CN113178359A - High-voltage direct-current relay with magnetic steel arc extinguishing function - Google Patents
High-voltage direct-current relay with magnetic steel arc extinguishing function Download PDFInfo
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- CN113178359A CN113178359A CN202110220485.5A CN202110220485A CN113178359A CN 113178359 A CN113178359 A CN 113178359A CN 202110220485 A CN202110220485 A CN 202110220485A CN 113178359 A CN113178359 A CN 113178359A
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- magnetic steel
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- arc extinguishing
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a high-voltage direct-current relay with magnetic steel arc extinction, which comprises two stationary contact leading-out ends and a movable reed, wherein the two stationary contact leading-out ends are connected with the movable reed through a connecting piece; the movable spring is arranged below the two stationary contact leading-out ends, and two ends of the movable spring are correspondingly matched with the bottom ends of the two stationary contact leading-out ends respectively; first magnetic steels are respectively arranged at the positions, corresponding to the contacts, around the movable reed, and the surfaces, with polarities, of the first magnetic steels face the corresponding contacts; in two stationary contact leading-out ends, still be equipped with the second magnet steel in the one side that faces away from the stationary contact to make the one side that has the polarity of second magnet steel towards the corresponding contact, and the polarity of the one side towards the contact of second magnet steel is opposite with the polarity of the one side towards the contact of first magnet steel. The invention can strengthen the magnetic field intensity of the contact point, and leads the Lorentz force of the starting point to always face the arc extinguishing direction, thereby improving the arc extinguishing effect.
Description
Technical Field
The invention relates to a direct current relay, in particular to a high-voltage direct current relay with magnetic steel arc extinguishing.
Background
The existing direct current relay mostly adopts a movable contact spring direct-acting type (also called solenoid direct-acting type) scheme, a contact part of the existing direct current relay adopts two static contacts and a movable contact spring, the two static contacts are usually installed at the top of a ceramic cover, the bottom ends of the two static contacts (namely static contact leading-out ends) extend into the ceramic cover, the movable contact spring is distributed in the ceramic cover in a direct-acting type, two ends of the movable contact spring are used as movable contacts and are respectively matched with the bottom ends of the two static contacts which are used as static contacts, when the movable contacts at the two ends of the movable contact spring are contacted with the static contacts at the bottom ends of the two static contacts, current flows in from one static contact, and flows out from the other static contact after passing through the movable contact spring; the movable reed is arranged at one end of the push rod component, the other end of the push rod component is connected with the movable iron core of the magnetic circuit part, when the coil is connected with current to enable the push rod component to move upwards, two ends of the movable reed are respectively contacted with the two static contacts to switch on the load, when the coil is disconnected with the current, the push rod component moves downwards under the action of the reset spring, two ends of the movable reed are respectively separated from the two static contacts to switch off the load. In the high-voltage direct-current relay in the prior art, magnetic steel is generally adopted for arc extinction, namely, the magnetic steel is arranged around a contact, and arc blowout is realized by utilizing a magnetic field generated by the magnetic steel. The most typical magnetic steel configuration scheme is that a magnetic steel is respectively configured at the outer sides of two ends of the length of the movable spring piece, although the arc blowing direction of the double-magnetic steel scheme is good, the nonpolar requirement is also met, the magnetic field intensity is weak (particularly at an arc starting point and the center of a leading-out end), and for a heavy-load product, the ceramic cavity is larger, so that the magnetic field intensity reaching the arc starting point by an arc extinguishing part is smaller, the initial arc extinguishing effect is not good, and arc extinguishing cannot be timely carried out under the condition of limited space. Therefore, the high-voltage direct-current relay in the prior art cannot meet the lifting requirements of new energy automobiles and energy storage projects on system loads.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-voltage direct-current relay with magnetic steel arc extinction, which can strengthen the magnetic field intensity of a contact point through structural improvement, so that the Lorentz force of an arcing point always faces to the direction beneficial to arc extinction, and the arc extinction effect is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-voltage direct-current relay with magnetic steel arc extinguishing comprises two stationary contact leading-out ends and a movable reed; the movable spring is arranged below the leading-out ends of the two static contacts, and the two ends of the movable spring, which are used as movable contacts, are correspondingly matched with the bottom ends, which are used as the static contacts, of the leading-out ends of the two static contacts respectively; first magnetic steels are respectively arranged at the positions, corresponding to the contacts, around the movable reed, and the surfaces, with the polarity, of the first magnetic steels face the corresponding contacts, so that arc extinction is realized by utilizing a horizontal magnetic field formed by the first magnetic steels; in two stationary contact leading-out ends, still be equipped with the second magnet steel in the one side that faces away from the stationary contact to the one side that makes the second magnet steel have a polarity is towards the contact that corresponds, and the polarity of the one side of the orientation contact of second magnet steel is opposite with the polarity of the one side of the orientation contact of first magnet steel, in order to utilize first magnet steel and second magnet steel to form vertical magnetic field and strengthen contact department magnetic field intensity and further realize the arc extinguishing in contact department.
