CN109119293B - Direct current contactor contact system and direct current contactor - Google Patents
Direct current contactor contact system and direct current contactor Download PDFInfo
- Publication number
- CN109119293B CN109119293B CN201811050040.1A CN201811050040A CN109119293B CN 109119293 B CN109119293 B CN 109119293B CN 201811050040 A CN201811050040 A CN 201811050040A CN 109119293 B CN109119293 B CN 109119293B
- Authority
- CN
- China
- Prior art keywords
- contact
- movable
- direct current
- static
- current contactor
- 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.)
- Active
Links
- 230000003068 static effect Effects 0.000 claims abstract description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 6
- 230000005404 monopole Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
-
- 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
- H01H9/40—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model provides a direct current contactor contact system and this direct current contactor, contact system includes moving contact subassembly (1) and static contact subassembly (2), moving contact subassembly (1) with the joint and the disconnection of static contact subassembly (2) can control direct current contactor's break-make, its characterized in that: the movable contact assembly (1) and the static contact assembly (2) are connected in series in the shell to form a direct current contactor main loop with four fractures. According to the direct current contactor, two moving contact blades are arranged on one shaft inside the monopole contactor, the main loop adopts a series connection mode inside the monopole four-breakpoint shell, and the direct current contactor can cut off a high-voltage arc rapidly while the direct current contactor is small in size.
Description
Technical Field
The invention belongs to the technical field of direct current contactors, and particularly relates to a direct current contactor contact system and a direct current contactor.
Background
Dc contactors are commonly used in vehicles using a battery as an energy source to control a plurality of operations such as vehicle start and speed regulation. With the rapid development of electric vehicles, the rated voltage requirement of the market on the direct current contactor is higher and higher. Since the volume of the dc contactor is determined by the rated current, the contact space is closed. The most main factor affecting the switching-on and switching-off capacity of the direct current contactor is the switching-on voltage, and the higher the switching-on voltage of the direct current contactor is, the less likely the switching-on and switching-off is, the more difficult the conventional moving contact scheme is to meet the requirements of switching-on and switching-off high voltage.
Chinese patent grant publication number CN206250126U discloses a dc contactor, the dc contactor comprising: the direct current contactor comprises a moving contact and a fixed contact, wherein a space is reserved between the moving contact and the fixed contact, a magnetic part is arranged around the space, an arc extinguishing magnetic field is generated by the magnetic part, and a magnetic conduction part is arranged around the space and positioned at the outer side of the magnetic part so as to weaken the magnetic force at the outer side of the magnetic part; the edge magnetic flux leakage of one end of the permanent magnet is reduced, the magnetic field intensity of an arc extinguishing working area is enhanced, and therefore the arc extinguishing capability of a product is improved. However, when the direct current contactor is used in a high-voltage occasion, the problem that the arc is continuously burnt in breaking exists.
Disclosure of Invention
The invention aims to solve the technical problem that when the existing direct current contactor is used for switching on and switching off direct current high voltage, the electric arc is difficult to extinguish, and provides a direct current contactor contact system and the direct current contactor.
Technical proposal
In order to achieve the technical purpose, the invention provides a direct current contactor contact system, which comprises a moving contact assembly and a static contact assembly, wherein the connection and disconnection of the moving contact assembly and the static contact assembly can control the on-off of the direct current contactor, and the direct current contactor contact system is characterized in that: the movable contact assembly and the static contact assembly are connected in series inside the shell to form a direct current contactor main loop with four breaks.
Further, the movable contact assembly and the fixed contact assembly are connected in series inside the shell to form a U-shaped or Z-shaped main loop.
Further, the moving contact assembly comprises a moving contact I and a moving contact II, the moving contact I and the moving contact II are respectively arranged in step grooves at two sides of a supporting plate, and the supporting plate is arranged on the end head of the shaft;
the fixed contact assembly comprises a fixed contact I, a fixed contact II and a fixed contact III, the fixed contacts of the fixed contact I and the fixed contact II respectively correspond to the movable contacts at two ends on one of the diagonals at two ends of the movable contact I and the movable contact II, and the two fixed contacts of the fixed contact III respectively correspond to the movable contacts at two ends on the other of the diagonals at two ends of the movable contact I and the movable contact II to form a Z-shaped main loop.
