CN217589341U

CN217589341U - Connecting sheet and bridging device for battery interior and battery

Info

Publication number: CN217589341U
Application number: CN202221251572.3U
Authority: CN
Inventors: 沈晓彦; 沙永香; 张慕蓉; 黄金健
Original assignee: Jiangsu Haisida Power Technology Co ltd; Jiangsu New Power Battery & Material Engineering Technology Research Center Co ltd; Jiangsu Haisida Power Supply Co ltd
Current assignee: Jiangsu Haisida Power Technology Co ltd; Jiangsu New Power Battery & Material Engineering Technology Research Center Co ltd; Jiangsu Haisida Power Supply Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-14
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to a structural design technical field of battery discloses a connection piece, bridging device and battery for battery is inside. The connecting piece includes two at least connecting portion and kink, and wherein, two connecting portion are used for being connected with the electrode or the switching piece of the inside utmost point core assembly of battery, and two connecting portion connect in the both ends of kink bendable side is ascending. The bridging device comprises at least one connecting piece and a connecting piece, the connecting part of the connecting piece is used for being connected with the connecting piece or the electrode of the pole group core, and the connecting piece is used for being connected with the electrode of the pole group core or the connecting part. Through the technical scheme, the utility model provides a mode that is used for inside connection piece, bridging device of battery and battery to replace the traditional unable connection piece of buckling through the connection piece that constitutes by two connecting portion and a kink with the design has solved the unable most efficient technical problem who utilizes the battery inner space of traditional connection piece, has improved the efficiency that the battery inner space utilized.

Description

Connecting sheet and bridging device for battery interior and battery

Technical Field

The utility model relates to a structural design technical field of battery specifically relates to a connection piece, bridging device and battery for battery is inside.

Background

The lithium battery has the advantages of long service life, high power, low self-discharge rate and the like, is green and environment-friendly, and does not contain or generate any toxic and harmful heavy metal elements and substances such as lead, mercury, cadmium and the like no matter produced, used and scrapped, so the lithium battery is more and more popular. However, when the lithium battery is applied to automobiles, the requirement on the endurance mileage is increased, and the requirement on the energy density of the battery is higher and higher, so that the reasonable utilization of the space in the battery is particularly important.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can improve the inside space utilization efficiency of battery for overcoming the technical problem that the inside connection piece of battery that prior art exists can't buckle, providing a connection piece, bridging device and battery that is used for the battery inside, this connection piece, bridging device and battery.

In order to achieve the above object, an aspect of the present invention provides a connecting sheet for a battery interior, the connecting sheet includes at least two connecting portions and a bending portion, wherein the two connecting portions are used for being connected with an electrode or an adapter sheet of a battery interior pole core assembly, and the two connecting portions are connected to both ends of the bending portion in a bending direction.

Optionally, the two connecting portions are quadrilateral.

Optionally, the material of one of the connection portions comprises aluminum.

Optionally, the thickness of one of the connection portions ranges from 0.15mm to 2.0mm.

Optionally, in a case where the connecting sheet is not bent, the two connecting portions are located in the same plane, and the bent portion is an arc-shaped surface that takes a parallel line of the plane as an axis.

Optionally, the material of the other of the connection portions comprises copper or nickel.

Optionally, the thickness of the other connecting part ranges from 0.2mm to 2.0mm;

the bending part is a plurality of layers of foils, and the thickness range of each layer of foil is 6-20 μm, so that 180-degree bending is realized.

On the other hand, the utility model provides a bridging device for inside battery, bridging device includes at least one as above-mentioned arbitrary connection piece and switching piece, the connecting portion of connection piece be used for with the electrode connection of switching piece or the inside utmost point core assembly of battery, the switching piece be used for with the inside utmost point core assembly of battery the electrode or connecting portion are connected.

In another aspect, the present invention also provides a battery including the connecting sheet and the battery body as described above, wherein the connecting sheet is used for connecting the electrodes of the battery cell modules in series or in parallel.

In still another aspect, the present invention provides a battery, wherein the battery pack includes the bridging device and the battery body as described above, wherein the bridging device is used for connecting the electrodes of the battery cell stack cores in series or in parallel.

Through the technical scheme, the utility model provides a mode that is used for inside connection piece, bridging device of battery and battery to replace the traditional unable connection piece of buckling through the connection piece that constitutes by two connecting portion and a kink with the design has solved the unable most efficient technical problem who utilizes the battery inner space of traditional connection piece, has improved the efficiency that the battery inner space utilized.

Drawings

Fig. 1 is a front view of a connecting tab for a battery interior according to an embodiment of the present invention;

fig. 2 is a side view of a connecting tab for a battery interior according to an embodiment of the present invention;

fig. 3 is a schematic view of a tab according to an embodiment of the present invention in a state of being connected to an electrode of a battery;

fig. 4 is a schematic view of a connection sheet and an interposer, and an electrode of a pole assembly core according to an embodiment of the present invention;

fig. 5 is a schematic view of a connection state of a connection sheet and an adapter sheet, an electrode of a pole group core, and a cover plate according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a battery according to an embodiment of the present invention.

Description of the reference numerals

1. Connection part 2, connection part

3. Bending part 4 and adapter plate

5. Pole assembly core 6, cover plate

Detailed Description

In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, and bottom" is generally used with respect to the orientation shown in the drawings or the positional relationship between the components in the vertical, or gravitational direction.