And the upper end of the stationary contact leading-out end is provided with a groove which is sunken downwards, and the second magnetic steel is embedded in the groove and is close to the corresponding contact.
The second magnetic steel is circular; the section of the groove is in a circular shape correspondingly matched with the second magnetic steel; the second magnetic steel is positioned in the middle of the leading-out end of the stationary contact in the same corresponding horizontal plane.
The two movable contacts are bulges which are integrally formed at two ends of the movable spring.
The two first magnetic steels are respectively arranged at the outer sides of the two ends of the length of the movable reed; the convex bracts at the two ends of the movable spring are respectively eccentrically contacted with the bottom ends of the leading-out ends of the two static contacts.
The bulges at the two ends of the movable spring are respectively arranged at the end edges at the two ends of the movable spring; the contact positions of the two stationary contact leading-out ends and the protrusions at the two ends of the movable spring are positioned on the opposite outer sides of the bottom ends of the two stationary contact leading-out ends.
The bottom end face of the static contact leading-out end is circular, and the contact position of the static contact leading-out end and the convex bud of the movable reed does not exceed the radius of the circle.
The direct current relay further comprises two first U-shaped yokes which are respectively arranged on the two first magnetic steels, the U-shaped bottom walls of the two first U-shaped yokes are respectively contacted with one surface, back to the corresponding contacts, of the corresponding first magnetic steels, and two U-shaped side walls of the two first U-shaped yokes are respectively arranged on two sides of the width of the movable spring and are opposite to the corresponding contacts.
The projection of the matching position of the movable contact and the fixed contact on a reference horizontal plane falls into the projection of a frame-shaped outline surrounded by the first U-shaped yoke on the reference horizontal plane.
The number of the first magnetic steels is four, the four first magnetic steels are respectively arranged at the outer sides of two sides of the width of the movable spring piece and are opposite to the corresponding contacts, and the polarities of one surfaces, facing the corresponding contacts, of the two first magnetic steels corresponding to the same contact are set to be the same.
The direct current relay further comprises two second U-shaped yokes which are respectively arranged on the four first magnetic steels, the U-shaped bottom walls of the two second U-shaped yokes respectively correspond to the outer sides of the two ends of the length of the movable spring, and the two U-shaped side walls of the two second U-shaped yokes are respectively arranged on the two sides of the width of the movable spring and are in contact with one surface, back to the corresponding contact, of the first magnetic steel at the corresponding position.
The movable reed is correspondingly arranged in the middle of the height of the first magnetic steel.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the second magnetic steel is also arranged on one surface back to the fixed contact in the leading-out ends of the two fixed contacts, the surface with the polarity of the second magnetic steel faces the corresponding contact, and the polarity of the surface of the second magnetic steel facing the contact is opposite to that of the surface of the first magnetic steel facing the contact, so that a longitudinal magnetic field is formed at the contact by the first magnetic steel and the second magnetic steel and the magnetic field strength at the contact is enhanced to further realize arc extinction. The structure of the invention can promote the longitudinal arc striking magnetic field, improve the central magnetic field intensity of the leading-out end and accelerate the magnetic quenching speed at the moment of arc striking.
