CN113948338A - Auxiliary switch device of ceramic direct current contactor and contactor - Google Patents
Auxiliary switch device of ceramic direct current contactor and contactor Download PDFInfo
- Publication number
- CN113948338A CN113948338A CN202111007747.6A CN202111007747A CN113948338A CN 113948338 A CN113948338 A CN 113948338A CN 202111007747 A CN202111007747 A CN 202111007747A CN 113948338 A CN113948338 A CN 113948338A
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- magnetic body
- contactor
- magnetic
- reed switch
- auxiliary
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- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 60
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 244000273256 Phragmites communis Species 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
-
- 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
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The invention provides an auxiliary switch device of a ceramic direct current contactor and the contactor, relating to the technical field of direct current contactors; the auxiliary switching device specifically includes: when the contactor is powered off, the second magnetic body moves axially along the direction deviating from the bottom of the first magnetic body, and a magnetic field loop does not pass through two ends of the magnetic reed switch, so that the auxiliary switch device is switched off; when the contactor is electrified, the second magnetic body axially moves along the direction towards the bottom of the first magnetic body and blocks the magnetic field loop, so that the magnetic field loop passes through two ends of the magnetic reed switch, and the auxiliary switch device is closed. The invention solves the problems that the state of the contactor cannot be monitored in a background mode, the maintenance is complex and the like in the related technology, and provides the auxiliary switching device of the ceramic direct current contactor and the contactor.
Description
Technical Field
The invention relates to the field of direct current contactors, in particular to an auxiliary switching device of a ceramic direct current contactor and the contactor.
Background
Along with the development of new energy automobiles, the battery charging and charging pile technology of pure electric vehicles becomes more important, and in the hardware circuit of a charging part, a direct current contactor is one of important components, the direct current contactor is widely applied due to low cost and simple process, but the contactor has poor temperature resistance and strength and risks of explosion, and the ceramic direct current contactor has good structural strength and good temperature resistance, slowly replaces a direct contactor and is applied to the battery charging technology.
Ceramic direct current contactor is in using to fill electric pile or pure electric vehicle's battery device, and ceramic direct current contactor among the prior art does not design auxiliary switch, consequently when the vehicle or fill electric pile occasional charging failure, the state of unable backstage monitoring contactor, when meetting charging failure, the circuit investigation is complicated, leads to maintenance efficiency low.
Disclosure of Invention
The invention provides an auxiliary switch device of a ceramic direct current contactor and a technical scheme of the contactor, and aims to effectively improve or even solve the background monitoring problem of the contactor and improve the charging fault maintenance efficiency.
According to the present invention, there is provided an auxiliary switching device of a ceramic dc contactor, applied to the ceramic dc contactor, wherein the auxiliary switching device includes:
the first magnetic body is internally provided with a cavity, and the side surface of the first magnetic body is provided with a notch;
the second magnetic body is arranged in the cavity and reciprocates along the axial direction of the first magnetic body;
the magnetic reed switch is arranged at the bottom of the first magnetic body and used for controlling the working state of the auxiliary switch device;
the third magnetic body is provided with a step surface, and the step surface faces to the bottom of the first magnetic body and is connected with the magnetic reed switch;
the permanent magnet is arranged on the step surface and naturally attracted with the step surface;
when the contactor is powered off, the second magnetic body axially moves along a direction departing from the bottom of the first magnetic body, the second magnetic body, the third magnetic body and the permanent magnet form a magnetic field loop, and the magnetic field loop does not pass through two ends of the reed switch, so that the reed switch is switched off, and the auxiliary switch device is switched off;
when the contactor is electrified, the second magnetic body axially moves along the direction towards the bottom of the first magnetic body and blocks the magnetic field loop, so that the magnetic field loop passes through two ends of the magnetic reed switch, the magnetic reed switch is closed, and the auxiliary switch device is closed.
Further, the auxiliary switch device further comprises a connecting support, and the first magnetic body, the third magnetic body and the magnetic reed switch are respectively matched with a groove which is formed in the connecting support in a pre-arranged embedding manner.
