CN210516528U - Auxiliary arc extinguishing device of new energy automobile starting contactor - Google Patents
Auxiliary arc extinguishing device of new energy automobile starting contactor Download PDFInfo
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- CN210516528U CN210516528U CN201921595431.1U CN201921595431U CN210516528U CN 210516528 U CN210516528 U CN 210516528U CN 201921595431 U CN201921595431 U CN 201921595431U CN 210516528 U CN210516528 U CN 210516528U
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Abstract
The utility model discloses an auxiliary arc extinguishing device of a new energy automobile starting contactor, which comprises a heat dissipation shell, wherein a heat dissipation cavity is arranged in the heat dissipation shell, a shell is arranged in the heat dissipation cavity, the shell is fixed on the outer wall of an arc extinguishing ring, the inner part of the arc extinguishing ring is provided with the arc extinguishing cavity, and a first magnetic steel and a second magnetic steel are respectively arranged between the inner side of the shell and the outer wall of the arc extinguishing ring; a plurality of partition strips are arranged on the inner side of the arc extinguishing ring, and an arc extinguishing groove is formed between the two partition strips; a plurality of radiating fins are fixed outside the shell; the shell is also fixedly connected with one end of the heat conduction shell in a heat conduction way, a hollow heat conduction inner cavity and a hollow air guide cavity are arranged in the heat conduction shell, a limiting column is arranged in the heat conduction inner cavity, the limiting column is tightly attached to the end face of one end of the push rod, and the other end of the push rod penetrates through the partition plate and then is communicated with one end of the piston; a stress ring is fixed on the push rod, and a memory spring is sleeved on the push rod and the part of the limiting column between the stress ring and the closed end of the heat conducting inner cavity; the piston is provided with a conduction groove; the heat conduction shell is provided with an air inlet and an air outlet which penetrate through the shell.
Description
Technical Field
The utility model relates to a contactor especially relates to a new energy automobile starts auxiliary arc control device of contactor.
Background
The contactor is an electric appliance which utilizes a coil to flow current to generate a magnetic field in industrial electricity to close a contact so as to control a load. At present, the contactor is one of electric appliances with quite wide application, and the technology of the contactor is relatively mature.
However, when the contact apparatus is in contact with or separated from a moving contact plate (moving contact) through a lead post (stationary contact), an arc is easily generated, and the arc generates a high temperature, so that air in an arc extinguishing chamber is rapidly heated, and the air in water rapidly expands, which easily causes explosion. At present, the heat dissipation design of the contactor is mainly increased aiming at the condition, for example, the arc extinguishing ring is directly exposed, so that the heat dissipation on the arc extinguishing ring is accelerated. However, the design has a large defect, mainly the arc extinguishing ring has high heat and is easy to scald and damage articles contacted with the arc extinguishing ring. And the exposed area of the arc extinguishing ring is small, and the heat dissipation speed is low.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that an auxiliary arc extinguishing device of new energy automobile starting contactor is provided, it has better arc extinguishing, radiating effect to can prevent shell gathering high temperature.
In order to achieve the purpose, the utility model provides an auxiliary arc extinguishing device of a new energy automobile starting contactor, which comprises a heat dissipation shell, wherein the inside of the heat dissipation shell is provided with a heat dissipation cavity, a shell is arranged in the heat dissipation cavity, the shell is fixed on the outer wall of an arc extinguishing ring, the inside of the arc extinguishing ring is provided with the arc extinguishing cavity, and a first magnetic steel and a second magnetic steel are respectively arranged between the inner side of the shell and the outer wall of the arc extinguishing ring; a plurality of partition strips are arranged on the inner side of the arc extinguishing ring, and an arc extinguishing groove is formed between the two partition strips;
a plurality of radiating fins are fixed outside the shell; the shell is also in heat conduction connection and fixation with one end of the heat conduction shell, a hollow heat conduction inner cavity and a hollow air guide cavity are arranged in the heat conduction shell, a partition plate is fixed in the heat conduction inner cavity, the heat conduction inner cavity and the air guide cavity are sealed and divided by the partition plate, a limiting column is arranged in the heat conduction inner cavity, the limiting column is tightly attached to the end face of one end of the push rod, and the other end of the push rod penetrates through the partition plate and then is communicated with one end;
a stress ring is fixed on the push rod, and a memory spring is sleeved on the push rod and the part of the limiting column between the stress ring and the closed end of the heat conducting inner cavity;
the piston is provided with a conduction groove; the heat conduction shell is provided with an air inlet hole and an air exhaust hole which penetrate through the heat conduction shell, the conduction groove of the piston is not contacted with the air inlet hole and the air exhaust hole in the initial state, and the air inlet hole is communicated with the air pipe in an air guide mode.
