CN205583809U - Direct current system charging loops - Google Patents
Direct current system charging loops Download PDFInfo
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- CN205583809U CN205583809U CN201620219982.8U CN201620219982U CN205583809U CN 205583809 U CN205583809 U CN 205583809U CN 201620219982 U CN201620219982 U CN 201620219982U CN 205583809 U CN205583809 U CN 205583809U
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- 238000000034 method Methods 0.000 claims description 25
- 239000003054 catalyst Substances 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 15
- 230000002159 abnormal effect Effects 0.000 description 7
- 230000006837 decompression Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a direct current system charging loops, including NULL I, NULL II, open in vain, alternating -current charging generating line and two sets of invertion power supply modules, the invertion power supply module of every group includes the more than one invertion power supply module, cuts apart into two sections with the alternating -current charging generating line, two sections alternating -current charging generating lines I, adopts parallelly connected contactor KM3 contact connection between II, ac bus I directly catches a set of invertion power supply module, the II invertion power supply modules of directly catching another group of ac bus. The utility model discloses under " automatic mode ", there are two way NULL to supply the work of invertion power supply module, the return circuit is unusual as if switching over, NULL is unusual even certain is gone the same way, also can guarantee normal NULL branch road and supply with the invertion power supply module that corresponds and normally work, guarantees that direct current busbar voltage can not lose, makes the inferior charged state that is in all the time of direct current electric power storage.
Description
Technical field
This utility model relates to a kind of straight-flow system AC charging switching circuit, and particularly a kind of straight-flow system is charged back
Road.
Background technology
The typical practice of straight-flow system charge circuit is by automatic switching control equipment, two-way alternating current power supply to be introduced a road hand over
Stream carries out being reverse into direct current.
Existing straight-flow system charge circuit typical case design is as it is shown in figure 1, two-way exchange is coupled with handing over after being opened by sky
Stream automatic power-supply switch input I and input II.When power change-over switch is placed in " input I " position, conducting input I and output
Circuit, cuts off input II and output circuit, and exchange is by first via Alternating Current Power Supply.Power change-over switch is placed in " input II " position
Time, logical input II and output circuit, cut off input I and output circuit, exchange is by the second road Alternating Current Power Supply.Power change-over switch is put
When " automatically ", when automatic power-supply switch detects that input I has electricity, conducting input I and output circuit, cut off input II
And output circuit, exchange is by first via Alternating Current Power Supply；Input I dead electricity, and input II voltage normal time, automatically switch to input
II power supply, conducting input II and output circuit, cut off input I and output circuit, exchange is by the second road Alternating Current Power Supply.This technical side
Case, when power change-over switch, power supply handover module or power transfer relay damage, automatic switching function will be lost, exchange
Power supply can not automatically switch.Assume that power change-over switch is placed in " automatically " position, if switching handle damages or power supply switching module
Function is damaged, and device cannot alert, if working power inputs I dead electricity, owing to switching circuit damages, automatic switching function is lost
Losing, even if input II power supply is normal, working power also cannot automatically switch to input II, and needing armrest to move could switch.For nothing
Transformer station that people is on duty or distribution substation, ac charging power supply is lost and be will result in direct-flow storage battery and discharge for a long time and accelerate accumulator
Scrap；If accumulator loop is damaged before this, more in addition charge power supply is lost, and will result in Dan Chongdanxu transformer station and entirely stands erectly loss
Pressure risk.
Utility model content
In place of the purpose of this utility model is to overcome the deficiencies in the prior art, and provide one can avoid AC charging electricity
Source loss causes direct-flow storage battery to discharge for a long time, accelerates a kind of straight-flow system charge circuit scrapped of accumulator.
