voltage; the direct current output ends of the four first battery modules and the direct current output ends of the four second battery modules are connected in series and then are connected with a 110V direct current bus; the first battery module comprises eight groups of lithium iron phosphate battery packs, the eight groups of lithium iron phosphate battery packs are sequentially connected in series and then connected with the output end of the first battery module, and 24V direct-current voltage is output; the second battery module comprises four lithium iron phosphate battery packs, and the four lithium iron phosphate battery packs are connected with the output end of the second battery module after being sequentially connected in series and output 12V direct-current voltage. The device commissioning system process is simple and quick, the risks of battery short circuit and open circuit caused by the traditional carrying and installing modes are avoided, and the reliable operation of the stored energy of the transformer substation is guaranteed.
Description
Technical field
The present invention relates to substation's emergency service field more particularly to a kind of substation's emergency for quickly accessing direct current system
Cell apparatus.
Background technique
For battery as the unique stored energy source of substation, importance is self-evident.When storage batteries of transformer substation group exists
It when the case where open circuit, will be unable to provide direct voltage output, need operation maintenance personnel to put into emergency battery group at this time to substitute event
Hinder the operation of battery group, emergency battery group is carried to substation for operation maintenance personnel, is connected into whole group to put by traditional approach
Operation, this mode suffer from the drawback that
On the one hand, lead-acid accumulator monomer weight 25-30kg, operation maintenance personnel are generally required 54 or 108 single batteries
It is carried to substation, is connected into whole group then to put into operation.This process takes time and effort, 6-8 people's completion is often needed to carry, install,
The process of access system is to complete to put into operation, and process time-consuming 1 hour or more.The process to put into operation is not completed in emergency battery group
In, easily transformer station direct current system is made to fall into bus risk status because not obtaining emergency power supply.
On the other hand, handling process, the contact between single battery easily lead to battery short circuit, directly result in battery fire
The even risks such as person burn.
Finally, during the installation process, since 54 or 108 batteries need to be connected to put into operation, the order of connection of battery,
Correct, cell connector the installation tightness that connects of cable positive and negative anodes all proposes the technical ability qualification of operation maintenance personnel
Certain requirement, once operating mistake easily causes battery short circuit, the open circuit even event of person burn.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of substation batteries dress for quickly accessing direct current system
It sets, which uses ferric phosphate lithium cell, can stablize output 110V DC voltage, can quickly access transforming plant DC power supply
System, it is convenient and efficient.
In order to solve the above technical problem, the present invention provides a kind of substation batteries device for quickly accessing direct current system,
Include:
Four the first battery modules, first battery module export 24V DC voltage；
One the second battery module, second battery module export 12V DC voltage；
The DC output end of above-mentioned 5 battery modules is connect after being connected in series with 110V DC bus；Wherein,
First battery module include eight groups of ferric phosphate lithium cell groups, eight groups of ferric phosphate lithium cell groups be sequentially connected in series after with
The DC output end of first battery module connects, and exports 24V DC voltage；
Second battery module includes ferric phosphate lithium cell group described in four groups, and four groups of ferric phosphate lithium cell groups are sequentially connected in series
It is connect afterwards with the DC output end of the second battery module, exports 12V DC voltage.
Wherein, first battery module further includes the first breaker, and eight groups of ferric phosphate lithium cell groups are connected in series
It is connect afterwards by first breaker with the DC output end of first battery module.
Wherein, the ferric phosphate lithium cell group includes at least two monomer ferric phosphate lithium cells being connected in parallel with each other, institute
The rated output voltage for stating monomer ferric phosphate lithium cell is direct current 3V.
Wherein, first battery module further includes the first DC/AC converter, the second breaker, third breaker, first
Accessory power outlet is exchanged, the first DC/AC converter is used to direct current 24V voltage being converted to 220V AC voltage；Wherein
Positive output end after eight groups of ferric phosphate lithium cell groups are connected in series is turned by the second breaker and the first DC/AC
The positive input terminal of parallel operation connects, and negative output terminal is connected by the negative input end of third breaker and the first DC/AC converter
It connects, the output end of the first DC/AC converter is connect with the first exchange accessory power outlet.
