Wet-method flower basket pressing rod
By designing a wet flower basket press rod with rounded corners, the fragmentation and hidden cracking problems caused by the interference between the traditional press rod and the silicon wafer are solved, the yield and efficiency of the battery process are improved, and the cost is reduced.
Patent Information
- Application Number
- CN202420931769.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The sharp teeth of the traditional battery cell basket press rod will interfere with the silicon wafer when it rotates, resulting in debris, cracks and scratches. The teeth marks clearly after cleaning, affecting the efficiency of the silicon wafer.
A wet flower basket press rod is designed, with rounded corner press rod teeth and arc-shaped support rods to increase the length of the teeth, the support rod is formed with a fixed pin, and polyvinylidene fluoride material is used to avoid sharp contact and interference.
It effectively avoids debris, cracks and scratches on the surface of the silicon wafer, improves the yield of the entire line, reduces production costs, and simplifies processing difficulty.
Smart Images
Figure CN222281952U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of battery sheet preparation, in particular to a wet method flower basket pressure rod. Background Art
[0002] Cells are generally divided into single crystal silicon, polycrystalline silicon, and amorphous silicon. Single crystal silicon solar cells are the fastest-developed solar cells at present. Their structure and production process have been finalized, and the products have been widely used in space and on the ground. This type of solar cell uses high-purity single crystal silicon rods as raw materials. In order to reduce production costs, solar cells used on the ground now use solar-grade single crystal silicon rods, and the material performance indicators have been relaxed. Some can also use the head and tail materials and waste single crystal silicon materials processed by semiconductor devices, and make them into single crystal silicon rods dedicated to solar cells after re-drawing.
[0003] During the production process, battery cells need to be placed in a battery cell basket. Teeth are set on the pressure rod to position the battery cells. Traditional pressure rods are equipped with clamping teeth, which will interfere with the silicon wafer during rotation and easily cause fragments, which will have a great impact on the yield of the entire line fragments. At the same time, the initial imprint of the pressure rod clamping teeth is more obvious after the silicon wafer is texturized and cleaned, and there is water hanging on the contact position between the silicon wafer and the clamping teeth after drying, which affects the efficiency of the silicon wafer. Utility Model Content
[0004] The purpose of the utility model is to provide a wet basket pressure rod to address the above-mentioned shortcomings, which solves the problem that the sharp teeth on the pressure rod in the prior art will interfere with the silicon wafer during rotation and easily cause fragments, which will have a great impact on the yield of the entire line fragments; at the same time, the initial imprint of the pressure rod teeth is relatively obvious after the silicon wafer is woolen and cleaned, and there is water hanging at the contact position between the silicon wafer and the teeth after drying, which affects the efficiency of the silicon wafer.
[0005] The utility model is realized by the following scheme:
[0006] A wet flower basket pressure rod, at least including but not limited to a support rod and a fixed pin shaft, the fixed pin shaft is arranged at both ends of the support rod, a pressure rod tooth belt is arranged along the length direction of the support rod, the pressure rod tooth belt is arranged across the entire support rod, the pressure rod tooth belt includes a plurality of pressure rod teeth, the intervals between adjacent pressure rod teeth are arranged to be the same, and the ends of the pressure rod teeth away from the support rod are rounded.
[0007] Based on the above-mentioned structure of a wet flower basket pressure rod, the pressure rod teeth include support bars and connecting plates, the support bars are symmetrically arranged as 4, the projections of the two relatively arranged groups of support bars on the support bars are perpendicular to each other, and the connecting plates are arranged in the area between adjacent support bars.
[0008] Based on the above-mentioned wet basket pressure rod structure, the contact surface edge between the support bar and the silicon wafer is an arc surface, and the end surfaces of all support bars away from the support rod can converge together to form a convergent end, and the surface of the convergent end is chamfered.
[0009] Based on the structure of the wet basket pressure rod, the connecting piece is a planar structure.
[0010] Based on the above-mentioned structure of the wet basket pressure rod, the vertical distance between the converging end and the support rod is not less than twice the length distance of adjacent pressure rod teeth.
[0011] Based on the above-mentioned structure of the wet-process flower basket pressure rod, the support rod, the fixed pin shaft and the pressure rod teeth are integrally formed by die-casting and are made of polyvinylidene fluoride material.
