Energy storage device for photovoltaic power grid
Technical Field
The utility model relates to the technical field of photovoltaic power grids, in particular to an energy storage device for a photovoltaic power grid.
Background
Photovoltaic power generation is significant to human beings for the application of power grids, light energy is a clean renewable energy source, and photovoltaic power generation is a technology for directly converting light energy into electric energy by utilizing the photovoltaic effect of a semiconductor interface.
The energy storage device is a battery, when photovoltaic power generation and energy charging are carried out, the battery body generates certain heat, the temperature of the battery body can be increased, most of the batteries are installed on the ground in the existing photovoltaic power grid power supply system, and the batteries radiate and radiate by air contact, but the radiation efficiency of natural air is not high due to the fact that the illumination intensity of the photovoltaic charging process is high, the working efficiency and the service life of the batteries are directly affected, and therefore in order to further improve the radiation efficiency, the structure of the energy storage device is required to be optimally designed, and a better radiation effect is achieved.
Disclosure of utility model
The utility model aims to provide an energy storage device for a photovoltaic power grid, which does not need electric drive, automatically dissipates heat through the geographic advantages of a photovoltaic power plant, is more energy-saving and environment-friendly, has higher heat dissipation efficiency, can realize spontaneous efficient heat dissipation as a whole of the energy storage device for the photovoltaic power grid, and ensures the normal operation and the service life of an internal storage battery assembly.
The technical aim of the utility model is realized by the following technical scheme: an energy storage device for a photovoltaic power grid comprises a buried protective box, a heat dissipation mechanism and a plurality of groups of storage batteries,
The buried protective box comprises a bottom box body and a top box cover which are connected in a matched mode, the top box cover comprises a middle cover plate and two edge cover plates which are correspondingly connected, and ventilation ports are formed in the edge cover plates in a penetrating mode;
The heat dissipation mechanism comprises a heat dissipation bracket, a plurality of wind driven fans and a plurality of internal heat dissipation fans, the heat dissipation bracket comprises a plurality of supporting legs and a heat dissipation screen, two ends of the supporting legs are respectively connected with the bottom surface corners of the heat dissipation screen and the top surface of the box bottom plate of the bottom box body, and all the storage batteries are uniformly arranged on the top of the heat dissipation screen at intervals;
The internal heat dissipation fan is arranged between the heat dissipation screen plate and the box bottom plate, the wind driven fan is arranged on the outer side of the middle cover plate, the wind driven fan is connected with the internal heat dissipation fan through a transmission mechanism, and the wind driven fan is a fan rotatable under natural wind.
As a preferable technical scheme of the utility model, the wind driven fan comprises a wind fan shaft, a plurality of wind blades, a wind driven seat and a wind driven connecting rod, wherein the bottom end of the wind driven connecting rod is fixedly connected with the outer side of the top box cover, the top end of the wind driven connecting rod is fixedly connected with the bottom end of the wind driven seat, one end of the wind fan shaft is rotationally connected with the wind driven connecting seat, the wind blades are uniformly connected with the other end of the wind fan shaft, driving threads matched with the transmission mechanism are arranged on the outer side of the wind fan shaft, and when the wind driven fan rotates, a power source is provided for the transmission mechanism through the rotation of the driving threads.
As a preferable technical scheme of the utility model, the internal heat dissipation fan comprises an internal fan shaft and a plurality of internal fan blades which are uniformly connected to the outer side of the internal fan shaft, wherein the two ends of the internal fan shaft are provided with internal connecting seats, the internal connecting seats are fixedly connected with box side plates of the bottom box body, the end parts of the internal fan shaft are rotationally connected with the middle parts of the internal connecting seats, driving threads are also arranged on the outer side of the internal fan shaft, and the internal fan shaft obtains power provided by a transmission mechanism through the driving threads.
As a preferable technical scheme of the utility model, the heat dissipation mechanism further comprises a plurality of side heat dissipation fans, the side heat dissipation fans are arranged at positions below the ventilation openings, each side heat dissipation fan comprises a side fan shaft and a plurality of side fan blades which are uniformly connected to the outer sides of the side fan shafts, two ends of each side fan shaft are provided with side connecting seats, the side connecting seats are fixedly connected with the box side plates of the bottom box body, the end parts of the side fan shafts are rotatably connected with the middle parts of the side connecting seats, driving threads are also arranged on the outer sides of the side fan shafts, and the side fan shafts acquire power provided by the transmission mechanism through the driving threads.
As a preferable technical scheme of the utility model, the transmission mechanism comprises a vertical transmission screw rod, a vertical connection seat, a transverse transmission screw rod and a screw rod connection plate, wherein a transmission perforation is formed in the middle cover plate, the top end of the vertical transmission screw rod penetrates through the transmission perforation to be in transmission connection with a driving thread of the wind fan shaft, a rod body of the vertical transmission screw rod is in transmission connection with a driving thread of the side fan shaft, the vertical connection seat is fixedly connected to the top surface of the box bottom plate, the bottom end of the vertical transmission screw rod is in rotation connection with the vertical connection seat, the top end and the bottom end of the screw rod connection plate are respectively and fixedly connected with the bottom surface of the heat dissipation screen plate and the top surface of the box bottom plate, a screw rod perforation is formed in the screw rod connection plate, one end of the transverse transmission screw rod penetrates through the screw rod perforation to be in transmission connection with the vertical transmission screw rod, and the rod body of the transverse transmission screw rod is in transmission connection with the driving thread of the inner fan shaft.
As a preferable technical scheme of the utility model, the wind driven fan is further provided with a driving motor, the driving motor is arranged on the wind driven seat, a rotor end of the driving motor is fixedly connected with the wind driven fan shaft, the driving motor is connected with a trigger switch, the trigger switch comprises a temperature sensor and a controller, the temperature sensor is arranged between the storage batteries, and the controller is used for receiving data of the temperature sensor and triggering the driving motor to be electrified and started when the preset temperature is reached.
As a preferable technical scheme of the utility model, a battery port and a plurality of threading holes are arranged in the middle cover plate in a penetrating manner, the battery port is provided with a movable cover plate, and the threading holes are used for the power supply line to penetrate.
As a preferable technical scheme of the utility model, the bottom box body comprises a box bottom plate and four box side plates which are correspondingly connected, wherein the top ends of the two box side plates incline outwards, and the two inclined box side plates correspond to the edge cover plate in position; the edge cover plate is an inclined plate body, and one side, away from the middle cover plate, of the edge cover plate is inclined towards the ground direction.
As a preferable technical scheme of the utility model, a dustproof net is arranged in the ventilation opening, a replaceable dustproof plate is arranged on the outer side of the edge cover plate, the dustproof plate comprises a dustproof frame and a dustproof screen plate, and the dustproof screen plate is arranged in the dustproof frame.
As a preferable technical scheme of the utility model, the edge of the outer side of the edge cover plate is provided with a raised slide bar, the inner side of the dustproof plate is provided with a slide groove matched with the slide bar, and the dustproof plate and the edge cover plate are detachably connected in a sliding manner through the slide bar and the slide groove.
In summary, the utility model has the following beneficial effects: the energy storage device is arranged in the soil environment at the bottom of the photovoltaic module, only the top end part of the bottom box body leaks out of the ground, namely the main body part is completely arranged in the soil, so that the photovoltaic module can be utilized to carry out sunshade and cooling, and the temperature of the storage battery can be stabilized by carrying out high-efficiency heat dissipation through the low temperature of the soil; when the energy storage of actual battery, will produce certain heat, lead to buried protective housing inside temperature to rise, at this moment, because the wind-force drive fan of heat dissipation mechanism is the setting in outside, and photovoltaic power plant generally sets up at open area, if there is wind in external environment this moment, can wind-force drive fan can rotate, and drive inside heat dissipation fan through drive mechanism and rotate, thereby arouse the inside and outside air flow of buried protective housing, take out inside heat into the air, realize the heat dissipation to the battery, this kind of heat dissipation mode need not electric drive, carry out automatic heat dissipation through photovoltaic power plant self geographic advantage, more energy-concerving and environment-protective, the radiating efficiency is higher, can realize spontaneous high-efficient heat dissipation as the energy storage device of photovoltaic power grid as a whole, guarantee the normal work and the life of inside battery assembly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of a side heat dissipation fan according to the present utility model.
In the figure: 1. a buried protective box; 2. a storage battery; 3. a bottom box; 4. a middle cover plate; 5. an edge cover plate; 6. supporting feet; 7. a heat dissipation screen; 8. a wind power fan shaft; 9. wind power fan blades; 10. a wind power driving seat; 11. a wind power connecting rod; 12. an inner fan shaft; 13. internal fan blades; 14. a side fan shaft; 15. side fan blades; 16. a vertical transmission screw rod; 17. a vertical connecting seat; 18. a screw rod is transversely driven; 19. a screw rod connecting plate; 20. a driving motor; 21. moving the cover plate; 22. a dust-proof plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, of the embodiments of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
As shown in fig. 1 and 2, the present utility model provides an energy storage device for a photovoltaic power grid, comprising a buried protective case 1, a heat dissipation mechanism and several sets of storage batteries 2,
The buried protective box 1 comprises a bottom box body 3 and a top box cover which are connected in a matching way, wherein the top box cover comprises a middle cover plate 4 and two edge cover plates 5 which are correspondingly connected, a ventilation opening is formed in the edge cover plates 5 in a penetrating way, the ventilation opening is used for realizing air flow inside and outside the box body, and heat dissipation is carried out when the temperature inside the box body is high; buried protective housing 1 is when in-service use, places in the soil of photovoltaic module below, then can utilize photovoltaic module sunshade, avoids the intensification that sunshine directly shines, can heat conduction through the low temperature of soil simultaneously for realize the relative low temperature in the case, can reduce actual battery 2 heat dissipation pressure.
The heat dissipation mechanism comprises a heat dissipation bracket, a plurality of wind driven fans and a plurality of internal heat dissipation fans, the heat dissipation bracket comprises a plurality of supporting feet 6 and a heat dissipation screen 7, two ends of the supporting feet 6 are respectively connected with the bottom surface corners of the heat dissipation screen 7 and the top surface of the box bottom plate of the bottom box body 3, and all the storage batteries 2 are uniformly placed on the top of the heat dissipation screen 7 at intervals;
The internal heat dissipation fan is arranged between the heat dissipation screen 7 and the box bottom plate, the wind driven fan is arranged on the outer side of the middle cover plate 4, the wind driven fan is connected with the internal heat dissipation fan through a transmission mechanism, and the wind driven fan is a fan which can rotate under natural wind power. Because the characteristics of the open geographic area of the photovoltaic power plant, the wind power in the power plant is ensured to a certain extent, and the wind power can be utilized to drive the wind power driving fan to rotate, so that the internal heat dissipation fan rotates to drive the air exchange in the box body, and the heat dissipation of the storage battery 2 in the box body is realized.
The working principle and the using process of the energy storage device are as follows: the energy storage device is arranged in the soil environment at the bottom of the photovoltaic module, only the top end part of the bottom box body 3 leaks out of the ground, namely the main body part is completely arranged in the soil, so that the photovoltaic module can be utilized to carry out sunshade and cooling, and the temperature of the storage battery 2 can be stabilized by carrying out high-efficiency heat dissipation through the low temperature of the soil; when the energy of the practical storage battery 2 is stored, certain heat is generated, the internal temperature of the buried protective box 1 is increased, at this time, because the wind driven fan of the heat dissipation mechanism is arranged outside, and the photovoltaic power plant is generally arranged in an open area, at this time, if the external environment has wind, the wind driven fan can rotate, and the transmission mechanism drives the internal heat dissipation fan to rotate, thereby causing the air flow inside and outside the buried protective box 1, taking the internal heat into the air, realizing the heat dissipation of the storage battery 2, the heat dissipation mode does not need electric drive, and the automatic heat dissipation is carried out through the self geographic advantage of the photovoltaic power plant, thereby being more energy-saving and environment-friendly, having higher heat dissipation efficiency, being capable of realizing spontaneous efficient heat dissipation as the whole of the energy storage device of the photovoltaic power grid, and guaranteeing the normal operation and the service life of the internal storage battery 2 assembly.
As one embodiment of the utility model, the wind driven fan comprises a wind fan shaft 8, a plurality of wind blades 9, a wind driven seat 10 and a wind driven connecting rod 11, wherein the bottom end of the wind driven connecting rod 11 is fixedly connected with the outer side of a top box cover, the top end of the wind driven connecting rod 11 is fixedly connected with the bottom end of the wind driven seat 10, one end of the wind fan shaft 8 is rotationally connected with the wind driven connecting seat, the wind blades 9 are uniformly connected with the other end of the wind fan shaft 8, driving threads matched with a transmission mechanism are arranged on the outer side of the wind fan shaft 8, and when the wind driven fan rotates, a power source is provided for the transmission mechanism through the rotation of the driving threads.
The internal heat dissipation fan comprises an internal fan shaft 12 and a plurality of internal fan blades 13 which are uniformly connected with the outer side of the internal fan shaft 12, wherein internal connecting seats are arranged at two ends of the internal fan shaft 12, the internal connecting seats are fixedly connected with box side plates of the bottom box body 3, the end parts of the internal fan shaft 12 are rotationally connected with the middle parts of the internal connecting seats, driving threads are also arranged on the outer side of the internal fan shaft 12, and the internal fan shaft 12 obtains power provided by a transmission mechanism through the driving threads.
The heat dissipation mechanism further comprises a plurality of side heat dissipation fans, the side heat dissipation fans are arranged at positions below the air ventilation openings, each side heat dissipation fan comprises a side fan shaft 14 and a plurality of side fan blades 15 which are uniformly connected to the outer side of the side fan shaft 14, two ends of each side fan shaft 14 are provided with side connection seats, the side connection seats are fixedly connected with box side plates of the bottom box body 3, the end parts of the side fan shafts 14 are rotatably connected with the middle parts of the side connection seats, driving threads are also arranged on the outer sides of the side fan shafts 14, and the side fan shafts 14 acquire power provided by the transmission mechanism through the driving threads. The side heat dissipation fan can strengthen the air flow in the box body, especially make the air flow between the battery 2 strengthen, have more efficient heat dissipation ability.
Further, the transmission mechanism comprises a vertical transmission screw 16, a vertical connecting seat 17, a transverse transmission screw 18 and a screw connecting plate 19, wherein a transmission perforation is formed in the middle cover plate 4, the top end of the vertical transmission screw 16 penetrates through the transmission perforation to be in transmission connection with driving threads of the wind fan shaft 8, the rod body of the vertical transmission screw 16 is in transmission connection with driving threads of the side fan shaft 14, the vertical connecting seat 17 is fixedly connected to the top surface of the box bottom plate, the bottom end of the vertical transmission screw 16 is in rotary connection with the vertical connecting seat 17, the top end and the bottom end of the screw connecting plate 19 are respectively in rotary connection with the bottom surface of the heat dissipation screen 7 and the top surface of the box bottom plate, the screw connecting plate 19 is provided with a screw perforation, the transverse transmission screw 18 penetrates through the screw perforation to be in rotary connection with the screw connecting plate 19, one end of the transverse transmission screw 18 is in transmission connection with the vertical transmission screw 16, and the rod body of the transverse transmission screw 18 is in transmission connection with driving threads of the inner fan shaft 12.
The driving principle of the driving mechanism adopted in the utility model is that the fan shaft and the driving screw threads on the screw rod are in matched connection, when one rotates, the other is naturally driven to rotate together under the action of the screw threads, so that each fan blade in the interior is driven to rotate to generate air flow.
As an embodiment of the present utility model, the wind driven fan is further configured with a driving motor 20, the driving motor 20 is installed on the wind driven seat 10, a rotor end of the driving motor 20 is fixedly connected with the wind driven fan shaft 8, the driving motor 20 is connected with a trigger switch, the trigger switch comprises a temperature sensor and a controller, the temperature sensor is arranged between the storage batteries 2, and the controller is used for receiving data of the temperature sensor and triggering the driving motor 20 to be electrified and started when a preset temperature is reached. When the natural wind power condition is insufficient to perform efficient heat dissipation, extra power is adopted for driving, so that the temperature of the storage battery 2 can be controlled in time, and larger economic loss is avoided.
As an embodiment of the utility model, the middle cover plate 4 is provided with a battery opening and a plurality of threading holes in a penetrating way, the battery opening is provided with a movable cover plate 21 for overhauling the internal devices of the box, and the threading holes are used for the power supply line to pass through. The bottom box body 3 comprises a box bottom plate and four box side plates which are correspondingly connected, wherein the top ends of the two box side plates incline outwards, the two inclined box side plates correspond to the edge cover plate 5 in position, and the space inside the box body is enlarged, so that air flow and heat dissipation are facilitated; the edge cover plate 5 is an inclined plate body, and one side, far away from the middle cover plate 4, of the edge cover plate 5 is inclined towards the ground direction, namely the ventilation port can be raised, so that the air flow inside and outside can be more convenient.
As an embodiment of the present utility model, a dust screen is disposed in the ventilation port, a replaceable dust screen 22 is disposed outside the edge cover 5, and the dust screen 22 includes a dust-proof frame and a dust-proof screen plate, and the dust-proof screen plate is disposed inside the dust-proof frame. The outside border of border apron 5 is provided with bellied draw runner, and the inboard of dust guard 22 is provided with the spout that matches with the draw runner, and dust guard 22 and border apron 5 carry out detachable sliding connection through draw runner and spout. Can prevent dust at the ventilative mouth, reduce outside dust and cause the interference to the box internal device.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations of the present utility model will be apparent to those skilled in the art; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.