Station building type energy storage power station

Abstract

The utility model discloses a station building type energy storage power station, which comprises an automation chamber, energy storage converter chambers and battery chambers, the energy storage converter chambers and the battery chambers are sequentially arranged on the left side and the right side of the automation chamber, battery racks are mounted in the battery chambers, battery clusters are arranged on the battery racks side by side, and each battery cluster comprises a plurality of single battery packs which are sequentially connected from bottom to top. An energy storage converter PCS and a confluence cabinet are installed in the energy storage conversion chamber, a battery management system BMS and a frame-type circuit breaker are arranged in the confluence cabinet, each battery cluster is connected with the direct current side of the PCS through the frame-type circuit breaker in the confluence cabinet and connected with a communication interface of the PCS through the BMS in the confluence cabinet, a secondary cabinet is arranged in the automation chamber, and a battery pack is arranged in the secondary cabinet. An energy management system (EMS) is installed in the secondary cabinet, and the EMS is connected with the BMS and the PCS through signal lines. According to the utility model, through the measures of functional area separation, efficient communication management, multiple safety protection, energy conversion efficiency improvement, intelligent energy management and the like, the operation and maintenance efficiency, the safety and the energy utilization efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical energy storage technology, and more specifically, it is a station-type energy storage power station. Background Technology

[0002] Existing energy storage power stations still have significant shortcomings in operation and maintenance management, spatial layout, scalability, electrical connection, communication coordination, safety protection, energy conversion, and intelligent control: The ambiguous functional zoning of some energy storage power stations leads to low inspection and maintenance efficiency, and mutual interference between equipment increases the difficulty of troubleshooting; asymmetrical layout design wastes space resources, and equipment expansion requires a complete redesign of the overall structure; traditional electrical connection methods lack dynamic protection mechanisms, making them susceptible to overcurrent and short circuits that can cause equipment damage; isolated communication systems result in delayed data interaction, making it impossible to achieve real-time coordinated control of battery status and converter operation; limited monitoring methods make it difficult to provide timely warnings of abnormal states such as overcharging and over-discharging, and the lack of multiple safety protection systems increases the risk of fire and explosion; high loss rates in the energy conversion process and the lack of intelligent scheduling strategies make it difficult to dynamically optimize charging and discharging efficiency based on grid load; management systems rely on manual intervention and cannot autonomously adapt to grid fluctuations and changes in user demand, resulting in a structural mismatch between energy allocation and grid operation. Utility Model Content

[0003] To address existing technical problems, this utility model innovatively provides a station-type energy storage power station, which improves operation and maintenance efficiency, safety, and energy utilization efficiency through measures such as functional area separation, optimized spatial layout, convenient expansion, reliable electrical connection, efficient communication management, accurate battery monitoring, multiple safety protections, improved energy conversion efficiency, and intelligent energy management.

[0004] To achieve the aforementioned technical objectives, this utility model discloses a station-type energy storage power station, comprising an automation room, an energy storage converter room, and a battery room. The energy storage converter room and battery room are sequentially located on the left and right sides of the automation room. A battery rack is installed in the battery room, and battery clusters are arranged side-by-side on the rack. Each battery cluster includes multiple individual battery packs connected sequentially from bottom to top. An energy storage converter (PCS) and a combiner cabinet are installed in the energy storage converter room. The combiner cabinet contains a battery management system (BMS) and a frame-type circuit breaker. Each battery cluster is connected to the DC side of the PCS via the frame-type circuit breaker in the combiner cabinet. Each battery cluster is also connected to the PCS via a communication interface between the BMS and the PCS in the combiner cabinet. A secondary cabinet is located in the automation room, and an energy management system (EMS) is installed in the secondary cabinet. The EMS is connected to both the BMS and the PCS via signal lines.

[0005] Furthermore, the present invention provides a station-type energy storage power station, which further includes a liquid cooling system room, wherein a liquid cooling unit is installed in the liquid cooling system room, the liquid cooling unit includes liquid cooling pipelines, and the liquid cooling pipelines are laid around the battery rack to each individual battery pack.

[0006] Furthermore, this utility model discloses a station-type energy storage power station, wherein multiple combiner cabinets are configured, and the multiple combiner cabinets are installed in a row in the energy storage converter room. A power box is provided on one side of the first combiner cabinet and the last combiner cabinet. The power box is used to supply power to the energy storage unit of the frame circuit breaker in the combiner cabinet.

[0007] Furthermore, in this utility model, a station-type energy storage power station is provided, wherein each of the combiner cabinets has a frame-type circuit breaker and a BMS connected to one or more battery clusters on the battery rack.

[0008] Furthermore, in this utility model, a station-type energy storage power station is provided, wherein the energy storage converter room is also provided with a high-voltage cable well, which is used to lay cables connected to the AC output terminal of the PCS for connection with external charging equipment.

[0009] Furthermore, this utility model provides a station-type energy storage power station, wherein the PCS is a string PCS, and the string PCS integrates multiple small PCS, and the multiple small PCS are connected to multiple combiner cabinets in a one-to-one correspondence.