In addition, if there is a description in the embodiments of the present invention referring to "first", "second", etc., the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments can be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Fig. 1 is a front view of a connection sheet for battery interior according to an embodiment of the present invention. In this fig. 1, the connecting piece may include at least two connecting portions (connecting portion 1, connecting portion 2) and a bent portion 3. The two connecting

portions

1 or 2 may be used to connect with the electrode 5 or the interposer 4 of the battery, and the two connecting

portions

1 or 2 may be connected to two ends of the bending portion 3 in the bending direction. In this embodiment, since the bending portion 3 can enable the two connecting

portions

1 or 2 to connect the two pole assembly cores 5 or the interposer 4 in two non-identical planes, the hardware stacking scale inside the battery can be increased to a greater extent and the utilization efficiency of the internal space of the battery can be improved compared with the conventional connecting sheet which cannot be bent.

In this embodiment, the specific shape of the two

connection portions

1 or 2 is, although, it may be in various forms known to those skilled in the art, such as circular, square, etc. In consideration of the fact that it is difficult to determine the relative position of the devices to which the two

connection portions

1 or 2 are connected when the connection portions are circular in shape at the time of welding, in a preferred example of the present invention, the

connection portions

1 or 2 may be quadrangular. In the actual welding process, the quadrangle can well indicate the relative position of the current connecting

part

1 or 2 and the connected device through the position relation of the edges and corners, so that the welding precision is improved. Further, in order to facilitate welding, a corrugated rough surface may be provided on the front or rear surface of the

connection portion

1 or 2, thereby facilitating welding positioning.

In this embodiment, as for the specific material of the

connection portion

1 or 2, the material of the

connection portion

1 or 2 may be various materials known to those skilled in the art, including but not limited to aluminum, copper, nickel, etc., on the premise that the conductivity and the soldering are satisfied. In a preferred example of the present invention, the material of the connecting portion 1 may be aluminum, and correspondingly, the thickness thereof may have a value ranging from 0.15mm to 2.0mm. The material of the connecting portion 2 may be copper or nickel, and correspondingly, the thickness thereof may range from 0.2mm to 2.0mm.

In this embodiment, the bending portion 3 may be formed by multiple layers of foils, and the thickness of each layer of foil may range from 6 μm to 20 μm, but is not limited thereto, so as to realize 180 ° bending.

Fig. 2 is a side view of a connection tab for the inside of a battery according to an embodiment of the present invention. In fig. 2, when the connection piece is not bent, the two

connection portions

1 and 2 are located on the same plane, and the bent portion 3 is an arc-shaped surface having a parallel line of the plane as an axis. Due to the structural characteristics of the arc-shaped surfaces, the angle at which the two connecting

parts

1 or 2 can be bent relative to each other is increased to 180 °. In the case where the tab is connected to the battery pole assembly core 5, a schematic view thereof is shown in fig. 3. Fig. 4 shows a schematic view of the connecting sheet connected to the interposer 4 and the pole assembly core 5. Fig. 5 shows a schematic view of the connection piece connected to the interposer 4, the electrode 5, and the cover 6.

On the other hand, the utility model also provides a bridging device for inside the battery. As shown in fig. 3, the bridging device comprises at least one connection and adapter plate 4 as described in any of the above. The connecting

part

1 or 2 of the connecting piece can be used for connecting with the adapter piece 4 or the pole assembly core 5 of the battery, and the adapter piece 4 can be used for connecting with the pole assembly core 5 of the battery or the connecting

part

1 or 2.

In still another aspect, the present invention further provides a battery pack, which may include any one of the connecting sheet 4 and the battery pack body as described above. The tab 4 may be used to connect the electrodes of the respective unit cells in the battery pack in series or in parallel.

In still another aspect, the present invention further provides a battery pack, as shown in fig. 6, which may include the bridging device and the battery pack body as described above. Wherein, the bridging device can be used for connecting the electrodes of each single battery in the battery pack in series or in parallel.

Through the technical scheme, the utility model provides a mode that is used for inside connection piece, bridging device and the group battery of battery to replace the traditional unable connection piece of buckling through the connection piece that constitutes by two connecting portion and a kink with the design has solved the unable most efficient technical problem who utilizes the battery inner space of traditional connection piece, has improved the efficiency that the battery inner space utilized.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a connection piece for inside battery, its characterized in that, the connection piece includes two at least connecting portion and kink, and wherein, two connecting portion are used for being connected with the electrode or the switching piece of the inside utmost point core assembly of battery, and two connecting portion connect in the both ends of kink in the direction of can buckling.

2. A web according to claim 1, wherein the two connecting portions are quadrilateral.

3. A web according to claim 1, wherein the material of one of the connecting portions comprises aluminium.

4. A web according to claim 1, wherein the thickness of one of the connecting portions ranges from 0.15mm to 2.0mm.

5. The connecting sheet according to claim 1, wherein, in a case where the connecting sheet is not bent, the two connecting portions are located in the same plane, and the bent portion is an arc-shaped surface having a parallel line of the plane as an axis.

6. A web according to claim 1, wherein the material of the other of the connecting portions comprises copper or nickel.

7. A web according to claim 1, wherein the thickness of the other of the connecting portions ranges from 0.2mm to 2.0mm;

8. A bridging device for use in a battery, the bridging device comprising at least one tab as claimed in any one of claims 1 to 7 and an interposer, the connection of the tab being for connection to the interposer or an electrode of a battery internal pole stack, the interposer being for connection to an electrode of a battery internal pole stack or the connection.

9. A battery comprising a tab according to any one of claims 1 to 7 for connecting the electrodes of each cell stack in the battery in series or in parallel and a battery body.

10. A battery comprising the bridging device of claim 8 and a battery body, wherein the bridging device is used to connect the electrodes of each cell stack in series or in parallel in the battery.