A battery formation fixture

Abstract

The utility model provides a kind of battery formation fixture, including first fixture, second fixture and flexible piece, second fixture is oppositely arranged with first fixture, and first fixture and second fixture are used to be clamped in battery both sides;And, flexible piece is used to butt between first fixture and battery, and the hardness of flexible piece is less than the hardness of second fixture;In the process of battery formation, first fixture and second fixture are clamped in battery both sides, and the flexible piece with smaller hardness can buffer battery, so that pressure can be stably and uniformly transmitted to battery in the process of formation, and the second fixture with larger hardness can realize hard contact with battery, so that battery expansion can be inhibited, so that the stability of battery size after formation is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery formation fixture. Background Technology

[0002] Battery formation fixtures are key equipment used in the battery formation process, and their design and function directly affect the formation effect and final performance of the battery.

[0003] In related technologies, batteries are prone to expansion during the formation process, and friction with the surface of the fixture can damage the batteries, resulting in a high defect rate. Utility Model Content

[0004] The present invention provides a battery formation fixture that can improve the technical problem of high product defect rate caused by battery expansion and friction between the battery and the fixture surface.

[0005] In a first aspect, embodiments of the present invention provide a battery formation fixture, comprising:

[0006] The first fixture;

[0007] The second fixture is disposed opposite to the first fixture, and the first fixture and the second fixture are used to clamp the battery on both sides;

[0008] A flexible component is used to abut between the first fixture and the battery, and the hardness of the flexible component is less than that of the second fixture.

[0009] In one embodiment, the second fixture includes a body and two protrusions, the protrusions being disposed on the surface of the body facing the first fixture, and the two protrusions being spaced apart to form a formation space for embedding the core of the battery.

[0010] In one embodiment, the flexible element is disposed opposite to the formation space.

[0011] Because an independent core formation space is formed between two adjacent protrusions, mutual interference between multiple battery cores is avoided, allowing each battery core to complete the formation process in a relatively stable environment, thereby improving the uniformity and consistency of formation quality.

[0012] Furthermore, through the synergistic effect of flexible components and protrusions, the battery core can maintain a stable state during the formation process, ensuring the battery's performance while suppressing battery expansion, which helps reduce internal stress and thus improves battery reliability and consistency.

[0013] In one embodiment, the flexible element is disposed opposite to the formation space.

[0014] During battery formation, a chemical reaction occurs inside the battery, which may generate expansion forces or other mechanical stresses. The flexible components can absorb and disperse these stresses, thereby protecting the battery from damage. In addition, the flexible components can also protect the coding part of the battery, preventing the coding from being damaged by the high temperature during the formation process.

[0015] In one embodiment, the second fixture has retaining edges on opposite sides, the retaining edges extending along the length of the second fixture to support the battery.

[0016] During the battery formation process, the baffles can support the battery, thereby preventing the battery from expanding during formation and suppressing battery displacement, thus improving the dimensional stability and consistency of the battery.

[0017] In one embodiment, the first fixture includes a first positioning element, and the second fixture includes a second positioning element, wherein the first positioning element and the second positioning element are connected in a cooperative manner.

[0018] By connecting the first positioning component and the second positioning component, the precise alignment of the first fixture and the second fixture during assembly can be ensured, guaranteeing that the battery is in the correct position during the formation process, thereby forming a stable battery formation space and avoiding uneven formation or battery damage caused by positional deviation.

[0019] In one embodiment, the first positioning member is configured as one of a pin and a positioning hole, and the second positioning member is configured as the other of a pin and a positioning hole.

[0020] The design of the positioning hole provides a clear assembly position for the pin, which can ensure that the relative positions of the first fixture and the second fixture are accurate during assembly. Furthermore, after the pin is inserted into the positioning hole, it can effectively prevent the first fixture and the second fixture from loosening or shifting during the formation process, thereby ensuring the smooth progress of the formation process.

[0021] Furthermore, by using a pin-guided method, during the pressure formation process of the battery, the first and second fixtures, while squeezing the battery, will not cause defective formed products due to misaligned relative movement caused by the guiding effect of the pin.

[0022] In one embodiment, the surface roughness of the second fixture is ≤0.8.

[0023] The second fixture with a surface roughness ≤0.8 has a relatively smooth surface, which can better fit the battery surface and reduce friction between the second fixture and the battery. During the battery formation process, the battery may expand due to chemical reactions. The low-roughness surface can reduce wear between the battery and the second fixture, thereby ensuring the integrity of the battery. In addition, the low-roughness surface can also transmit pressure evenly, so that the pressure is evenly distributed on the battery, improving the quality of battery formation.

[0024] In one embodiment, the flexible element is configured as silicone. The silicone effectively absorbs and disperses the mechanical stress generated during the formation process. During battery formation, the battery may expand or contract due to chemical reactions; the cushioning effect of the silicone reduces the direct pressure exerted on the battery by the rigid element, thereby protecting the battery from mechanical damage.

[0025] In one embodiment, the protrusion is configured as ceramic.

[0026] Ceramic materials have high hardness and high strength, enabling them to make hard contact with the battery, effectively suppressing the expansion of the battery during the formation process, thereby reducing stress concentration inside the battery and improving the battery's dimensional stability and safety.

[0027] In addition, the ceramic material has the property of a smooth surface, which can avoid the appearance defects caused by friction between the side of the battery and the second fixture during the formation and expansion process, and also prevent the problem of wrinkles on the side of the battery caused by the second fixture not being smooth enough.

[0028] By combining silicone and ceramic materials, the buffering effect of silicone and the uniform contact of ceramic can reduce stress concentration caused by uneven pressure inside the battery. In other words, during the formation process, there is both soft contact of silicone in the first fixture and hard limiting and shaping of ceramic in the second fixture, which ensures the stability and consistency of the battery dimensions after formation.

[0029] In one embodiment, the surface of the second fixture near the first fixture is arc-shaped to accommodate the arc-shaped battery, and the first fixture near the second fixture has an arc-shaped notch to abut against the battery.

[0030] The arc-shaped surface design can perfectly fit the shape of the arc-shaped battery, thereby ensuring good contact between the battery and the fixture throughout the formation process and reducing problems such as poor contact or uneven pressure distribution caused by shape mismatch.

[0031] In one embodiment, the outer surface of the first fixture is provided with an oxide layer for insulation from the external environment; and / or, the outer surface of the second fixture is provided with an oxide layer for insulation from the external environment.

[0032] By setting an oxide layer on the outermost surface of the first and second fixtures, battery defects caused by short circuits can be avoided. Furthermore, since the surfaces of the first and second fixtures undergo hard anodizing treatment, the wear resistance and surface smoothness of the first and second fixtures are improved, thereby ensuring the dimensional stability and consistency of the battery after formation.

[0033] The beneficial effects of the embodiments of this utility model are as follows:

[0034] During the battery formation process, the first and second fixtures are clamped on both sides of the battery. The flexible parts with low hardness can buffer the battery, so that the pressure can be transmitted to the battery stably and evenly during the formation process. The second fixture with higher hardness can make hard contact with the battery, which can suppress the battery expansion and thus ensure the dimensional stability of the battery after formation. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the battery formation fixture provided in an embodiment of this utility model;

[0037] Figure 2 This is a schematic diagram of the battery formation fixture provided in another embodiment of the present invention.

[0038] Figure 3 This is a cross-sectional view of the battery formation fixture provided in an embodiment of this utility model;

[0039] Figure 4 yes Figure 1 The diagram shows the structure of the first fixture in the battery formation fixture shown.

[0040] Figure 5 yes Figure 1 The diagram shows the structure of the second fixture in the battery formation fixture.

[0041] Figure Labels

[0042] 1. Battery formation fixture;

[0043] 100. The first fixture; 101. Notch;

[0044] 200. Second fixture; 201. Body; 202. Protruding portion; 203. Sidewall;

[0045] 300. Flexible components;

[0046] 400, transformed into space;

[0047] 500. First positioning component;

[0048] 600. Second positioning component;

[0049] 700, battery. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0051] Reference Figure 1 and Figure 2 As shown, this utility model embodiment provides a battery 700 formation fixture 1, which includes a first fixture 100, a second fixture 200 and a flexible member 300. The second fixture 200 is disposed opposite to the first fixture 100, and the first fixture 100 and the second fixture 200 are used to clamp the battery 700 on both sides. The flexible member 300 is used to abut between the first fixture 100 and the battery 700, and the hardness of the flexible member 300 is less than the hardness of the second fixture 200.

[0052] During the formation process of battery 700, the first fixture 100 and the second fixture 200 are clamped on both sides of battery 700. The flexible part 300 with low hardness can buffer the battery 700, so that the pressure can be stably and evenly transmitted to the battery 700 during the formation process. The second fixture 200 with higher hardness can make hard contact with the battery 700, which can suppress the expansion of the battery 700, thus ensuring the dimensional stability of the battery 700 after formation.

[0053] In some embodiments, the second fixture 200 includes a body 201 and two protrusions 202. The protrusions 202 protrude from the surface of the body 201 on the side facing the first fixture 100. The two protrusions 202 are spaced apart to form a formation space 400 for embedding the core of the battery 700.

[0054] In some embodiments, the flexible element 300 is disposed opposite to the formation space 400.

[0055] Since an independent core formation space 400 is formed between two adjacent protrusions 202, mutual interference between multiple battery cores 700 is avoided, allowing each battery core 700 to complete the formation process in a relatively stable environment, thereby improving the uniformity and consistency of formation quality.

[0056] Furthermore, through the synergistic effect of the flexible component 300 and the protrusion 202, the battery 700 core can maintain a stable state during the formation process, ensuring the performance of the battery 700 and suppressing the expansion of the battery 700, which helps to reduce the internal stress of the battery 700, thereby improving the reliability and consistency of the battery 700.

[0057] In some embodiments, refer to Figure 3 As shown, the flexible component 300 is positioned opposite the formation space 400 between two adjacent rigid components. During the formation of the battery 700, a chemical reaction occurs inside the battery 700, which may generate expansion forces or other mechanical stresses. The flexible component 300 can absorb and disperse these stresses, thereby protecting the battery 700 from damage. In addition, the flexible component 300 can also protect the coding portion of the battery 700, preventing the coding from being damaged due to the high temperature during the formation process.

[0058] It should also be noted that in this embodiment, the flexible member 300 is used to buffer the core. Therefore, the width of the flexible member 300 is the same as the width of the core forming space 400, and the flexible member 300 is located just above the core forming space 400 to ensure the protection effect on the core.

[0059] In some embodiments, refer to Figure 1 and Figure 2 As shown, the second fixture 200 has flanges 203 on opposite sides, which extend along the length of the second fixture 200 to support the battery 700. During the formation process of the battery 700, the flanges 203 can support the battery 700, thereby preventing the battery 700 from expanding during the formation process and suppressing the displacement of the battery 700, thus improving the dimensional stability and consistency of the battery 700.

[0060] In some embodiments, refer to Figure 4 and Figure 5 As shown, the first fixture 100 includes a first positioning member 500, and the second fixture 200 includes a second positioning member 600. The first positioning member 500 and the second positioning member 600 are connected in a cooperative manner.

[0061] By cooperating and connecting the first positioning member 500 and the second positioning member 600, the first fixture 100 and the second fixture 200 can be precisely aligned during assembly, ensuring that the battery 700 is in the correct position during the formation process, thereby forming a stable battery 700 formation space 400 and avoiding uneven formation or damage to the battery 700 due to positional deviation.

[0062] In some embodiments, refer to Figure 4 and Figure 5 As shown, the first positioning member 500 is configured as one of a pin and a positioning hole, and the second positioning member 600 is configured as the other of a pin and a positioning hole. The positioning hole design provides a clear assembly position for the pin, ensuring that the relative positions of the first fixture 100 and the second fixture 200 are accurate during assembly. Furthermore, after the pin is inserted into the positioning hole, it effectively prevents the first fixture 100 and the second fixture 200 from loosening or shifting during the formation process, thereby ensuring the smooth progress of the formation process.

[0063] Furthermore, by using a pin-guided method, during the pressure formation process of the battery 700, the first fixture 100 and the second fixture 200, while squeezing the battery 700, will not cause defective formed products due to the guiding effect of the pin due to misaligned relative movement.

[0064] In this embodiment, the first positioning member 500 is configured as a positioning hole, and the second positioning member 600 is configured as a pin.

[0065] In some embodiments, the surface roughness of the second fixture 200 is ≤0.8. The surface of the second fixture 200 with a surface roughness ≤0.8 is relatively smooth, allowing for better contact with the surface of the battery 700 and reducing friction between the second fixture 200 and the battery 700. During the battery 700 formation process, the battery 700 may expand due to chemical reactions. The low-roughness surface can reduce wear between the battery 700 and the second fixture 200, thereby ensuring the integrity of the battery 700. Furthermore, the low-roughness surface can also uniformly transmit pressure, ensuring that the pressure is evenly distributed on the battery 700, thus improving the formation quality of the battery 700.

[0066] In some embodiments, the flexible member 300 is configured as silicone. The silicone effectively absorbs and disperses the mechanical stress generated during the formation process. During the formation of the battery 700, the battery 700 may expand or contract due to chemical reactions. The cushioning effect of the silicone can reduce the direct pressure of the rigid member on the battery 700, thereby protecting the battery 700 from mechanical damage.

[0067] In some embodiments, the protrusion 202 is configured as ceramic. The ceramic material has high hardness and high strength, enabling hard contact with the battery 700, effectively suppressing the expansion of the battery 700 during the formation process, thereby reducing stress concentration inside the battery 700 and improving the dimensional stability and consistency of the battery 700.

[0068] In addition, the ceramic material has the property of a smooth surface, which can avoid the appearance defects caused by friction between the side of the battery 700 and the second fixture 200 during the formation and expansion process, and also prevent the problem of wrinkles on the side of the battery 700 caused by the second fixture 200 not being smooth enough.

[0069] By combining silicone and ceramic materials, the buffering effect of silicone and the uniform contact of ceramic can reduce stress concentration caused by uneven pressure inside the battery 700. That is, during the formation process, there is both soft contact of the silicone part in the first fixture 100 and hard limiting and shaping of ceramic in the second fixture 200, which ensures the stability and consistency of the dimensions of the battery 700 after formation.

[0070] In some embodiments, refer to Figure 4 and Figure 5 As shown, the surface of the second fixture 200 near the first fixture 100 is rounded to accommodate the curved battery 700. The first fixture 100 has a rounded recess 101 on the side near the second fixture 200 to abut against the battery 700. This rounded surface design ensures a perfect fit to the shape of the curved battery 700, guaranteeing good contact between the battery 700 and the fixture throughout the formation process and reducing problems such as poor contact or uneven pressure distribution caused by shape mismatch.

[0071] In some embodiments, the outer surface of the first fixture 100 is provided with an oxide layer for insulation from the external environment; the outer surface of the second fixture 200 is also provided with an oxide layer for insulation from the external environment. By providing an oxide layer on the outermost surfaces of the first fixture 100 and the second fixture 200, battery 700 defects caused by short circuits can be avoided. The surfaces of the first fixture 100 and the second fixture 200 undergo hard anodizing treatment, thereby improving the wear resistance and surface smoothness of the first fixture 100 and the second fixture 200, and thus ensuring the dimensional stability and consistency of the battery 700 after formation.

