A cover plate and a fully sealed electromagnetic shielding structure applied to a battery, a capacitor or a super capacitor

Abstract

The utility model discloses a kind of cover plate and full-sealed electromagnetic shielding structure applied to battery, capacitor or super capacitor, the cover plate is cooperated with the shell of battery, capacitor or super capacitor and forms full-sealed electromagnetic shielding structure, the cover plate includes end cap, positive and negative pole guide needle and insulating part;The end cap is equipped with through hole, the positive and negative pole guide needle is worn in the through hole, the insulating part is closely attached between the end cap and positive and negative pole guide needle;The upper and lower end surface of the insulating part is kept level with the upper and lower surface of end cap.The cover plate structure of the utility model is reasonable in design, by the cooperation of end cap, positive and negative pole guide needle and insulating part, can form full-sealed electromagnetic shielding structure with shell, effectively block outside electromagnetic interference into equipment interior, prevent electromagnetic leakage generated in the process of equipment operation simultaneously, improve the electromagnetic compatibility of equipment, ensure that equipment is stable in complex electromagnetic environment Run;And the structure of each component is simple, easy to process and assemble, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery, capacitor or supercapacitor technology, and in particular to a cover plate and a fully sealed electromagnetic shielding structure for use in batteries, capacitors or supercapacitors. Background Technology

[0002] Batteries, capacitors, and supercapacitors are increasingly widely used in modern electronic devices and energy storage systems. With the continuous improvement of electronic device integration and the increasingly stringent requirements for electromagnetic compatibility, the electromagnetic interference (EMI) problems generated by these energy storage components during operation are becoming increasingly prominent. At the same time, external electromagnetic interference can also adversely affect the performance and stability of batteries, capacitors, or supercapacitors. To reduce electromagnetic interference and improve the reliability and stability of equipment, higher requirements are placed on the electromagnetic shielding performance of batteries, capacitors, and supercapacitors.

[0003] Traditional cover structures for batteries, capacitors, or supercapacitors have limitations in achieving electromagnetic shielding. On one hand, the seal between the cover and the outer casing is often poor, failing to create an effective electromagnetic shielding space and allowing electromagnetic interference to easily leak or enter. On the other hand, the insulation and fixing methods between the conductive components inside the cover and other components are inadequate, affecting the overall performance and reliability of the cover, and consequently impacting the normal operation of the battery, capacitor, or supercapacitor. Therefore, there is an urgent need for a novel cover and a fully sealed electromagnetic shielding structure that can effectively solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a cover plate and a fully sealed electromagnetic shielding structure for use in batteries, capacitors, or supercapacitors, to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: The first aspect of this utility model provides a cover plate for use in batteries, capacitors, or supercapacitors. The cover plate cooperates with the outer shell of the battery, capacitor, or supercapacitor to form a fully sealed electromagnetic shielding structure. The cover plate includes an end cap, positive and negative electrode pins, and an insulating component. The end cap has a through hole, through which the positive and negative electrode pins pass. The insulating component is tightly fitted between the end cap and the positive and negative electrode pins to seal the through hole. The upper and lower end faces of the insulating component are flush with the upper and lower surfaces of the end cap.

[0005] Furthermore, the insulating component is made of ceramic or glass material and is formed between the end cap and the positive and negative electrode pins by hot melting to achieve a tight fit.

[0006] Furthermore, the insulating component has a cylindrical ring structure, with its inner ring surface tightly fitted to the positive and negative electrode pins, and its outer ring surface tightly fitted to the end cap.

[0007] Furthermore, the end cap is made of a metallic material, including but not limited to any one of aluminum, copper, and stainless steel.

[0008] Furthermore, the positive and negative electrode leads are made of metallic materials, including but not limited to any one of aluminum, copper, and stainless steel.

[0009] Furthermore, the positive and negative electrode leads include a lead-out end and a welding end, which are distributed on the upper and lower sides of the end cap. The welding end is used to weld to the tabs of a battery, capacitor, or supercapacitor.

[0010] Furthermore, the lead-out end has a cylindrical or rhomboid structure, and the welding end has a flat, thin sheet structure.

[0011] The second aspect of this utility model provides a fully sealed electromagnetic shielding structure for a battery, capacitor, or supercapacitor, including a housing and a cover plate as described above, wherein the cover plate and the housing are closed to form a fully sealed electromagnetic shielding structure.

[0012] The beneficial effects of this utility model are as follows: The cover plate structure of this utility model is reasonably designed. Through the cooperation of the end cover, positive and negative electrode guide pins and insulating parts, it can form a fully sealed electromagnetic shielding structure with the shell of the battery, capacitor or supercapacitor, effectively blocking external electromagnetic interference from entering the equipment. At the same time, it prevents electromagnetic leakage generated during the operation of the equipment, improves the electromagnetic compatibility of the equipment, and ensures the stable operation of the equipment in complex electromagnetic environments. Moreover, the structure of each component is simple, and it is easy to process and assemble during the manufacturing process, which helps to reduce production costs and improve production efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in 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.

[0014] Figure 1 This is a schematic diagram of the cover plate structure of Embodiment 1 of this utility model.

[0015] Figure 2 This is a cross-sectional view of the cover plate of Embodiment 1 of this utility model.

[0016] Figure 3 This is a cross-sectional view of the fully sealed electromagnetic shielding structure of Embodiment 1 of this utility model.

[0017] Figure 4 This is a schematic diagram of the cover plate structure of Embodiment 2 of this utility model.

[0018] Figure 5 This is a schematic diagram of the cover plate structure of Embodiment 3 of this utility model.

[0019] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0024] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] Example 1: like Figure 1 and Figure 2 As shown, a cover plate 1 is used in batteries, capacitors, or supercapacitors. The cover plate 1 cooperates with the outer casing 2 of the battery, capacitor, or supercapacitor to form a fully sealed electromagnetic shielding structure. The cover plate 1 includes an end cap 11, positive and negative electrode pins 12, and an insulating member 13. The positive and negative electrode pins 12 include a positive electrode pin and a negative electrode pin. The end cap 11 has two through holes 111, and the positive and negative electrode pins 12 are inserted one-to-one into the through holes 111. The insulating member 13 is tightly fitted between the end cap 11 and the positive and negative electrode pins 12 to seal the through holes 111; the upper and lower end faces of the insulating member 13 are flush with the upper and lower surfaces of the end cap 11.

[0027] In its specific implementation, this application discloses a cover plate 1 structure suitable for batteries, capacitors, and supercapacitors. When the cover plate 1 is fitted with the corresponding device housing 2, it can construct a fully sealed electromagnetic shielding system, effectively blocking the influence of external electromagnetic interference on internal components and preventing the leakage of internal electromagnetic signals, thus meeting the stable operation requirements of electronic equipment in complex electromagnetic environments. Specifically, the cover plate 1 mainly consists of an end cap 11, positive and negative electrode guide pins 12, and an insulating component 13. The end cap 11, as the main supporting component of the cover plate 1, is integrally formed from a high-strength metal material with good electromagnetic shielding performance, and its surface undergoes a special process to enhance its oxidation and corrosion resistance. A high-precision circular through hole 111 is provided in the center of the end cap 11, the diameter of which is precisely calculated to ensure a tight fit with the positive and negative electrode guide pins 12. The positive and negative electrode guide pins 12 are made of a highly conductive alloy material with a special coating to improve conductivity and wear resistance. The positive and negative electrode guide pins 12 are precisely and vertically inserted into the through-hole 111. A special press-fitting process ensures a stable electrical connection and mechanical strength between the guide pins and the end cap 11, enabling power transmission while also serving as an important component of the electromagnetic shielding structure. The shape of the insulating component 13 is highly compatible with the mating parts of the end cap 11 and the positive and negative electrode guide pins 12, tightly filling the gap between them. Through precise tolerance control and surface treatment technology, a gapless insulating sealing layer is formed between them. Notably, the upper and lower end faces of the insulating component 13 are completely flush with the upper and lower surfaces of the end cap 11. This design not only ensures the overall flatness of the cover plate 1, facilitating subsequent sealing assembly with the outer shell 2, but also effectively avoids stress concentration and electromagnetic leakage risks caused by height differences, ensuring reliable insulation between the positive and negative electrode guide pins 12 and the end cap 11, greatly reducing the risk of short circuits and improving equipment safety. It should be noted that in this embodiment, both the through hole 111 and the insulating component 13 are provided in pairs, so that the positive and negative leads in the positive and negative leads 12 are individually insulated and sealed; the way the through hole 111 and the insulating component 13 are set is also the main difference between this embodiment and embodiments two and three.

[0028] The cover plate 1 of this application has a reasonable structural design. Through the cooperation of the end cover 11, positive and negative electrode guide pins 12 and insulating parts 13, it can form a fully sealed electromagnetic shielding structure with the outer shell 2 of the battery, capacitor or supercapacitor, effectively blocking external electromagnetic interference from entering the equipment. At the same time, it prevents electromagnetic leakage generated during the operation of the equipment, improves the electromagnetic compatibility of the equipment, and ensures the stable operation of the equipment in complex electromagnetic environments. Moreover, the structure of each component is simple, and it is easy to process and assemble during the manufacturing process, which helps to reduce production costs and improve production efficiency.

[0029] The insulating component 13 is made of ceramic or glass material and is formed between the end cap 11 and the positive and negative electrode pins 12 by hot melting to achieve a tight fit.

[0030] In the specific implementation process of this application, see [link / reference]. Figure 1 and Figure 2 The insulating component 13 uses high-purity alumina ceramic or alkali-free borosilicate glass as the substrate and is integrally formed between the end cap 11 and the positive and negative electrode leads 12 through a high-temperature hot-melt process. During the forming process, the ceramic / glass raw materials are heated to their softening point (approximately 1600-1800℃ for ceramics and approximately 800-1000℃ for glass), utilizing the material's fluidity to penetrate into the micropores of the leads and end cap 11, forming a molecular-level bonding interface after cooling. This process achieves a tight fit and seamless connection between the insulating component 13, the end cap 11, and the leads, forming a highly airtight sealing structure. This not only significantly improves insulation performance but also enhances the overall mechanical stability of the structure, effectively preventing component loosening or insulation failure caused by vibration or temperature changes. Simultaneously, the ceramic or glass materials also possess excellent insulation properties, effectively preventing short circuits between the positive and negative electrode leads 12 and the end cap 11.

[0031] The insulating component 13 has a cylindrical ring structure, with its inner ring surface tightly fitted to the positive and negative electrode leads 12, and its outer ring surface tightly fitted to the end cap 11.

[0032] In the specific implementation process of this application, see [link / reference]. Figure 1 and Figure 2 The insulating component 13 adopts a cylindrical ring structure design, with its inner ring surface forming a precise and tight fit with the positive and negative electrode guide pins 12, while the outer ring surface seamlessly connects with the end cap 11. This structural design can evenly distribute the pressure and stress borne by the insulating component 13, effectively improving insulation performance and sealing effect, and ensuring the stability and safety of the product under complex working conditions.

[0033] The end cap 11 is made of a metal material, including but not limited to any one of aluminum, copper and stainless steel.

[0034] In the specific implementation of this application, the end cap 11 is made of metal, preferably aluminum, copper, or stainless steel. Such metals not only have excellent electrical conductivity, enabling the construction of an efficient electromagnetic shielding system, but also possess outstanding mechanical strength, effectively ensuring the structural stability and durability of the cover plate 1.

[0035] The positive and negative electrode leads 12 are made of metallic materials, including but not limited to any one of aluminum, copper and stainless steel.

[0036] In the specific implementation of this application, the positive and negative electrode leads 12 are made of metallic materials, including but not limited to aluminum, copper, and stainless steel. As a core conductive component of a battery, capacitor, or supercapacitor, metallic materials can effectively ensure excellent conductivity and guarantee the stability and efficiency of current transmission.

[0037] The positive and negative electrode leads 12 include lead-out end 121 and welding end 122. Lead-out end 121 and welding end 122 are distributed on the upper and lower sides of end cap 11. Welding end 122 is used to weld to the tabs of batteries, capacitors or supercapacitors.

[0038] In the specific implementation process of this application, see [link / reference]. Figure 1 and Figure 2 The positive and negative electrode leads 12 include an outlet end 121 located above the end cap 11 and a welding end 122 located below the end cap 11. The welding end 122 is connected to the tabs of the battery, capacitor or supercapacitor by laser welding or resistance welding. This design effectively avoids the risk of breakage caused by stress concentration during the welding process of traditional integrated leads.

[0039] The lead-out end 121 has a cylindrical or rhomboid structure, and the welding end 122 has a flat thin sheet structure.

[0040] In the specific implementation process of this application, see [link / reference]. Figure 1 and Figure 2 The lead-out terminal 121 can be designed as a cylindrical or rhomboid structure according to actual application requirements. The cylindrical structure is suitable for external circuit interfaces that require rotational mating, and its smooth curved surface design can reduce frictional loss during insertion and removal. The rhomboid structure is more suitable for snap-fit ​​connections, and its sharp geometric shape can provide reliable mechanical positioning, ensuring a stable connection with the external circuit. The welding terminal 122 innovatively adopts a flat thin-plate structure. Compared with the traditional cylindrical welding terminal 122, it can increase the contact area with the tab, significantly improve the welding strength, and effectively reduce contact resistance, thereby improving the conductivity of the welding terminal 122 and the overall circuit's working efficiency and stability.

[0041] like Figure 3 As shown, based on the same inventive concept as the cover plate 1 described above, this application embodiment also provides a fully sealed electromagnetic shielding structure for a battery, capacitor, or supercapacitor, including a housing 2 and the cover plate 1 as described above. The cover plate 1 and the housing 2 are closed to form a fully sealed electromagnetic shielding structure, sealing the battery, capacitor, or supercapacitor 3 within it. This structural design effectively blocks the propagation of electromagnetic interference, improves the electromagnetic compatibility of the battery, capacitor, or supercapacitor 3, and ensures its stable operation in complex electromagnetic environments.

