Square winding battery winding core tab dislocation detection device

Abstract

The utility model discloses a winding core tab dislocation detection device for a square winding battery. The detection device comprises a roll core bearing plate, four tab detection heads and a standard code carving ruler, the tab detection heads are movably arranged on the roll core bearing plate along the same straight line; and the standard code carving ruler is arranged on the roll core bearing plate in parallel along the moving direction of the tab detection head. The four tab detection heads which move along the same straight line are matched with the standard code carving ruler, so that the positions of the tab detection heads can be adjusted at will, the center distance and the edge distance of the roll core tab can be detected at the same time, and the device has the advantages of being high in detection speed and high in accuracy; the detection device is simple in structure, convenient to operate, good in universality, capable of being suitable for dislocation detection of various types of roll core tabs with symmetrical or asymmetrical positive and negative tabs, beneficial for reducing over-killing and missing-killing phenomena in the detection process, and suitable for large-scale application in industrial production of battery roll cores.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, and in particular to a square wound battery winding core tab misalignment detection device. Background Art

[0002] With the widespread use of lithium-ion batteries, the scale of industrial production of lithium-ion batteries has increased year by year. In the industrial production process of lithium-ion batteries, battery quality control is crucial, and related measurement tools directly affect the battery quality test results and test efficiency.

[0003] For square wound batteries, the inspection of tab misalignment is crucial. If the tab misalignment cannot be detected quickly and effectively, defective products will flow out, which will directly affect the production efficiency and safety of the product. Most of the existing core tab misalignment detection jigs can only determine whether misalignment has occurred by measuring the center distance. This method has a good detection effect on cores with symmetrical positive and negative tabs, but for core products with asymmetric positive and negative tabs, it is impossible to determine whether the tabs are misaligned by the center distance. At the same time, the existing tab misalignment detection jigs have a high degree of matching with the core model, and it is difficult to use a set of jigs to detect multiple types of cores, which requires companies to equip a large number of detection jigs of different models, increasing the detection cost. Utility Model Content

[0004] The purpose of the utility model is to propose a square wound battery core tab misalignment detection device in view of the above-mentioned defects of the existing winding core tab misalignment detection jig.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A square wound battery core tab misalignment detection device comprises a core carrier plate, four tab detection heads and a standard scale; the tab detection heads are movably arranged on the core carrier plate along the same straight line; the standard scale is arranged parallel to the movable direction of the tab detection heads on the core carrier plate.

[0007] The utility model discloses a square wound battery core lug misalignment detection device. By means of the cooperation of four lug detection heads movable along the same straight line and a standard scale ruler, the position of the lug detection head can be adjusted arbitrarily, and the simultaneous detection of the center distance and the margin of the lug of the core can be achieved. The utility model has the advantages of fast detection speed and high accuracy. The detection device has a simple structure, convenient operation and good versatility. It can be applied to the misalignment detection of lugs of various types of cores with symmetrical or asymmetrical positive and negative lugs, which is beneficial to reducing the over-killing and missed-killing phenomena in the detection process, has a positive effect on reducing the scrap rate and the missed-discharge rate of the product, and is suitable for large-scale application in the industrial production of battery cores.

[0008] Preferably, the core supporting plate is a flat plate for supporting the core.

[0009] Preferably, a slide groove is provided on the winding core carrying plate, and the tab detection head is slidably disposed in the slide groove.

[0010] Preferably, a slide rail is provided on the winding core carrying plate, and the tab detection head is slidably disposed on the slide rail.

[0011] Preferably, a fence is also provided around the core support plate, which is convenient for placing the battery core and can avoid the core from sliding during detection, making the detection more accurate and faster.

[0012] Preferably, a recessed area is also provided on the roll core supporting plate; the recessed area is recessed inward from the edge of the roll core supporting plate; the recessed area can shorten the intercept of the roll core supporting plate in the area without affecting the load-bearing capacity of the roll core, thereby facilitating gripping; more preferably, the recessed areas are symmetrically arranged.

[0013] Preferably, the core carrier plate is a non-metallic plate; more preferably, the core carrier plate is a PE plate; thus, metal materials are avoided from being brought into the production workshop, thereby reducing production safety risks.

[0014] Preferably, the tab detection head is a non-metallic slider; the four tab detection heads cooperate with the standard scale to detect the center distance and margin distance of the tab; the non-metallic material avoids bringing metal materials into the production workshop, reducing production safety risks, and the slider has a simple structure and is easy to operate.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] 1. The utility model provides a square wound battery core tab misalignment detection device, which can adjust the position of the tab detection head arbitrarily and realize simultaneous detection of the tab center distance and edge distance of the core tab through the cooperation of four tab detection heads that move along the same straight line and the standard scale, and has the advantages of fast detection speed and high accuracy.

[0017] 2. The square wound battery core lug misalignment detection device of the utility model has a simple structure, is easy to operate, and has good versatility. It can be applied to the misalignment detection of various types of core lugs with symmetrical or asymmetrical positive and negative lugs, which is beneficial to reducing over-killing and missed killing phenomena in the detection process, and has a positive effect on reducing the scrap rate and leakage rate of the product. It is suitable for large-scale application in the industrial production of battery cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a top view of the detection device in Example 1 of the utility model;

[0019] Figure 2 It is a left side view of the detection device in Example 1 of the utility model;

[0020] Figure 3 It is a front view of the detection device in Example 1 of the utility model;

[0021] Figure 4 is a top view of the detection device in Example 2 of the utility model;

[0022] Figure 5 The detection device in Example 2 of the utility model is along Figure 4 Sectional view of the AA plane;

[0023] Figure 6 It is a front view of the detection device in Example 2 of the utility model;

[0024] Figure 7 This is a diagram showing the use status of the detection device in Embodiment 2 of the present utility model;

[0025] Figure 8 is a top view of the detection device in Example 3 of the utility model;

[0026] Fig. 9 The detection device in Example 3 of the utility model is along Figure 8 Cross-sectional view of the middle BB plane.

[0027] Markings in the figure: 1- core bearing plate; 2- ear detection head; 3- slide groove; 4- standard scale; 5- fence; 6- recessed area; 7- square core; 8- ear; 9- slide rail. DETAILED DESCRIPTION

[0028] The utility model is described in detail below in conjunction with the accompanying drawings.

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding devices / components / elements are within the error / deviation range, they can still achieve their functions in the solution of the utility model.

[0032] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", "arranged", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, etc. The connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0033] Example 1

[0034] A square wound battery core lug misalignment detection device ( Figure 1 , Figure 2 , Figure 3), consists of a core carrier plate 1, four tab detection heads 2 and a standard scale 4; a slide groove 3 is provided on the core carrier plate 1, and the tab detection head 2 is movably arranged on the core carrier plate 1 through the slide groove 3; the standard scale 4 is arranged on the core carrier plate 1 parallel to the movable direction of the tab detection head 2 (i.e., along the direction of the slide groove 3); the core carrier plate 1 is a flat PE plate; the tab detection head 2 is a PE slider.

[0035] The detection device can be applied to the misalignment detection of various types of winding core tabs with symmetrical or asymmetrical positive and negative tabs, and has the advantages of fast detection speed, simple operation and high accuracy.

[0036] Example 2

[0037] A square wound battery core lug misalignment detection device ( Figure 4 , Figure 5 , Figure 6 ), consisting of a core carrier plate 1, four tab detection heads 2 and a standard scale 4; a slide groove 3 is provided on the core carrier plate 1, and the tab detection head 2 is movably set on the core carrier plate 1 through the slide groove 3; the standard scale 4 is set on the core carrier plate 1 parallel to the moving direction of the tab detection head 2 (i.e. along the direction of the slide groove 3); a fence 5 is also provided around the core carrier plate 1, and the left and right edges of the core carrier plate 1 are recessed inward to provide a recessed area 6, and in the area of ​​the core carrier plate 1 provided with the recessed area 6, the fence 5 is not provided for easy gripping; the core carrier plate 1 is a flat PE plate; the tab detection head 2 is a PE slider.

[0038] The detection device can be applied to the misalignment detection of various models of winding core tabs with symmetrical or asymmetrical positive and negative pole tabs, and has the advantages of fast detection speed, simple operation and high accuracy. At the same time, the setting of the fence 5 is also more conducive to the stable placement of the winding core and more convenient measurement. The setting of the recessed area 6 makes it easier to hold the detection device and is easy to carry.

[0039] Example 3

[0040] A square wound battery core lug misalignment detection device ( Figure 8 , Fig. 9 ), consisting of a core carrier plate 1, four tab detection heads 2 and a standard scale 4; a slide rail 9 is provided on the core carrier plate 1, and the tab detection head 2 is movably arranged on the core carrier plate 1 through the slide rail 9; the standard scale 4 is arranged on the core carrier plate 1 parallel to the movable direction of the tab detection head 2 (i.e., along the direction of the slide rail 9); a fence 5 is also arranged around the core carrier plate 1, and the left and right edges of the core carrier plate 1 are recessed inwardly to form a recessed area 6, and in the area of ​​the core carrier plate 1 where the recessed area 6 is provided, the fence 5 is not provided for easy gripping; the core carrier plate 1 is a flat PVC board; the tab detection head 2 is a PVC slider.

[0041] The detection device can be applied to the misalignment detection of various models of winding core tabs with symmetrical or asymmetrical positive and negative pole tabs, and has the advantages of fast detection speed, simple operation and high accuracy. At the same time, the setting of the fence is also more conducive to the stable placement of the winding core and more convenient measurement. The setting of the recessed area facilitates the holding of the detection device and is easy to carry.

[0042] Example 4

[0043] The method for using the square wound battery core tab misalignment detection device in Example 2 (such as Figure 7 As shown in the figure, the square core 7 is placed on the core carrier plate 1, and the tabs 8 of the square core 7 are placed between the two tab detection heads 2 respectively; the four tab detection heads 2 are slid respectively, so that the four tab detection heads 2 are close to the two sides of the tab 8 respectively, and at this time, the reading of each tab detection head 2 on the standard scale 4 is read, and the center distance and margin distance of the tab 8 on the square core 7 can be obtained through simple addition and subtraction calculations based on the readings, so as to judge whether the tab 8 of the square core 7 is misaligned; the detection device has a simple structure, is easy to operate, has a fast detection speed and good accuracy, and is suitable for large-scale application in the detection of misalignment of the tabs of the square core.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A square wound battery core lug misalignment detection device, characterized in that: The invention comprises a core carrier plate (1), four tab detection heads (2) and a standard scale ruler (4); the tab detection heads (2) are movably arranged on the core carrier plate (1) along the same straight line; the standard scale ruler (4) is arranged on the core carrier plate (1) in parallel with the movable direction of the tab detection heads (2); and recessed areas (6) are symmetrically arranged on the core carrier plate (1), and the recessed areas (6) are recessed inwardly from the edge of the core carrier plate (1).

2. The detection device according to claim 1, characterized in that: The winding core supporting plate (1) is a flat plate.

3. The detection device according to claim 1, characterized in that: The winding core carrying plate (1) is provided with a slide groove (3), and the tab detection head (2) is slidably arranged in the slide groove (3).

4. The detection device according to claim 1, characterized in that: A slide rail (9) is provided on the winding core bearing plate (1), and the tab detection head (2) is slidably arranged on the slide rail (9).

5. The detection device according to any one of claims 1 to 4, characterized in that: The core support plate (1) is also provided with fences (5) around it.

6. The detection device according to any one of claims 1 to 4, characterized in that: The winding core supporting plate (1) is a non-metallic plate.

7. The detection device according to claim 6, characterized in that: The core support plate (1) is a PE plate.

8. The detection device according to any one of claims 1 to 4, characterized in that: The tab detection head (2) is a non-metallic slider.

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