CN101931184A - Wiring modules for building photovoltaic integrated systems - Google Patents

Abstract

The invention discloses a wiring module of a building photovoltaic integrated system, which comprises: a housing with at least one opening on its surface for inserting a lead terminal electrically connected to the positive and negative poles of a solar cell panel; The first and second conductors in the housing are respectively conductively connected to the lead terminals through the first elastic clip; and a bypass diode is connected to the first and second conductors. Between two electrical conductors, wherein the casing includes multiple cavities, and at least one element among the first and second electrical conductors and the bypass diode is disposed in the different cavities separately from other elements. Due to the design of two or more cavities in the present invention, the processing difficulty of the wiring module caused by the long and narrow cavities is avoided, thereby improving the production efficiency of the wiring module; and, due to the use of multiple detachable discrete In the form of a unit, it is convenient to carry out individual replacement of specified internal components.

Description

Wiring modules for building photovoltaic integrated systems

technical field

The invention relates to building integrated photovoltaic (BIPV) technology, in particular to a wiring module for building integrated photovoltaic system.

Background technique

Solar energy is a renewable energy source. Converting solar energy into electrical energy can not only save energy, alleviate the problem of power supply shortage, but also reduce environmental pollution, so such technology has attracted public attention. A common way of utilizing solar energy is to install solar cell modules (photovoltaic modules) on existing roofs through brackets, and matching wiring modules are usually arranged on the back of the solar cell modules.

In recent years, a new solar energy utilization technology-building integrated photovoltaic (BIPV) technology has emerged, which integrates solar power generation (photovoltaic) products into a part of the building, such as daylighting roofs, windows or glass curtain walls. While generating electricity, it can also play the role of shelter from wind and rain and lighting.

In the above-mentioned building integrated photovoltaic (BIPV) technology, the terminal (solder strip or bus bar) extending from the photoelectric conversion element of the solar cell module is generally electrically connected to the conductive element in the terminal module by welding, and then, Sealed by glue filling.

In the above wiring module, since the conductive elements in the wiring module are electrically connected to the terminal (welding strip) input from the solar cell module by welding, the connection method is more complicated, so the connection operation is more time-consuming, so that the qualified rate and reliability of the product Resilience is reduced, and the production cost is relatively high. In addition, since the welding method forms a permanent connection, it is not easy to separate the solar cell module from the junction module. In addition, in the above wiring module, a long and narrow cavity is generally used, and in order to facilitate the replacement or disassembly of internal components, the cavity is generally closed with a long and narrow cover. Because the cavity and the cover are narrow and long, it is difficult to process the wiring module, so that the production efficiency is low. Also, the use of an elongated cover to seal the entire chamber precludes individual replacement of designated internal components.

Contents of the invention

The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and deficiencies in the prior art.

Correspondingly, one of the objectives of the present invention is to provide a wiring module of a building photovoltaic integrated system that is easy to install and disassemble.

Another object of the present invention is to provide a wiring module of a building photovoltaic integrated system that can improve production efficiency and product reliability.

Another object of the present invention is to provide a wiring module of a building photovoltaic integrated system that can conveniently replace specified internal components.

According to one aspect of the present invention, it provides a junction module of a building photovoltaic integrated system, including: a housing with at least one of the lead terminals disposed on its surface for insertion into the positive and negative poles of the solar panel an opening; accommodate the first and second conductors in the housing, and the first and second conductors are electrically connected to the lead terminals respectively through the first elastic clip; and a bypass diode, which is connected to the between the first and second electrical conductors, wherein the casing includes a plurality of cavities, and at least one element of the first, second electrical conductors and bypass diodes is separately arranged in the different in the cavity.

In one embodiment, each of the plurality of cavities has an opening, and the wiring module further includes a plurality of covers, and each of the plurality of covers closes the corresponding opening in a detachable manner.

