TWM525004U - Conductive connection piece of lithium battery - Google Patents

Description

Conductive connecting piece for lithium battery

The present invention relates to a conductive connecting piece for a lithium battery, in particular, a charging and discharging device suitable for high-rate and high-current of a lithium battery cell, and ensuring safe use.

At present, the lithium battery core mainly comprises a casing, and the casing is internally provided with an electrolyte solution and a lithium battery core, and the lithium battery core is continuously wound by a positive electrode sheet, a separator film and a negative electrode sheet. Wherein, the positive electrode tab is welded with the positive electrode tab, and the positive electrode tab is welded to the inner wall of the housing to electrically connect the housing to the positive terminal. The negative electrode tab is welded to the negative electrode tab, and the negative electrode tab is welded upward to the bottom of the negative terminal of the housing. In this way, a nut can be respectively screwed through the outer screw of the positive terminal and the top of the negative terminal, and then the different terminals are respectively fixed to output positive and negative power respectively.

However, the above-mentioned negative electrode tab is additionally taken out from the negative electrode sheet and then welded to the bottom of the negative electrode terminal, and the processing procedure is complicated; and the positive electrode tab is welded to the inner wall of the casing and the negative electrode tab is welded to the negative electrode terminal, and the solder joint thereof The quality is not easy to control, and it is often a point-like contact. Therefore, it is easy to cause problems of poor conduction and heat dissipation. It is only suitable for small-current energy storage, and is not suitable for charging and discharging of high-rate and high-current.

In view of this, in order to provide a structure that is different from the conventional technology, and improve The shortcomings described by the creator have accumulated many years of experience and continuous research and development improvements.

One of the purposes of the present invention is to provide a conductive connecting piece for a lithium battery, by bending a bent plate at one end of the integrally formed elongated positioning plate, and vertically bending the structure of the extending plate on at least one side of the bent plate,俾The electrical connection between the extension plate and the core group of the core can be electrically connected in a large area to solve the point contact of the conventional lithium battery cell, the quality of which is difficult to control, resulting in poor conduction and heat dissipation, and only suitable for small The problem of current storage and energy use can effectively conduct electricity and dissipate heat, meet the needs of charging and discharging of high-rate and high-current, and ensure safe use.

One of the purposes of the present invention is to provide a conductive connecting piece for a lithium battery, which can be formed by stamping a substantially flat metal plate to form an elongated positioning plate, a bent plate and at least one extending plate. When the metal plate is used, the area of the waste can be effectively reduced to reduce the production cost.

For the purpose of the above creation, the conductive connecting piece of the lithium battery provided by the present invention comprises an elongated positioning plate, a bent plate and a first extending plate. Wherein the elongated positioning plate has a first end and a second end opposite to the first end, and the elongated positioning plate is electrically connected to one of the terminals of the lithium battery core; the bent plate The second end of the elongated positioning plate is away from the second end, and the angle of the substantially vertical elongated positioning plate extends downward; the first extending plate is from one side of the bent plate away from the side And the angle of the vertical vertical bending plate extends horizontally for electrically connecting with one of the ear groups of the lithium battery cell.

In the implementation, the elongated positioning plate comprises a positioning portion, a bending portion and an extending portion extending in the longitudinal direction, the positioning portion is electrically connected to the wiring assembly of the top of the lithium battery core, and the bending portion is configured by the positioning portion. One end extends horizontally downward at an angle away from the end, so that an accommodation space is formed between the lower portion of the positioning portion and the bent portion; the extension portion is formed by one end of the bent portion Extending horizontally from the direction of the end.

In practice, the present invention further includes a second extension plate extending from the other side of the bent plate in a direction substantially perpendicular to the bent plate, the first extension plate and the second extension plate being parallel to each other.

In one embodiment, one end of the first extension plate has a first guide plate, and one end of the second extension plate has a second guide plate, and the first guide plate and the second guide plate are respectively separated from the first extension plate by a relatively long distance. One end and one end of the second extension plate extend outward.

In practice, the present invention further includes a third extension plate, wherein the bending plate comprises a base portion and at least two convex portions which are parallel to each other and extend downward from a bottom end of the base portion, wherein the first extension plate is formed by a downward convex portion One side of the portion extends in a direction away from the side, and the angle of the substantially vertical lower convex portion extends horizontally; and the third extension plate is from one side of the other lower convex portion away from the side, and is substantially perpendicular to the other The angle of the lower convex portion extends horizontally.

In practice, the creation further includes a fourth extension plate extending from the other side of the other lower convex portion in a direction substantially perpendicular to the other lower convex portion, the third extension plate and the fourth extension The plates are parallel to each other.

In one embodiment, one end of the third extension plate has a third guide plate, and one end of the fourth extension plate has a fourth guide plate, and the third guide plate and the fourth guide plate are respectively separated by a third extension plate One end and one end of the fourth extension plate extend outward.

