A kind of photovoltaic junction boxTechnical field
The present invention relates to a kind of photovoltaic junction box.
Background technology
Inexhaustible solar energy is just favored by increasing people.Solar energy power generating is more listed in new energy development utilization plan by many countries, and application quantity enlarges year by year.The photovoltaic junction box that generally uses at present all is that the direct integral body in the box body back side is fixed on the photovoltaic component back plate; usually also need the sealing sealing during installation; because the above-mentioned photovoltaic junction box back side and backboard sealing fixed; so can only be by positive heat radiation; its relative radiating effect is poor; when temperature raise, the resistance to overturning of terminal box reduced, thereby causes photovoltaic module power to be obstructed.
Summary of the invention
The object of the present invention is to provide a kind of photovoltaic junction box that improves heat dispersion.
For realizing aforementioned purpose, the present invention adopts following technical scheme: a kind of photovoltaic junction box, comprise box body, the lid that cooperates with box body, be arranged at the some copper coins in the box body and the diode that is electrically connected adjacent copper coin, described box body comprises settling the installation portion of copper coin, extend upward the sidepiece of formation from the installation portion edge, and from the downward integrated some air-flow guide wall in installation portion bottom, described installation portion comprises the diode containing cavity that protrudes out to accommodate described diode downwards, form an air-flow gathering sill between the adjacent air-flow guide wall, described diode containing cavity is positioned at described air-flow gathering sill.
As a further improvement on the present invention, has the gap between described air-flow guide wall and the diode containing cavity.
As a further improvement on the present invention, described air-flow guide wall is extended straight down and is row and is arranged in described installation portion bottom.
As a further improvement on the present invention, described diode comprises body and several pins of drawing from body one side, and the bottom surface that described body has fits in a copper coin, and described pin fits in adjacent copper coin.
As a further improvement on the present invention, be provided with to prevent the posting of diode skew on the described copper coin.
As a further improvement on the present invention, described box body comprises that also described reinforcement is positioned at described air-flow gathering sill from the downward integrated reinforcement in installation portion bottom.
As a further improvement on the present invention, described box body also comprises the base that extends to form from the installation portion edge downwards, and encloses the movable chamber that forms by described base and installation portion, described air-flow gathering sill is positioned at described movable chamber, and described base comprises between several interval parts, the adjacent spaces section and is provided with the ventilating groove that is communicated with movable chamber.
As a further improvement on the present invention, convex is provided with the fixture block that is connected in order to box cover buckling at least two described interval parts.
The present invention by arrange on the box body protrude out downwards in order to accommodate the diode containing cavity of diode, in the box body bottom air-flow guide wall is set, and above-mentioned diode containing cavity is arranged in the air-flow gathering sill that is separated into by the air-flow guide wall, realize the box body backside heat and enlarged area of dissipation, thereby realize good heat dispersion.
Description of drawings
Fig. 1 is box body, copper coin and convergent belt three's assembly drawing in the photovoltaic junction box in the specific embodiment of the invention.
Fig. 2 is the explosive view of Fig. 1.
Fig. 3 is the structural representation of box body among Fig. 1.
Embodiment
See also Fig. 1 ~ 3, a kind of photovoltaic junction box, the lid (not shown) that comprisebox body 2, cooperates withbox body 2, diode 4 and fourconvergent belts 3 of being arranged at copper coin 5 in thebox body 2, being electrically connected with copper coin 5, these fourconvergent belts 3 lay respectively at the below ofbox body 2, and respectively withcopper coin 2 on the 51 man-to-man electric connections of four metal links.
Described copper coin 5 comprises that four are positioned at same plane (being installed on respectively installation portion 22) and not contacted small-sized copper coin, be respectively the first small-sized copper coin 51 ', the second small-sized copper coin 52 ', the 3rd small-sized copper coin 53 ' and the 4th small-sized copper coin 54 ', owing to not contacting between above-mentioned four small-sized copper coins, therefore have certain spacing between two adjacent small-sized copper coins, namely have conduit 1.Be electrically connected with diode between every two adjacent small-sized copper coins, in the present embodiment, be provided with altogether three diodes, be respectively: thefirst diode 41 that connects the first small-sized copper coin 51 ' and the second small-sized copper coin 52 ', thesecond diode 42 that connects the second small-sized copper coin 52 ' and the 3rd small-sized copper coin 53 ' connects the3rd diode 43 of the 3rd small-sized copper coin 53 ' and the 4th small-sizedcopper coin 54 '.Described each diode 4 comprisesbody 44 and twopins 45, thisbody 44 is shaped as square, comprise thepin face 46 of drawing twopins 45, the bottom surface (indicate) (namely) adjacent with describedpin face 46, its concrete mounting means is: the bottom surface fits in wherein copper coin 5, twopins 45 fit in adjacent copper coin 5, as: the bottom surface of thefirst diode 41 is fitted on the first small-sized copper coin 51 ', and thepin 45 of thefirst diode 41 electrically is installed on the second small-sizedcopper coin 52 '.And in order to prevent the diode skew, on copper coin 5, also be provided with posting 53.
Describedbox body 2 comprises settling theinstallation portion 22 of copper coin 5, extends upward thesidepiece 26 of formation frominstallation portion 22 edges, runs through theopen region 23 ofbox body 2 and downward integrated four air-flow guide wall 28 frominstallation portion 22 bottoms.Fourmetal links 51 on the described copper coin 5 are electrically connected by fourconvergent belts 3 ofopen region 23 with the below of box body 2.Described air-flow guide wall 28 is extended straight down and is the bottom that row are arranged in thisinstallation portion 22, forms an air-flow gatheringsill 281 between the above-mentioned adjacent air-flow guide wall 28.Describedinstallation portion 22 comprises threediode containing cavities 21 that protrude out to accommodate diode 4 downwards, and described each diode 4 bottom surface on being fitted in copper coin 5,pin face 46 and remaining four side all place in the diode containing cavity 21.Above-mentioned threediode containing cavities 21 respectively one by one correspondence be arranged in the air-flow gatheringsill 281.
Owing inbox body 1 bottom air-flow guide wall 28 being set, so this photovoltaic junction box can be realized the effect of backside heat, simultaneously, again becausediode containing cavity 21 protrudes out the bottom, and be positioned at air-flow guide wall 28 formed air-flow gathering sills 281, so that the area thatdiode containing cavity 21 contacts with ventilating air increase, and then make the radiating effect of this photovoltaic junction box more excellent.Has the gap that is beneficial to the air circulate between described air-flow guide wall 28 and thediode containing cavity 21.
Above-mentioned box body also comprises frominstallation portion 22 bottoms downward integratedreinforcement 29, connects the air-vent 24 of installation portion, thebase 27 that extends to form downwards frominstallation portion 22 edges and enclosed themovable chamber 20 that forms bybase 27 and installation portion 22.Can strengthen box body plasticity by describedreinforcement 29, thisreinforcement 29 is positioned at one of them air-flow gathering sill 281, and these air-flow gatheringsill 281 interior separations are become two parts.Described air-flow gathering sill 281 is positioned at thisactivity chamber 20,base 27 comprises and is provided with theventilating groove 272 that is communicated withmovable chamber 20 betweenseveral interval parts 271, theadjacent spaces section 271, the circulation ofmovable chamber 20 and outer gas stream when realizing that by thisventilating groove 272 photovoltaic junction box uses, gas even bring about the desired sensation in thestream gathering sill 281 and the gas of photovoltaic junction box outside exchange, thereby are beneficial to the photovoltaic junction box bottom heat radiation.For the ease of the cooperation betweenbox body 2 and the lid, convex is provided with thefixture block 273 in order to be connected with box cover buckling on the described interval parts that is oppositely arranged 271.
Although be the example purpose, preferred implementation of the present invention is disclosed, but those of ordinary skill in the art will recognize, in the situation that do not break away from by the disclosed scope and spirit of the present invention of appending claims, various improvement, increase and replacement are possible.