Preferably, there are two first magnetic steels and two second magnetic steels, and the north pole of one first magnetic steel of the two first magnetic steels is opposite to the south pole of the other first magnetic steel; the north pole of one of the two second magnetic steels is opposite to the south pole of the other second magnetic steel.
Preferably, an electricity inlet column, an electricity outlet column and a movable contact plate are fixed in the arc extinguishing chamber, the electricity inlet column and the electricity outlet column are respectively in conductive connection with a power supply and a power-on device, and the movable contact plate controls the movable contact plate to lift through a coil.
Preferably, the memory spring is thermally expanded at about 100-140 ℃ and is shortened to an initial state below 80 ℃.
Preferably, transformer oil is filled in the heat conduction inner cavity.
Preferably, when the air inlet hole and the air outlet hole are communicated through the conduction groove, the end face of the piston is tightly attached to the inner end face of the air guide cavity.
Preferably, the heat dissipation shell is provided with a through exhaust hole, the exhaust hole communicates the heat dissipation cavity with the outside of the heat dissipation shell, the exhaust hole communicates with the outlet end of the one-way valve, and the air inlet end of the one-way valve communicates with the heat dissipation cavity.
The utility model has the advantages that: the utility model discloses simple structure, and can make the magnetic field of arc extinguishing intracavity portion bigger and even through setting up great first magnet steel, second magnet steel, this can do benefit to the arc extinguishing greatly. And be provided with the arc-extinguishing groove that forms between several partition strip and two partition strips on the arc-extinguishing chamber lateral wall and can divide electric arc into several small arcs of subdividing to be favorable to extinguishing fast of electric arc.
Additionally the utility model discloses still realize the air inlet to the heat dissipation chamber through the heating power switch to heat dissipation intracavity air velocity accelerates, with higher speed to the heat dissipation of shell, thereby reduces the shell heat, prevents the conflagration hidden danger.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, the auxiliary arc extinguishing device of the present embodiment includes a heat dissipating casing 110, a heat dissipating cavity 111 is formed inside the heat dissipating casing 110, a casing 310 is installed inside the heat dissipating cavity 111, the casing 310 is fixed on an outer wall of an arc extinguishing ring 130, an arc extinguishing cavity 133 is formed inside the arc extinguishing ring 130, a first magnetic steel 410 and a second magnetic steel 420 are respectively installed between an inner side of the casing 310 and the outer wall of the arc extinguishing ring 130, two first magnetic steels 410 and two second magnetic steels 420 are respectively provided, and a north pole of one first magnetic steel 410 of the two first magnetic steels 410 is opposite to a south pole of the other first magnetic steel; the north pole of one second magnetic steel 420 of the two second magnetic steels 420 is directly opposite to the south pole of the other second magnetic steel. This design creates a magnetic field in the arc-extinguishing chamber 133 that is disorganized and directed toward the arc-extinguishing ring 130, so that the arc can be elongated and then drawn inside the arc-extinguishing ring 130 when it is generated, thereby extinguishing the arc;
the inner side of the arc extinguishing ring 130 is provided with a plurality of partition strips 131, and an arc extinguishing groove 132 is formed between the two partition strips 131. When the arc is pulled to the partition strip 131, the arc can be partitioned into a plurality of small arcs by the cutting strip to enter the arc extinguishing groove, so that the arc can be extinguished quickly.
An electricity inlet column 521, an electricity outlet column 522 and a movable contact plate 530 are fixed in the arc extinguishing chamber 133, the electricity inlet column 521 and the electricity outlet column 522 are respectively in conductive connection with a power supply and power-on equipment, and the movable contact plate 530 controls the movable contact plate to ascend and descend through a coil, so that the movable contact plate is controlled to be in conductive connection with the electricity inlet column 521 and the electricity outlet column 522, and current between the electricity inlet column 521 and the electricity outlet column 522 is conducted. The coil and the driving movable contact plate 530 of this embodiment may be directly applied to the structure of the related structure in the application of the chinese utility model patent named "an arc extinguishing dc contactor" applied on the same day.