In order to facilitate a deeper understanding of this creation, it is detailed later:

1‧‧‧Electrical connection piece for lithium battery

2‧‧‧Long positioning plate

21‧‧‧ first end

22‧‧‧ second end

23‧‧‧ Positioning Department

231‧‧‧Perforation

24‧‧‧Bending

241‧‧‧ accommodating space

25‧‧‧Extension

3‧‧‧Folding board

31‧‧‧ base

32, 33‧‧‧ Lower convex

4‧‧‧First extension board

41‧‧‧First guide

5‧‧‧Second extension board

51‧‧‧Second guide

6‧‧‧ Third extension board

61‧‧‧ third guide

7‧‧‧ fourth extension board

71‧‧‧fourth guide

8‧‧‧Metal plate

9‧‧‧Insulating rubber sheet

91‧‧‧Lithium battery core

92‧‧‧Wiring assembly

93‧‧‧ear ear group

Fig. 1 is a perspective view showing the first embodiment of the conductive connecting piece of the lithium battery.

Fig. 2 is a view showing the state of use of the first embodiment of the conductive connecting piece for creating a lithium battery.

Fig. 3 is a perspective view showing the second embodiment of the conductive connecting piece of the lithium battery.

Fig. 4 is a perspective view showing the third embodiment of the conductive connecting piece for creating a lithium battery. .

Please refer to FIG. 1 , which is a first embodiment of the conductive connecting piece 1 for creating a lithium battery, which is formed by bending a long straight metal plate of a straight shape, including an elongated positioning plate 2 . The bent plate 3 and a first extension plate 4 are bent.

The elongated positioning plate 2 is a substantially rectangular flat plate. The elongated positioning plate 2 has a first end 21 and a second end 22 opposite to the first end 21 in the longitudinal direction. The elongate positioning plate 2 includes a positioning portion 23 extending from the longitudinal direction, a bending portion 24 and an extending portion 25, wherein the positioning portion 23 is provided with two through holes 231; the bending portion 24 is One end of the positioning portion 23 is away from the end, and extends horizontally downward at an oblique angle, so that a substantially elongated strip-shaped accommodation space 241 is formed between the bottom surface of the positioning portion 23 and the bent portion 24. And the extension portion 25 is horizontally extended from the bottom end of the bent portion 24 in a direction away from the end.

The bent plate 3 is a vertical plate which is extended from the second end 22 of the elongated positioning plate 2 away from the second end 22 and at an angle of the substantially vertical elongated positioning plate 2. The first extension plate 4 is an elongated vertical plate 4, and the first extension plate 4 is formed by one side of the bending plate 3 away from the side and toward the first end 21 of the elongated positioning plate 2, The angle of the vertical bending plate 3 extends horizontally.

Therefore, as shown in FIG. 2, when an insulating rubber sheet 9 is positioned in the accommodating space 241 between the positioning portion 23 of the elongated positioning plate 2 and the bent portion 24, and the positioning portion 23 and the lithium battery cell When one of the top terminals of the 91 is electrically connected, the first extension 4 can be soldered to the ear set 93 on the side of the lithium battery core 91, so that the first extension 4 and the tab set 93 have a large area. The way forms an electrical connection.

Referring to FIG. 3, which is a second embodiment of the conductive connecting piece 1 for creating a lithium battery, which is different from the first embodiment in that the other side of the bent plate 3 is substantially perpendicular to the bent plate. The direction of 3 extends horizontally to a second extension plate 5, and the first extension plate 4 and the second extension plate 5 are parallel to each other, so that the first extension plate 4 and the second extension plate 5 are respectively welded to the pole of the lithium battery cell 91 side. When the ear set 93 is on, the welding area with the tab set 93 is increased. In addition, one end of the first extension plate 4 has a first guide plate 41, and one end of the second extension plate 5 has a second guide plate 51. The first guide plate 41 and the second guide plate 51 are respectively separated by a relatively distant manner. One end of the first extension plate 4 and one end of the second extension plate 5 extend outward, so that when the ear set 93 on the side of the lithium battery cell 91 is inserted between the first extension plate 4 and the second extension plate 5, it is convenient Work and avoid short circuits due to piercing the tab set 93.

Referring to FIG. 4 , which is a third embodiment of the conductive connecting sheet 1 of the lithium battery, which is different from the first embodiment and the second embodiment in that the bent plate 3 includes a base portion 31 and Two protrusions (32, 33) extending parallel to each other and extending downward from the bottom end of the base portion 31, wherein the first extension plate 4 and the second extension plate 5 are respectively separated from the two sides of one lower convex portion 32 The direction of the two sides, and the angle of the vertical vertical lower convex portion 32 is horizontally extended; and a third extension plate 6 and a fourth extension plate 7 are respectively separated from the two sides by the two sides of the other lower convex portion 33 The direction, and the vertical angle of the other lower convex portion 33 extends horizontally, and the third extension plate 6 and the fourth extension plate 7 are parallel to each other. In addition, one end of the third extension plate 6 has a third guide plate 61, and one end of the fourth extension plate 7 has a fourth guide plate 71, and the third guide plate 61 and the fourth guide plate 71 are respectively separated by a relatively distant manner. One end of the three extension plates 6 and one end of the fourth extension plate 7 extend outward.