Further, the fixed contacts of the first fixed contact and the second fixed contact respectively correspond to the movable contacts at two ends of the same side of the first movable contact and the second movable contact, and the two fixed contacts of the third fixed contact respectively correspond to the movable contacts at two ends of the other side of the first movable contact and the second movable contact to form a U-shaped main loop.
Further, the first moving contact and the second moving contact are respectively arranged at the raised parts in the step grooves at the two sides of the supporting plate and can swing up and down.
The invention also provides a direct current contactor comprising the contact system, which is characterized in that: the fixed contact assembly is arranged on the fixed contact support, the fixed contact support is fixedly arranged on the insulating piece, the insulating piece is fixedly arranged on the armature one, the armature one is arranged on the upper end face of the electromagnetic coil framework, the contact spring is sleeved on the shaft, one end of the contact spring is propped against the supporting plate, the other end of the contact spring is propped against the boss on the shaft, the other end of the shaft penetrates through the insulating piece and the armature one and is provided with the movable iron core, and the counter-force spring is sleeved on the shaft and can reset the movable iron core;
the fixed contact support is arranged at the mouth part of the magnetic yoke to form a sealing cavity, the fixed contact I and the fixed contact II are inserted and arranged on the fixed contact support, one end of the fixed contact I and the fixed contact II extend into the sealing cavity to correspond to the moving contact component, the other end of the fixed contact I and the fixed contact II extend out of the magnetic yoke, the electromagnetic coil framework is arranged at the bottom of the magnetic yoke, the first spring clamping piece is arranged on the shaft outside the moving iron core to limit, the moving iron core is arranged in the inner cavity of the electromagnetic coil framework, the armature II is arranged between the moving iron core and the electromagnetic coil framework, the magnetic yoke is arranged in the shell, and the armature III is arranged between the bottom of the shell and the magnetic yoke.
Further, the permanent magnet is arranged on the fixed contact support and positioned outside the fixed contact assembly.
Further, a second spring card is arranged on the shaft at the outer side end of the supporting plate for limiting.
Advantageous effects
The invention provides a direct current contactor contact system and a direct current contactor, wherein two moving contact blades are arranged on one shaft in a monopole contactor, a main loop adopts a series connection mode in a monopole four-breakpoint shell, and the direct current contactor can cut off high-voltage electric arcs rapidly while achieving small volume.
Drawings
FIG. 1 is a schematic diagram of a DC contactor in embodiment 1 of the present invention;
FIG. 2 is a schematic view of the contact system in embodiment 1 of the present invention;
FIG. 3 is a diagram showing the production of a movable contact assembly according to embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of the structure of a moving contact assembly in embodiment 1 of the present invention;
FIG. 5 is a schematic view showing the position of the protrusions in embodiment 1 of the present invention;
FIG. 6 is a schematic view showing the structure of a supporting member in embodiment 1 of the present invention;
FIG. 7 is a schematic diagram of a interrupt according to embodiment 1 of the present invention;
fig. 8 is a schematic view of the structure of a contact system in embodiment 2 of the present invention;
FIG. 9 is a schematic diagram of a interrupt according to embodiment 2 of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1
The invention provides a direct current contactor contact system which comprises a moving contact assembly 1 and a fixed contact assembly 2, wherein the connection and disconnection of the moving contact assembly 1 and the fixed contact assembly 2 can control the on-off of a direct current contactor, and the moving contact assembly 1 and the fixed contact assembly 2 are connected in series inside a shell to form a direct current contactor main loop with four breaks.
Specifically, as shown in fig. 2,3,4,5 and 6, the moving contact assembly 1 includes a first moving contact 101 and a second moving contact 102, the first moving contact 101 and the second moving contact 102 are respectively mounted at the protrusions 301a,301a 'in the step grooves 301,301' on both sides of the supporting plate 3 and can swing up and down, and the supporting plate 3 is mounted on the end of the shaft 4;
as shown in fig. 2, the static contact assembly 2 includes a first static contact 201, a second static contact 202 and a third static contact 203, the static contacts of the first static contact 201 and the second static contact 202 respectively correspond to the moving contacts at two ends on one of the diagonal lines at two ends of the first moving contact 101 and the second moving contact 102, and the two static contacts 203a,203a' of the third static contact 203 respectively correspond to the moving contacts at two ends on the other of the diagonal lines at two ends of the first moving contact 101 and the second moving contact 102 to form a zigzag main loop.