Further, this auxiliary switch device, wherein still includes a shell, the inside mounting hole that is provided with of shell, with first magnetic substance interference fit.
Further, this auxiliary switch device, wherein, the notch is U type notch, the notch is 2, for the symmetry setting.
Further, in the auxiliary switch device, a moving opening is formed in the bottom of the first magnetic body, the moving opening is a countersink, and the second magnetic body moves in a reciprocating axial direction along the moving opening.
Further, the auxiliary switch device, wherein, two ends of the magnetic reed switch are respectively provided with a reed;
when the magnetic field loop does not pass through the reed switch, the reeds are separated to open the reed switch, so that the auxiliary switch device is opened;
when the magnetic field loop passes through the reed switch, the reed contact closes the reed switch, so that the auxiliary switch device is closed.
Further, the auxiliary switch device, wherein the second magnetic body further comprises an iron core end, a spring and a shaft assembly, the spring is sleeved on the shaft assembly, and one end of the shaft assembly is arranged in the accommodating hole which is preset in the iron core end and matched with the iron core end.
Further, the auxiliary switch device, wherein the shaft assembly and the iron core end are in welded fit.
Further, this auxiliary switch device, wherein, the linking bridge is the injection molding of integrated into one piece.
A ceramic dc contactor comprising the auxiliary switching device of any one of the above.
The auxiliary switch device of the ceramic direct current contactor and the contactor provided by the invention have the following beneficial effects:
1) monitoring the state of the contactor in a real-time background manner;
2) and the charging fault maintenance efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention
In the figure:
FIG. 1 is a schematic diagram of an auxiliary switch device according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the auxiliary switching device closing in a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of the auxiliary switching device being open in accordance with a preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of the structure of the auxiliary switch device according to the preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Among the prior art, ceramic direct current contactor does not design auxiliary switch, consequently when the vehicle or fill electric pile accident charging fault, the state of unable backstage monitoring contactor, when meetting charging fault, the circuit investigation is complicated, leads to maintenance inefficiency.
Therefore, the invention discloses an auxiliary switch device of a ceramic direct current contactor, which aims to solve the problems in the prior art.
In the present embodiment, there is provided an auxiliary switching device of a ceramic dc contactor, which is applied to the ceramic dc contactor, as shown in fig. 1, the auxiliary switching device including:
the first magnetic body 5, there is a cavity in the first magnetic body 5, the first magnetic body 5 side is slotted;
the second magnetic body 4 is arranged in the cavity and reciprocates along the axial direction of the first magnetic body 5;
a reed switch 1 disposed at the bottom of the first magnetic body 5 for controlling the operating state of the auxiliary switching device;
a third magnetic body 2, wherein a step surface is arranged on the third magnetic body 2, faces to the bottom of the first magnetic body 5 and is connected with the reed switch 1;
the permanent magnet 3 is arranged on the step surface and naturally attracted with the step surface;
when the contactor is powered off, the second magnetic body 4 axially moves along the direction departing from the bottom of the first magnetic body 5, the second magnetic body 4, the third magnetic body 2 and the permanent magnet 3 form a magnetic field loop, and the magnetic field loop does not pass through two ends of the reed switch 1, so that the reed switch 1 is switched off, and the auxiliary switch device is switched off;
when the contactor is energized, the second magnetic body 4 moves axially in a direction toward the bottom of the first magnetic body 5 and blocks the magnetic field circuit so that the magnetic field circuit passes through both ends of the reed switch 1, so that the reed switch 1 is closed and the auxiliary switching device is closed.
Specifically, in the present embodiment, the first magnetic body 5 is a stationary member with respect to the second magnetic body 4.
