CN104538255A - High-voltage direct-current relay - Google Patents
High-voltage direct-current relay Download PDFInfo
- Publication number
- CN104538255A CN104538255A CN201410788718.1A CN201410788718A CN104538255A CN 104538255 A CN104538255 A CN 104538255A CN 201410788718 A CN201410788718 A CN 201410788718A CN 104538255 A CN104538255 A CN 104538255A
- Authority
- CN
- China
- Prior art keywords
- arc
- voltage direct
- current relay
- seat board
- outer cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/38—Part of main magnetic circuit shaped to suppress arcing between the contacts of the relay
-
- 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
Abstract
The invention provides a high-voltage direct-current relay which comprises an outer cover, a support, an insulation board, a lug plate, a base plate, a binding post, a contact, a movable contact piece and a magnetic quenching device. The outer cover is installed inside the support. The lug plate is arranged on the side wall of the outer cover. The insulation board and the base plate are sequentially arranged on the upper side of the outer cover. The magnetic quenching device is arranged on the base plate. According to the high-voltage direct-current relay, the magnetic quenching device is adopted independently, misplaced arc guiding cooling fins are arranged on the two sides of the movable contact spring, namely the two sides of the current direction, magnetic blowout electric arcs are evenly dispersed on the arc guiding cooling fins for rapid heat dispersion, damage caused by excessive heat inside the relay is avoided, AgSn alloy added with special elements like trace indium is used as contact materials, the high-voltage direct-current relay has the advantages of being good in arc resistant corrodibility and wear resistance, the erosion resistant capacity of a contact is improved, and the service life is prolonged.
Description
Technical field
The invention belongs to car electrics technical field, be specifically related to a kind of high voltage direct current relay.
Background technology
The many employings of high voltage direct current relay product of existing external production vacuumize product or are filled with nitrogen in the product and inert gas carries out arc extinguishing.In a vacuum, because pressure is lower, only have considerably less gas molecule, this makes to be not easy in vacuum to produce electric arc, and under desirable state, vacuum likely reaches the dielectric strength of every 0.1 millimeter of 10000V.In addition, owing to not having air, in vacuum, contact can not be oxidized, gas molecule is less makes the puncture voltage between contact gap be improved, and reduces possibility that electric arc formed thus reach the object of arc extinguishing.Inertia high-pressure gas medium can make high-voltage relay keep good withstand voltage and protect contact not oxidized; it can avoid contact high temperature scaling loss when relay carries out thermal switch; in the application very sensitive to current fluctuation; inertia gas-filled relay has low and stable leakage current; particularly between break contact, very low leakage current can be kept for a long time.But decomposition and the characteristic ionized and air at high temperature occur inert gas differs widely, the material of Inert gas molecule and the decomposition when high temperature thereof simultaneously, there is absorption free electron and form anion and obtain characteristic, make the electric arc burnt in inertia, arc voltage is lower, arc footpath is comparatively thin, and the thermal inertia of arc column is less.Above-mentioned two kinds of methods have higher requirement to manufacturability, require that the air-tightness of product in whole life all can not be destroyed, otherwise life of product can shorten greatly.And production cost is high, greatly limit the scope of application, only have the high investment projects such as aircraft just can use.This product adopts the high-voltage product of magnetic blow-out, and the life-span can reach more than 50,000 times, and this product is used in existing battery vehicle.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of high voltage direct current relay, this high voltage direct current relay solves the problems such as high voltage direct current relay arc quenching effect is not good by magnetic-quenching arc-extinguishing device.
The present invention is achieved by the following technical programs.
A kind of high voltage direct current relay provided by the invention, comprises outer cover, support, insulation board, lug plate, seat board, binding post, contact, movable contact spring and magnetic-quenching arc-extinguishing device; Described outer cover is installed in support, the sidewall of described outer cover also arranges lug plate, the upside of described outer cover is disposed with insulation board and seat board, described seat board is provided with magnetic-quenching arc-extinguishing device, movable contact spring is provided with in described seat board, the two ends of described movable contact spring are provided with contact, and described contact is connected with binding post, and described binding post is arranged on seat board.
