Cap structure of cylindrical steel shell battery, cylindrical steel shell battery structure and production method of cylindrical steel shell battery structure
By designing a detachable cylindrical steel case battery cap structure, the problem of electronic cigarette batteries being unremovable at the main end is solved, and the battery is simply installed and replaced, reducing assembly costs and complexity, and improving the reliability and stability of battery contact.
Patent Information
- Application Number
- CN202510216529.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-05-23
AI Technical Summary
The existing electronic cigarette cylindrical steel shell batteries cannot be removed at the host end, and the positive and negative electrode output of the battery needs to be passed through complex welding processes, which increases assembly cost and difficulty.
A cap structure for cylindrical steel shell batteries is designed, including an annular sheet body and a side sheet. The annular sheet body does not come into contact with the positive cap of the uncovered cylindrical steel shell battery cell, and the side sheet is in electrical contact with the negative electrode of the battery cell. By welding the conductive reinforcement sheet and the positive electrode, the battery can be detachable and assembled, and the welding process is eliminated in production.
The removability of the electronic cigarette battery is realized, reducing assembly costs and complexity, and users can install and replace the battery by themselves without the need for special tools, and the battery contact reliability and stability are improved.
Smart Images
Figure CN120033403A_ABST
Abstract
Description
Technical Field
[0002] The present invention relates to the field of electronic cigarette batteries, in particular to a cap structure of a cylindrical steel shell battery, a cylindrical steel shell battery structure and a production method thereof, and a detachable assembly structure of a cylindrical steel shell battery. Background Art
[0004] Because the cylindrical steel shell batteries in the current e-cigarette market cannot be removed by users after being installed in the host and connected, but in accordance with Article 11 of the EU's new battery (EU) 2023 / 1542 Regulation "Removability and Replaceability", innovative designs are required to ensure that end users can remove and replace them at any time during the product life cycle, that is, the battery can be easily removed by the end user without the need for special tools; in this context, it has become a key issue that whole machine assembly plants and battery companies are urgently trying to solve.
[0005] In order to achieve positive and negative output of the battery at the same end, the negative electrode wire needs to be led out from the bottom of the cylindrical steel shell and welded, which is cumbersome and complicated, increasing the assembly cost and the difficulty of achieving battery detachability.
[0006] Therefore, the applicant applied for "Cylindrical Steel Shell Removable Battery Structure and Production Method thereof" Publication No. CN118367311A in April 2024. The cylindrical steel shell removable battery structure includes a cylindrical steel shell battery cell and an FPCA plate installed directly above the cylindrical steel shell battery cell, the FPCA plate is provided with an opening directly opposite to the positive pole of the cylindrical steel shell battery cell, and a conductive reinforcement sheet capable of covering the opening is fixedly provided on the bottom surface of the FPCA plate. The conductive reinforcement sheet is electrically connected to the positive pole of the bottom surface of the FPCA plate, and the space enclosed by the inner circumferential wall of the opening on the conductive reinforcement sheet forms a welding area between the conductive reinforcement sheet and the positive pole of the cylindrical steel shell battery cell, so that the welding tool can weld the conductive reinforcement sheet to the cylindrical steel shell battery through the welding area. The positive electrode of the core is welded; the invention can be directly laser welded with the arc side of the positive electrode cap seal of the cylindrical steel shell battery cell (the upper circumferential wall of the negative electrode of the cylindrical steel shell battery cell), and there is no need to extend the nickel strip (wire) to the bottom of the cylindrical steel shell negative electrode for welding, which can save costs. At the same time, users of the detachable battery can install and replace batteries of the same specifications on the electronic cigarette products by themselves without using any special tools. After the battery life cycle ends, it can be easily disassembled for environmentally friendly recycling. The invention patent has a simple production and assembly process, low assembly cost, convenient detachable operation, and easy automation, and is practical and creative.
[0007] However, this patent still requires welding to connect and fix the components in the battery. Welding equipment and positioning tooling are required during welding production. The production and assembly process is relatively complicated and the production cost is high. Summary of the invention
[0009] In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a cap structure of a cylindrical steel shell battery, a cylindrical steel shell battery structure and a production method thereof. The cap structure of the cylindrical steel shell battery and the cylindrical steel shell battery structure are reasonably designed, easy to manufacture and have low cost.
[0010] The cap structure of the cylindrical steel shell battery of the present invention is characterized in that it includes an annular sheet body for electrically contacting the negative electrode conductive column and a side sheet fixedly connected to the side of the annular sheet body and the inner surface of which can electrically contact the negative electrode at the outer periphery of the upper end of the uncoated cylindrical steel shell battery cell, the center of the annular sheet body has a through hole for the positive electrode conductive column to pass through so as to electrically contact the positive electrode cap at the center of the upper end of the uncoated cylindrical steel shell battery cell, and the annular sheet body does not contact the positive electrode cap of the uncoated cylindrical steel shell battery cell.
[0011] Preferably, the outer diameter of the annular sheet is the same as the diameter of the uncoated cylindrical steel shell battery cell, and the diameter of the through hole is 0.5-1.0 mm larger than the diameter of the positive electrode cap of the uncoated cylindrical steel shell battery cell.
[0012] Preferably, the annular sheet has an annular plane with a width of 1.8-2.5 mm, so as to be able to have good electrical contact with the negative electrode conductive column.
[0013] Preferably, a plurality of the side pieces are evenly distributed in the entire circumferential direction, and the plurality of side pieces clamp the outer circumference of the upper end of the uncoated cylindrical steel shell battery core.
[0014] Preferably, the side piece has an inner recessed portion that can be sunk into the annular rolling groove on the outer periphery of the upper end of the uncoated cylindrical steel shell battery core, and the inner recessed portion can clamp the cap on the upper end of the uncoated cylindrical steel shell battery core.
[0015] Preferably, the annular sheet body is made of a conductive material with a thickness of 0.6 mm, and the side sheets are claw-shaped spring sheets made of stainless steel with nickel or gold plating.
[0016] Preferably, the side piece is a round tube that can be tightly fitted on the upper end of the uncoated cylindrical steel shell battery cell.
[0017] Preferably, the circular tube body and the annular sheet body are integrally stamped to form a cap, and the cap is made of a stainless nickel-plated material with a thickness of 0.1 mm through stamping and stretching.
[0018] The cylindrical steel shell battery structure of the present invention comprises an uncoated cylindrical steel shell battery cell, the cap and the heat shrinkable sleeve, wherein the cap is installed on the upper end of the uncoated cylindrical steel shell battery cell, and the heat shrinkable sleeve is sleeved on the outer periphery of the uncoated cylindrical steel shell battery cell and the cap.
[0019] The detachable assembly structure of the cylindrical steel shell battery of the present invention is characterized in that it includes the cylindrical steel shell battery and a device-end battery seat installed on the upper end of the cylindrical steel shell battery, the device-end battery seat is fixedly provided with a positive conductive column and a negative conductive column, the inner end of the positive conductive column is in electrical contact with the positive cap of the uncoated cylindrical steel shell battery cell, and the inner end of the negative conductive column is in electrical contact with the annular sheet.
[0020] The production method of the cylindrical steel shell battery structure of the present invention is characterized in that: the cap is prefabricated, the cap is installed on the upper end of the uncoated cylindrical steel shell battery cell, and finally the heat shrink sleeve is heat-shrunk on the outer periphery of the uncoated cylindrical steel shell battery cell and the cap.
[0021] The cylindrical steel shell battery structure of the present invention is mainly composed of an uncoated cylindrical steel shell battery cell, a cap and a heat shrinkable tube. During production and assembly, the cap is prefabricated and installed on the upper end of the uncoated cylindrical steel shell battery cell. Finally, the heat shrinkable tube is heat-shrunk on the outer periphery of the uncoated cylindrical steel shell battery cell and the cap. The production method of the cylindrical steel shell battery structure does not require additional welding steps, and production and assembly are convenient, fast and low-cost.
[0022] The detachable assembly structure of the cylindrical steel shell battery of the present invention solves the problem that the electronic cigarette battery cannot be disassembled by the user at the host end; by adopting an uncoated cylindrical steel shell battery core + a cap structure + a heat shrink tubing, it is docked with the positive conductive column B+ and the negative conductive column B- of the device battery holder, making it easy for users to replace it, and has the advantages of anti-vibration, anti-falling and no damage to the battery; the reliability, stability and safety of the battery contact are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a three-dimensional diagram of an embodiment of a cap of the present invention; Figure 2 , 3 It is a three-dimensional diagram of another embodiment of the cap of the present invention from two viewing angles; Figure 4 This is a three-dimensional diagram of a cylindrical steel shell battery structure according to an embodiment of the present invention; Figure 5 yes Figure 4 Exploded diagram of Figure 6 yes Figure 4 sectional view of Figure 7 yes Figure 6 A partial view of Figure 8 is a three-dimensional diagram of a cylindrical steel shell battery structure according to another embodiment of the present invention; Figure 9 yes Figure 8 Exploded diagram of Figure 10 yes Figure 8 sectional view of Figure 11 yes Figure 10 A partial view of the . DETAILED DESCRIPTION
[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0027] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.
[0029] The cap structure of the cylindrical steel shell battery of the present invention includes an annular sheet body 1 for electrically contacting the negative electrode conductive column B- and a side sheet 3 fixedly connected to the side of the annular sheet body 1 and the inner surface of which can electrically contact the negative electrode 6 at the outer periphery of the upper end of the uncoated cylindrical steel shell battery cell 2. The center of the annular sheet body 1 has a through hole 5 for the positive electrode conductive column B+ to pass through so as to electrically contact the positive electrode cap 4 at the center of the upper end of the uncoated cylindrical steel shell battery cell. The annular sheet body 1 does not contact the positive electrode cap 4 of the uncoated cylindrical steel shell battery cell.
[0030] The above-mentioned uncoated cylindrical steel shell battery core 2 is a self-produced part or a commercially available part, which is cylindrical, its outer peripheral shell is the negative electrode 6, and the center of its upper end is the positive electrode cap 4. The specific internal structure is not repeated here.
[0031] The negative conductive column B- and the positive conductive column B+ are fixed to the device end (the device end may be an electronic cigarette), or the negative conductive column B- and the positive conductive column B+ are fixed to the cover-shaped battery holder 9 at the device end.
[0032] The side piece 3 and the annular sheet body 1 can be integrally stamped (such as Figure 1 As shown), or it can be welded into one piece (as shown Figure 2 , 3 as shown).
[0033] One embodiment, such as Figure 2 , 3As shown, the side pieces 3 are evenly distributed in the entire circumferential direction, such as 3, 4 or 6, and the side pieces clamp the outer circumference of the upper end of the uncoated cylindrical steel shell battery core. The side pieces can be straight elastic pieces or arc-shaped elastic pieces (such as Figure 2 , 3 As shown in the figure, the side piece is clamped on the outer periphery of the upper end of the uncoated cylindrical steel shell battery core, and the diameter of the circle surrounded by the inner circumferential walls of the side pieces can be slightly smaller than the diameter of the upper end of the uncoated cylindrical steel shell battery core, that is, the uncoated cylindrical steel shell battery core is clamped by the elasticity of the side piece.
[0034] Or the side piece has an inner recess 7 which can be sunken into the annular rolling groove 8 on the outer periphery of the upper end of the uncoated cylindrical steel shell battery cell. The shape of the inner recess 7 can be consistent with or close to the shape of the annular rolling groove 8. The specific inner recess 7 is an arc-shaped concave shape. The inner recess 7 can clamp the cap on the upper end of the uncoated cylindrical steel shell battery cell. Through the cooperation of the inner recess 7 and the annular rolling groove 8, the contact area between the side piece and the upper end of the uncoated cylindrical steel shell battery cell is larger, so that the installation stability of the side piece (and the cap) and the uncoated cylindrical steel shell battery cell is higher.
[0035] In this embodiment, the annular sheet body 1 is made of a conductive material with a thickness of 0.1mm-1.0 (such as stainless steel, nickel-plated or gold-plated stainless steel, etc.), and the side sheet is a claw-shaped spring sheet of stainless steel with nickel or gold plating. The thickness of the side sheet can be 0.05-0.3mm, such as the thickness of the side sheet is 0.1mm, etc., and the width is 2.5-3.5mm.
[0036] Another embodiment, such as Figure 1 As shown, the side piece 3 is a circular tube (i.e., a circular thin shell) that can be tightly fitted on the upper end of the uncoated cylindrical steel shell battery cell. The inner wall of the circular tube is tightly fitted with the wall of the negative electrode 6 on the outer periphery of the upper end of the uncoated cylindrical steel shell battery cell 2, thereby forming an electrical connection without the need for additional welding. The above-mentioned tight fit is an interference fit in the mechanical field.
