Safer rechargeable battery

Abstract

The utility model relates to the technical field of rechargeable batteries, in particular to a safer rechargeable battery, which comprises a soft package type battery cell, a positive pole ejector pin, a cover cap, a circuit board, a charging terminal assembly arranged on the circuit board, a shell and a charging slot arranged at the top of the cover cap, the anti-shock buffer layer is arranged between the soft package type battery core and the shell, and the positive electrode ejector pin is welded on the circuit board, so that poor contact caused by shaking or collision of the battery in use can be prevented, and the battery is stable and firm in structure and convenient to use; meanwhile, an anti-shock buffer layer is arranged between the soft package type battery cell and the shell, an insulating layer can effectively prevent the soft package type battery cell from expanding to be in contact with the shell to cause short circuit when the soft package type battery cell is collided, a supporting layer can support the internal soft package type battery cell, and it is guaranteed that the soft package type battery cell cannot shake in the using process; and the sponge layer further enhances the anti-shock buffering capability of the internal structure, so that expansion and liquid leakage of the soft package type battery core caused by external collision are prevented, the internal structure is protected from being influenced, and the service life is prolonged.

Description

Technical Field:

[0001] The utility model relates to the technical field of rechargeable batteries, and particularly to a safer rechargeable battery. Background Art:

[0002] At present, the rechargeable batteries on the market include various models. Among them, the D-type No. 1 battery is a relatively common battery in our daily life. Its voltage is 1.5 volts, and the current capacity is about 2800 mAh. Due to its large size, it is usually used in some devices that require a large amount of power, such as flashlights, gas stoves, etc. The existing rechargeable No. 1 battery with a built-in charging interface (for example: Type-C interface) generally consists of a shell, a battery cell, an integrated circuit protection board (PCBA), a plastic shell, a face shell, and a positive terminal. The bottom cover is the output negative electrode of the battery. It can be divided into soft-pack battery cells, steel-shell battery cells, and capacitor battery cells according to different battery cells. The soft-pack battery cell of the existing technology is prone to being bumped during daily use, resulting in internal liquid leakage, and even causing the short circuit of the internal circuit protection board of the rechargeable battery, thus damaging the battery. There is an urgent need for a safer rechargeable battery. Summary of the Invention:

[0003] The purpose of the utility model is to provide a safer rechargeable battery aiming at the deficiencies of the existing technology, which can reduce the impact of external bumps on the internal soft-pack battery cell, protect the internal structure, and is safer to use.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a safer rechargeable battery, including a soft-pack battery cell, a positive top pin, a cap, a circuit board, a charging terminal assembly arranged on the circuit board, a shell, and a charging slot arranged on the top of the cap. The soft-pack battery cell is arranged inside the shell. The cap is inserted into the top of the shell. A top pin socket is arranged on the cap. The bottom of the positive top pin passes through the top pin socket and is welded to the circuit board. The circuit board is clamped to the bottom of the cap and is electrically connected to the soft-pack battery cell. The charging terminal assembly is exposed through the charging slot. An anti-seismic buffer layer is arranged between the soft-pack battery cell and the shell. The anti-seismic buffer layer includes an insulating layer, a support layer, and a sponge layer. The insulating layer, the support layer, and the sponge layer are bonded together from the inside to the outside in the order of the insulating layer, the support layer, and the sponge layer.

[0005] For further improvement of the above solution, the support layer includes a support frame and a steel wire support net. The steel wire support net is arranged on the side of the support frame close to the sponge layer.

[0006] For further improvement of the above solution, the insulating layer is a polyester film.

[0007] A further improvement to the above solution is that a heat-conducting layer is also provided between the insulating layer and the supporting layer.

[0008] A further improvement to the above solution is that the heat-conducting layer is a graphene paper film.

[0009] A further improvement to the above solution is that the insulating layer, the supporting layer, and the sponge layer are adhesively bonded to each other.

[0010] A further improvement to the above solution is that the outer shell and the positive electrode thimble are both made of conductive metal materials, and the cap is made of insulating plastic materials.

[0011] A further improvement to the above solution is that a second sponge layer is provided between the bottom of the soft-pack battery cell and the outer shell.

[0012] The beneficial effects of the present utility model are as follows: The present utility model includes a soft-pack battery cell, a positive electrode thimble, a cap, a circuit board, a charging terminal assembly disposed on the circuit board, an outer shell, and a charging slot disposed on the top of the cap. The soft-pack battery cell is disposed inside the outer shell, the cap is inserted into the top of the outer shell, a thimble socket is provided on the cap, and the bottom of the positive electrode thimble passes through the thimble socket and is welded to the circuit board; the circuit board is snap-fitted to the bottom of the cap and is electrically connected to the soft-pack battery cell; the charging terminal assembly is exposed through the charging slot; a shock-absorbing and buffering layer is provided between the soft-pack battery cell and the outer shell, and the shock-absorbing and buffering layer includes an insulating layer, a supporting layer, and a sponge layer, and the insulating layer, the supporting layer, and the sponge layer are adhesively bonded together in the order of the insulating layer, the supporting layer, and the sponge layer from the inside to the outside.

[0013] In the present utility model, the positive electrode thimble is welded to the circuit board, which can prevent the battery from shaking or colliding during use and causing poor contact, and the structure is stable and firm, which is convenient for use; at the same time, a shock-absorbing and buffering layer is provided between the soft-pack battery cell and the outer shell. The insulating layer can effectively prevent the soft-pack battery cell from expanding and contacting the outer shell and causing a short circuit when being bumped. The supporting layer can support and wrap the internal soft-pack battery cell to ensure that the soft-pack battery cell does not shake during use. The sponge layer further enhances the shock-absorbing and buffering ability of the internal structure, prevents the soft-pack battery cell from expanding and leaking liquid due to external bumps, protects the internal structure from being affected, is safer during use, and at the same time extends the service life. Description of the Drawings:

[0014] Figure 1 It is a schematic structural diagram of the present utility model.

[0015] Figure 2 It is a sectional view of the present utility model.

[0016] Figure 3This is a schematic cross-sectional structure diagram of the anti-seismic buffer layer of the present utility model.

[0017] Explanation of reference numerals in the drawings: Soft-packaged battery cell 1, positive electrode thimble 2, cap 3, thimble socket 31, charging slot 32, circuit board 4, charging terminal assembly 41, outer shell 5, anti-seismic buffer layer 6, insulating layer 61, support layer 62, support frame 621, steel wire support mesh 622, sponge layer 63, heat-conducting layer 64, second sponge layer 7. Specific implementation manner:

[0018] The following further explains the present utility model with reference to the drawings. As Figures 1-3 shown, the present utility model provides a safer rechargeable battery, including a soft-packaged battery cell 1, a positive electrode thimble 2, a cap 3, a circuit board 4, a charging terminal assembly 41 disposed on the circuit board 4, an outer shell 5, and a charging slot 32 disposed on the top of the cap 3. The soft-packaged battery cell 1 is disposed inside the outer shell 5. The cap 3 is inserted into the top of the outer shell 5. A thimble socket 31 is provided on the cap 3. The bottom of the positive electrode thimble 2 passes through the thimble socket 31 and is welded to the circuit board 4. The circuit board 4 is snap-fitted to the bottom of the cap 3 and is electrically connected to the soft-packaged battery cell 1. The charging terminal assembly 41 is exposed through the charging slot 32. An anti-seismic buffer layer 6 is provided between the soft-packaged battery cell 1 and the outer shell 5. The anti-seismic buffer layer 6 includes an insulating layer 61, a support layer 62, and a sponge layer 63. The insulating layer 61, the support layer 62, and the sponge layer 63 are adhesively bonded together in the order of the insulating layer 61, the support layer 62, and the sponge layer 63 from the inside to the outside. The positive electrode thimble 2 is welded to the circuit board 4, which can prevent the battery from shaking or colliding during use and causing poor contact. The structure is stable and firm, facilitating use. At the same time, an anti-seismic buffer layer 6 is provided between the soft-packaged battery cell 1 and the outer shell 5. The insulating layer 61 can effectively prevent the soft-packaged battery cell 1 from expanding and contacting the outer shell 5 during a collision and causing a short circuit. The support layer 62 can support the internal soft-packaged battery cell 1 to ensure that the soft-packaged battery cell 1 does not shake during use. The sponge layer 63 further enhances the anti-seismic buffer capacity of the internal structure, preventing the soft-packaged battery cell 1 from expanding and leaking liquid due to external collision, protecting the internal structure from being affected, and improving the service life.

