CN219498124U - CCS assembly, cover plate structure and new energy automobile power battery - Google Patents
CCS assembly, cover plate structure and new energy automobile power battery Download PDFInfo
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- CN219498124U CN219498124U CN202320410350.XU CN202320410350U CN219498124U CN 219498124 U CN219498124 U CN 219498124U CN 202320410350 U CN202320410350 U CN 202320410350U CN 219498124 U CN219498124 U CN 219498124U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a CCS assembly, a cover plate structure and a new energy automobile power battery. The CCS component comprises a conductive piece, a first electroless nickel-gold layer and a second electroless nickel-gold layer; the conductive piece comprises a copper foil substrate, a first cover film and a second cover film, wherein the first cover film and the second cover film are respectively attached and pressed on two sides of the copper foil substrate, the first cover film is provided with a first welding exposed opening, the second cover film is provided with a second welding exposed opening, and the outline area of the first welding exposed opening is different from the outline area of the second welding exposed opening; the first electroless nickel gold layer is formed on the surface of the copper foil substrate corresponding to the first welding exposed opening. Because the contour area of the first welding exposed opening is different from that of the second welding exposed opening, the problem that the position of the second electroless nickel-gold layer or the first electroless nickel-gold layer, which is fixed on the aluminum sheet by ultrasonic welding, is easy to break due to stress concentration is avoided, and the reliability of electric connection between the conductive piece and the aluminum sheet is improved.
Description
Technical Field
The utility model relates to the technical field of new energy batteries, in particular to a CCS assembly, a cover plate structure and a new energy automobile power battery.
Background
And the CCS (Cells Contacting System) is used for collecting the voltage or the temperature of the battery cell and serving as a core part of a safety monitoring center of the power battery of the new energy automobile, thereby playing a key role in the safety performance of the new energy automobile.
The traditional CCS assembly comprises an FPC, a plastic structural member and a plurality of copper-aluminum bars, wherein a plurality of collecting ends of the FPC are welded to the corresponding aluminum-copper bars through corresponding nickel plates respectively, and the copper-aluminum bars are electrically connected with a plurality of battery monomers in a one-to-one correspondence mode respectively. When the traditional CCS component is assembled, if a welding pressing device of China patent CN201921652355.3 is adopted for operation, an FPC (flexible printed circuit) is used as a substrate, a metal nickel sheet is attached to the FPC in an SMT patch mode, the metal nickel sheet is fixed on a metal aluminum sheet through laser welding, transmission of voltage acquisition signals between the FPC and the metal aluminum sheet is achieved, and therefore the problem of lower assembly efficiency of products is caused. In addition, when the SMT is attached to the metal nickel sheet, the CCS component is easy to generate the problems of cold joint, off-joint and the like, so that the CCS component has the problem of poor use reliability.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a CCS assembly, a cover plate structure and a new energy automobile power battery which are good in use reliability.
The aim of the utility model is realized by the following technical scheme:
a CCS assembly, comprising:
the conductive piece comprises a copper foil substrate, a first cover film and a second cover film, wherein the first cover film and the second cover film are respectively attached and pressed on two sides of the copper foil substrate, the first cover film is provided with a first welding exposed opening, the second cover film is provided with a second welding exposed opening, and the outline area of the first welding exposed opening is arranged differently from the outline area of the second welding exposed opening;
the first electroless nickel gold layer is formed on the surface of the copper foil substrate corresponding to the first welding exposed opening;
the second electroless nickel gold layer is formed on the surface of the copper foil substrate corresponding to the second welding exposed opening; the second electroless nickel-gold layer or the first electroless nickel-gold layer is used for being fixedly connected to the aluminum sheet by ultrasonic welding.
In one embodiment, the contour area of the first welding exposure opening is larger than the contour area of the second welding exposure opening, and the first electroless nickel gold layer is used for being fixedly connected to the aluminum sheet by ultrasonic welding.
In one embodiment, the first welding exposure is rectangular, square or round.
In one embodiment, the first welding exposure is rectangular, square or round.
In one embodiment, the first electroless nickel-gold layer includes a first nickel plating layer and a first gold plating layer, the first nickel plating layer is formed on the surface of the copper foil substrate through the first soldering bare opening, and the first gold plating layer is formed on the surface of the first nickel plating layer.
In one embodiment, the thickness of the first nickel plating layer is 0.03um to 0.05um, and the thickness of the first gold plating layer is 1um to 5um.
In one embodiment, the second electroless nickel-gold layer includes a second nickel plating layer and a second gold plating layer, the second nickel plating layer is formed on the surface of the copper foil substrate through the second soldering bare opening, and the second gold plating layer is formed on the surface of the second nickel plating layer.
In one embodiment, the thickness of the second nickel plating layer is 0.03um to 0.05um, and the thickness of the second gold plating layer is 1um to 5um.
The utility model provides a apron structure, includes insulating apron, aluminum sheet and arbitrary embodiment above-mentioned CCS subassembly, insulating apron is formed with the constant head tank that is linked together and accomodates the groove, the protruding location rivet post that is equipped with of inner wall of constant head tank, the locating hole has been seted up to the aluminum sheet, the location rivet post is worn to locate in the locating hole, make the aluminum sheet riveting is fixed in insulating apron is last, electrically conductive piece is located accomodate the inslot, second electroless nickel gold layer or first electroless nickel gold layer ultrasonic welding fixed connection in the aluminum sheet.
A new energy automobile power battery comprises the cover plate structure.
Compared with the prior art, the utility model has at least the following advantages:
1) In the CCS component, the first cover film and the second cover film are respectively attached and pressed on the two sides of the copper foil substrate, so that the first cover film and the second cover film are respectively covered on the two sides of the copper foil substrate, and the problem that the copper foil substrate is directly exposed is avoided;
2) Because the first cover film is provided with a first welding exposure opening, the first electroless nickel gold layer is formed on the surface of the copper foil matrix through the first welding exposure opening, and the problem of oxidization caused by the fact that the copper foil matrix is directly exposed in the air is avoided; similarly, a second welding exposed opening is formed in the second covering film, and a second electroless nickel gold layer is formed on the surface of the copper foil substrate through the second welding exposed opening, so that the problem of oxidization caused by the fact that the copper foil substrate is directly exposed in the air is avoided;
3) Because the second chemical nickel-gold layer or the first chemical nickel-gold layer is fixedly connected to the aluminum sheet by ultrasonic welding, the copper foil substrate is electrically connected to the aluminum sheet through the second chemical nickel-gold layer or the first chemical nickel-gold layer, and the copper foil substrate is electrically connected with the aluminum sheet;
4) Because the contour area of the first welding exposed opening is different from that of the second welding exposed opening, the problem that the position of the second electroless nickel-gold layer or the first electroless nickel-gold layer, which is fixed on the aluminum sheet by ultrasonic welding, is easy to break due to stress concentration is avoided, and the reliability of electric connection between the conductive piece and the aluminum sheet is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a cover plate structure according to an embodiment;
FIG. 2 is a schematic view of another view of the cover plate structure shown in FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of the cover plate structure shown in FIG. 2;
fig. 4 is an enlarged schematic view of a portion B of the cover structure shown in fig. 3.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The application provides a CCS component, which comprises a conductive piece, a first electroless nickel-gold layer and a second electroless nickel-gold layer; the conductive piece comprises a copper foil substrate, a first cover film and a second cover film, wherein the first cover film and the second cover film are respectively attached and pressed on two sides of the copper foil substrate, the first cover film is provided with a first welding exposed opening, the second cover film is provided with a second welding exposed opening, and the outline area of the first welding exposed opening is arranged differently from the outline area of the second welding exposed opening; the first electroless nickel gold layer is formed on the surface of the copper foil matrix corresponding to the first welding exposed opening; the second electroless nickel gold layer is formed on the surface of the copper foil matrix corresponding to the second welding exposed opening; the second electroless nickel-gold layer or the first electroless nickel-gold layer is used for being fixedly connected to the aluminum sheet by ultrasonic welding.
In the CCS component, the first cover film and the second cover film are respectively attached and pressed on the two sides of the copper foil substrate, so that the first cover film and the second cover film are respectively covered on the two sides of the copper foil substrate, and the problem that the copper foil substrate is directly exposed is avoided; because the first cover film is provided with a first welding exposure opening, the first electroless nickel gold layer is formed on the surface of the copper foil matrix through the first welding exposure opening, and the problem of oxidization caused by the fact that the copper foil matrix is directly exposed in the air is avoided; similarly, a second welding exposed opening is formed in the second covering film, and a second electroless nickel gold layer is formed on the surface of the copper foil substrate through the second welding exposed opening, so that the problem of oxidization caused by the fact that the copper foil substrate is directly exposed in the air is avoided; because the second chemical nickel-gold layer or the first chemical nickel-gold layer is fixedly connected to the aluminum sheet by ultrasonic welding, the copper foil substrate is electrically connected to the aluminum sheet through the second chemical nickel-gold layer or the first chemical nickel-gold layer, and the copper foil substrate is electrically connected with the aluminum sheet; because the contour area of the first welding exposed opening is different from that of the second welding exposed opening, the problem that the position of the second electroless nickel-gold layer or the first electroless nickel-gold layer, which is fixed on the aluminum sheet by ultrasonic welding, is easy to break due to stress concentration is avoided, and the reliability of electric connection between the conductive piece and the aluminum sheet is improved.
For better understanding of the technical solutions and advantageous effects of the present application, the following details are further described with reference to specific embodiments:
as shown in fig. 1-3, CCS assembly 300 of one embodiment includes a conductive member 310, a first electroless nickel layer 320, and a second electroless nickel layer 330. The conductive member 310 includes a copper foil substrate 312, a first cover film 314 and a second cover film 316, where the first cover film 314 and the second cover film 316 are respectively attached and pressed on two sides of the copper foil substrate 312, so as to prevent the surface of the copper foil substrate 312 from being directly exposed in the air, and make the surface of the copper foil substrate 312 reliably covered with the cover films. Referring to fig. 4, the first cover film 314 is provided with a first welding exposed opening 3142, the second cover film 316 is provided with a second welding exposed opening 3162, and the contour area of the first welding exposed opening 3142 is set differently from the contour area of the second welding exposed opening 3162. A first electroless nickel layer 320 is formed on the surface of the copper foil substrate 312 corresponding to the first solder exposure opening 3142. A second electroless nickel layer 330 is formed on the surface of the copper foil substrate 312 corresponding to the second solder exposure opening 3162. The second electroless nickel-gold layer 330 or the first electroless nickel-gold layer 320 is fixedly connected to the aluminum sheet 200 by ultrasonic welding.
In the CCS assembly 300, the first cover film 314 and the second cover film 316 are respectively attached and pressed on the two sides of the copper foil substrate 312, so that the first cover film 314 and the second cover film 316 are respectively covered on the two sides of the copper foil substrate 312, thereby avoiding the problem that the copper foil substrate 312 is directly exposed; because the first cover film 314 is provided with the first welding exposed opening 3142, the first electroless nickel gold layer 320 is formed on the surface of the copper foil substrate 312 through the first welding exposed opening 3142, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided; similarly, the second cover film 316 is provided with a second welding exposed opening 3162, and the second electroless nickel gold layer 330 is formed on the surface of the copper foil substrate 312 through the second welding exposed opening 3162, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided; because the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is fixedly connected to the aluminum sheet 200 by ultrasonic welding, the copper foil substrate 312 is electrically connected to the aluminum sheet 200 by the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320, so that the copper foil substrate 312 is electrically connected to the aluminum sheet 200, compared with the traditional combination mode of SMT and laser welding, the assembly efficiency can be improved, the problems of cold joint, false joint, desoldering and the like can be avoided, and the use reliability of the CCS assembly 300 is improved; because the contour area of the first welding exposure port 3142 is different from the contour area of the second welding exposure port 3162, the problem that the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is easily broken due to stress concentration at the position where the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is ultrasonically welded and fixed on the aluminum sheet 200 is avoided, and the reliability of the electrical connection between the conductive member 310 and the aluminum sheet 200 is improved.
As shown in fig. 1 to 4, in one embodiment, the contour area of the first welding exposure hole 3142 is larger than the contour area of the second welding exposure hole 3162, and the first electroless nickel-gold layer 320 is used for being fixedly connected to the aluminum sheet 200 by ultrasonic welding, so that the conductive member 310 and the aluminum sheet 200 are better welded and fixed, and the reliability of the electrical connection between the conductive member 310 and the aluminum sheet 200 is improved.
As shown in fig. 1 to 4, in one embodiment, the first welding exposure 3142 has a rectangular or square or round shape. In this embodiment, the first welding exposed opening 3142 is square, so that the structure of the first welding exposed opening 3142 is relatively simple and easy to be formed.
As shown in fig. 1 to 4, in one embodiment, the first welding exposure 3142 has a rectangular or square or round shape. In this embodiment, the second welding exposed opening 3162 is square, so that the structure of the second welding exposed opening 3162 is relatively simple and easy to be formed.
In one embodiment, the first electroless nickel/gold layer 320 includes a first nickel plating layer and a first gold plating layer, the first nickel plating layer is formed on the surface of the copper foil substrate 312 through the first soldering bare port 3142, and the first gold plating layer is formed on the surface of the first nickel plating layer, so as to better perform oxidation protection on the surface of the copper foil substrate 312. In this embodiment, the thickness of the first nickel plating layer is 0.03um to 0.05um, and the thickness of the first gold plating layer is 1um to 5um.
In one embodiment, the second electroless nickel/gold layer 330 includes a second nickel plating layer and a second gold plating layer, the second nickel plating layer is formed on the surface of the copper foil substrate 312 through the second soldering bare port 3162, and the second gold plating layer is formed on the surface of the second nickel plating layer, so as to better perform oxidation protection on the surface of the copper foil substrate 312. In this embodiment, the thickness of the second nickel plating layer is 0.03um to 0.05um, and the thickness of the second gold plating layer is 1um to 5um.
As shown in fig. 1 to 4, the present application further provides a cover plate structure 10, which comprises an insulating cover plate (not shown), an aluminum sheet 200 and the CCS assembly 300 according to any of the foregoing embodiments, wherein the insulating cover plate is formed with a positioning slot and a receiving slot that are communicated, a positioning rivet column is protruding on an inner wall of the positioning slot, the aluminum sheet 200 is provided with a positioning hole 210, and the positioning rivet column is inserted into the positioning hole, so that the aluminum sheet 200 is riveted and fixed on the insulating cover plate. The conductive member 310 is located in the receiving groove, so that the conductive member 310 is received on the insulating cover plate.
In one embodiment, CCS assembly 300 includes a conductive member 310, a first electroless nickel layer 320, and a second electroless nickel layer 330. The conductive member 310 includes a copper foil substrate 312, a first cover film 314 and a second cover film 316, where the first cover film 314 and the second cover film 316 are respectively attached and pressed on two sides of the copper foil substrate 312, so as to prevent the surface of the copper foil substrate 312 from being directly exposed in the air, and make the surface of the copper foil substrate 312 reliably covered with the cover films. The first cover film 314 is provided with a first welding exposed opening 3142, the second cover film 316 is provided with a second welding exposed opening 3162, and the contour area of the first welding exposed opening 3142 is different from the contour area of the second welding exposed opening 3162. A first electroless nickel layer 320 is formed on the surface of the copper foil substrate 312 corresponding to the first solder exposure opening 3142. A second electroless nickel layer 330 is formed on the surface of the copper foil substrate 312 corresponding to the second solder exposure opening 3162. The second electroless nickel-gold layer 330 or the first electroless nickel-gold layer 320 is fixedly connected to the aluminum sheet 200 by ultrasonic welding.
In the cover structure 10, the first cover film 314 and the second cover film 316 are respectively attached and pressed on the two sides of the copper foil substrate 312, so that the first cover film 314 and the second cover film 316 are respectively covered on the two sides of the copper foil substrate 312, thereby avoiding the problem that the copper foil substrate 312 is directly exposed; because the first cover film 314 is provided with the first welding exposed opening 3142, the first electroless nickel gold layer 320 is formed on the surface of the copper foil substrate 312 through the first welding exposed opening 3142, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided; similarly, the second cover film 316 is provided with a second welding exposed opening 3162, and the second electroless nickel gold layer 330 is formed on the surface of the copper foil substrate 312 through the second welding exposed opening 3162, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided; because the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is fixedly connected to the aluminum sheet 200 by ultrasonic welding, the copper foil substrate 312 is electrically connected to the aluminum sheet 200 by the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320, so that the copper foil substrate 312 is electrically connected to the aluminum sheet 200, compared with the traditional combination mode of SMT and laser welding, the assembly efficiency can be improved, the problems of cold joint, false joint, desoldering and the like can be avoided, and the use reliability of the CCS assembly 300 is improved; because the contour area of the first welding exposure port 3142 is different from the contour area of the second welding exposure port 3162, the problem that the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is easily broken due to stress concentration at the position where the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is ultrasonically welded and fixed on the aluminum sheet 200 is avoided, and the reliability of the electrical connection between the conductive member 310 and the aluminum sheet 200 is improved.
As shown in fig. 1 to 4, further, the aluminum sheet 200 is further formed with a weld fixture 220, and the second electroless nickel-gold layer 330 or the first electroless nickel-gold layer 320 is fixedly connected to the weld fixture 220 by ultrasonic welding.
The application also provides a new energy automobile power battery, which comprises the cover plate structure 10. As shown in fig. 1 to 4, the cover structure 10 includes an insulating cover, an aluminum sheet 200, and CCS assemblies 300. Wherein, insulating apron is formed with the constant head tank and accomodates the groove that are linked together, the protruding location post of riveting that is equipped with of inner wall of constant head tank, the locating hole has been seted up to aluminum sheet 200, the location post of riveting wears to locate in the locating hole, make aluminum sheet 200 riveting is fixed in on the insulating apron. The conductive member 310 is located in the receiving groove, so that the conductive member 310 is received on the insulating cover plate.
In one embodiment, CCS assembly 300 includes a conductive member 310, a first electroless nickel layer 320, and a second electroless nickel layer 330. The conductive member 310 includes a copper foil substrate 312, a first cover film 314 and a second cover film 316, where the first cover film 314 and the second cover film 316 are respectively attached and pressed on two sides of the copper foil substrate 312, so as to prevent the surface of the copper foil substrate 312 from being directly exposed in the air, and make the surface of the copper foil substrate 312 reliably covered with the cover films. The first cover film 314 is provided with a first welding exposed opening 3142, the second cover film 316 is provided with a second welding exposed opening 3162, and the contour area of the first welding exposed opening 3142 is different from the contour area of the second welding exposed opening 3162. A first electroless nickel layer 320 is formed on the surface of the copper foil substrate 312 corresponding to the first solder exposure opening 3142. A second electroless nickel layer 330 is formed on the surface of the copper foil substrate 312 corresponding to the second solder exposure opening 3162. The second electroless nickel-gold layer 330 or the first electroless nickel-gold layer 320 is fixedly connected to the aluminum sheet 200 by ultrasonic welding.
In the above-mentioned power battery for a new energy automobile, the first cover film 314 and the second cover film 316 are respectively attached and pressed on the two sides of the copper foil substrate 312, so that the first cover film 314 and the second cover film 316 are respectively covered on the two sides of the copper foil substrate 312, thereby avoiding the problem that the copper foil substrate 312 is directly exposed; because the first cover film 314 is provided with the first welding exposed opening 3142, the first electroless nickel gold layer 320 is formed on the surface of the copper foil substrate 312 through the first welding exposed opening 3142, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided; similarly, the second cover film 316 is provided with a second welding exposed opening 3162, and the second electroless nickel gold layer 330 is formed on the surface of the copper foil substrate 312 through the second welding exposed opening 3162, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided; because the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is fixedly connected to the aluminum sheet 200 by ultrasonic welding, the copper foil substrate 312 is electrically connected to the aluminum sheet 200 by the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320, so that the copper foil substrate 312 is electrically connected to the aluminum sheet 200, compared with the traditional combination mode of SMT and laser welding, the assembly efficiency can be improved, the problems of cold joint, false joint, desoldering and the like can be avoided, and the use reliability of the CCS assembly 300 is improved; because the contour area of the first welding exposure port 3142 is different from the contour area of the second welding exposure port 3162, the problem that the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is easily broken due to stress concentration at the position where the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is ultrasonically welded and fixed on the aluminum sheet 200 is avoided, and the reliability of the electrical connection between the conductive member 310 and the aluminum sheet 200 is improved.
Compared with the prior art, the utility model has at least the following advantages:
1) In the CCS assembly 300, the first cover film 314 and the second cover film 316 are respectively attached and pressed on the two sides of the copper foil substrate 312, so that the first cover film 314 and the second cover film 316 are respectively covered on the two sides of the copper foil substrate 312, thereby avoiding the problem that the copper foil substrate 312 is directly exposed;
2) Because the first cover film 314 is provided with the first welding exposed opening 3142, the first electroless nickel gold layer 320 is formed on the surface of the copper foil substrate 312 through the first welding exposed opening 3142, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided; similarly, the second cover film 316 is provided with a second welding exposed opening 3162, and the second electroless nickel gold layer 330 is formed on the surface of the copper foil substrate 312 through the second welding exposed opening 3162, so that the problem of oxidization caused by the fact that the copper foil substrate 312 is directly exposed in the air is avoided;
3) Because the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is fixedly connected to the aluminum sheet 200 by ultrasonic welding, the copper foil substrate 312 is electrically connected to the aluminum sheet 200 by the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320, so that the copper foil substrate 312 is electrically connected to the aluminum sheet 200, compared with the traditional combination mode of SMT and laser welding, the assembly efficiency can be improved, the problems of cold joint, false joint, desoldering and the like can be avoided, and the use reliability of the CCS assembly 300 is improved;
4) Because the contour area of the first welding exposure port 3142 is different from the contour area of the second welding exposure port 3162, the problem that the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is easily broken due to stress concentration at the position where the second electroless nickel gold layer 330 or the first electroless nickel gold layer 320 is ultrasonically welded and fixed on the aluminum sheet 200 is avoided, and the reliability of the electrical connection between the conductive member 310 and the aluminum sheet 200 is improved.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A CCS assembly, comprising:
the conductive piece comprises a copper foil substrate, a first cover film and a second cover film, wherein the first cover film and the second cover film are respectively attached and pressed on two sides of the copper foil substrate, the first cover film is provided with a first welding exposed opening, the second cover film is provided with a second welding exposed opening, and the outline area of the first welding exposed opening is arranged differently from the outline area of the second welding exposed opening;
the first electroless nickel gold layer is formed on the surface of the copper foil substrate corresponding to the first welding exposed opening;
the second electroless nickel gold layer is formed on the surface of the copper foil substrate corresponding to the second welding exposed opening; the second electroless nickel-gold layer or the first electroless nickel-gold layer is used for being fixedly connected to the aluminum sheet by ultrasonic welding.
2. The CCS assembly according to claim 1, wherein a profile area of said first weld exposure is greater than a profile area of said second weld exposure, said first electroless nickel layer being adapted for ultrasonic welding fixedly attached to an aluminum sheet.
3. The CCS assembly according to claim 2, wherein said first weld exposure is rectangular or square or circular in shape.
4. The CCS assembly according to claim 2, wherein said first weld exposure is rectangular or square or circular in shape.
5. The CCS assembly according to claim 1, wherein said first electroless nickel layer includes a first nickel plating layer and a first gold plating layer, said first nickel plating layer being formed on a surface of said copper foil substrate through said first solder exposure, said first gold plating layer being formed on a surface of said first nickel plating layer.
6. The CCS assembly according to claim 5, wherein said first nickel plating layer has a thickness ranging from 0.03um to 0.05um and said first gold plating layer has a thickness ranging from 1um to 5um.
7. The CCS assembly according to claim 1, wherein said second electroless nickel layer includes a second nickel plating layer and a second gold plating layer, said second nickel plating layer being formed on a surface of said copper foil substrate through said second solder exposure, said second gold plating layer being formed on a surface of said second nickel plating layer.
8. The CCS assembly according to claim 7, wherein said second nickel plating layer has a thickness ranging from 0.03um to 0.05um and said second gold plating layer has a thickness ranging from 1um to 5um.
9. The utility model provides a apron structure, its characterized in that includes insulating apron, aluminum sheet and any one of claims 1 to 8 CCS subassembly, insulating apron is formed with the constant head tank that is linked together and accomodates the groove, the protruding location rivet post that is equipped with of inner wall of constant head tank, the locating hole has been seted up to the aluminum sheet, the location rivet post wears to locate in the locating hole, makes the aluminum sheet riveting is fixed in insulating apron is last, electrically conductive piece is located accomodate the inslot, second electroless nickel gold layer or first electroless nickel gold layer ultrasonic welding fixed connection in the aluminum sheet.
10. A new energy automobile power cell comprising the cover structure of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320410350.XU CN219498124U (en) | 2023-03-06 | 2023-03-06 | CCS assembly, cover plate structure and new energy automobile power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320410350.XU CN219498124U (en) | 2023-03-06 | 2023-03-06 | CCS assembly, cover plate structure and new energy automobile power battery |
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| Publication Number | Publication Date |
|---|---|
| CN219498124U true CN219498124U (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320410350.XU Active CN219498124U (en) | 2023-03-06 | 2023-03-06 | CCS assembly, cover plate structure and new energy automobile power battery |
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| Country | Link |
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| CN (1) | CN219498124U (en) |
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2023
- 2023-03-06 CN CN202320410350.XU patent/CN219498124U/en active Active
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