Therefore, this creation has the following advantages:

1. The conductive connecting piece of the present invention is integrally formed by stamping a metal plate, and a plurality of extending plates can be electrically connected with the ear group in a large area manner, thereby not only allowing the conductive voltage and current Stable, meet the needs of charging and discharging of high-rate and high-current, and can effectively dissipate heat to increase product life and ensure safe use.

2. The conductive connecting piece of the present invention is integrally formed by stamping a flat metal plate, so that an elongated positioning plate, a bent plate and at least one extension plate are formed, so that the metal plate can be effectively reduced when stamping the metal plate. The area of waste to reduce production costs.

3. One end of the first extension plate and one end of the second extension plate of the creation conductive connecting piece are provided with a first guiding plate and a second guiding plate respectively extending outward, thereby facilitating the operator to place the lithium battery core side The ear set is inserted between the first extension plate and the second extension plate, and can avoid short circuit phenomenon due to piercing the ear group during assembly to ensure safety.

4. A space is formed between the long positioning plate and the bent plate of the conductive connecting piece of the present invention, so that the insulating rubber plate between the lithium battery core and the wiring component can be stably fixed to avoid the movement of the insulating rubber plate, but Make sure it is safe to use.

In summary, according to the content disclosed above, the creation can achieve the intended purpose, providing a charging and discharging use requirement not only for high-rate and high-current, but also effectively improving the conduction and heat dissipation effects, and reducing the production cost. And can ensure the use of safe lithium battery conductive connecting piece, which is of great value in the industry, and proposes a new patent application according to law.

1‧‧‧Electrical connection piece for lithium battery

2‧‧‧Long positioning plate

21‧‧‧ first end

22‧‧‧ second end

23‧‧‧ Positioning Department

231‧‧‧Perforation

24‧‧‧Bending

241‧‧‧ accommodating space

25‧‧‧Extension

3‧‧‧Folding board

4‧‧‧First extension board

Claims (7)

A conductive connecting piece for a lithium battery, comprising: an elongated positioning plate having a first end in a longitudinal direction and a second end opposite to the first end, the elongated positioning plate being provided for a top of a lithium battery cell One of the wiring assemblies is electrically connected; a bent plate is extending from the second end of the elongated positioning plate away from the second end and extending substantially perpendicularly to the angle of the elongated positioning plate; a first extension plate extending horizontally from one side of the bent plate away from the side and toward the first end at an angle substantially perpendicular to the bent plate for providing a tab with the lithium battery cell The group is electrically connected. The conductive connecting piece of the lithium battery of claim 1, wherein the elongated positioning plate comprises a positioning portion extending from the long direction, a bending portion and an extending portion, wherein the positioning portion is provided The connecting component of the top of the lithium battery core is electrically connected, and the bending portion extends horizontally downward from an end of the positioning portion at an angle away from the end, so that the positioning portion and the bending portion are downwardly An accommodating space is formed between the portions; the extension portion extends horizontally from one end of the bent portion in a direction away from the end. The conductive connecting piece of the lithium battery of claim 1 or 2, further comprising a second extending plate, the second extending plate being substantially perpendicular to the bent plate by the other side of the bent plate The direction extends, and the first extension plate and the second extension plate are parallel to each other. The conductive connecting piece of the lithium battery of claim 3, wherein one end of the first extending plate has a first guiding plate, and one end of the second extending plate has a second guiding plate, the first guiding The plate and the second guiding plate extend outward from one end of the first extending plate and one end of the second extending plate, respectively, in a relatively distant manner. The conductive connecting piece for a lithium battery according to claim 1 or 2, further comprising a first a three-folding plate, wherein the bent plate comprises a base portion and at least two convex portions which are parallel to each other and extend downward from a bottom end of the base portion, the first extending plate being separated from one side of a lower convex portion The direction of the side is substantially horizontally extending perpendicularly to the angle of the lower convex portion; and the third extending plate is from one side of the other lower convex portion away from the side, and is substantially perpendicular to the other lower convex portion The angle extends horizontally. The conductive connecting piece of the lithium battery of claim 5, further comprising a fourth extending plate, the fourth extending plate being substantially perpendicular to the other side of the other lower convex portion The convex portion extends in a direction, and the third extension plate and the fourth extension plate are parallel to each other. The conductive connecting piece of the lithium battery of claim 6, wherein one end of the third extending plate has a third guiding plate, and one end of the fourth extending plate has a fourth guiding plate, the third guiding The plate and the fourth guiding plate extend outward from one end of the third extending plate and one end of the fourth extending plate, respectively, in a relatively distant manner.