CN219457479U - High-voltage direct-current relay with magnetic steel arc extinction function - Google Patents
High-voltage direct-current relay with magnetic steel arc extinction function Download PDFInfo
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- CN219457479U CN219457479U CN202320765084.2U CN202320765084U CN219457479U CN 219457479 U CN219457479 U CN 219457479U CN 202320765084 U CN202320765084 U CN 202320765084U CN 219457479 U CN219457479 U CN 219457479U
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Abstract
The utility model relates to a high-voltage direct-current relay with a magnetic steel arc extinguishing function, which comprises a shell, an electromagnetic driving mechanism, a ceramic cover and a contact assembly, wherein the contact assembly comprises a moving contact and two fixed contacts, a first magnetic steel group and a second magnetic steel group are respectively arranged at the positions, corresponding to the contact points of the two fixed contacts and the moving contact, outside the ceramic cover, of the contact points, the first magnetic steel group comprises a first yoke iron clamp, a first main magnetic steel and two first side magnetic steels, the magnetic poles of the first main magnetic steel and the two first side magnetic steels facing the contact points are the same, the second magnetic steel group comprises a first yoke iron clamp, a second main magnetic steel and two second side magnetic steels, the magnetic poles of the second main magnetic steel and the two second side magnetic steels facing the contact points are the same, and the magnetic poles of the first main magnetic steels facing the contact points are opposite to the magnetic poles of the second main magnetic steels facing the contact points. The utility model has the advantages of simple structure, stable and reliable performance, strong magnetic field intensity of the arcing point and strong arc extinguishing capability.
Description
Technical Field
The utility model relates to the technical field of relays, in particular to a high-voltage direct-current relay with magnetic steel arc extinction.
Background
The relay is used as an electronic control device, and the medium (tool) used has electricity, light, magnetism, heat and the like (i.e. input quantity), and the transmission and control are circuits or signals (i.e. output quantity), and the relay is provided with a control system (also known as an input loop) and a controlled system (also known as an output loop), and the two loops are coupled through an internal mechanical or electronic device to realize linkage of states of the two loops. Relays are commonly used in automatic control circuits. The automatic switch is equivalent to an automatic switch, and plays roles of automatic adjustment, safety protection, circuit switching and the like in a circuit. Along with the rapid development of new energy industry, the high-voltage direct-current relay is widely applied to the fields of new energy automobiles, charging corollary equipment, photovoltaic/wind power generation systems, engineering vehicles, UPS and the like. At present, a ceramic structure and a high-voltage direct current relay loaded with no magnetic poles adopt a double-magnetic steel structure design, two magnetic steels are distributed on the left side and the right side of a contact, the distance between the magnetic steel and an arc starting point of the contact is large due to the thickness of the ceramic, the magnetic leakage is more, only a part of the middle magnetic force line passes through the contact, the magnetic field of the arc starting point is weak, and the arc extinguishing capability is poor.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the magnetic steel arc-extinguishing high-voltage direct current relay which has the advantages of simple structure, stable and reliable performance, strong magnetic field strength at an arcing point and strong arc-extinguishing capability.
In order to achieve the above purpose, the utility model adopts the high-voltage direct current relay with the magnetic steel arc extinguishing function, which comprises a shell, an electromagnetic driving mechanism, a ceramic cover arranged on the electromagnetic driving mechanism and a contact component arranged in the ceramic cover, wherein the contact component comprises a moving contact and two fixed contacts which are in linkage fit with the electromagnetic driving mechanism, a first magnetic steel group and a second magnetic steel group are respectively arranged at the contact points of the two fixed contacts and the moving contact outside the ceramic cover, the first magnetic steel group comprises a first yoke iron clamp, a first main magnetic steel arranged in the first yoke iron clamp, two first side magnetic steels which are arranged in the first yoke iron clamp and symmetrically distributed on two sides of the first main magnetic steel, the magnetic poles of the first main magnetic steel and the two first side magnetic steels are the same towards the contact point, the second magnetic steel group comprises a first yoke iron clamp, a second main magnetic steel arranged in the first yoke iron clamp, two second side magnetic steels which are arranged in the second yoke iron clamp and symmetrically distributed on two sides of the second main magnetic steel, and the second main magnetic steels face the same towards the contact point, and the second main magnetic poles of the second magnetic steels face the contact point oppositely.
The beneficial effects of the structure are as follows: the ceramic cover is provided with a first magnetic steel group and a second magnetic steel group which are enclosed outside the contact points of the two fixed contacts and the moving contact respectively, and the first magnetic steel group and the second magnetic steel group are compact in structural design and smaller in volume. And the first magnetic steel group, the second magnetic steel group and the two contact points have smaller distance from the starting point to the arc point, the magnetic leakage is smaller, the magnetic field intensity of the starting point can be increased, and the arc extinguishing capability is stronger. Therefore, the high-voltage direct-current relay has the advantages of simple structure, stable and reliable performance, strong magnetic field strength of an arcing point and strong arc extinguishing capability.
Specifically, first main magnet steel, two first side magnet steel laminate respectively on first yoke presss from both sides the inner wall, first main magnet steel and two first side magnet steel between be formed with enclose and close the first magnetic blow chamber outside one of them contact point, second main magnet steel, two second side magnet steel laminate respectively on second yoke presss from both sides the inner wall, second main magnet steel and two second side magnet steel between be formed with enclose and close the second magnetic blow chamber outside another contact point. Two contact points of the two fixed contacts and the moving contact are respectively arranged in the first magnetic blowing cavity and the second magnetic blowing cavity, so that the magnetic field intensity at the two contact points can be enhanced, and the arc extinguishing performance of the high-voltage direct current relay can be improved.
Particularly, the first yoke iron clamp is provided with a limiting block at two ends corresponding to the first main magnetic steel respectively, the first main magnetic steel is clamped between the two limiting blocks, the second yoke iron clamp is provided with a positioning block at two ends corresponding to the second main magnetic steel respectively, and the second main magnetic steel is clamped between the two positioning blocks. The first main magnetic steel is clamped between two limiting blocks of the first yoke iron clamp, and the second main magnetic steel is clamped between two positioning blocks of the second yoke iron clamp, so that the first yoke iron clamp and the first main magnetic steel, and the second yoke iron clamp and the second main magnetic steel are convenient to assemble, and the assembly is more convenient.
The first yoke iron clamp and the second yoke iron clamp are U-shaped, clamping grooves of the first yoke iron clamp and the second yoke iron clamp are respectively enclosed outside contact points of the two fixed contacts and the moving contact, and a gap is formed between the first yoke iron clamp and the second yoke iron clamp. The first yoke iron clamp and the second yoke iron clamp are respectively enclosed outside the two contact points, so that the magnetic field intensity at the arc starting point between the moving contact and the fixed contact can be enhanced, and the arc extinguishing capability can be improved.
Particularly, the movable contact is provided with an anti-short-circuit current component, the anti-short-circuit current component comprises a lower short-circuit plate arranged on one side of the movable contact, an upper short-circuit plate arranged on the other side of the movable contact, a U-shaped bracket arranged between the upper short-circuit plate and a push rod of the electromagnetic driving mechanism, and a spring arranged between the push rod and the lower short-circuit plate, the lower short-circuit plate is provided with two upper strip-shaped pole shoe parts extending on two sides of the movable contact, and the lower short-circuit plate is provided with lower strip-shaped pole shoe parts matched with the two upper strip-shaped pole shoe parts. When the movable contact works, when short-circuit current flows through the movable contact, magnetic lines of force around the movable contact are gathered on the lower short-circuit plate, a magnetic field is generated on the lower strip-shaped pole shoe surface of the lower short-circuit plate, and suction force is generated on the upper short-circuit plate, so that the movable contact can be prevented from being sprung. The upper short-circuit plate and the lower short-circuit plate are respectively provided with an upper strip-shaped pole shoe and a lower strip-shaped pole shoe which are matched with each other, so that the pole shoe areas of the upper short-circuit plate and the lower short-circuit plate can be increased, the mutual suction force between the upper short-circuit plate and the lower short-circuit plate is increased, and the short-circuit resistance and the impact resistance can be improved.
In particular, the area of the lower strip-shaped pole shoe part is larger than that of the upper strip-shaped pole shoe part. The area of the upper strip pole shoe part is increased, and the mutual suction force between the upper short circuit plate and the lower short circuit plate can be increased, so that the short circuit resistance and the impact resistance can be improved.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present utility model.
Fig. 2 is an exploded view of an embodiment of the present utility model.
Fig. 3 is an internal structural diagram of an embodiment of the present utility model.
Fig. 4 is an assembly diagram of a first magnetic steel assembly and a second magnetic steel assembly according to an embodiment of the present utility model.
Fig. 5 is a perspective view of a short-circuit current resisting assembly according to an embodiment of the utility model.
