CN219842457U

CN219842457U - Battery EIS testing arrangement

Info

Publication number: CN219842457U
Application number: CN202320794134.XU
Authority: CN
Inventors: 许杰康; 邵伟; 陈卓; 郑凯; 宋帅帅; 陈利权
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-10-17
Anticipated expiration: 2033-04-10

Abstract

The utility model discloses a battery EIS testing device, comprising: a bottom plate; the movable top plate is adjustably arranged above the bottom plate; the two groups of probe assemblies are arranged on the movable top plate, and each probe assembly comprises a protection module and a needle body penetrating through the protection module; the needle body extends out from one side, close to the bottom plate, of the protection module and is used for being electrically connected to a battery pole; the protection module slides on the movable top plate along the direction vertical to the needle body. The utility model adopts the probe assembly with the protection module, can effectively prevent the damage of the needle body caused by the contact of the battery pole and the needle body during EIS test, thereby avoiding the need of periodically overhauling and replacing the probe assembly.

Description

Battery EIS testing arrangement

Technical Field

The utility model relates to the technical field of battery production and manufacturing, in particular to a battery EIS testing device.

Background

Electrochemical Impedance Spectroscopy (EIS) is an important electrochemical test method with wide applications in the battery field, such as conductivity, apparent chemical diffusion coefficient, growth evolution of SEI, charge transfer and dynamic measurement of mass transfer processes.

At present, a set of battery positioning clamp is needed to fix the position of a lithium battery during detection, and then two probes are respectively abutted to the positive electrode post and the negative electrode post of the battery for testing. However, in the actual operation process, the probes are easily damaged when the positive and negative electrode posts of the battery are abutted against the slender probes, so that the probes are required to be regularly overhauled and replaced, and the testing cost and the testing procedure are increased.

Disclosure of Invention

In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present utility model provides a battery EIS test apparatus, comprising: a bottom plate; the movable top plate is adjustably arranged above the bottom plate; the two groups of probe assemblies are arranged on the movable top plate, and each probe assembly comprises a protection module and a needle body penetrating through the protection module; the needle body extends out from one side, close to the bottom plate, of the protection module and is used for being electrically connected to a battery pole; the protection module slides on the movable top plate along the direction vertical to the needle body.

The utility model adopts the probe assembly with the protection module, can effectively prevent the damage of the needle body caused by the contact of the battery pole post and the needle body during EIS test, thereby avoiding the need of periodically overhauling and replacing the probe assembly.

In some embodiments, the protection module is an aluminum protection module.

The aluminum has high specific strength, light weight, good fluidity and strong mold filling capability, and can protect the needle body and lighten the overall mass of the probe assembly, thereby lightening the overall weight of the battery EIS testing device and facilitating the movement of the battery EIS testing device.

In some embodiments, an insulating layer is provided between the outer surface of the needle body and the inner surface of the protective module.

It is easy to understand that the insulation layer is arranged between the outer surface of the needle body and the inner surface of the protection module, so that the resistance increase caused by the electrification of the protection module and the needle body can be effectively avoided, and the test result is influenced.

In some embodiments, at least one first adjusting groove is formed in the movable top plate in a penetrating manner, and the protection module is slidably mounted in the first adjusting groove.

According to the utility model, the protection module is slidably arranged in the first adjusting groove, namely the probe assembly is slidably connected to the movable top plate, so that the position of the probe assembly can be quickly and conveniently adjusted according to different positions of the battery pole.

In some embodiments, the protection module comprises: an upper sliding part which is in sliding contact with the upper surface of the movable top plate; and the lower sliding part is in sliding contact with the lower surface of the movable top plate, the needle body penetrates through the lower sliding part and the upper sliding part, and the needle body penetrates through the first adjusting groove.

The protection module is divided into an upper sliding part which is in sliding contact with the upper surface of the movable top plate and a lower sliding part which is in sliding contact with the lower surface of the movable top plate, so that the movement of the probe assembly is more stable on the basis of quickly and conveniently adjusting the position of the probe assembly, and damage caused by collision between the probe assembly and a battery due to shaking of the probe assembly is avoided.

In some embodiments, an adjusting screw rod is rotatably installed on the movable top plate, and two groups of protection modules are respectively connected with two ends of the adjusting screw rod in a threaded manner; the adjusting screw rod is used for driving the two probe assemblies to move oppositely or back to back.

It can be understood that the adjusting screw rod is arranged on the movable top plate, and the two probe assemblies can be approaching or separating through rotating the screw rod, so that the positions of the probe assemblies can be adjusted more quickly and conveniently, and the probe assemblies are abutted with the battery pole.