Described magnetic-quenching arc-extinguishing device comprises arc-chute, permanent magnet and leads arc cooling fin, and described arc-chute is arranged on the sidewall of seat board, and described permanent magnet is arranged on the bottom of seat board in the two ends of movable contact spring, described in lead arc cooling fin and be inserted in the gap of arc-chute in seat board.
Described movable contact spring is also provided with spring, in described spring, is provided with support bar.
The material of described contact is AgSnO
2.
" N " pole of two permanent magnets on described seat board is extremely opposed with " S ".
The material of described contact is add the AgSn alloy of the special elementses such as Trace Indium.
Describedly lead the both sides that arc cooling fin is arranged on movable contact spring, and shift to install.
Beneficial effect of the present invention is: adopt independent magnetic-quenching arc-extinguishing device; and in the both sides of movable contact spring; namely the both sides of the sense of current arrange dislocation and lead arc cooling fin; the electric arc that magnetic blow-out is burnt is distributed to the sharply dispersion led and arc cooling fin carries out heat equably; protect interiors of products and do not cause damage of product because heat is excessive; by using the AgSn alloy adding the special elementses such as Trace Indium as slider material; there is the feature of excellent anti electric arc corrosion, mar proof; improve the anti-yaw damper ability of contact, increase the service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation after Fig. 1 removes insulation board, support and outer cover;
Fig. 3 be in Fig. 1 electric current flow to schematic diagram;
Fig. 4 be in Fig. 2 on movable contact spring electric current flow to schematic diagram;
In figure: 1-outer cover, 2-support, 3-insulation board, 4-lug plate, 5-seat board, 6-binding post, 7-screw, 8-arc-chute, 9-permanent magnet, 10-contact, 11-leads arc cooling fin, 12-movable contact spring, 13-spring, 14-support bar.
Embodiment
Further describe technical scheme of the present invention below, but described in claimed scope is not limited to.
A kind of high voltage direct current relay as shown in Figure 1 to 4, comprises outer cover 1, support 2, insulation board 3, lug plate 4, seat board 5, binding post 6, contact 10, movable contact spring 12 and magnetic-quenching arc-extinguishing device; Described outer cover 1 is installed in support 2, the sidewall of described outer cover 1 also arranges lug plate 4, the upside of described outer cover 1 is disposed with insulation board 3 and seat board 5, described seat board 5 is provided with magnetic-quenching arc-extinguishing device, movable contact spring 12 is provided with in described seat board 5, the two ends of described movable contact spring 12 are provided with contact 10, and described contact 10 is connected with binding post 6, and described binding post 6 is arranged on seat board 5; Described movable contact spring 12 is also provided with spring 13, in described spring 13, is provided with support bar 14.
Described magnetic-quenching arc-extinguishing device comprises arc-chute 8, permanent magnet 9 and leads arc cooling fin 11, described arc-chute 8 is arranged on the sidewall of seat board 5, described permanent magnet 9 is arranged on the bottom of seat board 5 in the two ends of movable contact spring 12, described in lead arc cooling fin 11 and be inserted in the gap of arc-chute 8 in seat board 5." N " pole of two permanent magnets 9 on described seat board 5 is extremely opposed with " S ".Be provided with at the two ends of movable contact spring 12 " N " pole with " S " permanent magnet 9 that pole opposes, make magnetic direction vertical with the sense of current, for arc extinguishing provides magnetic blow-out condition.What devise many sequences in movable contact spring 12 both sides leads arc cooling fin 11, and the electric arc of the magnetic blow-out burning produced when its function is and is disconnected by product carries out arc extinguishing cooling from spike to the trend increased by going it; Lead the mode that arc cooling fin 11 arranges dislocation, its objective is that the electric arc by magnetic blow-out is burnt is distributed to the sharply dispersion led and arc cooling fin 11 carries out heat equably, protect interiors of products and do not cause damage of product because heat is excessive.Can reach 400V voltage in view of said structure innovation makes it product voltage, bearing electric current is 100A, improves the problem that independent magnetic quenching effect is bad, reduces technology difficulty simultaneously, improves the manufacturability of product, also improves the load capacity of product simultaneously.
The material of described contact 10 is add the AgSn alloy of the special elementses such as Trace Indium.The material of described contact 10 is AgSnO
2.AgSnO
2material has higher thermal stability, resistance fusion welding and low material transfer characteristic, because SnO2 particle can make the viscosity of motlten metal increase in silver melts, arc erosion is reduced.Repeatedly act on through electric arc, SnO2 composition still can retain at contact surface, and contact anti electric arc corrosion and resistance fusion welding can not significantly decline, therefore have very high useful life, so AgSnO2 has the feature of excellent anti electric arc corrosion, mar proof, enhance the anti-yaw damper ability of product.
The present invention in the design process, take into account the load polarity sense of current when moving in magnetic field, according to left hand rule principle, when electric current moves in magnetic field, magnetic quenching is carried out to product contact, the electric arc that protection product contact produces when disconnecting is to the injury of contact, so deisgn product magnetic blow-out direction is also very crucial, as polarity product, product polar orientation connects the possibility that product instead can be caused to explode, this problem that this product is considered, non-polar design is carried out to product, product load positive-negative polarity can not cause damage to product, when having avoided the reversal connection of polarity product, damage can be caused to product, improve the mistake proofing performance of product, define the direction B in magnetic field in the structure, load current direction I, it is F that electric current can produce electromagnetic force in magnetic field, namely magnetic blow-out utilizes magnetic force to carry out arc extinguishing.Because electric arc is a larger electric current inherently, electric arc disconnects in contact can produce electric arc instantaneously, and high arc temperature can destroy product contact, so electric arc is elongated in magnetic blow-out, allows his automatic distinguishing, thus protection product contact.This project is considered product load current direction technically, and this design take into account that client is easy to use to start with, no matter product " just " pole or " bear " how pole to connect the phenomenon that product all can not be caused to burn, and optimizes the requirement of similar products to polarity.
Claims (7)
1. a high voltage direct current relay, comprise outer cover (1), support (2), insulation board (3), lug plate (4), seat board (5), binding post (6), contact (10), movable contact spring (12) and magnetic-quenching arc-extinguishing device, it is characterized in that: described outer cover (1) is installed in support (2), the sidewall of described outer cover (1) is also arranged lug plate (4), the upside of described outer cover (1) is disposed with insulation board (3) and seat board (5), (5) are provided with magnetic-quenching arc-extinguishing device to described seat board, movable contact spring (12) is provided with in described seat board (5), the two ends of described movable contact spring (12) are provided with contact (10), and described contact (10) are connected with binding post (6), described binding post (6) is arranged on seat board (5).
2. high voltage direct current relay as claimed in claim 1, it is characterized in that: described magnetic-quenching arc-extinguishing device comprises arc-chute (8), permanent magnet (9) and leads arc cooling fin (11), described arc-chute (8) is arranged on the sidewall of seat board (5), described permanent magnet (9) is arranged on the bottom of seat board (5) in the two ends of movable contact spring (12), described in lead arc cooling fin (11) and be inserted in the gap of arc-chute (8) in seat board (5).
3. high voltage direct current relay as claimed in claim 1 or 2, is characterized in that: described movable contact spring (12) is also provided with spring (13), is provided with support bar (14) in described spring (13).
4. high voltage direct current relay as claimed in claim 1, is characterized in that: the material of described contact (10) is AgSnO
2.
5. high voltage direct current relay as claimed in claim 1, is characterized in that: " N " pole of two permanent magnets (9) on described seat board (5) is extremely opposed with " S ".