Specifically, in the present embodiment, when the contactor is de-energized, as shown in fig. 2, the first magnetic body 5, the second magnetic body 4, the third magnetic body 2, and the permanent magnet 3 form a magnetic field loop as a closed magnetic field loop, and a magnetic field direction of the closed magnetic field loop is along N stages of the permanent magnet 3, and sequentially passes through S stages of the third magnetic body 2, the first magnetic body 5, the second magnetic body 4, the third magnetic body 2, and the permanent magnet 3.
Specifically, in the present embodiment, when the contactor is energized, as shown in fig. 3, the closed magnetic field loop is blocked by the second magnetic body 4, and is dispersedly transmitted through a part of the magnetic field at both ends of the permanent magnet 3, and the magnetic field loop passes through both ends of the reed switch 1.
Specifically, in this embodiment, the first magnetic body 5 and the second magnetic body 4 are low-carbon steel or silicon steel sheets.
Specifically, in this embodiment, the permanent magnet 3 is a circular magnetic steel, and the third magnetic body is a magnetizer.
In the preferred embodiment of the present invention, as shown in fig. 4, the magnetic switch further comprises a connecting bracket 6, and the first magnetic body 5, the third magnetic body 2 and the reed switch 1 are respectively engaged with the pre-arranged grooves of the connecting bracket 6.
Specifically, in this embodiment, the bottom of the connecting bracket 6 is provided with 3 grooves, which are respectively assembled with the first magnetic body 5, the reed switch 1, the third magnetic body 2 and the permanent magnet 3 after being naturally attracted.
Specifically, in this embodiment, the connecting bracket 6 has a hollow structure, and the bottom of the first magnetic body 5 is disposed in the hollow of the connecting bracket 6.
In the preferred embodiment of the present invention, the magnetic switch further comprises a housing 10, and a mounting hole is disposed inside the housing 10 and is in interference fit with the first magnetic body 5.
Specifically, in the present embodiment, the housing 10 is a plastic part.
Specifically, in this embodiment, after the reed switch 1, the permanent magnet 3 and the third magnetic body 2 are connected by the connecting bracket 6, the first magnetic body 5 is embedded and matched, and then the first magnetic body 5 is placed in the mounting hole of the housing 10 from the bottom of the housing 10 and is in interference fit with the housing 10.
Specifically, in this embodiment, the second magnetic body 4 includes an iron core end 7, a spring 8 and a shaft assembly 9, the spring 8 is respectively engaged with the shaft assembly 9 and the iron core end 7, and the engagement is a clearance engagement, and the shaft assembly 9 is engaged with the iron core end 7 in an embedded manner, and the engagement is a welding engagement.
In the preferred embodiment of the present invention, the notches are U-shaped notches, and 2 notches are symmetrically arranged.
In the preferred embodiment of the present invention, the bottom of the first magnetic body 5 is provided with a moving port, the moving port is countersunk, and the second magnetic body 4 reciprocates axially along the moving port.
Specifically, in this embodiment, the second magnetic body 4 performs reciprocating axial movement along the movement opening, and the shaft assembly 9 drives the iron core end 7 to perform reciprocating axial movement along the movement opening of the first magnetic body 5.
In a preferred embodiment of the present invention, two ends of the reed switch 1 are respectively provided with a reed;
when the magnetic field loop does not pass through the magnetic reed switch 1, the reeds are separated to disconnect the magnetic reed switch 1, so that the auxiliary switch device is disconnected;
when the magnetic field loop passes through the reed switch 1, the reed contact closes the reed switch 1, so that the auxiliary switch device is closed.
Specifically, in this embodiment, the reed switch 1 is a single-pole single-throw reed switch, and when a magnetic field loop passes through two ends of the reed switch 1, a magnetic field force value generated reaches the elastic force of the reed itself, and then the reed contacts with the reed, so that the reed switch 1 is closed.
Specifically, in this embodiment, when the magnetic field loop does not pass through the two ends of the reed switch 1 or the magnetic force value passing through the two ends of the reed switch 1 is weakened or disappeared, the reed is disconnected, so that the reed switch 1 is disconnected.