Wherein, first battery module further includes the first current transformer, the first battery management unit and multiple
Four breakers, first switch, DC/DC converter, the DC/DC converter are used to being converted to 24V DC voltage into 12V DC electricity
Pressure,
Eight groups of ferric phosphate lithium cell groups are connect after being connected in series with first current transformer, first Current Mutual Inductance
Device sends the cell current value to first battery management unit by cable,
Eight groups of ferric phosphate lithium cell groups also pass through the input of the first switch and the DC/DC converter after being connected in series
End connection, the output end of the DC/DC converter are connect with the direct-flow input end of first battery management unit,
The each group of ferric phosphate lithium cell also passes through corresponding 4th breaker and connect with the first battery management unit.
Wherein, first battery module further includes the first controllable switch, and the output end of the first DC/AC converter is logical
It crosses first controllable switch to connect with first AC socket, the control terminal of the controllable switch and first cell tube
Manage unit connection.
Wherein, second battery module further includes the 5th breaker, and four groups of ferric phosphate lithium cell groups are connected in series
It is connect afterwards by the 5th breaker with the DC output end of second battery module.
Wherein, second battery module includes the 2nd DC/AC converter, the 6th breaker, the 7th breaker, the second friendship
Accessory power outlet is flowed, the 2nd DC/AC converter is used to 12V DC voltage being converted to 220V AC voltage,
After four groups of ferric phosphate lithium cell groups are connected in series, anode passes through the 6th breaker and the 2nd DC/AC
The electrode input end of converter connects, and cathode is defeated by the cathode of the 7th breaker and the 2nd DC/AC converter
Enter end connection, the output end of the 2nd DC/AC converter is connect with the second exchange accessory power outlet.
Wherein, second battery module further include the second current transformer, it is the second battery management unit, multiple eight disconnected
Road device,
Four groups of ferric phosphate lithium cell groups are connect after being connected in series with second current transformer, second Current Mutual Inductance
Device sends cell current value to second battery management unit by cable,
The each group of ferric phosphate lithium cell also passes through corresponding 8th breaker and connect with the second battery management unit,
The input terminal of the 2nd DC/AC converter passes through the direct-flow input end of second switch and second battery management unit
Connection.
Wherein, second battery module further includes the second controllable switch, and the output end of the 2nd DC/AC converter is logical
It crosses second controllable switch to connect with the second exchange accessory power outlet, the control terminal of the controllable switch and second electricity
The connection of pond administrative unit.
The substation batteries device for quickly accessing direct current system of the embodiment of the present invention, in the first battery module and the second electricity
It is all made of 2 monomer ferric phosphate lithium cells in the module of pond to be connected in parallel to form battery pack, the exportable 24V direct current of the first battery module
Exportable 110V DC voltage is connected in series in 4 the first battery modules and the second battery module by voltage, which passes through
Direct current 110V output voltage is accessed transformer station direct current system by High-current output plug-in unit, be can be used as emergency power supply and is ensured direct current system
The normal table of bus exports, and avoids transforming plant DC bus loss of pressure dangerous；Furthermore the first battery module and the second battery module
Exportable 220V AC voltage, the device can meet the emergence power needs of most transformer station direct current systems, the present invention
Device handling process only need 2 people, carrying or installing can avoid battery short circuit, open circuit risk, can access system in 5 minutes
System, therefore the achievement puts into operation, systematic procedure is simply quick, overcomes tradition is carried and Installation Modes easily cause battery short circuit, open circuit
Risk avoids direct current system bus loss of pressure resulting from and person electric shock risk, has ensured the reliable of substation's stored energy source
Operation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram signal of substation batteries device for quickly accessing direct current system of the embodiment of the present invention
Figure.
