CN113948338B - Auxiliary switching device of ceramic direct-current contactor and contactor - Google Patents
Auxiliary switching device of ceramic direct-current contactor and contactor Download PDFInfo
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- CN113948338B CN113948338B CN202111007747.6A CN202111007747A CN113948338B CN 113948338 B CN113948338 B CN 113948338B CN 202111007747 A CN202111007747 A CN 202111007747A CN 113948338 B CN113948338 B CN 113948338B
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- Prior art keywords
- magnetic body
- magnetic
- reed switch
- contactor
- switching device
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- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 60
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003466 welding 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
- 239000006185 dispersion Substances 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
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The invention provides an auxiliary switching device of a ceramic direct-current contactor and the contactor, and relates to the technical field of direct-current contactors; the auxiliary switching device specifically includes: the magnetic field loop does not pass through two ends of the magnetic reed switch, so that the auxiliary switching device is disconnected; when the contactor is electrified, the second magnetic body moves axially 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 the background, 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
With the development of new energy automobiles, the battery charging and charging pile technology of pure electric vehicles becomes more important, and in a hardware circuit of a charging component, a direct current contactor is one of important components, and the direct current contactor is widely applied due to low cost and simple process, but has poor temperature resistance and strength and explosion risk, and is applied to the battery charging technology because of good structural strength and good temperature resistance of a ceramic direct current contactor.
The ceramic direct current contactor is applied to a battery device of a charging pile or a pure electric car, and an auxiliary switch is not designed in the ceramic direct current contactor in the prior art, so that when a vehicle or the charging pile is subjected to accidental charging faults, the state of the contactor cannot be monitored in the background, and when the charging faults are encountered, the circuit is complicated to check, and the maintenance efficiency is low.
Disclosure of Invention
The invention provides an auxiliary switching device of a ceramic direct current contactor and a technical scheme of the contactor, and aims to effectively improve or even solve the problem of background monitoring of the contactor and improve the efficiency of maintenance of charging faults.
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 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 which faces 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 is naturally attracted with the step surface;
when the contactor is powered off, the second magnetic body moves axially in a direction away 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 magnetic reed switch, so that the magnetic reed switch is turned off, and the auxiliary switch device is turned off;
when the contactor is electrified, the second magnetic body moves axially 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 the two ends of the magnetic reed switch, and the magnetic reed switch is closed, so that the auxiliary switch device is closed.
Further, the auxiliary switch device further comprises a connecting bracket, and the first magnetic body, the third magnetic body and the magnetic reed switch are respectively embedded and matched with a groove preset by the connecting bracket.
Further, the auxiliary switch device further comprises a shell, wherein a mounting hole is formed in the shell and is in interference fit with the first magnetic body.
Further, the auxiliary switching device is characterized in that the number of the notches is 2, and the notches are symmetrically arranged.
Further, the auxiliary switch device is characterized in that 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 is characterized in that 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 reed is separated so that the reed switch is opened, and the auxiliary switch device is opened;
when the magnetic field loop passes through the reed switch, the reed contact causes the reed switch to close, thereby causing the auxiliary switching device to close.
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 preset in the iron core end and is matched with the accommodating hole.
Further, the auxiliary switching device, wherein the shaft assembly is in welding fit with the core end.
Further, the auxiliary switch device, wherein the connecting bracket is an integrally formed injection molding piece.
A ceramic dc contactor comprising an auxiliary switching device according to any one of the preceding claims.
The auxiliary switching 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 real time in a background;
2) And the maintenance efficiency of the charging faults is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, without limitation to the invention, the description of the invention, if any, and the like
In the figure:
FIG. 1 is a schematic diagram of an auxiliary switching device according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the closing of the auxiliary switching device in a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of the auxiliary switching apparatus in a preferred embodiment of the present invention;
fig. 4 is a schematic diagram showing the structure of the auxiliary switch device according to the preferred embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
In the prior art, the ceramic direct current contactor is not provided with an auxiliary switch, so that when a vehicle or a charging pile is accidentally charged with a fault, the state of the contactor cannot be monitored in the background, and when the charging fault is encountered, the circuit is complicated to check, so that the maintenance efficiency is low.
Therefore, the invention introduces an auxiliary switching device of a ceramic direct current contactor to solve the problems in the prior art.
In this 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, a cavity is arranged in the first magnetic body 5, and a notch is formed in the side face of the first magnetic body 5;
a second magnetic body 4, the second magnetic body 4 being placed in the cavity and reciprocating along the axial direction of the first magnetic body 5;
the magnetic reed switch 1 is arranged at the bottom of the first magnetic body 5 and is used for controlling the working state of the auxiliary switching device;
the third magnetic body 2, there is a step surface on the third magnetic body 2, the step surface faces the bottom of the first magnetic body 5 and connects the reed switch 1;
the permanent magnet 3 is arranged on the step surface and is naturally attracted with the step surface;
when the contactor is powered off, the second magnetic body 4 moves axially along the direction away 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 turned off, and the auxiliary switch device is turned 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, causing the reed switch 1 to close and thus causing the auxiliary switching device to close.
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 powered off, 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 whose magnetic field direction is along the N-stage of the permanent magnet 3, and sequentially passes through the third magnetic body 2, the first magnetic body 5, the second magnetic body 4, the third magnetic body 2, and the S-stage of the permanent magnet 3.