In a preferred embodiment of the present invention, the second magnetic body 4 further includes a core end 7, a spring 8 and a shaft assembly 9, the spring 8 is sleeved on the shaft assembly 9, and one end of the shaft assembly 9 is disposed in a receiving hole pre-disposed in the core end 7 and is engaged therewith.
Specifically, in this embodiment, the shaft assembly 9 is made of stainless steel, the shaft assembly 9 is a cylindrical structure, and the lower end of the shaft assembly 9 is disposed in the accommodating hole of the core end 7.
In the preferred embodiment of the present invention, the shaft assembly 9 is welded to the core end 7.
In the preferred embodiment of the invention, the connecting bracket 6 is an integrally molded injection molded part.
In a preferred embodiment of the present invention, there is also provided a ceramic dc contactor including the auxiliary switching device as set forth in any one of the above.
More details of the implementation of the ceramic dc contactor are already disclosed in the auxiliary switching device, and the details of this embodiment are not repeated.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. An auxiliary switching device of a ceramic DC contactor, which is applied to the ceramic DC contactor, is characterized in that the auxiliary switching device comprises:
the first magnetic body is internally provided with a cavity, and the side surface of the first magnetic body is provided with a notch;
the second magnetic body is arranged in the cavity and reciprocates along the axial direction of the first magnetic body;
the magnetic reed switch is arranged at the bottom of the first magnetic body and used for controlling the working state of the auxiliary switch device;
the third magnetic body is provided with a step surface, and the step surface faces to the bottom of the first magnetic body and is connected with the magnetic reed switch;
the permanent magnet is arranged on the step surface and naturally attracted with the step surface;
when the contactor is powered off, the second magnetic body axially moves along a direction departing from the bottom of the first magnetic body, the second magnetic body, the third magnetic body and the permanent magnet form a magnetic field loop, and the magnetic field loop does not pass through two ends of the reed switch, so that the reed switch is switched off, and the auxiliary switch device is switched off;
when the contactor is electrified, the second magnetic body axially moves along the direction towards the bottom of the first magnetic body and blocks the magnetic field loop, so that the magnetic field loop passes through two ends of the magnetic reed switch, the magnetic reed switch is closed, and the auxiliary switch device is closed.
2. The auxiliary switch device as claimed in claim 1, further comprising a connection bracket, wherein the first magnetic body, the third magnetic body and the reed switch are respectively fitted into a predetermined recess of the connection bracket.
3. An auxiliary switch device as claimed in claim 1, further comprising a housing, wherein a mounting hole is formed in the housing to be interference-fitted with the first magnetic body.
4. An auxiliary switching device as claimed in claim 1, wherein the notches are U-shaped notches, and the number of the notches is 2, and the notches are symmetrically arranged.
5. The auxiliary switching device as claimed in claim 1, wherein the first magnetic body has a moving port formed at a bottom thereof, the moving port being countersunk, and the second magnetic body axially reciprocates along the moving port.
6. The auxiliary switching device as claimed in claim 1, wherein a spring plate is provided at each of both ends of the reed switch;
when the magnetic field loop does not pass through the reed switch, the reeds are separated to open the reed switch, so that the auxiliary switch device is opened;
when the magnetic field loop passes through the reed switch, the reed contact closes the reed switch, so that the auxiliary switch device is closed.
7. The auxiliary switching device as claimed in claim 1, wherein the second magnetic body further comprises a core end, a spring and a shaft assembly, the spring is sleeved on the shaft assembly, and one end of the shaft assembly is disposed in the receiving hole preset in the core end and is engaged with the receiving hole.
8. The auxiliary switching device of claim 7 wherein the shaft assembly is a welded fit with the core end.
9. An auxiliary switching device according to claim 2, wherein the connection bracket is an integrally molded injection molded part.
