CN215641419U - Connection structure of lithium cell test probe syringe needle - Google Patents
Connection structure of lithium cell test probe syringe needle Download PDFInfo
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- CN215641419U CN215641419U CN202121712661.9U CN202121712661U CN215641419U CN 215641419 U CN215641419 U CN 215641419U CN 202121712661 U CN202121712661 U CN 202121712661U CN 215641419 U CN215641419 U CN 215641419U
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Abstract
The utility model relates to a connecting structure of a lithium battery test probe needle head, which comprises a probe main body and a needle head, wherein a riveting part capable of expanding and deforming in the radial direction is arranged on the end part of the probe main body, a positioning part protruding out of the riveting part is also arranged on the end part of the probe main body, a jack matched with the probe main body is arranged on the needle head, a groove corresponding to and matched with the riveting part in position is arranged on the edge of the jack in a surrounding manner, a notch corresponding to and matched with the positioning part in position is arranged in the jack, and the probe main body and the needle head are connected through the riveting part deformed and inserted into the groove under the action of external force and are fixed through welding. This connection structure of lithium cell test probe syringe needle reasonable in design can satisfy the probe main part in the accurate location demand of syringe needle to adopt dual fixed mode to realize the reliability of linkage effect, guarantee the quality of product.
Description
Technical Field
The utility model relates to the field of lithium battery testing, in particular to a connecting structure of a lithium battery testing probe needle head.
Background
Traditional lithium battery test probe uses single material integrated processing to form more, and for reducing material cost and processing degree of difficulty, the probe main part and syringe needle are processed respectively to the optional different material, then fix the two equipment as the product. How to ensure the positioning accuracy of the probe body and the needle head and the reliability of connection is the key for the good and bad product quality.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to overcome the defects of the prior art, the connecting structure of the probe needle head of the lithium battery test probe is provided.
In order to achieve the technical effects, the utility model adopts the technical scheme that: the utility model provides a connection structure of lithium cell test probe syringe needle, includes probe main part and syringe needle, but the tip of probe main part encloses the riveting portion that is equipped with radial expansion deformation, and the tip of probe main part still is provided with the location portion of protrusion riveting portion, set up the jack that matches with the probe main part on the syringe needle, the jack edge encloses and is equipped with the recess that corresponds and match with the riveting portion position, is provided with the breach that corresponds and match with location portion position in the jack, by deforming the riveting portion that inserts the recess under the exogenic action between probe main part and the syringe needle and connect and pass through welded fastening.
Preferably, the axial section of the riveting part is triangular.
Preferably, the fit clearance between the positioning part and the notch is filled with solder paste.
Preferably, the number of the positioning parts is two, and the positioning parts are symmetrically distributed on two sides of the end part of the probe main body.
Preferably, one end of the needle head far away from the probe body is provided with a current collecting contact.
Preferably, the electrical conductivity of the tip is less than the electrical conductivity of the probe body, and the hardness of the tip is greater than the hardness of the probe body.
Preferably, the probe body surface is provided with a flat surface in the axial direction.
Compared with the prior art, the utility model has the beneficial effects that: this connection structure reasonable in design can satisfy the probe main part in the accurate location demand of syringe needle to adopt dual fixed mode to realize the reliability of connection effect, guarantee the quality of product.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is apparent that the described embodiments are some, but not all embodiments of the present invention.
Drawings
FIG. 1 is an exploded view of a connection structure of a lithium battery test probe tip according to the present invention;
FIG. 2 is a cross-sectional view of an end of the probe body of the present invention;
FIG. 3 is a schematic view of the structure of the needle of the present invention;
the reference numbers and corresponding designations in the drawings are: 1. the probe comprises a probe body, 11 parts of riveting parts, 12 parts of positioning parts, 13 parts of planes, 2 parts of needle heads, 21 parts of grooves, 22 parts of notches and 23 parts of current collecting contacts.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The embodiment provides a connection structure of a probe needle head for testing a lithium battery, as shown in fig. 1-3, the connection structure includes a probe main body 1 and a needle head 2, a riveting part 11 capable of radially expanding and deforming is arranged around an end of the probe main body 1, preferably, an axial cross section of the riveting part 11 is triangular, and the shape design is more beneficial to radial expansion and deformation of the riveting part 11; the end part of the probe main body 1 is also provided with two positioning parts 12 protruding out of the riveting part 11, and preferably, the two positioning parts 12 are symmetrically distributed on two sides of the end part of the probe main body 1; a jack matched with the probe main body 1 is formed in the needle head 2, a groove 21 corresponding to and matched with the riveting part 11 is formed in the edge of the jack in a surrounding mode, a notch 22 corresponding to and matched with the positioning part 12 is formed in the jack, preferably, a matching gap between the positioning part 12 and the notch 22 is filled with solder paste, and the positioning part 12 can be welded in the notch 22 after heating for further reinforcement; the probe body 1 and the needle 2 are connected by the riveting part 11 deformed and inserted into the groove 21 under the action of external force and are fixed by welding.