A kind of straight-flow system charge circuit, includes exchange input I, exchange input II, sky are opened, AC charging bus and two
The Inverter of group, the Inverter often organized includes more than one Inverter, and its result is characterized by:
AC charging bus is divided into two sections, uses parallel contactor KM3 contact to connect between two sections of AC charging buses I, II, hand over
Stream input I connects sky and opens the upper end of Q1, and sky is opened and terminated to catalyst KM1 under Q1, and alternating current power supply is direct through the normal opened contact of KM1
It is connected with ac bus I, the ac bus I the most then Inverter of a group, a termination of catalyst KM1 actuating coil
Exchange input I sky and open Q1 lower end A phase, the other end of actuating coil switchs 1-2 contact and the friendship of QK by working method switching
Stream input zero line is connected；The A phase of exchange input I is also by the 7-8 contact on working method switching switch QK and KM3 actuating coil
Connect, it is ensured that when working method switching switch QK switches to " I female work " mode, the equal action of catalyst KM1 and KM3, two groups are filled
Electricity module the most normally works, and exchange input II connects sky and opens the upper end of Q2, and sky is opened and terminated to catalyst KM2, alternating current power supply under Q2
Normal opened contact through KM2 is directly connected with ac bus II, the Inverter of ac bus II the most then another group,
One end of catalyst KM2 actuating coil then exchanges input II sky and opens Q2 lower end A phase, and the other end of actuating coil is by work side
The 3-4 contact of formula switching switch QK is connected with exchanging input zero line；The A phase of exchange input II is also by working method switching switch
The 9-10 contact of QK is connected with KM3 actuating coil, it is ensured that when working method switching switch QK switches to " II female work " mode,
The equal action of KM2 and KM3, two groups of charging modules the most normally work, and exchange input simultaneously I inputs through normally closed contact, the exchange of KM2
II is connected through the normally closed contact of KM1 and after connecing with the 5-6 contact of QK, then is connected with the actuating coil of paratactic contact device KM3,
The other end of KM3 actuating coil is connected with zero line, and AC charging bus I, II is connected by the normally closed contact of KM3, it is ensured that certainly
Under flowing mode, arbitrary power loss, all can control to start KM3 action, by two sections through its normally closed contact by another input voltage
AC charging bus also connects, it is ensured that all charging modules normally work.
This utility model changes original ac bus being connected with power module direct current and only has one group, any working method
Only one group exchange inputs the power supply to inverter.Circuit after improvement, be connected ac bus with Inverter direct current
Being divided into two sections, under automated manner, two sections of ac bus divide row work, exchange input I work with exchanging input II, respectively simultaneously
Two sections of ac bus are powered respectively.This utility model adds parallel contactor KM3, normal in only one tunnel exchange input
Time, catalyst is by two sections of ac bus parallel connections in parallel.Three kinds of working methods of the starting-up later time of parallel contactor KM3.?
Under " automated manner ", when exchange input I is abnormal, normal power source exchange input II is opened through 5-6 contact, the normally closed contact of KM1 of QK
Dynamic KM3；When exchange input II is abnormal, normal power source exchange input I starts KM3 through the 5-6 contact of QK, the normally closed contact of KM2.?
Under " ac bus work " working method, normal power source exchange input I starts KM3 through the 7-8 contact of QK.At " ac bus II
Work " under working method, normal power source exchange input II starts KM3 through the 9-10 contact of QK.Guarantee under any working method,
All Inverters all can normally work.
AC charging bus I, II has been respectively mounted monitoring voltage relay Y1 and Y2.
When a certain charge power supply decompression, warning signal can be sent and process in time.
In sum, this utility model following advantage compared to existing technology:
1., under " automated manner ", there is two-way exchange input to work for Inverter, if switching circuit is abnormal, even if
The exchange input of a certain road is abnormal, also ensures that the normal Inverter exchanging input branch road supply corresponding normally works,
Guaranteeing that DC bus-bar voltage will not be lost, make direct current electric power storage time be in charged state all the time, even if battery damage, a certain road is handed over
When stream input is abnormal, dc bus still can be properly functioning, reduces full station and loses the risk of DC source.Only damage in accumulator
Bad, just can cause, under two-way exchange input abnormal conditions, stream loss of power of entirely standing erectly.
2. the Starting mode of parallel contactor KM3, by switching and the normally closed contact of KM1, KM2 of QK, can realize four kinds
Normally start under working method, it is ensured that when two-way exchange input normally works, ac bus I, II is separately operable, and hands on arbitrary road
When stream input is abnormal, KM3 energy auto-action, ac bus I, II is in parallel, it is ensured that DC bus-bar voltage not decompression.
3. on ac bus I, II, it has been respectively mounted monitoring voltage relay Y1 and Y2, in a certain charge power supply decompression
Time, warning signal can be sent and process in time.
4. the design of this circuit theory is simple, can encapsulate and realize modularized production, it is possible to be applicable to on-the-spot used equipment loop
Transformation.
Accompanying drawing explanation
Fig. 1 is prior art straight-flow system charge circuit figure.
Fig. 2 is this utility model embodiment straight-flow system charge circuit figure.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is described in more detail.