[0072] In summary, in this utility model, the battery 700 is formed using the first fixture 100 and the second fixture 200. The positioning hole and the pin configuration provide clear assembly positions for the first fixture 100 and the second fixture 200, ensuring that the relative positions of the first fixture 100 and the second fixture 200 are accurate during assembly. Furthermore, after the pin is inserted into the positioning hole, it can effectively prevent the first fixture 100 and the second fixture 200 from loosening or shifting during the formation process, thereby ensuring the smooth progress of the formation process.

[0073] Furthermore, the flexible component 300 is disposed on the first fixture 100. The hardness of the flexible component 300 is less than that of the second fixture 200, thereby forming a combination of soft and hard materials. The soft component 300 with lower hardness plays a buffering role for the battery 700 during the formation process, ensuring the uniform transmission of pressure during the formation process. The second fixture 200 with higher hardness plays a supporting role for the battery 700, thereby preventing the battery 700 from expanding and deforming during the formation process, and thus ensuring the consistency of the dimensions of the battery 700 before and after the formation process.

[0074] In addition, the formation space 400 of the independent core is formed between two adjacent protrusions 202, which can also avoid mutual interference between multiple battery 700 cores, so that each battery 700 core can complete the formation process in a relatively stable environment, thereby improving the uniformity and consistency of the battery 700 formation quality.

[0075] The flexible part 300 is configured as silicone, and the protrusion 202 is configured as ceramic. Through the combination of silicone and ceramic materials, the buffering effect of silicone and the uniform contact of ceramic can reduce the stress concentration caused by uneven pressure inside the battery 700. That is, during the formation process, there is both the soft contact of the silicone part in the first fixture 100 and the hard limiting and shaping of ceramic in the second fixture 200, which ensures the stability and consistency of the dimensions of the battery 700 after formation.

[0076] Thus, through the synergistic effect of the flexible component 300 and the protrusion 202, the core of the battery 700 can maintain a stable state during the formation process, ensuring the performance of the battery 700, while suppressing the expansion of the battery 700, which helps to reduce the internal stress of the battery 700, thereby improving the reliability and consistency of the battery 700.

[0077] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery formation fixture, characterized in that, include: The first fixture; The second fixture is disposed opposite to the first fixture, and the first fixture and the second fixture are used to clamp the battery on both sides; as well as, A flexible component is used to abut between the first fixture and the battery, and the hardness of the flexible component is less than that of the second fixture.

2. The battery formation fixture according to claim 1, characterized in that, The second fixture includes a body and two protrusions. The protrusions protrude from the surface of the body facing the first fixture, and the two protrusions are spaced apart to form a formation space for embedding the core of the battery.

3. The battery formation fixture according to claim 2, characterized in that, The flexible component is positioned opposite to the formation space.

4. The battery formation fixture according to claim 1, characterized in that, The second fixture has side rails on opposite sides, which extend along the length of the second fixture to support the battery.

5. The battery formation fixture according to any one of claims 1-4, characterized in that, The first fixture includes a first positioning element, and the second fixture includes a second positioning element, wherein the first positioning element and the second positioning element are connected in a cooperative manner.

6. The battery formation fixture according to claim 5, characterized in that, The first positioning element is configured as one of a pin and a positioning hole, and the second positioning element is configured as the other of a pin and a positioning hole.

7. The battery formation fixture according to claim 1, characterized in that, The surface roughness of the second fixture is ≤0.

8.

8. The battery formation fixture according to claim 1, characterized in that, The flexible component is configured as silicone.

9. The battery formation fixture according to claim 2, characterized in that, The protrusion is configured as ceramic.

10. The battery formation fixture according to claim 1, characterized in that, The surface of the second fixture near the first fixture is arc-shaped to accommodate the arc-shaped battery, and the first fixture near the second fixture has an arc-shaped notch to abut against the battery.

11. The battery formation fixture according to claim 1, characterized in that, The outer surface of the first fixture is provided with an oxide layer for insulation from the external environment; and / or, the outer surface of the second fixture is provided with an oxide layer for insulation from the external environment.

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