[0042] Example 2: The main difference between this embodiment and Embodiment 1 lies in the arrangement of the insulating element 13. For example... Figure 4As shown, in this embodiment, only one insulating component 13 is provided, which only provides insulation and sealing for one of the positive or negative electrode leads 12. The basic technical principle and technical effect of the insulating component 13 in achieving insulation and sealing are the same as in Embodiment 1, and will not be repeated here. At the same time, this embodiment also has the following advantages: by designing an insulating component 13 to only provide insulation and sealing for one of the positive or negative electrode leads 12, this structure can avoid leakage and completely eliminate the problem of "alkali creep," preventing the liquid that seeps out after "alkali creep" from corroding the circuit board, and solving the problem of "alkali creep" up the leads during long-term use of supercapacitors.

[0043] Example 3: like Figure 5 As shown, the main difference between this embodiment and Embodiment 1 lies in the arrangement of the through hole 111 and the insulating member 13. For example... Figure 4 As shown, in this embodiment, only one through hole 111 and one insulating member 13 are provided. The through hole 111 is a long strip-shaped single-hole structure, which can accommodate both the positive and negative electrode leads 12. The insulating member 13 is an integral structure, and its outer contour is a long strip-shaped structure corresponding to the through hole 111; and the insulating member 13 surrounds both the positive and negative electrode leads 12, insulating and sealing them. The basic technical principle and technical effect of the insulating member 13 in achieving insulation and sealing are the same as in Embodiment 1, and will not be repeated here. At the same time, the insulating member 13 in this embodiment can be integrally formed between the end cap 11 and the positive and negative electrode leads 12 by hot melting, simultaneously insulating and sealing one of the positive and negative electrode leads 12, simplifying the production steps and improving production efficiency.

[0044] It should also be noted that, without conflict, the embodiments of this utility model and the features therein can be combined with each other to obtain new embodiments.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. The scope of protection of the present utility model should be determined by the scope of the claims. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A cover plate for use in batteries, capacitors, or supercapacitors, wherein the cover plate (1) cooperates with the outer casing (2) of the battery, capacitor, or supercapacitor to form a fully sealed electromagnetic shielding structure, characterized in that, The cover plate (1) includes an end cap (11), positive and negative electrode guides (12), and an insulating member (13); the end cap (11) has a through hole (111), the positive and negative electrode guides (12) are inserted into the through hole (111), and the insulating member (13) is tightly fitted between the end cap (11) and the positive and negative electrode guides (12) to seal the through hole (111); the upper and lower end faces of the insulating member (13) are flush with the upper and lower surfaces of the end cap (11).

2. The cover plate for use in batteries, capacitors, or supercapacitors according to claim 1, characterized in that, The insulating component (13) is made of ceramic or glass material and is formed between the end cap (11) and the positive and negative electrode needles (12) by hot melting to achieve a tight fit.

3. The cover plate for use in batteries, capacitors, or supercapacitors according to claim 2, characterized in that, The insulating component (13) has a cylindrical ring structure, with its inner ring surface closely fitting the positive and negative electrode guide pins (12) and its outer ring surface closely fitting the end cap (11).

4. The cover plate for use in batteries, capacitors, or supercapacitors according to claim 1, characterized in that, The end cap (11) is made of a metal material, which is any one of aluminum, copper and stainless steel.

5. The cover plate for use in batteries, capacitors, or supercapacitors according to claim 1, characterized in that, The positive and negative electrode leads (12) are made of metal materials, such as aluminum, copper and stainless steel.

6. The cover plate for use in batteries, capacitors, or supercapacitors according to claim 5, characterized in that, The positive and negative electrode leads (12) include a lead-out end (121) and a welding end (122). The lead-out end (121) and the welding end (122) are distributed on the upper and lower sides of the end cap (11). The welding end (122) is used to weld to the tabs of a battery, capacitor or supercapacitor.

7. The cover plate for use in batteries, capacitors, or supercapacitors according to claim 6, characterized in that, The lead-out end (121) is a cylindrical or rhomboid structure, and the welding end (122) is a flat thin sheet structure.

8. A fully sealed electromagnetic shielding structure for a battery, capacitor, or supercapacitor, characterized in that, It includes an outer shell (2) and a cover plate (1) as described in any one of claims 1 to 7, wherein the cover plate (1) and the outer shell (2) are closed to form a fully sealed electromagnetic shielding structure.

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