Detailed Description
As shown in fig. 1 to 5, the embodiment of the utility model is a high-voltage direct-current relay with magnetic steel arc extinguishing, which comprises a shell 10, an electromagnetic driving mechanism 11, a ceramic cover 12 arranged on the electromagnetic driving mechanism 11, and a contact assembly 20 arranged in the ceramic cover 12, wherein the contact assembly 20 comprises a moving contact 21 and two fixed contacts 22 which are in linkage fit with the electromagnetic driving mechanism 11, a first magnetic steel group 30 and a second magnetic steel group 31 are respectively arranged at the contact point of the two fixed contacts 22 and the moving contact 21 outside the ceramic cover 12, the first magnetic steel group 30 comprises a first yoke iron clamp 301, a first main magnetic steel 302 arranged in the first yoke iron clamp 301, two first side magnetic steels 303 which are arranged in the first yoke iron clamp 301 and symmetrically distributed at two sides of the first main magnetic steel 302, the first main magnetic steel 302 and the two first side magnetic steels 303 face the same contact point, the second magnetic steel group 31 comprises a first yoke iron clamp 311, a second main magnetic steel 312 arranged in the first yoke iron clamp 311, a second magnetic steel 312 arranged at the contact point of the second main magnetic steel 312 and symmetrically distributed at two sides of the second magnetic steel 313 which face the same main magnetic pole 302 and face the second main magnetic poles 313 and are symmetrically distributed at the two sides of the second main magnetic steel 302. The first main magnetic steel 302 and the two first side magnetic steels 303 are respectively attached to the inner wall of the first yoke iron clamp 301, a first magnetic blowing cavity 300 which is enclosed outside one contact point is formed between the first main magnetic steel 302 and the two first side magnetic steels 303, the second main magnetic steel 312 and the two second side magnetic steels 313 are respectively attached to the inner wall of the second yoke iron clamp 311, and a second magnetic blowing cavity 310 which is enclosed outside the other contact point is formed between the second main magnetic steel 312 and the two second side magnetic steels 313. Two contact points of the two fixed contacts and the moving contact are respectively arranged in the first magnetic blowing cavity and the second magnetic blowing cavity, so that the magnetic field intensity at the two contact points can be enhanced, and the arc extinguishing performance of the high-voltage direct current relay can be improved. The two ends of the first yoke iron clamp 301 corresponding to the first main magnetic steel 302 are respectively provided with a limiting block 3011, the first main magnetic steel 302 is clamped between the two limiting blocks 3011, the two ends of the second yoke iron clamp 311 corresponding to the second main magnetic steel 312 are respectively provided with a positioning block 3111, and the second main magnetic steel 312 is clamped between the two positioning blocks 3111. The first main magnetic steel is clamped between two limiting blocks of the first yoke iron clamp, and the second main magnetic steel is clamped between two positioning blocks of the second yoke iron clamp, so that the first yoke iron clamp and the first main magnetic steel, and the second yoke iron clamp and the second main magnetic steel are convenient to assemble, and the assembly is more convenient. The basic shapes of the first yoke iron clamp 301 and the second yoke iron clamp 311 are U-shaped, the clamping grooves 3001 of the first yoke iron clamp 301 and the second yoke iron clamp 311 are respectively enclosed outside the contact points of the two fixed contacts 22 and the moving contact 21, and a gap 3002 is formed between the first yoke iron clamp 301 and the second yoke iron clamp 311. The first yoke iron clamp and the second yoke iron clamp are respectively enclosed outside the two contact points, so that the magnetic field intensity at the arc starting point between the moving contact and the fixed contact can be enhanced, and the arc extinguishing capability can be improved.
As shown in fig. 1 and 5, the moving contact 21 is provided with a short-circuit current resisting assembly 40, the short-circuit current resisting assembly 40 includes a lower short-circuit plate 41 disposed on one side of the moving contact 21, an upper short-circuit plate 42 disposed on the other side of the moving contact 21, a U-shaped bracket 43 disposed between the upper short-circuit plate 42 and the push rod 11 of the electromagnetic driving mechanism 11, and a spring 44 disposed between the push rod 11 and the lower short-circuit plate 41, the lower short-circuit plate 41 has two upper bar-shaped pole shoe portions 411 extending on both sides of the moving contact 21, and the lower short-circuit plate 42 has a lower bar-shaped pole shoe portion 421 mated with the two upper bar-shaped pole shoe portions 411. When the movable contact works, when short-circuit current flows through the movable contact, magnetic lines of force around the movable contact are gathered on the lower short-circuit plate, a magnetic field is generated on the lower strip-shaped pole shoe surface of the lower short-circuit plate, and suction force is generated on the upper short-circuit plate, so that the movable contact can be prevented from being sprung. The upper short-circuit plate and the lower short-circuit plate are respectively provided with an upper strip-shaped pole shoe and a lower strip-shaped pole shoe which are matched with each other, so that the pole shoe areas of the upper short-circuit plate and the lower short-circuit plate can be increased, the mutual suction force between the upper short-circuit plate and the lower short-circuit plate is increased, and the short-circuit resistance and the impact resistance can be improved. The area of the lower bar-shaped pole shoe portion 421 is larger than that of the upper bar-shaped pole shoe portion 411. The area of the upper strip pole shoe part is increased, and the mutual suction force between the upper short circuit plate and the lower short circuit plate can be increased, so that the short circuit resistance and the impact resistance can be improved.