During the equipment, probe main part 1 and syringe needle 2 rely on location portion 12 and breach 22 to carry out accurate butt joint, with the unanimous requirement of satisfying the axiality, after location portion 12 inserts breach 22, continuously apply 1 effort of probe main part towards syringe needle 2, make the crooked recess 21 of inserting of riveting portion 11, realize the fixed connection of probe main part 1 and syringe needle 2, for strengthening the fixed effect of the two, add in advance in the breach 22 and have the solder paste fill and the clearance between location portion 12, treat that riveting portion 11 inserts behind the recess 21, the heating carries out welded fastening. Above-mentioned this connection structure reasonable in design can satisfy probe main part 1 in the accurate location of syringe needle 2, adopts dual fixed mode to realize the reliability of connection effect, guarantees the quality of product.
The end of the needle head 2 far away from the probe body 1 is provided with a current collecting contact 23.
The current collecting contact 23 is used for puncturing an oxide film on a lithium battery pole for current testing, and in this embodiment, the current collecting contact 23 is in a shape of a polygonal pyramid.
The conductivity of the needle head 2 is less than that of the probe body 1, and the hardness of the needle head 2 is greater than that of the probe body 1.
In the material selection of the embodiment, beryllium copper with high hardness is selected for the needle head 2, and chromium zirconium copper with low hardness and high conductivity is selected for the probe main body 1, so that the dual requirements of conductivity and hardness are met.
The surface of the probe body 1 is provided with a flat surface 13 along the axial direction. When the probe is installed on a machine, the probe can be installed and positioned through the plane 13, and the direction of the probe is convenient to confirm.
The present invention is not limited to the above-described embodiments, and various modifications made without inventive step from the above-described concept will fall within the scope of the present invention for those skilled in the art.
Claims (7)
1. The utility model provides a connection structure of lithium cell test probe syringe needle, its characterized in that, includes probe main part (1) and syringe needle (2), but the tip of probe main part (1) encloses riveting portion (11) that is equipped with radial expansion deformation, and the tip of probe main part (1) still is provided with location portion (12) of protrusion riveting portion (11), set up the jack that matches with probe main part (1) on syringe needle (2), the jack edge encloses recess (21) that is equipped with and corresponds and match with riveting portion (11) position, is provided with breach (22) that correspond and match with location portion (12) position in the jack, be connected and pass through welded fastening by riveting portion (11) that warp under the exogenic action and insert recess (21) between probe main part (1) and syringe needle (2).
2. The lithium battery test probe tip connection structure as claimed in claim 1, wherein the axial cross-section of the rivet (11) is triangular.
3. The lithium battery test probe tip connection structure as claimed in claim 1, wherein a fitting gap between the positioning portion (12) and the notch (22) is filled with solder paste.
4. The lithium battery test probe needle head connecting structure according to claim 3, wherein the number of the positioning parts (12) is two, and the two positioning parts are symmetrically distributed on both sides of the end part of the probe body (1).
5. The lithium battery test probe tip connection structure as claimed in claim 1, wherein the tip (2) is provided with a current collection contact (23) at an end thereof remote from the probe body (1).
6. The lithium battery test probe tip connection structure according to any one of claims 1 to 5, wherein the electrical conductivity of the tip (2) is less than the electrical conductivity of the probe body (1), and the hardness of the tip (2) is greater than the hardness of the probe body (1).
7. The lithium battery test probe tip connection structure as claimed in claim 1, wherein the surface of the probe body (1) is provided with a flat surface (13) in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121712661.9U CN215641419U (en) | 2021-07-27 | 2021-07-27 | Connection structure of lithium cell test probe syringe needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121712661.9U CN215641419U (en) | 2021-07-27 | 2021-07-27 | Connection structure of lithium cell test probe syringe needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215641419U true CN215641419U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121712661.9U Active CN215641419U (en) | 2021-07-27 | 2021-07-27 | Connection structure of lithium cell test probe syringe needle |
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| Country | Link |
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| CN (1) | CN215641419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
-
2021
- 2021-07-27 CN CN202121712661.9U patent/CN215641419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 12, Jinzhou Road, Changfu Street, Changshu City, Suzhou City, Jiangsu Province, 215500 Patentee after: Suzhou Dongheng Numerical Control Electronics Co.,Ltd. Address before: 215000 Zhanshang village, Huangqiao street, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: Suzhou Dongheng Numerical Control Electronics Co.,Ltd. |