2. The invention adopts the technical scheme that the two movable contacts are integrally formed into the convex bracts at the two ends of the movable spring, and the convex bracts at the two ends of the movable spring are respectively in eccentric contact with the bottom ends of the leading-out ends of the two fixed contacts. The structure of the invention can strengthen the magnetic field intensity at the contact point through the matching of the longitudinal arc striking magnetic field and the eccentric contact point, so that the Lorentz force at the arc striking point always faces to the arc extinguishing direction, thereby improving the arc extinguishing effect.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the high-voltage direct-current relay with magnetic steel arc extinguishing of the invention is not limited to the embodiment.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of the present invention;
FIG. 2 is an exploded perspective view of a first embodiment of the present invention;
FIG. 3 is a top view of a first embodiment of the present invention;
FIG. 4 is a cross-sectional view of a first embodiment of the invention (taken along the length of the movable spring plate);
FIG. 5 is a top view of a second embodiment of the present invention;
FIG. 6 is a sectional view of a second embodiment of the present invention (shown with one of the contact points along the width of the movable spring plate);
fig. 7 is a cross-sectional view (at another contact point in the width direction of the movable spring) of the first embodiment of the present invention.
Detailed Description
Example one
Referring to fig. 1 to 4, the high-voltage direct-current relay with magnetic steel arc extinguishing of the invention comprises two stationary contact leading-out terminals 1 and a movable reed 2; the movable spring leaf 2 is arranged below the two stationary contact leading-out ends 1, and two ends of the movable spring leaf 2 serving as movable contacts are correspondingly matched with the bottom ends of the two stationary contact leading-out ends 1 serving as stationary contacts respectively; the outer sides of the two ends of the length of the movable reed 2 are respectively provided with a first magnetic steel 3, and one surface of the first magnetic steel 3 with polarity faces to a corresponding contact, so that arc extinction is realized by utilizing a horizontal magnetic field (as shown in fig. 3) formed by the two first magnetic steels 3; in two stationary contact leading-out ends 1, still be equipped with second magnet steel 4 in the one side that faces away from the stationary contact to make the one side that has the polarity of second magnet steel 4 towards the corresponding contact, and the polarity of the one side towards the contact of second magnet steel 4 is opposite with the polarity of the one side towards the contact of first magnet steel, in order to utilize first magnet steel 3 and second magnet steel 4 to form longitudinal magnetic field (as shown in fig. 4) and strengthen the magnetic field intensity at the contact and further realize the arc extinguishing.
In this embodiment, the magnetic polarity of the first magnetic steel 3 facing the contact corresponding to one end of the movable reed 2 is an N pole, the magnetic polarity of the first magnetic steel 3 facing the contact corresponding to the other end of the movable reed 2 is an S pole, the magnetic polarity of the second magnetic steel 4 facing the contact corresponding to one end of the movable reed 2 is an S pole, and the magnetic polarity of the first magnetic steel 3 facing the contact corresponding to the other end of the movable reed 2 is an N pole.
In this embodiment, the upper ends of the two stationary contact leading-out ends 1 are respectively provided with a groove 11 which is recessed downwards, and the second magnetic steel 4 is embedded in the groove 11 and makes the second magnetic steel 4 approach to the corresponding contact.
In this embodiment, the second magnetic steel 4 is circular; the section of the groove 11 is in a circular shape correspondingly matched with the second magnetic steel; the second magnetic steel 4 is positioned in the middle of the stationary contact leading-out end 1 in the same corresponding horizontal plane.
In this embodiment, the two moving contacts are protruding bracts 21 integrally formed at two ends of the moving spring piece 2, and the protruding bracts 21 at two ends of the moving spring piece 2 are eccentrically contacted with the bottom ends of the two stationary contact leading-out terminals 1, respectively. The bud 21 is formed by striking the movable spring piece 2 in the thickness direction.
