CN219245631U

CN219245631U - Current probe and braided wire connection structure

Info

Publication number: CN219245631U
Application number: CN202223514897.9U
Authority: CN
Inventors: 孙炳贵
Original assignee: Kangxinda Technology Suzhou Co ltd
Current assignee: Kangxinda Technology Suzhou Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-23
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a connection structure of a current probe and a braided wire, which comprises a current needle, a braided wire and a fixed sleeve, wherein the current needle comprises a hollow needle tube with a test head and a voltage needle, the center of the top of the hollow needle tube is provided with a bump, and the voltage needle is coaxially arranged in the hollow needle tube and leads the two ends of the voltage needle to extend out of the test head and the bump respectively; the upper terminal and the lower terminal are respectively connected to two ends of the braided wire, the middle of the lower terminal is provided with an assembly groove, when the lower terminal is installed with the current needle, the convex block is in interference fit connection with the assembly groove and is welded and fixed with the assembly groove, and screws are screwed into two opposite sides of the lower terminal to fix the lower terminal with the hollow needle tube.

Description

Current probe and braided wire connection structure

Technical Field

The utility model relates to the technical field of battery manufacturing, in particular to a connection structure of a current probe and a braided wire.

Background

Along with the gradual maturity of new energy industry, the types of batteries are also more and more abundant, the battery module of the new energy vehicle is usually formed by connecting a plurality of electric cores through connectors, and the electric cores need to be charged and activated through probes after the electric cores are assembled; and the current pin of the probe needs to be connected with a terminal to be connected with an external power supply so as to charge and activate the battery cell group.

The existing probe braided wire is generally provided with threads at the tail part of the probe, 2 nuts and waveform gaskets are fastened on the threads to compress the braided wire, and larger contact resistance exists between the nuts and the probe and between the nuts and the braided wire, so that the performance of a product can be influenced to a certain extent, and a new current probe and braided wire connecting structure is required to be designed to solve the problem.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model discloses a connecting structure of a current probe and a braided wire.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the current probe and braided wire connecting structure comprises a current needle, a braided wire and a fixed sleeve, wherein the current needle comprises a hollow needle tube with a test head and a voltage needle, a bump is arranged at the center of the top of the hollow needle tube, and the voltage needle is coaxially arranged in the hollow needle tube and leads two ends of the voltage needle to extend out of the test head and the bump respectively; the outside of voltage needle is isolated with hollow needle tubing through insulating cover, the top of insulating cover is provided with the pin and is fixed with the voltage needle, the both ends of braided wire are connected with terminal and lower terminal respectively, the middle part of lower terminal is provided with the assembly groove, when terminal and electric current needle installation down, the lug interference grafting is in the assembly groove and with the assembly groove welding is fixed, the relative both sides of lower terminal still twist in respectively have the screw with it with hollow needle tubing fixed, the test head top cover of hollow needle tubing is equipped with compression spring, fixed sleeve plug bush is on hollow needle tubing and is restricted between compression spring and lower terminal.

Further, the insulating sleeve comprises a first insulating sleeve, a second insulating sleeve, a third insulating sleeve and a fourth insulating sleeve, the first insulating sleeve is sleeved on the lower section of the voltage needle, the second insulating sleeve and the third insulating sleeve are sleeved on the middle section of the voltage needle, the fourth insulating sleeve is sleeved on the upper section of the voltage needle, the first insulating sleeve, the second insulating sleeve, the third insulating sleeve and the fourth insulating sleeve are mutually inserted, the first insulating sleeve is composed of two separable fifth insulating sleeves, a movable spring is arranged between the two fifth insulating sleeves, and the fourth insulating sleeve and the voltage needle are fixed by the pin.

Further, a silica gel sleeve is sleeved outside the braided wire.

Further, the end heads of the screws are pressed against welding seams of the protruding blocks and the assembly grooves.

Further, the protruding block is a rectangular protruding block, and the assembly groove is a rectangular groove matched with the rectangular block.

Further, a flat pad and a spring pad are sequentially arranged between the screw and the hollow needle tube.

The utility model has the following beneficial effects:

according to the utility model, the rectangular lug on the hollow needle tube is inserted into the rectangular groove of the lower terminal in an interference manner, the contact part of the rectangular groove and the rectangular lug is welded in a laser welding manner, and then, two screws are screwed into the lower terminal to be fixed with the hollow needle tube, so that the screw ends press the welding seams, the connection structure of the braided wire and the lower terminal is more stable, and compared with the fixation of a nut, the contact resistance caused by fastening of the nut is reduced, and the service performance of a product is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of the overall structure of the present disclosure;

FIG. 2 is an enlarged schematic view of the structure at A of the present disclosure;

FIG. 3 is a schematic view of a partial cross-sectional structure of the present disclosure;

FIG. 4 is a schematic view of the structure of the current pin disclosed in the present utility model;

FIG. 5 is a schematic view of an insulating sleeve according to the present disclosure;

fig. 6 is a schematic view showing an exploded structure of an insulating sleeve according to the present disclosure.

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.