10. A ceramic dc contactor, characterized by comprising an auxiliary switching device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111007747.6A CN113948338B (en) | 2021-08-30 | 2021-08-30 | Auxiliary switching device of ceramic direct-current contactor and contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111007747.6A CN113948338B (en) | 2021-08-30 | 2021-08-30 | Auxiliary switching device of ceramic direct-current contactor and contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113948338A true CN113948338A (en) | 2022-01-18 |
| CN113948338B CN113948338B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111007747.6A Active CN113948338B (en) | 2021-08-30 | 2021-08-30 | Auxiliary switching device of ceramic direct-current contactor and contactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN113948338B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1074437A (en) * | 1996-08-30 | 1998-03-17 | Harman Co Ltd | Contact device |
| KR19990065899A (en) * | 1998-01-19 | 1999-08-05 | 이종수 | Auxiliary contact device with reed switch of magnetic contactor |
| KR100899432B1 (en) * | 2008-09-02 | 2009-05-27 | 주식회사 케이디파워 | An economy in power consumption type electromagnetic contactor |
| CN104091727A (en) * | 2014-07-17 | 2014-10-08 | 昆山国力真空电器有限公司 | Auxiliary contact for DC contactor |
| CN204011293U (en) * | 2014-07-17 | 2014-12-10 | 昆山国力真空电器有限公司 | D.C. contactor auxiliary contact |
| CN106601553A (en) * | 2017-01-09 | 2017-04-26 | 上海西艾爱电子有限公司 | DC contactor |
| CN208970445U (en) * | 2018-09-17 | 2019-06-11 | 深圳市品川能源电气有限公司 | A kind of higfh-tension ceramics seal DC contactor with auxiliary contact |
| CN109872922A (en) * | 2019-04-02 | 2019-06-11 | 浙江众信新能源科技股份有限公司 | A kind of D.C. contactor with auxiliary switch |
| CN209822515U (en) * | 2019-04-02 | 2019-12-20 | 浙江众信新能源科技股份有限公司 | Ceramic seal auxiliary switch for direct current contactor |
| WO2020043516A1 (en) * | 2018-08-28 | 2020-03-05 | Tdk Electronics Ag | Switching device |
| CN111613485A (en) * | 2020-06-18 | 2020-09-01 | 贵州航天电器股份有限公司 | High voltage direct current contactor |
-
2021
- 2021-08-30 CN CN202111007747.6A patent/CN113948338B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1074437A (en) * | 1996-08-30 | 1998-03-17 | Harman Co Ltd | Contact device |
| KR19990065899A (en) * | 1998-01-19 | 1999-08-05 | 이종수 | Auxiliary contact device with reed switch of magnetic contactor |
| KR100899432B1 (en) * | 2008-09-02 | 2009-05-27 | 주식회사 케이디파워 | An economy in power consumption type electromagnetic contactor |
| CN104091727A (en) * | 2014-07-17 | 2014-10-08 | 昆山国力真空电器有限公司 | Auxiliary contact for DC contactor |
| CN204011293U (en) * | 2014-07-17 | 2014-12-10 | 昆山国力真空电器有限公司 | D.C. contactor auxiliary contact |
| CN106601553A (en) * | 2017-01-09 | 2017-04-26 | 上海西艾爱电子有限公司 | DC contactor |
| WO2020043516A1 (en) * | 2018-08-28 | 2020-03-05 | Tdk Electronics Ag | Switching device |
| CN208970445U (en) * | 2018-09-17 | 2019-06-11 | 深圳市品川能源电气有限公司 | A kind of higfh-tension ceramics seal DC contactor with auxiliary contact |
| CN109872922A (en) * | 2019-04-02 | 2019-06-11 | 浙江众信新能源科技股份有限公司 | A kind of D.C. contactor with auxiliary switch |
| CN209822515U (en) * | 2019-04-02 | 2019-12-20 | 浙江众信新能源科技股份有限公司 | Ceramic seal auxiliary switch for direct current contactor |
| CN111613485A (en) * | 2020-06-18 | 2020-09-01 | 贵州航天电器股份有限公司 | High voltage direct current contactor |
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| Publication number | Publication date |
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| CN113948338B (en) | 2024-02-09 |
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