Detachable lithium battery

Abstract

The detachable lithium battery comprises a battery cell, a steel shell, a rubber ring, a circuit board, a nickel strap and a PVC (polyvinyl chloride) film, one end of the steel shell is open, the battery cell is arranged in the steel shell, one end of the battery cell is provided with a first tab, and the other end of the battery cell is provided with a second tab; a groove is formed in one surface, far away from the steel shell, of the rubber ring; the circuit board is embedded in the groove, a positive electrode end and a negative electrode end are arranged on the face, away from the steel shell, of the circuit board, a first bonding pad connected with the positive electrode end and a second bonding pad connected with the negative electrode end are arranged on the face, facing the steel shell, of the circuit board, the first bonding pad is welded to the first tab, and the second bonding pad is welded to one end of the nickel strap. The other end of the nickel strap is welded with the second tab; the PVC film wraps the outer sides of the steel shell and the rubber ring, and the PVC film forms an edge pressing part on the edge of the face, away from the steel shell, of the circuit board. The battery has the advantages that the structure process is simple, the battery core can be detached, replaced and recycled, and the production cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and in particular relates to a detachable lithium battery. Background Art

[0002] The polymer lithium batteries (soft-pack batteries) used in traditional electronic cigarettes on the market are often installed inside the electronic cigarette shell. When the battery is used up, it is inconvenient to disassemble and cannot be recycled, resulting in poor sustainable use of electronic cigarettes on the user side, and at the same time causing waste of resources and environmental pollution.

[0003] For e-cigarette manufacturers, the process of directly installing lithium batteries inside electronic shells is cumbersome. Under existing technologies, during the process of installing and welding lithium batteries to the e-cigarette shells, there may be problems such as poor welding between copper wires and tabs, welding short circuits, and puncturing the battery under high-temperature soldering, causing leakage of soft-pack batteries, thereby causing certain production losses and increasing labor and material costs. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a detachable lithium battery with simple structure and process, the battery core can be disassembled, replaced, recycled and reused, and the production cost is low.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A detachable lithium battery comprises a battery cell, a steel shell, a rubber ring, a circuit board, a nickel strip and a PVC film, wherein an opening is provided at one end of the steel shell, the battery cell is arranged in the steel shell, the battery cell is provided with a first pole tab and a second pole tab, the first pole tab is provided at one end of the battery cell, and the second pole tab is provided at the other end of the battery cell; the rubber ring is cooperatively connected to the opening, and a groove is provided on a side of the rubber ring away from the steel shell; the circuit board is embedded in the groove, a positive terminal and a negative terminal are provided on a side of the circuit board away from the steel shell, and a first welding pad connected to the positive terminal and a second welding pad connected to the negative terminal are provided on a side of the circuit board facing the steel shell, the first welding pad is welded to the first pole tab, the second welding pad is welded to one end of the nickel strip, and the other end of the nickel strip is welded to the second pole tab; the PVC film is coated on the outside of the steel shell and the rubber ring, and a pressing edge portion is formed on the edge of the circuit board away from the steel shell.

[0007] As a preferred solution of the present invention, an exhaust hole is provided at the fitting position between the circuit board and the rubber ring.

[0008] As a preferred solution of the present invention, the groove is a circular groove, the outer periphery of the circuit board is provided with an arc edge and a straight edge, the arc edge is in contact with the groove wall of the groove, and the exhaust hole is formed between the straight edge and the groove wall of the groove.

[0009] As a preferred solution of the present invention, the exhaust hole is not completely covered by the edge pressing portion.

[0010] As a preferred solution of the present invention, the outer side of the rubber ring facing the steel shell abuts against the end face of the opening, and the middle part of the rubber ring facing the steel shell is provided with a boss that cooperates with the opening.

[0011] As a preferred solution of the present invention, an isolation strip is provided between the first electrode tab and the nickel strip.

[0012] Compared with the prior art, the detachable lithium battery of the present invention has the following advantages:

[0013] Beneficial effects:

[0014] (1) The detachable lithium battery of the utility model fixes the circuit board through the rubber ring and is fixedly connected to the steel shell at the same time. In combination with the PVC film covering the battery body, the battery packaging structure is firm and reliable. Since the rubber ring and the steel shell are matched and connected, disassembly is convenient. When the battery power is used up, the battery cell can be disassembled, replaced, recycled and reused, which is environmentally friendly and energy-saving.

[0015] (2) Compared with the existing packaging structure on the market that fixes the battery cell inside the steel shell by rolling groove technology, the detachable lithium battery of the utility model fixes the battery cell and circuit board inside the steel shell by rubber ring, and there is no need to make a rolling groove structure on the steel shell, so it will not cause damage to the battery cell body. In addition, it is convenient to disassemble and rework, the structure and process are simple, and the technology and equipment required for production are low, which reduces the equipment maintenance cost and training labor cost;

[0016] (3) The detachable lithium battery of the present invention has strong adaptability. Since the steel shell has no direct effect on the fixation of the battery core, it can be adapted to most electronic cigarette lithium batteries on the market by adjusting the diameter and height of the steel shell.

[0017] (4) The detachable lithium battery of the present invention has strong safety. Since the exhaust hole is provided at the joint of the circuit board and the rubber ring, the inside of the steel shell is connected to the outside world, thereby preventing accidents such as explosion caused by excessive air pressure inside the steel shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments are briefly introduced below.

[0019] Figure 1 An assembly diagram of a detachable lithium battery provided in an embodiment of the present utility model;

[0020] Figure 2 An exploded view of a detachable lithium battery provided in an embodiment of the present utility model;

[0021] Figure 3 A cross-sectional view of a detachable lithium battery provided in an embodiment of the present utility model.

[0022] Markings in the figure:

[0023] Battery cell 1; first tab 11; second tab 12; steel shell 2; opening 21; rubber ring 3; groove 31; boss 32; circuit board 4; positive terminal 41; negative terminal 42; first solder pad 43; second solder pad 44; arc edge 45; straight edge 46; nickel strip 5; PVC film 6; press edge 61; vent 7; isolation strip 8. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 3 As shown, a detachable lithium battery proposed in an embodiment of the present invention includes a battery cell 1, a steel shell 2, a rubber ring 3, a circuit board 4, a nickel strip 5 and a PVC film 6. One end of the steel shell 2 is provided with an opening 21, and the battery cell 1 is arranged in the steel shell 2. The battery cell 1 is provided with a first pole ear 11 and a second pole ear 12, the first pole ear 11 is provided at one end of the battery cell 1, and the second pole ear 12 is provided at the other end of the battery cell 1; the rubber ring 3 is matched with the opening 21, and the side of the rubber ring 3 away from the steel shell 2 is provided with a groove 31; the circuit board 4 is embedded in the groove 31, and the battery cell 1 is provided with a second pole ear 12. The circuit board 4 is provided with a positive terminal 41 and a negative terminal 42 on the side away from the steel shell 2, and the circuit board 4 is provided with a first welding pad 43 connected to the positive terminal 41 and a second welding pad 44 connected to the negative terminal 42 on the side facing the steel shell 2. The first welding pad 43 is welded to the first pole tab 11, the second welding pad 44 is welded to one end of the nickel strip 5, and the other end of the nickel strip 5 is welded to the second pole tab 12; the PVC film 6 is coated on the outside of the steel shell 2 and the rubber ring 3, and the PVC film 6 forms a pressing edge portion 61 on the edge of the circuit board 4 away from the steel shell 2.

[0026] When packaging the battery, first, one end of the nickel ribbon 5 is welded to the second welding pad 44 of the circuit board 4, and the first tab 11 of the battery cell 1 is welded to the first welding pad 43 of the circuit board 4. The length of the nickel ribbon 5 is adjusted, and the other end of the nickel ribbon 5 is welded to the second tab 12 of the battery cell 1 to assemble into a circuit board 4-battery cell 1 structure; then, the rubber ring 3 is inserted from above the circuit board 4 into the center of the battery cell 1 to which the circuit board 4 has been welded, forming an integrated structure of circuit board 4-rubber ring 3-battery cell 1; then, the integrated structure of circuit board 4-rubber ring 3-battery cell 1 is placed inside the steel shell 2, and the positions of the rubber ring 3 and the steel shell 2, and the circuit board 4 and the rubber ring 3 are adapted and fixed; finally, the assembled battery cell 1 is inserted into the PVC film 6, and the PVC film 6 is thermoplastically molded on the outside of the battery.

[0027] Therefore, according to the detachable lithium battery of the embodiment of the present invention, the circuit board 4 is fixed by the rubber ring 3, and is fixedly connected with the steel shell 2 at the same time, and the battery body is covered with the PVC film 6, so that the packaging structure of the battery is firm and reliable; because the rubber ring 3 and the steel shell 2 are matched and connected, it is easy to disassemble. When the battery power is used up, the battery cell 1 can be disassembled, replaced, recycled and reused, which is environmentally friendly and energy-saving; secondly, compared with the existing packaging structure of the market that fixes the battery cell 1 inside the steel shell 2 by rolling groove technology, the packaging structure of the detachable lithium battery is The removable lithium battery fixes the battery core 1 and the circuit board 4 inside the steel shell 2 through the rubber ring 3. There is no need to make a rolling groove structure on the steel shell 2, so it will not cause damage to the main body of the battery core 1. In addition, disassembly and rework are convenient, the structural process is simple, and the technology and equipment required for production are low, which reduces the equipment maintenance cost and training labor cost. In addition, the removable lithium battery has strong adaptability. Since the steel shell 2 has no direct effect on the fixation of the battery core 1, it can be adapted to most electronic cigarette lithium batteries on the market by adjusting the diameter and height of the steel shell 2.

[0028] Exemplarily, an exhaust hole 7 is provided at the joint between the circuit board 4 and the rubber ring 3, so that the inside of the steel shell 2 is connected to the outside world, preventing accidents such as explosions caused by excessive air pressure inside the steel shell 2, and having strong safety.

[0029] Exemplarily, the groove 31 is a circular groove, and the outer periphery of the circuit board 4 is provided with an arc edge 45 and a straight edge 46. The arc edge 45 fits tightly with the groove wall of the groove 31 to achieve a fixed connection between the circuit board 4 and the rubber ring 3; the exhaust hole 7 is formed between the straight edge 46 and the groove wall of the groove 31 to meet the requirement of forming a conductive state between the inside of the steel shell 2 and the outside world.

[0030] Exemplarily, the exhaust hole 7 is not completely covered by the edge pressing portion 61 to ensure smooth exhaust of the exhaust hole 7 .

[0031] Exemplarily, the outer side of the rubber ring 3 facing the steel shell 2 abuts against the end face of the opening 21 to ensure that the rubber ring 3 is accurately assembled in place; the middle part of the rubber ring 3 facing the steel shell 2 is provided with a boss 32 that cooperates with the opening 21, and the outer periphery of the boss 32 can fit tightly with the inner wall of the steel shell 2 to achieve a fixed connection between the rubber ring 3 and the steel shell 2.

[0032] Exemplarily, an isolation tape 8 is provided between the first tab 11 and the nickel strip 5. The isolation tape 8 is made of insulating material and is used to prevent the first tab 11 and the nickel strip 5 from contacting each other during assembly.

[0033] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0034] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A removable lithium battery, characterized in that: The battery comprises a battery cell, a steel shell, a rubber ring, a circuit board, a nickel strip and a PVC film, wherein an opening is provided at one end of the steel shell, the battery cell is arranged in the steel shell, and the battery cell is provided with a first pole ear and a second pole ear, the first pole ear is provided at one end of the battery cell, and the second pole ear is provided at the other end of the battery cell; the rubber ring is cooperated with the opening, and a groove is provided on a side of the rubber ring away from the steel shell; the circuit board is embedded in the groove, and a positive terminal and a negative terminal are provided on a side of the circuit board away from the steel shell, and a first welding pad connected to the positive terminal and a second welding pad connected to the negative terminal are provided on a side of the circuit board facing the steel shell, the first welding pad is welded to the first pole ear, the second welding pad is welded to one end of the nickel strip, and the other end of the nickel strip is welded to the second pole ear; the PVC film is coated on the outside of the steel shell and the rubber ring, and a pressing edge portion is formed on the edge of the circuit board away from the steel shell.

2. A detachable lithium battery according to claim 1, characterized in that: An exhaust hole is provided at the matching position between the circuit board and the rubber ring.

3. A detachable lithium battery according to claim 2, characterized in that: The groove is a circular groove, and the outer periphery of the circuit board is provided with an arc edge and a straight edge. The arc edge is in contact with the groove wall of the groove, and the exhaust hole is formed between the straight edge and the groove wall of the groove.

4. A detachable lithium battery according to claim 2 or 3, characterized in that: The exhaust hole is not completely covered by the edge pressing portion.

5. The detachable lithium battery according to claim 1, wherein: The outer side of the rubber ring facing the steel shell abuts against the end surface of the opening, and the middle part of the rubber ring facing the steel shell is provided with a boss that is matched with the opening.

6. The detachable lithium battery according to claim 1, characterized in that: An isolation zone is provided between the first electrode tab and the nickel strip.

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