Cylindrical battery with compact structure

Abstract

The utility model relates to a cylindrical battery with a compact structure in the technical field of batteries, which comprises a battery cell and a circuit assembly arranged at one end of the battery cell, the circuit assembly comprises a metal cover welded at one end of the battery cell and a protective plate with a circuit unit, and a charging interface is embedded and mounted at one end of the protective plate; an indicating lamp bead is arranged on the protection plate, a positive electrode cap covering the indicating lamp bead is arranged on one side of the protection plate, the positive electrode cap is connected with the protection plate through a plurality of pins arranged in a surrounding mode, and an opening allowing light to penetrate through is formed between every two adjacent pins. The cylindrical battery provided by the utility model is simple and compact in structure, the length of the battery can be effectively reduced, and the cylindrical battery can be conveniently expanded and applied to external equipment. And by reasonably designing the circuit assembly and the protection structure, the stability and the safety of the battery are ensured. Meanwhile, the design of the charging interface and the indicating lamp bead is adopted, so that the battery has a charging function and a state indicating function, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a cylindrical battery with a compact structure. Background Art

[0002] Batteries are commonly used items in life. For example, remote controls, toy cars, etc. often use batteries. Most of the existing batteries are disposable batteries. Once the power is used up, they are discarded. If batteries are used for a long time, the cost is relatively high, and the discarded batteries are likely to pollute the environment. Therefore, rechargeable batteries have emerged. Due to their rechargeable characteristics, they can be recharged after the power is used up, which can greatly save the cost of using batteries.

[0003] In order to ensure the overall structural strength of the existing rechargeable batteries, many structures need to be added to protect one end of the battery with an interface, thereby playing a role in fall protection. However, due to the overly complex added structures, it is not conducive to assembly production, and the excessive battery length is not conducive to popularization and use. Therefore, the utility model proposes a cylindrical battery with a compact structure. Summary of the Invention

[0004] The utility model provides a cylindrical battery with a compact structure to solve the problems mentioned in the above background art.

[0005] The purpose of the utility model is achieved in the following way:

[0006] A cylindrical battery with a compact structure includes a battery core and a circuit assembly arranged at one end of the battery core. The circuit assembly includes a metal cover welded to one end of the battery core and a protection board with a circuit unit. A charging interface is fitted and installed at one end of the protection board; an indicator light bead is arranged on the protection board, and a positive electrode cap covering the indicator light bead is arranged on one side of the protection board. The positive electrode cap is connected to the protection board through a plurality of pins arranged in a surrounding manner. An opening for transmitting light is arranged between adjacent two pins.

[0007] Further, the pin is integrally formed with a branch extending outwards, and the branch is connected to the circuit unit.

[0008] Further, a plastic light-transmitting member for cooperating with the pin is arranged on one side of the protection board.

[0009] Further, the positive electrode cap is provided with a hollow interior.

[0010] Further, it further includes a protection structure for surrounding the circuit assembly.

[0011] Further, the protection structure includes a fixed tray and a negative electrode conductive ring respectively arranged on both sides of the protection board.

[0012] Further, positioning posts for fixing the protection plate are arranged on the fixed tray.

[0013] Further, a hollowed-out groove is arranged in the middle of the fixed tray.

[0014] Further, an insulating gasket is arranged between the fixed tray and the battery cell.

[0015] Further, a heat-shrinkable protective film is wrapped around the outside of the battery.

[0016] The beneficial effects of the present utility model are as follows: Firstly, by fitting the charging interface at one end of the protection plate, while reducing the thickness, the stress center of the charging interface is transferred to the protection plate, thereby reducing the probability of the charging interface becoming loose. And by increasing the thickness of the protection plate, the structural strength of the protection plate with circuit units is increased, reducing the risk of damage.

[0017] Secondly, by arranging the indicator lamp beads in the positive electrode cap and through the openings where multiple pins at the lower end of the positive electrode cap are hollowed out, it not only ensures the stable transmission of current, but also enables the indicator lamp beads to emit light through the openings, so as to facilitate users to observe the working state of the battery. The light emitted by the indicator lamp beads can cover one end of the battery, thereby improving the indication effect of the light and enhancing the practicability. Description of the Drawings

[0018] Figure 1 is an exploded view of a compact cylindrical battery of the present utility model;

[0019] Figure 2 is a structural diagram of a compact cylindrical battery of the present utility model;

[0020] Figure 3 is a cross-sectional view of a compact cylindrical battery of the present utility model;

[0021] In the figures, the reference numerals are respectively: 1 - battery cell, 2 - metal cover, 3 - protection plate, 4 - charging interface, 5 - indicator lamp bead, 6 - positive electrode cap, 601 - pin, 602 - branch, 603 - opening, 7 - plastic light-transmitting member, 8 - fixed tray, 801 - positioning post, 802 - hollowed-out groove, 9 - negative conductive ring, 10 - insulating gasket, 11 - heat-shrinkable protective film, 12 - nickel sheet, 13 - negative conductive sheet. Detailed Embodiments

[0022] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments.

[0023] In this embodiment, with reference to Figures 1 - 3, A structurally compact cylindrical battery in its specific implementation includes a battery cell 1 and a circuit assembly disposed at one end of the battery cell 1. The circuit assembly includes a metal cover 2 welded to one end of the battery cell 1 and a protection board 3 with a circuit unit. A charging interface 4 is fitted and installed at one end of the protection board 3; an indicator light bead 5 is provided on the protection board 3, and a positive electrode cap 6 covering the indicator light bead 5 is provided on one side of the protection board 3. The positive electrode cap 6 is connected to the protection board 3 through a plurality of surrounding pins 601. An opening 603 for transmitting light is provided between adjacent two pins 601.