The ceramic cover is provided with a first magnetic steel group and a second magnetic steel group which are enclosed outside the contact points of the two fixed contacts and the moving contact respectively, and the first magnetic steel group and the second magnetic steel group are compact in structural design and smaller in volume. And the first magnetic steel group, the second magnetic steel group and the two contact points have smaller distance from the starting point to the arc point, the magnetic leakage is smaller, the magnetic field intensity of the starting point can be increased, and the arc extinguishing capability is stronger. Therefore, the high-voltage direct-current relay has the advantages of simple structure, stable and reliable performance, strong magnetic field strength of an arcing point and strong arc extinguishing capability.
The foregoing is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or be modified to equivalent embodiments, without departing from the scope of the technology. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.
Claims (6)
1. The utility model provides a magnet steel arc extinguishing's high voltage direct current relay, includes casing, electromagnetic drive mechanism, sets up ceramic cover on electromagnetic drive mechanism, sets up the contact subassembly in ceramic cover, contact subassembly include with electromagnetic drive mechanism linkage complex moving contact, two static contacts, its characterized in that: the ceramic cover outside correspond the contact point department of two stationary contacts and moving contact and be provided with first magnet steel group, second magnet steel group respectively, first magnet steel group include first yoke iron clamp, set up the first main magnet steel in first yoke iron clamp, set up in first yoke iron clamp and two first side magnet steels of symmetric distribution in first main magnet steel both sides, first main magnet steel, two first side magnet steels the magnetic pole towards the contact point the same, second magnet steel group include first yoke iron clamp, set up in first yoke iron clamp second main magnet steel, set up in second yoke iron clamp and two second side magnet steels of symmetric distribution in second main magnet steel both sides, second main magnet steel, two second side magnet steel the magnetic pole towards the contact point the same, first main magnet steel the magnetic pole towards the contact point with second main magnet steel the opposite of magnetic pole towards the contact point.
2. The magnetically-steel-quenched high-voltage direct-current relay according to claim 1, wherein: the first main magnet steel, two first side magnet steel laminate respectively on first yoke presss from both sides the inner wall, first main magnet steel and two first side magnet steel between be formed with enclose and close the first magnetic blow chamber outside one of them contact point, second main magnet steel, two second side magnet steel laminate respectively on second yoke presss from both sides the inner wall, second main magnet steel and two second side magnet steel between be formed with enclose and close the second magnetic blow chamber outside another contact point.
3. The magnetically-steel-quenched high-voltage direct-current relay according to claim 2, wherein: the first yoke iron clamp on correspond first main magnet steel both ends department and be provided with a stopper respectively, first main magnet steel block between two stopper, second yoke iron clamp on correspond second main magnet steel both ends department and be provided with a locating piece respectively, second main magnet steel block between two locating pieces.
4. The high voltage dc relay for magnetic steel arc extinction according to claim 1 or 2, characterized in that: the basic shapes of the first yoke iron clamp and the second yoke iron clamp are U-shaped, clamping grooves of the first yoke iron clamp and the second yoke iron clamp are respectively enclosed outside contact points of the two fixed contacts and the moving contact, and a gap is formed between the first yoke iron clamp and the second yoke iron clamp.
5. The high voltage dc relay for magnetic steel arc extinction according to claim 1 or 2, characterized in that: the movable contact on be provided with anti short circuit current subassembly, anti short circuit current subassembly including setting up the lower short circuit board on movable contact one side, set up on the movable contact opposite side short circuit board, set up the U type support between the push rod of last short circuit board and electromagnetic drive mechanism, set up the spring between push rod and lower short circuit board, lower short circuit board have two upper bar pole shoe portions that extend in the movable contact both sides, lower short circuit board have with two upper bar pole shoe portions matched with lower bar pole shoe portion.
6. The magnetically-steel-quenched high-voltage direct-current relay according to claim 5, wherein: the area of the lower strip-shaped pole shoe part is larger than that of the upper strip-shaped pole shoe part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320765084.2U CN219457479U (en) | 2023-04-08 | 2023-04-08 | High-voltage direct-current relay with magnetic steel arc extinction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320765084.2U CN219457479U (en) | 2023-04-08 | 2023-04-08 | High-voltage direct-current relay with magnetic steel arc extinction function |
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| Publication Number | Publication Date |
|---|---|
| CN219457479U true CN219457479U (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320765084.2U Active CN219457479U (en) | 2023-04-08 | 2023-04-08 | High-voltage direct-current relay with magnetic steel arc extinction function |
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| Country | Link |
|---|---|
| CN (1) | CN219457479U (en) |
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- 2023-04-08 CN CN202320765084.2U patent/CN219457479U/en active Active
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