6. high voltage direct current relay as claimed in claim 1, is characterized in that: the material of described contact (10) is add the AgSn alloy of the special elementses such as Trace Indium.
7. high voltage direct current relay as claimed in claim 2, is characterized in that: described in lead the both sides that arc cooling fin (11) is arranged on movable contact spring (12), and to shift to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410788718.1A CN104538255A (en) | 2014-12-17 | 2014-12-17 | High-voltage direct-current relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410788718.1A CN104538255A (en) | 2014-12-17 | 2014-12-17 | High-voltage direct-current relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104538255A true CN104538255A (en) | 2015-04-22 |
Family
ID=52853762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410788718.1A Pending CN104538255A (en) | 2014-12-17 | 2014-12-17 | High-voltage direct-current relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104538255A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952669A (en) * | 2015-06-30 | 2015-09-30 | 厦门宏发电声股份有限公司 | High-voltage direct-current relay |
| CN105118729A (en) * | 2015-08-19 | 2015-12-02 | 上海瑞奇汽配有限公司 | Vacuum relay |
| CN107622917A (en) * | 2017-10-13 | 2018-01-23 | 三友联众集团股份有限公司 | A kind of electromagnetic relay |
| CN108831802A (en) * | 2018-06-27 | 2018-11-16 | 深圳巴斯巴汽车电子有限公司 | high voltage direct current relay with auxiliary contact |
| CN111512409A (en) * | 2018-02-02 | 2020-08-07 | Ls电气株式会社 | DC relay with permanent magnet housing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007305468A (en) * | 2006-05-12 | 2007-11-22 | Omron Corp | Electromagnetic relay |
| CN201576643U (en) * | 2009-10-31 | 2010-09-08 | 保定市第二电器厂 | Circuit breaker and arc-extinguishing chamber of circuit breaker |
| CN203882901U (en) * | 2014-05-30 | 2014-10-15 | 厦门宏发电力电器有限公司 | Relay |
| CN204289271U (en) * | 2014-12-17 | 2015-04-22 | 贵州天义汽车电器有限公司 | A kind of high voltage direct current relay with magnetic-quenching arc-extinguishing device |
-
2014
- 2014-12-17 CN CN201410788718.1A patent/CN104538255A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007305468A (en) * | 2006-05-12 | 2007-11-22 | Omron Corp | Electromagnetic relay |
| CN201576643U (en) * | 2009-10-31 | 2010-09-08 | 保定市第二电器厂 | Circuit breaker and arc-extinguishing chamber of circuit breaker |
| CN203882901U (en) * | 2014-05-30 | 2014-10-15 | 厦门宏发电力电器有限公司 | Relay |
| CN204289271U (en) * | 2014-12-17 | 2015-04-22 | 贵州天义汽车电器有限公司 | A kind of high voltage direct current relay with magnetic-quenching arc-extinguishing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952669A (en) * | 2015-06-30 | 2015-09-30 | 厦门宏发电声股份有限公司 | High-voltage direct-current relay |
| CN105118729A (en) * | 2015-08-19 | 2015-12-02 | 上海瑞奇汽配有限公司 | Vacuum relay |
| CN105118729B (en) * | 2015-08-19 | 2018-10-30 | 上海瑞奇汽配有限公司 | A kind of low-vacuum load-tripping device |
| CN107622917A (en) * | 2017-10-13 | 2018-01-23 | 三友联众集团股份有限公司 | A kind of electromagnetic relay |
| CN111512409A (en) * | 2018-02-02 | 2020-08-07 | Ls电气株式会社 | DC relay with permanent magnet housing |
| CN108831802A (en) * | 2018-06-27 | 2018-11-16 | 深圳巴斯巴汽车电子有限公司 | high voltage direct current relay with auxiliary contact |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |
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| RJ01 | Rejection of invention patent application after publication |