A plurality of heat dissipation fins 321 are fixed outside the housing 310, and when the heat dissipation device is used, the heat of the arc extinguishing ring is guided into the heat dissipation fins 321, and is dissipated through the heat dissipation fins 321.
The shell 110 is further fixedly connected with one end of the heat conducting shell 120 in a heat conducting manner, a hollow heat conducting inner cavity 121 and a hollow air conducting cavity 124 are arranged in the heat conducting shell 120, a partition plate 210 is fixed in the heat conducting inner cavity 121, the heat conducting inner cavity 121 and the hollow air conducting cavity 124 are hermetically divided by the partition plate 210, a limiting column 232 is installed in the heat conducting inner cavity 121, the limiting column 232 is attached to one end face of one end of a push rod 231, and the other end of the push rod 231 penetrates through the partition plate 210 and then is communicated with one end of;
the push rod 231 is fixed with a stress ring 2311, the parts of the push rod 231 and the limiting column 232 between the stress ring 2311 and the closed end of the heat conducting cavity 121 are sleeved with a memory spring 220, the memory spring 220 is heated to extend at about 100-140 ℃, and is shortened to an initial state below 80 ℃.
The transformer oil 240 is filled in the heat conducting inner cavity 121, and a conducting groove 251 is formed in the piston 250; the heat conducting shell 120 is provided with an air inlet hole 122 and an air outlet hole 123 which penetrate through the heat conducting shell, and the conducting groove 251 of the piston 250 is not contacted with the air inlet hole 122 and the air outlet hole 123 in the initial state, so that the piston seals the communicating grooves of the air inlet hole 122, the air outlet hole 123 and the air conducting cavity 124, and at the moment, air flow cannot pass through the air conducting cavity 124 and then enters the heat radiating cavity 111. The air inlet holes 122 are communicated with an automobile air inlet grid or an air conditioner air pipe through an air inlet pipe 260.
When the heat dissipation device is used, heat generated by electric arc is transmitted to the heat dissipation fins of the heat dissipation fins through the arc extinguishing rings to dissipate the heat into the heat dissipation cavity, meanwhile, the heat on the shell heats transformer oil, so that the memory spring 220 is heated, the memory spring extends until the memory spring reaches the extension temperature, so that the piston 250 is driven to move upwards until the conduction groove 251 communicates the air inlet hole 122 with the air exhaust hole 123, and at the moment, air flow can enter the heat dissipation cavity to blow the heat dissipation fins, so that the heat dissipation is accelerated, and finally, the air flow is discharged from the. The piston adopts memory spring driven mode, can guarantee the timely heat dissipation in heat dissipation chamber on the one hand, and on the other hand can prevent that heat dissipation chamber from long-time and intake pipe intercommunication, causes the outside foreign matter to get into heat dissipation chamber in a large number, causes its inside to be polluted. In practical tests, the air inlet pipe is generally conducted with the air flow of the heat dissipation cavity only when a large electric arc occurs and the weather is hot. And in time with the heat dissipation of arc extinguishing ring, can be with its arc extinguishing intracavity temperature, that is to say reduce electron activity degree to reduce the electric arc and produce probability and the intensity of electric arc.
Preferably, when the conduction groove 251 connects the air inlet hole 122 and the air outlet hole 123, the end surface of the piston 250 is attached to the inner end surface of the air guide chamber. This design can prevent the piston from moving excessively, which results in the conduction groove 251 unable to connect the air inlet hole 122 and the air outlet hole 123.
Preferably, the exhaust hole 122 is communicated with an outlet end of the one-way valve 510, and an air inlet end of the one-way valve 510 is communicated with the heat dissipation cavity 111, so that the air flow in the heat dissipation cavity can flow out in one direction. The design can prevent foreign matters on the outer wall from reversely entering the heat dissipation cavity.
The details of the present invention are well known to those skilled in the art.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. The utility model provides a new energy automobile starts supplementary arc control device of contactor, characterized by: the arc extinguishing device comprises a heat dissipation shell, wherein a heat dissipation cavity is formed in the heat dissipation shell, a shell is arranged in the heat dissipation cavity, the shell is fixed on the outer wall of an arc extinguishing ring, the arc extinguishing cavity is formed in the arc extinguishing ring, and a first magnetic steel and a second magnetic steel are respectively arranged between the inner side of the shell and the outer wall of the arc extinguishing ring; a plurality of partition strips are arranged on the inner side of the arc extinguishing ring, and an arc extinguishing groove is formed between the two partition strips;
a plurality of radiating fins are fixed outside the shell; the shell is also in heat conduction connection and fixation with one end of the heat conduction shell, a hollow heat conduction inner cavity and a hollow air guide cavity are arranged in the heat conduction shell, a partition plate is fixed in the heat conduction inner cavity, the heat conduction inner cavity and the air guide cavity are sealed and divided by the partition plate, a limiting column is arranged in the heat conduction inner cavity, the limiting column is tightly attached to the end face of one end of the push rod, and the other end of the push rod penetrates through the partition plate and then is communicated with one end;
a stress ring is fixed on the push rod, and a memory spring is sleeved on the push rod and the part of the limiting column between the stress ring and the closed end of the heat conducting inner cavity;
the piston is provided with a conduction groove; the heat conduction shell is provided with an air inlet hole and an air exhaust hole which penetrate through the heat conduction shell, the conduction groove of the piston is not contacted with the air inlet hole and the air exhaust hole in the initial state, and the air inlet hole is communicated with the air pipe in an air guide mode.
2. An auxiliary arc extinguishing device according to claim 1, characterized in that: the first magnetic steel and the second magnetic steel are respectively provided with two pieces, and the north pole of one piece of first magnetic steel in the two pieces of first magnetic steel is opposite to the south pole of the other piece of first magnetic steel; the north pole of one of the two second magnetic steels is opposite to the south pole of the other second magnetic steel.
3. An auxiliary arc extinguishing device according to claim 1, characterized in that: and an electricity inlet column, an electricity outlet column and a movable touch panel are fixed in the arc extinguishing cavity, the electricity inlet column and the electricity outlet column are respectively in conductive connection with a power supply and a power-on device, and the movable touch panel controls the movable touch panel to lift through a coil.
4. An auxiliary arc extinguishing device according to claim 1, characterized in that: the memory spring is heated to extend at about 100-140 ℃ and is shortened to the initial state below 80 ℃.
5. An auxiliary arc extinguishing device according to claim 1, characterized in that: and transformer oil is filled in the heat conduction inner cavity.
6. An auxiliary arc extinguishing device according to claim 1, characterized in that: when the air inlet hole and the air outlet hole are communicated through the conduction groove, the end face of the piston is tightly attached to the inner end face of the air guide cavity.
7. An auxiliary arc extinguishing device according to claim 1, characterized in that: the heat dissipation shell is provided with a through exhaust hole, the exhaust hole communicates the heat dissipation cavity with the outside of the heat dissipation shell, the exhaust hole is communicated with the outlet end of the one-way valve, and the air inlet end of the one-way valve is communicated with the heat dissipation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921595431.1U CN210516528U (en) | 2019-09-24 | 2019-09-24 | Auxiliary arc extinguishing device of new energy automobile starting contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921595431.1U CN210516528U (en) | 2019-09-24 | 2019-09-24 | Auxiliary arc extinguishing device of new energy automobile starting contactor |
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| Publication Number | Publication Date |
|---|---|
| CN210516528U true CN210516528U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921595431.1U Active CN210516528U (en) | 2019-09-24 | 2019-09-24 | Auxiliary arc extinguishing device of new energy automobile starting contactor |
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| CN (1) | CN210516528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111863535A (en) * | 2020-08-03 | 2020-10-30 | 中汇瑞德电子（芜湖）有限公司 | Heat dissipation type relay with breathing function |
| CN118448912A (en) * | 2024-05-21 | 2024-08-06 | 乐清市精密电子电器有限公司 | High-temperature-resistant connector |
-
2019
- 2019-09-24 CN CN201921595431.1U patent/CN210516528U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111863535A (en) * | 2020-08-03 | 2020-10-30 | 中汇瑞德电子（芜湖）有限公司 | Heat dissipation type relay with breathing function |
| CN111863535B (en) * | 2020-08-03 | 2023-02-24 | 中汇瑞德电子（芜湖）有限公司 | Heat dissipation type relay with breathing function |
| CN118448912A (en) * | 2024-05-21 | 2024-08-06 | 乐清市精密电子电器有限公司 | High-temperature-resistant connector |
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