As shown in fig. 7, in the working process of the embodiment, when the contactor is in an on state, the moving contact assembly 1 and the fixed contact assembly 2 are connected to form a complete zigzag main loop path, and a schematic diagram of the current path is shown in fig. 7. When the contactor is just started to break, four breaks of the main circuit are simultaneously broken, electric arcs are generated at the breaks, the electric arcs are rapidly lengthened and cooled under the action of the increase of the distance between the internal magnet and the break, and then arc extinction is achieved, so that safe breaking of the direct current contactor is achieved.
Example 2
The present invention further provides an embodiment, as shown in fig. 8, the stationary contacts of the first stationary contact 201 and the second stationary contact 202 respectively correspond to the movable contacts of the two ends of the same side of the first movable contact 101 and the second movable contact 102, and the two stationary contacts 203a,203a' of the third stationary contact 203 respectively correspond to the movable contacts of the two ends of the other side of the first movable contact 101 and the second movable contact 102 to form a U-shaped main loop.
As shown in fig. 9, in the working process of this embodiment, when the contactor is in an on state, the moving contact assembly 1 and the fixed contact assembly 2 are connected to form a complete U-shaped main circuit path, and a schematic diagram of the current path is shown in fig. 9. When the contactor is just started to break, four breaks of the main circuit are simultaneously broken, electric arcs are generated at the breaks, the electric arcs are rapidly lengthened and cooled under the action of the increase of the distance between the internal magnet and the break, and then arc extinction is achieved, so that safe breaking of the direct current contactor is achieved.
As shown in fig. 1, the invention also provides a direct current contactor comprising the contact system, the static contact assembly 2 is arranged on the static contact support 5, the static contact support 5 is fixedly arranged on the insulating piece 6, the insulating piece 6 is fixedly arranged on the armature I7, the armature I7 is arranged on the upper end face of the electromagnetic coil framework 8, the contact spring 9 is sleeved on the shaft 4, one end of the contact spring is propped against the supporting plate 3, the other end of the contact spring is propped against the boss 401 on the shaft 4, the other end of the shaft 4 is provided with the movable iron core 10 through the insulating piece 6 and the armature I7, and the counter spring 11 is sleeved on the shaft 4 and can reset the movable iron core 10;
the static contact support 5 is arranged at the mouth part of the magnetic yoke 12 to form a sealing cavity, the static contact I201 and the static contact II 202 are inserted and arranged on the static contact support 5, one end of the static contact I extends into the sealing cavity to correspond to the moving contact component 1, the other end of the static contact I extends out of the magnetic yoke 12, the electromagnetic coil framework 8 is arranged at the bottom of the magnetic yoke 12, the first spring clamping piece 13 is arranged on the shaft 4 at the outer side of the moving iron core 10 to limit, the moving iron core 10 is arranged in the inner cavity of the electromagnetic coil framework 8, the armature II 14 is arranged between the moving iron core 10 and the electromagnetic coil framework 8, the magnetic yoke 12 is arranged in the shell 15, and the armature III 16 is arranged between the bottom of the shell 15 and the magnetic yoke 12.
The permanent magnet 17 is arranged on the fixed contact support 5 and is positioned outside the fixed contact assembly 2.
And a second spring card 18 is arranged on the shaft 4 at the outer side end of the supporting plate 3 for limiting.
The invention provides a direct current contactor contact system and a direct current contactor, wherein two moving contact blades are arranged on one shaft in a monopole contactor, a main loop adopts a series connection mode in a monopole four-breakpoint shell, and the direct current contactor can cut off high-voltage electric arcs rapidly while achieving small volume.
The structures, proportions, sizes, amounts, etc. shown in the drawings of the embodiments of the present invention are for illustration and description only, and should not be construed as limiting the invention, so that any structural modifications, proportional changes, or adjustments of size may fall within the scope of the invention without affecting the efficacy and achievement of the invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "anticlockwise" and the like are used in the present specification for convenience of description, and are not intended to limit the scope of the present invention, and the relative relation changes or modifications thereof are considered to be within the scope of the present invention without substantial modification of the technical content.
Claims (7)
1. The utility model provides a direct current contactor contact system, it includes moving contact subassembly (1) and stationary contact subassembly (2), the joint and the disconnection of moving contact subassembly (1) with stationary contact subassembly (2) can control the break-make of direct current contactor, its characterized in that: the movable contact assembly (1) and the static contact assembly (2) are connected in series in the shell to form a direct current contactor main loop with four fractures;
the movable contact assembly (1) and the static contact assembly (2) are connected in series inside the shell to form a U-shaped or Z-shaped main loop.
