Liquid cooling energy storage confluence cabinet

Abstract

The utility model relates to a liquid cooling energy storage confluence cabinet, which comprises a cabinet body, a main circuit breaker, confluence copper bars and branch circuit breakers are arranged in the cabinet body, the plurality of branch circuit breakers are vertically arranged on the front side and the rear side, the branch circuit breakers on the front side and the rear side are staggered in height, and a plurality of branch circuit breakers are vertically arranged on each side. Each branch circuit breaker is connected with the bus copper bar through each phase of branch circuit copper bar and is connected with the main circuit breaker through the bus copper bar, each phase of branch circuit copper bars corresponding to the branch circuit breakers on the front side and the rear side are arranged on the front side and the rear side of the bus copper bar respectively, and each phase of branch circuit copper bars of the branch circuit breakers on the front side and the rear side are staggered in height. According to the utility model, eight branch circuit breakers are arranged in the cabinet, parallel connection of eight energy storage integrated cabinets can be supported, four branch circuit breakers are arranged in front of and behind the cabinet, and branch copper bars are also arranged in front of and behind the cabinet, so that the height of the cabinet can be reduced, personnel operation is facilitated, the length of a bus copper bar can be reduced, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial and commercial energy storage, and particularly relates to a liquid-cooled energy storage busbar cabinet. Background Art

[0002] Industrial and commercial energy storage is a modern energy storage technology, aiming to provide a reliable and efficient energy reserve and supply system for the industrial and commercial fields. With the development of the global economy and the increase in energy consumption, industrial and commercial energy storage is gradually becoming an effective means to solve the problems of insufficient energy supply and energy volatility. With the continuous improvement of the technical level of the industrial and commercial energy storage industry, industrial and commercial energy storage products are also constantly updated. There are both large-scale containerized energy storage and smaller-sized liquid-cooled energy storage integrated cabinets, which can meet the industrial and commercial energy storage application scenarios of different scales and requirements.

[0003] However, the system capacity of the existing liquid-cooled energy storage integrated cabinet is about 261 kWh, and it usually operates in parallel in the form of 3 to 8 units, which can cover the energy storage application scenarios below 2 MWh. The energy storage integrated cabinet is connected to the power grid through a grid connection cabinet to achieve greater economic benefits. In some industrial and commercial energy storage application scenarios, the grid connection cabinets in the original power stations are used. These grid connection cabinets are limited in size and cannot support the parallel connection of multiple liquid-cooled energy storage integrated cabinets, and the transformation difficulty is relatively large. Therefore, it is very necessary to equip a busbar cabinet. The traditional busbar cabinet can support the parallel connection of up to 5 units at most. If it is in the case of 8 units in parallel, the height of the busbar cabinet body will be too high. Therefore, there is an urgent need to design a liquid-cooled energy storage busbar cabinet with reasonable layout, safety and reliability, and supporting the parallel connection of multiple energy storage integrated cabinets. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above deficiencies and provide a liquid-cooled energy storage busbar cabinet with reasonable layout, safety and reliability, which can support the parallel connection of 8 energy storage integrated cabinets. There are 4 branch circuit breakers in front and 4 in the back, and the branch circuit copper bars are also installed front and back. This can not only reduce the height of the cabinet, facilitate personnel operation, but also reduce the length of the busbar copper bars and save costs.

[0005] The purpose of the utility model is achieved as follows:

[0006] A liquid-cooled energy storage busbar cabinet includes a cabinet body. A main circuit breaker, busbar copper bars and branch circuit breakers are arranged in the cabinet body. Multiple branch circuit breakers are vertically arranged on the front and back sides, and the branch circuit breakers on the front and back sides are staggered in height. There are multiple branch circuit breakers vertically arranged on each side. Each branch circuit breaker is connected to the busbar copper bars through phase branch circuit copper bars and is connected to the main circuit breaker through the busbar copper bars. The phase branch circuit copper bars corresponding to the branch circuit breakers on the front and back sides are respectively arranged on the front and back sides of the busbar copper bars, and the phase branch circuit copper bars of the branch circuit breakers on the front and back sides are staggered in height.

[0007] Preferably, there are 8 branch circuit breakers, with 4 on each of the front and back sides.

[0008] Preferably, the phase sequence of the phase branch copper bars of the front-side branch circuit breaker from top to bottom is ABCN, and the phase sequence of the phase branch copper bars of the rear-side branch circuit breaker from top to bottom is NCBA. The lengths of the phase branch copper bars of the same branch circuit breaker are different.

[0009] Preferably, an auxiliary power supply circuit breaker is further provided in the cabinet. The auxiliary power supply circuit breaker is arranged below the front-side bottommost branch circuit breaker. The right side of the auxiliary power supply circuit breaker is connected to a busbar, and the left side is connected to an auxiliary power supply copper bar bracket through an auxiliary power supply copper bar. The auxiliary power supply copper bar bracket is fixed to the side beam.