[0019] The support layer 62 of the present utility model includes a support frame 621 and a steel wire support mesh 622. The steel wire support mesh 622 is disposed on the side of the support frame 621 close to the sponge layer 63. The support frame 621 has high structural strength and good anti-seismic strength, and the anti-deformation ability of the support frame 621 is greater than that of the steel wire support mesh 622. When the battery is impacted by external collision, the wavy steel wire support mesh 622 first bends and deforms to buffer a part of the impact force, and the remaining impact force acts on the support frame 621, and the support frame 621 buffers another part of the impact force, greatly improving the anti-seismic strength of the battery.

[0020] In this utility model, the insulating layer 61 is a polyester film, which has excellent physical properties, such as high strength, wear resistance, tensile resistance, tear resistance, etc. Moreover, its excellent electrical insulation can effectively prevent the soft-packaged battery cell 1 from expanding and contacting the outer shell 5 when being bumped, thus avoiding short circuit.

[0021] In this utility model, a heat-conducting layer 64 is also provided between the insulating layer 61 and the supporting layer 62. The heat-conducting layer 64 of this utility model is a graphene paper film. When the soft-packaged battery cell 1 is in use, the heat accumulated inside can be conducted and dissipated through the heat-conducting layer 64, ensuring the normal use of the soft-packaged battery cell 1. The graphene paper film has good heat-conducting effect and excellent electrical insulation, further enhancing the heat-dissipating effect and insulation performance.

[0022] In this utility model, the insulating layer 61, the supporting layer 62, and the sponge layer 63 are adhesively bonded together by an adhesive. The adhesive bonds each layer component to each other firmly.

[0023] In this utility model, the outer shell 5 and the positive electrode thimble 2 are both made of conductive metal materials, and the cap 3 is made of insulating plastic materials. The circuit board 4, the soft-packaged battery cell 1 and the outer shell 5 can be electrically connected by wires or conductive sheets. During use, the outer shell 5 is equivalent to the negative electrode of the battery, protecting the inside of the battery while ensuring the conductive effect.

[0024] In this utility model, a second sponge layer 7 is provided between the bottom of the soft-packaged battery cell 1 and the outer shell 5, further improving the anti-seismic and buffering effects and ensuring the normal operation of the internal soft-packaged battery cell 1.

[0025] Of course, the above description is only a preferred embodiment of this utility model. Therefore, all equivalent changes or modifications made according to the structure, features, and principles described in the scope of this utility model patent application are included in the scope of this utility model patent application.

Claims

1. A safer rechargeable battery, characterized in that: It includes a soft-pack battery cell (1), a positive electrode thimble (2), a cap (3), a circuit board (4), a charging terminal assembly (41) arranged on the circuit board (4), a housing (5), and a charging slot (32) arranged on the top of the cap (3). The soft-pack battery cell (1) is arranged inside the housing (5), the cap (3) is inserted into the top of the housing (5), a thimble socket (31) is arranged on the cap (3), and the bottom of the positive electrode thimble (2) passes through the thimble socket (31) and is welded to the circuit board (4); the circuit board (4) is snap-connected to the bottom of the cap (3) and is electrically connected to the soft-pack battery cell (1); the charging terminal assembly (41) is exposed through the charging slot (32); an anti-seismic buffer layer (6) is arranged between the soft-pack battery cell (1) and the housing (5), and the anti-seismic buffer layer (6) includes an insulating layer (61), a support layer (62), and a sponge layer (63). The insulating layer (61), the support layer (62), and the sponge layer (63) are adhesively bonded together in the order of the insulating layer (61), the support layer (62), and the sponge layer (63) from the inside to the outside.

2. A safer rechargeable battery according to claim 1, characterized in that: The support layer (62) includes a support frame (621) and a steel wire support mesh (622), and the steel wire support mesh (622) is arranged on one side of the support frame (621) close to the sponge layer (63).

3. A safer rechargeable battery according to claim 1, characterized in that: The insulating layer (61) is a polyester film.

4. A safer rechargeable battery according to claim 1, characterized in that: A heat-conducting layer (64) is further arranged between the insulating layer (61) and the support layer (62).

5. A safer rechargeable battery according to claim 4, wherein: The heat-conducting layer (64) is a graphene paper film.

6. A safer rechargeable battery according to claim 1, wherein: The insulating layer (61), the support layer (62), and the sponge layer (63) are adhesively bonded to each other through an adhesive.

7. A safer rechargeable battery according to claim 1, wherein: The housing (5) and the positive electrode thimble (2) are both made of conductive metal materials, and the cap (3) is made of insulating plastic materials.

8. A safer rechargeable battery according to claim 1, wherein: A second sponge layer (7) is arranged between the bottom of the soft-pack battery cell (1) and the housing (5).

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