[0024] Further, the pin 601 is integrally formed with an outwardly extending branch 602, and the branch 602 is connected to the circuit unit. The outwardly extending branch 602 can increase the contact area with the circuit unit to ensure the conductive working efficiency.

[0025] Further, a plastic light-transmitting member 7 for cooperating with the pin 601 is provided on one side of the protection board 3. The plastic light-transmitting member 7 can evenly disperse the light of the indicator light bead 5, improve the lighting effect, and protect the pins 601 of the positive electrode cap 6 from being externally impacted.

[0026] Further, the positive electrode cap 6 is hollowly arranged.

[0027] Further, a protection structure for surrounding the circuit assembly is further included. The protection structure includes a fixed tray 8 and a negative electrode conductive ring 9 respectively disposed on both sides of the protection board 3. The setting of the protection structure further enhances the structural strength and protection ability of the battery. The cooperation of the fixed tray 8 and the negative electrode conductive ring 9 effectively fixes and supports the circuit assembly, and at the same time avoids the risk of circuit short circuit.

[0028] Further, positioning posts 801 for fixing the protection board 3 are provided on the fixed tray 8. The setting of the positioning posts 801 prevents the fixing board from shifting.

[0029] Further, a hollow groove 802 for avoiding the circuit unit is provided in the middle of the fixed tray 8.

[0030] Further, an insulating gasket 10 is provided between the fixed tray 8 and the battery cell 1. The setting of the insulating gasket 10 ensures the safety performance of the battery and avoids potential safety hazards caused by problems such as poor contact or electric leakage.

[0031] Further, the outside of the battery is wrapped with a heat-shrinkable protective film 11.

[0032] In this embodiment, the length of the battery is compressed to 70 millimeters, making it convenient to be adapted and extended for application to external devices. The charging interface 4 adopts a USB Type-C interface.

[0033] In this embodiment, the protection board 3 is connected to the positive electrode of the battery cell 1 through a nickel sheet 12, and the protection board 3 is electrically connected to the positive electrode cap 6 through a circuit unit; the negative electrode of the battery cell 1 is sequentially electrically connected to the circuit unit of the protection board 3 through a metal cover 2 and a negative electrode conductive ring 9. A negative electrode conductive sheet 13 is provided at one end of the battery cell 1 away from the circuit component.

[0034] In the present utility model, the charging interface 4 is fitted at one end of the protection board 3, so that while reducing the thickness, the stress center of gravity of the charging interface 4 is transferred to the protection board 3, thereby reducing the probability of the charging interface 4 becoming loose. By increasing the thickness of the protection board 3, the structural strength of the protection board 3 with the circuit unit is increased, and the risk of breakage is reduced;

[0035] Secondly, the indicator lamp bead 5 is arranged in the positive electrode cap 6, and through the opening 603 formed by the multiple pins 601 at the lower end of the positive electrode cap 6 being hollowed out, it not only ensures the stable transmission of current, but also enables the indicator lamp bead 5 to emit light through the opening 603, so as to facilitate the user to observe the working state of the battery. The light emitted by the indicator lamp bead 5 can cover one end of the battery, thereby improving the indication effect of the light and the practicability.

[0036] A compact cylindrical battery provided by the present utility model has a simple and compact structure, which can effectively reduce the length of the battery and is convenient for expanding and applying to external devices. By reasonably designing the circuit component and the protection structure, the stability and safety of the battery are ensured. At the same time, with the design of the charging interface 4 and the indicator lamp bead 5, the battery has a charging function and a status indication function, improving the convenience of use.

[0037] The above are only preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model is disclosed above in preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, when making some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments of equivalent changes, as long as the content of the technical solution of the present utility model is not departed from, any simple modification, equivalent change and modification made to the above embodiments according to the technical means of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A structurally compact cylindrical battery, comprising an electrode core (1) and a circuit component provided at one end of the electrode core (1), characterized in that: The circuit component includes a metal cover (2) welded to one end of the battery cell (1) and a protection board (3) with a circuit unit. One end of the protection board (3) is fitted with a charging interface (4). An indicator lamp bead (5) is arranged on the protection board (3). A positive electrode cap (6) covering the indicator lamp bead (5) is arranged on one side of the protection board (3). The positive electrode cap (6) is connected to the protection board (3) through a plurality of pins (601) arranged in a surrounding manner. An opening (603) for transmitting light is arranged between two adjacent pins (601).

2. The compact cylindrical battery according to claim 1, wherein: The pin (601) is integrally formed with an outwardly extending branch (602), and the branch (602) is connected to the circuit unit.

3. The compact cylindrical battery according to claim 2, wherein: A plastic light-transmitting member (7) for cooperating with the pin (601) is arranged on one side of the protection board (3).

4. A compact cylindrical battery according to claim 1, characterized in that: The positive electrode cap (6) is hollow.

5. A structurally compact cylindrical battery according to any one of claims 1-4, characterized in that, It further includes a protection structure for surrounding the circuit component.

6. The compact cylindrical battery according to claim 5, wherein: The protection structure includes a fixed tray (8) and a negative electrode conductive ring (9) respectively arranged on both sides of the protection board (3).

7. The compact cylindrical battery according to claim 6, wherein: Positioning posts (801) for fixing the protection board (3) are arranged on the fixed tray (8).

8. A compact cylindrical battery according to claim 6 or 7, characterized in that: A hollowed-out groove (802) is arranged in the middle of the fixed tray (8).

9. The compact cylindrical battery according to claim 8, wherein: An insulating gasket (10) is arranged between the fixed tray (8) and the battery cell (1).

10. The compact cylindrical battery according to claim 5, characterized in that: The outside of the battery is wrapped with a heat-shrinkable protective film (11).

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