In some embodiments, the two ends of the bottom plate are adjustably provided with a first supporting rod and a second supporting rod, and the two ends of the movable top plate are respectively and movably connected with the first supporting rod and the second supporting rod; the bottom plate, the movable top plate, the first support rod and the second support rod form a frame for clamping the battery.

It will be appreciated that the first support bar and the second support bar are adjustable relative to the base plate, and the movable top plate is adjustable relative to the base plate via the first support bar and the second support bar, so that the utility model can be adapted to batteries of different sizes and models.

In some embodiments, two second adjusting grooves parallel to each other are arranged at two ends of the bottom plate; the first support bar 41 and the second support bar 42 are slidably mounted in one-to-one correspondence with the second adjustment grooves 21.

In some embodiments, the battery EIS test apparatus further comprises: the two supporting pieces are respectively arranged on the first supporting rod and the second supporting rod, and the supporting pieces are positioned between the movable top plate and the bottom plate; the fastener, two fasteners are located first bracing piece and second bracing piece respectively, and movable roof is located between fastener and the support piece.

Specifically, the movable top plate can move along the first support rod and the second support rod to adapt to batteries with different heights, and after the height is determined, the movable top plate is supported by the support piece and then the bolts are screwed, so that the movable top plate is fixed.

In some embodiments, the supporting member is an elastic member sleeved on the first supporting rod and the second supporting rod respectively.

Specifically, the elastic component is pressed between the movable top plate and the bottom plate, when the movable top plate is moved downwards, the elastic component provides support for the movable top plate, the movable top plate is fixed by adjusting the bolt again, and when the bolt is screwed, the movable top plate is reset under the driving of the elastic component, and manual reset is not needed.

In summary, the battery EIS test device provided by the utility model has the following technical effects:

(1) The utility model adopts the probe assembly with the protection module, can effectively prevent the damage of the needle body caused by the contact of the battery pole and the needle body during EIS test, thereby avoiding the need of periodically overhauling and replacing the probe assembly.

(2) According to the utility model, the protection module is slidably arranged in the first adjusting groove, namely the probe assembly is slidably connected to the movable top plate, so that the position of the probe assembly can be quickly and conveniently adjusted according to different positions of the battery pole.

(3) The protection module is divided into an upper sliding part which is in sliding contact with the upper surface of the movable top plate and a lower sliding part which is in sliding contact with the lower surface of the movable top plate, so that the movement of the probe assembly is more stable on the basis of quickly and conveniently adjusting the position of the probe assembly, and damage caused by collision between the probe assembly and a battery due to shaking of the probe assembly is avoided.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic structural view of the probe assembly.

Wherein the reference numerals have the following meanings:

1. a battery EIS testing device;

2. a bottom plate; 21. a second regulating groove;

3. a movable top plate; 31. a first adjustment tank;

41. a first support bar; 42. a second support bar;

5. a probe assembly; 51. a protection module; 511. an upper sliding part; 512. a lower sliding part; 52. a needle body;

6. a support;

7. a fastener.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 and 2, a battery EIS test apparatus 1 includes: a base plate 2; the movable top plate 3 is adjustably arranged above the bottom plate 2; the probe assemblies 5, two groups of the probe assemblies 5 are arranged on the movable top plate 3, and the probe assemblies 5 comprise a protection module 51 and a needle body 52 penetrating through the protection module 51; the needle 52 protrudes from the side of the protection module 51 near the bottom plate 2, and the needle 52 is used for being electrically connected to a battery pole; the protection module 51 slides on the movable top plate 3 in a direction perpendicular to the needle 52.

One end of the needle 52 is electrically connected to the battery post, and the other end of the needle 52 is electrically connected to the electrochemical workstation via a lead wire.

The probe assembly 5 with the protection module 51 can effectively prevent the needle 52 from being broken and damaged due to the abutting connection of the battery pole and the needle 52 during EIS test, so that the probe assembly 5 does not need to be regularly overhauled and replaced, and the probe assembly 5 is good in stability, durable and suitable for industrial application and popularization.

Referring to fig. 3, the protection module 51 is an aluminum protection module 51.

Preferably, in this embodiment, the protection module 51 is made of an aluminum material, and in other embodiments, the material of the protection module 51 is selected differently according to actual requirements.

It should be noted that, aluminum has high specific strength, light weight, good fluidity, and strong mold filling capability, and not only can protect the needle 52, but also can reduce the overall weight of the probe assembly 5, thereby reducing the overall weight of the battery EIS test device 1, and facilitating the movement of the battery EIS test device 1.

An insulating layer is provided between the outer surface of the needle body 52 and the inner surface of the protection module 51.

It is easy to understand that the insulating layer is arranged between the outer surface of the needle body 52 and the inner surface of the protection module 51, so that the situation that the resistance is increased and the test result is affected due to the fact that the protection module 51 and the needle body 52 are electrified can be effectively avoided.

Referring to fig. 1 and 2, at least one first adjusting slot 31 is formed in the movable top plate 3, and the protection module 51 is slidably mounted in the first adjusting slot 31.

The existing probe is fixed in the waist-shaped hole through a bolt, and the bolt is required to be unscrewed firstly when the position of the probe is adjusted, then the approximate position of the probe is determined, and then the bolt is screwed to fix the probe, so that the operation is inconvenient.

According to the utility model, the protection module 51 is slidably arranged in the first adjusting groove 31, namely the probe assembly 5 is slidably connected to the movable top plate 3, so that the position of the probe assembly 5 can be quickly and conveniently adjusted according to different positions of battery poles.

Referring to fig. 1 and 3, the protection module 51 includes: an upper sliding portion 511 slidably abutting against the upper surface of the movable top plate 3; a lower sliding portion 512 slidably abutting against the lower surface of the movable top plate 3, the needle body 52 penetrating the lower sliding portion 512 and the upper sliding portion 511, the needle body 52 penetrating the first adjustment groove 31.

When the existing probe moves in the waist-shaped hole, the phenomenon of shaking exists, and the phenomenon that the contact between the probe and a battery pole is unstable is easily caused.

The protection module 51 of the present utility model is divided into an upper sliding part 511 slidably abutting on the upper surface of the movable top plate 3 and a lower sliding part 512 slidably abutting on the lower surface of the movable top plate 3, so that the movement of the probe assembly 5 can be more stable on the basis of rapidly and conveniently adjusting the position of the probe assembly 5, and damage caused by collision between the probe assembly 5 and a battery due to shaking of the probe assembly is avoided.

An adjusting screw rod is rotatably arranged on the movable top plate 3, and two groups of protection modules 51 are respectively connected with two ends of the adjusting screw rod in a threaded manner; the adjusting screw rod is used for driving the two probe assemblies 5 to move in opposite directions or back to back.

Preferably, an adjusting screw is mounted on the movable top plate 3, and the two probe assemblies 5 can be approaching or separating by rotating the screw, so that the positions of the probe assemblies 5 can be adjusted more quickly and conveniently, and the probe assemblies 5 are abutted with the battery poles.

Referring to fig. 1, a first support bar 41 and a second support bar 42 are adjustably provided at both ends of a bottom plate 2, and both ends of a movable top plate 3 are movably connected with the first support bar 41 and the second support bar 42, respectively; the bottom plate 2, the movable top plate 3, the first support bar 41, and the second support bar 42 form a frame for holding the battery.

It should be noted that, the battery is placed on the bottom plate 2, and the battery post is disposed towards the movable top plate 3, the first support bar 41 and the second support bar 42 are located at two ends of the movable top plate 3, two sides of the battery parallel to the connecting line direction of the first support bar 41 and the second support bar 42 are defined as battery width surfaces, two sides of the battery parallel to the first support bar 41 are battery height surfaces, and two sides of the battery parallel to the movable top plate 3 are battery width surfaces.

It will be appreciated that the first support bar 41 and the second support bar 42 are adjustable with respect to the base plate 2, and the movable top plate 3 can be adjusted with respect to the base plate 2 by the first support bar 41 and the second support bar 42, so that the positions of the first support bar 41 and the second support bar 42 in the second adjustment groove 21 can be adjusted to adapt to batteries with different thickness surfaces, the positions of the probe modules in the first adjustment groove 31 can be adjusted to adapt to batteries with different width surfaces, and the positions of the movable top plate 3 on the first support bar 41 and the second support bar 42 can be adjusted to adapt to batteries with different height surfaces. Therefore, the present utility model can be adapted to batteries of different sizes and models.

Referring to fig. 1 and 2, two second adjusting grooves 21 parallel to each other are provided at both ends of the bottom plate 2; the first support bar 41 and the second support bar 42 are slidably mounted in one-to-one correspondence with the second adjustment grooves 21.

Specifically, the first support bar 41 and the second support bar 42 can slide along the second adjustment groove 21 so as to be movable in the thickness direction of the battery to accommodate batteries of different thickness planes.

