CN104952655B - A kind of nonpolarity arc quenching system of high-voltage DC contactor - Google Patents
A kind of nonpolarity arc quenching system of high-voltage DC contactor Download PDFInfo
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- CN104952655B CN104952655B CN201510377395.1A CN201510377395A CN104952655B CN 104952655 B CN104952655 B CN 104952655B CN 201510377395 A CN201510377395 A CN 201510377395A CN 104952655 B CN104952655 B CN 104952655B
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- contact
- permanent magnet
- stationary
- contactor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a kind of nonpolarity arc quenching system of high-voltage DC contactor, include contact chamber（4）, contact chamber（4）Interior bottom is provided with a movable contact（2）, top is provided with two stationary contacts（3）, stationary contact（3）Both sides are arranged with two permanent magnets in parallel respectively（1）, two stationary contacts（3）Phase the same side permanent magnet（1）Opposite polarity；Wherein same stationary contact（3）The permanent magnet of both sides（1）Between magnetic line of force direction perpendicular to movable contact（2）Moving direction, same stationary contact（3）The permanent magnet of both sides（1）Polarity it is identical.The present invention has that arc quenching effect is good, and it is high that contactor band carries the switching life-span, can be achieved nonpolarity arc extinguishing, and in the case of equivalent capability small volume beneficial effect.
Description
Technical field
The present invention relates to a kind of arc quenching system of high-voltage DC contactor, particularly a kind of high-voltage DC contactor is nonpolarity
Arc quenching system.
Background technology
At present, used in electric automobile, satellite, space station etc.（120~900）Vdc、（60~1000）More than A
DC power system, to reduce loss, provide higher power.By zero crossing institute of the direct current not as alternating current
That can not extinguish naturally, therefore in the case where volume, weight are limited, the band that lift high-voltage DC contactor carries switching capability,
Must just solve the arc extinguishing ability of its contact system.The arc extinguishing of existing conventional contact be mainly by lifting contact gap and
Pressure improves arc extinguishing ability, and its existing deficiency is：（120~900）Vdc、（60~1000）More than A high power load bar
Arc quenching effect is poor under part, and the band load switching life-span is low, and device volume is big, wastes installing space.
The content of the invention
It is an object of the present invention to provide a kind of nonpolarity arc quenching system of high-voltage DC contactor.The present invention has arc extinguishing
Effect is good, and band carries switching life-span height, and nonpolarity arc extinguishing can be achieved, and in the case of equivalent capability the characteristics of small volume.
The present invention realizes by the following method：A kind of nonpolarity arc quenching system of high-voltage DC contactor, includes contact chamber,
Bottom in contact chamber is provided with a movable contact, and top is provided with two stationary contacts, and stationary contact both sides are arranged with two in parallel respectively
Permanent magnet, the opposite polarity of the permanent magnet of phase the same side of two stationary contacts；Between the permanent magnet of wherein same stationary contact both sides
Magnetic line of force direction perpendicular to the moving direction of movable contact, the polarity of the permanent magnet of same stationary contact both sides is identical.
A kind of foregoing nonpolarity arc quenching system of high-voltage DC contactor, the lower surface of described permanent magnet is broken less than contact
The upper surface of movable contact when opening, the upper surface of permanent magnet is higher than the lower surface of stationary contact, less than the inner cavity top of contact chamber.
A kind of foregoing nonpolarity arc quenching system of high-voltage DC contactor, described contact chamber are close with metal sintering by ceramics
Envelope is formed, and permanent magnet is arranged on the outer wall of contact chamber.
