Solder strip tension measuring device

Abstract

The utility model discloses a solder strip tension measuring device. The welding strip tension measuring device comprises a fixing mechanism, a clamping mechanism and a tension mechanism, the fixing mechanism is used for fixing a battery piece, the clamping mechanism is used for clamping a covering film on the battery piece, and the tension mechanism is connected to the clamping mechanism and used for driving the clamping mechanism and the covering film to move. According to the welding strip tension measuring device, the quality of the battery string is represented through the composite strength of the covering film and the battery piece, the battery string is formed by combining the battery piece, the welding strip and the covering film, the covering film has certain elasticity, and the covering film is clamped through the clamping mechanism; and then the clamping mechanism is driven by the tension mechanism to drive the covering film to be separated from the battery piece, and the welding capacity of the battery string is reflected by representing the tension between the covering film and the battery piece. When the battery string is tested, the battery piece cannot be cracked in the pulling process, and the authenticity of test data is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a welding strip tension measuring device. Background Art

[0002] In the 0BB technology coating process in the photovoltaic field, an effective battery string is formed by combining the welding strip, battery cell and coating. In order to better control the composite ability between the welding strip, battery cell and coating, it is necessary to characterize the composite force of the three. The conventional half-cell process is heated by infrared lamps and hot plates. The high temperature makes the welding strip and the battery cell silver paste alloyed, and then the welding tension is characterized by peeling the welding strip. The premise of this welding ability characterization is that the welding strip and the battery cell need to be alloyed. In the coating process, the welding strip and the battery cell are produced at low temperature in the process of forming the battery string, and alloys cannot be formed. The welding ability of the welding strip and the battery cell silver paste cannot be characterized by pulling off, and the composite coating has a strong bonding ability with the battery cell. In the process of pulling the welding strip, it is easy to cause cracks to the battery cell or the welding strip is easy to slip or be broken due to excessive bonding ability. The authenticity of the data cannot be determined. Utility Model Content

[0003] Based on this, it is necessary to provide a welding strip tension measurement device. The welding strip tension measurement device of the utility model can characterize the composite capacity of the welding strip, the battery cell and the coating, so as to control the string making capacity later, and in the composite capacity characterization process, basically no crack damage is caused to the battery cell, ensuring the authenticity and reliability of the composite capacity characterization data.

[0004] An embodiment of the present application provides a welding ribbon tension measurement device.

[0005] A welding strip tension measuring device comprises a fixing mechanism, a clamping mechanism and a tension mechanism, wherein the fixing mechanism is used to fix a battery cell, the clamping mechanism is used to clamp a coating on the battery cell, and the tension mechanism is connected to the clamping mechanism and is used to drive the clamping mechanism and the coating to move.

[0006] In some embodiments, the fixing mechanism includes a fixing base and an adsorption platform, the adsorption platform is installed on the fixing base, and the adsorption platform is used to adsorb and fix the battery cell.

[0007] In some embodiments, the adsorption platform has a fixing groove, which is used to accommodate the battery cell. The bottom surface of the fixing groove has an adsorption hole, and the adsorption hole can generate negative pressure through an external adsorption device to achieve adsorption and fixation of the battery cell in the fixing groove.

[0008] In some embodiments, there are multiple adsorption holes, and the multiple adsorption holes are arranged at intervals.

[0009] In some embodiments, the fixing mechanism or the fixing base is a gantry-shaped structure.

[0010] In some embodiments, the clamping mechanism includes a first clamp and a second clamp, the first clamp and the second clamp are arranged opposite to each other in the vertical direction, the first clamp and the second clamp are used to clamp the edge of the coating, and the first clamp and / or the second clamp are connected to the tension mechanism.

[0011] In some embodiments, the first clamping plate and the second clamping plate can be connected via a magnetic connection, a cylinder drive connection, or a motor drive connection.

[0012] In some embodiments, the tension mechanism is a tensioner.

[0013] In some embodiments, the welding ribbon tension measuring device further includes a moving mechanism, the tension mechanism is mounted on the moving mechanism, and the moving mechanism is used to assist the movement of the tension mechanism.