Embodiment 1
A kind of straight-flow system charge circuit, exchange input I (1A, 1B, 1C) connects sky and opens the upper end of Q1, and sky opens the lower termination of Q1
To catalyst KM1, opened the input that can cut off exchange input by end sky；Alternating current power supply directly and is handed over through the normal opened contact of KM1
Stream bus I is connected, ac bus I the most then one group power module (such as the module 1 in Fig. 2, module 2, can be according to actual need
Increase and decrease), one end of catalyst KM1 actuating coil then exchanges input I sky and opens Q1 lower end A phase, and the other end of actuating coil leads to
The 1-2 contact crossing working method switching switch QK is connected with exchanging input zero line；When so exchange input I has electricity, it is ensured that contact
Device KM1 just action, its normal opened contact closes, and alternating current pressure energy is directly inputted to the bus that charges, when exchange input I is without electricity, contact
Device KM1 is failure to actuate, and its normal opened contact disconnects, and prevents from powering.A phase of exchange input I is also by the 7-8 contact of QK1 and KM3 work
Make coil to connect, it is ensured that when QK switches to " mother's I work " mode, the equal action of KM1 and KM3, four charging modules normally work.Hand over
Stream input II (2A, 2B, 2C) connects sky and opens the upper end of Q2, and sky is opened and terminated to catalyst KM2 under Q2, is opened by end sky and can cut off friendship
The input of stream input；Alternating current power supply directly joins with AC charging II parent phase through the normal opened contact of KM2, and AC charging II is female directly
Then the power module (such as the module 3 in Fig. 2, module 4, can increase and decrease according to actual needs) of a group, catalyst KM2 actuating coil
One end then exchange input II sky open Q2 lower end A phase, the other end of actuating coil by working method switching switch QK 3-4
Contact is connected with exchanging input zero line；When so exchange input II has electricity, it is ensured that catalyst KM1 just action, its normal opened contact closes
Closing, alternating current pressure energy is directly inputted to the bus that charges, and when exchange input II is without electricity, catalyst KM2 is failure to actuate, and its normal opened contact breaks
Open, prevent from powering.The A phase of exchange input II is connected with KM3 actuating coil also by the 9-10 contact of QK1, it is ensured that QK switches
During to " mother's I work " mode, the equal action of KM2 and KM3, four charging modules normally work.Exchange input I simultaneously is through KM2's
Normally closed contact, exchange input II are connected through the normally closed contact of KM1 and after connecing with the 5-6 contact of QK, then with paratactic contact device KM3
Actuating coil be connected, another section of KM3 actuating coil is connected with zero line, and AC charging bus is by the normally closed contact phase of KM3
Even, it is ensured that under automated manner, arbitrary power loss, all can control to start KM3 through its normally closed contact by another input voltage
Action, by two sections of AC charging buses and connect, it is ensured that all charging modules normally work.The friendship being joined directly together with charging module
Stream bus is divided into two sections, and I is female for module 1,2, and II is female for module 3,4, catalyst KM3 in parallel between I, II female alternating current power supply
Contact connects.The working method of this design drawing has three kinds: I female work, II female work, automated manner.Specific works principle is as follows:
This motion design drawing is as in figure 2 it is shown, be divided into two sections by the ac bus being joined directly together with charging module, and I is female for module 1,2,
II is female for module 3,4, and between I, II female alternating current power supply, catalyst KM3 contact connects in parallel.The working method of this design drawing has
Three kinds: I female work, II female work, automated manner.Specific works principle is as follows:
Being operated in " automated manner " time normal, QK contact 1-2,3-4,5-6 conducting during automated manner, 7-8,9-10 disconnect；
Exchange input I is normal, then KM1 action, and exchange input I is incorporated into I female power supply, and power module 1,2 normally works；Exchange input
II is normal, then KM2 action, and exchange input II is incorporated into II female power supply, and power module 3,4 normally works；Exchange input I and friendship
When stream input II is all normal, the normally closed contact of KM1 and KM2 disconnects, and parallel contactor KM3 is failure to actuate, four Inverters
All can live line work；Normal in exchange input I, during exchange input II dead electricity, KM2 dead electricity, the normal opened contact of KM2 disconnects, and II is female
The connection disconnected and exchange input II, the normally closed contact Guan Bi of KM2, by exchange input I power initiation KM3 catalyst, KM3 is normal
Opening junction closure, get in touch with circuit closed between I mother and II mother, four Inverters are by exchanging input I power supply；In exchange input
II is normal, during exchange input I dead electricity, and KM1 dead electricity, I mother is disconnected and the connection exchanging input I, the normally closed contact Guan Bi of KM1,
By exchange input II power initiation KM3 catalyst, KM3 normal opened contact closes, contact circuit closed between I mother and II mother, four
Inverter is by exchanging input II power supply.