Beneficial effects of the present invention：The present invention in movable contact and stationary contact both sides by setting permanent magnet, same stationary contact
The polarity of the permanent magnet of both sides is identical, and its vertical join line can be considered the magnetic line of force, and the moving direction of movable contact can be considered the side of electric arc
To according to left hand rule, electric arc moves after being acted in magnetic field by Lorentz force, direction and electric arc due to the magnetic line of force
Direction it is vertical, Lorentz force that now electric arc is subject to is maximum, and magnetic blow-out effect is best, and cooling velocity is fast after electric arc elongates, arc extinguishing
Reliably, arc quenching effect is good, and the band for improving contactor carries the switching life-span.Meanwhile the permanent magnet of two stationary contact homonymies of the invention
Opposite polarity so that the magnetic directions of different stationary contact present positions on the contrary, the electric arc between two stationary contacts in the same direction
It is mobile, when wherein one section of electric arc is moved among two stationary contacts by Lorentz force, electric arc by two opposite magnetic fields effect to
Move stationary contact both sides, it is therefore prevented that the electric arc between two stationary contacts and movable contact intersects, when the positive and negative polarity chron of Switching power, side
Remain to make two sections of electric arcs move in the same direction to opposite magnetic field, when wherein one section of electric arc is moved to two stationary contacts by Lorentz force
When among point, electric arc is moved by the effect of two opposite magnetic fields to stationary contact both sides, it is therefore prevented that between two stationary contacts and movable contact
Electric arc intersect, realize nonpolarity arc extinguishing.Furthermore because arc quenching effect of the present invention is good, it can reach in less space
Preferable arc quenching effect, the volume of device is reduced, has saved installing space.In addition, the lower surface of the permanent magnet of the present invention is low
The upper surface of movable contact when contact disconnects, the upper surface of permanent magnet is higher than the lower surface of stationary contact, less than the inner chamber of contact chamber
Top so that when contact disconnects, the whole electric arc formed between movable contact and stationary contact is all in magnetic field, and arc quenching effect is more
It is good；The permanent magnet of the present invention will not be polluted to contact chamber, ensure that on the housing outside contact chamber in process
Cleaning inside contact chamber, improve the reliability of contact.In summary, the present invention has arc quenching effect good, and band is carried and cut
Change the life-span height, can be achieved nonpolarity arc extinguishing, and in the case of equivalent capability small volume beneficial effect.
Experiment shows：In the case where slider material, contactor gap, contact force are constant, load capacity 60V/200A
Conventional contact, after increasing nonpolarity arc quenching system, load capacity reaches 300V/200A or 900V/100A, and conventional connects
Tentaculum can not then bear more than 120V high pressure completely.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Accompanying drawing 2 is the top view of accompanying drawing 1；
Accompanying drawing 3 is stereo-resolution figure of the invention；
The arc quenching principle schematic diagram of horizontal direction before accompanying drawing 4 changes for the load current polarity of the present invention；
The arc quenching principle schematic diagram of horizontal direction after accompanying drawing 5 changes for the load current polarity of the present invention；
Accompanying drawing 6 is the top view of accompanying drawing 4；
Accompanying drawing 7 is the top view of accompanying drawing 5.
Description of reference numerals：1- permanent magnets, 2- movable contacts, 3- stationary contacts, 4- contact chambers, 5- electric arcs one, 6- electric arcs two, 7-
Electric arc three, 8- electric arcs four.
Specific embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below to the specific reality of the present invention
The mode of applying is described in detail.But the invention can be embodied in many other ways as described herein, this area
Technical staff can do similar improvement in the case of without prejudice to intension of the present invention, therefore the present invention is not by following public specific
The limitation of implementation.
Embodiment
A kind of nonpolarity arc quenching system of high-voltage DC contactor, as illustrated in the accompanying drawings from 1 to 3, include contact chamber 4, contact chamber 4
Interior bottom is provided with a movable contact 2, and top is provided with two stationary contacts 3, and the both sides of stationary contact 3 are arranged with two permanent magnetism in parallel respectively
Body 1, the opposite polarity of the permanent magnet 1 of phase the same side of two stationary contacts 3；Between the permanent magnet 1 of the wherein same both sides of stationary contact 3
Magnetic line of force direction perpendicular to the moving direction of movable contact 2, the polarity of the permanent magnet 1 of the same both sides of stationary contact 3 is identical.
The upper surface of movable contact 2 when the lower surface of described permanent magnet 1 disconnects less than contact, the upper surface of permanent magnet 1 are high
In the lower surface of stationary contact 3, less than the inner cavity top of contact chamber 4.
Described contact chamber 4 is sealed to form by ceramics with metal sintering, and permanent magnet 1 is arranged on the outer wall of contact chamber 4.
The operation principle of the present invention：The magnetic line of force returns to S poles from permanent magnet N poles, and the electric arc during disjunction of contact is in macroscopic view
On can be understood as a bit of electric current that is flowed between movable contact 2 and stationary contact 3, according to left hand rule, electric arc is in magnetic field
Moved by Lorentz force effect；Because magnetic line of force direction is vertical with electric arc direction in the present invention, now magnetic blow-out effect is best,
Cooling velocity is fast after electric arc elongates, and arc extinguishing is reliable, improves arc quenching effect, and the band for extending contactor carries the switching life-span.Work
When, as shown in accompanying drawing 4 and accompanying drawing 6, now, the stationary contact 3 on the left side is negative pole, and the stationary contact 3 on the right is positive pole, and electric current is by the right
Stationary contact 3 pass through movable contact 2, then flowed out from the stationary contact 3 on the left side, the electric arc one between the stationary contact 3 and movable contact 2 on the left side
5 lateral movements to the left in the presence of the magnetic field of left set permanent magnet 1, until between leaving dynamic and static contact, then extinguish；Electric arc 26
Moved by the effect in the magnetic field of right group of permanent magnet 1 to the direction of left set stationary contact 3, move to two groups of stationary contacts 3 it is middle when by left set
The effect in the magnetic field opposite with right group of permanent magnet 1, moves to the front and rear sides of stationary contact 3, makes two groups of contacts caused by permanent magnet 1
Between caused electric arc be not in cross-conduction situation, arc extinguishing is reliable.Similarly, as shown in accompanying drawing 5 and accompanying drawing 7, the now left side
Stationary contact 3 be positive pole, the stationary contact 3 on the right is negative pole, and electric current passes through movable contact 2 by the stationary contact 3 on the left side, then from the right
Stationary contact 3 flows out, the electric arc 48 between the stationary contact 3 and movable contact 2 on the right in the presence of the magnetic field of right group of permanent magnet 1 to
Right side is moved, until between leaving dynamic and static contact, is then extinguished；Electric arc 37 by the magnetic field of left set permanent magnet 1 effect to the right
The motion of group stationary contact 3 direction, move to two groups of stationary contacts 3 it is middle when by opposite with left set permanent magnet 1 caused by right group of permanent magnet 1
Magnetic field effect, moved to the front and rear sides of stationary contact 3, it is achieved thereby that the mesh of the nonpolarity arc extinguishing of high-voltage DC contactor
's.
Preferably, the lower surface of permanent magnet 1 is less than the upper surface of movable contact 2 when contact disconnects, the upper surface of permanent magnet 1
Higher than the lower surface of stationary contact 3, less than the inner cavity top of contact chamber 4 so that when contact disconnects, between movable contact 2 and stationary contact 3
For the whole electric arc formed all in magnetic field, arc quenching effect is more preferable.
Preferably, described contact chamber 4 is sealed to form by ceramics with metal sintering, permanent magnet 1 is arranged on contact chamber 4
On outer wall, prevent permanent magnet 1 from being polluted to contact chamber, ensure that the cleaning inside contact chamber 4, improve contact can
By property.Arc extinguishing gases are filled inside contact chamber or are directly vacuumized, lift arc extinguishing ability.
Claims (2)
- A kind of 1. nonpolarity arc quenching system of high-voltage DC contactor, it is characterised in that：Include contact chamber（4）, contact chamber（4）It is interior Bottom be provided with a movable contact（2）, top is provided with two stationary contacts（3）, stationary contact（3）Both sides are arranged with two in parallel respectively Permanent magnet（1）, two stationary contacts（3）Phase the same side permanent magnet（1）Opposite polarity；Wherein same stationary contact（3）Both sides Permanent magnet（1）Between magnetic line of force direction perpendicular to movable contact（2）Moving direction, same stationary contact（3）The permanent magnetism of both sides Body（1）Polarity it is identical；Described contact chamber（4）It is sealed to form by ceramics with metal sintering, permanent magnet（1）It is arranged on contact chamber （4）Outer wall on.