2. A dc contactor contact system as claimed in claim 1, wherein: the movable contact assembly (1) comprises a first movable contact (101) and a second movable contact (102), the first movable contact (101) and the second movable contact (102) are respectively arranged in step grooves (301,301') on two sides of a supporting plate (3), and the supporting plate (3) is arranged on the end head of a shaft (4);
the static contact assembly (2) comprises a first static contact (201), a second static contact (202) and a third static contact (203), the static contacts of the first static contact (201) and the second static contact (202) respectively correspond to the movable contacts at two ends on one of the diagonals at two ends of the first movable contact (101) and the second movable contact (102), and the two static contacts (203 a,203 a') of the third static contact (203) respectively correspond to the movable contacts at two ends on the other of the diagonals at two ends of the first movable contact (101) and the second movable contact (102) to form a Z-shaped main loop.
3. A dc contactor contact system as claimed in claim 2, wherein: the fixed contacts of the first fixed contact (201) and the second fixed contact (202) respectively correspond to the movable contacts at two ends of the same side of the first movable contact (101) and the second movable contact (102), and the two fixed contacts (203 a,203 a') of the third fixed contact (203) respectively correspond to the movable contacts at two ends of the other side of the first movable contact (101) and the second movable contact (102) to form a U-shaped main loop.
4. A dc contactor contact system as claimed in claim 2, wherein: the first moving contact (101) and the second moving contact (102) are respectively arranged at the positions of the protrusions (301 a,301a ') in the step grooves (301,301') at the two sides of the supporting plate (3) and can swing up and down.
5. A direct current contactor, characterized in that: the contact system comprises the contact system according to any one of claims 1-4, wherein the fixed contact assembly (2) is arranged on the fixed contact support (5), the fixed contact support (5) is fixedly arranged on an insulating piece (6), the insulating piece (6) is fixedly arranged on an armature I (7), the armature I (7) is arranged on the upper end face of an electromagnetic coil framework (8), one end of a contact spring (9) is sleeved on a shaft (4) to prop against a supporting plate (3), the other end of the contact spring is propped against a boss (401) on the shaft (4), a movable iron core (10) is arranged at the other end of the shaft (4) through the insulating piece (6) and the armature I (7), and a counter force spring (11) is sleeved on the shaft (4) to reset the movable iron core (10);
the static contact support (5) is arranged at the opening part of the magnetic yoke (12) to form a sealing cavity, the static contact I (201) and the static contact II (202) are inserted and arranged on the static contact support (5), one end of the static contact I (201) extends into the sealing cavity to correspond to the moving contact component (1), the other end of the static contact support extends out of the magnetic yoke (12), the electromagnetic coil framework (8) is arranged at the bottom of the magnetic yoke (12), the first spring clamping piece (13) is arranged on the shaft (4) at the outer side of the movable iron core (10) to limit, the movable iron core (10) is arranged in the inner cavity of the electromagnetic coil framework (8), the armature II (14) is arranged between the movable iron core (10) and the electromagnetic coil framework (8), the magnetic yoke (12) is arranged in the shell (15), and the armature III (16) is arranged between the bottom of the shell (15) and the magnetic yoke (12).
6. The dc contactor as claimed in claim 5, wherein: the permanent magnet (17) is arranged on the fixed contact support (5) and is positioned outside the fixed contact assembly (2).
