CN220753353U - Connecting sheet with fuse and low-voltage acquisition circuit board of new energy battery - Google Patents
Connecting sheet with fuse and low-voltage acquisition circuit board of new energy battery Download PDFInfo
- Publication number
- CN220753353U CN220753353U CN202322242456.6U CN202322242456U CN220753353U CN 220753353 U CN220753353 U CN 220753353U CN 202322242456 U CN202322242456 U CN 202322242456U CN 220753353 U CN220753353 U CN 220753353U
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- Prior art keywords
- fuse
- sheet
- metal
- tail
- conductive metal
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 88
- 239000002184 metal Substances 0.000 claims abstract description 88
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 9
- 229910052759 nickel Inorganic materials 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 14
- 239000010410 layer Substances 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000002346 layers by function Substances 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- IEQUNHXCJVILJQ-UHFFFAOYSA-N aluminum palladium Chemical compound [Al].[Pd] IEQUNHXCJVILJQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
A connecting sheet with a fused fuse and a low-voltage acquisition circuit board of a new energy battery belong to the technical field of current overload protection in the low-voltage acquisition circuit board of the new energy power battery, and comprise a first conductive metal sheet, wherein the first conductive metal sheet is provided with a first connecting tongue and a first connecting tail; the second conductive metal sheet is provided with a second connecting tongue and a second connecting tail; the first connecting tongue and the second connecting tongue are arranged in opposite directions, and a metal fuse with the diameter of 0.05mm-0.5mm is welded between the first connecting tail and the second connecting tail in an ultrasonic mode. The connecting sheet reduces the material and process cost of the product, integrates the functions of fusing the fuse and the connecting sheet, reduces the dependence on components and nickel materials, and removes the connecting sheet of the SMT related complex production process.
Description
Technical Field
The application belongs to the technical field of current overload protection in a low-voltage acquisition circuit board of a new energy power battery, and particularly relates to a connecting sheet with a fuse and the low-voltage acquisition circuit board of the new energy battery.
Background
In the prior art, a first connection mode of a collection circuit of a low-voltage collection circuit board of a new energy battery adopts a patch fuse element, and the fuse element belongs to the technical field of fuses and is mainly applied to overcurrent protection of a printed circuit board and other circuits. In the paster fuse with the static suppressor function as disclosed in the document 1 with the publication number of CN218447782U, the technical scheme comprises a ceramic substrate, wherein a fuse layer is arranged on the upper surface of the ceramic substrate, the fuse layer comprises a fuse area and an upper electrode, an anti-static functional layer is arranged on the upper surface of the fuse layer, an electrode is further arranged on the upper surface of the ceramic substrate, one end of the electrode is arranged on the upper surface of the anti-static functional layer, an encapsulation layer is encapsulated outside the fuse area and the anti-static functional layer, the encapsulation layer is required to completely cover the fuse area, the fuse area is protected from being damaged in the post-processing process, the upper electrode is used for guiding out the fuse, the upper surface of the encapsulation layer is provided with a marking layer, the side surface and the local lower surface of the ceramic substrate are provided with end electrodes, and the lower surface of the ceramic substrate is provided with side electrodes. As shown in the prior art, the manufacturers of the components design and manufacture the fused fuses into the surface mount device part patterns, the sampling circuit board needs to be manufactured on the voltage sampling circuit in an SMT surface mount mode in the circuit board manufacturing process, and the components have large structural volume and are not suitable for being arranged in the new energy battery pack.
The second connection mode is to realize overload fusion and current overload protection by two modes of integrally etching thin copper wires of the circuit board, and to connect the SMT nickel sheet with CCS serial aluminum palladium by laser welding. The utility model provides a removable collection subassembly and battery module of taking etching fuse FPC of contrast file 2 that publication number is CN216850395U which technical scheme includes: PCB, connector and FPC; the two connectors are respectively arranged at two ends of the PCB and are electrically connected with the PCB; the two ends of the FPC are provided with plug-in parts, and the two plug-in parts are respectively plugged with the corresponding connectors in a replaceable manner; a plurality of circuits are arranged on the FPC, and fuses are etched on each circuit; the two ends of each circuit are respectively positioned at the two plug-in connection parts and are electrically connected with the corresponding connectors. The etching process is complex and costly.
Disclosure of Invention
The utility model aims at solving the existing problems that the flat cable of the FFC cannot bypass and cannot form a fuse inside, and provides a connecting sheet which reduces the cost of product materials and processes, integrates the functions of fusing the fuse and the connecting sheet, reduces the dependence on components and nickel materials and removes the related complex production process of SMT.
In order to achieve the technical purpose, the following technical scheme is provided: a connecting sheet with a fuse wire comprises a first conductive metal sheet, wherein the first conductive metal sheet is provided with a first connecting tongue and a first connecting tail;
the second conductive metal sheet is provided with a second connecting tongue and a second connecting tail;
the first connecting tongue and the second connecting tongue are arranged in opposite directions, and a metal fuse with the diameter of 0.05mm-0.5mm is welded between the first connecting tail and the second connecting tail in an ultrasonic mode.
Ultrasonic pressure welding is adopted between the metal fuse and the conductive metal sheet, and the metal fuse and the metal sheet are connected through ultrasonic high-frequency vibration. In the technical scheme, when the metal is subjected to ultrasonic welding, current is not supplied to the workpiece, a high-temperature heat source is not applied to the workpiece, and the vibration energy of the wire frame is converted into friction work, deformation energy and limited temperature rise between the workpieces under static pressure. The metallurgical bonding between the joints is a solid state weld achieved without melting the parent metal. Therefore, the ultrasonic metal welding machine effectively overcomes the phenomena of splashing, oxidation and the like generated during resistance welding, and can perform single-point welding, multi-point welding and short strip welding on filament or sheet materials of nonferrous metals such as copper, silver, aluminum, nickel and the like.
According to the technical scheme, the patch fuse technology is applied to the acquisition circuit of the low-voltage acquisition circuit board, so that the problems on the layout of the acquisition circuit board, the structural problems of the connecting sheet and the manufacturing problems are required to be overcome. One of ordinary skill in the art will further consider the installation position of the fusing line according to the comparison document 2, and the materials, sizes, shapes, etc. are adopted; the technical scheme overcomes the technical prejudice of the acquisition circuit fusing improvement of the common technicians in the field.
The diameter of the metal fuse in the technical proposal is selected according to the standard of different overload breaking currents in common knowledge. The contact between the welded metal fuse and the first connecting tail or between the welded metal fuse and the second connecting tail tends to be flat, and the welded metal fuse is more fit with the first connecting tail or the second connecting tail.
In an embodiment, a protection mechanism is arranged around the metal fuse, and the protection mechanism comprises an insulating protection film sleeve which covers the metal fuse and extends to the first connection tail and the second connection tail; the solid protection flange is arranged on the side edge of the first connecting tail and/or the second connecting tail and is positioned in the insulating protection film sleeve.
A metal fuse is welded between the two metal connecting sheets, and the structural strength of the metal fuse is weaker. The protection mechanism can protect the structural strength of the joint, and can also provide supporting force for the whole connecting sheet to prevent the whole connecting sheet from being deformed easily.
In an embodiment, the solid protection flange comprises a first extension bar arranged at the left side or the right side of the first connecting tail, and a second extension bar arranged at the right side or the left side of the second connecting tail; the first extending baffle strip and the second extending baffle strip are centrally symmetrical, and the metal fuse is positioned between the first extending baffle strip and the second extending baffle strip.
The solid flange can well protect the metal fuse and can also enable the whole connecting sheet to be better molded.
In an embodiment, the insulating protective film is an insulating material using PI or PET or PEN.
In an embodiment, the metal fuse uses metallic aluminum or metallic copper as a raw material.
In an embodiment, the first conductive sheet metal is a sheet metal of 0.1mm to 0.5mm thickness or a sheet metal of 0.035mm to 0.2mm thickness; and the second conductive metal sheet is a metal aluminum sheet with the thickness of 0.1mm-0.5mm or a metal copper sheet with the thickness of 0.035mm-0.2 mm.
The materials of the first conductive metal sheet and the second conductive metal sheet are matched with the materials to be connected according to the two ends or mixed and matched, so that dependence on components and nickel materials is reduced, and in CCS application in the prior art, aluminum bar welding is considered in welding of a PCB (FPC), and laser welding is adopted, so that a nickel sheet is adopted, but the technical scheme of adopting the laser welding of the nickel sheet is high in cost. The connecting piece can be used for selecting the welding of the copper sheet and the PCB (FPC), and is connected with the aluminum bar by the aluminum sheet, so that the connecting piece is cheaper and more reliable.
In a second aspect, a low-voltage collecting circuit board for a new energy battery includes any one of the connecting pieces having a fuse.
In an embodiment, the device comprises an integrated circuit on the acquisition circuit board, and the connecting sheet is arranged between the integrated circuit and the battery sampling point.
Compared with the prior art, the utility model has the following beneficial effects:
1, copper and aluminum sheets replace nickel sheets in the existing design, so that the cost is reduced;
2, through the ultrasonic welding metal fuse that adopts in this technical scheme, can adopt the lower price, and the more convenient FFC of industrialization replaces FPC circuit board as sampling line.
Drawings
1 a first conductive metal sheet, 11 a first connecting tongue, 12 a first connecting tail, 2 a second conductive metal sheet, 21 a second connecting tongue, 22 a second connecting tail, 3 a metal fuse, 4 a protection mechanism, 41 an insulating protective film sleeve, 42 a solid protective flange,
FIG. 1 is a perspective view of the whole appearance of the technical proposal;
FIG. 2 is a perspective view showing the internal structure of the first embodiment in the reverse side upward direction;
FIG. 3 is a front view of an embodiment of a conductive metal sheet connected to a metal fuse;
FIG. 4 is a rear view of an embodiment of a conductive metal sheet connected to a metal fuse;
FIG. 5 is a front view of a second embodiment of a conductive metal sheet connected to a metal fuse;
FIG. 6 is a back view of a second embodiment of a conductive metal sheet connected to a metal fuse;
Detailed Description
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the first embodiment, as shown in fig. 1, a connecting piece with a fuse is shown in fig. 2, and the internal structure of the connecting piece comprises a first conductive metal sheet 1, wherein a first connecting tongue 11 and a first connecting tail 12 are arranged on the first conductive metal sheet 1;
a second conductive metal sheet 2, wherein a second connection tongue 21 and a second connection tail 22 are arranged on the second conductive metal sheet 2;
the first connecting tongue 11 and the second connecting tongue 21 are arranged in opposite directions, and a metal fuse 3 with the diameter of 0.05mm-0.5mm is welded between the first connecting tail 12 and the second connecting tail 22 through ultrasonic waves.
Wherein the first conductive metal sheet 1 is a metal aluminum sheet with the thickness of 0.1mm-0.5mm or a metal copper sheet with the thickness of 0.035mm-0.2 mm. The second conductive metal sheet 2 is a metal aluminum sheet with the thickness of 0.1mm-0.5mm or a metal copper sheet with the thickness of 0.035mm-0.2 mm.
Wherein, the metal fuse 3 adopts metal aluminum or metal copper as a raw material.
The process principle of ultrasonic welding of the application is that a metal fuse is taken out, the end of the metal fuse is contacted with a first conductive metal sheet 1 to form a joint wedge, the joint wedge is subjected to ultrasonic treatment to form a wedge-shaped joint, then the metal fuse is straightened, sheared at a proper position, then the end of the metal fuse is placed on a second conductive metal sheet 2 after being flattened, and then the joint wedge is subjected to ultrasonic treatment to form the wedge-shaped joint.
In the present embodiment, a protection mechanism 4 is provided around the metal fuse 3, the protection mechanism 4 includes an insulating protection film cover 41,
the insulating protective film cover 41 covers the metal fuse 3 and extends to the first connection tail 12 and the second connection tail 22;
a solid protective rib 42 is provided on the side of the first connection tail 12 and/or the second connection tail 22 and is located in the insulating protective film cover 41.
As shown in fig. 3 and 4, the solid protection rib 42 includes a first extension bar disposed on the left side of the first connection tail 12 and a second extension bar disposed on the right side of the second connection tail 22; the first extension baffle and the second extension baffle are centrally symmetrical, and the metal fuse 3 is positioned between the first extension baffle and the second extension baffle.
In the second embodiment, the solid protection rib 42 shown in fig. 5 and 6 includes a first extension bar disposed on the right side of the first connection tail 12 and a second extension bar disposed on the left side of the second connection tail 22; the first extension baffle and the second extension baffle are centrally symmetrical, and the metal fuse 3 is positioned between the first extension baffle and the second extension baffle.
An embodiment three is a low-voltage acquisition circuit board for a new energy battery, which comprises any one of the connecting sheets provided with the fused fuses in the embodiment one to the embodiment two.
The integrated circuit comprises an integrated circuit on a collection circuit board, and a connecting sheet is arranged between the integrated circuit and a battery sampling point.
The foregoing embodiments are provided for further explanation of the present utility model and are not to be construed as limiting the scope of the present utility model, and some insubstantial modifications and variations of the present utility model, which are within the scope of the utility model, will be suggested to those skilled in the art in light of the foregoing teachings.
Claims (8)
1. A connecting sheet with a fused fuse, which is characterized by comprising a first conductive metal sheet (1), wherein a first connecting tongue (11) and a first connecting tail (12) are arranged on the first conductive metal sheet (1);
a second conductive metal sheet (2), wherein a second connecting tongue (21) and a second connecting tail (22) are arranged on the second conductive metal sheet (2);
the first connecting tongue (11) and the second connecting tongue (21) are arranged in opposite directions, and a metal fuse (3) with the diameter of 0.05-0.5 mm is welded between the first connecting tail (12) and the second connecting tail (22) in an ultrasonic mode.
2. The connecting piece with a fused fuse according to claim 1, characterized in that a protection mechanism (4) is arranged around the metal fuse (3), the protection mechanism (4) comprises an insulating protection film cover (41), the insulating protection film cover (41) covers the metal fuse (3) and extends to the first connecting tail (12) and the second connecting tail (22);
and a solid protection flange (42) which is arranged on the side edge of the first connecting tail (12) and/or the second connecting tail (22) and is positioned in the insulating protection film sleeve (41).
3. The connecting piece with a fused fuse according to claim 2, characterized in that the solid protection rib (42) comprises a first extension bar arranged on the left or right side of the first connecting tail (12), a second extension bar arranged on the right or left side of the second connecting tail (22); the first extension baffle strip and the second extension baffle strip are centrosymmetric, and the metal fuse (3) is positioned between the first extension baffle strip and the second extension baffle strip.
4. A connecting piece with a fuse according to claim 2 or 3, characterized in that the insulating protective film cover (41) is made of one or more of PI, PET, PEN insulating materials.
5. The connecting piece with the fused fuse according to claim 1, characterized in that the metal fuse (3) is a metal aluminum wire or a metal copper wire.
6. The connecting piece with a fused fuse according to claim 1, characterized in that the first conductive metal piece (1) is a metal aluminum piece with a thickness of 0.1mm-0.5mm or a metal copper piece with a thickness of 0.035mm-0.2 mm; and the second conductive metal sheet (2) is a metal aluminum sheet with the thickness of 0.1mm-0.5mm or a metal copper sheet with the thickness of 0.035mm-0.2 mm.
7. A low voltage acquisition circuit board for a new energy battery, comprising the connecting sheet with a fuse according to any one of claims 1 to 6.
8. The low voltage acquisition circuit board of claim 7, comprising an integrated circuit on the acquisition circuit board, wherein the tab is disposed between the integrated circuit and a battery sampling point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242456.6U CN220753353U (en) | 2023-08-21 | 2023-08-21 | Connecting sheet with fuse and low-voltage acquisition circuit board of new energy battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242456.6U CN220753353U (en) | 2023-08-21 | 2023-08-21 | Connecting sheet with fuse and low-voltage acquisition circuit board of new energy battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220753353U true CN220753353U (en) | 2024-04-09 |
Family
ID=90555764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322242456.6U Active CN220753353U (en) | 2023-08-21 | 2023-08-21 | Connecting sheet with fuse and low-voltage acquisition circuit board of new energy battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753353U (en) |
-
2023
- 2023-08-21 CN CN202322242456.6U patent/CN220753353U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |