CN214506931U

CN214506931U - Direct current side distributed energy storage system for photovoltaic power station

Info

Publication number: CN214506931U
Application number: CN202120957699.6U
Authority: CN
Inventors: 丁飞; 周荃; 吴榆俊; 杨兆成; 高文杰; 钟森; 郑潇; 王雨奇; 李朝辉; 徐兆麟; 叶子青; 顾建平
Original assignee: Danyang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Danyang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2021-10-26
Anticipated expiration: 2031-05-06

Abstract

The utility model discloses a DC side distributed energy storage system for a photovoltaic power station, which relates to the technical field of photovoltaic power stations and includes a photovoltaic cell panel, an output end of the photovoltaic cell panel is electrically connected with a photovoltaic direct current power converter, and the photovoltaic The output end of the DC power converter is electrically connected with an energy storage system, and a power converter body is arranged inside the photovoltaic DC power converter. The utility model completes the extraction of the outside air through the air suction device and the cooling box, cooperates with the heat absorption and cooling of the cooling pipe and the condensing plate to complete the temperature reduction, and then dries the cold air by the drying plate, and then utilizes the wind force generated by the air suction device. Complete the circulation of cold air, avoiding the problem that due to the long-term high-load working state, it will often release a higher temperature. If the heat transfer is not carried out in time, the conversion efficiency of the device will be greatly affected. The working efficiency of the device is improved, and the power conversion efficiency of the device is guaranteed.

Description

Direct current side distributed energy storage system for photovoltaic power station

Technical Field

The utility model relates to an energy storage system relates to photovoltaic power plant technical field, concretely relates to photovoltaic power plant is with direct current side distributing type energy storage system.

Background

In recent years, the excessive utilization of fossil energy by human beings has caused problems of environmental pollution, climate warming and the like, the energy structure must be adjusted, the dependence on fossil fuel is reduced, and the status and the effect of renewable energy such as solar energy and the like in the existing energy structure are improved.

The following problems exist in the prior art:

1. when the existing photovoltaic direct-current electric energy converter works, the existing photovoltaic direct-current electric energy converter is in a high-load working state for a long time, and the existing photovoltaic direct-current electric energy converter often releases high temperature, so that the conversion efficiency of the device is greatly influenced if heat is not transferred in time, the working efficiency of the device is reduced, and the practicability of the device is reduced;

2. when the existing photovoltaic direct current electric energy converter is used, the electric energy flows more frequently during use, the line is easy to age, electric power leakage and spontaneous combustion phenomena can occur seriously, huge economic loss is caused, the service life of equipment is shortened, and the use cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a direct current side distributed energy storage system for a photovoltaic power station, which aims to have the capability of reducing the temperature, and solves the problems that the conversion efficiency of the device is greatly influenced, the working efficiency of the device is reduced and the practicability is reduced because the device is always released with higher temperature when the device is in a high-load working state for a long time and heat is transferred in time; the other purpose is to solve the problems that electric energy flows frequently during use, the line is easy to age, electric power leakage and spontaneous combustion phenomena can occur in severe cases, huge economic loss is caused, the service life of equipment is shortened, and the use cost is increased, so that the service life of the equipment is prolonged, and the use cost is reduced.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a photovoltaic power plant is with direct current side distributed energy storage system, includes photovoltaic cell panel, photovoltaic cell panel's output electric connection has photovoltaic direct current electric energy converter, photovoltaic direct current electric energy converter's output electric connection has energy storage system, photovoltaic direct current electric energy converter's inside is provided with the electric energy converter body, photovoltaic direct current electric energy converter's bottom surface four corners fixed mounting has fixing device, photovoltaic direct current electric energy converter's both sides are provided with cooling body, fixed mounting has protection mechanism on photovoltaic direct current electric energy converter's the internal surface.

The cooling mechanism comprises a cooling box, a cooling pipe is arranged in the cooling box, and a condensing plate arranged below the cooling pipe is fixedly arranged in the cooling box.

The protection mechanism comprises a protection box, wherein a dry powder bag is arranged inside the protection box, and a conductive tube is arranged outside the protection box.

The utility model discloses technical scheme's further improvement lies in: the two ends of the cooling pipe are fixedly connected with the inner surface of the cooling box, the drying plate is arranged below the condensing plate, the two ends of the drying plate are fixedly connected with the inner surface of the cooling box, the cooling pipe is uniformly distributed on the inner surface of the cooling box, and cooling liquid is filled in the cooling box.

Adopt above-mentioned technical scheme, cooling tube, condensation plate and drying plate in this scheme cooperate jointly, carry out cooling to the air.

The utility model discloses technical scheme's further improvement lies in: the outer surface of the cooling box is fixedly connected with the inner wall of the photovoltaic direct-current electric energy converter, the outer side of the cooling box is fixedly connected with an air suction device, an air outlet hole is formed in the top of the cooling box, and a circulating air hole is formed in the bottom end of the side face of the cooling box.

By adopting the technical scheme, the air outlet hole, the circulating air hole and the cooling box in the scheme are matched together to realize air circulation.

The utility model discloses technical scheme's further improvement lies in: the one end of current-conducting tube extends to the inside and the fixedly connected with current conducting plate of guard box, the surface of current conducting plate and the internal surface fixed connection of guard box, the inside fixedly connected with of guard box sets up the electro-magnet in the current conducting plate side, the wiring end of electro-magnet and the output electric connection of current conducting plate.

By adopting the technical scheme, the protection box, the electromagnet and the current conducting plate in the scheme are matched together to absorb external electric power, so that the electromagnet has magnetic force.

The utility model discloses technical scheme's further improvement lies in: the inside fixed mounting of guard box has the soft fagging of setting in electro-magnet one side, the inboard of soft fagging is provided with the magnetic pole, the outside fixed mounting of soft fagging has the sword that breaks.

By adopting the technical scheme, the soft supporting plate, the magnetic pole, the breaking knife and the dry powder capsule in the scheme are matched together, and the dry powder capsule is broken by utilizing the characteristic that like magnetism is repulsive, and dry powder is filled in the photovoltaic direct current electric energy converter to carry out fire extinguishing operation.

The utility model discloses technical scheme's further improvement lies in: the utility model discloses a flexible fagging, including the electromagnetism protective sheath, the electromagnetism protective sheath is provided with in the outside of electro-magnet, the both ends of electromagnetism protective sheath are connected with the internal surface fixed of guard box, one side of electromagnetism protective sheath is connected with the surface fixed of current conducting plate.

The utility model discloses technical scheme's further improvement lies in: the cooling box is characterized in that an air filtering plate is arranged at the top end of the side face of the inner cavity of the cooling box, the two ends of the air filtering plate are fixedly connected with the inner surface of the cooling box, and a wind dispersing plate is arranged at the top of the air filtering plate and is uniformly distributed on the top of the air filtering plate.

By adopting the technical scheme, the air dispersing plate and the air filtering plate in the scheme are matched together, so that air is fully contacted with the cooling pipe to cool.

Owing to adopted above-mentioned technical scheme, the utility model discloses relative prior art, the technological progress who gains is:

1. the utility model provides a photovoltaic power plant is with direct current side distributing type energy storage system, adopt the device that induced drafts, the cooler bin, the cooling tube, cooperation between condenser plate and the drying plate, through the extraction of the external air of device and cooler bin completion induced drafts, the heat absorption cooling of cooperation cooling tube and condenser plate, accomplish the reduction of temperature, carry out the drying to the cold air by the drying plate again, recycle the circulation of cold air is accomplished to the wind-force that the device that induced drafts produced, avoided because be in high load operating condition for a long time, its self often can release higher temperature, if not carry out thermal transfer in time, can make the conversion efficiency of device receive the problem of very big influence, the work efficiency of device has been improved, the electric energy conversion efficiency of device has been ensured.

2. The utility model provides a photovoltaic power plant is with direct current side distributing type energy storage system, adopt the electric energy converter body, the electro-magnet, the current conducting plate, soft fagging, the magnetic pole, break the cooperation between sword and the dry powder bag, absorb the loss electric energy through current conducting plate and electro-magnet, make the electro-magnet possess magnetic force, repel mutually with the magnetic pole, the cooperation is broken the sword and is pierced through the dry powder bag, release dry powder, the operation of putting out a fire, avoided because the electric energy flows comparatively frequently when using, the ageing of circuit easily appears, can appear electric power's leakage and spontaneous combustion phenomenon when serious, cause huge economic loss's problem, the service life of device is prolonged, the security when having ensured the device and using.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic perspective cross-sectional view of a photovoltaic dc power converter of the present invention;

FIG. 3 is a schematic perspective sectional view of the cooling box of the present invention;

fig. 4 is a schematic perspective sectional view of the structure protection box of the present invention.

In the figure: 1. a photovoltaic direct current power converter; 11. a power converter body;

2. a cooling mechanism; 21. an air suction device; 22. a cooling tank; 221. a cooling tube; 222. a condensing plate; 223. Drying the plate; 224. a wind-dispersing plate; 225. a wind filtering plate;

3. a fixing device;

4. a protection mechanism; 41. a protection box; 411. an electromagnetic protective sleeve; 412. an electromagnet; 413. a conductive plate; 414. a flexible supporting plate; 415. a magnetic pole; 416. a rupturing knife; 417. and (4) dry powder capsules.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example 1

As shown in fig. 1-4, the present invention provides a dc-side distributed energy storage system for a photovoltaic power plant, which comprises a photovoltaic cell panel, an output end of the photovoltaic cell panel is electrically connected to a photovoltaic dc power converter 1, an output end of the photovoltaic dc power converter 1 is electrically connected to an energy storage system, an energy converter body 11 is disposed inside the photovoltaic dc power converter 1, fixing devices 3 are fixedly disposed at four corners of a bottom surface of the photovoltaic dc power converter 1, cooling mechanisms 2 are disposed at two sides of the photovoltaic dc power converter 1, a protection mechanism 4 is fixedly disposed on an inner surface of the photovoltaic dc power converter 1, the cooling mechanism 2 comprises a cooling box 22, a cooling pipe 221 is disposed inside the cooling box 22, a condensation plate 222 disposed below the cooling pipe 221 is fixedly disposed inside the cooling box 22, the protection mechanism 4 comprises a protection box 41, the inside of guard box 41 is provided with dry powder bag 417, the outside of guard box 41 is provided with the contact tube, the both ends of cooling tube 221 and the internal surface fixed connection of cooler bin 22, the below of condenser plate 222 is provided with drying plate 223, the both ends of drying plate 223 and the internal surface fixed connection of cooler bin 22, cooling tube 221 evenly distributed is on the internal surface of cooler bin 22, the inside packing of cooler bin 22 has the coolant liquid, the surface of cooler bin 22 and the inner wall fixed connection of photovoltaic direct current power converter 1, the outside fixedly connected with of cooler bin 22 induced drafts device 21, the exhaust vent has been seted up at the top of cooler bin 22, circulating air hole has been seted up to the side bottom of cooler bin 22.

In this embodiment, the device 21 that induced drafts extracts during the outside air carries out cooler bin 22, cooperation cooling tube 221 cools off the air, discharge cold air to photovoltaic direct current power converter 1's casing through the exhaust vent inside, take out the hot-air among the photovoltaic direct current power converter 1, carry the leading-in cooler bin 22 of thermal air by circulation wind hole again, realize the circulation of air, rethread drying plate 223 dries the air, can carry out the cooling of air once more, realize the purpose of cooling, the work efficiency of device has been improved, the safe effective propulsion of device cooling activity has been ensured.

Example 2

As shown in fig. 1-4, on the basis of embodiment 1, the utility model provides a technical solution: preferably, one end of the conductive tube extends into the protection box 41 and is fixedly connected with the conductive plate 413, the outer surface of the conductive plate 413 is fixedly connected with the inner surface of the protection box 41, the electromagnet 412 arranged on the side surface of the conductive plate 413 is fixedly connected inside the protection box 41, the terminal of the electromagnet 412 is electrically connected with the output end of the conductive plate 413, the flexible supporting plate 414 arranged on one side of the electromagnet 412 is fixedly arranged inside the protection box 41, the magnetic pole 415 is arranged on the inner side of the flexible supporting plate 414, and the breaking knife 416 is fixedly arranged on the outer side of the flexible supporting plate 414.

In this embodiment, the conductive tube and the conductive plate 413 guide the external leakage current to the electromagnet 412, and energize the electromagnet 412, so that the electromagnet 412 has magnetism, and the flexible supporting plate 414 is stressed and deformed by the repulsion characteristic of the electromagnet 412 and the like magnetic pole of the magnetic pole 415 to drive the rupturing knife 416 to change its position, and contact with the dry powder capsule 417 to puncture the dry powder capsule 417 and release the internal dry powder, so that the dry powder is filled in the photovoltaic dc power converter 1, thereby reducing the loss caused by spontaneous combustion and prolonging the service life of the device.

Example 3

As shown in fig. 1-4, on the basis of embodiment 1, the utility model provides a technical solution: preferably, the magnetic poles 415 are uniformly distributed on the inner side of the flexible supporting plate 414, the electromagnetic protecting sleeve 411 is arranged on the outer side of the electromagnet 412, two ends of the electromagnetic protecting sleeve 411 are fixedly connected with the inner surface of the protecting box 41, one side of the electromagnetic protecting sleeve 411 is fixedly connected with the outer surface of the conducting plate 413, the top end of the side surface of the inner cavity of the cooling box 22 is provided with the air filter plate 225, two ends of the air filter plate 225 are fixedly connected with the inner surface of the cooling box 22, the top of the air filter plate 225 is provided with the air distribution plate 224, and the air distribution plate 224 is uniformly distributed on the top of the air filter plate 225.

In this embodiment, the setting of magnetic pole 415 provides sufficient repulsion for soft fagging 414 for break sword 416 and can puncture dry powder bag 417 fast, with the fastest loss that reduces, simultaneously the board 224 that dredges and strain aerofoil 225 can carry out the separation to a certain extent to the air, make the velocity of flow of air slow down, can fill sufficient contact with cooling tube 221, cool down, improve the cooling efficiency of device, practicality and security when having ensured the device and using.

The working principle of the dc-side distributed energy storage system for the photovoltaic power station is described in detail below.

As shown in fig. 1-4, when in use, firstly, the photovoltaic cell panel absorbs light energy to generate direct current, then the photovoltaic cell panel is matched with the electric energy converter body 11 to convert the electric energy, the converted electric energy is transmitted to the energy storage system to be stored, meanwhile, the air suction device 21 is started, the air suction device 21 is used to introduce outside air into the cooling box 22, then the cooling pipe 221 is used to cool the air, the ventilation plate 224 and the air filter plate 225 are used to block the air, so that the air flow rate is slowed down, the air is fully cooled, then the cold air is discharged into the shell of the photovoltaic direct current electric energy converter 1 through the air outlet, the heat is taken out to be cooled, the air carrying the heat is introduced into the cooling box 22 through the circulating air hole, the circulation of the air is completed, the purpose in cooling is achieved, if the device is aged and electric power leaks, the leakage current is guided to the electromagnet 412 through the external conductive pipe and the conductive plate 413, the electromagnet 412 generates magnetic force by electric power and is repelled from the magnetic pole 415 to drive the flexible supporting plate 414 to deform, so that the breaking knife 416 moves to puncture the dry powder bag 417, and after the dry powder bag 417 is punctured, dry powder is dissipated into the photovoltaic direct current electric energy converter 1, thereby reducing the loss caused by spontaneous combustion after the equipment is aged, and protecting the equipment.

The present invention has been described in detail with reference to the above general description, but it will be apparent to one of ordinary skill in the art that modifications and improvements can be made to the invention. Therefore, modifications or improvements without departing from the spirit of the invention are within the scope of the invention.

Claims

1. A DC side distributed energy storage system for a photovoltaic power station, comprising a photovoltaic panel, an output end of the photovoltaic panel is electrically connected with a photovoltaic DC power converter (1), the photovoltaic DC power converter (1) An energy storage system is electrically connected to the output end of the photovoltaic DC power converter (1), a power converter body (11) is arranged inside the photovoltaic DC power converter (1), and four corners of the bottom surface of the photovoltaic DC power converter (1) are fixedly installed with The fixing device (3) is characterized in that: cooling mechanisms (2) are provided on both sides of the photovoltaic DC power converter (1), and a protection mechanism is fixedly installed on the inner surface of the photovoltaic DC power converter (1). (4);

The cooling mechanism (2) includes a cooling box (22), a cooling pipe (221) is arranged inside the cooling box (22), and a cooling pipe (221) is fixedly installed inside the cooling box (22). ) below the condensation plate (222);

The protection mechanism (4) includes a protection box (41), the inside of the protection box (41) is provided with a dry powder capsule (417), and the outside of the protection box (41) is provided with a conductive tube.

2 . The DC side distributed energy storage system for photovoltaic power station according to claim 1 , wherein the two ends of the cooling pipe ( 221 ) are fixedly connected to the inner surface of the cooling box ( 22 ). A drying plate (223) is arranged below the condensation plate (222), both ends of the drying plate (223) are fixedly connected to the inner surface of the cooling box (22), and the cooling pipes (221) are evenly distributed in the cooling box (221). 22), the inside of the cooling box (22) is filled with cooling liquid.

3. A DC side distributed energy storage system for a photovoltaic power station according to claim 1, characterized in that: the outer surface of the cooling box (22) is fixedly connected to the inner wall of the photovoltaic DC power converter (1), An air suction device (21) is fixedly connected to the outer side of the cooling box (22), an air outlet hole is formed at the top of the cooling box (22), and a circulation air hole is formed at the bottom end of the side surface of the cooling box (22). .

4. The DC side distributed energy storage system for a photovoltaic power station according to claim 1, wherein one end of the conductive pipe extends to the inside of the protection box (41) and is fixedly connected with a conductive plate (413) , the outer surface of the conductive plate (413) is fixedly connected with the inner surface of the protective box (41), and the interior of the protective box (41) is fixedly connected with an electromagnet (412) arranged on the side of the conductive plate (413), The terminal of the electromagnet (412) is electrically connected with the output end of the conductive plate (413).

5. The DC side distributed energy storage system for a photovoltaic power station according to claim 1, characterized in that: the inside of the protection box (41) is fixedly installed with a flexible device arranged on one side of the electromagnet (412). A support plate (414), the inner side of the soft support plate (414) is provided with a magnetic pole (415), and the outer side of the soft support plate (414) is fixedly installed with a rupture knife (416).

6. The DC side distributed energy storage system for a photovoltaic power station according to claim 5, characterized in that: the magnetic poles (415) are evenly distributed on the inner side of the flexible support plate (414), and the electromagnet The outer side of (412) is provided with an electromagnetic protective cover (411), the two ends of the electromagnetic protective cover (411) are fixedly connected with the inner surface of the protective box (41), and one side of the electromagnetic protective cover (411) is connected to the conductive The outer surface of the plate (413) is fixedly attached.

7. The DC side distributed energy storage system for a photovoltaic power station according to claim 1, wherein the cooling box (22) is provided with an air filter plate (225) at the top of the inner cavity side, and the filter Both ends of the air plate (225) are fixedly connected to the inner surface of the cooling box (22), and the top of the air filter plate (225) is provided with an air evacuation plate (224), and the air evacuation plate (224) is evenly distributed on the on top of the air filter panel (225).