7. The dc contactor as claimed in claim 5, wherein: and a second spring card (18) is arranged on the shaft (4) at the outer side end of the supporting plate (3) for limiting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050040.1A CN109119293B (en) | 2018-09-10 | 2018-09-10 | Direct current contactor contact system and direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050040.1A CN109119293B (en) | 2018-09-10 | 2018-09-10 | Direct current contactor contact system and direct current contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109119293A CN109119293A (en) | 2019-01-01 |
| CN109119293B true CN109119293B (en) | 2024-03-15 |
Family
ID=64858223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811050040.1A Active CN109119293B (en) | 2018-09-10 | 2018-09-10 | Direct current contactor contact system and direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109119293B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491729A (en) * | 2019-07-31 | 2019-11-22 | 贵州天义技术有限公司 | A kind of 5G communication base station 1U400A bistable contactor |
| CN113471023A (en) * | 2021-07-27 | 2021-10-01 | 上海电机学院 | Direct current contactor contact device and direct current contactor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH211549A (en) * | 1938-06-14 | 1940-09-30 | Hermes Patentverwertungs Gmbh | Contact arrangement for switching resp. Control units. |
| CN200962406Y (en) * | 2006-07-03 | 2007-10-17 | 正泰集团股份有限公司 | Gas sealing low voltage electrical appliance with the operation contact |
| CN101840815A (en) * | 2010-05-18 | 2010-09-22 | 沈阳二一三控制电器制造有限公司 | High dielectric voltage withstand direct-current contactor |
| CN203192711U (en) * | 2013-04-16 | 2013-09-11 | 施耐德电器工业公司 | Contactor |
| CN106531554A (en) * | 2016-11-08 | 2017-03-22 | 仲大卫 | Arcless breaking device of contactor, contactor and arcless breaking method |
| CN209199848U (en) * | 2018-09-10 | 2019-08-02 | 上海良信电器股份有限公司 | A kind of D.C. contactor contact system and the D.C. contactor |
-
2018
- 2018-09-10 CN CN201811050040.1A patent/CN109119293B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH211549A (en) * | 1938-06-14 | 1940-09-30 | Hermes Patentverwertungs Gmbh | Contact arrangement for switching resp. Control units. |
| CN200962406Y (en) * | 2006-07-03 | 2007-10-17 | 正泰集团股份有限公司 | Gas sealing low voltage electrical appliance with the operation contact |
| CN101840815A (en) * | 2010-05-18 | 2010-09-22 | 沈阳二一三控制电器制造有限公司 | High dielectric voltage withstand direct-current contactor |
| CN203192711U (en) * | 2013-04-16 | 2013-09-11 | 施耐德电器工业公司 | Contactor |
| CN106531554A (en) * | 2016-11-08 | 2017-03-22 | 仲大卫 | Arcless breaking device of contactor, contactor and arcless breaking method |
| WO2018086366A1 (en) * | 2016-11-08 | 2018-05-17 | 仲大卫 | Arcless breaking device of contactor, contactor, and arcless breaking method |
| CN209199848U (en) * | 2018-09-10 | 2019-08-02 | 上海良信电器股份有限公司 | A kind of D.C. contactor contact system and the D.C. contactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109119293A (en) | 2019-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109119293B (en) | Direct current contactor contact system and direct current contactor | |
| CN107946133B (en) | Quick separating brake mechanism and hybrid alternating current circuit breaker | |
| CN107578938B (en) | Low-voltage circuit breaker | |
| CN209199848U (en) | A kind of D.C. contactor contact system and the D.C. contactor | |
| CN202076163U (en) | Miniature circuit breaker | |
| CN110379670B (en) | High-current-capacity vacuum arc extinguish chamber with fixed fracture | |
| CN107393779A (en) | A kind of AC/DC omnipotent breaker with stronger arc quenching effect | |
| WO2023036062A1 (en) | High-voltage direct current (dc) relay capable of enhancing arc extinguishing capability | |
| CN109494132B (en) | Double-contact molded case circuit breaker | |
| CN109119291B (en) | Arc extinguishing structure of direct current contactor | |
| CN201749830U (en) | MCB capable of opening and closing neutral pole | |
| CN202651039U (en) | Miniature breaker | |
| CN210443488U (en) | Load switch | |
| CN219350124U (en) | Circuit breaker structure with high breaking capacity | |
| CN107359081A (en) | A kind of method and switching device of motor driving bridging contact on-load switch | |
| CN207303017U (en) | A kind of AC and DC omnipotent breaker with stronger arc quenching effect | |
| CN207149504U (en) | A kind of Minitype electrical leakage breaker N poles arc quenching system | |
| CN201868348U (en) | Direct-current contactor | |
| CN219998123U (en) | Arc extinguishing structure of contactor contact | |
| CN205911274U (en) | Miniature circuit breaker galvanic circle improvement structure | |
| CN213815895U (en) | Arc control device and circuit breaker | |
| CN212322938U (en) | Simple bistable magnetic shield structure | |
| CN216054546U (en) | Circuit breaker | |
| CN212695087U (en) | Contact arc-extinguishing device of circuit breaker with improved structure | |
| CN212990992U (en) | High-voltage direct-current contactor with air pressure detection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |