CN220455425U

CN220455425U - Sheet resistance measuring device

Info

Publication number: CN220455425U
Application number: CN202320556078.6U
Authority: CN
Inventors: 曹金秀; 李京浩; 罗田; 李思鹏; 江小松; 张谨奕
Original assignee: Beijing Herui Energy Storage Technology Co ltd
Current assignee: Beijing Herui Energy Storage Technology Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2024-02-06
Anticipated expiration: 2033-03-20

Abstract

The utility model discloses a sheet resistance measuring device, which belongs to the technical field of resistance measurement, and comprises a frame part, two measuring mechanisms, a detection section and a control unit, wherein the two measuring mechanisms are respectively arranged on two arm parts, the detection section is correspondingly formed between the two measuring mechanisms, each measuring mechanism comprises a mounting seat body fixed on the arm part and a probe arranged on the mounting seat body, the axes of the probes in the two measuring mechanisms are overlapped, and at least one probe is configured to linearly move along the detection direction. Accurate measurement of sheet resistance can be achieved by setting the movement of the probe in the measuring mechanism.

Description

Sheet resistance measuring device

Technical Field

The utility model belongs to the technical field of resistance measurement, and particularly relates to a sheet resistance measurement device.

Background

The preparation method requires the composite sheet to have higher conductivity, ensures the composite material to have lower resistance and improves the efficiency of the battery; wherein the detection method often involves resistance measurement of the composite sheet; for thin plate materials or thin plate composite materials, to measure the resistivity or the quality of the composite position, resistance pens are often used for placing leads at two ends of the thin plate, or pen points of the resistance pens are placed at two ends of the thin plate, so as to measure the penetration resistance.

The operation mode has larger error due to manual operation mode, and is mainly expressed as follows: the pen points of the two meter pens cannot be aligned, and the meter pens are not completely parallel, so that the error of a measurement result is large; meanwhile, the measurement size is limited, and the sample needs to be cut; the size and weight of the composite sheet are greatly affected by different battery types, and the whole area of the large-size composite sheet cannot be detected in a traditional manner.

Disclosure of Invention

The utility model aims to provide a sheet resistance measuring device, which is used for solving the problem of the prior art in the measuring process.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a sheet resistance measuring device includes a frame member having two arm portions arranged at a distance from each other;

the two measuring mechanisms are respectively arranged on the two arm parts, a detection interval is formed between the two measuring mechanisms correspondingly, each measuring mechanism comprises an installation base body fixed on the arm part and a probe arranged on the installation base body, the axes of the probes in the two measuring mechanisms coincide, and at least one probe is configured to be capable of linearly moving along the detection direction.

Preferably, the linear movement of the probe is achieved by a telescopic mechanism disposed within the mount.

Preferably, the telescopic mechanism includes:

the boss is internally provided with a through hole with an axis coincident with the axis of the probe, the probe is arranged at the position of the through hole at the first end of the boss, and the contact end of the probe extends out of the first end;

a housing member having a cavity formed therein, the boss member first end being linearly movable within a partial section of the cavity.

Preferably, the first end of the boss extends outwards to form a flange part, the cavity comprises a first section for sliding of the flange part, and a gap interval is formed between the outer wall of the boss and the surface of the first section.

Preferably, the telescopic device further comprises an elastic component sleeved outside the boss and located in the gap section, and the elastic component is configured to be compressed when the boss moves along a direction away from the detection section.

Preferably, the elastic member is a spring.

Preferably, the cavity further comprises a second section, and the surface of the second section is configured to protrude toward the axial direction of the boss so as to limit the linear movement of the boss.

Preferably, the telescopic device further comprises a first mounting ring and a second mounting ring, and the probe is mounted at the position of the through hole at the first end of the boss through the first mounting ring and the second mounting ring.

Preferably, the probes in both of the measuring mechanisms are configured to be linearly movable in the detection direction.

Preferably, the two arm portions extend along the first direction, and the extending ends of the two arm portions are connected through the supporting portion.

Preferably, the two arm parts are composed of a plurality of sleeved bobbins, and the length of the arm part is changed through the telescopic action of the bobbins.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device of the application is capable of handheld portability measurements.

2. The device in this application can measure the compound sheet resistance that the size width is big.

3. The device in the application can carry out nondestructive testing on the composite sheet.

4. The device of this application can carry out constant voltage detection to the composite sheet, avoids manual operation error, ensures measuring accuracy.

Drawings

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

FIG. 2 is a first cross-sectional view of the present utility model;

FIG. 3 is a second cross-sectional view of the present utility model;

FIG. 4 is a schematic diagram of a measuring mechanism according to the present utility model;

FIG. 5 is a schematic view of a multi-section bobbin according to the present utility model.

In the figure: 1. a measuring device; 100. a frame member; 100a, arm portion; 100b, a supporting part; 200. a measuring mechanism; 201. a probe; 201a, contact ends; 202. a detection section; 203. fixing the probe; 204. a movable probe; 205. a first probe; 206. a second probe; 207. a mounting base body; 300. a telescoping mechanism; 301. a housing member; 302. a cavity; 302a, a first section; 302b, a second section; 303. a boss member; 303a, a flange portion; 304. a through hole; 305. a void section; 306. a spring; 307. a first mounting ring; 308. and a second mounting ring.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

A sheet resistance measuring device 1 (hereinafter referred to as measuring device 1) for measuring sheet-like parts resistance, contact resistance or threading resistance, wherein the sheet-like parts refer to metal plates or metal composite plate-like parts (hereinafter also referred to as plates to be detected).

Fig. 1 schematically shows the overall structure of a measuring device 1, and referring to fig. 1, the measuring device 1 main body is composed of a frame member 100 and a measuring assembly, wherein the measuring assembly is composed of two measuring mechanisms 200 arranged oppositely, correspondingly, the frame member 100 is provided with two arm portions 100a arranged at intervals, the two measuring mechanisms 200 respectively take the two arm portions 100a as mounting carriers to realize the mounting and fixing of the two measuring mechanisms 200, and a detecting section 202 is correspondingly formed between the two measuring mechanisms 200, and when in use, a thin plate part at least partially enters the detecting section 202, and the measuring of the resistance of the thin plate part is realized through the cooperation of the two measuring mechanisms 200;

returning to fig. 1, in conjunction with fig. 2, the two arm portions 100a of the frame member 100 extend in a single direction (denoted as Y-axis direction in the drawing), while the extending direction of the arm portions 100a coincides with the inserting direction of the sheet-like parts, and the following unification is denoted by a first direction (denoted by arrow F in fig. 1), continuing to describe the frame member 100, the frame member 100 further has a supporting portion 100b, and correspondingly, the arm portions 100a of the frame member 100 have a fixed end and an extending end, the extending ends of the two arm portions 100a are connected by the supporting portion 100b to form a complete frame member 100, and in some embodiments of the measuring apparatus 1, the measuring mechanism 200 is mounted on a section of the arm portion 100a near the fixed end, and in preferred embodiments of the measuring mechanism 200, the measuring mechanism 200 is mounted directly on the fixed end of the arm portion 100 a;

in some embodiments of the measuring device 1, the arm is formed by a plurality of sleeved bobbins, and the length of the arm is adjusted by the telescopic of the bobbins, so as to be suitable for measuring the resistances of the boards to be detected with different specifications.

In some embodiments of the measuring device 1, the arm 100a is formed as a rectangular parallelepiped extending along the first direction, that is, the cross section of the arm 100a is rectangular, and the shape of the arm 100a may be a circular shape or a polygonal shape, which is not limited herein, preferably, a hollow portion is formed on the cross section of the arm 100a, that is, a part of the cross section of the arm 100a is configured to contact with the measuring mechanism 200 to fix the measuring mechanism 200.