Preferably, the junction module further includes: an annular sealing ring disposed between the cover and the opening to form a seal therebetween.

Specifically, at least one end of the housing is a closed end or an open end having a lead-out hole for connecting with an external cable directly or through a connector.

In one embodiment, at the open end, the external cable is detachably electrically connected to at least one of the first and second electrical conductors.

Further, the wiring module further includes: a second elastic clip, which is used to clamp the core wire of the external cable and at least one of the first and second conductors together, and the first and second At least one of the two conductors is disposed in one of the plurality of cavities together with the second elastic clip.

In a specific embodiment, the first and second electrical conductors include first and second conductive rails and connecting conductors, and the connecting conductors include two opposite substantially planar sides; and the first elastic The cross-section of the clip is generally triangular with an open top, including a bottom wall and two opposite side walls extending from both sides of the bottom wall along an acute angle with the bottom wall, wherein when the first elastic clip clamps When the lead terminal is used, the two opposite side walls of the first elastic clip are combined with the lead terminal and apply a biasing force to the lead terminal, so that the lead terminal forms a stable electrical connection with the connecting conductor.

Preferably, the first and second connecting conductors respectively extend from the first and second conductive rails and are integrally formed with the first and second conductive rails.

Preferably, the first and second conductive rails are further provided with elastic locking pieces, and the two pins of the bypass diode are respectively electrically connected to the first and second conductive rails through the elastic locking pieces.

Specifically, the above detachable manner includes at least one of the following manners: buckle connection, bolt connection, screw connection, stud connection and hinge connection.

In a specific implementation manner, the housing includes two cavities, one of the first and second conductors and the bypass diode are arranged in one cavity, and the first and second conductors The other one is set in another cavity.

In another specific implementation manner, the housing includes three cavities, and the first and second conductors and bypass diodes are respectively arranged in the three cavities.

Through the above technical solution, compared with the prior art, the present invention adopts the elastic clip instead of the welding method, thereby avoiding the problems of time-consuming welding operation and relatively high production cost in the prior art. The process cost of the building photovoltaic integrated system is reduced; in addition, due to the design of two or more cavities and covers in the present invention, two or more independent openings are formed on the housing of a wiring module The cover is a replacement unit for internal components. On the one hand, it avoids the processing difficulty of the wiring module caused by the long and narrow cavity and the cover, thereby improving the production efficiency of the wiring module. In addition, due to the use of multiple detachable discrete units, it is convenient to replace the designated internal components individually; in addition, by adopting the elastic clip method, the permanent connection between the solar cell module and the wiring module is avoided, Therefore, it is further convenient to disassemble the solar battery module and the junction module, and facilitate the maintenance and inspection of internal components of the junction module, such as diodes, elastic clips, and connection terminals.

Description of drawings

Fig. 1 is a three-dimensional appearance view of a two-cavity wiring module of a building photovoltaic integrated system according to a specific embodiment of the present invention, wherein the cover is in a closed state;

Fig. 2 is an exploded perspective view showing the two-cavity junction module in Fig. 1, wherein the cover is opened and shows the position and structural relationship of internal components;

Fig. 3 is a perspective view of a three-cavity wiring module of a building photovoltaic integrated system according to another specific embodiment of the present invention, wherein the cover is in a closed state;

FIG. 4 is an exploded perspective view showing the three-cavity junction module of FIG. 1 with the cover opened and showing the location and structural relationship of internal components; and

Fig. 5 is a schematic diagram showing that the connecting terminal is electrically connected to the conductor through the elastic clip in the foregoing specific embodiment.