[0037] In order to improve the tight fit between the inner wall of the circular tube and the wall of the negative electrode 6 at the outer periphery of the upper end of the uncoated cylindrical steel shell battery core 2, the inner wall of the circular tube can be knurled (straight lines or mesh patterns can be rolled out).
[0038] The circular tube body can be integrally stamped with the annular sheet body to form a cap, which is made of stainless nickel-plated material with a thickness of 0.05mm-0.3mm (can be 0.1mm) by stamping and stretching. The height of the circular tube body is 4-9mm, can be 6.1mm, etc., and the outer diameter of the circular tube body is 13.2mm.
[0039] The outer diameter of the annular sheet body 1 in the above two embodiments is the same as or equivalent to the diameter of the uncoated cylindrical steel shell battery cell (the size error can be plus or minus 0.1mm, etc.), and the diameter of the through hole 5 is 0.5-1.0mm larger than the diameter of the positive electrode cap 4 of the uncoated cylindrical steel shell battery cell, so that the annular sheet body 1 in electrical contact with the negative electrode of the battery cell is kept at a safe distance from the positive electrode cap 4 of the uncoated cylindrical steel shell battery cell (i.e., the positive electrode of the battery cell).
[0040] In order to ensure good contact, the annular sheet has an annular plane 10 with a width of 1.8-2.5 mm. The annular plane 10 is a plane that can make good electrical contact with the negative electrode conductive column B- to achieve negative electrode output.
[0041] The above dimensions are case dimensions, which can be determined according to different specifications of uncoated cylindrical steel shell battery cells to achieve product applications that are compatible with various specifications of uncoated cylindrical steel shell battery cells.
[0042] The cylindrical steel shell battery structure of the present invention (such as Figure 4-11 As shown), the cylindrical steel shell battery includes an uncoated cylindrical steel shell battery cell 2, the cap A and the heat shrinkable tube 11, the cap A is installed on the upper end of the uncoated cylindrical steel shell battery cell, and the heat shrinkable tube 11 (cylindrical film shape) is sleeved on the outer periphery of the uncoated cylindrical steel shell battery cell 2 and the cap A.
[0043] The cap A comprises an annular sheet body 1 for electrically contacting the negative electrode conductive column B- and a side sheet 3 fixedly connected to the side of the annular sheet body 1 and the inner surface of which can electrically contact the negative electrode 6 at the outer periphery of the upper end of the uncoated cylindrical steel shell battery cell 2. The center of the annular sheet body 1 has a through hole 5 for the positive electrode conductive column B+ to pass through to electrically contact the positive electrode cap 4 at the center of the upper end of the uncoated cylindrical steel shell battery cell. The annular sheet body 1 does not contact the positive electrode cap 4 of the uncoated cylindrical steel shell battery cell. The cylindrical steel shell battery structure of the present invention solves the problem that the positive and negative electrodes of the cylindrical steel shell battery cell cannot be output at the same end, and is convenient for the B+ and B- POGO PIN connectors at the device end to lead out the positive and negative electrodes from the same end of the battery to provide power for the device, reducing the cumbersomeness and complexity of the process of leading and welding the negative electrode line at the device end from the bottom of the cylindrical steel shell, thereby reducing the cost of assembly and the difficulty of realizing battery detachability.
[0044] The cylindrical steel shell battery detachable assembly structure of the present invention (such as Figure 4-11 As shown in the figure, users can install and replace batteries of the same specifications on electronic cigarette products by themselves without using any special tools. After the battery life cycle ends, it is more convenient to disassemble and recycle it in an environmentally friendly manner. The production and assembly process of the cylindrical steel shell battery of the present invention is particularly simple, the assembly and material costs are low, the disassembly operation is convenient, and automation is easy to realize, which is practical and creative.
[0045] The production method of the cylindrical steel shell battery structure is to prefabricate the cap A, install the cap on the upper end of the uncoated cylindrical steel shell battery cell, and finally sleeve the heat shrink sleeve 11 on the outer periphery of the uncoated cylindrical steel shell battery cell 2 and the cap A. The cylindrical steel shell battery has a simple assembly process, the uncoated cylindrical steel shell battery cell 2 and the cap A form a stable whole, the structure is reliable and stable, and it is easy to realize production automation.
[0046] The heat shrinkable tube may be made of PET material (i.e. polyethylene terephthalate plastic film), which serves to insulate and fix the uncoated cylindrical steel shell battery core from the outside, and the relevant information of the battery can be printed on the heat shrinkable tube.