Specifically, in the present embodiment, when the contactor is energized, as shown in fig. 3, the closed magnetic field circuit is blocked by the second magnetic body 4, and is transferred by a part of the magnetic field dispersion at both ends of the permanent magnet 3, and the magnetic field circuit passes through both ends of the reed switch 1.
Specifically, in the present 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 round magnetic steel, and the third magnetic body is a magnetizer.
In the preferred embodiment of the present invention, as shown in fig. 4, a connection bracket 6 is further included, and the first magnetic body 5, the third magnetic body 2 and the reed switch 1 are respectively engaged with a groove preset in the connection bracket 6.
Specifically, in this embodiment, 3 grooves are provided at the bottom of the connection bracket 6, and the connection bracket is assembled after being naturally attracted with the first magnetic body 5, the magnetic reed switch 1, the third magnetic body 2 and the permanent magnet 3.
Specifically, in the present embodiment, the connection bracket 6 has a hollow structure, and the bottom of the first magnetic body 5 is disposed in the hollow of the connection bracket 6.
In the preferred embodiment of the present invention, the present invention further comprises a housing 10, wherein 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 member.
Specifically, in this embodiment, the connecting bracket 6 connects the reed switch 1, the permanent magnet 3 and the third magnetic body 2, then embeds and cooperates with the first magnetic body 5, and then places the first magnetic body 5 in the mounting hole of the housing 10 from the bottom of the housing 10, and performs 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, where 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, and the engagement is a welding engagement.
In the preferred embodiment of the invention, the U-shaped notch is provided, and the number of the notches is 2 and the notches are symmetrically arranged.
In a preferred embodiment of the invention, the bottom of the first magnetic body 5 is provided with a moving opening, the moving opening is a countersink, and the second magnetic body 4 moves reciprocally and axially along the moving opening.
Specifically, in this embodiment, the second magnetic body 4 makes a reciprocating axial movement along the movement opening, and the shaft assembly 9 drives the core end 7 to make a reciprocating axial movement along the movement opening of the first magnetic body 5.
In the preferred embodiment of the invention, two ends of the reed switch 1 are respectively provided with a reed;
when the magnetic field loop does not pass through the reed switch 1, the reed is separated to enable the reed switch 1 to be opened, so that the auxiliary switch device is opened;
when the magnetic field loop passes through the reed switch 1, the reed contact causes the reed switch 1 to close, thereby causing the auxiliary switching device to close.
Specifically, in this embodiment, the reed switch 1 is a single-pole single-throw reed pipe, and when the magnetic field force value generated when the magnetic field loop passes through the two ends of the reed switch 1 reaches the elasticity of the reed, the reed contacts so that the reed switch 1 is closed.
Specifically, in the present embodiment, when the magnetic field loop does not pass through both ends of the reed switch 1 or the magnetic field force value passing through both ends of the reed switch 1 is weakened or vanished, the reed is opened so that the reed switch 1 is opened.
In the preferred embodiment of the present invention, the second magnetic body 4 further includes an iron 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 preset accommodating hole of the iron core end 7 and is matched with the accommodating hole.
Specifically, in this embodiment, the shaft assembly 9 is made of stainless steel, the shaft assembly 9 is in 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 invention, the shaft assembly 9 is in a welded fit with the core end 7.
In the preferred embodiment of the invention, the connecting bracket 6 is an integrally formed injection molded piece.
In a preferred embodiment of the present invention, there is also provided a ceramic dc contactor comprising any of the auxiliary switching devices described above.
Further details of the ceramic dc contactor are disclosed in the auxiliary switch device, and the description of the embodiment is omitted.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (6)
1. An auxiliary switching device of a ceramic direct current contactor, which is applied to the ceramic direct current 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 which faces 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 is naturally attracted with the step surface;
when the contactor is powered off, the second magnetic body moves axially in a direction away 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 magnetic reed switch, so that the magnetic reed switch is turned off, and the auxiliary switch device is turned off;
when the contactor is electrified, the second magnetic body moves axially 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 magnetic reed switch is closed, so that the auxiliary switch device is closed;
the magnetic reed switch is embedded and matched with a groove preset in the connecting bracket respectively;
the magnetic body is provided with a first magnetic body, and the first magnetic body is provided with a first magnetic body;
the number of the U-shaped notches is 2, and the U-shaped notches are symmetrically arranged;
the bottom of the first magnetic body is provided with a moving opening, the moving opening is a countersink, and the second magnetic body moves in a reciprocating axial direction along the moving opening.
2. The auxiliary switching device according to claim 1, wherein two ends of the reed switch are respectively provided with a reed;
when the magnetic field loop does not pass through the reed switch, the reed is separated so that the reed switch is opened, and the auxiliary switch device is opened;
when the magnetic field loop passes through the reed switch, the reed contact causes the reed switch to close, thereby causing the auxiliary switching device to close.
3. The auxiliary switching device according to claim 1, 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 placed in a preset accommodating hole of the iron core end and is matched with the accommodating hole.
4. An auxiliary switching device according to claim 3, wherein the shaft assembly is in welded engagement with the core end.
5. The auxiliary switching device of claim 1, wherein the connecting bracket is an integrally molded injection molded piece.
6. A ceramic dc contactor comprising an auxiliary switching device according to any one of claims 1 to 5.
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 CN113948338A (en) | 2022-01-18 |
| CN113948338B true 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 |
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| 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 |
|---|---|
| CN113948338A (en) | 2022-01-18 |
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