CN217062445U - Switching piece and lithium ion battery - Google Patents
Switching piece and lithium ion battery Download PDFInfo
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- CN217062445U CN217062445U CN202220235156.8U CN202220235156U CN217062445U CN 217062445 U CN217062445 U CN 217062445U CN 202220235156 U CN202220235156 U CN 202220235156U CN 217062445 U CN217062445 U CN 217062445U
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- plate
- aluminum plate
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- heat dissipation
- copper plate
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Abstract
The utility model discloses a switching piece and lithium ion battery relates to the battery field. The adapter plate comprises a first plate body, a second plate body and a safety component, wherein one end of the first plate body is in butt joint with one end of the second plate body through the safety component; the safety assembly comprises a first aluminum plate, a heat dissipation copper plate and a second aluminum plate, wherein two opposite ends of the heat dissipation copper plate are connected with respective one ends of the first aluminum plate and the second aluminum plate respectively, one end, far away from the heat dissipation copper plate, of the first aluminum plate is connected with the first sheet body, and one end, far away from the heat dissipation copper plate, of the second aluminum plate is connected with the second sheet body. The utility model provides a switching piece can fuse under the too big condition of electric current, guarantees the security to can balance the temperature between the different positions, promote lithium ion battery's output.
Description
Technical Field
The utility model relates to a battery field particularly, relates to a switching piece and lithium ion battery.
Background
At present, a switching sheet configured for a lithium ion battery on the market generally defines a fusing area with a relatively small flow cross section by punching or forming a notch, so as to ensure that the fusing area is fused due to overhigh temperature under the condition of overlarge current.
Before fusing, the temperature difference between the temperature of the fusing area and other parts of the adapter plate is too large, so that the conductivity of the adapter plate is seriously influenced, and the output power of the lithium ion battery is extremely limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a switching piece, it can fuse under the too big condition of electric current, guarantees the security to can balance the temperature between the different positions, promote lithium ion battery's output.
Another object of the present invention is to provide a lithium ion battery, which has higher output power on the premise of satisfying safety.
The utility model provides a technical scheme:
an adapter plate comprises a first plate body, a second plate body and a safety component, wherein one end of the first plate body is in butt joint with one end of the second plate body through the safety component;
the fuse assembly comprises a first aluminum plate, a heat dissipation copper plate and a second aluminum plate, wherein two opposite ends of the heat dissipation copper plate are respectively connected with the first aluminum plate and one respective end of the second aluminum plate, the first aluminum plate is far away from one end of the heat dissipation copper plate and the first sheet body, and the second aluminum plate is far away from one end of the heat dissipation copper plate and the second sheet body.
Further, the heat dissipation copper is close to the one end of first aluminum plate is provided with first stair structure, first aluminum plate is close to the one end of heat dissipation copper is provided with the second stair structure, first stair structure with the block of second stair structure.
Further, the heat dissipation copper is close to first aluminum plate's one end is provided with first inclined plane, first aluminum plate is close to the one end of heat dissipation copper is provided with the second inclined plane, first inclined plane with the laminating of second inclined plane.
Further, the one end that the heat dissipation copper is close to second aluminum plate is provided with the third stair structure, second aluminum plate is close to the one end of heat dissipation copper is provided with the fourth stair structure, the third stair structure with fourth stair structure block.
Further, the heat dissipation copper is close to the one end of second aluminum plate is provided with the third inclined plane, second aluminum plate is close to the one end of heat dissipation copper is provided with the fourth inclined plane, the third inclined plane with the laminating of fourth inclined plane.
Furthermore, the cross-sectional area of the adapter plate perpendicular to the current direction is smaller than the cross-sectional areas of the first plate body and the second plate body perpendicular to the current direction.
Further, the first aluminum plate, the heat dissipation copper plate and the second aluminum plate are flush with each other on two sides in the thickness direction.
Furthermore, the number of the safety components is multiple, one end of the first sheet body is in butt joint with one end of the second sheet body through the plurality of the safety components, the plurality of the safety components are arranged in a straight line, and a gap exists between every two adjacent safety components.
Further, the dimension of the fuse assembly in the arrangement direction of the first aluminum plate, the heat-radiating copper plate and the second aluminum plate is in the range of 1mm to 10 mm.
The utility model also provides a lithium ion battery, which comprises the adapter plate, wherein the adapter plate comprises a first plate body, a second plate body and a safety component, and one end of the first plate body is butted with one end of the second plate body through the safety component; the fuse assembly comprises a first aluminum plate, a heat dissipation copper plate and a second aluminum plate, wherein two opposite ends of the heat dissipation copper plate are respectively connected with one respective end of the first aluminum plate and one respective end of the second aluminum plate, the first aluminum plate is far away from one end of the heat dissipation copper plate and the first sheet body, and the second aluminum plate is far away from one end of the heat dissipation copper plate and the second sheet body.
Compared with the prior art, the utility model provides a switching piece, first lamellar body and second lamellar body pass through insurance subassembly butt joint, are equivalent to the insurance subassembly and set up in the fusing region of switching piece. The two opposite ends of the heat dissipation copper plate of the safety component are connected with the respective ends of the first aluminum plate and the second aluminum plate respectively, one end, away from the heat dissipation copper plate, of the first aluminum plate is connected with the first sheet body, and one end, away from the heat dissipation copper plate, of the second aluminum plate is connected with the second sheet body. Because first aluminum plate and second aluminum plate's melting point is less than the melting point of heat dissipation copper, can guarantee to fuse when the too big high temperature that leads to of electric current to the electric connection of disconnection first lamellar body and second lamellar body plays the guard action. The heat dissipation copper plate has a good heat conduction effect, the temperature between the safety assembly and the first sheet body and the temperature between the safety assembly and the second sheet body can be balanced, the effect of reducing the temperature difference of different parts of the switching sheet is achieved, and the conductivity of the switching sheet is improved. Therefore, the utility model provides a beneficial effect of switching piece includes: the lithium ion battery can be fused under the condition of overlarge current, the safety is ensured, the temperature between different parts can be balanced, and the output power of the lithium ion battery is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of an interposer according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of the safety assembly of fig. 1.
Icon: 100-an adapter plate; 110-a first sheet; 120-a second panel; 130-a safety component; 131-a first aluminum plate; 132-a heat-dissipating copper plate; 133-second aluminum plate.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solution in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that a product of the present invention is usually placed when used, or orientations or positional relationships that a person skilled in the art usually understands, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be broadly construed, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect through an intermediate medium, and the connection may be internal to the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
Examples
Referring to fig. 1, fig. 1 is a schematic structural diagram of an interposer 100 provided in this embodiment.
The interposer 100 provided in this embodiment includes a first sheet 110, a second sheet 120, and a fuse assembly 130, wherein one end of the first sheet 110 is butted with one end of the second sheet 120 through the fuse assembly 130, which is equivalent to the fuse assembly 130 disposed in a fuse region of the interposer 100, i.e., a cross-sectional area of the interposer 100 perpendicular to a current direction is smaller than cross-sectional areas of the first sheet 110 and the second sheet 120 perpendicular to the current direction.
The fuse assembly 130 functions as the fuse assembly 130 for the contact strip 100, in practical applications, when the lithium ion battery outputs current to the outside, the current flows from the first sheet body 110 to the second sheet body 120 through the fuse assembly 130, and when the current is too large, the fuse assembly 130 fuses to disconnect the electrical connection between the first sheet body 110 and the second sheet body 120, thereby playing a role in protection.
In this embodiment, the number of the fuse assemblies 130 is two, and the two fuse assemblies 130 are arranged at intervals in a direction perpendicular to the current direction, which is equivalent to that the interposer 100 forms two fusing regions by drilling. In other embodiments, the number of the safety components 130 can be adjusted according to actual requirements.
