Detachable battery structure with cylindrical steel shell

Abstract

The utility model relates to a cylindrical steel shell detachable battery structure, which is characterized in that the cylindrical steel shell detachable battery structure comprises a cylindrical steel shell battery cell and an FPCA (Flexible Principal Component Analysis) plate which is arranged right above the cylindrical steel shell battery cell, and the FPCA plate is provided with an open hole which is right opposite to the positive electrode of the cylindrical steel shell battery cell. A conductive reinforcing sheet capable of shielding the opening is fixedly arranged on the bottom surface of the FPCA plate, the conductive reinforcing sheet is electrically connected with the positive electrode of the bottom surface of the FPCA plate, and a welding area of the conductive reinforcing sheet and the positive electrode of the cylindrical steel shell battery cell is formed on the conductive reinforcing sheet and directly faces a space defined by the inner circumferential wall of the opening. A welding tool can penetrate through the welding area to weld the conductive reinforcing sheet and the positive electrode of the cylindrical steel shell battery cell; the laser welding device can be directly welded with the arc side edge (the upper side peripheral wall of the cathode of the cylindrical steel shell battery cell) at the sealing position of the anode cap of the cylindrical steel shell battery cell through laser, and does not need to be led to the bottom of the cathode of the cylindrical steel shell to be welded through an extended nickel strap (lead), so that the cost can be saved.

Description

Technical field:

[0002] The utility model relates to the structure of an electronic cigarette battery, in particular to a cylindrical steel shell detachable battery structure. Background technology:

[0004] Since the cylindrical soft-pack batteries in the current e-cigarette market cannot be removed by users after being installed in the host and connected, the battery in the e-cigarette cannot be replaced once it is damaged, which makes the entire e-cigarette unusable. According to 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 batteries at any time during the product life cycle, and that the batteries can be easily removed by end users without the need for special tools. Against this background, it has become a key issue that whole machine assembly plants and battery companies are urgently trying to solve.

[0005] Currently, a Chinese patent "A detachable battery structure for a handheld electronic device and a handheld electronic device" has been retrieved, with publication number CN219457886U, which includes a shell and a battery. The shell is provided with a battery compartment for detachably installing the battery, one end of the battery compartment is provided with a plurality of inverted structures, and the other end is provided with a plurality of spring sheets. One end of the battery is laterally provided with grooves that cooperate with the plurality of inverted structures, the middle position of the groove protrudes toward the direction of the plurality of inverted structures, and the other end is abutted against the plurality of spring sheets. Although the patent adopts an inverted structure design, which can prevent the battery from loosening or falling, achieves a firm effect, and increases user experience; it cannot achieve detachability from the electronic device, and cannot achieve convenient production and manufacturing.

[0006] At present, a Chinese patent "A detachable battery structure" has also been retrieved, with publication number CN103107300B, which includes a battery mounting body mounted on the sight and a battery device detachably connected to the battery mounting body, wherein the battery device includes a base, a circuit board, a battery and a battery cover, wherein the base is provided with a groove for mounting the circuit board, the circuit board is mounted in the groove and electrically connected to the diode, the battery is electrically connected above the circuit board, and the battery cover is covered above the battery. Although the invention reduces maintenance costs by detachably connecting the battery device to the sight, thereby enabling the originally easily damaged battery device to be replaced and maintained, it cannot achieve detachability from the electronic device and cannot achieve convenient production and manufacturing. Summary of the invention:

[0008] In view of the above-mentioned problems, the purpose of the present invention is to propose a cylindrical steel shell detachable battery structure, which has a reasonable design, is conducive to its detachability from electrical equipment, and is convenient for production and manufacturing.

[0009] The utility model is implemented by the following scheme:

[0010] The utility model provides a cylindrical steel shell detachable battery structure, characterized in that it comprises 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 electrode of the cylindrical steel shell battery cell, a conductive reinforcing sheet capable of covering the opening is fixedly provided on the bottom surface of the FPCA plate, the conductive reinforcing sheet is electrically connected to the positive electrode of the bottom surface of the FPCA plate, a space enclosed by the inner peripheral wall of the opening directly opposite to the conductive reinforcing sheet forms a welding area between the conductive reinforcing sheet and the positive electrode cap of the cylindrical steel shell battery cell, so that a welding tool can weld the conductive reinforcing sheet to the positive electrode of the cylindrical steel shell battery cell through the welding area; a negative electrode conductive sheet electrically connected to the negative electrode of the FPCA plate is fixedly provided on the bottom surface of the FPCA plate, the negative electrode conductive sheet has a lower bending portion capable of being welded close to the upper peripheral wall of the cylindrical steel shell battery cell, and the conductive reinforcing sheet has an avoidance portion for avoiding the connection of the negative electrode conductive sheet with the bottom surface of the FPCA plate.