[0014] In some embodiments, the moving mechanism includes a guide rail, a slider and a moving drive component, the guide rail extends along the test direction, the slider is slidably connected to the guide rail, the tension mechanism is installed on the slider, and the moving drive component is used to drive the slider to move along the guide rail.

[0015] The above-mentioned welding ribbon tension measurement device characterizes the quality of the battery string by measuring the composite strength of the coating and the battery cell. Specifically, the present application is based on the fact that the battery string is composed of three materials: battery cell, welding ribbon and coating, and the coating has a certain elasticity. The coating is clamped by a clamping mechanism, and then the clamping mechanism is driven by a tension mechanism to separate the coating from the battery cell. The welding ability of the battery string is reflected by characterizing the tension between the coating and the battery cell, thereby effectively characterizing the composite ability of the welding ribbon, battery cell and coating, so as to control the string making ability later. In the process of composite ability characterization, basically no crack damage will be caused to the battery cell, thereby ensuring the authenticity and reliability of the composite ability characterization data. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0017] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0018] Figure 1 This is a schematic diagram of a welding strip tension measuring device according to an embodiment of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of a welding strip tension measuring device described in one embodiment of the utility model.

[0020] Description of Reference Numerals

[0021] 10. Welding ribbon tension measuring device; 100. Fixing mechanism; 110. Fixing base; 120. Adsorption platform; 200. Clamping mechanism; 210. First clamping plate; 220. Second clamping plate; 300. Tension mechanism; 400. Moving mechanism; 410. Guide rail; 420. Slider; 500. Display mechanism; 20. Battery cell; 30. Coating. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] The embodiment of the present application provides a welding ribbon tension measurement device to solve the problem in the existing film coating process that, because the welding ribbon and the battery cell cannot form an alloy, the welding ribbon and the battery cell silver paste cannot be characterized by pulling off, and the composite coating and the battery cell have strong bonding ability, which easily causes the battery cell to crack during the pulling process of the welding ribbon, or the welding ribbon is easy to slip or be broken due to excessive bonding ability, and the authenticity of the data cannot be determined. The welding ribbon tension measurement device will be described below in conjunction with the accompanying drawings.

[0029] The welding strip tension measuring device 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 The schematic diagram of the structure of the welding strip tension measuring device 10 provided in the embodiment of the present application is shown in FIG. The welding strip tension measuring device 10 of the present application can be used to test the welding quality of battery strings.

[0030] In order to more clearly illustrate the structure of the welding strip tension measuring device 10, the welding strip tension measuring device 10 will be introduced in conjunction with the accompanying drawings. Figure 1 As shown, Figure 1 A schematic structural diagram of a welding ribbon tension measuring device 10 provided in an embodiment of the present application.

[0031] A welding strip tension measuring device 10 includes a fixing mechanism 100, a clamping mechanism 200 and a tension mechanism 300. The fixing mechanism 100 is used to fix a battery cell 20. The clamping mechanism 200 is used to clamp a film 30 on the battery cell 20. The tension mechanism 300 is connected to the clamping mechanism 200 and is used to drive the clamping mechanism 200 and the film 30 to move. Figure 1 At the angle shown, the covering film 30 is flipped 180° after being clamped by the clamping mechanism 200 and then separated from the battery cell 20 .

[0032] In some of these examples, see Figure 1 and Figure 2 As shown, Figure 2 This is a partial structural diagram of a welding ribbon tension measurement device according to an embodiment of the utility model. The fixing mechanism 100 includes a fixing base 110 and an adsorption platform 120. The adsorption platform 120 is installed on the fixing base 110, and the adsorption platform 120 is used to adsorb and fix the lower bottom surface of the battery cell 20.

[0033] In some embodiments, a fixing groove is provided on the adsorption platform 120. The fixing groove is used to accommodate the battery cell 20, and the bottom surface of the fixing groove has an adsorption hole, which can generate negative pressure through an external adsorption device to achieve adsorption and fixation of the battery cell 20 in the fixing groove. The design of the adsorption hole can ensure that the battery cell 20 in the fixing groove is in a fixed state, and prevent the battery cell 20 from shifting during the test process.

[0034] In some embodiments, the number of adsorption holes is multiple. The multiple adsorption holes are arranged at intervals. The number of adsorption holes is multiple means that the number of adsorption holes in the same fixed groove is multiple, or the number of adsorption holes in multiple fixed grooves is multiple. Preferably, the number of adsorption holes in each fixed groove is multiple.