Referring to fig. 2, fig. 2 is a cross-sectional view of the safety assembly 130.
Because the melting point of first aluminum plate 131 and second aluminum plate 133 is less than the melting point of heat dissipation copper plate 132, can guarantee to fuse when the too big temperature that leads to of electric current to the electric connection of disconnection first lamellar body 110 and second lamellar body 120 plays the guard action.
The heat-dissipating copper plate 132 has a good heat-conducting effect, and can balance the temperature between the fuse assembly 130 and the first sheet 110 and the second sheet 120, thereby reducing the temperature difference at different positions of the interposer 100 and improving the electrical conductivity of the interposer 100.
In order to improve the heat dissipation effect of the heat dissipation copper plate 132, the contact area between the heat dissipation copper plate 132 and the first aluminum plate 131 and the contact area between the heat dissipation copper plate 132 and the second aluminum plate 133 are increased, in this embodiment, the heat dissipation copper plate 132 is close to one end of the first aluminum plate 131 and is provided with a first step structure, one end of the first aluminum plate 131 is close to the heat dissipation copper plate 132 and is provided with a second step structure, and the first step structure is clamped with the second step structure.
Similarly, the heat dissipation copper plate 132 is close to the one end of second aluminum plate 133 is provided with the third stair structure, the second aluminum plate 133 is close to the one end of heat dissipation copper plate 132 is provided with the fourth stair structure, the third stair structure with the fourth stair structure block.
In other embodiments, other connection structures may be used between the heat-dissipating copper plate 132 and the first aluminum plate 131 and between the heat-dissipating copper plate 132 and the second aluminum plate 133 to increase the contact area, for example, a first inclined surface is disposed at one end of the heat-dissipating copper plate 132 close to the first aluminum plate 131, a second inclined surface is disposed at one end of the first aluminum plate 131 close to the heat-dissipating copper plate 132, and the first inclined surface is attached to the second inclined surface.
Similarly, the heat dissipation copper plate 132 is close to the one end of second aluminum plate 133 sets up the third inclined plane, second aluminum plate 133 is close to the one end of heat dissipation copper plate 132 sets up the fourth inclined plane, the third inclined plane with the laminating of fourth inclined plane.
In this embodiment, in order to ensure smooth conduction of current, the first aluminum plate 131, the heat-dissipating copper plate 132, and the second aluminum plate 133 are flush with each other on both sides in the thickness direction. Referring to fig. 1 and 2, the fuse assembly 130 composed of the first aluminum plate 131, the heat-dissipating copper plate 132 and the second aluminum plate 133 has a rectangular plate structure as a whole, and in other embodiments, the fuse assembly 130 may be adjusted to have other shapes according to practical application conditions to adapt to the shapes of the first body 110 and the second body 120.
Regarding the width of the fuse assembly 130, the heat dissipation performance and the safety need to be considered comprehensively, in this embodiment, the width of the fuse assembly 130 is between 1mm and 10mm, that is, the dimension of the fuse assembly 130 in the arrangement direction of the first aluminum plate 131, the heat dissipation copper plate 132 and the second aluminum plate 133 is in the range of 1mm to 10 mm.
It is understood that, in practical applications, the first aluminum plate 131, the heat-dissipating copper plate 132, and the second aluminum plate 133 may be in a flexible state or a hard state.
In practical application, insurance subassembly 130 is in the highest fusing area of adaptor piece 100 temperature, heat dissipation copper plate 132 is showing the heat-conduction ability who promotes insurance subassembly 130, can last effectual heat transfer with fusing area to the relatively lower position of temperature on first lamellar body 110 and the second lamellar body 120 before first aluminum plate 131 or second aluminum plate 133 fusing, and can disperse partly heat in the air, avoid the high temperature to excessively concentrate, promote the holistic temperature equilibrium degree of adaptor piece 100, thereby promote the electric conductive property of adaptor piece 100, and then promote lithium ion battery's output.
Therefore, the interposer 100 provided in this embodiment can be fused under the condition of an excessive current, so as to ensure safety, balance the temperature between different parts, and improve the output power of the lithium ion battery.
The embodiment further provides a lithium ion battery, which includes the interposer 100. Because this interposer 100's insurance subassembly 130 is in the highest fusing area of interposer 100 temperature, heat dissipation copper plate 132 is showing the heat-conduction ability that promotes insurance subassembly 130, can last effectual heat transfer with the fusing area to the position that the temperature is lower on first lamellar body 110 and the second lamellar body 120 before first aluminum plate 131 or second aluminum plate 133 fusing, and can disperse partly heat in the air, avoid the high temperature to concentrate excessively, promote the holistic temperature equilibrium degree of interposer 100, thereby promote interposer 100's electric conductive property. Therefore, the lithium ion battery provided by the embodiment has higher output power on the premise of meeting the safety requirement.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An adapter plate is characterized by comprising a first plate body, a second plate body and a safety component, wherein one end of the first plate body is in butt joint with one end of the second plate body through the safety component;
the fuse assembly comprises a first aluminum plate, a heat dissipation copper plate and a second aluminum plate, wherein two opposite ends of the heat dissipation copper plate are respectively connected with one respective end of the first aluminum plate and one respective end of the second aluminum plate, the first aluminum plate is far away from one end of the heat dissipation copper plate and the first sheet body, and the second aluminum plate is far away from one end of the heat dissipation copper plate and the second sheet body.
2. The interposer as claimed in claim 1, wherein the heat-dissipating copper plate has a first step structure at one end thereof close to the first aluminum plate, and a second step structure at one end thereof close to the heat-dissipating copper plate, and the first step structure is engaged with the second step structure.
3. The interposer as recited in claim 1, wherein the heat-dissipating copper plate has a first inclined surface at an end thereof adjacent to the first aluminum plate, and a second inclined surface at an end thereof adjacent to the heat-dissipating copper plate, and the first inclined surface is attached to the second inclined surface.
4. The interposer as claimed in claim 1, wherein the end of the heat-dissipating copper plate close to the second aluminum plate is provided with a third step structure, the end of the second aluminum plate close to the heat-dissipating copper plate is provided with a fourth step structure, and the third step structure is engaged with the fourth step structure.
5. The interposer as claimed in claim 1, wherein the heat-dissipating copper plate has a third inclined surface at an end thereof close to the second aluminum plate, and a fourth inclined surface at an end thereof close to the heat-dissipating copper plate, and the third inclined surface is attached to the fourth inclined surface.
6. The interposer as recited in any one of claims 1-5, wherein a cross-sectional area of the interposer perpendicular to a direction of current flow is smaller than a cross-sectional area of the first and second pieces perpendicular to the direction of current flow.
7. The interposer as claimed in any one of claims 1 to 5, wherein the first aluminum sheet, the heat-dissipating copper sheet, and the second aluminum sheet are flush on both sides in the thickness direction.
8. The interposer as recited in any one of claims 1 to 5, wherein the number of said safety components is plural, one end of said first sheet is butted against one end of said second sheet through said plurality of safety components, said plurality of safety components are arranged linearly, and a gap exists between two adjacent safety components.
9. The interposer as claimed in any one of claims 1 to 5, wherein the fuse assembly has a dimension in a direction of arrangement of the first aluminum plate, the heat-dissipating copper plate, and the second aluminum plate in a range of 1mm to 10 mm.
10. A lithium ion battery comprising the interposer of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220235156.8U CN217062445U (en) | 2022-01-27 | 2022-01-27 | Switching piece and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220235156.8U CN217062445U (en) | 2022-01-27 | 2022-01-27 | Switching piece and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217062445U true CN217062445U (en) | 2022-07-26 |
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ID=82484502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220235156.8U Active CN217062445U (en) | 2022-01-27 | 2022-01-27 | Switching piece and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217062445U (en) |
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2022
- 2022-01-27 CN CN202220235156.8U patent/CN217062445U/en active Active
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