[0011] Preferably, the lower bent portion of the negative electrode conductive sheet is arc-shaped to match the arc shape of the upper peripheral wall of the cylindrical steel shell battery cell.

[0012] Preferably, the portion where the negative electrode conductive sheet is connected to the bottom surface of the FPCA plate is planar.

[0013] Preferably, a double-sided film is provided between the bottom surface of the conductive reinforcing sheet and the upper surface of the cylindrical steel shell battery core except the positive electrode cap portion, and the center of the double-sided film has a through hole to avoid the positive electrode protrusion of the cylindrical steel shell battery core.

[0014] Preferably, the FPCA board is provided with a patch connector that is detachably connected to the electrical device.

[0015] Preferably, EVA foam is provided above the FPCA plate.

[0016] Preferably, an insulating sheet is fixedly provided on the bottom surface of the cylindrical steel shell battery cell.

[0017] Preferably, the outer peripheral surface of the cylindrical steel shell battery core is provided with a PET heat shrink tubing.

[0018] The utility model is a production method for a cylindrical steel shell detachable battery structure, which is characterized by: the specific steps are as follows:

[0019] (1) The conductive reinforcement sheet is pre-electrically connected and fixed to the positive electrode on the bottom surface of the FPCA board, and the conductive reinforcement sheet covers the opening on the FPCA board.

[0020] (2) The negative electrode conductive sheet is electrically connected and fixed to the negative electrode on the bottom surface of the FPCA board in advance, and the conductive reinforcement sheet has a relief portion to avoid the connection between the negative electrode conductive sheet and the bottom surface of the FPCA board;

[0021] (3) The bottom surface of the conductive reinforcement sheet is initially fixed to the upper surface of the cylindrical steel shell battery cell by double-sided tape, and it is ensured that the bottom surface of the conductive reinforcement sheet is in contact with the positive electrode cap of the cylindrical steel shell battery cell, and that the lower curved arc portion of the negative electrode conductive sheet is in contact with the upper peripheral wall of the cylindrical steel shell battery cell;

[0022] (4) Use a welding tool to weld and fix the conductive reinforcement sheet to the positive electrode cap of the cylindrical steel shell battery cell through the welding area; use a welding tool to weld and fix the lower curved portion of the negative electrode conductive sheet to the upper peripheral wall of the cylindrical steel shell battery cell;

[0023] (5) Paste EVA foam on the top of the FPCA board to buffer and fix it with the battery compartment of the equipment host and prevent vibration;

[0024] (6) An insulating sheet is attached to the bottom of the cylindrical steel shell battery cell, and the outermost layer is covered with a PET heat shrink tube for heat shrinking, which can play an insulating role.

[0025] Preferably, the welding of the conductive reinforcing sheet and the positive electrode cap of the cylindrical steel shell battery cell; and the welding of the lower bent arc portion of the negative electrode conductive sheet and the upper peripheral wall of the cylindrical steel shell battery cell are performed by laser welding.

[0026] Advantages of the utility model: the cylindrical steel shell detachable battery of the utility model is installed with an FPCA circuit board, and a patch connector is arranged on the FPCA circuit board, which is snap-fitted and connected with the connector seat of the battery compartment of the device. The L-shaped arc surface nickel sheet (negative electrode conductive sheet) on the PCBA circuit board can be directly laser welded with the arc side edge (the upper peripheral wall of the cylindrical steel shell battery cell) at the sealing portion of the positive electrode cap of the cylindrical steel shell battery cell, and there is no need to extend the nickel strip (wire) to the bottom of the negative electrode of the cylindrical steel shell for welding, which can save costs; the utility model can be detachable, and users 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 conveniently disassembled for environmentally friendly recycling. In addition, the patented production and assembly process of the utility model is simple, the assembly cost is low, the detachable operation is convenient, and automation can be easily realized, so it is practical and creative. Description of the drawings:

[0028] The utility model is further described below in conjunction with the accompanying drawings;

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0030] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0031] Figure 3 It is a schematic diagram of the partial explosion structure of the utility model;

[0032] Figure 4 It is a schematic diagram of the cross-section explosion structure of the utility model;

[0033] Figure 5 yes Figure 4 A partial view of

[0034] Figure 6 It is a three-dimensional diagram of the negative electrode conductive sheet. Specific implementation method:

[0036] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0037] The utility model provides a cylindrical steel shell detachable battery structure comprising a cylindrical steel shell battery core 1 and an FPCA board 2 installed directly above the cylindrical steel shell battery core 1. The FPCA board uses a flexible circuit board and is bendable. A patch connector 11 detachably connected to an electrical device is installed on the FPCA board. The patch connector 11 is docked with a connector socket of a host battery compartment (electrical device). The battery is resistant to vibration and falling, does not damage the battery, and improves the reliability, stability and safety of the battery contact.

[0038] The FPCA plate 2 is provided with an opening 3 which is opposite to the positive electrode of the cylindrical steel shell battery cell 1 (the cylindrical steel shell battery cell 1 is a component produced by the applicant company and is available on the market, and the positive electrode at the center of its upper surface has a protruding cap). The size of the opening 3 is equal to the protrusion of the positive electrode cap, and the opening can be circular, elliptical or square. A conductive reinforcement sheet 4 capable of covering the opening 3 is fixedly provided on the bottom surface of the FPCA plate 2. The conductive reinforcement sheet 4 can be stainless steel, nickel-plated stainless steel plate, etc. The area of ​​the conductive reinforcement sheet 4 is at least larger than the area of ​​the opening 3, so that the opening 3 can be covered, and the position where the conductive reinforcement sheet 4 is larger than the opening 3 can be welded and fixed to the bottom surface of the FPCA plate 2.

[0039] The conductive reinforcing sheet 4 is electrically connected to the positive electrode on the bottom surface of the FPCA plate 2 (of course, it does not exclude the conductive reinforcing sheet 4 from being electrically connected to the positive electrode on the side surface or upper surface of the FPCA plate 2). The conductive reinforcing sheet 4 is opposite to the space enclosed by the inner wall of the opening 3, forming a welding area 5 between the conductive reinforcing sheet and the positive electrode of the cylindrical steel shell battery cell. When it is necessary to fix the conductive reinforcing sheet 4 and the positive electrode cap of the cylindrical steel shell battery cell, a welding tool (laser of a laser welding device, or resistance welding, preferably laser welding) can be used to weld the conductive reinforcing sheet to the positive electrode cap of the cylindrical steel shell battery cell through the welding area 5.

[0040] If the opening 3 and other structures are not provided on the FPCA plate 2, in order to realize the electrical connection between the FPCA plate 2 and the positive electrode of the cylindrical steel shell battery cell 1, it is necessary to install a longer wire on the FPCA plate 2 to facilitate the welding connection, and during welding, the FPCA plate needs to be moved away from directly above the positive electrode of the cylindrical steel shell battery cell 1 to avoid interference from the welding needle or laser of the welding equipment. In order to realize the welding, it is also necessary to design a special fixture that meets the requirements of placing the FPCA plate 2 and the cylindrical steel shell battery cell 1. The steps for realizing this process include placing the FPCA plate 2 and the cylindrical steel shell battery cell 1 on the fixture, and manually welding the free end of the wire (the fixed end of the wire is pre-welded on the FPCA plate 2) to the positive electrode of the cylindrical steel shell battery cell 1, which not only increases the manufacturing cost of the fixture, but also requires manual process operation (or equipment that can well position the free end of the positioning wire and the positive electrode of the cylindrical steel shell battery cell 1, the equipment also needs to avoid the welding equipment, the equipment structure is complex, and the manufacturing cost is high), the operation is difficult, and the production efficiency is low.

[0041] The production process of the present application (see steps 3 and 4 of the production method of the cylindrical steel shell detachable battery structure of the utility model described below) is relatively simple, easy to operate and has low production cost.

[0042] A negative conductive sheet 6 electrically connected to the negative electrode of the FPCA board is fixedly provided on the bottom surface of the FPCA board. The negative conductive sheet 6 has a lower bending portion 7 that can be contacted and welded with the upper peripheral wall 16 of the cylindrical steel shell battery cell. The conductive reinforcement sheet 4 has an avoidance portion 8 that avoids the connection between the negative conductive sheet and the bottom surface of the FPCA board to prevent short circuit between the positive and negative electrodes.

[0043] Specifically, the lower bent portion 7 of the negative electrode conductive sheet is arc-shaped to match the arc shape of the upper peripheral wall of the cylindrical steel shell battery cell, and the portion where the negative electrode conductive sheet 6 is connected to the bottom surface of the FPCA plate 2 is flat.

[0044] The FPCA board can adopt a 0.15mm thick FPCA board, and increase the thickness of the nickel-plated stainless steel conductive reinforcement plate by 0.15mm. The thickness of the entire FPCA board can be made very thin (only 0.9mm), which plays a key role in the space utilization and appearance design of the equipment host (the existing FR4 thickness is 0.6mm and does not have electrical connectivity; the innovative design point of this application is to cleverly use the conductive reinforcement sheet of the nickel-plated stainless steel sheet, which can be used as a reinforcement plate of the FPC board and as a conductive connector; the center of the FPCA board has a hollow opening with a diameter of ∮3.0mm, which is convenient for spot welding with the positive electrode of the battery cell and thereby fixing the FPCA circuit board). The diameter of the FPCA board can be 0.4mm smaller than the diameter of the cylindrical steel shell battery.

[0045] In order to pre-fix the FPCA board 2, the conductive reinforcement sheet 4 and the cylindrical steel shell battery cell 1 and realize a simple process, a double-sided tape 9 is arranged between the bottom surface of the conductive reinforcement sheet and the upper surface of the cylindrical steel shell battery cell except the positive electrode cap protrusion 15, and the thickness of the double-sided tape is equivalent to the thickness of the positive electrode protrusion of the cylindrical steel shell battery cell; the center of the double-sided tape has a through hole 10 for avoiding the positive electrode cap protrusion 15 of the cylindrical steel shell battery cell, and the double-sided tape 9 can be used to preliminarily fix the FPCA board 2, the conductive reinforcement sheet 4 and the cylindrical steel shell battery cell 1, which provides convenience for subsequent welding fixation.

[0046] In order to increase the installation stability of the battery structure and the electrical components, an EVA foam 12 is provided above the FPCA board. By sticking the EVA foam 12 on the top of the FPCA board, it can play a role in buffering, fixing and anti-vibration with the battery compartment (electrical components) of the device host.

[0047] An insulating sheet 13 is fixedly provided on the bottom surface of the cylindrical steel shell battery cell, and a PET heat shrinkable tube 14 is provided on the outer circumference of the cylindrical steel shell battery cell. The insulating sheet 13 and the PET heat shrinkable tube 14 serve to insulate the cylindrical steel shell battery cell 1 from the outside and to print relevant information of the battery. The upper part of the PET heat shrinkable tube 14 extends to the upper surface of the EVA foam 12, and the lower part extends to the lower surface of the insulating sheet 13, so that the EVA foam 12 and the insulating sheet 13 can be covered as a whole stably and reliably.

[0048] The production method of the utility model cylindrical steel shell detachable battery structure has the following specific steps:

[0049] (1) The conductive reinforcing sheet 4 (which may be a flat stainless steel sheet or a nickel-plated stainless steel sheet) is electrically connected and fixed to the positive electrode on the bottom surface of the FPCA board 2 in advance (it may be welded), and the conductive reinforcing sheet covers the opening 3 on the FPCA board.

[0050] (2) The negative electrode conductive sheet 6 is pre-electrically connected and fixed to the negative electrode on the bottom surface of the FPCA board (it can be welded and the welding position is located at the avoidance portion 8), and the conductive reinforcement sheet 4 has a avoidance portion 8 to avoid the connection between the negative electrode conductive sheet and the bottom surface of the FPCA board;

[0051] (3) The bottom surface of the conductive reinforcing sheet 4 is preliminarily fixed to the upper surface of the cylindrical steel shell battery cell 1 by means of the double-sided adhesive sheet 9, and it is ensured that the bottom surface of the conductive reinforcing sheet contacts the protrusion of the positive electrode cap of the cylindrical steel shell battery cell, and that the lower bent portion 7 of the negative electrode conductive sheet contacts the upper peripheral wall 16 of the cylindrical steel shell battery cell. The thickness of the double-sided adhesive is equivalent to the thickness of the positive electrode protrusion of the cylindrical steel shell battery cell. In this step, the bottom surface of the conductive reinforcing sheet and the upper surface of the cylindrical steel shell battery cell can be preliminarily fixed by means of the double-sided adhesive, so that no additional tooling or jig is required for positioning, and no additional equipment is required for positioning the wire. The operation is convenient and the automation of the equipment can be realized (since the upper peripheral wall 16 of the cylindrical steel shell battery cell is an arc, the lower bent portion 7 of the negative electrode conductive sheet is also an arc. Therefore, the FPCA plate 2 and the conductive reinforcing sheet 4 can be rotated arbitrarily in the circumferential direction to meet the installation requirements. Therefore, there is no need to limit the position in the circumferential direction, and the positioning is relatively simple);

