CN218676952U

CN218676952U - New forms of energy high voltage direct current contactor

Info

Publication number: CN218676952U
Application number: CN202222912879.XU
Authority: CN
Inventors: 李方功; 李�杰; 胡凤生
Original assignee: Shenzhen Basiba Automobile Electronics Co ltd
Current assignee: Shenzhen Basiba Automobile Electronics Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-03-21
Anticipated expiration: 2032-11-02

Abstract

The utility model discloses a new forms of energy high voltage direct current contactor, including the iron flask, the interior bottom of iron flask is provided with coil pack, and coil pack's middle part is provided with push rod assembly, and push rod assembly's top is provided with the ceramic subassembly with iron flask top matched with. The utility model discloses a structural innovation uses through each part cooperation of action mechanism, can effectively improve the creepage distance of electric current at contactor during operation, carries the withstand voltage performance between high, the low-voltage system, effectively prevents that the low-voltage control circuit is worn in the direct impact of high voltage, has improved the reliability of product, has guaranteed the safe handling of equipment.

Description

New forms of energy high voltage direct current contactor

Technical Field

The utility model relates to a technical field that new forms of energy electric automobile, power communication, engineering machine tool, energy storage system and various electric power units's heavy current power load used particularly, relates to a new forms of energy high voltage direct current contactor.

Background

The conventional structure of the direct current contactor on the current market is as follows: the electromagnetic contactor comprises a shell, two static contacts, a movable contact piece and a driving mechanism, wherein an insulating shell is fixedly sleeved outside the shell, a diaphragm plate is positioned and installed in an inner cavity of the shell, the diaphragm plate divides the inner cavity of the shell into an upper cavity chamber and a lower cavity chamber, and a static iron core is also positioned and installed on the diaphragm plate; the two static contacts are arranged in the upper cavity side by side, the movable contact piece is also arranged in the upper cavity, and the movable contact piece and the two static contacts are respectively arranged along the vertical direction; the driving mechanism is provided with a coil, a movable iron core, a push rod and a reset spring, the coil is positioned and arranged in the lower cavity, the movable iron core is movably arranged in a space defined by the coil, the push rod is vertically arranged, the lower end of the push rod is tightly matched and penetrates through the movable iron core, the upper portion of the push rod penetrates through the static iron core in a movable mode and is connected with the movable contact piece, and the reset spring is sleeved outside the lower portion of the push rod. When the coil is electrified, a magnetic field E1 is generated, and a magnetic potential difference M1 is generated at the magnetic gap, namely the electromagnetic attraction force, so that the movable iron core moves upwards, and then the movable contact piece is driven to move upwards, and the movable contact piece is respectively in attraction communication with the two static contacts.

However, when the existing dc contactor produced at home and abroad works, the low-voltage control system and the high-voltage output system have a short circuit, an open circuit and even damage to the low-voltage current due to small creepage distance and poor insulation property, and the high-voltage capacitor is easy to break through the low-voltage control system, so that a product fault is caused.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

To the problem among the correlation technique, the utility model provides a new forms of energy high voltage direct current contactor to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

the utility model provides a new forms of energy high voltage direct current contactor, includes the iron ladle, and the inner bottom end of iron ladle is provided with coil pack, and coil pack's middle part is provided with push rod assembly, and push rod assembly's top is provided with the ceramic subassembly with iron ladle top matched with, and ceramic subassembly's bottom cooperatees with coil pack's top one side.

Further, in order to assemble the coil terminal in the upper end of spool, the enameled wire is wound on the framework of the spool, the head end and the tail end of the enameled wire are hung on the coil terminal and fixed by a soldering tin mode, the metal shell is filled into the bottom of the spool, the stability in the use process is guaranteed, the coil assembly comprises the metal shell arranged at the bottom end in the iron can, the spool is arranged outside the metal shell, the coil terminal matched with the ceramic assembly is arranged at the top of the spool, and the enameled wire is sleeved outside the spool.

Furthermore, in order to effectively increase the creepage distance of current and improve the insulation and pressure resistance between high-voltage and low-voltage loops, the push rod assembly comprises an iron core arranged in the metal shell, a push rod is arranged in the middle of the iron core, the top of the push rod is matched with the ceramic assembly, an iron sheet is arranged in the middle of the push rod, a gap matched with the coil terminal is formed in the bottom of the iron sheet, a lower insulating ring is arranged at the top end of the iron sheet, a movable contact piece is arranged at the top end of the lower insulating ring, and a clamp spring matched with the top of the push rod is arranged in the movable contact piece; a compression spring is sleeved outside the movable contact piece; an upper insulating ring is arranged in the middle of the top end of the movable contact piece and is positioned at the top of the lower insulating ring.

Further, in order to ensure the stability of the push rod assembly in the installation process, a reaction spring matched with the push rod is arranged on the inner side of the top of the iron core.