If exchange input II loop due to job demand be manually switched to I female work time, QK is switched to " I female work ",
QK contact 1-2,7-8 turn on, and 3-4,5-6,9-10 disconnect, KM1 and KM3 is charged, and I, II female alternating voltage is by exchanging input I confession
Electricity, four equal live line work of Inverter.
If exchange input I loop due to job demand be manually switched to II female work time, QK is switched to " II female work ",
QK contact 3-4,9-10 turn on, and 1-2,5-6,7-8 disconnect, KM1 and KM3 is charged, and I, II female alternating voltage is by exchanging input II confession
Electricity, four equal live line work of Inverter.
The not described part of the present embodiment is same as the prior art.
Claims (2)
1. a straight-flow system charge circuit, includes exchange input I, exchange input II, sky are opened, AC charging bus and two groups
Inverter, the Inverter often organized includes more than one Inverter, it is characterised in that: will exchange
Charging bus is divided into two sections, uses parallel contactor KM3 contact to connect between two sections of AC charging buses I, II, exchange input
I connects sky opens the upper end of Q1, and sky is opened and terminated to catalyst KM1 under Q1, alternating current power supply through KM1 normal opened contact directly with exchange
Bus I is connected, and the ac bus I the most then Inverter of a group, one end of catalyst KM1 actuating coil then exchanges
Inputting I sky and open Q1 lower end A phase, the other end of actuating coil is switched the 1-2 contact switching QK and exchanges input by working method
Zero line is connected；The A phase of exchange input I is connected with KM3 actuating coil also by the 7-8 contact on working method switching switch QK,
Guarantee that when working method switching switch QK switches to I female working method, the equal action of catalyst KM1 and KM3, two groups of charging modules are equal
Normal work, exchange input II connects sky and opens the upper end of Q2, and sky is opened and terminated to catalyst KM2 under Q2, and alternating current power supply is through KM2's
Normal opened contact is directly connected with ac bus II, the Inverter of ac bus II the most then another group, catalyst KM2
One end of actuating coil then exchanges input II sky and opens Q2 lower end A phase, and the other end of actuating coil is opened by working method switching
The 3-4 contact closing QK is connected with exchanging input zero line；The A phase of exchange input II is also by the 9-10 of working method switching switch QK
Contact is connected with KM3 actuating coil, it is ensured that when working method switching switch QK switches to II female working method, KM2 and KM3 is the most dynamic
Making, two groups of charging modules the most normally work, and exchange input simultaneously I inputs II through KM1's through normally closed contact, the exchange of KM2
Normally closed contact is also connected with the 5-6 contact of QK after connecing, then is connected with the actuating coil of paratactic contact device KM3, KM3 actuating coil
The other end is connected with zero line, and AC charging bus I, II is connected by the normally closed contact of KM3, it is ensured that under automated manner, arbitrary
Power loss, all can control to start KM3 action by another input voltage through its normally closed contact, by two sections of AC charging buses also
Connect, it is ensured that all charging modules normally work.
Straight-flow system charge circuit the most according to claim 1, it is characterised in that: on AC charging bus I, II respectively
It is mounted with monitoring voltage relay Y1 and Y2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620219982.8U CN205583809U (en) | 2016-03-22 | 2016-03-22 | Direct current system charging loops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620219982.8U CN205583809U (en) | 2016-03-22 | 2016-03-22 | Direct current system charging loops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205583809U true CN205583809U (en) | 2016-09-14 |
Family
ID=56868759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620219982.8U Withdrawn - After Issue CN205583809U (en) | 2016-03-22 | 2016-03-22 | Direct current system charging loops |
Country Status (1)
| Country | Link |
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| CN (1) | CN205583809U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811563A (en) * | 2016-03-22 | 2016-07-27 | 国网福建省电力有限公司 | AC charging automatic switching circuit for DC system |
| CN110336316A (en) * | 2019-06-12 | 2019-10-15 | 科华恒盛股份有限公司 | Control method, control device and the terminal that UPS and machine counnter attack fill |
-
2016
- 2016-03-22 CN CN201620219982.8U patent/CN205583809U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811563A (en) * | 2016-03-22 | 2016-07-27 | 国网福建省电力有限公司 | AC charging automatic switching circuit for DC system |
| CN105811563B (en) * | 2016-03-22 | 2019-02-19 | 国网福建省电力有限公司 | Direct current system AC charging automatic switching loop |
| CN110336316A (en) * | 2019-06-12 | 2019-10-15 | 科华恒盛股份有限公司 | Control method, control device and the terminal that UPS and machine counnter attack fill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20190219 |