CN222134773U

CN222134773U - Clamping device for battery detection

Info

Publication number: CN222134773U
Application number: CN202420893469.1U
Authority: CN
Inventors: 顾超; 孟远征; 张楠
Original assignee: Carl Zeiss Industrielle Messtechnik GmbH
Current assignee: Carl Zeiss Industrielle Messtechnik GmbH
Priority date: 2024-04-26
Filing date: 2024-04-26
Publication date: 2024-12-10
Anticipated expiration: 2034-04-26

Abstract

The utility model relates to a clamping device for battery detection, the clamping device includes a tray assembly for carrying batteries and a clamping assembly for releasably clamping the batteries, the clamping assembly includes a fixed part and a movable part, the movable part can be actuated to move in a direction toward or away from the fixed part, the tray assembly includes an X-ray transparent tray, the tray includes a bearing portion, the bearing portion is designed to allow the battery to be placed on the bearing portion in at least a first orientation and a second orientation, wherein the second orientation is rotated 90° relative to the first orientation. The clamping device of the utility model, especially the X-ray transparent tray made of carbon fiber material, is not only compatible with batteries of different sizes and different orientations/positioning directions, improving on-site flexibility and production efficiency, but also has less X-ray attenuation, improving imaging quality and detection accuracy.

Description

Clamping device for battery detection

Technical Field

The utility model relates to the technical field of battery detection, in particular to a clamping device for battery detection.

Background

Along with the continuous popularization of new energy automobiles, battery technology is also rapidly developed, and lithium ion batteries are widely researched and applied in the field of new energy automobiles due to the advantages of high working voltage, light weight, high energy density and the like. Because the safety performance of lithium ion batteries is very high, the precision, stability and automation level of lithium battery equipment are very high in the battery manufacturing process. Meanwhile, how to judge the quality and the safety and the reliability of the manufactured battery is an important link of battery detection. The production process flow of the lithium battery is longer, and the manufacturing flow of the lithium battery can be divided into a front-stage process (pole piece manufacturing), a middle-stage process (battery cell synthesis) and a back-stage process (formation packaging) as a whole. The X-ray nondestructive test is generally applied in the post-stage process of lithium battery production, and is mainly used for detecting whether the internal structure of the packaged lithium battery accords with the production process, such as the alignment degree of lamination or winding, the cladding condition of the internal structure of the tab and the positive and negative pole pieces, and the condition of the negative pole and the shell wall (such as the spacing, the touch distance, the bending state of the tab, etc.) in the battery. And detecting the image to intuitively find the internal defects of the packaged lithium battery so as to control the product quality. The X-ray detection equipment can be connected with a lithium battery production line in a butt joint manner, 100% detection of lithium batteries is achieved, automatic judgment, data storage, defective product identification, screening and isolation are achieved, and therefore automatic control of the whole battery detection process is achieved.

The packaging of lithium ion batteries is divided into two major categories, one being a soft pack battery and the other being a metal-case battery. The metal shell battery has the advantages of large single battery capacity, large assembly, simple process of the capacity battery, sustainable large-current discharge, greatly improved internal protection of the battery core, customization according to the requirements of customers and the like, and can be widely applied to the field of new energy automobiles.

However, the complex process of metal-case batteries and their variable size also present a number of inconveniences to the X-ray nondestructive testing process. Because the metal-case battery is a battery with high customization degree and the requirements of each customer are different, the sizes, the tab lengths and the tab positions of the square-case batteries may be greatly different, so that the existing clamp in the prior art is difficult to meet the requirements of detection of different square-case batteries, and thus the universality is lacking. Meanwhile, the metal shell battery has a complex image in X-rays due to a complex process, and the existing fixture device is difficult to meet the image quality and detection precision.

Accordingly, there is a need for an improved clamping device for battery detection that addresses at least one of the above-identified problems and/or other problems of the prior art.

Disclosure of utility model

To achieve the above object, the present utility model provides a clamping device for battery detection, comprising a tray assembly for carrying a battery and a clamping assembly for releasably clamping a battery, wherein the clamping assembly comprises a fixed part and a movable part, the movable part being actuatable to move in a direction towards or away from the fixed part, wherein the tray assembly comprises an X-ray transparent tray comprising a carrier designed to allow the battery to be placed on the carrier in at least a first orientation and a second orientation, wherein the second orientation is rotated 90 ° with respect to the first orientation.

As an embodiment of the present utility model, the tray is made of a carbon fiber material.

As an embodiment of the utility model, the carrier part is cross-shaped with four radially extending portions.

As an embodiment of the present utility model, the tray assembly further includes a moving frame, the tray further includes two mounting pieces extending at an angle from two opposite radially extending portions of the four radially extending portions, respectively, and the tray is fixed to the moving frame via the two mounting pieces.

As an embodiment of the present utility model, the moving frame has a quadrilateral shape.

As an embodiment of the utility model, the stationary part of the clamping assembly comprises a mounting seat and a first jaw, and the movable part of the clamping assembly comprises an adjustment mechanism and a second jaw which can be actuated to move in a direction towards or away from the first jaw.

As an embodiment of the present utility model, the clamping assembly further comprises a moving base, the mount and the adjustment mechanism being fixed to the moving base.

As an embodiment of the present utility model, the first and second clamping jaws are detachably connected to the mounting base and the adjusting mechanism, respectively.

As an embodiment of the present utility model, the adjusting mechanism includes a push rod, an adjusting assembly, a bearing, and an elastic member, wherein the push rod includes an adjusting inclined surface; the bearing moves along the adjusting inclined plane along a first direction to enable the adjusting component to compress the elastic piece and drive the second clamping jaw to move away from the first clamping jaw when the push rod moves from the initial position under the action of external force, and the bearing moves along the adjusting inclined plane along a second direction opposite to the first direction when the push rod returns to the initial position under the action of no external force, and the elastic piece provides a restoring force to enable the adjusting component to drive the second clamping jaw to move towards the first clamping jaw.

As an embodiment of the present utility model, the first jaw and the second jaw are made of a rubber material.

Compared with the prior art, the clamping device for battery detection can at least achieve one of the following technical effects that the tray is made of materials which can penetrate through X rays, such as carbon fibers, so that the imaging stability, imaging quality and detection accuracy are improved, and because the tray is cross-shaped, compatibility of batteries with different sizes and different positioning directions/orientations of the batteries is ensured, the field flexibility is improved, time for changing the shape of the tray due to battery changing is saved, and the production efficiency is greatly improved.

Drawings

The features and advantages of the present utility model will be apparent from the detailed description provided hereinafter with reference to the accompanying drawings. It is to be understood that the following drawings are merely schematic and are not necessarily drawn to scale, and are not to be construed as limiting the utility model, in which:

Fig. 1 shows a perspective view of a clamping device for battery testing according to an embodiment of the utility model, wherein a battery is carried by and clamped by a tray assembly in a first orientation;

fig. 2 shows a perspective view of the clamping device of fig. 1 (without a battery placed thereon);

FIG. 3 illustrates a perspective view of a tray included in a tray assembly according to an embodiment of the present utility model;

Fig. 4 shows, in perspective view, a battery of different dimensional specifications carried by a tray assembly and clamped by a clamping assembly arranged in a second orientation different from the first orientation;

Fig. 5a shows a side view of the clamping device of fig. 1 with the battery in an unclamped state, fig. 5b shows a side view of the clamping device of fig. 1 with the battery in a clamped state, and

Fig. 6 partially shows a perspective view of a movable part included in the clamping assembly;

Detailed Description

Embodiments of the present utility model are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding and enabling description of the utility model to one skilled in the art. It will be apparent, however, to one skilled in the art that the present utility model may be practiced without some of these specific details. Furthermore, it should be understood that the utility model is not limited to specific described embodiments. Rather, any combination of the features and elements described below is contemplated to implement the utility model, whether or not they relate to different embodiments. Thus, the following aspects, features, embodiments and advantages are merely illustrative and should not be considered elements or limitations of the claims except where explicitly set out in a claim.

Terms such as "first," "second," and the like are used hereinafter to describe elements of the present application, and are merely used for distinguishing between the elements and not for limiting the nature, order, or number of such elements. The terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components other than the listed elements/components.

Fig. 1 shows a perspective view of a clamping device 1 for battery detection according to an embodiment of the utility model, wherein a battery 2 is carried and clamped in a first orientation by said clamping device 1. The clamping device 1 comprises a tray assembly 10 for carrying the batteries 2 and a clamping assembly 20 for releasably clamping the batteries 2 (i.e. the batteries can be clamped or unclamped). The tray assembly 10 and the clamping assembly 20 may be partially secured to a conveyor mechanism (such as a belt drive, a chain drive, a magnetic levitation drive, or other drive schemes known in the art) so that the entire clamping device 1 and battery 2 are moved forward or backward by the conveyor in the conveyor mechanism. The tray assembly 10 may include an X-ray transparent tray 11. As such, the clamping device according to the present utility model can be applied in a battery production line in combination with an X-ray detection apparatus. As shown in fig. 1, X-rays emitted from the X-ray source 3 may penetrate the battery 2 and penetrate a tray 11 made of, for example, a carbon fiber material, and finally reach a flat plate to show the internal structure of the battery, thereby facilitating the detection of the battery.

With continued reference to fig. 2, which clearly shows the tray 11 and the moving frame 12 comprised in the tray assembly 10, the tray 11 comprises a carrying portion 111 designed to allow the battery 2 to be placed on said carrying portion 111 in at least a first orientation (see fig. 1) and a second orientation (see fig. 4) different from the first orientation, wherein the second orientation is rotated by 90 ° with respect to said first orientation.

As an advantageous embodiment, as shown in fig. 2 and 3, the carrier 111 has a cross shape having four radially extending portions and two mounting tabs 112 extending at an angle (e.g., vertically) from two opposite radially extending portions of the four radially extending portions, respectively, the mounting tabs 112 being provided with a plurality of mounting holes to allow fasteners to pass therethrough to secure the tray 11 to the moving frame 12. As shown in fig. 2, the moving frame 12 adopts a quadrangular structure, which greatly improves the stability of the overall frame and the compatibility with different battery weights.

It should be appreciated that, compared with the traditional tray materials (aluminum alloy, polyoxymethylene (POM), acryl, polycarbonate (PC), eupower glue, etc.), the carbon fiber plate has the advantages of low density, high transmittance, low attenuation and single component, can reduce the attenuation of X-rays in the battery detection process, further improves the quality of imaging, and simultaneously has high strength and high rigidity, can bear batteries with different weights (for example, can be compatible with batteries with higher weight) without deformation, and improves the stability of imaging. In addition, the carbon fiber material has high wear resistance, so that impurities are not introduced to cause interference on an imaging result, the imaging quality and the detection accuracy are improved, and the maintenance-free requirement of a customer can be met.

In addition, since the tray of carbon fibers is cross-shaped, compatibility with different sizes of batteries and different positioning directions/orientations of the batteries is ensured, for example, fig. 4 shows in a perspective view that batteries (which may have different size specifications) arranged in a second orientation different from the first orientation of the batteries in fig. 1 are carried and clamped by the clamping device according to an embodiment of the present utility model, so that flexibility in the field is improved, time for changing the tray caused by changing the shape of the batteries is saved, and thus production efficiency is greatly improved.

The clamping assembly 20 according to the embodiment of the present utility model includes a fixed portion and a movable portion that can be actuated to move in a direction toward or away from the fixed portion, so as to be able to allow the battery 2 to be clamped or the battery 2 to be put into or taken out of the tray 11. As shown in fig. 2, the fixed part comprises a mounting 21 and a first jaw 22, the movable part comprises an adjustment mechanism 23 and a second jaw 24, said second jaw 24 being actuatable to move in a direction towards or away from said first jaw 22, said mounting 21 and said adjustment mechanism 23 being fixed to a moving base 25. The mobile base 25 is similar to the mobile frame 12 described previously, which is intended to be fixed to the transfer mechanism to allow the transfer member to move said mobile base together with said clamping assembly 1. The mounting block 21 includes a fixing hole 212 to allow a fastener to pass through the fixing hole and be coupled to the moving base, and the fixing hole 212 may have a kidney shape (see fig. 2) to facilitate adjustment of a range of different sizes of batteries.

According to an advantageous embodiment, the first jaw 22 and the second jaw 24 are made of rubber material in order to protect the battery during clamping of the battery, and the first jaw 22 and the second jaw 24 are connected in a detachable manner to said mounting 21 and said adjusting mechanism 23, respectively. Therefore, when the clamping jaw is required to be replaced in order to be compatible with batteries with different size specifications or different placement directions or orientations, the original clamping jaw can be directly disassembled to be replaced by other matched clamping jaws. For example, referring to fig. 4, when changing the battery from a landscape orientation to a portrait orientation (the battery may be replaced with a battery 2' having a different size), a change of the battery may be accomplished using the first and second jaws 22', 24' that are replaced.

With continued reference to fig. 5a-5b in combination with fig. 6, a description will next be given of how clamping and release of the battery 2 is achieved by the clamping device 1 of an embodiment of the utility model. The adjustment mechanism 23 included in the movable portion of the clamping assembly 20 includes a push rod 231, an adjustment assembly 232, a bearing 233, and a resilient member such as a biasing spring (not specifically shown in the figures). The push rod 231 includes an adjustment ramp 2311. At the loading level, the pushing rod 231 is lifted upwards by the lifting mechanism (such as a lifting cylinder, not shown), and as the pushing rod moves from the initial position (upward in fig. 6) under the action of an external force, the bearing 233 moves along the adjustment inclined plane 2311 along the first direction a, for example, to reach the right side on the plane connected to the adjustment inclined plane, and the adjustment assembly 232 compresses the biasing spring and drives the second clamping jaw 24 to move away from the first clamping jaw 22 (in the direction of the right side as shown by the arrow in fig. 5 a), that is, the clamping assembly 20 is in an opened state, at which time the battery is allowed to be placed on the tray (or taken out from the tray).

After the battery is in place on the carbon fiber tray, the head is removed, and the push rod 231 returns to the initial position (downward in fig. 6) without an external force, the bearing 233 moves along the adjustment ramp 2311 in a second direction B opposite to the first direction a, and the biasing spring provides a restoring force to urge the adjustment assembly 232 to move the second clamping jaw 24 toward the first clamping jaw 22 (left direction as shown by the arrow in fig. 5B), i.e., the clamping assembly is in a clamped state, and the battery is pressed to the preset position. In the spring compression process, batteries with different postures can be corrected to be in a unified posture, the consistency of the postures of the batteries during detection is ensured, and the detection precision and accuracy are improved.

The clamping device for battery detection can ensure compatibility of batteries with different sizes and different positioning directions/orientations of the batteries, and meanwhile, the carbon fiber tray also allows the batteries with higher weight to be compatible, so that the imaging stability, imaging quality and detection accuracy are improved, and when the clamping device is applied to a battery production line in combination with X-ray detection equipment, the field flexibility is improved, the quick change of the batteries can be realized, and the production efficiency is greatly improved.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. It is intended that the specification and examples disclosed herein be considered as exemplary only, with a true scope of the utility model being indicated by the following claims and their equivalents.

Claims

1. Clamping device for battery detection, characterized in that the clamping device (1) comprises a tray assembly (10) for carrying a battery and a clamping assembly (20) for releasably clamping a battery, wherein the clamping assembly (20) comprises a fixed part and a movable part, which can be actuated to move in a direction towards or away from the fixed part, wherein the tray assembly (10) comprises an X-ray transparent tray (11) comprising a carrier (111) designed to allow a battery to be placed on the carrier (111) in at least a first orientation and a second orientation, wherein the second orientation is rotated 90 ° with respect to the first orientation.

2. Clamping device according to claim 1, characterized in that the tray (11) is made of carbon fiber material.

3. Clamping device according to claim 1 or 2, characterized in that the carrier part (111) is cross-shaped with four radial extensions.

4. A clamping device according to claim 3, characterized in that the tray assembly (10) further comprises a moving frame (12), the tray (11) further comprising two mounting tabs (112) extending at an angle from two opposite ones of the four radially extending portions, respectively, the tray (11) being fixed to the moving frame (12) via the two mounting tabs (112).

5. Clamping device according to claim 4, characterized in that the mobile frame (12) is quadrangular.

6. A clamping device according to claim 3, characterized in that the fixed part of the clamping assembly (20) comprises a mounting (21) and a first clamping jaw (22), the movable part of the clamping assembly (20) comprises an adjustment mechanism (23) and a second clamping jaw (24), the second clamping jaw (24) being actuatable to move in a direction towards or away from the first clamping jaw (22).

7. Clamping device according to claim 6, characterized in that the clamping assembly (20) further comprises a mobile base (25), the mounting seat (21) and the adjustment mechanism (23) being fixed to the mobile base (25).

8. Clamping device according to claim 6, characterized in that the first and second clamping jaws (22, 24) are detachably connected to the mounting seat (21) and the adjusting mechanism (23), respectively.

9. The clamping device according to claim 8, characterized in that the adjustment mechanism (23) comprises a push rod (231), an adjustment assembly (232), a bearing (233) and an elastic member, wherein the push rod (231) comprises an adjustment ramp (2311);

As the push rod (231) moves from an initial position under the action of external force, the bearing (233) moves along the adjustment inclined surface (2311) along a first direction so that the adjustment assembly (232) compresses the elastic piece and drives the second clamping jaw (24) to move away from the first clamping jaw (22);

As the push rod (231) returns to the initial position without external force, the bearing (233) moves along the adjustment inclined surface (2311) in a second direction opposite to the first direction, and the elastic member provides a restoring force to enable the adjustment assembly (232) to drive the second clamping jaw (24) to move towards the first clamping jaw (22).

10. Clamping device according to any of claims 6 to 9, characterized in that the first and second clamping jaws (22, 24) are made of a rubber material.