CN201805036U - Circuit preventing direct current arc discharge - Google Patents
Circuit preventing direct current arc discharge Download PDFInfo
- Publication number
- CN201805036U CN201805036U CN201020212259XU CN201020212259U CN201805036U CN 201805036 U CN201805036 U CN 201805036U CN 201020212259X U CN201020212259X U CN 201020212259XU CN 201020212259 U CN201020212259 U CN 201020212259U CN 201805036 U CN201805036 U CN 201805036U
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- Prior art keywords
- contact
- connector
- direct current
- arc discharge
- circuit
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- 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.)
- Expired - Lifetime
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- 238000010891 electric arc Methods 0.000 title claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a circuit preventing direct current arc discharge, which comprises a connector contactor (1), a main contact (2) and an auxiliary contact (3). The main contact (2) and the auxiliary contact (3) are connected through a capacitive absorption circuit, and the auxiliary contact (3) is arranged at the site where the connector contactor (1) surely contacts before contacting with the main contact (2). The capacitive absorption circuit comprises a capacitor (5) and a resistor (7). The circuit preventing direct current arc discharge provided by the utility model has simple structure, less circuit link and low cost, and is convenient for use.
Description
Technical field
The utility model relates to a kind of anti-direct current arc discharge circuit.
Background technology
When two contact charged separation of connector, as long as voltage is greater than 10～20V in the circuit.Electric current is greater than 80～100mA.Between dynamic and static contact just electric arc may appear.Though this moment, contact separated, but electric current continues circulation by the electric arc between contact.
The generating period variation in time of the current instantaneous value of alternating current, therefore at the zero crossing of electric current, electric current becomes 0, and electric arc can disappear automatically.But therefore direct current, after electric arc produces, is difficult to extinguishing arc because there is not current zero-crossing point; Until two contacts of connector are separated into enough distances, electric arc could disappear automatically.
Electric arc is the free gas of high temperature high conductivity, and it not only has very big destruction to contact, may the person or the equipment of its periphery be caused serious injury simultaneously, even causes serious disaster such as fire.
Most solar grid-connected inverter in actual applications, general DC input voitage is all greatly between 100～1000V, electric current, voltage are all much larger than the generation condition of electric arc.During the installation of combining inverter, operation, maintenance, may need band to carry and cut off a direct current, therefore, must increase a dc switch at the direct current input side of combining inverter with band year switching capability.
Because the particularity of direct current arc extinguishing, the switch of direct current is very expensive in the market, and the dc switch of a 20A/1000VDC is greatly about about 1000 yuans.
The utility model content
The purpose of this utility model is: a kind of anti-direct current arc discharge circuit is provided, and it is simple in structure, and is easy to use, and the circuit link is few, and cost is low.
The technical scheme of the utility model circuit is: a kind of anti-direct current arc discharge circuit, and it comprises connector contact, main contacts, auxiliary contact, the capacitive absorption circuit that passes through between described main contacts and the auxiliary contact connects.
Described auxiliary contact are arranged at connector contact and contact with main contacts on the position that must touch before.
Described capacitive absorbs circuit and includes electric capacity.
Described capacitive absorbs circuit and includes resistance.
Traditional connector is the form of two contacts, and this programme is by auxiliary contact of increase, and corresponding capacitive absorbs circuit, the realization extinguishing arc.Its key is: in the time of two contact separation of connector, the electric current of connector forwards the auxiliary current path of capacitive to, and the node of guaranteeing connector is in the moment that disconnects, and the condition that electric current and voltage all produce less than electric arc realizes extinguishing arc; And, when auxiliary contact separate, there is not electric current to exist yet, therefore, can not produce electric arc yet.
The utility model has the advantages that: the utility model implementation method is simple, and the circuit link is few, and cost is low.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is application schematic diagram of the present utility model (having represented structure of the present utility model in the empty frame);
Fig. 2 is the voltage that flows through when unpluging connector on the connector, the working waveform figure of electric current.
Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 are the utility model connector operation principle key diagram in the process that disconnects.
Wherein: 1 contact; 2 main contactss; 3 auxiliary contact; 5 electric capacity; Load R
L7 resistance; Voltage waveform between 10 major-minor contacts; Current waveform on 11 connectors; 12 load R
LCurrent waveform.