[0052] (4) Use a welding tool to weld the conductive reinforcing sheet 4 to the positive protrusion of the cylindrical steel shell battery cell through the welding area; use a welding tool to weld the lower bent portion 7 of the negative conductive sheet to the upper peripheral wall 16 of the cylindrical steel shell battery cell. The welding of the two places can be performed by laser welding or resistance welding, and laser welding is preferred;

[0053] (5) Paste EVA foam 12 on the top of the FPCA board to buffer and fix it with the battery compartment of the equipment host and to prevent vibration;

[0054] (6) An insulating sheet 13 is attached to the bottom of the cylindrical steel shell battery cell, and the outermost layer is covered with a PET heat shrink tube 14 for heat shrinking.

[0055] The welding of the conductive reinforcing sheet 4 and the positive electrode cap protrusion of the cylindrical steel shell battery cell and the welding of the lower bent portion 7 of the negative electrode conductive sheet and the upper peripheral wall of the cylindrical steel shell battery cell are performed by laser welding.

[0056] Advantages of the utility model: the cylindrical steel shell detachable battery of the utility model is installed with an FPCA circuit board, and a patch connector is arranged on the FPCA circuit board, which is snap-fitted and connected with the connector seat of the battery compartment of the device. The L-shaped arc surface nickel sheet (negative electrode conductive sheet) on the PCBA circuit board can be directly laser welded with the arc side edge (the upper peripheral wall of the cylindrical steel shell battery cell) at the sealing portion of the positive electrode cap of the cylindrical steel shell battery cell, and there is no need to extend the nickel strip (wire) to the bottom of the negative electrode of the cylindrical steel shell for welding, which can save costs; the utility model can be detachable, and users 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 conveniently disassembled for environmentally friendly recycling. In addition, the patented production and assembly process of the utility model is simple, the assembly cost is low, the detachable operation is convenient, and automation can be easily realized, so it is practical and creative.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A cylindrical steel shell detachable battery structure, characterized in that: It comprises a cylindrical steel shell battery cell and an FPCA plate installed directly above the cylindrical steel shell battery cell, wherein the FPCA plate is provided with an opening directly opposite to the positive electrode of the cylindrical steel shell battery cell, 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 electrode of the bottom surface of the FPCA plate, a space enclosed by the inner peripheral wall of the opening directly opposite to the conductive reinforcement sheet forms a welding area between the conductive reinforcement sheet and the positive electrode of the cylindrical steel shell battery cell, so that the welding tool can weld the conductive reinforcement sheet to the positive electrode of the cylindrical steel shell battery cell through the welding area; a negative electrode conductive sheet electrically connected to the negative electrode of the FPCA plate is fixedly provided on the bottom surface of the FPCA plate, the negative electrode conductive sheet has a lower bending portion capable of contacting and welding with the upper peripheral wall of the cylindrical steel shell battery cell, and the conductive reinforcement sheet has an avoidance portion for avoiding the connection between the negative electrode conductive sheet and the bottom surface of the FPCA plate.

2. The cylindrical steel shell detachable battery structure according to claim 1, characterized in that: The lower bending portion of the negative electrode conductive sheet is arc-shaped to match the arc shape of the upper peripheral wall of the cylindrical steel shell battery core.

3. The cylindrical steel shell detachable battery structure according to claim 2, characterized in that: The portion where the negative electrode conductive sheet is connected to the bottom surface of the FPCA plate is planar.

4. The cylindrical steel shell detachable battery structure according to claim 3 is characterized in that: A double-sided film is arranged between the bottom surface of the conductive reinforcing sheet and the upper surface of the cylindrical steel shell battery core except the positive electrode cap portion.

5. The cylindrical steel shell detachable battery structure according to claim 4 is characterized in that: The FPCA board is provided with a patch connector which is detachably connected to the electrical device.

6. The cylindrical steel shell detachable battery structure according to claim 5, characterized in that: EVA foam is arranged above the FPCA plate.

7. The cylindrical steel shell detachable battery structure according to claim 6, characterized in that: An insulating sheet is fixedly provided on the bottom surface of the cylindrical steel shell battery core.

8. The cylindrical steel shell detachable battery structure according to claim 7, characterized in that: The outer peripheral surface of the cylindrical steel shell battery core is sleeved with a PET heat shrink tubing.

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