[0047] The cylindrical steel shell battery detachable assembly structure of the present invention comprises the cylindrical steel shell battery and a device end battery holder 9 mounted on the upper end of the cylindrical steel shell battery, wherein the device end battery holder 9 is fixedly provided with a positive electrode conductive column B+ and a negative electrode conductive column B-, and the inner end (i.e. Figure 6 The inner side of the positive conductive column B+) is in electrical contact with the positive cap 4 of the uncoated cylindrical steel shell battery cell, and the inner end of the negative conductive column B- (i.e. Figure 6 The inner part of the negative electrode conductive column B-) is in electrical contact with the annular sheet body 1.
[0048] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection: it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0049] Equipment includes not only those elements, but also other elements that are not clearly listed, or also includes elements inherent to such processes, methods, articles or equipment. In the absence of more restrictions, the elements limited by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The above is only a specific implementation of the application, so that those skilled in the art can understand or implement the application. It will be obvious to those skilled in the art to modify these embodiments, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to these embodiments shown in this article, but will meet the widest scope consistent with the principles and novel features applied for herein.
Claims
1. A cap structure for a cylindrical steel shell battery, characterized in that: It includes an annular sheet body for electrically contacting the negative conductive column and a side sheet fixedly connected to the side of the annular sheet body and the inner surface of which can electrically contact the negative electrode at the outer periphery of the upper end of the uncoated cylindrical steel shell battery cell. The center of the annular sheet body has a through hole for the positive conductive column to pass through so as to electrically contact the positive electrode cap at the center of the upper end of the uncoated cylindrical steel shell battery cell. The annular sheet body does not contact the positive electrode cap of the uncoated cylindrical steel shell battery cell.
2. The cap structure of the cylindrical steel shell battery according to claim 1, characterized in that: The outer diameter of the annular sheet is the same as the diameter of the uncoated cylindrical steel shell battery core, and the diameter of the through hole is 0.5-1.0 mm larger than the diameter of the positive electrode cap of the uncoated cylindrical steel shell battery core.
3. The cap structure of the cylindrical steel shell battery according to claim 1, characterized in that: The annular sheet has an annular plane with a width of 1.8-2.5 mm, so as to be in good electrical contact with the negative electrode conductive column.
4. The cap structure of the cylindrical steel shell battery according to claim 1, 2 or 3, characterized in that: A plurality of side pieces are evenly distributed in the entire circumferential direction, and the plurality of side pieces clamp the outer circumference of the upper end of the uncoated cylindrical steel shell battery core.
5. The cap structure of the cylindrical steel shell battery according to claim 4, characterized in that: The side piece is provided with an inner concave portion which can be sunk into the annular rolling groove on the outer periphery of the upper end of the uncoated cylindrical steel shell battery core, and the inner concave portion can clamp the cap on the upper end of the uncoated cylindrical steel shell battery core.
6. The cap structure of the cylindrical steel shell battery according to claim 5, characterized in that: The annular sheet body is made of a conductive material with a thickness of 0.6 mm, and the side sheets are claw-shaped spring sheets made of stainless steel with nickel or gold plating.
7. The cap structure of the cylindrical steel shell battery according to claim 1, 2 or 3, characterized in that: The side piece is a round tube body that can be tightly sleeved on the upper end of the uncoated cylindrical steel shell battery core.
8. The cap structure of the cylindrical steel shell battery according to claim 7, characterized in that: The circular tube body and the annular sheet body are integrally stamped to form a cap, and the cap is made of a stainless nickel-plated material with a thickness of 0.1 mm and is formed by stamping and stretching.
9. A cylindrical steel shell battery structure, characterized in that: The cylindrical steel shell battery includes an uncoated cylindrical steel shell battery cell, a cap and a heat shrinkable tube as described in any one of claims 1 to 8, wherein the cap is installed on the upper end of the uncoated cylindrical steel shell battery cell, and the heat shrinkable tube is sleeved on the outer periphery of the uncoated cylindrical steel shell battery cell and the cap.
10. A method for producing a cylindrical steel shell battery structure as claimed in claim 9, characterized in that: Prefabricate the cap as described in any one of claims 1 to 8, install the cap on the upper end of the uncoated cylindrical steel shell battery cell, and finally sleeve the heat shrink sleeve on the outer circumference of the uncoated cylindrical steel shell battery cell and the cap.