Circuit board for power inverter
Technical Field
The utility model relates to the field of circuit boards, in particular to a circuit board for a power inverter.
Background
The power inverter can convert DC12V direct current into AC220V alternating current which is the same as commercial power and is used for common electric appliances, and is a convenient power inverter, and a circuit board is needed inside the power inverter when the power inverter works, so that the circuit board for the power inverter is needed.
Through searching, the prior patent (publication number: CN 205755220U) discloses a photovoltaic inverter circuit board heat dissipation structure, which comprises a box shell and a PCB circuit board, wherein the PCB circuit board is provided with electric elements, and when the box shell is placed in a use state, the electric elements on the PCB circuit board are arranged from top to bottom according to the order of the heating value from large to small. According to the photovoltaic inverter circuit board heat dissipation structure, electric elements are arranged from top to bottom according to the sequence of the large heat productivity, and in the working process of the inverter, because hot air rises upwards, heat generated by devices with large heat productivity can not affect other devices, normal working of the electric elements is guaranteed, meanwhile, the inverter is further provided with heat dissipation fins on a bottom plate, heat dissipation can be effectively carried out on the heating elements in the photovoltaic inverter through the heat dissipation fins, and normal working of the whole photovoltaic inverter circuit is guaranteed;
the inventors found that the following problems exist in the prior art in the process of implementing the present utility model: when the traditional circuit board works on the power inverter, a plurality of heat dissipation holes are formed in the power inverter, when the power inverter is used for a long time, the load of the internal circuit board is large, so that the temperature of the circuit board is high, the heat dissipation efficiency of the heat dissipation holes is limited, heat in the circuit board is not timely dissipated, and the circuit board is damaged due to the high temperature;
accordingly, a circuit board for a power inverter is proposed in view of the above-described problems.
Disclosure of Invention
(one) solving the technical problems
In view of the shortcomings of the prior art, the utility model aims to provide a circuit board for a power inverter, which has the advantage of being capable of removing heat from the circuit board of the power inverter.
(II) technical scheme
The technical scheme is that the circuit board for the power inverter comprises a protection shell and a heat removing mechanism, wherein the heat removing mechanism is arranged on one side of the protection shell and comprises a hinge, a protection plate, a limiting clamping block, a limiting clamping groove, a dust cover, a miniature motor, a rotating shaft and a fan.
One side fixedly connected with hinge of protecting crust, the opposite side fixedly connected with guard plate of hinge, the spacing fixture block of inner wall fixedly connected with of guard plate, spacing draw-in groove has been seted up to the inner wall of protecting crust, the inboard fixedly connected with dust cover of guard plate, the inboard fixedly connected with micro motor of dust cover, the output shaft of micro motor passes through shaft coupling fixedly connected with pivot, the other end fixedly connected with fan of pivot.
Preferably, the protection plate forms a movable structure between the hinge and the protection shell, and the hinge is distributed at equal intervals on one side of the protection plate.
Preferably, the limiting clamping blocks and the limiting clamping grooves are connected in a clamping mode, and the limiting clamping blocks and the protection plates are vertically distributed.
Preferably, the fan forms a rotating structure through the rotating shaft and the micro motor, and the rotating shaft and the protection plate are of a penetrating structure.
Preferably, the inside of the protecting shell is movably connected with an inverter circuit board, both sides of the inverter circuit board are fixedly connected with fixing plates, and fixing holes are formed in the inside of the fixing plates.
Preferably, the two sides of the interior of the protective shell are provided with vent holes, and the vent holes are distributed at equal intervals on the two sides of the interior of the protective shell.
Preferably, a dustproof filter screen is fixedly connected to the inner side of the vent hole, and the diameter size of the dustproof filter screen is matched with that of the vent hole.
(III) beneficial effects
Compared with the prior art, the utility model provides the circuit board for the power inverter, which has the following beneficial effects.
According to the utility model, through the arrangement of the heat removing mechanism, when the circuit board works on the inverter, the protection plate firstly covers the inside of the protection shell through the hinge so as to seal and protect the inverter circuit board in the protection shell, and when the protection plate is closed, the limit clamping blocks in the protection plate can be opened to the inner side of the limit clamping grooves in the protection shell so as to fix and prevent the protection plate from opening, when the working heat of the inverter circuit board in the protection shell is large, the miniature motor in the dust cover is started to drive the fan through the rotating shaft so as to discharge the heat emitted by the inverter circuit board in the protection shell through the vent hole, so that effective guarantee is provided for heat dissipation of the inverter circuit board.
Drawings
FIG. 1 is a schematic diagram of the front view of the present utility model;
FIG. 2 is a schematic view of a heat removing mechanism according to the present utility model;
FIG. 3 is a schematic view of a vent and dust screen structure according to the present utility model;
FIG. 4 is a schematic view of the structure of the fixing plate and the fixing hole according to the present utility model.
In the figure: 1. a protective shell; 2. a heat removal mechanism; 201. a hinge; 202. a protection plate; 203. a limit clamping block; 204. a limit clamping groove; 205. a dust cover; 206. a micro motor; 207. a rotating shaft; 208. a fan; 3. an inverter circuit board; 4. a fixing plate; 5. a fixing hole; 6. a vent hole; 7. and a dustproof filter screen.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, 2, 3 and 4, the present utility model: the utility model provides a circuit board for power inverter, including protecting crust 1 and remove heat mechanism 2, one side of protecting crust 1 is provided with removes heat mechanism 2, the inboard swing joint of protecting crust 1 has inverter circuit board 3, the equal fixedly connected with fixed plate 4 in both sides of inverter circuit board 3, fixed orifices 5 have been seted up to the inboard of fixed plate 4, ventilation hole 6 has all been seted up to the inside both sides of protecting crust 1, ventilation hole 6 is equidistant distribution in the inside both sides of protecting crust 1, the inboard fixedly connected with dustproof filter screen 7 of ventilation hole 6, the diameter size of dustproof filter screen 7 coincides with the diameter size of ventilation hole 6.
Wherein: when the circuit board works on the power inverter, firstly, the inverter circuit board 3 is placed on the inner side of the protective shell 1, then the inverter circuit board 3 is installed and fixed on the inner side of the fixing hole 5 which is penetrated and screwed into the fixing plate 4 through the fixing piece, after the inverter circuit board 3 is installed, the protective shell 1 is placed in the power inverter for installation, after the inverter circuit board 3 is positioned in the protective shell 1, the purpose of ventilation and heat dissipation can be carried out on the inverter circuit board 3 in the protective shell 1 through the heat removal mechanism 2, meanwhile, the ventilation hole 6 can be used for ventilation on the inner side of the protective shell 1, and the dust filter screen 7 on the inner side of the ventilation hole 6 can be used for isolating and filtering dust in the air entering the ventilation hole 6.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a circuit board for a power inverter, the heat removal mechanism 2 includes a hinge 201, a protection plate 202, a limit clamping block 203, a limit clamping groove 204, a dust cover 205, a micro motor 206, a rotating shaft 207, and a fan 208, wherein one side of the protection case 1 is fixedly connected with the hinge 201, the other side of the hinge 201 is fixedly connected with the protection plate 202, the inner wall of the protection plate 202 is fixedly connected with the limit clamping block 203, the limit clamping groove 204 is provided on the inner wall of the protection case 1, the inner side of the protection plate 202 is fixedly connected with the dust cover 205, the inner side of the dust cover 205 is fixedly connected with the micro motor 206, an output shaft of the micro motor 206 is fixedly connected with the rotating shaft 207 through a coupling, the other end of the rotating shaft 207 is fixedly connected with the fan 208, the protection plate 202 forms a movable structure between the hinge 201 and the protection case 1, the hinge 201 is distributed at equal intervals on one side of the protection plate 202, the limit clamping block 203 and the limit clamping groove 204 form a vertical distribution, the fan 208 forms a rotating structure between the rotating shaft 207 and the protection plate 202 through the rotating structure.
Wherein: when the heat removal mechanism 2 dissipates heat of the inverter circuit board 3 inside the protective shell 1, the protective plate 202 is used for covering the inside of the protective shell 1 through the hinge 201 so as to seal and protect the inverter circuit board 3 inside the protective shell 1, when the protective plate 202 is closed, the limit clamping blocks 203 inside the protective plate 202 can be opened to the inner side of the limit clamping grooves 204 inside the protective shell 1 so as to fix the protective plate 202 and prevent the protective plate 202 from being opened, when the working heat of the inverter circuit board 3 inside the protective shell 1 is large, the miniature motor 206 inside the engine dust cover 205 drives the fan 208 through the rotating shaft 207 to discharge the heat emitted by the inverter circuit board 3 inside the protective shell 1 through the vent holes 6, and therefore effective guarantee is provided for heat dissipation of the inverter circuit board 3.
The working principle of the utility model is that; when the circuit board works on the power inverter, firstly, the inverter circuit board 3 is placed on the inner side of the protective shell 1, then the inverter circuit board 3 is installed and fixed on the inner side of the fixing hole 5 screwed into the fixing plate 4 through the fixing piece, after the inverter circuit board 3 is installed, the protective shell 1 is placed on the inner side of the power inverter, after the inverter circuit board 3 is positioned in the protective shell 1, the purpose of ventilating and radiating the inverter circuit board 3 in the protective shell 1 through the heat removing mechanism 2 can be achieved, when the heat removing mechanism 2 radiates the heat to the inverter circuit board 3 in the protective shell 1, firstly, the protective plate 202 covers the inner side of the protective shell 1 through the hinge 201, when the protective plate 202 is closed, the limit clamping blocks 203 in the protective plate 202 can be opened on the inner side of the limit clamping grooves 204 in the inner side of the protective shell 1, when the working heat of the inverter circuit board 3 in the protective shell 1 is large, the micro motor 206 in the protective shell 1 is driven through the rotating shaft 207, the fan 208 is driven to discharge the heat emitted by the inverter circuit board 3 in the protective shell 1 through the inner side 6, and the filter screen 7 is the filter screen of the filter screen 206, and the filter screen 37 is the filter screen of the filter screen 37 and the filter circuit is the filter screen 37.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.