[0010] Preferably, insulators are provided at one end of the auxiliary power supply copper bar close to the auxiliary power supply copper bar bracket. The heights of the insulators are different, so that the AC-phase auxiliary power supply copper bar and the BN-phase auxiliary power supply copper bar are staggered front and back.

[0011] Preferably, an insulating board is provided in the cabinet, and the phase copper bars corresponding to the branch circuit breaker and the auxiliary power supply circuit breaker are isolated in two insulating boards arranged front and back.

[0012] Preferably, an AC lightning arrester, a maintenance socket and an ammeter are further provided in the cabinet.

[0013] Preferably, a first installation beam, a second installation beam, a third installation beam and a fourth installation beam are provided in the cabinet from top to bottom. Each installation beam is fixed in the cabinet through a side beam. A branch circuit breaker installation board and a busbar are installed between the first installation beam and the second installation beam. The branch circuit breaker installation board is used to install the branch circuit breaker; a main circuit breaker installation board is installed between the third installation beam and the fourth installation beam. The main circuit breaker installation board is used to install the main circuit breaker.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Eight branch circuit breakers are arranged in the cabinet, which can support the parallel connection of 8 energy storage integrated cabinets. There are 4 branch circuit breakers in the front and 4 in the back, and the branch copper bars are also installed front and back. This can not only reduce the height of the cabinet, facilitate personnel operation, but also reduce the length of the busbar and save costs; in addition, when the number of energy storage integrated cabinets is less than 8, as long as the corresponding number of branch circuit breakers and branch copper bars at the back are removed, there is no need to design a new cabinet. Therefore, it is applicable to various energy storage application scenarios. Description of the Drawings

[0016] Figure 1 It is the front view (removing the cabinet door and the partition board) of a liquid-cooled energy storage busbar cabinet of the present utility model.

[0017] Figure 2 It is the rear view (removing the cabinet door and the partition board) of a liquid-cooled energy storage busbar cabinet of the present utility model.

[0018] Figure 3 This is a top view (removing the top cover) of a liquid-cooled energy storage busbar cabinet of the present utility model.

[0019] Figure 4 This is a schematic three-dimensional structure diagram (removing the cabinet door) of the present utility model.

[0020] Figure 5 is Figure 4 a partial enlarged view of.

[0021] Wherein:

[0022] Cabinet body 1; main circuit breaker 2; busbar copper row 3; branch circuit breaker 4; branch copper row 5; branch circuit breaker mounting plate 6; main circuit breaker mounting plate 7; auxiliary power supply circuit breaker 8; auxiliary power supply copper row 9; auxiliary power supply copper row support 10; insulator 11; insulating plate 12; AC lightning arrester 13; maintenance socket 14; ammeter 15. Specific embodiments

[0023] Referring to Figures 1-5 , the present utility model relates to a liquid-cooled energy storage busbar cabinet, including a cabinet body 1, wherein a main circuit breaker 2, a busbar copper row 3 and branch circuit breakers 4 are arranged in the cabinet body 1. A plurality of branch circuit breakers 4 are arranged vertically on the front and rear sides, and the branch circuit breakers 4 on the front and rear sides are staggered in height. A plurality of branch circuit breakers 4 are arranged vertically on each side. Each branch circuit breaker 4 is connected to the busbar copper row 3 through each phase branch copper row 5 and is connected to the main circuit breaker 2 through the busbar copper row 3. The branch copper rows 5 of each phase corresponding to the branch circuit breakers 4 on the front and rear sides are respectively arranged on the front and rear sides of the busbar copper row 3. The phase sequence of the branch copper rows 5 of each phase of the branch circuit breakers 4 on the front side from top to bottom is ABCN, and the phase sequence of the branch copper rows 5 of each phase of the branch circuit breakers 4 on the rear side from top to bottom is NCBA. The lengths of the branch copper rows 5 of each phase of the same branch circuit breaker 4 are different, and the branch copper rows 5 of each phase on the front and rear sides are staggered in height and do not interfere with each other.

[0024] A first mounting beam, a second mounting beam, a third mounting beam and a fourth mounting beam are arranged in the cabinet body 1 from top to bottom. Each mounting beam is fixed in the cabinet body 1 through side beams. A branch circuit breaker mounting plate 6 and a busbar copper row 3 are installed between the first mounting beam and the second mounting beam. The branch circuit breaker mounting plate 6 is used for installing the branch circuit breaker 4.

[0025] A main circuit breaker mounting plate 7 is installed between the third mounting beam and the fourth mounting beam. The main circuit breaker mounting plate 7 is used for installing the main circuit breaker 2.

[0026] An auxiliary power supply circuit breaker 8 is also provided inside the cabinet body 1. The auxiliary power supply circuit breaker 8 is arranged below the branch circuit breaker 4 at the front bottom. The right side of the auxiliary power supply circuit breaker 8 is connected to a busbar copper row 3, and the wiring phase sequence is the same as that of the branch circuit breaker 4 on the front side. The left side is connected to an auxiliary power supply copper row bracket 10 through an auxiliary power supply copper row 9. The auxiliary power supply copper row bracket 10 is fixed to the side beam. One end of the auxiliary power supply copper row 9 close to the auxiliary power supply copper row bracket 10 is equipped with an insulator 11. The heights of the insulators 11 are different, so that the AC-phase auxiliary power supply copper row and the BN-phase auxiliary power supply copper row are staggered front and back, facilitating wiring.

[0027] There are 8 branch circuit breakers 4, with 4 arranged on each of the front and back sides.

[0028] An insulating board 12 is provided inside the cabinet body 1. The copper bars of each phase corresponding to the branch circuit breaker 4 and the auxiliary power supply circuit breaker 8 are isolated within two insulating boards 12 arranged front and back, preventing contact with live objects such as copper bars when operating the circuit breaker and ensuring personal safety. The isolation board 12 is fixed to the side beam and is firmly installed.

[0029] The cabinet door of the cabinet body is equipped with a cooling fan, which can effectively discharge the heat generated during the operation of the copper bar.

[0030] An AC lightning arrester 13 is provided inside the cabinet body 1. When an overvoltage occurs in the power grid power supply system, it can provide a protection mechanism to prevent electrical equipment from being damaged.

[0031] The AC lightning arrester 13 is installed on the fourth installation beam. A maintenance socket 14 is also provided on the fourth installation beam, which can provide power to the debugging personnel. An ammeter 15 is provided on the third installation beam.

[0032] In addition to the above embodiments, the present utility model also includes other implementation manners. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present utility model.

Claims

1. A liquid-cooled energy storage combiner cabinet, characterized in that: The invention comprises a cabinet body, wherein a main circuit breaker, a busbar and a branch circuit breaker are arranged in the cabinet body, a plurality of branch circuit breakers are arranged vertically on the front and rear sides, the branch circuit breakers on the front and rear sides are staggered in height, a plurality of branch circuit breakers are arranged vertically on each side, each branch circuit breaker is connected to the busbar through the branch copper bars of each phase, and is connected to the main circuit breaker through the busbar, the branch copper bars of each phase corresponding to the branch circuit breakers on the front and rear sides are respectively arranged on the front and rear sides of the busbar, and the branch copper bars of each phase of the branch circuit breakers on the front and rear sides are staggered in height.

2. The liquid-cooled energy storage combiner cabinet according to claim 1, characterized in that: There are 8 branch circuit breakers, 4 on the front and rear sides respectively.

3. The liquid-cooled energy storage combiner cabinet according to claim 1, characterized in that: The phase sequence of the copper bars of each phase branch of the front branch circuit breaker from top to bottom is ABCN, and the phase sequence of the copper bars of each phase branch of the rear branch circuit breaker from top to bottom is NCBA. The lengths of the copper bars of each phase branch of the same branch circuit breaker are different.

4. The liquid-cooled energy storage combiner cabinet according to claim 1, characterized in that: An auxiliary power supply circuit breaker is also provided in the cabinet, and the auxiliary power supply circuit breaker is arranged below the branch circuit breaker at the bottom of the front side. The right side of the auxiliary power supply circuit breaker is connected to the busbar, and the left side is connected to the auxiliary power supply copper bar bracket through the auxiliary power supply copper bar, and the auxiliary power supply copper bar bracket is fixed to the side beam.

5. The liquid-cooled energy storage combiner cabinet according to claim 4, characterized in that: The auxiliary power supply copper bar is provided with an insulator at one end close to the auxiliary power supply copper bar bracket, and the insulators have different heights, so that the AC phase auxiliary power supply copper bar and the BN phase auxiliary power supply copper bar are staggered front and back.

6. The liquid-cooled energy storage combiner cabinet according to claim 4, characterized in that: An insulating plate is arranged in the cabinet, and copper bars of each phase corresponding to the branch circuit breaker and the auxiliary power supply circuit breaker are isolated in two insulating plates arranged at the front and the back.

7. The liquid-cooled energy storage combiner cabinet according to claim 1, characterized in that: The cabinet is also provided with an AC lightning arrester, a maintenance socket and an electric meter.

8. The liquid-cooled energy storage combiner cabinet according to claim 1, characterized in that: The cabinet body is provided with a first mounting beam, a second mounting beam, a third mounting beam and a fourth mounting beam from top to bottom, and each mounting beam is fixed in the cabinet body through a side beam. A branch circuit breaker mounting plate and a busbar are installed between the first mounting beam and the second mounting beam, and the branch circuit breaker mounting plate is used to install the branch circuit breaker; a main circuit breaker mounting plate is installed between the third mounting beam and the fourth mounting beam, and the main circuit breaker mounting plate is used to install the main circuit breaker.

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