In the embodiment, the protrusions 21 at the two ends of the movable spring piece 2 are respectively arranged at the end edges at the two ends of the movable spring piece; the contact positions 12 of the two stationary contact terminals 1 with the lobes of the two ends of the movable spring are located on the opposite outer sides of the bottom ends of the two stationary contact terminals.
In this embodiment, the bottom end surface of the stationary contact leading-out terminal 1 is circular, and the contact position 12 of the stationary contact leading-out terminal and the convex bud 21 of the movable spring piece 2 does not exceed the radius of the circle.
In this embodiment, the movable spring piece 2 corresponds to the middle position of the height of the first magnetic steel 3.
In this embodiment, the dc relay further includes two first U-shaped yokes 5 respectively disposed on the two first magnetic steels, the U-shaped bottom walls 51 of the two first U-shaped yokes 5 respectively contact with one surfaces of the corresponding first magnetic steels 3 facing away from the corresponding contacts, and the U-shaped two side walls 52 of the two first U-shaped yokes 5 are respectively disposed on two sides of the width of the movable spring 2 and face the corresponding contacts.
In this embodiment, the projection of the fitting position of the moving contact and the stationary contact on the reference horizontal plane falls into the projection of the frame-shaped contour surrounded by the first U-shaped yoke 5 on the reference horizontal plane.
The invention relates to a high-voltage direct-current relay with magnetic steel arc extinguishing, which is characterized in that in two stationary contact leading-out ends 1, a second magnetic steel 4 is also arranged on one surface back to a stationary contact, the surface with polarity of the second magnetic steel 4 faces to the corresponding contact, and the polarity of the surface of the second magnetic steel 4 facing to the contact is opposite to that of the surface of the first magnetic steel 3 facing to the contact, so that a longitudinal magnetic field is formed at the contact by the first magnetic steel 3 and the second magnetic steel 4, and the magnetic field intensity at the contact is enhanced to further realize arc extinguishing. The structure of the invention can promote the longitudinal arc striking magnetic field, improve the central magnetic field intensity of the leading-out end and accelerate the magnetic quenching speed at the moment of arc striking. The invention adopts the technical scheme that the two movable contacts are arranged into the convex bracts 21 which are integrally formed at the two ends of the movable spring piece 2, and the convex bracts 21 at the two ends of the movable spring piece 2 are respectively in eccentric contact with the bottom ends of the two fixed contact leading-out ends 1. The structure of the invention can strengthen the magnetic field intensity at the contact point through the matching of the longitudinal arc striking magnetic field and the eccentric contact point, so that the Lorentz force at the arc striking point always faces to the arc extinguishing direction, thereby improving the arc extinguishing effect.
In the embodiment, the magnetic polarity of one surface, facing the contact, of the first magnetic steel 3 corresponding to one end of the movable spring piece 2 is an N pole, and the magnetic polarity of one surface, facing the contact, of the first magnetic steel 3 corresponding to the other end of the movable spring piece 2 is an S pole; of course, the magnetic polarity of the surface of the first magnetic steel 3 facing the contact corresponding to one end of the movable spring piece 2 may be S-pole, and the magnetic polarity of the surface of the first magnetic steel 3 facing the contact corresponding to the other end of the movable spring piece 2 may be N-pole, or both the surfaces of the two first magnetic steels 3 facing the contact may be N-pole or both S-poles.
Example two
Referring to fig. 5 to 7, the high-voltage direct-current relay with magnetic steel arc extinguishing according to the present invention is different from the first embodiment in that four first magnetic steels 3 are provided, the four first magnetic steels 3 are respectively disposed outside two sides of the width of the movable spring 2 and are opposite to corresponding contacts, and polarities of surfaces of two first magnetic steels 3 corresponding to the same contact, which face the corresponding contacts, are set to be the same.
In this embodiment, the magnetic polarities of the surfaces of the two first magnetic steels 3 facing the contact corresponding to one end of the movable reed 2 are both N poles, the magnetic polarities of the surfaces of the two first magnetic steels 3 facing the contact corresponding to the other end of the movable reed 2 are both S poles, the magnetic polarities of the surfaces of the second magnetic steels 4 facing the contact corresponding to one end of the movable reed 2 are both S poles, and the magnetic polarities of the surfaces of the first magnetic steels 3 facing the contact corresponding to the other end of the movable reed 2 are both N poles.
