Battery top cover, battery and electric equipment
By incorporating multiple first teeth and guide bevels in the battery top cover design, the problem of seal ring misalignment was solved, improving the sealing reliability of the battery top cover and reducing the risk of cell leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-17
AI Technical Summary
During the assembly of the battery top cover, the sealing rings are prone to overlap, leading to sealing failure and inability to be identified, which in turn causes cell leakage in subsequent processes.
In the design of the sealing ring of the battery top cover, multiple first teeth are set to position and limit the sealing ring, prevent its assembly from being misaligned, and improve stability through the guide slope and step structure.
It effectively prevents the sealing ring from misaligning during assembly, improves process reliability, reduces the risk of cell leakage, and ensures sealing performance.
Smart Images
Figure CN224138220U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery processing technology, and in particular to a battery top cover, a battery, and an electrical device. Background Technology
[0002] In related technologies, during the assembly of the battery top cover, such as manual assembly, the lack of a foolproof design can easily lead to the sealing ring overlapping with other structures. If the sealing ring is misaligned, after the pressure ring is pressed down and welded to the terminal post, the overlap of the sealing ring cannot be visually identified, and helium detection cannot identify it. During the subsequent installation of the battery terminal post, the welding process of the connecting piece will cause the sealing ring to be too close to the welding position, resulting in overheating and damage. This can lead to cell leakage in the later stages of the cell manufacturing process. Utility Model Content
[0003] This utility model provides a battery top cover, a battery, and an electrical device to solve at least one of the aforementioned technical problems.
[0004] This utility model provides a battery top cover comprising a top cover assembly, a terminal post, and a sealing ring. The top cover assembly has a terminal post through hole and a first surface and a second surface. Along the thickness direction of the top cover assembly, the first surface and the second surface are disposed opposite to each other. At least a portion of the terminal post passes through the terminal post through hole. The sealing ring is sleeved on the terminal post and located on the side of the second surface of the top cover assembly opposite to the first surface. The sealing ring includes a sealing ring body and a plurality of first teeth. The plurality of first teeth are sequentially protruding along the circumferential direction of the sealing ring body onto the outer surface of the sealing ring body. The sealing ring is configured such that the end of each first tooth away from the sealing ring body abuts against the top cover assembly. The sealing ring body is sleeved on the terminal post, such that the sealing ring is confined between the top cover assembly and the terminal post.
[0005] The aforementioned battery top cover, by setting multiple first teeth, can play a role in positioning and limiting the sealing ring during assembly, making it less likely for the sealing ring to misalign and overlap, thus improving process reliability and reducing the risk of cell leakage due to damage in subsequent processes.
[0006] In one optional technical solution of this utility model, the sealing ring includes a second tooth. Along the circumference of the sealing ring, the plurality of second teeth are spaced apart on the inner surface of the sealing ring body, and the end of each second tooth away from the sealing ring body abuts against the pole post.
[0007] In one optional technical solution of this utility model, the battery top cover includes a lower plastic, which is located on the outer side of the sealing ring body;
[0008] Along the circumference of the sealing ring, the end of each of the first teeth away from the sealing ring body abuts against the lower plastic.
[0009] In one optional technical solution of this utility model, the lower plastic ring forms a retaining end along the inner edge of the ring facing the pole post, and the first tooth abuts against the top cover assembly by abutting against the retaining end;
[0010] Along the axial direction of the through hole of the pole post, the thickness of the abutting end is greater than the thickness of the first tooth.
[0011] In one optional technical solution of this utility model, the battery top cover includes a pressure ring, which is sleeved on the terminal post and located on one side of the second surface of the top cover assembly. The pressure ring includes a pressure ring base and a boss. The boss protrudes from the pressure ring base on the side facing the through hole of the terminal post. The pressure ring abuts against the sealing ring on the side away from the second surface through the boss. The boss and the pressure ring base form a stepped structure. The inner edge of the lower plastic ring facing the terminal post overlaps the outer edge of the boss ring on the pressure ring base.
[0012] In one optional technical solution of this utility model, the top cover assembly includes an upper plastic, a portion of which is located on one side of the first surface of the top cover assembly, and another portion of which is located in the through hole of the pole post and forms a first closed end of the upper plastic. The first closed end is disposed between the pole post and the top cover assembly around the hole axis of the through hole of the pole post.
[0013] There is a gap between the first closed end and the sealing ring along the axial direction of the pole post.
[0014] In one optional technical solution of this utility model, along the axial direction of the through hole of the pole post, the distance between the end of the first closed end facing the sealing ring and the second surface of the top cover assembly is within a first preset range.
[0015] In one optional technical solution of this utility model, the minimum value of the first preset range is 0.1 mm, and the maximum value of the first preset range is 0.5 mm.
[0016] In one optional technical solution of this utility model, the battery top cover includes an upper plastic, a portion of which is located on one side of the first surface of the top cover assembly, and another portion of which passes through the terminal hole and is located on one side of the second surface of the top cover assembly. The portion of the upper plastic located on the side of the second surface of the top cover assembly forms a second closed end of the upper plastic. The portion of the second closed end near the sealing ring has a guide slope. The guide slope is arranged around the axial direction of the upper plastic on the outer side of the ring of the second closed end. The sealing ring can abut against the guide slope through the inner side of the sealing ring body, so that the sealing ring is installed and positioned by the guide slope.
[0017] The present invention provides a battery including the battery top cover described in any of the above-mentioned optional technical solutions.
[0018] The aforementioned battery, by setting multiple first teeth, can play a role in positioning and limiting the sealing ring during assembly, making it less likely for the sealing ring to misalign and overlap, thus improving process reliability and reducing the risk of cell leakage due to damage in subsequent processes.
[0019] The present invention provides an electrical device comprising a battery top cover as described in any of the above optional technical solutions, or a battery as described in the above optional technical solutions.
[0020] The aforementioned electrical equipment, by setting multiple first teeth, can play a role in positioning and limiting the sealing ring during assembly, making it less likely for the sealing ring to misalign and overlap, thus improving process reliability and reducing the risk of cell leakage due to damage in subsequent processes.
[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0022] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0023] Figure 1 This is a partial structural schematic diagram of the battery top cover according to an embodiment of the present utility model;
[0024] Figure 2 This is a schematic diagram of another part of the structure of the battery top cover according to an embodiment of the present utility model;
[0025] Figure 3 yes Figure 2 Enlarged view of section I;
[0026] Figure 4 This is a schematic diagram of another part of the structure of the battery top cover according to an embodiment of the present utility model;
[0027] Figure 5 This is a schematic diagram of another part of the structure of the battery top cover according to an embodiment of the present utility model;
[0028] Figure 6 This is a three-dimensional schematic diagram of the pressure ring according to an embodiment of the present utility model;
[0029] Figure 7 This is a schematic diagram of another part of the structure of the battery top cover according to an embodiment of the present utility model;
[0030] Figure 8 This is a schematic diagram of the battery structure according to an embodiment of the present invention;
[0031] Figure 9 This is a schematic diagram of the electrical equipment according to an embodiment of the present invention.
[0032] Explanation of key component symbols:
[0033] Battery top cover 10, first surface 101, second surface 102, top cover assembly 11, connecting piece 110, terminal through hole 111, terminal 12, sealing ring 13, sealing ring body 130, first tooth 131, second tooth 132, rounded corner 1321, lower plastic 14, supporting end 141, pressure ring 15, pressure ring base 151, boss 152, receiving space 153, pressure ring through hole 154, upper plastic 16, first closed end 161, second closed end 162, guide slope 17;
[0034] Battery 100; Cell 18;
[0035] 200 electrical devices. Detailed Implementation
[0036] In the description of this utility model, some of the disclosed content has been shown accordingly in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description with reference to the accompanying drawings is exemplary and is only used to explain this utility model, and should not be construed as limiting this utility model.
[0037] In the description of this utility model, many different contents or examples are disclosed to implement different structures of this utility model. In order to simplify the disclosure of this utility model, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this utility model.
[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0039] In the description of this utility model, it should be understood that the terms used to indicate orientation or positional relationship (such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc.) are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and understanding the corresponding embodiments, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to indicate orientation or positional relationship should not be construed as limitations on this utility model.
[0040] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0042] Furthermore, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various situations and / or settings discussed.
[0043] Please refer to Figure 1The present invention provides a battery top cover 10, which may include a top cover assembly 11, a terminal post 12 and a sealing ring 13.
[0044] The top cover assembly 11 may have a pole post through hole 111. The top cover assembly 11 may have a first surface 101 and a second surface 102. Along the thickness direction of the top cover assembly 11, the first surface 101 and the second surface 102 may be arranged opposite to each other. At least a portion of the pole post 12 may pass through the pole post through hole 111. A sealing ring 13 may be fitted onto the pole post 12 and located on the side of the second surface 102 of the top cover assembly 11 opposite to the first surface 101.
[0045] The sealing ring 13 may include a sealing ring body 130 and a plurality of first teeth 131. The plurality of first teeth 131 are sequentially protruding from the outer surface of the sealing ring body 130 along the circumference of the sealing ring body 130.
[0046] The sealing ring 13 is configured such that the end of each first tooth 131 away from the sealing ring body 130 abuts against the top cover assembly 11, and the sealing ring body 130 is sleeved on the pole post 12, such that the sealing ring 13 is defined between the top cover assembly 11 and the pole post 12.
[0047] The battery top cover 10 described above, by setting multiple first teeth 131, can play a role in positioning and limiting the sealing ring 13 when assembling the sealing ring 13, so that the sealing ring 13 is not easy to be misaligned and overlapped, thereby improving the reliability of the manufacturing process and reducing the risk of cell leakage due to damage in subsequent processes.
[0048] Specifically, in Figure 1 In this assembly, the top cover assembly 11 may include a connecting piece 110. The thickness direction of the top cover assembly 11 may be parallel to the A1 and A2 directions. A first surface 101 is the side of the top cover assembly 11 facing the A1 direction. A second surface 102 is the side of the top cover assembly 11 facing the A2 direction. A pole post through hole 111 may be formed on the connecting piece 110 along the A1 and A2 directions. A pole post 12 may move from one side of the top cover assembly 11 along the A1 direction along the A2 direction and pass through the pole post through hole 111, such that one end of the pole post 12 along the A2 direction protrudes from the pole post through hole 111.
[0049] exist Figure 1 In this structure, the sealing ring body 130 can be formed into a ring shape around the axis L, and the pole post 12 can pass through the hole on the inner side of the sealing ring body 130. A plurality of first teeth 131 can be arranged on the side wall of the inner side of the sealing ring body 130 around the axis L.
[0050] With the multiple first teeth 131 facing the outer side of the sealing ring 13, the sealing ring 13 can be held against the structure on the top cover assembly 11 near the outer side of the sealing ring body 130 by the multiple first teeth 131. This allows the inner side wall of the sealing ring body 130 to be held against the pole post 12. In this way, the multiple first teeth 131 can both cooperate to hold the sealing ring 13 against the pole post 12 to play a positioning role in assembling the sealing ring 13 onto the pole post 12, and also restrict the movement space of the sealing ring 13, so that the sealing ring 13 is not easy to loosen after assembly.
[0051] It is understandable that by setting multiple first teeth 131, since the first teeth 131 have the functions of limiting and guiding positioning, they can provide guidance for the assembly personnel when manually assembling the sealing ring 13, thereby playing a role in preventing mistakes and improving installation stability.
[0052] Furthermore, in the scenario where the battery top cover 10 is used for the battery 100, the connecting piece 110 can form an electrical connection with other structures of the battery 100 (such as battery cells). The connecting piece 110 can be a plain aluminum sheet.
[0053] Please refer to Figure 2 In this invention, the sealing ring 13 may include second teeth 132. Along the circumference of the sealing ring 13, a plurality of second teeth 132 may be spaced apart on the inner surface of the sealing ring body 130. The end of each second tooth 132 away from the sealing ring body 130 abuts against the pole post 12.
[0054] This facilitates the positioning of the sealing ring 13 during assembly and improves the fixing effect of the sealing ring 13 on the battery top cover 10.
[0055] Specifically, in Figure 2 In this design, the side of the sealing ring body 130 facing the axis L can be the inner side of the ring of the sealing ring body 130. Multiple second teeth 132 are spaced apart around the axis L on the sidewall of the inner side of the sealing ring body 130. The multiple second teeth 132 can be equidistantly spaced on the sealing ring body 130, so that when one of the second teeth 132 contacts the pole post 12 and applies a force to it, the pole post 12 can use the other second teeth 132 as supports to counteract this force. This allows the multiple second teeth 132 to cooperate and abut against the pole post 12, achieving the effect of fixing the sealing ring 13 to the pole post 12.
[0056] Moreover, due to the presence of the second tooth 132, the second tooth 132 itself can play a positioning role when assembling the sealing ring 13, making it less likely that the sealing ring 13 will be misaligned when assembled on the pole post 12.
[0057] Please refer to Figure 3In this utility model, the second tooth 132 is provided with rounded corners 1321 at both ends along the circumference of the sealing ring 13.
[0058] This makes the second tooth 132 less prone to wear.
[0059] Specifically, the circumferential direction of the sealing ring 13 can be the direction formed around the axis L. Figure 3 In this context, the circumferential direction of the sealing ring 13 can be represented as B1. The two ends of the second tooth 132 along the circumferential direction of the sealing ring 13 can be rounded to form a fillet 1321.
[0060] Please combine Figure 3 It is understandable that when the sealing ring 13 is assembled, since the sealing ring 13 contacts the pole post 12 through the second tooth 132, when the sealing ring 13 moves relative to the pole post 12 in the B1 direction, the sealing ring 13 will contact the pole post 12 through the rounded corner 1321. The rounded corner 1321 can disperse the stress received through the contact, so that the two ends of the second tooth 132 are not prone to stress concentration, thereby making the first tooth 132 less prone to wear.
[0061] Please refer to Figure 4 and Figure 5 In this invention, the top cover assembly 11 may include a lower plastic 14. The lower plastic 14 may be located on the outer side of the sealing ring body 130. Along the circumference of the sealing ring 13, the end of each first tooth 131 away from the sealing ring body 130 may abut against the lower plastic 14.
[0062] This facilitates the positioning of the sealing ring 13 during assembly and improves the fixing effect of the sealing ring 13 on the battery top cover 10.
[0063] Specifically, in Figure 5 In this design, the side of the sealing ring body 130 facing away from the axis L can be the outer ring of the sealing ring body 130. Multiple first teeth 131 are spaced apart on the sealing ring body 130 around the axis L. These multiple first teeth 131 can be equidistantly spaced on the sealing ring body 130. Thus, when one of the first teeth 131 contacts the lower plastic 14 and experiences a force from the lower plastic 14, this force can be counteracted by the other first teeth 131 contacting and supporting other parts of the lower plastic 14. This allows the multiple first teeth 131 to cooperate and abut against the lower plastic 14, achieving the effect of fixing the sealing ring 13 to the top cover assembly 11.
[0064] Moreover, due to the presence of the first tooth 131, the first tooth 131 itself can play a positioning role when assembling the sealing ring 13, making it less likely that the sealing ring 13 will be misaligned on the top cover assembly 11.
[0065] Please refer to Figure 4 and Figure 5 In this invention, the inner edge of the lower plastic 14 facing the pole post 12 can form a retaining end 141. The first tooth 131 abuts against the retaining end 141 to abut against the top cover assembly 11. Along the axial direction of the pole post through hole 111, the thickness of the retaining end 141 can be greater than the thickness of the first tooth 131.
[0066] This improves the stability of the sealing ring 13 when it comes into contact with the lower plastic 14.
[0067] Specifically, please combine Figure 4 and Figure 5 ,exist Figure 4 In this design, the supporting end 141 and the first tooth 131 can each have their own thickness along the A1 and A2 directions, respectively. When the thickness of the supporting end 141 is greater than the thickness of the first tooth 131, along the A1 direction, the height of the side of the first tooth 131 along the A2 direction will be higher than the height of the side of the supporting end 141 along the A2 direction. That is, the end of the first tooth 131 can fully contact the supporting end 141, and will not allow part of the end of the first tooth 131 to be suspended without contacting the supporting end 141. This helps to increase the frictional force applied by the lower plastic 14 when the sealing ring 13 moves along the A2 direction, making it less likely for the sealing ring 13 to detach when it is in contact with the lower plastic 14.
[0068] In addition, the portion of the lower plastic 14 near the electrode post 12 can be folded, and the folded lower plastic 14 near the electrode post 12 will form a supporting end 141. For the lower plastic 14, the supporting end 141 can be thickened so that the thickness of the supporting end 141 is greater than the thickness of the first tooth 131.
[0069] Please refer to Figure 4 and Figure 6 In this invention, the battery top cover 10 may include a retaining ring 15. The retaining ring 15 may be sleeved on the terminal post 12 and located on the side where the second surface 102 of the top cover assembly 11 is located. The retaining ring 15 may include a retaining ring base 151 and a boss 152. The boss 152 may protrude from the retaining ring base 151 on the side facing the terminal post through hole 111. The retaining ring 15 may abut against the sealing ring 13 on the side away from the second surface 102 through the boss 152. The boss 152 and the retaining ring base 151 may form a stepped structure. The inner edge (or abutting end 141) of the lower plastic 14 facing the terminal post 12 may overlap the retaining ring base on the outer side of the boss 152.
[0070] In this way, the assembly of the pressure ring 15 can be avoided due to the lower plastic 14 being too thick.
[0071] Specifically, in Figure 4 and Figure 6In this design, the pressure ring 15 may have a pressure ring through hole 154. The pressure ring through hole 154 is formed by sequentially passing through the boss 152 and the pressure ring base 151. The pressure ring 15 can move along the A1 direction, so that the portion of the pole post 12 that protrudes from the pole post through hole 111 can pass through the pressure ring through hole 154, allowing the pressure ring 15 to be fixed to the pole post 12. When the pressure ring 15 is fixedly connected to the pole post 12, the sealing ring body 130 can be located between the top cover assembly 11 and the boss 152, so that the pressure ring 15 can cooperate with the top cover assembly 11 to press and fix the sealing ring 130.
[0072] Please combine Figure 4 The boss 152 and the pressure ring base 151 form a stepped structure, which makes the outer diameter of the outer edge of the boss 152 around the axis L smaller than the outer diameter of the outer edge of the pressure ring base 151 around the axis L. This results in a certain space being formed on one side of the pressure ring base 151 near the outer ring of the pressure ring 15 along the A1 direction. This space is the accommodating space 153.
[0073] Understandable, Figure 4 In the case of increased thickness of the supporting end 141, the pressure ring 15 needs to press against the sealing ring 13, which can easily cause structural limitation between the pressure ring 15 and the supporting end 141. By setting the boss 152 and the pressure ring base 151 into a stepped structure, the supporting end 141 can overlap the pressure ring base 151 within the receiving space 153. That is, the increased thickness of the supporting end 141 is accommodated within the receiving space 153, so that structural limitation does not occur between the pressure ring 15 and the supporting end 141. This avoids the situation where the increased thickness of the supporting end 141 affects the assembly of the pressure ring 15.
[0074] Please refer to Figure 4 In this invention, the battery top cover 10 may include an upper plastic 16. A portion of the upper plastic 16 may be located on the side where the first surface 101 of the top cover assembly 11 is located. Another portion of the upper plastic 16 may be located within the terminal through hole 111 and form a first closed end 161 of the upper plastic 16. The first closed end 161 may be disposed between the terminal 12 and the top cover assembly 11 around the hole axis of the terminal through hole 111. A gap may be present between the first closed end 161 and the sealing ring 13 along the axial direction of the terminal 12.
[0075] This reduces the likelihood of the sealing ring 13 overlapping with the upper plastic 16.
[0076] It is understood that by setting a gap along the axial direction of the pole post 12 between the first closed end 161 and the sealing ring 13, the sealing ring 13 is less likely to come into contact with the first closed end 161 when it is assembled, thus making it less likely that the sealing ring 13 will overlap on the upper plastic 16.
[0077] Please refer to Figure 4 In this invention, along the axial direction of the pole through hole 111, the distance between the end of the first closed end 161 facing the sealing ring 13 and the second surface 102 of the top cover assembly 11 can be within a first preset range.
[0078] This further reduces the likelihood of the sealing ring 13 overlapping with the upper plastic 16 during assembly.
[0079] Specifically, in Figure 4 In the middle, the upper plastic 16 has two ends along the A1 direction and the A2 direction respectively. One end of the upper plastic 16 along the A1 direction is located on one side of the top cover assembly 11 along the A1 direction. The other end of the upper plastic 16 along the A2 direction is located inside the pole post through hole 111.
[0080] Please combine Figure 4 It can be understood that the first closed end 161 is located entirely within the pole post through hole 111, and the distance between the first closed end 161 and the second surface 102 is numerically limited. This ensures that the first closed end 161 will not protrude from the pole post through hole 111. As for the sealing ring 13, it needs to be inserted into the pole post through hole 111 in extreme cases to contact the upper plastic 16. This means that the sealing ring 13 will basically not contact the upper plastic 16 during normal assembly, which helps to reduce the occurrence of the sealing ring 13 overlapping on the upper plastic 16.
[0081] In this invention, the minimum value of the first preset range is 0.1 mm, and the maximum value of the first preset range is 0.5 mm.
[0082] Specifically, the minimum value of the first preset range is 0.1 mm, meaning the distance between the first closed end 161 and the second surface 102 will not be less than 0.1 mm, thus clearly defining the structural dimensional relationship between the upper plastic 16 and the top cover assembly 11 in the actual structure; the maximum value of the first preset range is 0.5 mm, meaning the distance between the first closed end 161 and the second surface 102 will not be greater than 0.5 mm, thus preventing the upper plastic 16 from detaching from the pole post through hole 111 due to the first closed end 161 being too short.
[0083] Please refer to Figure 7 In this invention, the battery top cover 10 may include an upper plastic 16. A portion of the upper plastic 16 is located on the side where the first surface 101 of the top cover assembly 11 is located. Another portion of the upper plastic passes through the terminal post through hole 111 and is located on the side where the second surface 102 of the top cover assembly 11 is located.
[0084] The portion of the upper plastic on the side where the second surface 102 of the top cover assembly 11 is located forms the second closed end 162 of the upper plastic 16. The portion of the second closed end 162 near the sealing ring 13 may have a guide ramp 17. The guide ramp 17 is disposed axially around the upper plastic 16 on the outer side of the ring of the second closed end 162. The sealing ring 13 can be held against the guide ramp 17 by the inner side of the sealing ring body 130, so that the sealing ring 13 is positioned and installed by the guide ramp 17.
[0085] In this way, the sealing ring 13 can be installed and positioned.
[0086] Specifically, in Figure 7 In the middle, the upper plastic 16 has two ends along the A1 direction and the A2 direction respectively. One end of the upper plastic 16 along the A1 direction is located on one side of the top cover assembly 11 along the A1 direction. The other end of the upper plastic 16 along the A2 direction can pass through the pole post through hole 111 and form a second closed end 162.
[0087] exist Figure 7 In this design, the side of the second closed end 162 facing away from the axis can be chamfered, forming a guide slope 17 on the second closed end 162. It can be understood that when assembling the sealing ring 13, since the second closed end 162 is located outside the pole post through hole 111, the sealing ring 13 can easily contact the second closed end 162. At this time, the guide slope 17 will face the sealing ring 13, allowing the sealing ring 13 to move on the guide slope 17 and contact and connect with the top cover assembly 11, thereby achieving the effect of guiding the installation and positioning of the sealing ring 13 through the guide slope 17.
[0088] Moreover, during the assembly process, due to the setting of the guide slope 17, the sharp edge on the second closed end 162 is located away from the sealing ring 13, making it less likely for the sharp edge on the second closed end 162 to hook onto the sealing ring 13, thereby reducing the occurrence of the sealing ring 13 overlapping on the upper plastic 16.
[0089] Please refer to Figure 8 This utility model provides a battery 100. The battery 100 may include the battery top cover 10 of this utility model.
[0090] The battery 100 described above, by setting multiple first teeth 131, can play a role in positioning and limiting the sealing ring 13 when assembling the sealing ring 13, so that the sealing ring 13 is not easy to be misaligned and overlapped, thereby improving the reliability of the manufacturing process, ensuring the sealing effect of the sealing ring 13 between the top cover assembly 11 and the terminal post 12, and thus reducing the risk of cell leakage due to damage in subsequent processes.
[0091] Specifically, in some cases, the battery 100 may include a cell 18. The cell 18 may be mounted on the battery top cover 10 on one side along the A3 direction and may be electrically connected to the terminal post 12. This reduces the possibility of misalignment of the sealing ring 13 and overlap between the sealing ring 13 and other structures during battery assembly, thereby ensuring the sealing reliability of the sealing ring 13 on the battery top cover 10 and preventing electrolyte leakage during subsequent cell manufacturing processes.
[0092] Please refer to Figure 9 This utility model provides an electrical device 200. The electrical device 200 may include the battery top cover 10 or the battery 100 of this utility model.
[0093] The aforementioned electrical equipment 200, by setting multiple first teeth 131, can play a role in positioning and limiting the sealing ring 13 during assembly, making it less likely for the sealing ring 13 to be misaligned and overlapped, thereby improving process reliability, ensuring the sealing effect of the sealing ring 13 between the top cover assembly 11 and the pole post 12, and thus reducing the risk of cell leakage due to damage in subsequent processes.
[0094] Specifically, the electrical equipment 200 can be a vehicle, an instrument or equipment used for manufacturing or surveying, or a mobile electronic terminal.
[0095] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to the embodiments of the present invention without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A battery top cover characterized by, The battery top cover includes: A top cover assembly having a through-hole for a pole post, the top cover assembly having a first surface and a second surface, the first surface and the second surface being disposed opposite to each other along the thickness direction of the top cover assembly; The electrode post, at least a portion of which passes through the electrode post through-hole; and A sealing ring is sleeved on the pole post and located on the side of the second surface of the top cover assembly that is opposite to the first surface. The sealing ring includes a sealing ring body and a plurality of first teeth, which are sequentially protruding from the outer surface of the sealing ring body along the circumference of the sealing ring body. The sealing ring is configured such that one end of each first tooth away from the sealing ring body abuts against the top cover assembly, and the sealing ring body is sleeved on the pole post, such that the sealing ring is confined between the top cover assembly and the pole post.
2. The battery header of claim 1, wherein, The sealing ring includes a second tooth. Along the circumference of the sealing ring, the plurality of second teeth are spaced apart on the inner surface of the sealing ring body, and the end of each second tooth away from the sealing ring body abuts against the pole post.
3. The battery header of claim 1, wherein, The top cover assembly includes a lower plastic layer located on the outer side of the sealing ring body; Along the circumference of the sealing ring, the end of each of the first teeth away from the sealing ring body abuts against the lower plastic.
4. The battery header of claim 3, wherein, The lower plastic ring forms a retaining end along the inner edge of the pole post, and the first tooth abuts against the retaining end to abut against the top cover assembly; Along the axial direction of the through hole of the pole post, the thickness of the abutting end is greater than the thickness of the first tooth.
5. The battery header of claim 3, wherein, The battery top cover includes a pressure ring, which is sleeved on the terminal post and located on the side where the second surface of the top cover assembly is located. The pressure ring includes a pressure ring base and a boss. The boss protrudes from the pressure ring base on the side facing the terminal post through hole. The pressure ring abuts against the sealing ring on the side away from the second surface through the boss. The boss and the pressure ring base form a stepped structure, and the inner edge of the lower plastic ring facing the pole overlaps the outer edge of the boss ring on the pressure ring base.
6. The battery header of claim 1, wherein, The battery top cover includes an upper plastic, a portion of which is located on one side of the first surface of the top cover assembly, and another portion of which is located inside the terminal through hole and forms a first closed end of the upper plastic. The first closed end is disposed between the terminal and the top cover assembly around the hole axis of the terminal through hole. There is a gap between the first closed end and the sealing ring along the axial direction of the pole post.
7. The battery header of claim 6, wherein, Along the axial direction of the through hole of the pole post, the distance between the end of the first closed end facing the sealing ring and the second surface of the top cover assembly is within a first preset range.
8. The battery top cover according to claim 7, characterized in that, The minimum value of the first preset range is 0.1 mm, and the maximum value of the first preset range is 0.5 mm.
9. The battery cover of claim 1 or 2, wherein, The battery top cover includes an upper plastic layer, a portion of which is located on one side of the first surface of the top cover assembly, and another portion of which passes through the terminal post through-hole and is located on one side of the second surface of the top cover assembly. The portion of the upper plastic located on the side of the second surface of the top cover assembly forms the second closed end of the upper plastic. The portion of the second closed end near the sealing ring has a guide slope. The guide slope is arranged around the axial direction of the upper plastic on the outer side of the second closed end. The sealing ring can abut against the guide slope through the inner side of the sealing ring body, so that the sealing ring is installed and positioned through the guide slope.
10. A battery, characterized by The battery includes the battery top cover as described in any one of claims 1-9.
11. An electrical device, characterized by The electrical device includes the battery top cover as described in any one of claims 1-9, or the battery as described in claim 10.