CN216560711U

CN216560711U - Probe pin

Info

Publication number: CN216560711U
Application number: CN202123098988.4U
Authority: CN
Inventors: 廖飞飞; 雷振辉
Original assignee: Dongguan Yingzhibao Electronic Technology Co ltd
Current assignee: Dongguan Yingzhibao Electronic Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-17
Anticipated expiration: 2031-12-10

Abstract

The utility model belongs to the technical field of battery testing, and particularly discloses a probe, which comprises a current needle, a voltage needle and a probe seat, wherein the voltage needle is arranged in the current needle in an insulation penetrating manner to form a probe main body, and the voltage needle is in a sheet shape; the probe seat is sleeved on the probe main body; the current needle comprises a needle head and a needle rod, and the needle head is detachably connected with the needle rod. According to the probe provided by the utility model, the current needle is of a split structure, the damage speed of the current needle is reduced, when the current needle head is damaged, the whole probe does not need to be disassembled to replace the current needle, only the damaged current needle head needs to be replaced, the replacement cost of the probe is reduced, meanwhile, the voltage needle is of a sheet structure, the contact area of the voltage needle and the lug is increased, and the probe can be ensured to be in full contact with the lug.

Description

Probe pin

Technical Field

The utility model belongs to the technical field of battery testing, and particularly relates to a probe.

Background

In order to convert active materials in a lithium battery into materials having electrochemical effects by first charging and to form an effective passivation film or SEI film on an electrode to secure electrochemical properties of a cell, the lithium battery needs to be formed. In the formation of lithium batteries, in order to facilitate connection, a current probe is usually connected to a corresponding electrode of a lithium battery to test the current or voltage or temperature change of the lithium battery.

The current probe is applied to the formation, capacity grading and detection processes of the battery, is used as a connector between a transmission lead and a battery tab, and achieves the purpose of low-resistance current transmission by puncturing an oxide layer on the surface of the battery tab.

The current needle of traditional probe is the integral type structure, can't satisfy the requirement of high wearability, and the current needle easily destroys, and the replacement cost is high after the current needle destroys, moreover, the probe appears with the condition of utmost point ear incomplete contact easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the probe is provided aiming at the defects existing in the prior art, the current needle is of a split structure, the damage speed of the current needle is reduced, the replacement cost of the current needle is reduced, and meanwhile, the voltage needle is in a sheet shape, so that the probe can be ensured to be fully contacted with the lug.

In order to achieve the purpose, the utility model adopts the following technical scheme: a probe comprises a current pin, a voltage pin and a probe seat, wherein the voltage pin is arranged in the current pin in an insulation penetrating mode to form a probe body, and the voltage pin is sheet-shaped; the probe seat is sleeved on the probe main body; wherein, the electric current needle includes syringe needle and needle bar, the syringe needle with the needle bar is detachable connects.

Further, the needle comprises a fixing piece, wherein a first thread part is arranged inside the fixing piece, and a second thread part which is meshed with the first thread part is arranged on the periphery of the needle head.

Further, mounting one end is provided with the draw-in groove, needle bar one end be provided with be used for with the card of draw-in groove cooperation joint is protruding, block protruding with the mutual butt of syringe needle.

Further, the voltage needle comprises a first base body and a second base body, and the first base body and the second base body are integrally formed.

Further, the thickness of the first substrate is equal to the thickness of the second substrate.

Further, the width of the first substrate is greater than the width of the second substrate.

Furthermore, the end face of the first base body is a sawtooth surface.

Furthermore, the end face of the needle head is a sawtooth surface.

Further, the probe seat includes spring and support frame, the support frame include a cylinder and with cylinder fixed connection's mounting panel, be provided with two mounting holes on the mounting panel, two the mounting hole symmetry sets up, the support frame is inside to be provided with and to be used for supplying the shoulder hole that the needle bar passed, the spring cover is established on the needle bar, just spring one end with shoulder hole butt, the other end of spring with needle bar tip looks butt.

Furthermore, the needle bar is close to one end of the needle head is provided with two grooves, the two grooves are symmetrically arranged, the needle head is correspondingly provided with two convex parts, and the two convex parts are accommodated in the two grooves.

The utility model has the beneficial effects that: a probe comprises a current pin, a voltage pin and a probe seat, wherein the voltage pin is arranged in the current pin in an insulation penetrating mode to form a probe body, and the voltage pin is sheet-shaped; the probe seat is sleeved on the probe main body; wherein, the electric current needle includes syringe needle and needle bar, the syringe needle with the needle bar is detachable connects. According to the probe provided by the utility model, the current needle is of a split structure, the damage speed of the current needle is reduced, when the current needle head is damaged, the whole probe does not need to be disassembled to replace the current needle, only the damaged current needle head needs to be replaced, the replacement cost of the probe is reduced, meanwhile, the voltage needle is of a sheet structure, the contact area of the voltage needle and the lug is increased, and the probe can be ensured to be in full contact with the lug.

Drawings

FIG. 1 is a schematic diagram of a probe according to an embodiment of the present invention;

FIG. 2 is a second schematic structural view of a probe according to the second embodiment of the present invention;

FIG. 3 is a third schematic diagram of a probe according to an embodiment of the present invention;

FIG. 4 is a fourth illustration of a probe structure according to an embodiment of the present invention;

FIG. 5 is a fifth schematic view of a probe according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a current pin head according to an embodiment of the present invention.

Wherein: 1. a current pin; 11. a needle head; 111. a second threaded portion; 112. a convex portion; 12. a needle bar; 121. clamping convex; 2. a voltage pin; 21. a first substrate; 22. a second substrate; 3. a probe base; 31. a spring; 32. a support frame; 321. a cylinder; 322. mounting a plate; 4. a fixing member; 41. a first threaded portion; 5. mounting holes; 6. a stepped hole; 7. a nut; 8. a gasket.

Detailed Description

In the description of the application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal ", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 application, unless explicitly stated or limited otherwise, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, or an electrical connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In order to make the technical solutions and advantages of the present invention clearer, the present invention and its advantages will be described in further detail below with reference to the following detailed description and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1 to 6, a probe comprises a current pin 1, a voltage pin 2 and a probe seat 3, wherein the voltage pin 2 is arranged in the current pin 1 in an insulating penetrating manner to form a probe body, and the voltage pin 2 is in a sheet shape; the probe seat 3 is sleeved on the probe main body; wherein, current needle 1 includes syringe needle 11 and needle bar 12, and syringe needle 11 and needle bar 12 detachable connection. According to the probe provided by the utility model, the current needle 1 is of a split structure, the damage speed of the current needle 1 is reduced, when the needle head 11 is damaged, the whole probe does not need to be disassembled to replace the current needle 1, only the damaged needle head 11 needs to be replaced, the replacement cost of the probe is reduced, meanwhile, the voltage needle 2 is of a sheet structure, the contact area between the voltage needle 2 and a lug is increased, and the probe can be ensured to be in full contact with the lug.

Preferably, the needle further comprises a fixing member 4, wherein a first thread part 41 is arranged inside the fixing member 4, and a second thread part 111 for meshing connection with the first thread part 41 is arranged on the periphery of the needle 11. This kind of structural design can strengthen the fastness of connection of syringe needle 11 and needle bar 12, through the screw thread closure connection of soon, can guarantee that the terminal surface of syringe needle 11 and the mutual butt of the terminal surface of needle bar 12 are in the same place, has increased area of contact, can improve the conductivity, guarantees that the heavy current passes through.

The utility model also comprises a nut 7 and a washer 8, wherein one end of the needle rod 12 far away from the needle 11 is provided with a third thread part, the two nuts 7 are locked on the third thread part, and the washer 8 is arranged between the two nuts 7.

It should be noted that, in practical application, the needle head 11 and the needle rod 12 adopt a split structure, so that the needle head 11 and the needle rod 12 can be diversified in material selection, the needle head 11 can be made of a metal material with strong wear resistance, high hardness and moderate conductivity, the needle rod 12 can be preferably made of a metal material with higher conductivity, and the needle rod 12 has relatively low requirements on wear resistance and hardness, so that a suitable metal material can be selected for preparation according to production requirements, thereby not only reducing the production cost, but also effectively prolonging the service life of the current needle 1 and reducing the use cost of the probe.

Preferably, one end of the fixing member 4 is provided with a clamping groove, one end of the needle rod 12 is provided with a clamping protrusion 121 for matching and clamping with the clamping groove, and the clamping protrusion 121 and the needle 11 are abutted against each other. This design enhances the security of the connection between the shank 12 and the fixing member 4.

Preferably, the voltage pin 2 includes a first base 21 and a second base 22, the first base 21 and the second base 22 are integrally formed, the thickness of the first base 21 is equal to that of the second base 22, the width of the first base 21 is greater than that of the second base 22, and the end surface of the first base 21 is a sawtooth surface. The structural design can increase the contact area of the voltage pin 2 and the pole lug, and simultaneously can reduce the space occupancy rate of the voltage pin 2, so that the contact between the voltage pin 2 and the current pin 1 is avoided, and the probe is compact in structure and reasonable in design.

Preferably, the end surface of the needle 11 is a sawtooth surface, and in the structural design, the sawtooth densely distributed on the end surface of the needle 11 punctures the pole oxidation film of the lithium battery, so that the current conduction quantity can be increased.

Preferably, the probe holder 3 includes a spring 31 and a support frame 32, the support frame 32 includes a cylinder 321 and a mounting plate 322 fixedly connected to the cylinder 321, two mounting holes 5 are provided on the mounting plate 322, the two mounting holes 5 are symmetrically disposed, a stepped hole 6 for the needle rod 12 to pass through is provided inside the support frame 32, the spring 31 is sleeved on the needle rod 12, one end of the spring 31 abuts against the stepped hole 6, and the other end of the spring 31 abuts against the end of the needle rod 11.

Specifically, when the probe operation is performed, the spring 31 contracts, and the probe body can slide in the support frame 32, so that the current needle 1 and the voltage needle 2 can be pressed on a tab or a pole, and after the operation is finished, the spring 31 extends, and the probe body slides and returns to the original position.

Preferably, the end of the needle shaft 12 close to the needle 11 is provided with two grooves, the two grooves are symmetrically arranged, the needle 11 is correspondingly provided with two protrusions 112, and the two protrusions 112 are accommodated in the two grooves. With this structure, when the needle 11 and the needle shaft 12 are fitted, the two protrusions 112 are inserted and accommodated in the grooves, thereby limiting the radial rotation of the needle 11 and achieving the positioning effect. When the probe is in operation, the needle head 11 can be prevented from rotating, the connection tightness of the needle head 11 and the needle rod 12 is improved, and the passing of large current is ensured.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should understand that the embodiments as a whole may be combined as appropriate to form other embodiments understood by those skilled in the art.

Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the utility model as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A probe, characterized by: comprises that

A current needle (1),

the voltage needle (2) is arranged in the current needle (1) in an insulation penetrating mode to form a probe main body, and the voltage needle (2) is sheet-shaped;

the probe seat (3), the probe seat (3) is sleeved on the probe main body;

wherein, electric current needle (1) includes syringe needle (11) and needle bar (12), syringe needle (11) with needle bar (12) detachable connection.

2. A probe according to claim 1, wherein: the needle is characterized by further comprising a fixing part (4), wherein a first threaded part (41) is arranged inside the fixing part (4), and a second threaded part (111) which is meshed with the first threaded part (41) and connected with the needle head (11) is arranged on the periphery of the needle head.

3. A probe according to claim 2, wherein: fixing piece (4) one end is provided with the draw-in groove, needle bar (12) one end be provided with be used for with the protruding (121) of card of draw-in groove cooperation joint, card protruding (121) with syringe needle (11) butt each other.

4. A probe according to claim 1, wherein: the voltage needle (2) comprises a first base body (21) and a second base body (22), and the first base body (21) and the second base body (22) are integrally formed.

5. A probe according to claim 4, wherein: the thickness of the first substrate (21) is equal to the thickness of the second substrate (22).

6. A probe according to claim 4, wherein: the width of the first substrate (21) is greater than the width of the second substrate (22).

7. A probe according to claim 4, wherein: the end face of the first base body (21) is a sawtooth surface.

8. A probe according to claim 1, wherein: the end surface of the needle head (11) is a sawtooth surface.

9. A probe according to claim 1, wherein: probe seat (3) include spring (31) and support frame (32), support frame (32) including a cylinder (321) and with cylinder (321) fixed connection's mounting panel (322), be provided with two mounting holes (5) on mounting panel (322), two mounting hole (5) symmetry sets up, support frame (32) inside is provided with and is used for supplying shoulder hole (6) that needle bar (12) passed, spring (31) cover is established on needle bar (12), just spring (31) one end with shoulder hole (6) looks butt, the other end of spring (31) with needle bar (12) tip looks butt.

10. A probe according to claim 1, wherein: the needle rod (12) is close to one end of the needle head (11) and is provided with two grooves, the two grooves are symmetrically arranged, the needle head (11) is correspondingly provided with two convex parts (112), and the two convex parts (112) are accommodated in the two grooves.