Fig. 2 is a kind of first battery module of the substation batteries device for quickly accessing direct current system of the embodiment of the present invention
Circuit diagram.
Fig. 3 is a kind of second battery module of the substation batteries device for quickly accessing direct current system of the embodiment of the present invention
Circuit diagram.
Specific embodiment
The explanation of following embodiment be with reference to attached drawing, can be to the specific embodiment implemented to the example present invention.
Referring to shown in Fig. 1, the present invention provides a kind of substation's emergency cell device for quickly accessing direct current system, packet
It includes:
Four the first battery modules 1, first battery module export 24V DC voltage,
One the second battery module 2, second battery module export 12V DC voltage, above-mentioned 5 electricity
The DC output end of pond module is connect after being connected in series with 110V DC bus；Wherein,
First battery module includes eight groups of ferric phosphate lithium cell groups, eight groups of ferric phosphate lithium cell groups be connected in series after with first
The output end of battery module connects, and exports 24V DC voltage；
Second battery module includes ferric phosphate lithium cell group described in four groups, four groups of ferric phosphate lithium cell groups be connected in series after with
The output end of second battery module connects, and exports 12V DC voltage.
Specifically, for ferric phosphate lithium cell compared with traditional lead-acid accumulator, energy ratio is 4-5 times of lead-acid accumulator,
Has the advantages that small in size, light-weight, suitable high current charge-discharge.
Specifically, the direct current of the first battery module and the first battery module and the first battery module and the second battery module
Output end passes through 75mm2Flexible cable series connection, then draws and is connected to high current input plug-in unit, this plug-in unit can meet high current (0-
250A) input is that all battery packs charge.
Specifically, in order to improve the reliability of battery pack, each group of ferric phosphate lithium cell group includes two companies parallel with one another
The rated capacity of the monomer ferric phosphate lithium cell connect, monomer ferric phosphate lithium cell is 250Ah, and single battery voltage rating is
DC3V, as shown in Fig. 2, eight groups of ferric phosphate lithium cells are respectively that single battery 01 and 11 is connected in parallel the first group of ferric phosphate to be formed
Lithium battery, the second group of ferric phosphate lithium cell and monomer ferric phosphate lithium cell 03 and 13 that single battery 02 and 12 is formed, 04 He
14,05 and 15,06 and 16,07 and 17,08 and 18 is connected in parallel the third to be formed to eight groups of ferric phosphate lithium cell groups.
Wherein, in order to protect to ferric phosphate lithium cell group, eight groups of ferric phosphate lithium cell groups also pass through after being connected in series
First breaker RD is connect with the output end of the first battery module.
Wherein, in order to enable the first battery module can export 220V AC voltage, the first battery module 1 further includes first
DC/AC converter 102, the second breaker RD22 exchange accessory power outlet 104 with third breaker RD21, first, wherein first
DC/AC converter 102 is DC24V/AC220V converter, for direct current 24V to be converted to 220V AC voltage, eight groups of ferric phosphates
After lithium battery group is connected in series, cathode output end passes through the positive input of the second breaker RD22 and the first DC/AC converter 102
End connection, cathode output end are connect by third breaker RD21 with the negative input end of the first DC/AC converter 102, this
The output end of one DC/AC converter 102 is connect with the first exchange accessory power outlet 104, for exporting 220V AC voltage, the 220V
Alternating voltage can be used for the alternating voltage input of construction of transformer substation device.
In order to realize the management to the first battery module, first battery module further include the first battery management unit 107,
First current transformer 103, DC/DC converter 101, first switch 105 and multiple 4th breakers, wherein eight groups of phosphoric acid
Anode after lithium iron battery is connected in series is connect with the first current transformer 103, and the first current transformer 103 passes through cable C2-
1, C2-2, C2-3, C2-4 are uploaded to the first battery management unit 107, can show ferric phosphate lithium cell group by 9 cun of digital display screens
Electric current.After single battery 01-08 and 11-18 are connected in parallel respectively, also respectively by breaker RD1, RD2, RD3, RD4,
RD5, RD6, RD7, RD8, RD9 are connected to battery management unit port C10 to C18, can pass through digital display screen displaying monomer phosphorus
The cell voltage value of sour lithium iron battery.The positive and negative anodes of eight groups of ferric phosphate lithium cells after series connection pass through breaker respectively
RD22, RD21 are connect with the positive and negative both ends of the first DC/AC converter, and the input terminal of the first DC/AC converter 102 passes through the
One switch 105 is connect with the input terminal of DC/DC converter 101, the input terminal of DC/DC converter 101 and the first battery management list
The end C31 with C32 of member 107 connects, for providing DC input voitage for battery management unit.
Specifically, in order to realize the output control to 220V AC voltage, which further includes first controllable
The output end of switch 106, the first DC/AC converter 102 exchanges accessory power outlet 104 with first by the first controllable switch 106
Connection, the control terminal of first controllable switch 106 are connect with the end C34 of the first battery management unit 107.
After first battery module is by the way that eight groups of ferric phosphate lithium cells are connected in series, the output of series circuit is the first electricity
The output of pond module, since the voltage rating of single battery is 3V, thus the DC output voltage of the first battery module is 24V,
Again because the output end of series circuit is connect with the output end of the first DC/AC converter, thus the DC voltage of 24V can be turned
It is changed to the alternating voltage of 220V, the maintenance power supply for construction needs of substation can be met.
As shown in figure 3, the second battery module includes the ferric phosphate lithium cell group of four groups of series connections, four groups of LiFePO4s
Battery is connect after being connected in series with the output end of the second battery module.
In order to improve the reliability of ferric phosphate lithium cell group, each group of ferric phosphate lithium cell group includes two and is connected in parallel
The rated capacity of the ferric phosphate lithium cell of monomer, each monomer ferric phosphate lithium cell is 250Ah, and single battery voltage rating is
DC3V.Specifically, first group of ferric phosphate lithium cell is connected in parallel by single battery 21 and 31, second group of ferric phosphate lithium cell
Group is connected in parallel by single battery 22 and 23, third group ferric phosphate lithium cell be connected in parallel by single battery 23 and 33 and
At the 4th group of ferric phosphate lithium cell is connected in parallel by single battery 24 and 34.
Specifically, in order to realize the protection to ferric phosphate lithium cell group, which further includes the 5th breaker
RD30, the output end after four groups of ferric phosphate lithium cell groups are connected in series pass through the defeated of the 5th breaker RD30 and the second battery module
Outlet connection.More specifically, the cathode output end after four groups of ferric phosphate lithium cell groups are connected in series passes through the 5th breaker RD30
It is connect with the cathode output end of the second battery module.
Specifically, in order to enable the second battery module can export 220V AC voltage, which includes the
Two DC/AC converters 112, the 6th breaker RD32, the exchange accessory power outlet 109 of the 7th breaker RD31 and second, wherein second
DC/AC converter 112 is DC12V/AC220V converter, and the second AC socket 109 is that 220V exchanges accessory power outlet.Four groups of phosphoric acid
After lithium iron battery group is connected in series, anode passes through the electrode input end of the 6th breaker RD32 and the 2nd DC/AC converter 112
Connection, cathode are connect by the 7th breaker RD31 with the negative input of the 2nd DC/AC converter 112, and the 2nd DC/AC turns
The output end of parallel operation 112 is connect with the second exchange accessory power outlet 109.