- A kind of 2. nonpolarity arc quenching system of high-voltage DC contactor according to claim 1, it is characterised in that：It is described forever Magnet（1）Lower surface less than contact disconnect when movable contact（2）Upper surface, permanent magnet（1）Upper surface be higher than stationary contact（3） Lower surface, less than contact chamber（4）Inner cavity top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377395.1A CN104952655B (en) | 2015-06-27 | 2015-06-27 | A kind of nonpolarity arc quenching system of high-voltage DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377395.1A CN104952655B (en) | 2015-06-27 | 2015-06-27 | A kind of nonpolarity arc quenching system of high-voltage DC contactor |
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| Publication Number | Publication Date |
|---|---|
| CN104952655A CN104952655A (en) | 2015-09-30 |
| CN104952655B true CN104952655B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510377395.1A Active CN104952655B (en) | 2015-06-27 | 2015-06-27 | A kind of nonpolarity arc quenching system of high-voltage DC contactor |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252162A (en) * | 2016-08-01 | 2016-12-21 | 厦门宏发电力电器有限公司 | A kind of arc extinguishing magnetic circuit and DC relay thereof |
| CN106601524A (en) * | 2017-01-22 | 2017-04-26 | 苏州安来强电子科技有限公司 | DC contactor arc extinguishing device |
| CN108493022A (en) * | 2018-02-26 | 2018-09-04 | 东南大学 | Nonpolarity single-break D.C. contactor |
| CN108878192A (en) * | 2018-07-25 | 2018-11-23 | 浙江环方汽车电器有限公司 | A kind of relay using hollow magnet arc extinguishing |
| KR102009875B1 (en) * | 2019-02-11 | 2019-08-12 | 주식회사 와이엠텍 | DC Bi-Directional Contact Device |
| CN112002610A (en) * | 2020-09-04 | 2020-11-27 | 贵州航天电器股份有限公司 | High-voltage direct-current contactor |
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| CN102129935A (en) * | 2011-03-10 | 2011-07-20 | 二一三电器深圳有限公司 | Arc quenching system for nonpolar direct current contactor |
| CN102246250A (en) * | 2008-12-12 | 2011-11-16 | 泰科电子Amp有限责任公司 | Contact bridge with blow magnets |
| CN103201813A (en) * | 2010-11-01 | 2013-07-10 | 日本特殊陶业株式会社 | Relay |
| CN203367164U (en) * | 2013-05-30 | 2013-12-25 | 贵州天义电器有限责任公司 | Sealed magnetic blowout high-voltage direct-current contactor |
| CN103515153A (en) * | 2013-08-07 | 2014-01-15 | 浙江宏舟新能源科技有限公司 | Reliable arcing system of non-polarity high-voltage direct current contactor |
| CN203882901U (en) * | 2014-05-30 | 2014-10-15 | 厦门宏发电力电器有限公司 | Relay |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8653691B2 (en) * | 2011-01-13 | 2014-02-18 | GM Global Technology Operations LLC | Dual bipolar magnetic field for linear high-voltage contactor in automotive lithium-ion battery systems |
| JP5806562B2 (en) * | 2011-01-12 | 2015-11-10 | 富士電機株式会社 | Magnetic contactor |
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2015
- 2015-06-27 CN CN201510377395.1A patent/CN104952655B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246250A (en) * | 2008-12-12 | 2011-11-16 | 泰科电子Amp有限责任公司 | Contact bridge with blow magnets |
| CN103201813A (en) * | 2010-11-01 | 2013-07-10 | 日本特殊陶业株式会社 | Relay |
| CN102129935A (en) * | 2011-03-10 | 2011-07-20 | 二一三电器深圳有限公司 | Arc quenching system for nonpolar direct current contactor |
| CN203367164U (en) * | 2013-05-30 | 2013-12-25 | 贵州天义电器有限责任公司 | Sealed magnetic blowout high-voltage direct-current contactor |
| CN103515153A (en) * | 2013-08-07 | 2014-01-15 | 浙江宏舟新能源科技有限公司 | Reliable arcing system of non-polarity high-voltage direct current contactor |
| CN203882901U (en) * | 2014-05-30 | 2014-10-15 | 厦门宏发电力电器有限公司 | Relay |
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| CN104952655A (en) | 2015-09-30 |
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