Energy storage device of distribution transformer

Abstract

The utility model relates to the technical field of energy storage devices, in particular to an energy storage device of a distribution transformer. Comprising a prying seat, a box body is fixed at the upper end of the prying seat, a lower partition plate is fixed in the lower part of the box body, an energy storage battery is fixed in an energy storage cavity, a first partition plate and a second partition plate are fixed in the box body above the lower partition plate, a high-voltage interval is installed in the first cavity, a transformer is installed in the second cavity, and a plurality of converter cabinets are installed in a third cavity. Air ducts are mounted on the lower partition plate in the first cavity and the second cavity, and the first cavity and the second cavity are communicated with the box body below the lower partition plate through the air ducts in the first cavity and the second cavity respectively. When the external environment temperature of the box body is low, heat generated when the high-voltage interval, the transformer and the converter cabinet work can be transferred into the energy storage cavity, the temperature of the energy storage battery can be kept, and the capacity of the energy storage battery is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of energy storage device technical field, specifically to a kind of distribution transformer energy storage device. BACKGROUND

[0002] At present, with the vigorous development of new energy power generation market, energy storage industry also develops rapidly, and the products prepackaged energy storage box-type substation matched with it are also widely used. Energy storage system mainly includes PCS (converter), energy storage battery, EMS (energy management system), transformer, high-voltage switchgear and low-voltage auxiliary cabinet, etc. If installed in a civil power distribution room, the equipment is scattered, the land area is large, which is not conducive to rapid and effective operation and maintenance, and the construction period is long and the cost is high.

[0003] The patent document with publication number CN215299959U discloses a new energy storage and conversion step-up integrated machine box of dry-type transformer, which includes a box body. The box body includes a box body base, a box body side plate and a box body top cover. The box body bottom is provided with a box body grounding point and a box body lifting point. The box body is divided into a transformer chamber, a PCS chamber, a high-voltage chamber and a low-voltage chamber by a partition. The transformer chamber, the high-voltage chamber, the PCS chamber and the low-voltage chamber are respectively provided with a transformer chamber door plate, a high-voltage chamber door plate, a PCS chamber door plate and a low-voltage chamber door plate. By reasonably arranging the electrical elements of the energy storage box transformer, the low-voltage distribution cabinet is arranged on the opposite side of the high-voltage interval, and the partition is used in the middle to improve the protection level of the box transformer. By adjusting the transformer outlet position, the copper bar usage of the box transformer is reduced, thereby reducing the equipment power loss, reducing the equipment production cost and use cost, and improving the market competitiveness. The utility model integrates PCS, EMS, transformer, high-voltage switchgear and low-voltage distribution cabinet into a container, which has the functions of bidirectional conversion, battery management and system transformation. This box transformer adopts prepackaged design, which is convenient for transportation and installation, and greatly reduces the product cost. However, when the outside environment temperature is low in winter, the chemical reaction of the energy storage battery slows down, the internal resistance of the battery increases, and the capacity of the energy storage battery decreases. If the heat of the high-voltage interval, transformer and conversion control cabinet can be transported to the storage battery, the temperature of the energy storage battery can be maintained, and the capacity of the energy storage battery can be effectively improved in winter. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a distribution transformer energy storage device which can improve the capacity of energy storage battery when the temperature of the environment outside the box is low.

[0005] In order to achieve the above purpose, the technical scheme provided by the utility model is:

[0006] The utility model provides an energy storage device of distribution transformer, including pry seat, the upper end of pry seat is fixed with box, the upper end of box is provided with ventilating grille, the lower part of box is fixed with lower baffle in, the part of box below lower baffle is energy storage cavity, is fixed with energy storage battery in energy storage cavity, the lower baffle of box is fixed with first baffle and second baffle in, first baffle and second baffle divide the part of box above lower baffle into first cavity, second cavity and third cavity, install high voltage interval in first cavity, install transformer in second cavity, install multiple converter cabinet in third cavity, still be provided with energy management system in third cavity, the lower baffle part in first cavity and second cavity all are installed with air cylinder, and first cavity and second cavity are communicated with the part of box below lower baffle through air cylinder in it respectively, the lower end of box is provided with air hole, and the side of the box part below lower baffle is provided with air cylinder, the side wall of the box of converter cabinet is provided with the air duct that is communicated, and the air outlet of converter cabinet is communicated with the part of box below lower baffle through air duct, and the control unit of the control air flow in air duct is set up on the box.

[0007] Specifically, the box below the lower baffle is fixed with a filter plate, the outlet end of the air cylinder communicated with the first cavity and the second cavity is communicated with the cavity between the filter plate and the lower baffle, and the air cylinder on the side of the box below the lower baffle is below the filter plate.

[0008] Specifically, a filter screen is installed in the air hole.

[0009] Specifically, the air duct includes an inner hole formed on the side wall of the box, the inner hole is communicated with the third cavity, one end of the channel in the side wall of the box is communicated with the inner hole, and the other end of the channel is communicated with the cavity between the filter plate and the lower baffle.

[0010] Specifically, a sealing frame is fixed and sealed on the inner wall of the box outside the inlet end of the inner hole, the converter cabinet is in sealing contact with the sealing frame, the heat dissipation air outlet of the converter cabinet is correspondingly communicated with the internal space of the sealing frame, and the hot air discharged from the heat dissipation air outlet of the converter cabinet can enter the cavity between the filter plate and the lower baffle through the inner hole and the channel.

[0011] Specifically, the control unit includes a through hole formed on the side wall of the box, the through hole is communicated with the outside of the box and the channel, a sliding groove is formed on the side wall of the box below the through hole, the sliding groove is communicated with the through hole, a lower sealing plate is slidably and sealingly connected in the sliding groove, an upper sealing plate is fixed on the upper end of the lower sealing plate, and the upper sealing plate can seal and block the through hole; after the lower sealing plate and the upper sealing plate move towards the inside of the box, the lower sealing plate can block the channel, and the upper sealing plate enters the channel from the through hole, the air flowing into the channel from the inner hole is discharged to the outside of the box through the through hole; after the lower sealing plate and the upper sealing plate move towards the outside of the box, the upper sealing plate can block the through hole, and the lower sealing plate makes the channel through, and the air flowing into the channel from the inner hole enters the cavity between the filter plate and the lower baffle.

[0012] Specifically, a filter screen is installed in the inlet end of the inner hole.

[0013] Specifically, the air cylinder comprises a cylinder body, a fan is fixedly installed in the cylinder body, an inner rod is fixedly installed in the cylinder body, a screw rod concentric with the cylinder body is threadedly connected to the inner rod, one end of the screw rod extends to the outside of the cylinder body, a cover is fixedly installed on the screw rod part on the outside of the cylinder body in a concentric manner, and the cover can block the end of the cylinder body on one side by rotating the screw rod.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. When the temperature of the external environment of the box is low, the heat generated by the high-voltage interval, transformer and converter cabinet during work can be transferred to the energy storage cavity, the working temperature of the energy storage battery can be maintained, and the capacity of the energy storage battery is ensured.

[0016] 2. When the temperature of the external environment of the box is high, the heat generated by the high-voltage interval, transformer and converter cabinet during work can be avoided to be transferred to the energy storage cavity, the high temperature of the energy storage battery can be avoided, and the normal work of the energy storage battery is ensured.

[0017] 3. When the temperature of the external environment of the box is high, the heat generated by the converter cabinet can be discharged to the outside of the box, and the high temperature in the box is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an internal structure diagram of the box.

[0019] Figure 2 It is a position relation diagram of the first partition plate and the second partition plate in the box.

[0020] Figure 3 It is a schematic diagram of conveying the hot air discharged from the heat dissipation air outlet of the converter cabinet to the cavity between the filter plate and the lower partition plate.

[0021] Figure 4 It is Figure 3 an enlarged view of the A area.

[0022] Figure 5 It is a schematic diagram of conveying the hot air discharged from the heat dissipation air outlet of the converter cabinet to the cavity between the filter plate and the lower partition plate.

[0023] Figure 6 It is Figure 5 an enlarged view of the B area.

[0024] Figure 7 It is a sectional view of the air cylinder.

[0025] The names of the parts in the drawings are: 1, box, 2, lower partition, 3, filter plate, 4, first partition, 5, second partition, 6, high-voltage interval, 7, transformer, 8, converter cabinet, 9, air duct, 10, energy storage battery, 11, pry seat, 12, air hole, 13, energy management system, 14, sealing frame, 15, inner hole, 16, channel, 17, through hole, 18, lower sealing plate, 19, upper sealing plate, 901, barrel, 902, fan, 903, inner rod, 904, screw rod, 905, cover. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0027] Embodiment one: refer to Figures 1-2 As shown in the figure, a power distribution transformer energy storage device, including pry seat 11, pry seat 11 upper end fixed with box 1, box 1 upper end is provided with air grille.

[0028] Box 1 lower part is fixed with lower partition 2, and the part of box 1 below lower partition 2 is energy storage cavity, and energy storage battery 10 is fixed in energy storage cavity.

[0029] Lower partition 2 upper part in box 1 is fixed with first partition 4 and second partition 5, and first partition 4 and second partition 5 divide the part of box 1 above lower partition 2 into first cavity, second cavity and third cavity.

[0030] High-voltage interval 6 is installed in the first cavity. Transformer 7 is installed in the second cavity. A plurality of converter cabinets 8 are installed in the third cavity. Energy management system 13 is also provided in the third cavity.

[0031] The part of lower partition 2 in the first cavity and the second cavity is installed with air duct 9, and the first cavity and the second cavity are communicated with the part of box 1 below lower partition 2 through air duct 9 in it, air hole 12 is opened in the lower end of box 1, and filter screen is installed in air hole 12.

[0032] The side of box 1 below lower partition 2 is provided with air duct 9.

[0033] The part of lower partition 2 in the first cavity and the second cavity is installed with air duct 9, and the first cavity and the second cavity are communicated with the part of box 1 below lower partition 2 through air duct 9 in it, air hole 12 is opened in the lower end of box 1, and filter screen is installed in air hole 12.

[0034] The air duct 9 comprises a barrel 901, a fan 902 is fixedly installed in the barrel 901, an inner rod 903 is fixedly installed in the barrel 901, a screw rod 904 concentric with the barrel 901 is threadedly connected to the inner rod 903, one end of the screw rod 904 extends to the outside of the barrel 901, and a cover 905 is concentrically fixed on the part of the screw rod 904 outside the barrel 901. Rotating the screw rod 904 makes the cover 905 close to the barrel 901, and the cover 905 can block the end of the barrel 901 on one side.

[0035] The high-voltage compartment 6 and the transformer 7 generate heat during operation, and thus the temperature in the first cavity and the second cavity increases. When the ambient temperature outside the cabinet 1 is low, the cover 905 of the air duct 9 in the first cavity and the second cavity is opened, and the air duct 9 on one side of the cabinet 1 below the lower partition plate 2 is kept blocked.

[0036] The fan 902 of the air duct 9 in the first cavity and the second cavity is started, and the hot air in the first cavity and the second cavity can flow to the cavity between the lower partition plate 2 and the filter plate 3, the hot air is distributed by the filter plate 3 and then enters the part of the cabinet 1 below the filter plate 3, thereby increasing the temperature in the part of the cabinet 1 below the filter plate 3, and the energy storage battery 10 can be prevented from working in a low-temperature environment.

[0037] The air entering the part of the cabinet 1 below the filter plate 3 can be discharged through the air hole 12, so that the hot air in the first cavity and the second cavity can continuously enter the part of the cabinet 1 below the filter plate 3.

[0038] After the hot air in the first cavity and the second cavity enters the part of the cabinet 1 below the filter plate 3, the air outside the cabinet 1 enters the first cavity and the second cavity through the air permeable grille at the upper end of the cabinet 1, and the cold air outside the cabinet 1 can cool the high-voltage compartment 6 and the transformer 7.

[0039] When the ambient temperature outside the cabinet 1 is high, the fan 902 of the air duct 9 in the first cavity and the second cavity is turned off, and the cover 905 of the air duct 9 in the first cavity and the second cavity is closed, so that the heat in the first cavity and the second cavity cannot enter between the lower partition plate 2 and the filter plate 3 through the air duct 9 in the first cavity and the second cavity.

[0040] The cover 905 of the air duct 9 on one side of the cabinet 1 below the lower partition plate 2 is opened, the fan 902 of the air duct 9 on one side of the cabinet 1 below the lower partition plate 2 is started, the air outside the cabinet 1 enters the part of the cabinet 1 below the lower partition plate 2 and is then discharged through the air hole 12, so that the air in the part of the cabinet 1 below the lower partition plate 2 flows, and the heat generated during charging and discharging of the energy storage battery 10 is discharged to the outside of the cabinet 1, thereby preventing the energy storage battery 10 from being high-temperature.

[0041] Embodiment Two: Based on Embodiment One, referring to Figures 1-7As shown, a communication air duct is arranged in the side wall of the cabinet 1 on one side of the converter cabinet 8, and the heat dissipation air outlet of the converter cabinet 8 is in communication with the cabinet 1 part below the lower partition plate 2 through the communication air duct. Specifically, the air outlet end of the communication air duct is in communication with the cavity between the filter plate 3 and the lower partition plate 2. The cabinet 1 is provided with a control unit for controlling the air flow direction in the communication air duct.

[0042] The communication air duct includes an inner hole 15 arranged in the side wall of the cabinet 1, and a filter screen is arranged in the inlet end of the inner hole 15. The inner hole 15 is in communication with the third cavity, and one end of a channel 16 in the side wall of the cabinet 1 is in communication with the inner hole 15, and the other end of the channel 16 is in communication with the cavity between the filter plate 3 and the lower partition plate 2.

[0043] A sealing frame 14 is fixedly and sealingly arranged on the inner wall of the cabinet 1 outside the inlet end of the inner hole 15, the converter cabinet 8 is in sealing contact with the sealing frame 14, and the heat dissipation air outlet of the converter cabinet 8 is in corresponding communication with the internal space of the sealing frame 14. The hot air discharged from the heat dissipation air outlet of the converter cabinet 8 can enter the cavity between the filter plate 3 and the lower partition plate 2 through the inner hole 15 and the channel 16.

[0044] The control unit includes a through hole 17 arranged in the side wall of the cabinet 1, the through hole 17 is in communication with the outside of the cabinet 1 and the channel 16, a sliding groove is arranged in the side wall of the cabinet 1 below the through hole 17, the sliding groove is in communication with the through hole 17, a lower sealing plate 18 is sealingly and slidably connected in the sliding groove, an upper sealing plate 19 is fixedly arranged on the upper end of the lower sealing plate 18, and the upper sealing plate 19 can seal and block the through hole 17.

[0045] After the lower sealing plate 18 and the upper sealing plate 19 move towards the inside of the cabinet 1, the lower sealing plate 18 can block the channel 16, and the upper sealing plate 19 enters the channel 16 from the through hole 17. The air flowing into the channel 16 from the inner hole 15 is discharged to the outside of the cabinet 1 through the through hole 17.

[0046] After the lower sealing plate 18 and the upper sealing plate 19 move towards the outside of the cabinet 1, the upper sealing plate 19 can block the through hole 17, and the lower sealing plate 18 makes the channel 16 through. The air flowing into the channel 16 from the inner hole 15 enters the cavity between the filter plate 3 and the lower partition plate 2.

[0047] In this embodiment, when the external environment temperature of the cabinet 1 is low, the hot air in the converter cabinet 8 can enter the cavity between the filter plate 3 and the lower partition plate 2 through the inner hole 15 and the channel 16 after being discharged from the heat dissipation air outlet. Under the air distribution of the filter plate 3, the hot air can enter the cabinet 1 part below the filter plate 3, thereby increasing the temperature in the cabinet 1 part below the filter plate 3, and avoiding the work of the energy storage battery 10 in a low temperature environment.

[0048] The air entering into the box 1 part below the filter plate 3 can be discharged through the air hole 12, so that the hot air in the converter cabinet 8 can continuously enter into the box 1 part below the filter plate 3.

[0049] After the hot air in the converter cabinet 8 enters into the box 1 part below the filter plate 3, the air outside the box 1 enters into the third cavity and the converter cabinet 8 through the air permeable grating on the upper end of the box 1, so that the cold air outside the box 1 can cool the converter cabinet 8. Figure 5 and Figure 6 The dotted line in the figure 5 is the flow path of the hot air in the converter cabinet 8 when the ambient temperature outside the box 1 is low.

[0050] When the ambient temperature outside the box 1 is high, the lower sealing plate 18 and the upper sealing plate 19 move towards the inside of the box 1, the lower sealing plate 18 can block the channel 16, and the upper sealing plate 19 enters into the channel 16 from the through hole 17, so that the channel 16 is communicated with the through hole 17, and the air flowing into the channel 16 from the inner hole 15 is discharged to the outside of the box 1 through the through hole 17. Figure 3 and Figure 4 The dotted line in the figure 6 is the flow path of the hot air in the converter cabinet 8 when the ambient temperature outside the box 1 is high.

[0051] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A power distribution transformer energy storage device comprising a pry seat (11), the upper end of the pry seat (11) is fixed with a box (1), the upper end of the box (1) is provided with a breathable grille, characterized in that, The lower part of the box (1) is fixed with a lower partition plate (2), the part of the box (1) below the lower partition plate (2) is an energy storage cavity, the energy storage cavity is fixed with an energy storage battery (10), the box (1) above the lower partition plate (2) is fixed with a first partition plate (4) and a second partition plate (5), the first partition plate (4) and the second partition plate (5) divide the part of the box (1) above the lower partition plate (2) into a first cavity, a second cavity and a third cavity, a high-voltage interval (6) is installed in the first cavity, a transformer (7) is installed in the second cavity, a plurality of converter cabinets (8) are installed in the third cavity, an energy management system (13) is further arranged in the third cavity, the lower partition plate (2) parts in the first cavity and the second cavity are both installed with a wind pipe (9), the first cavity and the second cavity are both communicated with the part of the box (1) below the lower partition plate (2) through the wind pipe (9) therein, a wind hole (12) is arranged at the lower end of the box (1), a wind pipe (9) is arranged at one side of the part of the box (1) below the lower partition plate (2), a communication air duct is arranged in the side wall of the box (1) at one side of the converter cabinet (8), the heat dissipation air outlet of the converter cabinet (8) is communicated with the part of the box (1) below the lower partition plate (2) through the communication air duct, and a control unit for controlling the air flow direction in the communication air duct is arranged on the box (1).

2. The power distribution transformer energy storage device of claim 1, wherein, The box (1) below the lower partition plate (2) is fixed with a filter plate (3), the outlet end of the wind pipe (9) communicated with the first cavity and the second cavity is communicated with the cavity between the filter plate (3) and the lower partition plate (2), and the wind pipe (9) at one side of the part of the box (1) below the lower partition plate (2) is below the filter plate (3). The air outlet end of the communication air duct is communicated with the cavity between the filter plate (3) and the lower partition plate (2).

3. The power distribution transformer energy storage device of claim 1, wherein, A filter screen is installed in the wind hole (12).

4. The power distribution transformer energy storage device of claim 2, wherein, The communication air duct comprises an inner hole (15) arranged on the side wall of the box (1), the inner hole (15) is communicated with the third cavity, one end of the inner hole (15) is communicated with a channel (16) in the side wall of the box (1), and the other end of the channel (16) is communicated with the cavity between the filter plate (3) and the lower partition plate (2).

5. A power distribution transformer energy storage device according to claim 4, wherein, A sealing frame (14) is fixed and sealed on the inner wall of the box (1) outside the inlet end of the inner hole (15), the converter cabinet (8) is in sealing contact with the sealing frame (14), the heat dissipation air outlet of the converter cabinet (8) is correspondingly communicated with the inner space of the sealing frame (14), and the hot air discharged from the heat dissipation air outlet of the converter cabinet (8) can enter the cavity between the filter plate (3) and the lower partition plate (2) through the inner hole (15) and the channel (16).

6. A power distribution transformer energy storage device as claimed in claim 4, wherein, The control unit comprises a through hole (17) opened on the side wall of the box (1), the through hole (17) communicates the outside of the box (1) and the channel (16), a chute is opened on the side wall of the box (1) below the through hole (17), the chute communicates with the through hole (17), a lower sealing plate (18) is sealingly connected in the chute and slides, the upper end of the lower sealing plate (18) is fixed with an upper sealing plate (19), the upper sealing plate (19) can seal and block the through hole (17); after the lower sealing plate (18) and the upper sealing plate (19) move towards the inside of the box (1), the lower sealing plate (18) can block the channel (16), and the upper sealing plate (19) enters the channel (16) from the through hole (17), the air flowing into the channel (16) from the inner hole (15) is discharged to the outside of the box (1) through the through hole (17); after the lower sealing plate (18) and the upper sealing plate (19) move towards the outside of the box (1), the upper sealing plate (19) can block the through hole (17), and the lower sealing plate (18) makes the channel (16) through, the air flowing into the channel (16) from the inner hole (15) enters the cavity between the filter plate (3) and the lower partition plate (2).

7. A power distribution transformer energy storage device according to claim 6, wherein, A filter screen is installed in the inlet end of the inner hole (15).

8. The power distribution transformer energy storage device of claim 1, wherein, The air duct (9) comprises a cylinder body (901), a fan (902) is fixedly installed in the cylinder body (901), an inner rod (903) is fixedly installed in the cylinder body (901), a screw rod (904) concentric with the cylinder body (901) is threadedly connected to the inner rod (903), one end of the screw rod (904) extends to the outside of the cylinder body (901), a cover (905) is concentrically fixed on the part of the screw rod (904) on the outside of the cylinder body (901), rotating the screw rod (904) makes the cover (905) close to the cylinder body (901), and the cover (905) can block the end of the cylinder body (901) on one side.

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