Referring to fig. 2, which is a cross-sectional view of an embodiment of the measuring apparatus 1, the measuring mechanism 200 is further described with reference to the drawing, and each of the two measuring mechanisms 200 includes a mounting base 207 and probes 201 disposed in the mounting base 207, wherein the mounting base 207 is fixedly mounted on the arm 100a, and each of the two probes 201 is connected to an outside resistance meter device by an electric wire, and the two probes 201 are configured to be disposed along a measuring direction (i.e., a Z-axis direction in fig. 1) and the axes of the two probes 201 are coincident, the measuring direction is configured such that, when the resistance of the sheet-like part is measured, the axes of the probes 201 are perpendicular to a plane of the sheet-like part, and in fig. 1, the sheet-like part enters the detecting section 202 in a direction parallel to the XOY plane to achieve measurement of the resistance, and correspondingly, the axes of the probes 201 are disposed along the Z-axis;

returning to fig. 2, continuing to describe the measuring mechanism 200, at least one of the two probes 201 is configured to be capable of moving linearly along the measuring direction, so that after the board to be detected enters the detecting section 202, the position of the probe 201 can be adjusted to be in contact with the end face of the board to be detected, and the resistance measurement is achieved in cooperation with the other probe 201, when one of the two probes 201 is fixed (hereinafter referred to as a fixed probe 203) and the other probe is capable of moving linearly along the measuring direction (hereinafter referred to as a movable probe 204), at this time, when the resistance of the board to be detected is measured, reference is made to 1, at this time, the two measuring mechanisms 200 are arranged at a distance in the vertical direction, that is, the board to be detected enters the detecting section 202 in a direction parallel to the horizontal plane, before the board to be detected enters the detecting section 202, a distance is provided between the contact ends 201a of the movable probe 204 and the fixed probe 203 (that is, the end near the other probe) so that the board to be detected can enter the detecting section 202, after the board to be inspected enters the inspection area 202, the contact end 201a of the fixed probe 203 contacts with one end surface of the board to be inspected, and the movable probe 204 moves toward the inspection area 202 to make the contact end 201a of the movable probe 204 contact with the other end surface of the board to be inspected, the fixed probe 203 and the movable probe 204 cooperate to complete the measurement of the resistance of the board to be inspected, when both probes 201 are configured to be linearly movable in the inspection direction, referring to fig. 3, for convenience of description, both the movable probes are denoted as a first probe 205 and a second probe 206, respectively, at this time, when the resistance of the board to be inspected is measured, both the measuring mechanisms 200 may be disposed at intervals in the horizontal direction, i.e. the board to be inspected enters the inspection area 202 in a direction perpendicular to the horizontal plane and along the first direction, at this time before the board to be inspected enters the inspection area, after the board to be detected enters the detection zone 202, the first probe 205 and the second probe 206 move to one side of the detection zone 202, so that the contact ends 201a of the first probe 205 and the second probe 206 are respectively contacted with two end surfaces of the board to be detected to finish the measurement of the resistance of the board to be detected;

continuing to describe the measuring mechanism 200 with reference to fig. 2 and 4, at least one of the two measuring mechanisms 200 is provided with a telescopic mechanism 300 to drive the probe 201 to move linearly in the measuring direction, when the two probes 201 are configured to be movable, correspondingly, the two measuring mechanisms 200 are provided with telescopic mechanisms 300, and the two telescopic structures have the same composition, and now one measuring mechanism 200 is selected to describe the composition of the telescopic mechanism 300, referring to fig. 4, the telescopic mechanism 300 includes a housing member 301 and a boss member 303, wherein the axis of the boss member 303 coincides with the axis of the probe 201, and the boss member 303 is formed with a through hole 304 along the axis thereof, the probe 201 is mounted on a first end of the through hole 304 of the boss member 303 through a mounting ring 307 and a mounting ring two 308, namely, the boss member 303 and the probe 201 form a moving whole, and a contact end 201a of the probe 201 extends to the outside of the first end of the through hole 304 of the boss member 303, and a wire connected to the probe 201 passes through a second end of the through hole 304 of the boss member 303 and is connected to an external resistance meter;

returning to fig. 4, continuing to describe the telescopic assembly, a cavity 302 is formed in the housing member 301, and the cavity 302 is configured to allow the first end of the boss member 303 to slide in the cavity 302, referring to fig. 4, a part of the section of the first end of the boss member 303 extends outwards to form a flange portion 303a, correspondingly, the cavity 302 has a first section 302a and a second section 302b, where the surface of the first section 302a is configured to be slidingly connected with the outer surface of the flange portion 303a, so that the boss member 303 can slide in the first section 302a, the inner surface of the second section 302b is configured to bulge in the axial direction of the boss member 303, so as to limit the linear movement of the boss member 303, and, for example, the first section 302a may be formed in the middle of the cavity 302, and the second section 302b may be formed on both sides of the first section 302a, so as to limit the movement of the boss member 303, while the first section 302a may be formed only on the outer side (i.e. the side far from the detecting section 202) of the second section 302b, and the upper end of the detecting section 303 b is far away from the lower end of the housing member (so as to realize the limit movement of the boss member 301);

referring back to fig. 4, as can be seen from the foregoing description, a gap section 305 is formed between the outer surface of the boss 303 and the surface of the first section 302a of the cavity 302, the telescopic mechanism 300 includes an elastic member sleeved outside the boss 303 and located in the gap section 305, and the elastic member is illustratively a spring 306, where the spring 306 is configured to be compressed when the boss 303 moves linearly outwards (i.e. away from one side of the detection section 202) along the detection direction, so that when the measuring device 1 is used, before the plate to be detected enters the detection section 202, the boss 303 moves outwards by applying an external force to the boss 303 and makes the spring 306 be in a compressed state, after the plate to be detected enters the detection section 202, the boss 303 moves inwards under the restoring force of the spring 306 and contacts with the large end surface of the plate to be detected, and when both probes 201 are configured to be movable, after the plate to be detected enters the detection section 202, both probes move inwards under the restoring force of the spring 306 and respectively contact with the two end surfaces of the plate to be detected, thus the two end surfaces to be detected can not meet the same practical requirement of the spring 306, and the practical requirement of the measuring device can be further improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sheet resistance measuring device, characterized in that: comprising the following steps:

a frame member having two arm portions arranged at a distance from each other;

2. A sheet resistance measuring apparatus as defined in claim 1 wherein: the linear movement of the probe is achieved by a telescopic mechanism arranged in the mounting seat.

3. A sheet resistance measuring apparatus as defined in claim 2 wherein: the telescopic mechanism comprises:

4. A sheet resistance measuring apparatus according to claim 3, wherein: the boss first end extends outwards to form a flange part, the cavity comprises a first section for sliding of the flange part, and a gap interval is formed between the boss outer wall and the surface of the first section.

5. The sheet resistance measuring apparatus as defined in claim 4 wherein: the telescopic mechanism further comprises an elastic component sleeved outside the boss piece and located in the gap interval, and the elastic component is configured to be compressed when the boss piece moves along the direction away from the detection interval.

6. A sheet resistance measuring apparatus as defined in claim 5 wherein: the elastic member is a spring.

7. The sheet resistance measuring apparatus as defined in claim 6 wherein: the cavity further comprises a second section, and the surface of the second section protrudes towards the axis direction of the boss so as to limit the linear movement of the boss.

8. A sheet resistance measuring apparatus according to claim 3 or 7, wherein: the telescopic mechanism further comprises a first mounting ring and a second mounting ring, and the probe is mounted at the position of the through hole at the first end of the boss through the first mounting ring and the second mounting ring.

9. A sheet resistance measuring apparatus as defined in claim 1 wherein: the probes in both measuring mechanisms are configured to be linearly movable along the detection direction.

10. A sheet resistance measuring apparatus as defined in claim 1 wherein: the two arm parts extend along the first direction, and the extending ends of the two arm parts are connected through the supporting part.

11. A sheet resistance measuring apparatus as defined in claim 10 wherein: the two arm parts are composed of a plurality of sleeved bobbins, and the length of the arm part is changed through the telescopic action of the bobbins.