Further, in order to weld the ceramic assembly together through the mode of vacuum or tunnel furnace brazing, the efficiency in the use process is improved, the ceramic assembly comprises a static contact point arranged on the top end of the push rod, a ceramic shell is sleeved on the outer side of the static contact point, and a connecting ring matched with the iron tank is arranged on the outer side of the bottom end of the ceramic shell.

The beneficial effects of the utility model are that:

1. the utility model discloses a structural innovation uses through each part cooperation of action mechanism, can effectively improve the creepage distance of electric current at contactor during operation, carries the withstand voltage performance between high, the low-voltage system, effectively prevents that the low-voltage control circuit is worn in the direct impact of high voltage, has improved the reliability of product, has guaranteed the safe handling of equipment.

2. The utility model discloses an insulation system has been used, the upper and lower insulating ring has been increased in action mechanism, when low pressure control system gave the electricity, the insulating ring can effectively increase the creepage distance between movable contact piece and the push rod, thereby the insulating and pressure-resistant performance between high, the low pressure system has been promoted, the reliability of product is improved, this insulating ring adopts high temperature resistant insulating material simultaneously, the material group of improvement material is other, the insulating and pressure-resistant performance of increase material, in addition through special degassing process, and fill into high-purity hydrogen at the sealed contact chamber, reduce the inside pollution level of product.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a new energy high voltage direct current contactor according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a coil assembly in a new energy high voltage dc contactor according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a coil assembly in a new energy high voltage dc contactor according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a push rod assembly in a new energy high voltage dc contactor according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a push rod assembly in a new energy high voltage direct current contactor according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a ceramic component of a new energy high voltage dc contactor according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a ceramic component in a new energy high voltage dc contactor according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a new energy high voltage direct current contactor according to the embodiment of the present invention in a specific application process.

In the figure:

1. a tin; 2. a coil assembly; 21. a metal shell; 22. a bobbin; 23. a coil terminal; 24. enamelled wires; 3. a push rod assembly; 31. an iron core; 32. a push rod; 33. iron sheets; 34. a notch; 35. a lower insulating ring; 36. a movable contact piece; 37. a clamp spring; 38. a compression spring; 39. an upper insulating ring; 310. a counter-force spring; 4. a ceramic component; 41. a stationary contact point; 42. a ceramic housing; 43. and (7) connecting rings.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a new forms of energy high voltage direct current contactor.

Now combine the attached drawing and detailed description to explain the utility model further, as shown in fig. 1-8, according to the utility model discloses new forms of energy high voltage direct current contactor of embodiment, including iron can 1, the interior bottom of iron can 1 is provided with coil pack 2, and coil pack 2's middle part is provided with push rod assembly 3, and push rod assembly 3's top is provided with ceramic assembly 4 with 1 top matched with in iron can, and ceramic assembly 4's bottom cooperatees with coil assembly 2's top one side.

With the aid of the above technical scheme, the utility model discloses a structural innovation uses through each part cooperation of actuating mechanism, can effectively improve the creepage distance of electric current at the contactor during operation, carries the insulating and pressure-resistant performance between high, the low-voltage system, prevents effectively that the low-voltage control circuit is worn in the direct impact of high voltage, has improved the reliability of product, has guaranteed the safe handling of equipment.

In one embodiment, for the coil assembly 2, the coil assembly 2 includes a metal shell 21 disposed at the bottom end in the iron can 1, a bobbin 22 is disposed outside the metal shell 21, a coil terminal 23 matched with the ceramic assembly 4 is disposed on the top of the bobbin 22, an enamel wire 24 is sleeved outside the bobbin 22, so as to assemble the coil terminal at the upper end of the bobbin, the enamel wire 24 is wound on the bobbin, the head end and the tail end of the enamel wire are hung on the coil terminal and fixed by soldering tin, and the metal shell is installed at the bottom of the bobbin, thereby ensuring stability in use.

In an embodiment, for the above push rod assembly 3, the push rod assembly 3 includes an iron core 31 disposed inside the metal shell 21, a push rod 32 is disposed in the middle of the iron core 31, the top of the push rod 32 is matched with the ceramic assembly 4, an iron sheet 33 is disposed in the middle of the push rod 32, a gap 34 matched with the coil terminal 23 is formed in the bottom of the iron sheet 33, a lower insulating ring 35 is disposed at the top end of the iron sheet 33, a movable contact piece 36 is disposed at the top end of the lower insulating ring 35, and a snap spring 37 matched with the top of the push rod 32 is disposed inside the movable contact piece 36; a compression spring 38 is sleeved outside the movable contact piece 36; the middle position of the top end of the movable contact piece 36 is provided with an upper insulating ring 39, the upper insulating ring 39 is positioned at the top of the lower insulating ring 35, and the inner side of the top of the iron core 31 is provided with a reaction spring 310 matched with the push rod 32, so that the creepage distance of current is effectively increased, and the insulation and voltage resistance performance between a high-voltage loop and a low-voltage loop is improved.

In one embodiment, for the ceramic component 4, the ceramic component 4 includes a stationary contact 41 disposed at the top end of the push rod 32, a ceramic shell 42 is sleeved outside the stationary contact 41, and a connecting ring 43 matched with the iron can 1 is disposed outside the bottom end of the ceramic shell 42, so that the ceramic component is welded together by vacuum or tunnel furnace brazing, thereby improving the efficiency in use.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In the time of practical application, place push rod assembly 3 on coil pack 2, place ceramic assembly 4 on the push rod assembly 3, the outside covers with iron ladle 1 to adopt the laser welding mode with ceramic assembly and iron ladle welding together, form electromagnet assembly, adopt special degasification, fill hydrogen and seal technology and seal, make inside IP67 that satisfies of whole contact cavity, improve the operational environment grade of sound contact.

The functional principle of the push rod assembly 3 is as follows: when the iron core is used, the push rod can still continue to move upwards after the movable contact piece is contacted with the static contact point until the iron core is contacted with the iron sheet, the movable contact piece is farthest away from the top of the push rod, the creepage distance of current can be effectively increased in the process, and the insulation and voltage resistance performance between the high-voltage loop and the low-voltage loop is improved.

The functional principle of the coil assembly 2 is as follows: the coil terminal is assembled at the upper end of the bobbin, the enameled wire 24 is wound on the framework of the bobbin, the head end and the tail end of the enameled wire are hung on the coil terminal and fixed in a soldering tin mode, and the metal shell is installed at the bottom of the bobbin, so that the coil assembly is formed.

To sum up, with the help of the above technical scheme of the utility model, the utility model discloses a structural innovation uses through each part cooperation of actuating mechanism, can effectively improve the creepage distance of electric current at the contactor during operation, carries the dielectric strength resistance between rise, the low-voltage system, effectively prevents that the low-voltage control circuit is worn in the direct impact of high voltage, has improved the reliability of product, has guaranteed the safe handling of equipment. The utility model discloses an insulation system has been used, has increased upper and lower insulating ring in actuating mechanism, and when low voltage control system gave the electricity, the insulating ring can effectively increase the creepage distance between contact piece and the push rod to having promoted the withstand voltage performance between high, the low pressure system, having improved the reliability of product, this insulating ring adopts high temperature resistant insulating material simultaneously, and the material group of improvement material is other, increases the withstand voltage performance of material. In addition, the pollution level in the product is reduced by a special degassing process and filling high-purity hydrogen into the sealed contact chamber.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a new forms of energy high voltage direct current contactor, includes iron ladle (1), its characterized in that, the inner bottom end of iron ladle (1) is provided with coil pack (2), the middle part of coil pack (2) is provided with push rod subassembly (3), the top of push rod subassembly (3) be provided with iron ladle (1) top matched with ceramic subassembly (4), just the bottom of ceramic subassembly (4) with top one side of coil pack (2) cooperatees.

2. The new energy high voltage direct current contactor according to claim 1, characterized in that the coil assembly (2) comprises a metal shell (21) arranged at the bottom end in the iron tank (1), a bobbin (22) is arranged outside the metal shell (21), and a coil terminal (23) matched with the ceramic assembly (4) is arranged at the top of the bobbin (22).

3. The new energy source high voltage direct current contactor according to claim 2, characterized in that the outside of the bobbin (22) is sheathed with enameled wire (24).

4. The new energy high-voltage direct current contactor according to claim 3, wherein the push rod assembly (3) comprises an iron core (31) arranged inside the metal shell (21), a push rod (32) is arranged in the middle of the iron core (31), the top of the push rod (32) is matched with the ceramic assembly (4), an iron sheet (33) is arranged in the middle of the push rod (32), a gap (34) matched with the coil terminal (23) is formed in the bottom of the iron sheet (33), a lower insulating ring (35) is arranged at the top end of the iron sheet (33), a movable contact piece (36) is arranged at the top end of the lower insulating ring (35), and a clamp spring (37) matched with the top of the push rod (32) is arranged inside the movable contact piece (36);

a compression spring (38) is sleeved outside the movable contact piece (36);

an upper insulating ring (39) is arranged in the middle of the top end of the movable contact piece (36), and the upper insulating ring (39) is located at the top of the lower insulating ring (35).

5. The new energy source high voltage direct current contactor according to claim 4, characterized in that a reaction spring (310) matched with the push rod (32) is arranged on the inner side of the top of the iron core (31).

6. The new energy high-voltage direct current contactor according to claim 5, characterized in that the ceramic component (4) comprises a static contact point (41) arranged at the top end of the push rod (32), a ceramic shell (42) is sleeved outside the static contact point (41), and a connecting ring (43) matched with the iron tank (1) is arranged outside the bottom end of the ceramic shell (42).