USB rechargeable lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a USB (universal serial bus) rechargeable lithium battery, which comprises a lithium battery and a battery cover arranged at the top of the lithium battery, a positive terminal is arranged at the top of the lithium battery, a negative plate is arranged at the bottom of the lithium battery, and an annular groove is arranged at the top of the lithium battery below the positive terminal. The two ends of the inner wall of the battery cover are provided with protruding parts, a circuit board is fixedly installed at the position, between the protruding parts, in the battery cover, the lithium battery can be inserted into the protruding parts through the annular grooves so that the lithium battery can be fixed to the battery cover, the positive terminal is electrically connected with the circuit board, and the negative terminal is electrically connected with the circuit board. The elastic piece comprises a straight plate, an elastic piece is arranged in the straight plate, a containing groove is formed in the end of the elastic piece, a clamping buckle is arranged on the portion, located behind the elastic piece, of the right cover, the clamping buckle can be connected with the clamping jaw in a clamping mode, and the effect that the left cover and the right cover are fixed is achieved by clamping the clamping jaw through the clamping buckle.

Description

Technical Field

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

[0002] A lithium battery is a battery that stores electrical energy through redox reactions. Lithium ions are used to realize the charging and discharging processes of the battery. During the charging process, lithium ions move from the positive electrode to the negative electrode, and during the discharging process, they move from the negative electrode to the positive electrode to release electrical energy.

[0003] After the discharge process, the lithium battery can be charged to replenish its own power. The USB interface can be used to charge the lithium battery more conveniently. For example, the prior art Chinese patent publication number "CN202616846U" discloses a lithium battery charger with a USB interface, which relates to the technical field of chargers. It includes a lithium battery; it also includes an upper cover, a USB interface and an insulating seat; an insulating seat is arranged above the anode of the lithium battery, the USB interface is installed on the insulating seat, an iron sheet is installed below the insulating seat, the USB interface connects the anode and cathode of the lithium battery through the iron sheet, and the iron sheet connecting the anode and cathode of the lithium battery is separated by an insulator; the upper cover is arranged on the USB interface.

[0004] The top of some lithium batteries is connected to the top cover by a rubber band. The lithium battery and the top cover are fixed by plugging and there is no locking function. In specific operations, if the top cover is accidentally touched and separated from the lithium battery, the USB interface will be exposed and may be damaged, making it unusable. In addition, the rubber band needs to be pulled when disassembling the top cover, which is inconvenient and there is a risk of the rubber band breaking. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a USB rechargeable lithium battery.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A USB rechargeable lithium battery is designed, comprising a battery body and a battery cover provided on the top thereof, wherein a positive terminal is provided on the top of the battery body and a negative electrode sheet is provided on the bottom thereof, an annular groove is provided on the top of the battery body below the positive terminal, protrusions are provided at both ends of the inner wall of the battery cover, a circuit board is fixedly installed between a pair of the protrusions in the battery cover, the battery body can be plugged into the protrusions at the bottom of the battery cover through the annular groove to fix the battery body to the battery cover, and a wire is connected between the circuit board and the negative electrode sheet to form a loop for the battery body;

[0008] The battery cover comprises a left cover and a right cover, both ends of the inner walls of the left cover and the right cover are provided with the protruding parts, and the left cover and the right cover are fixedly connected by a clamping assembly;

[0009] The clamping assembly includes two clamping claws and two elastic sheets. The elastic sheet includes a straight plate. A spring sheet is arranged inside the straight plate. A receiving groove is opened at the end of the spring sheet. The left cover is located behind the elastic sheet and is provided with a buckle, which can clamp the clamping claws.

[0010] Furthermore, the top of the circuit board is electrically connected to a positive electrode cap, and both sides of the positive electrode cap are also electrically connected to an indicator light and a charging interface, and the positive electrode cap, the indicator light and the charging interface all pass through the battery cover.

[0011] Furthermore, a wire is connected to the top wire of the negative electrode sheet in the battery body, the outer periphery of the wire is wrapped with an insulating layer, and the other end of the wire is connected to the bottom wire of the circuit board.

[0012] Furthermore, the two clamping claws and the two elastic sheets are respectively arranged on the facing surfaces of the right cover and the left cover.

[0013] The utility model provides a USB rechargeable lithium battery, which has the beneficial effects that: a clamping assembly is provided between the left cover and the right cover, and the left cover and the right cover are fixed by clamping the clamping claws through the clamping buckle; when the spring sheet is pressed, the clamping claw is pressed by the spring sheet and then disengaged from the clamping buckle, so that the left cover and the right cover can be separated, thereby achieving the effect of facilitating quick disassembly and assembly of the battery body; the USB charging method is adopted without the need for an external charger, thereby increasing the portability of the battery body, making the application range of the battery body wider and suitable for a wider range of people and work equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the lithium battery structure of the utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of area A;

[0016] Figure 3 This is a schematic diagram of the positive electrode cap structure of the utility model;

[0017] Figure 4 is a cross-sectional view of the conductor;

[0018] Figure 5 It is a schematic diagram of the elastic sheet structure of the utility model.

[0019] In the figure: 1. battery body; 2. battery cover; 21. left cover; 22. right cover; 3. positive terminal; 4. negative plate; 5. ring groove; 6. raised part; 7. circuit board; 71. positive cap; 72. indicator light; 73. charging interface; 74. negative connecting plate; 8. snap-fit ​​assembly; 81. claw; 82. elastic plate; 83. straight plate; 84. spring sheet; 85. receiving groove; 86. buckle; 87. bump; 9. wire. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-5 , a USB rechargeable lithium battery, comprising a battery body 1 and a battery cover 2 provided on the top thereof, the battery body 1 having a positive terminal 3 on the top and a negative electrode sheet 4 on the bottom, a ring groove 5 on the top of the battery body 1 located below the positive terminal 3, protrusions 6 on both ends of the inner wall of the battery cover 2, a circuit board 7 fixedly installed between a pair of the protrusions 6 in the battery cover 2, the battery body 1 can be plugged with the protrusions 6 at the bottom of the battery cover 2 through the ring groove 5 to fix the battery body 1 to the battery cover 2, a wire 9 is connected between the circuit board 7 and the negative electrode sheet 4 to form a loop for the battery body 1, the shape of the positive terminal 3 is slightly smaller than the battery body 1, so that after the battery cover 2 is sleeved, it can maintain the same shape as the battery body 1 to facilitate the installation and use of the battery body 1;

[0022] The battery cover 2 includes a left cover 21 and a right cover 22. Both ends of the inner walls of the left cover 21 and the right cover 22 are provided with the protrusions 6. The left cover 21 and the right cover 22 are fixedly connected by a clamping assembly 8. The protrusions 6 can be used to fix the battery body 1 in the battery cover 2 to prevent the battery body 1 from accidentally falling off.

[0023] The clamping assembly 8 includes two clamping claws 81 and two elastic sheets 82. The elastic sheet 82 includes a straight plate 83. A spring sheet 84 is provided in the straight plate 83. A receiving groove 85 is provided at the end of the spring sheet 84. The left cover 21 is provided with a buckle 86 behind the elastic sheet 82. The buckle 86 can clamp the clamping claw 81. A protrusion 87 is also provided behind the receiving groove 85. The protrusion 87 abuts against the clamping claw 81. After the buckle 86 clamps the clamping claw 81, it is inconvenient to separate the two. However, by pressing the spring sheet 84 so that the protrusion 87 squeezes the clamping claw 81, it can be separated from the buckle 86, thereby achieving the effect of separating the left cover 21 from the right cover 22.

[0024] In detail, the circuit board 7 is also electrically connected to a voltage conversion circuit and a charging control circuit to prevent excessive or insufficient voltage from damaging the battery body. The bottom of the circuit board 7 is electrically connected to a negative electrode connecting piece 74, and the circuit board 7 is electrically connected to the positive terminal 3 through the negative electrode connecting piece 74. A shallow groove is formed at the bottom of the negative electrode connecting piece 74, and the top of the positive terminal 3 can be inserted into the shallow groove to achieve good contact between the battery body 1 and the circuit board 7. The distance between the protrusions 6 is close to the length of the positive terminal 3, so that the battery body 1 can be clamped and fixed to the battery cover 2 through the positive terminal 3.

