CN219497638U - High-efficiency power pipe device switch - Google Patents
High-efficiency power pipe device switch Download PDFInfo
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- CN219497638U CN219497638U CN202320658041.4U CN202320658041U CN219497638U CN 219497638 U CN219497638 U CN 219497638U CN 202320658041 U CN202320658041 U CN 202320658041U CN 219497638 U CN219497638 U CN 219497638U
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Abstract
The utility model relates to the technical field of contactor switches, in particular to a high-efficiency power pipe device switch, which comprises a shell, a ceramic cavity fixedly arranged in the shell and a direct current contactor cavity fixedly arranged in the ceramic cavity, wherein the ceramic cavity is a hollow cavity; an ignition tube is fixedly arranged in the cavity of the direct current contactor, and a piston plugged in the cavity of the direct current contactor is arranged on the lower side of the ignition tube; the piston comprises a piston body, the upper end of the piston body is provided with a hemispherical groove, and the lower end of the piston body is provided with a conical part. The piston top is equipped with the recess, and the piston bottom is the toper, and the position of ignition tube gas release just is to the recess, has greatly increased the area that gas acted in the piston, has strengthened the thrust of piston greatly, and the piston can be pushed away peripheral gas in the moment of being pushed by gas, reduces the resistance that peripheral gas brought in the motion process, breaks off thoroughly whole switch, has guaranteed the safety in the electrical circuit.
Description
Technical Field
The utility model relates to the technical field of contactor switches, in particular to a high-efficiency power pipe device switch.
Background
In the new energy industry, such as energy storage, charging piles, automobiles and the like, a high-voltage direct-current contactor is required to be used as a circuit switch, so that the correct input and output of the battery energy are ensured. In electrical circuits, high voltage dc contactors, hot melt fuses and pyrotechnic fuses are typically provided. The integrated contactor integrates the functions of a high-voltage direct-current contactor, a hot-melt fuse and a pyrotechnic device fuse into one device, so that a novel contactor with an intelligent control function is formed.
The principle of the integrated contactor is that the integrated contactor has the same function as a high-voltage direct current contactor in the normal use process of a battery, when a battery pack is short-circuited, collision (such as new energy automobile collision) and the like, a main loop in the high-voltage direct current contactor is broken by starting a pyrotechnic device in an integrated product through signals such as current, position and the like, so that the mechanical open circuit in the whole loop of the battery is realized, and the safety of the battery is ensured.
The pyrotechnic device switch is powered on through a coil, converts electric energy into mechanical energy, controls the opening and closing functions of the switch through the movement of a push rod mechanism, specifically triggers an ignition tube to generate explosive gas to generate energy, and acts on the contact part of the direct current contactor in a transmission mode to forcedly separate the contact under the electrified condition, so that the reliable disconnection of the contactor is ensured.
In the prior art, when the pyrotechnic device is triggered, the energy obtained by the piston is lower, and the columnar piston also has larger resistance and lower sensitivity when being pushed.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a high-efficiency power pipe device switch.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a high-efficiency power pipe device switch comprises a shell, a ceramic cavity fixedly arranged in the shell and a direct current contactor cavity fixedly arranged in the ceramic cavity; an ignition tube is fixedly arranged in the direct current contactor cavity, an ignition device signal wire extending to the outside of the direct current contactor cavity is arranged at the upper end of the ignition tube, and a piston plugged in the direct current contactor cavity is arranged at the lower side of the ignition tube; the piston comprises a piston body, a hemispherical groove is formed in the upper end of the piston body, and a conical portion is arranged at the lower end of the piston body.
Preferably, the upper edge of the groove is provided with a chamfer, and the groove smoothly transits to the upper surface of the piston body.
Preferably, the taper of the conical portion is between 0.3 and 0.6.
Preferably, the taper of the conical portion is 0.47.
Preferably, a sealing ring groove is formed in the outer side of the piston body, a sealing ring is arranged in the sealing ring groove, and the outer edge of the sealing ring abuts against the inner wall of the cavity of the direct current contactor.
