CN217306230U

CN217306230U - Discharge resistor for vehicle

Info

Publication number: CN217306230U
Application number: CN202220698818.5U
Authority: CN
Inventors: 魏庄子; 仉增维; 刘新平; 易声宝; 滕文卿; 赵夏尧
Original assignee: Guangdong Yijie Technology Co ltd
Current assignee: Guangdong Yijie Technology Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-26
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses an automobile-used discharge resistor, include: the shell is internally provided with an inner cavity; the resistor main body is arranged in the inner cavity and comprises a plurality of resistor cores which are electrically connected with each other, and the resistor cores are wound mica plates or thick film type resistor ceramic substrates; and the wiring end is arranged on the shell, one end of the wiring end is electrically connected with the resistor main body, and the other end of the wiring end extends to the outside. According to automobile-used discharge resistor, the resistance main part includes a plurality of resistance core that electricity is connected each other, and the resistance core is wire winding mica board or thick membrane type resistance ceramic substrate, and wire winding mica board and thick membrane type resistance ceramic substrate are littleer for traditional ceramic rod winding volume, correspond, have reduced the automobile-used discharge resistor's of embodiment volume.

Description

Discharge resistor for vehicle

Technical Field

The utility model relates to a resistor technical field, in particular to automobile-used discharge resistor.

Background

At present, under the gradual development of electric automobiles, the requirement on the load performance of winding resistors in the electric automobiles is increasingly increased. In the related art, a vehicle ultra-high power resistor is provided, in which a plurality of ceramic rod windings are connected in series to increase the load of the resistor, but the vehicle ultra-high power resistor increases the load and correspondingly increases the volume of the vehicle ultra-high power resistor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least, the utility model provides an automobile-used discharge resistor, under the condition of the load that possess the automobile-used super high power resistor of tradition, the volume is littleer.

According to the utility model provides an automobile-used discharge resistor, include:

the shell is internally provided with an inner cavity;

the resistor main body is arranged in the inner cavity and comprises a plurality of resistor cores which are electrically connected with each other, and the resistor cores are wound mica plates or thick film type resistor ceramic substrates;

and the wiring end is arranged on the shell, one end of the wiring end is electrically connected with the resistor main body, and the other end of the wiring end extends to the outside.

Automobile-used discharge resistor have following beneficial effect at least: the utility model discloses among the automobile-used discharge resistor, the resistance main part includes a plurality of resistance core that each other electricity is connected, and the resistance core is wire winding mica board or thick membrane type resistance ceramic substrate, and wire winding mica board and thick membrane type resistance ceramic substrate are littleer for traditional ceramic rod winding volume, correspond, have reduced the utility model discloses the automobile-used discharge resistor's of embodiment volume, simultaneously, at resistor volume definite time, the utility model discloses more that the resistance core can be installed in the automobile-used discharge resistor, corresponding, the utility model discloses the automobile-used discharge resistor's of embodiment load capacity is stronger.

According to some embodiments of the utility model the automobile-used discharge resistor, be equipped with the fixed slot with the insulating part looks adaptation of resistance core on the chamber wall of inner chamber, the resistance core passes through the fixed slot joint in the inner chamber. The fixing groove matched with the insulating part of the resistor core is formed in the cavity wall of the inner cavity, so that the resistor core can be clamped in the inner cavity, and the resistor core is prevented from deviating in the inner cavity.

According to some embodiments of the utility model discloses an automobile-used discharge resistor, the casing is the aluminium work piece. The aluminum has light weight and good heat conductivity, reduces the mass of the discharge resistor for the vehicle, and improves the heat dissipation effect of the discharge resistor for the vehicle.

According to the utility model discloses some embodiments automobile-used discharge resistor still include a plurality of U type mica, during U type mica located the inner chamber, and be connected with the chamber wall of inner chamber, U type mica's inside is located to the resistance core. Through the arrangement of the U-shaped mica, the insulation between the shell and the resistor core is enhanced.

According to the utility model discloses some embodiments automobile-used discharge resistor still include a plurality of electrical connector, connect through electrical connector electricity between the resistance core. Through setting up electric connector, can realize the electric connection of two resistance cores.

According to some embodiments of the present invention, the electrical connector is a wire. The wire has simple structure and is easy to realize.

According to some embodiments of the utility model the automobile-used discharge resistor, seted up the radiating groove on the outer wall of casing. The radiating grooves are formed in the outer wall of the shell, so that the contact area between the shell and the outside is increased, and the radiating effect of the shell is further enhanced.

According to the utility model discloses some embodiments automobile-used discharge resistor, still include the filler, the filler is located in the inner chamber, the filler is heat conduction insulating material. Through filling the filler in the cavity, the filler can fix the resistance main body, and simultaneously, the heat generated by the work of the resistance main body can be transferred to the shell through the filler, so that the heat dissipation effect of the vehicle discharge resistor is improved.

According to some embodiments of the present invention, the filler includes filling cement and filling resin, and the filling resin is disposed outside the filling cement.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural diagram of a discharge resistor for a vehicle according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the discharge resistor of the vehicle shown in FIG. 1 with filler removed;

fig. 3 is a sectional view a-a of the discharge resistor for vehicles shown in fig. 1.

Reference numerals:

a housing 100; an inner cavity 110; a fixing groove 120;

a resistive core 200;

a terminal 300;

u-shaped mica 400;

an electrical connector 500;

a filler 600.

Detailed Description

This section will describe in detail the embodiments of the present invention, the preferred embodiments of which are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can visually and vividly understand each technical feature and the whole technical solution of the present invention, but it cannot be understood as a limitation to the scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The following describes the discharge resistor for a vehicle according to the present invention in detail with reference to fig. 1 to 3.

Referring to fig. 1 to 3, a discharge resistor for a vehicle according to an embodiment of the present invention includes a case 100, a resistor main body, and a terminal 300.

An inner cavity 110 is arranged in the shell 100; the resistor main body is arranged in the inner cavity 110 and comprises a plurality of resistor cores 200 which are electrically connected with each other, and the resistor cores 200 are winding mica plates or thick film type resistor ceramic substrates; the terminal 300 is provided on the case 100, one end of the terminal 300 is electrically connected to the resistor main body, and the other end of the terminal 300 extends to the outside.

For example, as shown in fig. 1 to 3, a discharge resistor for a vehicle according to an embodiment of the present invention includes a case 100, a resistor main body, a terminal 300, and a filler 600. An inner cavity 110 is arranged in the shell 100; the resistor main body is arranged in the inner cavity 110, the resistor main body can comprise a plurality of resistor cores 200, and the insulating parts of the resistor cores 200 can be fixedly connected with the cavity wall of the inner cavity 110, so that the resistor cores 200 are fixed in the inner cavity 110; a mounting hole may be formed in the housing 100, the terminal 300 is inserted into the mounting hole, one end of the terminal 300 extends into the inner cavity 110 and is electrically connected to the conductive portion of the resistor core 200, and the other end of the terminal 300 extends to the outside. The resistor core 200 can be a wire-wound mica plate or a thick-film resistor ceramic substrate, and the wire-wound mica plate and the thick-film resistor ceramic substrate have small volumes, so that the volume occupied by the vehicle discharge resistor is correspondingly reduced; simultaneously, in the resistor of certain volume, the utility model discloses can install more wire winding mica plate or thick film formula resistance ceramic substrate in the automobile-used discharge resistor to increase automobile-used discharge resistor's load capacity.

In some embodiments of the present invention, the fixing groove 120 adapted to the insulation portion of the resistor core 200 is disposed on the wall of the inner cavity 110, and the resistor core 200 is connected to the inner cavity 110 through the fixing groove 120. For example, as shown in fig. 2, the fixing groove 120 is opened on the opposite cavity wall of the inner cavity 110, the two opposite ends of the resistor core 200 may be both insulation parts, and the insulation part of the resistor core 200 is clamped in the fixing groove 120, so that the resistor core 200 is fixed in the inner cavity 110. The fixing groove 120 is formed in the wall of the inner cavity 110, so that the resistor core 200 can be fixed in the inner cavity 110, and the resistor core 200 is prevented from being displaced in the inner cavity 110.

Specifically, when the resistor core 200 is a winding mica plate, the resistance wires of the winding mica plate are wound in the middle of the mica substrate, the two ends of the winding mica plate are insulated mica substrates, and the mica substrates at the two ends of the winding mica plate are clamped in the fixing grooves 120; when the resistor core 200 is a thick film type resistor ceramic substrate, the conductive coating of the thick film type resistor ceramic substrate covers the middle part of the ceramic substrate, the two ends of the thick film type resistor ceramic substrate are insulated ceramic substrates, and the ceramic substrates at the two ends of the thick film type resistor ceramic substrate are clamped in the fixing grooves 120.

In some embodiments of the present invention, the housing 100 is an aluminum part. The aluminum part has light weight and good thermal conductivity, and the housing 100 made of aluminum can reduce the mass of the vehicle discharge resistor and improve the heat dissipation effect of the vehicle discharge resistor.

Further, the utility model discloses vehicle discharge resistor still includes a plurality of U type mica 400, and in the inner chamber 110 was located to U type mica 400, and was connected with the chamber wall of inner chamber 110, the inside of U type mica 400 was located to resistance core 200. For example, as shown in fig. 2 and 3, two resistor cores 200 may be installed in the inner cavity 110, correspondingly, two U-shaped micas 400 are installed in the inner cavity 110, one resistor core 200 is respectively installed in each of the two U-shaped micas 400, and the U-shaped micas 400 may be fixedly connected to the cavity wall of the inner cavity 110. The U-shaped mica 400 has good insulation properties, and the provision of the U-shaped mica 400 can isolate the resistor core 200 from the case 100, thereby enhancing the insulation properties of the vehicle discharge resistor.

In some embodiments of the present invention, a plurality of electrical connectors 500 are further included, and the electrical connectors 500 are electrically connected to the conductive portion of the resistor core 200. For example, as shown in fig. 2 and 3, two resistive cores 200 may be mounted in the inner cavity 110, and the two resistive cores 200 may be connected in series by an electrical connector 500. Workers can connect the resistor cores 200 in series, parallel or series-parallel through the electrical connectors 500 according to actual requirements so as to realize different loads of the discharge resistor for the vehicle.

Specifically, the electrical connector 500 is a wire. The wire has simple structure and is easy to realize.

Optionally, the electrical connector 500 may be a metal connector such as a copper sheet or an aluminum sheet, besides the electrical connector 500 is a wire.

In some embodiments of the present invention, the outer wall of the casing 100 is provided with heat dissipation grooves. For example, as shown in fig. 1, the heat dissipation groove is opened on the outer wall of the case 100. The outer wall of the casing 100 is provided with the heat dissipation groove, so that the contact area between the casing 100 and the outside is increased, and the heat dissipation effect of the casing 100 is further enhanced.

In some embodiments of the present invention, the present invention further comprises a filler 600, the filler 600 is disposed in the inner cavity 110, and the filler 600 is a heat conductive and insulating material. For example, as shown in fig. 1, the inner cavity 110 is filled with a filler 600. Through filling filler 600 in inner chamber 110, filler 600 can the fixed resistance main part, and the produced heat of resistance main part work can transmit casing 100 through filler 600 on simultaneously, and then improved the utility model discloses the radiating effect of automobile-used discharge resistor.

Further, the filler 600 includes filler cement and filler resin, and in this case, the filler resin is located on the outer side of the filler 600, and the filler cement is located on the inner side of the filler 600. Through set up one deck filling resin outside filling cement, filling resin also can play the guard action to filling cement when heat conduction, and then increase automobile-used discharge resistor's life.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A discharge resistor for a vehicle, comprising:

the device comprises a shell (100), wherein an inner cavity (110) is arranged in the shell (100);

the resistor main body is arranged in the inner cavity (110), the resistor main body comprises a plurality of resistor cores (200) which are electrically connected with each other, and the resistor cores (200) are wire wound mica plates or thick film type resistor ceramic substrates;

the terminal (300) is arranged on the shell (100), one end of the terminal (300) is electrically connected with the resistor main body, and the other end of the terminal (300) extends to the outside.

2. The vehicular discharge resistor according to claim 1, wherein a fixing groove (120) adapted to an insulating portion of the resistor core (200) is formed on a wall of the inner cavity (110), and the resistor core (200) is clamped in the inner cavity (110) through the fixing groove (120).

3. The vehicular discharge resistor according to claim 1, wherein the case (100) is an aluminum piece.

4. The vehicular discharge resistor according to claim 3, further comprising a plurality of U-shaped micas (400), wherein the U-shaped micas (400) are disposed in the inner cavity (110) and connected to the wall of the inner cavity (110), and the resistor core (200) is disposed inside the U-shaped micas (400).

5. The vehicular discharge resistor according to claim 1, further comprising a plurality of electrical connectors (500), wherein the resistive cores (200) are electrically connected to each other through the electrical connectors (500).

6. The vehicular discharge resistor according to claim 5, wherein the electrical connection member (500) is a wire.

7. The vehicular discharge resistor according to claim 1, wherein a heat dissipating groove is formed on an outer wall of the case (100).

8. The vehicular discharge resistor according to claim 1, further comprising a filler (600), wherein the filler (600) is disposed in the inner cavity (110), and wherein the filler (600) is a thermally conductive and insulating material.

9. The vehicular discharge resistor according to claim 8, wherein the filler (600) comprises a filler cement and a filler resin, and the filler resin is provided on an outer side of the filler cement.