Embodiment
Embodiment:
As shown in Figure 1, a kind of anti-direct current arc discharge circuit, it comprises connector contact 1, main contacts 2, auxiliary contact 3, the capacitive absorption circuit that passes through between described main contacts 2 and the auxiliary contact 3 connects.Auxiliary contact 3 be arranged at connector contact 1 before contacting with main contacts 2 must position contacting on.Capacitive absorbs circuit and includes electric capacity 5, resistance 7.
Traditional connector is the form of two contacts, and this programme is by auxiliary contact 3 of increase, and corresponding capacitive absorbs circuit, the realization extinguishing arc.Its key is: when the contact 1 of connector separates with main contacts 2, the electric current of connector forwards capacitive to and absorbs circuit (auxiliary current path), the node of guaranteeing connector is in the moment that disconnects, and the condition that electric current and voltage all produce less than electric arc realizes extinguishing arc; And, when separating, there is not electric current to exist with auxiliary contact 3 yet, therefore, can not produce electric arc yet.
Fig. 2 is the voltage that flows through when unpluging connector on the connector, the working waveform figure of electric current.When the contact 1 that unplugs connector leaves main contacts 2, the voltage of connector rises to peak value VCC according to certain slope, the electric current of connector absorbs circuit (RC subsidiary loop) by capacitive and drops to zero gradually, and this moment, contact 1 did not also separate with auxiliary contact 3.
Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 are connector operation principle key diagram in the process that disconnects, and solid arrow is the contact moving direction, and current direction is shown in dotted arrow.
As shown in Figure 3: during circuit turn-on, the current direction that flows through connector is shown in dotted arrow;
As shown in Figure 4: when unpluging connector, when the head end of connector contact 1 separates with main contacts 2, the electric current of connector forwards capacitive to and absorbs circuit (RC auxiliary current path), this moment, current direction was shown in the dotted arrow among the figure, guarantee the head end of connector contact 1 and the moment that main contacts 2 disconnects, the condition that electric current and voltage all produce less than electric arc, and then the arcing problem when realizing preventing to turn-off;
As shown in Figure 5: in unpluging the process of connector, the head end of connector contact 1 is not also with before auxiliary contact 3 separate, electric capacity 5 make the electric current that absorbs circuit (RC auxiliary current path) by capacitive drop to zero gradually every straight function, prepare for the zero current of realizing contact 1 and auxiliary contact 3 disconnects;
As shown in Figure 6: when the head end of connector contact 1 was about to separate with auxiliary contact 3, the head end and the electric current between the auxiliary contact 3 that flow through contact 1 had reduced to zero, so connector the arcing phenomenon can not occur again;
As shown in Figure 7: after the head end of connector contact 1 leaves auxiliary contact 3, arrive initial bit, form certain physical with auxiliary contact 3 and isolate.
Should be pointed out that for the utility model also to have the embodiment of multiple conversion and remodeling, be not limited to the specific embodiment of above-mentioned execution mode through proving absolutely.The foregoing description is as just explanation of the present utility model, rather than restriction.In a word, protection range of the present utility model should comprise those conspicuous to those skilled in the art conversion or substitute and remodeling.
Claims (4)
1. anti-direct current arc discharge circuit, it is characterized in that: it comprises connector contact (1), main contacts (2), auxiliary contact (3), the capacitive of passing through between described main contacts (2) and the auxiliary contact (3) absorbs circuit and connects.
2. anti-direct current arc discharge circuit according to claim 1 is characterized in that: described auxiliary contact (3) are arranged at connector contact (1) and contact with main contacts (2) on the position that must touch before.
3. anti-direct current arc discharge circuit according to claim 1 is characterized in that: described capacitive absorbs circuit and includes electric capacity (5).