Referring to fig. 1, the battery EIS test apparatus 1 further includes: the supporting pieces 6, the two supporting pieces 6 are respectively arranged on the first supporting rod 41 and the second supporting rod 42, and the supporting pieces 6 are positioned between the movable top plate 3 and the bottom plate 2; the fastening pieces 7, the two fastening pieces 7 are respectively arranged on the first supporting rod 41 and the second supporting rod 42, and the movable top plate 3 is arranged between the fastening pieces 7 and the supporting piece 6.

It should be noted that, in the present embodiment, the fastening member 7 is a bolt sleeved on the first support rod 41 and the second support rod 42, and the outer surfaces of the first support rod 41 and the second support rod 42 are provided with threads, and in other embodiments, the fastening member 7 has a different arrangement.

Specifically, the movable top plate 3 can move along the first support rod 41 and the second support rod 42 to adapt to batteries with different height surfaces, and after the height is determined, the movable top plate 3 is supported by the support member 6, and then the bolts are screwed, so that the movable top plate 3 is fixed.

Referring to fig. 1, the supporting member 6 is an elastic member respectively sleeved on the first supporting rod 41 and the second supporting rod 42.

Specifically, the elastic member is pressed between the movable top plate 3 and the bottom plate 2, when the movable top plate 3 is moved downwards, the elastic member provides support for the movable top plate 3, the movable top plate 3 is fixed by adjusting the bolt, and when the bolt is screwed, the movable top plate 3 is reset under the driving of the elastic member without manual reset.

The probe assembly 5 with the protection module 51 is adopted in the utility model, and the damage to the needle 52 caused by the contact of the battery pole and the needle 52 can be effectively prevented during EIS test, so that the probe assembly 5 does not need to be regularly overhauled and replaced, and the probe assembly 5 has good stability, is durable and is suitable for industrial application and popularization.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A battery EIS test apparatus, comprising:

a bottom plate (2);

the movable top plate (3) is adjustably arranged above the bottom plate (2);

the probe assemblies (5) are arranged on the movable top plate (3), and the probe assemblies (5) comprise a protection module (51) and a needle body (52) penetrating through the protection module (51);

the needle body (52) extends out from one side of the protection module (51) close to the bottom plate (2), and the needle body (52) is used for being electrically connected to a battery pole;

the protection module (51) slides on the movable top plate (3) along the direction perpendicular to the needle body (52).

2. The battery EIS test apparatus of claim 1, wherein the protection module (51) is an aluminum protection module (51).

3. The battery EIS test apparatus of claim 1, wherein an insulating layer is provided between the outer surface of the needle body (52) and the inner surface of the protection module (51).

4. A battery EIS test apparatus according to any one of claims 1-3, characterized in that at least one first adjustment slot (31) is provided through the movable top plate (3), and the protection module (51) is slidably mounted in the first adjustment slot (31).

5. The battery EIS test apparatus of claim 4, wherein the protection module (51) includes:

an upper sliding part (511) which is in sliding contact with the upper surface of the movable top plate (3);

and a lower sliding part (512) which is in sliding contact with the lower surface of the movable top plate (3), wherein the needle body (52) penetrates through the lower sliding part (512) and the upper sliding part (511), and the needle body (52) penetrates through the first adjusting groove (31).

6. The battery EIS testing device according to claim 4, wherein an adjusting screw rod is rotatably mounted on the movable top plate (3), and two groups of the protection modules (51) are respectively connected with two ends of the adjusting screw rod in a threaded manner;

the adjusting screw rod is used for driving the two probe assemblies (5) to move in opposite directions or back to back.

7. The battery EIS test apparatus of claim 4, wherein a first support bar (41) and a second support bar (42) are adjustably provided at both ends of the bottom plate (2), and both ends of the movable top plate (3) are movably connected to the first support bar (41) and the second support bar (42), respectively;

the bottom plate (2), the movable top plate (3), the first support rod (41) and the second support rod (42) form a frame for clamping a battery.

8. The battery EIS test apparatus of claim 7, wherein two second adjusting grooves (21) parallel to each other are provided at both ends of the bottom plate (2);

the first supporting rod (41) and the second supporting rod (42) are in one-to-one corresponding sliding installation with the second adjusting groove (21).

9. The battery EIS test apparatus of claim 7, further comprising:

the two supporting pieces (6) are respectively arranged on the first supporting rod (41) and the second supporting rod (42), and the supporting pieces (6) are positioned between the movable top plate (3) and the bottom plate (2);

the fastening pieces (7), the two fastening pieces (7) are respectively arranged on the first supporting rod (41) and the second supporting rod (42), and the movable top plate (3) is arranged between the fastening pieces (7) and the supporting piece (6).

10. The battery EIS test apparatus of claim 9, wherein the support member (6) is an elastic member respectively sleeved on the first support bar (41) and the second support bar (42).