Detailed ways

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

【The first embodiment】

Referring to Figures 1-2 and 5, it shows a wiring module 100 for a building photovoltaic integrated system in a specific embodiment of the present invention, including: a housing 1 with a surface provided on it, as shown in Figure 1- 2, on the front lower surface 1a, at least one opening 5 for inserting the lead terminal 4 electrically connected to the positive pole and the negative pole (not shown in the figure) of the solar cell panel; Conductors, the first and second conductors are conductively connected to the lead terminals 4 respectively through elastic clips 8; and bypass diodes 9, which are connected between the first and second conductors, wherein the housing 1 includes two cavities 11 , 12 , at least one element among the first and second conductors and the bypass diode 9 is disposed in the two cavities 11 , 12 separately from other elements. In the above junction module, the housing 1 may be made of insulating material. Both the lead terminal 4 and the first and second conductors are made of conductive materials, such as copper, aluminum and other materials. Referring to FIG. 2 , in one embodiment, the first and second conductors include first and second conductor tracks 6 and 7 and connection conductors 19 and 20 connected to the first and second conductor tracks 6 and 7 .

Referring to Figures 1 and 2, at least one end of the housing 1 is a closed end 14 or has an outlet hole 13a for connecting to an external cable (not shown) directly or through a connector (not shown). open end 13. Specifically, as shown in Figures 1 and 2, the housing 1 is generally in the shape of a hollow cylinder, and the left end of the housing 1 of the hollow cylinder can be formed to have a connection with an external cable (not shown) directly or through a connector. The open end 13 of the connected lead-out hole 13a, and the right end thereof is formed as a closed end. However, the present invention is not limited thereto. For example, according to different specific applications, both ends of the housing 1 can be formed as closed ends (not shown in the figure) or as open ends (see FIGS. 3 and 4 ). .

Further, at the open end 13 or 14, the external cable is detachably connected to the first and second conductors, for example at least one of the first and second conductor rails 6 and 7 of the first and second conductors Make an electrical connection. Referring to FIG. 2 and FIG. 4 , in one embodiment, a strong elastic clip 50 is provided at the open end 13 . As shown in FIG. 2 and FIG. 4 , the strong elastic clip 50 is generally α-shaped, and it is formed by thin sheets, such as spring steel sheets. In one embodiment, the α-shaped elastic clip 50 includes a clamping plate 51 having a clamping opening 53 and an extension plate 52 integrally extending from the clamping plate 51 and entering into the clamping opening 53 . Due to the elastic recovery effect of the extension plate 52 itself, it has a clamping effect on the wire clamped into the clamping opening 53 , such as the core wire of an external connection cable (not shown in the figure). In the embodiment shown in FIG. 2 and FIG. 4 , a protruding portion 63 , 73 extends from the free ends of the first and second conductive rails 6 , 7 , respectively. When connecting the external cables to the conductor rails 6, 7, make the cable cores contact the protruding parts 63, 73 of the first and second conductor rails 6, 7, and insert both of the contacts into the elastic clip 50 In the clamping opening 53, under the action of the elastic recovery of the extending plate 52 itself, the extending plate 52 exerts a clamping action on the cable core wire and the protruding parts 63, 73 clamped in the clamping opening 53, thereby forming a reliable conductive connection, used to transmit current. By adopting the above-mentioned non-welding method, the convenient installation and replacement of the cable core wire can be realized. It should be noted that the shape and structure of the elastic clip 50 are not limited to the above-mentioned α type, but can have any suitable deformation form, as long as the connection terminal of the conductive rail of the strong elastic clip 50 and the external cable can be realized, such as the clamping effect of the core wire. For example, the elastic clip 8 in FIG. 5 . Further, although in the above-mentioned embodiment, the conductive rail and the cable are connected by a strong elastic clip, the present invention is not limited to the clamping connection of the strong elastic clip, and other detachable connections such as screw connections, or welding, riveting, etc., can also be used. Disassembly method. Regardless of the cable connection method, the connection between at least one of the first and second conductors and the second elastic clip 50 can be set in one of the multiple cavities, or the connection between the above-mentioned connection and a lead terminal 4 are set together in a cavity (see Figure 2 and Figure 4), which is convenient for subsequent inspection or replacement by opening the box cover.

Further, each external cable can be connected in series with the adjacent battery module through a connector or another connecting cable, so as to expand the output power, and the positive and negative connecting cables of the two outermost modules form an output voltage for Realize the electric energy output of the whole solar cell group. The bypass diode 9 is connected in the opposite direction to the output voltage of the battery in order to shunt the reverse biased current of the battery.

Referring to FIG. 2 , the cavities 11 , 12 have openings 15 , 16 respectively, and the wiring module 100 further includes two covers 2 , 3 , which respectively close the corresponding openings 15 , 16 in a detachable manner. Referring to FIG. 2, in a specific embodiment, the housing 1 includes two cavities 11, 12, one of the first and second conductive rails 6, 7, for example, the conductive rail 7 and the bypass diode 9 are set In one cavity 12 , the other 6 of the first and second conductor rails 6 , 7 is arranged in the other cavity 11 .

In a preferred implementation example, the wiring module 100 further includes: annular sealing rings 17, 18, which are arranged between the covers 2, 3 and the openings 15, 16 to form a seal therebetween. By providing ring sealing rings 17, 18 between the covers 2, 3 and the openings 15, 16 for sealing, external temperature and humidity can be prevented from affecting the operation and performance of the internal components of the junction module.

Specifically, referring to FIG. 2, the outer peripheral parts of the covers 2 and 3 are respectively provided with a plurality of clamping legs 23, 33, and correspondingly, a plurality of clamping legs 23, 33 are respectively provided on the housing 1. Cooperating card slots 24,34. Under the action of external force applied by the operator to the covers 2, 3, the locking legs 23, 33 are properly deformed so that they can be combined with the slots 24, 34 of the housing 1, thereby connecting the covers 2, 3 and the housing 1 tightly clamped together to close the openings 15, 16 of the cavities 11, 12 provided on the housing 1. Although FIG. 2 shows a specific embodiment of the snap-fitting manner of the above-mentioned covers 2 , 3 and the housing 1 , those skilled in the art should understand that the specific structure is not limited thereto.

Another alternative connection structure is shown in FIG. 5 . Referring to FIG. 5 , the covers 2 , 3 are generally in the shape of an inverted U, which includes a bottom 70 and two side wall portions 72 extending generally parallel. Referring to FIG. 5 , the lower portion of the side wall portion 72 is further provided with a protrusion 75 , and a groove portion 74 is formed outside the side wall portion 72 . Preferably, the seal 17 is provided between the housing 1 and the groove portion 74 of the side wall portion 72 of the cover 2 , 3 to form a seal between the cover 2 , 3 and the housing 1 . Still further preferably, a groove portion (not shown) corresponding to the groove portion 74 of the side wall portion 72 of the cover 2, 3 can be further provided on the housing 1, so as to further stably and airtightly A seal 17 is arranged between the cover 2 , 3 and the housing 1 .

Although, in the above-mentioned embodiment, the sealing member 17 is arranged between the housing 2 and the side wall portion 72 of the cover 2,3, the present invention is not limited thereto, and the sealing member 17 may be arranged between the cover 2,3 and the opening. 15, 16 in any suitable position to form a seal between the covers 2, 3 and the housing 1.

Although, in the above-mentioned embodiment, it has shown snap-in and above-mentioned alternative embodiment, but the invention is not limited thereto, and cover 2, 3 also can be connected by various other alternative ways, for example bolt connection, screw connection, stud connection and hinged connection to the housing 1 to seal the openings 15,16.

Referring to FIG. 2 again, in a preferred embodiment, referring to FIG. 2 , the first and second connecting conductors 19 and 20 extend from the first and second conductive rails 6 and 7 respectively and conduct electricity with the first and second conductor rails. The rails 6 and 7 are integrally formed. Apparently, the connecting conductors 19 , 20 can also be formed independently from the first and second conductive rails 6 , 7 and then be electrically connected to the first and second conductive rails 6 , 7 . Referring to Fig. 5, the connecting conductor 19, 20 includes two opposite substantially planar sides 201, 202; Two opposing side walls 82 , 83 extending at an acute angle to the bottom wall 81 . The material of the elastic clip 8 is made of a material with certain elasticity, which can be a metal material, such as spring steel, or a non-metal material, such as polyurethane plastic. Since the two opposite side walls 82, 83 extend along the two ends of the bottom wall 81 and form an acute angle with the bottom wall 81, under the action of elasticity, the two opposite side walls 82, 83 of the elastic clip 8 can be opposed to each other between them. Components, such as the connecting conductors 19, 20 and the lead terminals 4, apply the clamping force.

Referring to FIG. 5 , the lead terminal 4 is disposed between the elastic clip 8 and the connection conductors 19 , 20 . In a specific embodiment, the lead terminal 4 is a flexible terminal, which at least partially surrounds the connecting conductors 19 , 20 . Thus, when the elastic clip 8 clamps the lead terminal 4, the two opposite side walls 82, 83 of the elastic clip 8 combine with the lead terminal 4 and apply a biasing force to the lead terminal 4, so that the lead terminal 4 is connected to the lead terminal 4. The conductors 19, 20 form a stable electrical connection.

Although the embodiment of the combination of the elastic clip 8, the connecting conductors 19, 20 and the lead terminal 4 has been described above in conjunction with accompanying drawing 5, the present invention is not limited thereto, the above-mentioned elastic clip 8, the connecting conductor 19, The various exemplary embodiments of the combination of 20 and lead terminal 4 are not limiting, but various changes and modifications are possible, so that the elastic clip 8 is combined with the lead terminal 4 and applies a bias to the lead terminal 4 Force, so as to realize the stable electrical connection between the lead terminal 4 and the connection conductors 19 and 20 . The specific structures of the constituent components shown in the drawings of the present invention are only exemplary and not limiting. For example, for the elastic clip 8, as long as its cross-sectional shape can be combined with the lead terminal 4 as before, and a biasing force is applied to the lead terminal 4, so that the lead terminal 4 forms a stable electrical connection with the connecting conductors 19, 20, There are no restrictions regarding the structure of its longitudinal direction (see FIG. 4 ).

Compared with the prior art, the present invention adopts the elastic clip instead of the welding method, thereby avoiding the problems of time-consuming welding operation and relatively high production cost in the prior art, and at the same time, the requirements for the operation process are not high, thus reducing the cost of building photovoltaic integration. The process cost of the system; in addition, the permanent connection between the solar cell module and the wiring module is avoided, thereby further facilitating the disassembly of the solar cell module and the wiring module, and facilitating the internal components of the wiring module, such as diodes, elastic clips, and connection terminals maintenance and inspection.

Referring to FIG. 2, in a preferred embodiment, a plurality of elastic locking pieces 61, 71 are further provided on the first and second conductive rails 6, 7, for example, three elastic locking pieces 61, 71 in FIG. The two pins 91, 92 of the diode 9 form conductive connections with the first and second conductive rails 6, 7 through the elastic locking pieces 61, 71 respectively. By setting the above-mentioned elastic locking pieces 61, 71, the bypass diode 9 can be easily installed on the first and second conductive rails 6, 7, and easily disassembled from the first and second conductive rails 6, 7 . However, the above-mentioned elastic locking pieces 61, 71 are not necessary, and the bypass diode 9 can also be connected to the first and second conductive rails 6, 7 through other methods such as plug-in. In the modified embodiment in which a plurality of elastic locking pieces 61, 71 are further arranged on the above-mentioned first and second conductive rails 6, 7, the connecting conductor 20, the locking piece 61 of the conductive rail 6, the locking piece 71 of the conductive rail 7, The bypass diode 9 and the elastic clip 8 are accommodated in the cavity 12 , while the connecting conductor 19 , other parts of the conductive rail 6 , and the elastic clip 8 are accommodated in the cavity 11 . Although in the above embodiment, the elastic locking piece 61 of the first conductive rail 6 is accommodated in the cavity 12, the present invention is not limited thereto, for example, the elastic locking piece 61 of the first conductive rail 6 can also be accommodated in the cavity. 11 in.

【Second Embodiment】

Fig. 3 is a perspective view of the three-chamber junction module of the building photovoltaic integrated system according to another specific embodiment of the present invention, wherein the cover is in a closed state; Fig. 4 shows the decomposition of the three-chamber junction module in Fig. 1 A perspective view with the cover opened and showing the position and structural relationship of the internal components. The wiring module of the building photovoltaic integrated system according to the second embodiment of the present invention is basically the same as the wiring module in the first embodiment, except for the number of cavities and covers therein and the arrangement of internal components respectively disposed in the cavities. In the following, only the differences between the second embodiment and the first embodiment will be described, and other points that are the same or similar to the first embodiment will not be repeated.

Referring to Fig. 3 and Fig. 4, the three-chamber terminal module 300 includes: a housing 1, which has a positive electrode and a negative electrode (not shown in the figure) arranged on its surface, such as the front lower surface 1a in Fig. Shown) at least one opening 5 of the lead terminal 4 for electrical connection (refer to FIG. 5); the first and second conductor rails 6, 7 as part of the first and second conductors contained in the housing 1, The first and second conductors are respectively conductively connected to the lead terminal 4 through the elastic clip 8; and the bypass diode 9 is connected between the first and the second conductors, wherein the housing 1 includes two cavities 311, 312 , 313, different from the first embodiment, at least one element of the first and second conductors, for example, the first and second conductor rails 6, 7 and the bypass diode 9 are separately arranged in three different cavities 311 , 312, 313.

3 and 4, the cavities 311, 312 and 313 have openings 315, 316 and 317 respectively, and the wiring module 100 also includes three covers 302, 303 and 304 corresponding to the three openings, which are respectively detachably closed corresponding openings 315 , 316 and 317 . Referring to Fig. 4, in a specific embodiment, preferably, in a preferred embodiment, a plurality of elastic locking pieces 61, 71 are further provided on the first and second conductive rails 6, 7, such as in Fig. 4 The three elastic locking pieces 61 , 71 , and the two pins 91 , 92 of the bypass diode 9 respectively form conductive connections with the first and second conductive rails 6 , 7 through the elastic locking pieces 61 , 71 . At this time, optionally, the first conductive rail 6, the connecting terminal 4 electrically connected to the first conductive rail 6 and the elastic clip 8 for clamping the first conductive rail 6 and the connecting terminal 4 are accommodated in the cavity 311; The elastic locking piece 61 connected to a conductive rail 6, the elastic locking piece 71 connected to the second conductive rail 7, and the bypass diode are accommodated in the cavity 312; the second conductive rail 7 is electrically connected to the connecting terminal of the second conductive rail 7 4 and the elastic clip 8 for clamping the second conductive rail 7 and the connecting terminal 4 are accommodated in the cavity 313 . Although in the above-mentioned embodiment, the elastic locking piece 61 of the first conductive rail 6 and the elastic locking piece 71 of the second conductive rail 7 are both accommodated in the cavity 312, the present invention is not limited thereto, for example, the first conductive rail The elastic locking piece 61 of the rail 6 and the elastic locking piece 71 of the second conductive rail 7 can also be accommodated in the cavity 311 and the cavity 313 respectively.

By adopting the structure of the above three cavities 311 , 312 and 313 , the possibility and convenience of opening the cover to replace internal components such as diodes, elastic clips and connection terminals are further enhanced.

Although the present invention has described the general concept of the present invention through the specific embodiments of the two-chamber and three-chamber wiring modules, the present invention is not limited thereto, and those of ordinary skill in the art can realize on the basis of the above disclosed embodiments A structure with more than three cavities can be adopted to further improve the convenience of maintenance and replacement of the components contained in each cavity.

As can be seen from the above contents of the present invention, due to the design of two or more cavities and covers in the present invention, two or more covers that can be opened independently are formed on the housing of a wiring module to A unit in which internal components are replaced. On the one hand, it avoids the processing difficulty of the wiring module caused by the long and narrow cavity and the cover, thereby improving the production efficiency of the wiring module. In addition, due to the use of multiple detachable discrete units, specific internal components can be easily replaced individually.

Although the present invention has been described with reference to the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation of the present invention. The terms indicating orientation in the description, such as "upper", "lower", "upper surface", and "lower surface", are for the convenience of expression, and are above and below in each drawing, but the above-mentioned orientation can indicate any orientation, such as "lower surface" ”, “Up”, “Left” and “Right”, etc.

While certain embodiments of the present general inventive concept have been shown and described, it will be understood by those of ordinary skill in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

Claims (12)

1. A wiring module of a building photovoltaic integrated system, comprising: a housing having at least one opening provided on its surface for insertion of a lead terminal electrically connected to the positive and negative electrodes of the solar cell panel; First and second electrical conductors contained in the housing, the first and second electrical conductors are respectively conductively connected to the lead terminals through the first elastic clip; and a bypass diode connected between the first and second conductors, Wherein the housing includes a plurality of cavities, and at least one element among the first and second electrical conductors and the bypass diode is disposed separately from other components in the different cavities. 2. The junction module according to claim 1, characterized in that: each of the plurality of cavities has an opening, The junction module further includes a plurality of covers, each of which closes a corresponding opening in a detachable manner. 3. The junction module according to claim 2, further comprising: An annular seal is disposed between the cover and the opening to form a seal therebetween. 4. The junction module according to claim 1, characterized in that: At least one end of the housing is a closed end or an open end with a lead-out hole for connecting with an external cable directly or through a connector. 5. The junction module according to claim 4, characterized in that: At the open end, the external cable is detachably electrically connected to at least one of the first and second electrical conductors. 6. The junction module according to claim 5, further comprising: a second elastic clip, which is used to clamp the core wire of the external cable and at least one of the first and second electrical conductors together, At least one of the first and second conductors is disposed in one of the cavities together with the second elastic clip. 7. The junction module according to claim 1, characterized in that: said first and second electrical conductors include first and second electrical conductor tracks and a connecting conductor including two opposing generally planar sides; and The cross-section of the first elastic clip is generally triangular with an open top, including a bottom wall and two opposite side walls extending from both sides of the bottom wall along an acute angle with the bottom wall, Wherein when the first elastic clip clamps the lead terminal, the two opposite side walls of the first elastic clip are combined with the lead terminal and apply a biasing force to the lead terminal, so that the lead terminal is in contact with the lead terminal. The connecting conductors form a stable electrical connection. 8. The junction module according to claim 7, characterized in that: The first and second connecting conductors respectively extend from the first and second conductive rails and are integrally formed with the first and second conductive rails. 9. The junction module according to claim 8, characterized in that: The first and second conductive rails are also provided with elastic locking pieces, and the two pins of the bypass diode are electrically connected to the first and second conductive rails respectively through the elastic locking pieces. 10. The junction module according to claim 2, characterized in that: The detachable manner includes at least one of the following manners: buckle connection, bolt connection, screw connection, stud connection and hinge connection. 11. The junction module according to claim 1, characterized in that: The housing includes two cavities, one of the first and second electrical conductors and the bypass diode are arranged in one cavity, and the other of the first and second electrical conductors is arranged in the other cavity. 12. The junction module according to claim 1, characterized in that: The housing includes three cavities, and the first and second conductors and bypass diodes are respectively arranged in the three cavities.

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