[0025] Furthermore, the top of the circuit board 7 is electrically connected to a positive cap 71, and the two sides of the positive cap 71 are also electrically connected to an indicator light 72 and a charging interface 73. The positive cap 71, the indicator light 72 and the charging interface 73 all pass through the battery cover 2. The indicator light 72 is electrically connected to the battery body 1 to feedback the remaining power of the battery body 1. The charging interface 73 can be a type-A, type-B or type-C interface.

[0026] In more detail, the wire 9 is arranged in the battery body 1, and the two ends of the wire 9 are respectively connected to the circuit board 7 and the negative electrode sheet 4 wire. The outer periphery of the wire 9 is provided with an insulating layer. The circuit board 7 is connected to the negative electrode sheet 4 wire through the wire 9, so that the battery body 1 forms a loop.

[0027] In general, the two claws 81 and the two elastic sheets 82 are respectively arranged on the facing surfaces of the right cover 22 and the left cover 21. The facing surfaces of the left cover 21 and the right cover 22 are also respectively provided with elastic columns and cylinders. A sliding groove is opened in the cylinder. The cylinder can be inserted into the elastic column through the sliding groove. The cylinder is slightly shorter than the elastic column. The resistance elastic force generated when the cylinder is inserted into the elastic column facilitates better separation of the left cover 21 and the right cover 22.

[0028] Working method: When working, the annular groove 5 between the battery body 1 and the positive terminal 3 is inserted into the raised portion 6 in the left cover 21. After the positive terminal 3 is inserted, it contacts the negative connecting piece 74 at the bottom of the circuit board 7. In addition, the two ends of the wire 9 are also connected to the circuit board 7 and the negative electrode sheet 4 to form a loop of the battery body 1. Then, the right cover 22 uses the buckle 86 to clamp the claw 81 of the left cover 21 to achieve the function of fixing the battery body 1 in the battery cover 2. Then, the spring sheet 84 is pressed so that the protrusion 87 squeezes the claw 81 to separate it from the buckle 86. After the left cover 21 and the right cover 22 are separated, the battery body 1 can be taken out of the battery cover 2.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A USB rechargeable lithium battery, comprising a battery body (1) and a battery cover (2) provided on the top thereof, characterized in that: The top of the battery body (1) is provided with a positive terminal (3), and the bottom thereof is provided with a negative electrode sheet (4); the top of the battery body (1) is provided with an annular groove (5) below the positive terminal (3); the inner wall of the battery cover (2) is provided with raised portions (6) at both ends; a circuit board (7) is fixedly mounted in the battery cover (2) between a pair of the raised portions (6); the battery body (1) can be plugged into the raised portions (6) at the bottom of the battery cover (2) through the annular groove (5) to fix the battery body (1) to the battery cover (2); a wire (9) is connected between the circuit board (7) and the negative electrode sheet (4) to form a circuit for the battery body (1); The battery cover (2) comprises a left cover (21) and a right cover (22), the protrusions (6) being provided at both ends of the inner walls of the left cover (21) and the right cover (22), and the left cover (21) and the right cover (22) are fixedly connected via a snap-fit ​​assembly (8); The clamping assembly (8) comprises two clamping claws (81) and two elastic sheets (82); the elastic sheet (82) comprises a straight plate (83); a spring sheet (84) is arranged inside the straight plate (83); an accommodating groove (85) is formed at the end of the spring sheet (84); the left cover (21) is provided with a buckle (86) at the rear of the elastic sheet (82); the buckle (86) can clamp the clamping claw (81).

2. A USB rechargeable lithium battery according to claim 1, characterized in that: The top of the circuit board (7) is electrically connected to a positive electrode cap (71), and both sides of the positive electrode cap (71) are also electrically connected to an indicator light (72) and a charging interface (73); the positive electrode cap (71), the indicator light (72) and the charging interface (73) all pass through the battery cover (2).

3. A USB rechargeable lithium battery according to claim 1, characterized in that: The lead (9) is arranged in the battery body (1), and two ends of the lead (9) are respectively connected to the circuit board (7) and the lead of the negative electrode sheet (4), and an insulating layer is provided around the outer periphery of the lead (9).

4. A USB rechargeable lithium battery according to claim 1, characterized in that: The two clamping claws (81) and the two elastic sheets (82) are respectively arranged on the facing surfaces of the right cover (22) and the left cover (21).

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