Specifically, in order to realize the management to ferric phosphate lithium cell group, which further includes the second cell tube
Manage unit 113, the second current transformer 108, multiple 8th breakers, second switch 110, four groups of ferric phosphate lithium cell components
Do not connected by port C10, C11, C12, C13, C18 of breaker RD11, RD12, RD13, RD14, RD15 and battery management unit
It connects, the second battery management unit can show the cell voltage value of ferric phosphate lithium cell group, four groups of phosphoric acid by 9 cun of digital display screens
After lithium iron battery group is connected in series, anode is also connect with the second current transformer 108, and the second current transformer 108 will induction
Current value the second battery management unit 113 is uploaded to by cable C2-1 to C2-4, the second battery management unit 113 can pass through
9 cun of digital display screens show the current value of battery pack.The input terminal of 2nd DC/AC converter 112 passes through second switch 110 and the
Port C31, C32 of two battery management units 113 are connected, and utilize the direct current output of the ferric phosphate lithium cell group of four groups of series connections
DC voltage input is provided for the second battery management unit 113.
Wherein, in order to realize the control to the second battery module ac output voltage, which further includes
The output end of two controllable switches 111, the 2nd DC/AC converter 112 passes through the second controllable switch 111 and the second AC socket
109 input terminal connection, the control terminal of second controllable switch 111 are connect with the second battery management unit 113.
After second battery module is by the way that four groups of ferric phosphate lithium cells are connected in series, the output of series circuit passes through second
Breaker is connect with the output end of the second battery module, since the voltage rating of single battery is 3V, thus the first battery module
DC output voltage be 12V, and because the output end of series circuit is connect with the output end of the 2nd DC/AC converter, because
And the DC voltage of 12V can be converted to the alternating voltage of 220V, the maintenance power supply for construction needs of substation can be met.
It specifically, in the actual use process, can be by the output end in Fig. 1 through molded-case switch DC440V/240A direct current
Molded-case switch, which is drawn, is connected to High-current output plug-in unit, and in the case where closing the switch, this plug-in unit can be external direct current by high current
Load supplying then can be used as emergency when DC110V output voltage is accessed transformer station direct current system by High-current output plug-in unit
Power supply ensures the normal table output of direct current system bus, avoids transforming plant DC bus loss of pressure risk.
The substation batteries device for quickly accessing direct current system of the embodiment of the present invention, in the first battery module and the second electricity
It is all made of 2 monomer ferric phosphate lithium cells in the module of pond to be connected in parallel to be formed, the exportable 24V DC voltage of the first battery module,
Exportable 110V DC voltage is connected in series in 4 the first battery modules and the second battery module, which passes through big electricity
It flows output inserter and direct current 110V output voltage is accessed into transformer station direct current system, can be used as emergency power supply and ensure direct current system bus
Normal table output, avoid transforming plant DC bus loss of pressure dangerous；Furthermore the first battery module and the second battery module
220V AC voltage is exported, which can meet the emergence power needs of most transformer station direct current systems, dress of the invention
Set handling process and only need 2 people, carrying or installing can avoid battery short circuit, open circuit risk, in 5 minutes can access system, therefore
The achievement systematic procedure that puts into operation is simply quick, overcomes the battery short circuit that tradition is carried and Installation Modes easily cause, open circuit risk,
Direct current system bus loss of pressure resulting from and person electric shock risk are avoided, has ensured the reliability service of substation's stored energy source.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (10)
1. a kind of substation batteries device for quickly accessing direct current system characterized by comprising
Four the first battery modules, first battery module export 24V DC voltage；
One the second battery module, second battery module export 12V DC voltage；
The DC output end of above-mentioned 5 battery modules is connect after being connected in series with 110V DC bus；Wherein,
First battery module include eight groups of ferric phosphate lithium cell groups, eight groups of ferric phosphate lithium cell groups be sequentially connected in series after with
The DC output end of first battery module connects, and exports 24V DC voltage；
Second battery module includes ferric phosphate lithium cell group described in four groups, and four groups of ferric phosphate lithium cell groups are sequentially connected in series
It is connect afterwards with the DC output end of the second battery module, exports 12V DC voltage.
2. the apparatus according to claim 1, it is characterised in that:
First battery module further includes the first breaker, and eight groups of ferric phosphate lithium cell groups pass through described after being connected in series
First breaker is connect with the DC output end of first battery module.
3. the apparatus of claim 2, it is characterised in that:
The ferric phosphate lithium cell group includes at least two monomer ferric phosphate lithium cells being connected in parallel with each other, the monomer phosphoric acid
The rated output voltage of lithium iron battery is direct current 3V.
4. the apparatus of claim 2, which is characterized in that first battery module further includes the first DC/AC conversion
Device, the second breaker, third breaker, the first exchange accessory power outlet, the first DC/AC converter are used for direct current 24V electricity
Pressure is converted to 220V AC voltage；Wherein
Positive output end after eight groups of ferric phosphate lithium cell groups are connected in series is turned by the second breaker and the first DC/AC
The positive input terminal of parallel operation connects, and negative output terminal is connected by the negative input end of third breaker and the first DC/AC converter
It connects, the output end of the first DC/AC converter is connect with the first exchange accessory power outlet.
5. device according to claim 4, it is characterised in that:
First battery module further include the first current transformer, the first battery management unit and multiple 4th breakers,
First switch, DC/DC converter, the DC/DC converter are used to 24V DC voltage being converted to 12V DC voltage,
Eight groups of ferric phosphate lithium cell groups are connect after being connected in series with first current transformer, first Current Mutual Inductance
Device sends the cell current value to first battery management unit by cable,
Eight groups of ferric phosphate lithium cell groups also pass through the input of the first switch and the DC/DC converter after being connected in series
End connection, the output end of the DC/DC converter are connect with the direct-flow input end of first battery management unit,
The each group of ferric phosphate lithium cell also passes through corresponding 4th breaker and connect with the first battery management unit.
6. device according to claim 5, it is characterised in that:
First battery module further includes the first controllable switch, and the output end of the first DC/AC converter passes through described the
One controllable switch is connect with the first exchange accessory power outlet, the control terminal of the controllable switch and the first battery management list
Member connection.
7. the apparatus according to claim 1, it is characterised in that:
Second battery module further includes the 5th breaker, and four groups of ferric phosphate lithium cell groups pass through described after being connected in series
5th breaker is connect with the DC output end of second battery module.
8. device according to claim 7, it is characterised in that:
Second battery module is inserted including the 2nd DC/AC converter, the 6th breaker, the 7th breaker, the second exchange output
Seat, the 2nd DC/AC converter are used to 12V DC voltage being converted to 220V AC voltage,
After four groups of ferric phosphate lithium cell groups are connected in series, anode passes through the 6th breaker and the 2nd DC/AC
The electrode input end of converter connects, and cathode is defeated by the cathode of the 7th breaker and the 2nd DC/AC converter
Enter end connection, the output end of the 2nd DC/AC converter is connect with the second exchange accessory power outlet.
9. device according to claim 8, it is characterised in that:
Second battery module further includes the second current transformer, the second battery management unit, multiple 8th breakers,
Four groups of ferric phosphate lithium cell groups are connect after being connected in series with second current transformer, second Current Mutual Inductance
Device sends cell current value to second battery management unit by cable,
The each group of ferric phosphate lithium cell also passes through corresponding 8th breaker and connect with the second battery management unit,
The input terminal of the 2nd DC/AC converter also passes through second switch and the direct current of second battery management unit inputs
End connection.
10. device according to claim 9, it is characterised in that:
Second battery module further includes the second controllable switch, and the output end of the 2nd DC/AC converter passes through described the
Two controllable switches are connect with the second exchange accessory power outlet, the control terminal of the controllable switch and the second battery management list
Member connection.
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| CN201811070294.XA CN109245274A (en) | 2018-09-13 | 2018-09-13 | Transformer substation emergency battery device capable of being rapidly connected into direct current system |
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| CN201811070294.XA CN109245274A (en) | 2018-09-13 | 2018-09-13 | Transformer substation emergency battery device capable of being rapidly connected into direct current system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116325281A (en) * | 2020-10-29 | 2023-06-23 | 本田技研工业株式会社 | Accumulator unit |
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