The beneficial effects of the utility model are as follows:
1. the top of the piston is provided with a groove, and the gas release position of the ignition tube is opposite to the groove, so that the gas generated by the ignition tube can be conveniently and instantaneously acted on the piston, the acting area of the gas in the piston is greatly increased, and the thrust of the piston is greatly enhanced.
2. The bottom of the piston is conical, the piston can push away peripheral gas at the moment of being pushed by the gas, the resistance caused by the peripheral gas in the movement process is reduced, the kinetic energy of the piston completely converts impact force in the process of touching airtight resistance in the ignition tube triggering process, and then the piston is enabled to punch out the functional sheet, the whole switch is thoroughly disconnected, and the safety in an electric loop is ensured.
Drawings
FIG. 1 is a schematic three-dimensional structure of a high-efficiency power pipe device switch according to the present utility model;
FIG. 2 is a schematic view of a closed state cross-sectional structure of a high efficiency power tube device switch according to the present utility model;
FIG. 3 is a schematic diagram of a cross-sectional structure of a DC contactor of a high-efficiency power pipe device switch according to the present utility model;
FIG. 4 is a schematic diagram of a cross-sectional structure of a piston of a high-efficiency power tube device switch according to the present utility model;
fig. 5 is a schematic structural diagram of a high-efficiency power switch for a pipe device according to the present utility model.
In the figure: 1-an upper housing; 2-a lower housing; 3-ceramic cavities; 4-static terminals; 5-direct current contactor cavity; 51-external threads; 6-ignition tube; 61-an ignition signal line; 7-a piston; 71-a piston body; 72-groove; 73-conical section; 74-a seal ring groove; 75-sealing rings; 8-sealing sheets; 9-pushing the rod; 10-moving sheets; 11-loading a spring; 12-lower springs; 13-functional sheet; 14-sealing the metal shell; 15-coil rack; 16-enamelled wire; 17-a switching signal tap; 18-a push rod collar; 19-iron core; 20-drive mechanism.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments.
Referring to fig. 1-5, a high efficiency power tube apparatus switch includes a housing, a ceramic cavity 3 and a coil former 15 fixedly mounted inside the housing, a dc contactor cavity 5 fixedly mounted inside the ceramic cavity 3.
The shell includes upper housing 1 and lower shell 2, and ceramic cavity 3 installs inside upper housing 1, and coil former 15 installs inside lower shell 2, and one side of lower shell 2 is provided with switch signal extraction joint 17.
Two static terminal holes and a direct current contactor hole positioned between the two static terminal holes are formed in the top of the ceramic cavity 3, one static terminal 4 is welded in each of the two static terminal holes, the upper end of the static terminal 4 protrudes out of the shell, an annular sealing sheet 8 is welded in each direct current contactor hole, and the direct current contactor cavity 5 is arranged on the inner side of the sealing sheet 8.
The ignition tube 6 is fixedly installed in the direct-current contactor cavity 5, an ignition device signal wire 61 extending to the outside of the direct-current contactor cavity 5 is arranged at the upper end of the ignition tube 6, and a piston 7 plugged in the direct-current contactor cavity 5 is arranged at the lower side of the ignition tube 6.
The piston 7 includes the piston body 71, and the upper end of piston body 71 is equipped with hemispherical recess 72, and the upper edge of recess 72 is equipped with the chamfer for recess 72 is to the upper surface smooth transition of piston body 71, and the lower extreme of piston body 71 is provided with cone 73, and the tapering of cone 73 is 0.47. A sealing ring groove 74 is formed in the outer side of the piston body 71, a sealing ring 75 is arranged in the sealing ring groove 74, and the outer edge of the sealing ring 75 abuts against the inner wall of the direct current contactor cavity 5.
The outside of coil former 15 is provided with enameled wire 16, and the outside of enameled wire 16 is provided with actuating mechanism 20, and the inboard fixedly connected with of coil former 15 seals metal casing 14, and the inside of sealing metal casing 14 is along its length direction sliding fit has iron core 19, fixedly connected with push rod 9 that the top extends to the piston 7 side on the iron core 19, the top fixedly connected with of push rod 9 and the moving plate 10 that matches of quiet terminal 4.
The bottom fixedly connected with function piece 13 of pottery cavity 3, the middle part fixedly connected with push rod lantern ring 18 of function piece 13, push rod 9 along length direction sliding fit in push rod lantern ring 18 inside. The upper spring 11 is sleeved outside the upper end of the push rod 9, the upper spring 11 is positioned between the moving plate 10 and the push rod lantern ring 18, the upper end of the push rod is fixed or propped against the moving plate 10, and the lower end of the push rod is fixed or propped against the push rod lantern ring 18.
The lower spring 12 is sleeved outside the lower end of the push rod 9, the lower spring 12 is positioned between the functional sheet 13 and the iron core 19, and the upper end of the lower spring is fixed on the functional sheet 13.
When the coil is electrified, the coil generates an electromagnetic field, and the electromagnetic field is absorbed and magnetized by the iron core 19, and the iron core 19 moves upwards, so that the static terminal 4 and the moving plate 10 are closed. If the coil is powered down, the iron core 19 is reset under the action of the spring, so that the switch is controlled to be opened and closed.
When encountering abnormal working conditions, the ignition tube 6 is triggered to start the pyrotechnic device, a large amount of gas is generated after the ignition tube 6 is triggered, and the gas release position of the ignition tube 6 is opposite to the groove 72, so that the gas generated by the ignition tube 6 can be conveniently and instantaneously acted on the piston 7, the acting area of the gas in the piston 7 is greatly increased, and the thrust of the piston 7 is greatly enhanced. The bottom of piston 7 is provided with circular cone 73, and piston 7 can push away peripheral gas in the moment of being promoted by gas, reduces the resistance that peripheral gas brought in the motion process, and the kinetic energy of piston 7 in the ignition tube 6 triggering process all converts the impact force in the in-process of touching airtight resistance, and then makes piston 7 dash out function piece 13, and explosive gas promotes piston 7 to promote push rod 9, breaks the structure of ending on the function piece 13, breaks whole switch thoroughly, has guaranteed the safety in the electrical circuit.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The high-efficiency power pipe device switch is characterized by comprising a shell, a ceramic cavity (3) fixedly arranged in the shell, and a direct current contactor cavity (5) fixedly arranged in the ceramic cavity (3);
an ignition tube (6) is fixedly arranged in the direct current contactor cavity (5), an ignition device signal wire (61) extending to the outside of the direct current contactor cavity (5) is arranged at the upper end of the ignition tube (6), and a piston (7) plugged in the direct current contactor cavity (5) is arranged at the lower side of the ignition tube (6);
the piston (7) comprises a piston body (71), a hemispherical groove (72) is formed in the upper end of the piston body (71), and a conical portion (73) is arranged at the lower end of the piston body (71).
2. A high efficiency power pipe device switch according to claim 1, wherein the upper edge of the groove (72) is provided with a chamfer, and the groove (72) smoothly transitions to the upper surface of the piston body (71).
3. A high efficiency power pipe device switch as defined in claim 1 wherein said conical portion (73) has a taper of between 0.3 and 0.6.
4. A high efficiency power pipe device switch according to claim 3, wherein the taper of the conical section (73) is 0.47.
5. The high-efficiency power pipe device switch according to claim 1, wherein a sealing ring groove (74) is formed in the outer side of the piston body (71), a sealing ring (75) is arranged in the sealing ring groove (74), and the outer edge of the sealing ring (75) abuts against the inner wall of the cavity (5) of the direct current contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320658041.4U CN219497638U (en) | 2023-03-29 | 2023-03-29 | High-efficiency power pipe device switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320658041.4U CN219497638U (en) | 2023-03-29 | 2023-03-29 | High-efficiency power pipe device switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219497638U true CN219497638U (en) | 2023-08-08 |
Family
ID=87506288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320658041.4U Active CN219497638U (en) | 2023-03-29 | 2023-03-29 | High-efficiency power pipe device switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219497638U (en) |
-
2023
- 2023-03-29 CN CN202320658041.4U patent/CN219497638U/en active Active
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