[0012] Based on the above-mentioned structure of the wet basket pressure rod, the fixed pin shaft includes a connecting body and a latch plate; the latch plate is arranged at the center position of the connecting body, and the center of the latch plate is colinear with the center of the support rod.
[0013] Based on the structure of the wet basket pressure rod, the cross section of the connector is a teardrop-shaped structure, and the cross section of the latch piece is a rectangular structure.
[0014] Based on the structure of the wet basket pressure rod, the direction from the convergent end of the pressure rod teeth to the surface of the support rod is perpendicular to the rectangular direction of the latch piece.
[0015] Based on the structure of the wet basket pressure rod, the pressure rod teeth are in a diamond-shaped structure as a whole.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0017] 1. When using this solution, the fixed pin is inserted into the rotating mechanism. The rotation of the rotating mechanism drives the support rod to rotate. The end of the pressure rod teeth is rounded to increase the pressure when the pressure rod teeth contact the silicon wafer, avoiding the risk of causing fragments, cracks or scratches on the surface of the silicon wafer.
[0018] 2. This solution increases the tooth length of the pressure rod teeth to avoid interference with the silicon wafer during the rotation of the pressure rod, which may lead to batch defects.
[0019] 3. This solution has a simple structure, low processing difficulty and low cost. It solves the problem of batch defects caused by the pressure rod structure in the battery cell manufacturing process, and avoids batch fragments, hidden cracks, scratches and other defects caused by the pressure rod in the battery cell manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;
[0021] Figure 2 It is a schematic diagram of the overall side view of the utility model;
[0022] Figure 3 It is a schematic diagram of the top view of the structure of the medium pressure rod teeth of the utility model;
[0023] Figure 4 It is a three-dimensional structural schematic diagram of the medium pressure rod teeth of the utility model;
[0024] Description of the drawings: 1. Support rod; 2. Fixed pin shaft; 3. Pressure rod tooth belt; 4. Pressure rod teeth; 21. Connecting body; 22. Latch plate; 41. Support bar; 42. Connecting plate. DETAILED DESCRIPTION
[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.
[0026] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.
[0027] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0028] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.
[0029] Example 1
[0030] like Figure 1 and 4 As shown, the utility model provides a technical solution:
[0031] A wet-process flower basket pressure rod, which at least includes but is not limited to a support rod 1 and a fixed pin 2, wherein the fixed pin 2 is arranged at both ends of the support rod 1, and a pressure rod toothed belt 3 is arranged along the length direction of the support rod 1, the pressure rod toothed belt 3 is arranged across the entire support rod 1, the pressure rod toothed belt 3 includes a plurality of pressure rod teeth 4, the intervals between adjacent pressure rod teeth 4 are arranged to be the same, and the ends of the pressure rod teeth 4 away from the support rod 1 are rounded.
[0032] Based on the above structure, when in use, the fixed pin 2 is inserted into the rotating mechanism, and the rotation of the rotating mechanism drives the support rod 1 to rotate. The end of the pressure rod tooth 4 is rounded, which can increase the pressure when the pressure rod tooth 4 contacts the silicon wafer, avoiding the risk of causing fragments, hidden cracks or scratches on the surface of the silicon wafer.
[0033] As an example, the pressure rod teeth 4 may include support bars 41 and connecting plates 42. The support bars 41 are symmetrically arranged as four bars. The projections of two relatively arranged groups of support bars 41 on the support rod 1 are perpendicular to each other. The connecting plates 42 are arranged in the area between adjacent support bars 41, so that the pressure rod teeth 4 form a diamond structure.
[0034] Based on the above structure, when positioning the silicon wafer, the support bar 41 is in direct contact with the silicon wafer. By setting it as a diamond structure, the overall connection strength can be guaranteed, and the silicon wafer can be stably fixed and positioned.
[0035] As an example, the contact surface edge between the support bar 41 and the silicon wafer is an arc-shaped surface, and the end surfaces of all the support bars 41 away from the support rod 1 can converge together to form a convergent end, and the surface of the convergent end is chamfered.
[0036] Based on the above structure, by setting the contact surface between the support bar 41 and the silicon wafer as an arc surface, it is possible to avoid damage to the surface of the silicon wafer caused by the sharp surface, and by rounding the converging end, it is possible to avoid damage to the silicon wafer during rotation.
[0037] As an example, the connecting piece 42 is a planar structure. By setting the connecting piece 42 as a planar structure, when the silicon wafer is placed, if there is an angle deviation during placement, the planar structure of the connecting piece 42 can have a larger contact area with the silicon wafer, thereby avoiding damage to the silicon wafer.
[0038] As an example, the vertical distance between the converging end and the support rod 1 is not less than twice the length of the adjacent pressure rod teeth 4 .
[0039] Based on the above structure, by setting the length of the pressure rod teeth 4 to be no less than twice the length of the adjacent pressure rod teeth 4, the length of the pressure rod can be greatly increased, further avoiding interference with the silicon wafer during the rotation of the pressure rod, resulting in batch defects.
[0040] As an example, the support rod 1, the fixing pin 2 and the pressure rod teeth 4 are integrally formed by die-casting and can be made of PVDF (polyvinylidene fluoride) material.
[0041] As an example, the fixed pin shaft may include a connecting body 21 and a latch piece 22; the latch piece 22 is arranged at the center of the connecting body 21, and the center of the latch piece 22 is collinear with the center of the support rod 1, the cross section of the connecting body 21 is a teardrop-shaped structure, and the cross section of the latch piece 22 is a rectangular structure;
[0042] The direction from the convergent end of the pressure rod teeth 4 to the surface of the support rod 1 is perpendicular to the rectangular direction of the latch piece 22 .
[0043] Based on the above structure, the connector 21 can be quickly positioned by providing a water drop-shaped structure, so that it can be quickly assembled with an external rotating structure.
[0044] This solution rounds off the corners of the pressure rod teeth and increases the tooth length, which can avoid interference with the silicon wafer during the rotation of the pressure rod and cause batch defects; this solution has a simple structure, low processing difficulty and low cost, and solves the batch defects caused by the pressure rod structure in the battery cell manufacturing process, and avoids batch fragments, hidden cracks, scratches and other defects caused by the pressure rod in the battery cell manufacturing process.
[0045] The above-described scheme 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 shall be included in the protection scope of the present invention.
Claims
1. A wet method flower basket press rod, characterized in that: At least it includes but is not limited to a support rod and a fixed pin shaft, the fixed pin shaft is arranged at both ends of the support rod, a pressure rod toothed belt is arranged along the length direction of the support rod, the pressure rod toothed belt is arranged across the entire support rod, the pressure rod toothed belt includes a plurality of pressure rod teeth, the intervals between adjacent pressure rod teeth are arranged to be the same, and the ends of the pressure rod teeth away from the support rod are rounded.
2. A wet method flower basket pressing rod as claimed in claim 1, characterized in that: The pressure rod teeth include support bars and connecting pieces. The support bars are symmetrically arranged in four pieces. The projections of two groups of support bars arranged opposite to each other on the support bars are perpendicular to each other. The connecting piece is arranged in the area between adjacent support bars.
3. A wet method flower basket pressing rod as claimed in claim 2, characterized in that: The contact surface edge between the support bar and the silicon wafer is an arc surface, and the end surfaces of all the support bars away from the support rod can be gathered together to form a convergent end, and the surface of the convergent end is chamfered.
4. A wet method basket pressing rod as claimed in claim 3, characterized in that: The connecting piece is a planar structure.
5. A wet method basket pressing rod as claimed in claim 4, characterized in that: The vertical distance between the converging end and the support rod is not less than twice the length of the adjacent pressure rod teeth.
6. A wet method basket pressing rod as claimed in claim 5, characterized in that: The support rod, the fixed pin shaft and the pressure rod teeth are integrally formed by die-casting and are made of polyvinylidene fluoride material.
7. A wet method basket pressing rod as claimed in claim 6, characterized in that: The fixed pin shaft comprises a connecting body and a latch piece; the latch piece is arranged at the center position of the connecting body, and the center of the latch piece is colinear with the center of the support rod.
8. A wet method basket pressing rod as claimed in claim 7, characterized in that: The cross section of the connector is a teardrop-shaped structure, and the cross section of the latch piece is a rectangular structure.
9. A wet method basket pressing rod as claimed in claim 8, characterized in that: The direction from the convergent end of the pressure rod teeth to the surface of the support rod is perpendicular to the long direction of the latch piece.
10. A wet method basket pressing rod as claimed in claim 9, characterized in that: The pressure rod teeth are in a rhombus structure as a whole.