Examples

Referring to fig. 1 to 6, a connection structure of a current probe and a braided wire comprises a current needle 10, a braided wire 20 and a fixing sleeve 30, wherein a silica gel sleeve (not shown) is sleeved outside the braided wire, the current needle comprises a hollow needle tube 11 with a test head and a voltage needle 12, a bump 15 is arranged at the center of the top of the hollow needle tube, and the voltage needle is coaxially arranged in the hollow needle tube and extends from the test head and the bump at two ends of the voltage needle respectively; the outside of voltage needle is isolated with hollow needle tubing through insulating cover 13, the top of insulating cover is provided with pin 14 and voltage needle is fixed, the both ends of braided wire are connected with upper terminal 21 and lower terminal 22 respectively, the middle part of lower terminal is provided with mounting groove 221, as the preferred, the lug is rectangular bump, the mounting groove is the rectangular groove with rectangular piece looks adaptation, when lower terminal and current needle are installed, the lug interference grafting is in the mounting groove and with the mounting groove welded fastening, the opposite both sides of lower terminal have still screwed in respectively and have screw 50 fixed with hollow needle tubing with it, the end of screw is pressed the welding seam setting of lug and mounting groove, the test head top cover of hollow needle tubing is equipped with compression spring 40, the fixed sleeve plug bush is on hollow needle tubing and is restricted between compression spring and lower terminal, through above-mentioned mode, can let braided wire and hollow needle tubing's connection structure more stable, compared with adopting the nut to fix, the contact resistance that the nut fastening leads to has been reduced, the service performance of product has been improved.

In one embodiment, the insulating sleeve comprises a first insulating sleeve 131, a second insulating sleeve 132, a third insulating sleeve 133 and a fourth insulating sleeve 134, the first insulating sleeve is sleeved on the lower section of the voltage needle, the second insulating sleeve and the third insulating sleeve are sleeved on the middle section of the voltage needle, the fourth insulating sleeve is sleeved on the upper section of the voltage needle, the first insulating sleeve, the second insulating sleeve, the third insulating sleeve and the fourth insulating sleeve are mutually inserted, the first insulating sleeve consists of two separable fifth insulating sleeves 1311, a movable spring 135 is arranged between the two fifth insulating sleeves, the fourth insulating sleeve is fixed with the voltage needle by a pin, the insulating sleeve adopting the structure can prevent the voltage needle from being contacted with the hollow needle tube to cause short circuit due to the contact between the hollow needle tube and other parts, and a movable spring is arranged between the two fifth insulating sleeves to avoid the failure of the insulating effect due to the position deviation.

In one embodiment, a flat pad and a spring pad (both not shown) are sequentially provided between the screw and the hollow needle tube, so that the tightness between them can be improved.

The foregoing embodiments are merely illustrative of the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same according to the present utility model, not to limit the scope of the present utility model. All changes and modifications that come within the meaning and range of equivalency of the utility model are to be embraced within their scope.

Claims

1. The connecting structure of the current probe and the braided wire comprises a current needle, the braided wire and a fixed sleeve, and is characterized in that the current needle comprises a hollow needle tube with a test head and a voltage needle, a convex block is arranged at the center of the top of the hollow needle tube, and the voltage needle is coaxially arranged in the hollow needle tube and leads two ends of the voltage needle to extend out of the test head and the convex block respectively; the outside of voltage needle is isolated with hollow needle tubing through insulating cover, the top of insulating cover is provided with the pin and is fixed with the voltage needle, the both ends of braided wire are connected with terminal and lower terminal respectively, the middle part of lower terminal is provided with the assembly groove, when terminal and electric current needle installation down, the lug interference grafting is in the assembly groove and with the assembly groove welding is fixed, the relative both sides of lower terminal still twist in respectively have the screw with it with hollow needle tubing fixed, the test head top cover of hollow needle tubing is equipped with compression spring, fixed sleeve plug bush is on hollow needle tubing and is restricted between compression spring and lower terminal.

2. The connection structure of current probe and braided wire according to claim 1, wherein the insulating sleeve comprises a first insulating sleeve, a second insulating sleeve, a third insulating sleeve and a fourth insulating sleeve, the first insulating sleeve is sleeved at the lower section of the voltage needle, the second insulating sleeve and the third insulating sleeve are sleeved at the middle section of the voltage needle, the fourth insulating sleeve is sleeved on the upper section of the voltage needle, the first insulating sleeve, the second insulating sleeve, the third insulating sleeve and the fourth insulating sleeve are mutually inserted, the first insulating sleeve consists of two separable fifth insulating sleeves, a movable spring is arranged between the two fifth insulating sleeves, and the fourth insulating sleeve and the voltage needle are fixed by the pin.

3. The current probe and braided wire connection structure of claim 1 wherein said braided wire is externally sleeved with a silicone sleeve.

4. The current probe and braided wire connection structure of claim 1, wherein the screw tip is disposed against the weld of the bump and the fitting groove.

5. The current probe and braided wire connection structure of claim 1, wherein the bump is a rectangular bump and the fitting groove is a rectangular groove adapted to the rectangular block.

6. The connection structure of a current probe and a braided wire according to claim 1, wherein a flat pad and a spring pad are sequentially arranged between the screw and the hollow needle tube.