[0035] In some of these examples, see Figure 1 As shown, the fixing mechanism 100 or the fixing base 110 is a gantry-shaped structure. Figure 1 As shown, the gantry structure is an approximately inverted U-shaped structure as a whole. The fixing mechanism 100 or the fixing base 110 of the gantry structure facilitates the installation of the guide rail 410 of the moving mechanism 400 described below, and makes way for the guide rail 410 so that the clamping mechanism 200 can move to the top of the battery cell 20, so as to realize that the coating 30 on the battery cell 20 is gradually separated from the battery cell 20 after being flipped 180° from one side.

[0036] In some embodiments, the fixing mechanism 100 is a gantry-shaped structure as a whole, or the fixing base 110 of the fixing mechanism 100 is a gantry-shaped structure. When the fixing mechanism 100 is a gantry-shaped structure as a whole, the fixing base 110 includes side panels arranged opposite to each other, the adsorption platform 120 is connected to the top of the two side panels, and the adsorption platform 120 and the side panels of the fixing base 110 constitute a gantry-shaped structure as a whole. When the fixing base 110 of the fixing mechanism 100 is a gantry-shaped structure, the fixing mechanism 100 includes two side panels arranged opposite to each other and a top panel located on the top of the two side panels, the side panels are connected to the top panel to form a gantry-shaped structure, and the adsorption platform 120 is connected to the top panel.

[0037] In some of these examples, see Figure 1 and Figure 2 As shown, the clamping mechanism 200 includes a first clamping plate 210 and a second clamping plate 220. The first clamping plate 210 and the second clamping plate 220 are arranged opposite to each other in the vertical direction. The first clamping plate 210 and the second clamping plate 220 are used to clamp the edge of the coating 30, and the first clamping plate 210 and / or the second clamping plate 220 are connected to the tension mechanism 300. Preferably, the first clamping plate 210 and the second clamping plate 220 are both connected to the tension mechanism 300.

[0038] In some embodiments, the first clamping plate 210 and the second clamping plate 220 can be connected via a magnetic connection, a cylinder drive connection, or a motor drive connection.

[0039] In some embodiments, the tension mechanism 300 is a tensioner, and the tension mechanism 300 can read the tension value in real time.

[0040] In some of these examples, see Figure 1 As shown, the welding strip tension measuring device 10 further includes a moving mechanism 400. The tension mechanism 300 is mounted on the moving mechanism 400, and the moving mechanism 400 is used to assist the tension mechanism 300 in moving.

[0041] In some of these embodiments, please refer again to Figure 1 As shown, the moving mechanism 400 includes a guide rail 410, a slider 420, and a moving driving component. The guide rail 410 extends along the test direction, the slider 420 is slidably connected to the guide rail 410, the tension mechanism 300 is installed on the slider 420, and the moving driving component is used to drive the slider 420 to move along the guide rail 410. The moving driving component is not shown in the drawings. The moving driving component can be a driving motor, a driving cylinder, etc.

[0042] In some of the embodiments, preferably, a portion of the guide rail 410 extends to below the gantry-shaped fixing mechanism 100 or the fixing base 110 . Such an arrangement enables the tension mechanism 300 , such as a tensioner, to move to above the battery cell 20 .

[0043] In some embodiments, the welding strip tension measuring device 10 further includes a display mechanism 500. The tension mechanism 300 is electrically connected to the display mechanism 500, and the display mechanism 500 can display the tension data tested by the tension mechanism 300. Preferably, the display mechanism 500 can be a display, a touch screen, etc. Figure 1 As shown, the fixing mechanism 100 , the clamping mechanism 200 and the tension mechanism 300 are all installed on the display mechanism 500 .

[0044] When the welding ribbon tension measuring device 10 is used, one of the battery cells 20 of the battery string after welding is placed in the fixed groove of the adsorption platform 120 on the fixed base 110, and a negative pressure is generated by an external adsorption device to adsorb and fix the battery cell 20. The first clamping plate 210 and the second clamping plate 220 of the clamping mechanism 200 cooperate with each other to clamp the edge of the film 30 on the fixed battery cell 20 of the battery string, and the moving driving component is controlled to drive the slider 420 to move, so that the tension mechanism 300 gradually tears off the film 30 from the battery cell 20. When tearing off, refer to Figure 1 As shown, the coating 30 is separated from the battery cell 20 in a 180° reverse direction, and the measured tension value is displayed by the display mechanism 500 to facilitate human-computer interaction. The welding capacity of the battery cell 20, welding strip and coating 30 on the battery string can be calculated and characterized by the tension value.

[0045] In summary, the welding strip tension measurement device 10 of the present application characterizes the quality of the battery string by measuring the composite strength of the coating 30 and the battery cell 20. Specifically, the present application is based on the fact that the battery string is composed of three materials, the battery cell 20, the welding strip and the coating 30, and the coating 30 has a certain elasticity. The coating 30 is clamped by the clamping mechanism 200, and then the clamping mechanism 200 is driven by the tension mechanism 300 to drive the coating 30 to gradually separate from the battery cell 20. The welding ability of the battery cell 20, the welding strip and the coating 30 on the battery string is reflected by characterizing the tension between the coating 30 and the battery cell 20. When the present application tests the battery string, the battery cell 20 will not be cracked during the pulling process, and the test data is true and accurate.

[0046] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A welding strip tension measuring device (10), characterized in that: The invention comprises a fixing mechanism (100), a clamping mechanism (200) and a pulling mechanism (300), wherein the fixing mechanism (100) is used to fix a battery cell (20), the clamping mechanism (200) is used to clamp a coating (30) on the battery cell (20), and the pulling mechanism (300) is connected to the clamping mechanism (200) and is used to drive the clamping mechanism (200) and the coating (30) to move.

2. The welding strip tension measuring device (10) according to claim 1, characterized in that: The fixing mechanism (100) comprises a fixing base (110) and an adsorption platform (120) for adsorbing and fixing the battery sheet (20); the adsorption platform (120) is mounted on the fixing base (110).

3. The welding strip tension measuring device (10) according to claim 2, characterized in that: The adsorption platform (120) is provided with a fixing groove for accommodating a battery cell (20), and the bottom surface of the fixing groove is provided with an adsorption hole, and the adsorption hole can generate negative pressure through an external adsorption device to achieve adsorption and fixation of the battery cell (20) in the fixing groove.

4. The welding strip tension measuring device (10) according to claim 3, characterized in that: The number of the adsorption holes is multiple, and the multiple adsorption holes are arranged at intervals.

5. The welding strip tension measuring device (10) according to claim 2, characterized in that: The fixing mechanism (100) or the fixing base (110) is in the form of a gantry structure.

6. The welding strip tension measuring device (10) according to any one of claims 1 to 5, characterized in that: The clamping mechanism (200) comprises a first clamping plate (210) and a second clamping plate (220), wherein the first clamping plate (210) and the second clamping plate (220) are arranged opposite to each other in a vertical direction, and the first clamping plate (210) and the second clamping plate (220) are used to clamp the edge of the coating (30), and the first clamping plate (210) and / or the second clamping plate (220) are connected to the tension mechanism (300).

7. The welding strip tension measuring device (10) according to claim 6, characterized in that: The first clamping plate (210) and the second clamping plate (220) can be connected via a magnetic connection, a cylinder drive connection, or a motor drive connection.

8. The welding strip tension measuring device (10) according to any one of claims 1 to 5 and 7, characterized in that: The tension mechanism (300) is a tensioner.

9. The welding strip tension measuring device (10) according to any one of claims 1 to 5 and 7, characterized in that: The welding strip tension measurement device (10) further comprises a moving mechanism (400), the tension mechanism (300) being mounted on the moving mechanism (400), and the moving mechanism (400) being used to assist the tension mechanism (300) in moving.

10. The welding strip tension measuring device (10) according to claim 9, characterized in that: The moving mechanism (400) comprises a guide rail (410), a slider (420) and a moving driving component; the guide rail (410) extends along a testing direction; the slider (420) is slidably connected to the guide rail (410); the tension mechanism (300) is mounted on the slider (420); and the moving driving component is used to drive the slider (420) to move along the guide rail (410).

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