Power connection terminal of lithium battery

Abstract

The utility model discloses a power connection terminal of a lithium battery, which comprises a fixed seat and a power connection piece, a threaded part is arranged at the lower end of the fixed seat, and a U-shaped part is arranged at the upper end of the fixed seat. The power connection piece is composed of a first elastic arm, a second elastic arm and a connecting part used for connecting the first elastic arm and the second elastic arm, a supporting arm is arranged on the first elastic arm and extends to make contact with the second elastic arm, and a fastening area is formed among the supporting arm, the first elastic arm, the second elastic arm and the connecting part. According to the power connection terminal of the lithium battery, the power connection piece is fixed on the fixed seat in a direct insertion manner, and the fixed seat is detachably connected with the lithium battery pack through the threaded part, so that not only can quick installation be realized, but also later maintenance can be provided. The electric wire is clamped through deformation of the first elastic arm and the connecting part and is fixed in the middle fastening area, so that the phenomenon of poor contact caused by looseness of a welding spot due to external force is avoided.

Description

Technical Field

[0001] The utility model relates to lithium battery technology, in particular to a power connection terminal of a lithium battery. Background Art

[0002] Lithium batteries are becoming more and more popular as a power source. Lithium-ion batteries have gradually become the first choice in the energy field due to their significant advantages such as high energy density, small size, light weight, environmental protection, no pollution, and no memory effect. When manufacturing lithium batteries, multiple lithium batteries need to be assembled, and then connected to external wires through power terminals. If welding is used, good welding technology is required to avoid the phenomenon of breakage between the wires and the power terminals or loose solder joints in the later stage, resulting in poor contact. For this reason, a power terminal that can be easily connected quickly and has a stable structure is needed. Utility Model Content

[0003] In order to solve the defects of the prior art mentioned above, the utility model proposes a power terminal for a lithium battery.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A power terminal for a lithium battery, comprising a fixing seat and a power connection piece, wherein the fixing seat has a threaded portion at the lower end and a U-shaped portion at the upper end, and a receiving area for receiving the power connection piece is provided in the middle of the U-shaped portion.

[0006] The power connection piece consists of a first elastic arm, a second elastic arm and a connecting portion for connecting the first elastic arm and the second elastic arm. The first elastic arm and the second elastic arm are placed in a receiving area, an elastic area is formed between the first elastic arm and the second elastic arm, a supporting arm is provided on the first elastic arm, the supporting arm extends to contact the second elastic arm, and a fastening area is formed between the supporting arm, the first elastic arm, the second elastic arm and the connecting portion.

[0007] In the power terminal of the lithium battery of the utility model, the U-shaped portion is composed of a first fixed arm, a second fixed arm and a fixed portion for connecting the first fixed arm and the second fixed arm, the threaded portion is arranged at the lower end of the fixed portion, a first fixed opening is arranged on the inner wall of the first fixed arm, and a second fixed opening is arranged on the inner wall of the second fixed arm.

[0008] In the power terminal of the lithium battery of the utility model, a limit block is provided on the first elastic arm, and the limit block is placed in the first fixing opening.

[0009] In the power terminal of the lithium battery of the utility model, an arc-shaped arm is provided at the lower end of the second elastic arm, and a positioning portion is provided at the lower end of the arc-shaped arm, and the positioning portion is placed in the second fixing opening.

[0010] In the power connection terminal of the lithium battery of the utility model, a protrusion is provided on the second fixed arm, and a first inclined surface, a contact surface and a second inclined surface are provided on the protrusion.

[0011] In the power terminal of the lithium battery of the utility model, the height of the first fixing arm is lower than the height of the second fixing arm.

[0012] In the power connection terminal of the lithium battery of the utility model, a guide end is provided at the lower end of the first elastic arm.

[0013] The implementation of the lithium battery power terminal of the utility model has the following beneficial effects: the power terminal of the lithium battery fixes the power connection part on the fixing seat by directly inserting it, and the fixing seat is connected to the lithium battery pack in a detachable manner through the threaded part, which can not only achieve rapid installation, but also provide maintenance in the later stage. The wire is clamped by the deformation of the first elastic arm and the connecting part, and is fixed in the middle fastening area, avoiding the loosening of the welding point due to external force, resulting in poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 for Figure 1 The main perspective view;

[0016] Figure 3 for Figure 1 Schematic diagram of the fixed seat structure;

[0017] Figure 4 for Figure 3 A schematic diagram of the structure in another direction;

[0018] Figure 5 for Figure 1 Schematic diagram of the electrical connection structure;

[0019] Figure 6 for Figure 5 Schematic diagram of the structure in another direction. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] like Figures 1 to 6As shown, the power terminal of the lithium battery of the utility model includes a fixing base 1 and a power connection piece 2. The power connection piece 2 is installed on the fixing base 1, and the fixing base 1 is fixed to the lithium battery pack through a threaded portion 3, so that later maintenance and disassembly can be achieved, and a quick connection between the wire and the power connection piece 2 can be achieved without the need for welding, thereby speeding up the connection efficiency and ensuring the power connection quality.

[0022] The fixing seat 1 has a threaded portion 3 at the lower end and a U-shaped portion 4 at the upper end. The middle of the U-shaped portion 4 has an accommodating area 5 for accommodating the electrical connection piece 2. The U-shaped portion 4 is composed of a first fixing arm 6, a second fixing arm 7, and a fixing portion 8 for connecting the first fixing arm 6 and the second fixing arm 7. The threaded portion 3 is arranged at the lower end of the fixing portion 8. The inner wall of the first fixing arm 6 is provided with a first fixing opening 9, and the inner wall of the second fixing arm 7 is provided with a second fixing opening 10.

[0023] The power connection piece 2 is composed of a first elastic arm 11, a second elastic arm 12, and a connecting portion 13 for connecting the first elastic arm 11 and the second elastic arm 12. The first elastic arm 11 and the second elastic arm 12 are placed in the accommodating area 5, and an elastic area 14 is formed between the first elastic arm 11 and the second elastic arm 12. A limit block 15 is provided on the first elastic arm 11, and the limit block 15 is placed in the first fixing opening 9. An arc-shaped arm 16 is provided at the lower end of the second elastic arm 12, and a positioning portion 17 is provided at the lower end of the arc-shaped arm 16, and the positioning portion 17 is placed in the second fixing opening 10.

[0024] A guide end 18 is provided at the lower end of the first elastic arm 11 , and the guide end 18 can be used to guide the first elastic arm 11 on the docking electrical component 2 , so that the first elastic arm 11 is pushed and deformed, thereby facilitating insertion into the accommodating area 5 .

[0025] A support arm 19 is provided on the first elastic arm 11, and the support arm 19 extends to contact the second elastic arm 12, and a fastening area 20 is formed between the support arm 19, the first elastic arm 11, the second elastic arm 12 and the connecting portion 13. The fastening area 20 is used to place the wire therein, and then the first elastic arm 11 and the connecting portion 13 are clamped by pliers, so that the first elastic arm 11 and the connecting portion 13 are deformed, and the support arm 19 is used to clamp the wire in the middle to achieve electrical connection.

[0026] The height of the first fixing arm 6 is lower than that of the second fixing arm 7 , so that the pliers can clamp the first elastic arm 11 and the connecting portion 13 .

[0027] The second fixed arm 7 is provided with a protrusion 21, and the protrusion 21 is provided with a first inclined surface 22, a contact surface 23, and a second inclined surface 24. The first inclined surface 22 can guide the positioning portion 17, so that the arc-shaped arm 16 is deformed by force, then contacts the contact surface 23, enters the second inclined surface 24, and finally enters the second fixed opening 10.

[0028] The power connection piece 2 is fixed in the fixing seat 1 by direct insertion, so as to realize quick installation and accelerate the installation efficiency, and at the same time ensure the connection quality between the wire and the power connection piece 2.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power terminal for a lithium battery, comprising a fixing seat and a power connection member, characterized in that: The fixing seat has a threaded portion at the lower end and a U-shaped portion at the upper end, and a receiving area for receiving the electrical connection member is provided in the middle of the U-shaped portion. The power connection piece consists of a first elastic arm, a second elastic arm and a connecting portion for connecting the first elastic arm and the second elastic arm. The first elastic arm and the second elastic arm are placed in a receiving area, an elastic area is formed between the first elastic arm and the second elastic arm, a supporting arm is provided on the first elastic arm, the supporting arm extends to contact the second elastic arm, and a fastening area is formed between the supporting arm, the first elastic arm, the second elastic arm and the connecting portion.

2. The power terminal of the lithium battery according to claim 1, characterized in that: The U-shaped portion is composed of a first fixed arm, a second fixed arm and a fixed portion for connecting the first fixed arm and the second fixed arm, the threaded portion is arranged at the lower end of the fixed portion, a first fixed opening is arranged on the inner wall of the first fixed arm, and a second fixed opening is arranged on the inner wall of the second fixed arm.

3. The power terminal of the lithium battery according to claim 2, characterized in that: A limiting block is provided on the first elastic arm, and the limiting block is placed in the first fixing opening.

4. The power terminal of the lithium battery according to claim 3, characterized in that: An arc-shaped arm is provided at the lower end of the second elastic arm, and a positioning portion is provided at the lower end of the arc-shaped arm. The positioning portion is placed in the second fixing opening.

5. The power terminal of the lithium battery according to claim 4, characterized in that: The second fixed arm is provided with a protrusion, and the protrusion is provided with a first inclined surface, a contact surface and a second inclined surface.

6. The power terminal of the lithium battery according to claim 5, characterized in that: The height of the first fixing arm is lower than that of the second fixing arm.

7. The power terminal of the lithium battery according to claim 1, characterized in that: A guide end is provided at the lower end of the first elastic arm.

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