4. anti-direct current arc discharge circuit according to claim 1 is characterized in that: described capacitive absorbs circuit and includes resistance (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020212259XU CN201805036U (en) | 2010-06-02 | 2010-06-02 | Circuit preventing direct current arc discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020212259XU CN201805036U (en) | 2010-06-02 | 2010-06-02 | Circuit preventing direct current arc discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201805036U true CN201805036U (en) | 2011-04-20 |
Family
ID=43874538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020212259XU Expired - Lifetime CN201805036U (en) | 2010-06-02 | 2010-06-02 | Circuit preventing direct current arc discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201805036U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895028A (en) * | 2010-06-02 | 2010-11-24 | 江苏艾索新能源股份有限公司 | Anti-direct current arc discharge circuit |
| CN105453345A (en) * | 2013-08-23 | 2016-03-30 | 富士通电子零件有限公司 | Connector |
| US9666977B2 (en) | 2015-07-29 | 2017-05-30 | Abb Schweiz Ag | Direct current socket with direct current arc protection |
| CN107924782A (en) * | 2015-09-04 | 2018-04-17 | 索尼公司 | Switching device, moving body, electric power supply system and method for switching |
| US10483693B2 (en) | 2015-09-24 | 2019-11-19 | Abb Schweiz Ag | Sliding contact assembly for accelerating relative separation speed between plug contacts and socket outlet contacts |
-
2010
- 2010-06-02 CN CN201020212259XU patent/CN201805036U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895028A (en) * | 2010-06-02 | 2010-11-24 | 江苏艾索新能源股份有限公司 | Anti-direct current arc discharge circuit |
| CN105453345A (en) * | 2013-08-23 | 2016-03-30 | 富士通电子零件有限公司 | Connector |
| EP3038216A4 (en) * | 2013-08-23 | 2017-03-08 | Fujitsu Component Limited | Connector |
| US9774145B2 (en) | 2013-08-23 | 2017-09-26 | Fujitsu Component Limited | Connector |
| TWI624120B (en) * | 2013-08-23 | 2018-05-11 | 富士通電子零件有限公司 | Connector |
| CN105453345B (en) * | 2013-08-23 | 2018-06-22 | 富士通电子零件有限公司 | Connector |
| US10020620B2 (en) | 2013-08-23 | 2018-07-10 | Fujitsu Component Limited | Connector |
| US9666977B2 (en) | 2015-07-29 | 2017-05-30 | Abb Schweiz Ag | Direct current socket with direct current arc protection |
| CN107924782A (en) * | 2015-09-04 | 2018-04-17 | 索尼公司 | Switching device, moving body, electric power supply system and method for switching |
| CN107924782B (en) * | 2015-09-04 | 2019-09-10 | 索尼公司 | Switching device, moving body, electric power supply system and method for switching |
| US10483693B2 (en) | 2015-09-24 | 2019-11-19 | Abb Schweiz Ag | Sliding contact assembly for accelerating relative separation speed between plug contacts and socket outlet contacts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Patentee after: Jiangsu Zeversolar New Energy Co., Ltd. Address before: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Patentee before: Jiangsu Aisuo New Energy Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ZOF NEW ENERGY CO., LTD. Effective date: 20140318 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140318 Address after: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Patentee after: JIANGSU ZEVERSOLAR NEW ENERGY CO., LTD. Patentee after: Jiangsu Zof New Energy Co., Ltd. Address before: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Patentee before: Jiangsu Zeversolar New Energy Co., Ltd. |
|
| CP03 | Change of name, title or address |
Address after: Kolding road high tech Zone of Suzhou City, Jiangsu Province, No. 78 215011 Co-patentee after: Aisima new energy technology (Yangzhong) Co., Ltd. Patentee after: Aisima new energy technology (Jiangsu) Co., Ltd. Address before: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Co-patentee before: Jiangsu Zof New Energy Co., Ltd. Patentee before: JIANGSU ZEVERSOLAR NEW ENERGY CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215000 Factory Building No. 1989 Xiangyang Road, Suzhou High-tech Zone, Jiangsu Province Co-patentee after: Aishiwei New Energy Technology (Yangzhong) Co., Ltd. Patentee after: Aishiwei New Energy Technology (Jiangsu) Co., Ltd. Address before: 215011 No. 78 Keling Road, Suzhou High-tech Zone, Jiangsu Province Co-patentee before: Aisima new energy technology (Yangzhong) Co., Ltd. Patentee before: Aisima new energy technology (Jiangsu) Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |