CN216749920U

CN216749920U - Low current copper clad aluminum solder strip

Info

Publication number: CN216749920U
Application number: CN202123001346.8U
Authority: CN
Inventors: 陆利斌; 宋建源
Original assignee: Tonyshare Suzhou Electronic Materials Technology Co ltd
Current assignee: Tonyshare Suzhou Electronic Materials Technology Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-14
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a low-current copper clad aluminum solder strip, utilize the portion including the weld part with the light of installing on the weld part top, the bond line is installed to the surface both sides of weld part, arbitrary first protecting band, another are installed to the bonding layer outside surface the second protecting band is installed to the bonding layer outside surface, the thickness dimension of second protecting band is greater than the thickness dimension of first protecting band. The utility model discloses a be provided with a series of structures, the weld part is flat structure, effectively increase welded part's sectional area, thereby can reduce the resistivity of solder strip, effectively reduce the current loss, can adapt to the circuit use of low current, and the inside composite metal structure that adopts copper clad aluminum of solder strip body, manufacturing cost has both been reduced, the conductivity has been improved simultaneously, strengthen its tensile strength, more be favorable to the low current circuit to use, according to the weld part width of processing solder strip, increase the number of light utilization portion, the pertinence improves the reflection of light scope of plane of reflection, improve the light utilization ratio.

Description

Low current copper clad aluminum solder strip

Technical Field

The utility model relates to a weld and take technical field, specifically be a low current copper clad aluminum solder strip.

Background

The photovoltaic solder strip is also called a tinned copper strip or a tinned copper strip, is a current dividing and converging strip and an interconnecting strip, is applied to connection between photovoltaic module cells, and plays an important role in conducting and gathering electricity. The solder strip is an important raw material in the welding process of the photovoltaic module, the quality of the solder strip directly affects the current collection efficiency of the photovoltaic module, and the power of the photovoltaic module is greatly affected.

Because a part of the welding strip is welded on the light receiving surface of the cell, the light incident on the surface of the welding strip cannot be directly utilized by the cell. In order to fully utilize the part of light, a welding strip with a circular or semicircular section is adopted in the market, the arc surface can reflect and reuse the light incident to the surface of the welding strip, but the welding area of the circular welding strip and the battery piece is small, and the welding reliability is poor; the semicircular welding strip has a large welding surface, but has a small section, high resistance and large current loss.

In order to fully utilize light, the front side of the existing photovoltaic welding strip mostly adopts a circular or semicircular welding strip, the arc surface can reflect and reuse the light incident to the surface of the welding strip, but the welding area with a battery piece is smaller, the welding reliability is poor, or the copper-based sectional area is smaller, the resistance is large, and the current loss is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low current copper clad aluminum solder strip to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low-current copper clad aluminum solder strip, includes the welding part and installs the light utilization portion on the welding part top, the bond line is installed to the surface both sides of welding part, arbitrary the first protective band is installed to the bonding layer outside surface, another the second protective band is installed to the bonding layer outside surface, the thickness size of second protective band is greater than the thickness size of first protective band.

Preferably, the welding part comprises a first aluminum core and a first tin-plated layer, the outer side surface of the first aluminum core is wrapped with a first copper strip, and the outer side surface of the first copper strip is wrapped with the first tin-plated layer.

Preferably, the light utilization part comprises a second aluminum core and a second tin-plated layer, the top surface of the first aluminum core is provided with the second aluminum core, the outer side surface of the second aluminum core is coated with a second copper strip, the bottom surface of the second copper strip is connected with the top surface of the first copper strip, the outer side surface of the second copper strip is coated with the second tin-plated layer, and the bottom surface of the second tin-plated layer is connected to the bottom surface of the first tin-plated layer.

Preferably, the top end surface of the first protective band on the two welding bands is movably connected with the top end of the second protective band, and the outer side surfaces of the light utilization parts are close to each other but not in contact.

Preferably, the cross section of the light utilization part is a semicircular structure, and the number of the light utilization parts is two.

Preferably, the number of the light utilization portions is three.

Preferably, the cross section of the light utilization portion is a semi-elliptical shape.

Preferably, the cross section of the welding part is trapezoidal.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this low current copper clad aluminum solder strip, weld part are flat structure, effectively increase the sectional area of welded part to can reduce the resistivity of solder strip, effectively reduce the current loss, can adapt to the circuit use of low current, the inside composite metal structure that adopts copper clad aluminum of solder strip body has both reduced manufacturing cost in addition, has improved the electric conductivity simultaneously, strengthens its tensile strength, more is favorable to the low current circuit to use.

2. This low-current copper clad aluminum solder strip, through bond line with first protecting band and second protecting band and weld part swing joint, when carrying out the rolling to the solder strip, with the top surface of the first protecting band on two solder strips and the top swing joint of second protecting band, make and form stable protective structure between first protecting band and second protecting band and two weld parts, prevent that the light from utilizing the portion to receive the damage in the rolling in-process, when needs use the solder strip, with two solder strips from the middle separation, tear first protecting band and second protecting band.

3. According to the low-current copper clad aluminum solder strip, the number of light utilization parts is increased according to the width of a welding part of the processed solder strip, the light reflection range of a reflecting surface is improved in a targeted manner, and the light utilization rate is improved.

4. According to the low-current copper clad aluminum solder strip, the light reflecting range of the reflecting surface is ensured and the light utilization rate is improved under the condition that the width of the welding part is limited by the oval light utilization part structure according to the width of the welding part of the processed solder strip.

5. The low-current copper-clad aluminum welding strip adopts the welding part with the trapezoidal structure, and the sectional area of the welding part can be further increased, so that the resistivity of the welding strip can be reduced, and the current loss can be effectively reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

fig. 2 is a schematic view of the internal structure of embodiment 1 of the present invention;

fig. 3 is a schematic view of the overall assembly structure of embodiment 1 of the present invention;

fig. 4 is a schematic view of the overall structure of embodiment 2 of the present invention;

fig. 5 is a schematic view of the overall structure of embodiment 3 of the present invention;

fig. 6 is a schematic view of the overall structure of embodiment 4 of the present invention.

In the figure: 1. a weld; 2. a light utilization unit; 3. an adhesive layer; 4. a first guard band; 5. a second guard band; 6. a first aluminum core; 7. a first copper strip; 8. a first tin-plated layer; 9. a second aluminum core; 10. a second copper strip; 11. a second tin-plated layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1 and fig. 2, the low current copper clad aluminum solder strip of the embodiment includes a soldering portion 1 and a light utilization portion 2 installed at the top end of the soldering portion 1, the cross section of the light utilization portion 2 is a semicircular structure, the number of the light utilization portions 2 is two, two sides of the outer surface of the soldering portion 1 are installed with bonding layers 3, a first protective strip 4 is installed on the outer side surface of any bonding layer 3, a second protective strip 5 is installed on the outer side surface of the other bonding layer 3, the thickness of the second protective strip 5 is larger than that of the first protective strip 4, the soldering portion 1 is a flat structure, the cross section area of the soldering portion 1 is effectively increased, thereby the resistivity of the solder strip can be reduced, the current loss can be effectively reduced, the low current circuit can be adapted to use, and the inside of the solder strip body adopts a composite metal structure of copper clad aluminum, which not only reduces the production cost, but also improves the conductivity and enhances the tensile strength, and is more beneficial to the use of low-current circuits.

Specifically, the welding part 1 comprises a first aluminum core 6 and a first tin coating 8, the outer side surface of the first aluminum core 6 is coated with a first copper strip 7, the outer side surface of the first copper strip 7 is coated with the first tin coating 8, the light utilization part 2 comprises a second aluminum core 9 and a second tin coating 11, the top end surface of the first aluminum core 6 is provided with the second aluminum core 9, the outer side surface of the second aluminum core 9 is coated with a second copper strip 10, the bottom end surface of the second copper strip 10 is mutually connected with the top end surface of the first copper strip 7, the outer side surface of the second copper strip 10 is coated with the second tin coating 11, the bottom end surface of the second tin coating 11 is connected to the bottom end surface of the first tin coating 8, the first protective strip 4 and the second protective strip 5 are movably connected with the welding part 1 through an adhesive layer 3, when the butt welding strips are rolled, the top end surface of the first protective strip 4 on the two welding strips is movably connected with the top end of the second protective strip 5, make first guard band 4 and second guard band 5 and two welding portion 1 between form stable protective structure, prevent that light from utilizing portion 2 to receive the damage in the rolling process.

Further, the top end surface of the first protective belt 4 on the two welding belts is movably connected with the top end of the second protective belt 5, the outer side surfaces of the light utilization parts 2 are close to each other but do not contact with each other, when the welding belts are needed to be used, the two welding belts are separated from the middle, and the first protective belt 4 and the second protective belt 5 are torn off.

The using method of the embodiment comprises the following steps: the welding part 1 is of a flat structure, the sectional area of the welding part 1 is effectively increased, so that the resistivity of the welding strip can be reduced, the current loss can be effectively reduced, and the welding strip can be suitable for a low-current circuit;

through bond line 3 with first guard band 4 and

second guard band

5 and 1 swing joint of welding part, when carrying out the rolling to the welding area, with the top surface of the first guard band 4 on two welding areas and the top swing joint of second guard band 5, make and form stable protective structure between first guard band 4 and second guard band 5 and two welding parts 1, prevent that light from utilizing portion 2 to receive the damage in the rolling in-process, when needs use and weld the area, with two welding areas from middle separation, tear off first guard band 4 and second guard band 5.

Example 2

The structure of the building waterproof heat-insulating structure of the embodiment is basically the same as the structure of the low-current copper-clad aluminum solder strip of the embodiment 1, and the difference is that: the number of the light utilization parts 2 is three, and the number of the light utilization parts 2 is increased according to the width of the welding part 1 of the processed welding strip, so that the light reflection range of the reflection surface is improved in a targeted manner, and the light utilization rate is improved (see fig. 4).

Example 3

The structure of the building waterproof heat-insulating structure of the embodiment is basically the same as the structure of the low-current copper-clad aluminum solder strip of the embodiment 1, and the difference is that: the cross section of the light utilization part 2 is semi-elliptical, and according to the width of the welding part 1 of the processed welding strip, the light utilization ratio is improved by the elliptical structure of the light utilization part 2 under the condition that the width of the welding part 1 is limited, and the light reflection range of the reflection surface is ensured (see figure 5).

Example 4

The structure of the building waterproof heat-insulating structure of the embodiment is basically the same as the structure of the low-current copper-clad aluminum solder strip of the embodiment 1, and the difference is that: the cross section of the welding portion 1 is trapezoidal, and the welding portion 1 having the trapezoidal structure can further increase the sectional area of the welding portion 1, thereby reducing the resistivity of the welding strip and effectively reducing the current loss (see fig. 6).

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. 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

1. The utility model provides a low-current copper clad aluminum solder strip, includes welding part (1) and installs light utilization portion (2) on welding part (1) top, its characterized in that: the surface both sides of welding part (1) are installed and are glued layer (3), arbitrary it has first protective band (4) to glue layer (3) outside surface mounting, another it has second protective band (5) to glue layer (3) outside surface mounting, the thickness dimension of second protective band (5) is greater than the thickness dimension of first protective band (4).

2. A low current copper clad aluminium solder strip in accordance with claim 1, wherein: the welding part (1) comprises a first aluminum core (6) and a first tin-plated layer (8), wherein a first copper strip (7) is wrapped on the outer side surface of the first aluminum core (6), and the first tin-plated layer (8) is wrapped on the outer side surface of the first copper strip (7).

3. The low current copper clad aluminum solder strip of claim 2, wherein: the light utilization part (2) comprises a second aluminum core (9) and a second tin-plated layer (11), the top end surface of the first aluminum core (6) is provided with the second aluminum core (9), the outer side surface of the second aluminum core (9) is coated with a second copper strip (10), the bottom end surface of the second copper strip (10) is connected with the top end surface of the first copper strip (7) in an interconnecting mode, the outer side surface of the second copper strip (10) is coated with the second tin-plated layer (11), and the bottom end surface of the second tin-plated layer (11) is connected to the bottom end surface of the first tin-plated layer (8).

4. A low current copper clad aluminium solder strip in accordance with claim 1, wherein: the top end surfaces of the first protective belts (4) on the two welding belts are movably connected with the top end of the second protective belt (5), and the outer side surfaces of the light utilization parts (2) are close to each other.

5. The low current copper clad aluminum solder strip of claim 1, wherein: the cross section of the light utilization part (2) is of a semicircular structure, and the number of the light utilization parts (2) is two.

6. The low current copper clad aluminum solder strip of claim 5, wherein: the number of the light utilization parts (2) is three.

7. The low current copper clad aluminum solder strip of claim 1, wherein: the cross section of the light utilization part (2) is semi-elliptical.

8. The low current copper clad aluminum solder strip of claim 1, wherein: the cross section of the welding part (1) is trapezoidal.