CN219831209U - High-precision high-current dense-tooth probe - Google Patents

Abstract

The utility model discloses a high-precision large-current dense-tooth probe, which comprises a current needle assembly, a voltage needle assembly and a wire, wherein the current needle assembly comprises a current needle body, a dense-tooth current probe head, a mounting seat and a first spring, and the head end of the current needle body is provided with the dense-tooth current probe head and the tail end of the current needle body is connected with the wire; the outer surface of the dense-tooth current probe head is provided with a plurality of current contact teeth, and the center of the dense-tooth current probe head is provided with a through hole; the mounting seat is slidably sleeved outside the current needle body; the first spring is sleeved on the current needle body; the voltage pin assembly comprises a voltage pin body, an insulating sleeve and a second spring, and the voltage pin body is slidably arranged in the current pin body and the through hole in a penetrating manner; the head of the voltage needle body is sleeved with a spacer bush, and the end face of the voltage needle body falling outside the through hole is provided with voltage contact teeth; the second spring is sleeved outside the voltage pin body. The beneficial effects of the utility model are as follows: the contact resistance and the temperature rise are stable, the battery electrode lug is not damaged, and the method is suitable for batteries of different types.

Description

High-precision high-current dense-tooth probe

Technical Field

The utility model relates to the field of battery manufacturing, in particular to a high-precision high-current dense-tooth probe.

Background

In the current process of detecting charge and discharge of a lithium battery in a later process, current transmission needs to be completed through a test probe, but the test probe is slightly deviated after being used for a period of time, so that uneven gaps are generated when the probe contacts with the battery electrode lugs, the contact area between the probe and the battery electrode lugs is too small, the indentation is deep, the battery electrode lugs are seriously damaged, and the contact resistance between the probe and the battery electrode lugs is too large, so that the transmission effect is affected; in addition, along with the use of the probe, the rebound effect of the voltage pin and the current pin can be poor, so that the voltage pin and the current pin cannot be simultaneously and well contacted with the battery tab, and the current and the voltage cannot be synchronously and stably transmitted.

Disclosure of Invention

In order to solve the problems, the utility model provides a high-precision high-current dense-tooth probe. The probe can ensure that the battery is well connected with the detection equipment, ensures that the contact resistance and the temperature rise are stable, does not damage the battery tab, ensures that the battery is converted in maximum efficiency, and is suitable for batteries of different sizes and different models.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a high-accuracy heavy current dense tooth probe, includes current needle subassembly, voltage needle subassembly and wire, and voltage needle subassembly is coaxial wears to locate in the current needle subassembly, and the wire is connected in the tail end of current needle subassembly, its characterized in that:

the current needle assembly comprises a current needle body, a dense-tooth current probe head, a mounting seat and a first spring, wherein the current needle body is in a hollow tubular shape with two through ends, and the head end of the current needle body is provided with the dense-tooth current probe head and the tail end of the current needle body is connected with a wire; the outer surface of the dense-tooth current probe head is provided with a plurality of current contact teeth for contacting with the battery lugs, and the center of the dense-tooth current probe head is provided with a through hole for the voltage probe assembly to penetrate through; the mounting seat is slidably sleeved outside the current needle body; the first spring is sleeved with a current needle body positioned between the mounting seat and the dense-tooth current probe head, one end of the first spring is connected with the mounting seat, and the other end of the first spring is connected with the dense-tooth current probe head;

the voltage needle assembly comprises a voltage needle body, an insulating sleeve and a second spring, wherein the voltage needle body is slidably arranged in through holes of the current needle body and the dense-tooth current probe head in a penetrating manner, and the insulating sleeve is arranged between the voltage needle body and the current needle body as well as between the voltage needle body and the dense-tooth current probe head; the head of the voltage needle body is sleeved with a spacer, and the end face of the voltage needle body falling outside the through hole is provided with voltage contact teeth; the second spring is sleeved outside the voltage needle body, one end of the second spring is connected with the insulating sleeve, and the other end of the second spring is connected with the spacer sleeve and is used for automatically rebounding after the voltage needle is compressed.

Further, the afterbody of electric current needle body be equipped with the external screw thread, the afterbody cover of electric current needle body be equipped with anticreep nut, the internal screw thread and the external screw thread meshing of anticreep nut for prevent that the mount pad from deviating from in the electric current needle body.

Further, the tail of the current needle body is further sleeved with a lock nut, the lock nut is fixed on the current needle body through threaded connection, one end of the wire is provided with a connecting sheet, and the connecting sheet is sleeved on the tail of the current needle body and located between the lock nut and the anti-falling nut.

Further, the mount pad include pedestal and joint surface, set up the mounting hole that supplies the electric current needle body to run through in the pedestal, one side of pedestal orientation close tooth electric current probe head is equipped with the spring chamber, the outside at the electric current needle body is established to first spring cover to the both ends of first spring connect inner wall in spring chamber, close tooth electric current probe head respectively.

Further, the insulating cover include first insulating cover and second insulating cover, first insulating cover the second insulating cover sets up in the current needle body, first insulating cover is arranged in the current needle body and keeps away from the one side of close tooth current probe head, the second insulating cover is arranged in the current needle body and is close to the one side of close tooth current probe head, and first insulating cover and second insulating cover all with current needle body interference fit.

Further, a flange end cover is arranged at the tail end of the current needle body, a long waist-shaped hole is formed in the tail end of the voltage needle body, which is exposed out of the current needle body, and the length direction of the long waist-shaped hole is consistent with the axis direction of the voltage needle body; the voltage needle body is arranged in the first insulating sleeve, the second insulating sleeve and the flange end cover in a penetrating mode, and an anti-falling pin is arranged in a long-waist-shaped hole of the voltage needle body in a matching mode and used for preventing the voltage needle body from falling out of the current needle body.

The beneficial effects of the utility model are as follows: 1. the probe of the utility model utilizes the spring to flexibly stretch and retract the current needle, the angle of the probe can be automatically corrected within the range of 5 degrees, and the probe is ensured to be fully contacted with the battery electrode lug; 2. the voltage needle body passes through the hollow hole of the current needle body, but the voltage needle can not be separated from the current needle assembly, and can also stretch out and draw back in the current needle assembly to a certain extent, so that the voltage needle and the current needle can be synchronously contacted with the battery lug, and synchronous and stable transmission of current and voltage is realized; and 3, the battery and the detection equipment can be well connected, the contact resistance and the temperature rise are stable, the battery tab is not damaged, the battery is converted in maximum efficiency, and the battery is suitable for batteries of different models and different sizes.

Drawings

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a front view of the present utility model;

FIG. 4 is a side view of the present utility model;

fig. 5 is a cross-sectional view A-A of fig. 2.

Fig. 6 is a partial enlarged view of fig. 4.

Detailed Description

The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The utility model will be described in detail below with reference to the drawings in connection with exemplary embodiments.

The high-precision large-current dense-tooth probe comprises a current needle assembly 17, a voltage needle assembly 18 and a lead 12, wherein the voltage needle assembly 18 is coaxially arranged in the current needle assembly 17 in a penetrating way, and the lead 12 is connected to the tail end of the current needle assembly 17;

the current needle assembly 17 comprises a current needle body 1, a dense-tooth current probe head 2, a mounting seat 4 and a first spring 13, wherein the current needle body 1 is in a hollow tubular shape with two through ends, and the dense-tooth current probe head 2 and a tail end connecting wire 12 are arranged at the head end of the current needle body 1; the outer surface of the dense-tooth current probe head 2, which is contacted with the battery electrode lug, is provided with a plurality of current contact teeth 21 which are used for being contacted with the battery electrode lug, and the center of the dense-tooth current probe head is provided with a through hole for the voltage pin assembly 18 to penetrate through; the mounting seat 4 is slidably sleeved outside the current needle body 1; the first spring 13 is sleeved on the current needle body 1 between the mounting seat 4 and the dense-tooth current probe head 2, one end of the first spring 13 is connected with the mounting seat 4, and the other end of the first spring is connected with the dense-tooth current probe head 2;

the voltage pin assembly 18 comprises a voltage pin body 3, an insulating sleeve 19 and a second spring 14, wherein the voltage pin body 3 is slidably arranged in through holes of the current pin body 1 and the dense-tooth current probe head 2 in a penetrating manner, and the insulating sleeve 19 is arranged between the voltage pin body 3 and the current pin body 1 and between the voltage pin body 3 and the dense-tooth current probe head 2; the head of the voltage needle body 3 is sleeved with a spacer bush 6, and the end face of the voltage needle body 3 falling outside the through hole is provided with a voltage contact tooth 31; the second spring 14 is sleeved outside the voltage needle body 3, one end of the second spring 14 is connected with the insulating sleeve 19, and the other end of the second spring is connected with the spacer 6, and is used for automatically rebounding after the voltage needle is compressed.

In some embodiments of the present utility model, the current contact teeth 21 extend along the axial direction of the current pin body 1, and the heights of the current contact teeth 21 in the axial direction of the current pin body 1 are uniform, so that the current contact teeth 21 can simultaneously contact the battery lugs to form large-area surface contact.

In some embodiments of the present utility model, the close-tooth current probe head 2 is in interference fit with the current probe body 1, so that the close connection of the close-tooth current probe head 2 and the current probe body 1 can be realized, and the close-tooth current probe head 2 is prevented from falling off from the head end of the current probe body 1. The center of the dense-tooth current probe head 2 is provided with a strip-shaped through hole, the through hole is profiled on the head of the voltage probe body 3, and the head of the voltage probe body 3 can conveniently and freely enter and exit the through hole. The head of the voltage needle body 3 is separated from the dense-tooth current probe head 2 by the spacer 6, and the spacer 6 is made of insulating materials, so that the mutual interference between the voltage needle body 3 and the dense-tooth current probe head 2 is prevented, and the use of the probe is prevented from being influenced.

In some embodiments of the present utility model, the current contact teeth 21 have a dense tooth pitch and the square tooth seats are uniformly distributed on the end face of the dense tooth current probe head 2. The gap with uneven contact is automatically corrected through the first spring, thereby the area of the probe and the battery lug is large, the indentation is shallow, the lug cannot be damaged, the contact resistance is small, the transmission effect is better, the mounting seat and the anti-drop nut are fixed on the current needle body, the current needle body is flexible and flexible by utilizing the first spring, the angle of the probe can be automatically corrected within the range of 5 degrees, the probe and the battery lug are ensured to be fully contacted, the locking nut, the wave washer and the lead are assembled on the tail end main body of the current needle body, the locking nut, the wave washer and the lead are used for locking the connecting sheet of the lead, the contact with an electric control part is ensured to be good, and the transmission effect is ensured

In some embodiments of the present utility model, the tail of the current needle body 1 is provided with an external thread 23, the tail of the current needle body 1 is sleeved with a anticreep nut 10, and the internal thread of the anticreep nut 10 is meshed with the external thread 23, so as to prevent the mounting seat 4 from being removed from the current needle body 1.

In some embodiments of the present utility model, a lock nut 16 is further sleeved at the tail of the current needle body 1, the lock nut 16 is fixed on the current needle body 1 through a threaded connection, a connecting piece 121 is disposed at one end of the wire 12, and the connecting piece 121 is sleeved at the tail of the current needle body 1 and is located between the lock nut 16 and the anti-disengagement nut 10. A wave washer 9 is added between the connecting piece 121 and the lock nut 16. The connecting piece of the wire 12 is locked by the locking nut 16 and the wave washer 9, so that the wire is well contacted with an electric control part, and stable transmission is ensured.

In some embodiments of the present utility model, the mounting base 4 includes a base 41 and a connection surface 42, a mounting hole for the current probe body 1 to penetrate is formed in the base 41, a spring cavity 43 is formed on a side of the base 41 facing the dense-tooth current probe head 2, the first spring 13 is sleeved outside the current probe body 1, and two ends of the first spring 13 are respectively connected with an inner wall of the spring cavity 43 and the dense-tooth current probe head 2. When the battery contacts with the probe, the surface of the dense-tooth current probe head 2 may incline, so that the battery tab is not parallel to the dense-tooth current probe head 2, when the battery is tightly pressed with the probe, the first spring 13 is pressed to incline at an angle so as to adjust the surface of the battery to be parallel to the contact surface of the dense-tooth current probe head 2, the first spring 13 and the mounting seat 4 form a telescopic closed loop, the pressing depth is flexibly adjusted, the angle of the probe can be automatically corrected within a range of 5 degrees, and the probe is ensured to be fully contacted with the battery post.

In some embodiments of the present utility model, the base 41 and the connection surface 42 are integrally formed, and the base 41 is a cylinder, and the central axis of the base 41 is perpendicular to the connection surface 42. The connecting surface 42 is symmetrically provided with fixing holes 421 at both ends.

In some embodiments of the present utility model, the insulating sleeve 19 includes a first insulating sleeve 7 and a second insulating sleeve 8, the first insulating sleeve 7 and the second insulating sleeve 8 are disposed in the current needle body 1, the first insulating sleeve 7 is located at a side of the current needle body 1 away from the dense-tooth current probe head 2, the second insulating sleeve 8 is located at a side of the current needle body 1 near the dense-tooth current probe head 2, and the first insulating sleeve 7 and the second insulating sleeve 8 are in interference fit with the current needle body 1, so as to prevent the first insulating sleeve 7 and the second insulating sleeve 8 from moving in the current needle body 1, and simultaneously protect the voltage needle body 3 and the current needle body 1 from mutual interference.

In some embodiments of the present utility model, a flange end cover 5 is installed at the tail end of the current needle body 1, a long waist-shaped hole is provided at the tail end of the voltage needle body 3 exposing the current needle body 1, the length direction of the long waist-shaped hole is consistent with the axis direction of the voltage needle body 3, the complete and free expansion of the voltage needle assembly is ensured, the voltage needle assembly can automatically expand and contract to an optimal position, the total length of the current needle is lower than the total length of the current needle, and the voltage needle and the current needle can be ensured to synchronously contact with a battery tab, thereby realizing synchronous and stable transmission of current and voltage; the voltage pin body 3 is arranged in the first insulating sleeve 7, the second insulating sleeve 8 and the flange end cover 5 in a penetrating way, and an anti-falling pin 15 is arranged in a long-waist-shaped hole of the voltage pin body 3 in a matching way and used for preventing the voltage pin body 3 from falling out of the current pin body 1.

The voltage pin body 3 can be coaxially arranged in the current pin body 1 under the combined action of the first insulating sleeve 7, the second insulating sleeve 8 and the flange end cover 5. The first insulating sleeve 7, the second insulating sleeve 8 and the flange end cover 5 are all made of insulating materials, so that mutual independence between the voltage pin body 3 and the current pin body 1 can be realized, and mutual interference is avoided. The mounting seat 4 is also made of insulating material, so that the influence on the test can be avoided.

In some embodiments of the present utility model, the second spring is disposed between the second insulating sleeve 8 and the voltage needle body 3, one end of the second spring abuts against the step surface in the second insulating sleeve 8, and the other end of the second spring is connected with the spacer sleeve 6, so that the voltage needle body 3 can automatically stretch to an optimal position, and the spring can be insulated from the voltage needle body 3 while having a rebound supporting point.

In some embodiments of the present utility model, the head of the voltage pin body 3 is in a strip shape, and a row of voltage contact teeth 31 are arranged on the end surface of the head of the voltage pin body 3 for contacting the battery tab, and the heights of the voltage contact teeth 31 in the axial direction of the voltage pin body 3 are consistent.

In some embodiments of the present utility model, the bottom of the current contact teeth 21 is square.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (6)

1. The utility model provides a high-accuracy heavy current dense tooth probe, includes electric current needle subassembly (17), voltage needle subassembly (18) and wire (12), and in electric current needle subassembly (17) were worn to locate coaxially to voltage needle subassembly (18), wire (12) were connected in the tail end of electric current needle subassembly (17), its characterized in that:

the current needle assembly (17) comprises a current needle body (1), a dense-tooth current probe head (2), a mounting seat (4) and a first spring (13), wherein the current needle body (1) is in a hollow tubular shape with two through ends, and the dense-tooth current probe head (2) and a tail end connecting wire (12) are arranged at the head end of the current needle body (1); the outer surface of the dense-tooth current probe head (2) contacted with the battery electrode lug is provided with a plurality of current contact teeth (21) used for being contacted with the battery electrode lug, and the center of the dense-tooth current probe head is provided with a through hole for the voltage probe assembly (18) to penetrate; the mounting seat (4) is slidably sleeved outside the current needle body (1); the first spring (13) is sleeved on the current needle body (1) positioned between the mounting seat (4) and the dense-tooth current probe head (2), one end of the first spring (13) is connected with the mounting seat (4), and the other end of the first spring is connected with the dense-tooth current probe head (2);

the voltage needle assembly (18) comprises a voltage needle body (3), an insulating sleeve (19) and a second spring (14), wherein the voltage needle body (3) is slidably arranged in through holes of the current needle body (1) and the dense-tooth current probe head (2) in a penetrating mode, and the insulating sleeve (19) is arranged between the voltage needle body (3) and the current needle body (1); the head of the voltage needle body (3) is sleeved with a spacer bush (6), and the end face of the voltage needle body (3) falling outside the through hole is provided with a voltage contact tooth (31); the second spring (14) is sleeved outside the voltage needle body (3), one end of the second spring (14) is connected with the insulating sleeve (19), and the other end of the second spring is connected with the spacer bush (6) and is used for automatically rebounding after the voltage needle is compressed.

2. A high-precision high-current dense tooth probe according to claim 1, wherein: the tail of the current needle body (1) is provided with an external thread (23), the tail of the current needle body (1) is sleeved with an anti-drop nut (10), and the internal thread of the anti-drop nut (10) is meshed with the external thread (23) for preventing the mounting seat (4) from falling out of the current needle body (1).

3. A high-precision high-current dense tooth probe according to claim 2, wherein: the tail of the current needle body (1) is further sleeved with a lock nut (16), the lock nut (16) is fixed on the current needle body (1) through threaded connection, one end of the wire (12) is provided with a connecting sheet (121), and the connecting sheet (121) is sleeved on the tail of the current needle body (1) and located between the lock nut (16) and the anti-falling nut (10).

4. A high-precision high-current dense tooth probe according to claim 3, wherein: the mounting seat (4) comprises a seat body (41) and a connecting surface (42), a mounting hole for the current probe body (1) to penetrate is formed in the seat body (41), a spring cavity (43) is formed in one side, facing the dense-tooth current probe head (2), of the seat body (41), the first spring (13) is sleeved outside the current probe body (1), and two ends of the first spring (13) are respectively connected with the inner wall of the spring cavity (43) and the dense-tooth current probe head (2).

5. A high-precision high-current dense tooth probe according to claim 4, wherein: the insulation sleeve (19) comprises a first insulation sleeve (7) and a second insulation sleeve (8), the first insulation sleeve (7) and the second insulation sleeve (8) are arranged in the current needle body (1), the first insulation sleeve (7) is located on one side, far away from the dense-tooth current probe head (2), of the current needle body (1), the second insulation sleeve (8) is located on one side, close to the dense-tooth current probe head (2), of the current needle body (1), and the first insulation sleeve (7) and the second insulation sleeve (8) are in interference fit with the current needle body (1).

6. A high-precision high-current dense tooth probe according to claim 5, wherein: a flange end cover (5) is arranged at the tail end of the current needle body (1), a long waist-shaped hole is formed in the tail end of the voltage needle body (3) exposed out of the current needle body (1), and the length direction of the long waist-shaped hole is consistent with the axis direction of the voltage needle body (3); the voltage needle body (3) is arranged in the first insulating sleeve (7), the second insulating sleeve (8) and the flange end cover (5) in a penetrating mode, and an anti-falling pin (15) is assembled in a long-waist-shaped hole of the voltage needle body (3) and used for preventing the voltage needle body (3) from falling out of the current needle body (1).