In this embodiment, the dc relay further includes two second U-shaped yokes 6 respectively disposed on the four first magnetic steels 3, U-shaped bottom walls 61 of the two second U-shaped yokes 6 respectively correspond to outer sides of two ends of the length of the movable spring 2, and U-shaped two side walls 62 of the two second U-shaped yokes 6 are respectively disposed on two sides of the width of the movable spring 2 and contact with a surface of the corresponding first magnetic steel 3 facing away from the corresponding contact.
In the embodiment, the magnetic polarities of the surfaces, facing the contacts, of the two first magnetic steels 3 corresponding to one end of the movable reed 2 are both N poles, and the magnetic polarities of the surfaces, facing the contacts, of the two first magnetic steels 3 corresponding to the other end of the movable reed 2 are both S poles; of course, the magnetic polarities of the surfaces, facing the contacts, of the two first magnetic steels 3 corresponding to one end of the movable spring piece 2 may be both S poles, and the magnetic polarities of the surfaces, facing the contacts, of the two first magnetic steels 3 corresponding to the other end of the movable spring piece 2 may be both N poles; or the surfaces of the four first magnetic steels 3 facing the contacts are all set as N poles or S poles.
In the case where the four first magnetic steels 3 have N poles or S poles on their surfaces facing the contacts, two first magnetic steels 3 on the same side corresponding to the width of the movable spring piece 2 may be connected to form one piece.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (12)
1. A high-voltage direct-current relay with magnetic steel arc extinguishing comprises two stationary contact leading-out ends and a movable reed; the movable spring is arranged below the leading-out ends of the two static contacts, and the two ends of the movable spring, which are used as movable contacts, are correspondingly matched with the bottom ends, which are used as the static contacts, of the leading-out ends of the two static contacts respectively; first magnetic steels are respectively arranged at the positions, corresponding to the contacts, around the movable reed, and the surfaces, with the polarity, of the first magnetic steels face the corresponding contacts, so that arc extinction is realized by utilizing a horizontal magnetic field formed by the first magnetic steels; the method is characterized in that: in two stationary contact leading-out ends, still be equipped with the second magnet steel in the one side that faces away from the stationary contact to the one side that makes the second magnet steel have a polarity is towards the contact that corresponds, and the polarity of the one side of the orientation contact of second magnet steel is opposite with the polarity of the one side of the orientation contact of first magnet steel, in order to utilize first magnet steel and second magnet steel to form vertical magnetic field and strengthen contact department magnetic field intensity and further realize the arc extinguishing in contact department.
2. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 1, is characterized in that: and the upper end of the stationary contact leading-out end is provided with a groove which is sunken downwards, and the second magnetic steel is embedded in the groove and is close to the corresponding contact.
3. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 2, is characterized in that: the second magnetic steel is circular; the section of the groove is in a circular shape correspondingly matched with the second magnetic steel; the second magnetic steel is positioned in the middle of the leading-out end of the stationary contact in the same corresponding horizontal plane.
4. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 3, is characterized in that: the two movable contacts are bulges which are integrally formed at two ends of the movable spring.
5. The HVDC relay with magnetic steel arc extinguishing according to claim 4, characterized in that: the two first magnetic steels are respectively arranged at the outer sides of the two ends of the length of the movable reed; the convex bracts at the two ends of the movable spring are respectively eccentrically contacted with the bottom ends of the leading-out ends of the two static contacts.
6. The HVDC relay with magnetic steel arc extinguishing according to claim 5, characterized in that: the bulges at the two ends of the movable spring are respectively arranged at the end edges at the two ends of the movable spring; the contact positions of the two stationary contact leading-out ends and the protrusions at the two ends of the movable spring are positioned on the opposite outer sides of the bottom ends of the two stationary contact leading-out ends.
7. The HVDC relay with magnetic steel arc extinguishing according to claim 6, characterized in that: the bottom end face of the static contact leading-out end is circular, and the contact position of the static contact leading-out end and the convex bud of the movable reed does not exceed the radius of the circle.
8. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 7, is characterized in that: the direct current relay further comprises two first U-shaped yokes which are respectively arranged on the two first magnetic steels, the U-shaped bottom walls of the two first U-shaped yokes are respectively contacted with one surface, back to the corresponding contacts, of the corresponding first magnetic steels, and two U-shaped side walls of the two first U-shaped yokes are respectively arranged on two sides of the width of the movable spring and are opposite to the corresponding contacts.
9. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 8, is characterized in that: the projection of the matching position of the movable contact and the fixed contact on a reference horizontal plane falls into the projection of a frame-shaped outline surrounded by the first U-shaped yoke on the reference horizontal plane.
10. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 3 or 4, characterized in that: the number of the first magnetic steels is four, the four first magnetic steels are respectively arranged at the outer sides of two sides of the width of the movable spring piece and are opposite to the corresponding contacts, and the polarities of one surfaces, facing the corresponding contacts, of the two first magnetic steels corresponding to the same contact are set to be the same.
11. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 10, is characterized in that: the direct current relay further comprises two second U-shaped yokes which are respectively arranged on the four first magnetic steels, the U-shaped bottom walls of the two second U-shaped yokes respectively correspond to the outer sides of the two ends of the length of the movable spring, and the two U-shaped side walls of the two second U-shaped yokes are respectively arranged on the two sides of the width of the movable spring and are in contact with one surface, back to the corresponding contact, of the first magnetic steel at the corresponding position.
12. The high-voltage direct-current relay with the magnetic steel arc extinguishing function according to claim 1, is characterized in that: the movable reed is correspondingly arranged in the middle of the height of the first magnetic steel.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110220485.5A CN113178359A (en) | 2021-02-26 | 2021-02-26 | High-voltage direct-current relay with magnetic steel arc extinguishing function |
| US18/547,399 US20240145188A1 (en) | 2021-02-26 | 2022-02-08 | High-voltage dc relay with permanent magnet arc extinguishing function |
| JP2023536011A JP2023552893A (en) | 2021-02-26 | 2022-02-08 | High voltage DC relay with permanent magnet arc extinction |
| EP22758758.1A EP4300532A1 (en) | 2021-02-26 | 2022-02-08 | High-voltage direct-current relay with magnetic steel arc extinguishing function |
| KR1020237019225A KR20230104683A (en) | 2021-02-26 | 2022-02-08 | high-voltage direct-current relay with a magnetic steel arc extinguishing function |
| PCT/CN2022/075540 WO2022179393A1 (en) | 2021-02-26 | 2022-02-08 | High-voltage direct-current relay with magnetic steel arc extinguishing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110220485.5A CN113178359A (en) | 2021-02-26 | 2021-02-26 | High-voltage direct-current relay with magnetic steel arc extinguishing function |
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| Publication Number | Publication Date |
|---|---|
| CN113178359A true CN113178359A (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110220485.5A Pending CN113178359A (en) | 2021-02-26 | 2021-02-26 | High-voltage direct-current relay with magnetic steel arc extinguishing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022179393A1 (en) * | 2021-02-26 | 2022-09-01 | 厦门宏发电力电器有限公司 | High-voltage direct-current relay with magnetic steel arc extinguishing function |
| WO2023036062A1 (en) * | 2021-09-10 | 2023-03-16 | 厦门宏发电力电器有限公司 | High-voltage direct current (dc) relay capable of enhancing arc extinguishing capability |
-
2021
- 2021-02-26 CN CN202110220485.5A patent/CN113178359A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022179393A1 (en) * | 2021-02-26 | 2022-09-01 | 厦门宏发电力电器有限公司 | High-voltage direct-current relay with magnetic steel arc extinguishing function |
| WO2023036062A1 (en) * | 2021-09-10 | 2023-03-16 | 厦门宏发电力电器有限公司 | High-voltage direct current (dc) relay capable of enhancing arc extinguishing capability |
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