[0010] Furthermore, in this utility model, a station-type energy storage power station is provided, wherein a cable tray is laid above the battery rack, the battery cluster is connected to the input terminal of the frame-type circuit breaker in the combiner cabinet via a DC cable, and the battery cluster is connected to the BCS in the combiner cabinet via a signal line. Both the DC cable and the signal line are routed through the cable tray.

[0011] Furthermore, in this utility model, a station-type energy storage power station is provided, wherein the energy storage converter room is equipped with roller shutter doors on both the front and rear sides.

[0012] Furthermore, in this utility model, a station-type energy storage power station is provided, wherein the wall of the automation room is provided with an observation window.

[0013] Furthermore, in this utility model, a station-type energy storage power station is provided, wherein the automation room is also equipped with a power distribution cabinet, which is used to supply power to the electrical equipment in the automation room, liquid cooling system room, energy storage converter room and battery room.

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

[0015] 1. The automation room, energy storage converter room and battery room are set up separately, with clear functional areas, which facilitates staff to carry out daily inspections, maintenance and troubleshooting;

[0016] 2. The energy storage converter room and battery room are symmetrically arranged on the left and right sides of the automation room. This layout can make full use of the space, making the structure of the entire station-type energy storage power station more compact and reasonable, reducing construction costs and land area.

[0017] 3. The layout of this utility model energy storage power station facilitates expansion, and it can be expanded relatively easily on the basis of the existing layout without causing major changes and impacts on the overall system.

[0018] 4. The connection method of the battery cluster to the PCS through the frame circuit breaker can ensure that the electrical connection between the battery cluster and the PCS is stable and reliable. The frame circuit breaker can quickly cut off the circuit in the event of overcurrent, short circuit and other faults, thereby improving the safety and stability of the energy storage power station.

[0019] 5. By setting up PCS, BMS, and EMS, the status of battery clusters and the operating status of energy storage converters can be monitored and managed in real time, thereby achieving precise control and optimized scheduling of energy storage power stations and improving the operating efficiency and performance of energy storage systems. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the plan structure of a station-type energy storage power station according to the present invention. Detailed Implementation

[0021] The following is a detailed explanation and description of a station-type energy storage power station according to the present invention, with reference to the accompanying drawings.

[0022] like Figure 1 As shown, this utility model discloses a station-type energy storage power station, including an automation room 1, a liquid cooling system room 4, an energy storage converter room 2, and a battery room 3.

[0023] The automation room 1 and the liquid cooling system room 4 are arranged close together. The energy storage converter room 2 and the battery room 3 are arranged in sequence on the left side of the automation room 1. Similarly, the energy storage converter room 2 and the battery room 3 are arranged in sequence on the right side of the automation room 1, forming a symmetrical distribution.

[0024] A battery rack 31 is installed in the battery compartment 3. Battery clusters 32 are arranged side by side on the battery rack 31. Each battery cluster 32 includes multiple individual battery packs connected sequentially from bottom to top. A cable tray 33 is laid above the battery rack 31. DC cables and signal lines are connected to the battery clusters 32. Both DC cables and signal lines are laid in the cable tray 33.

[0025] The energy storage converter 2 houses the energy storage converter PCS21, combiner cabinet 22, and power box 23. A high-voltage cable well 24 is also excavated within the energy storage converter 2. Roller shutters 25 are installed on both the front and rear sides of the energy storage converter 2. When the roller shutters 25 are rolled up, the energy storage converter 2 is open from front to back. During normal operation, the roller shutters 25 are rolled up to ensure communication between the energy storage converter 2 and the outside environment, meeting the heat dissipation requirements of the PCS21. The combiner cabinet 22 houses the battery management system (BMS) and a frame-type circuit breaker. The DC cables on the battery clusters 32 are connected to the input terminal of the frame-type circuit breaker within the combiner cabinet 22. The output terminal of the frame-type circuit breaker is connected to the DC side of the PCS21. The cable connected to the AC output terminal of the PCS21 is connected to external charging equipment via the high-voltage cable well 24. Multiple PCS21s can be installed as needed. Figure 1 Two PCS21s are configured, and the cables connected to the AC output terminals of these two PCS21s are connected to the external charging equipment through the same high-voltage cable well 24. The signal lines of the DC cables on the battery clusters 32 are connected to the communication interfaces of the BMS and PCS21 in the combiner cabinet 22, and the BMS is also connected to the PCS21. Multiple combiner cabinets 22 are configured, and each combiner cabinet 22 can connect one or more battery clusters 32 in the manner described above. The multiple combiner cabinets 22 are arranged in a row, and one power box 23 is set on one side of the first combiner cabinet 22 and the last combiner cabinet 22, respectively. The power box 23 supplies power to the energy storage units of the frame circuit breakers in all combiner cabinets 22. The PCS21 adopts a string PCS21, which integrates multiple small PCS, and each small PCS is connected to one combiner cabinet 22.

[0026] The automation room 1 houses a secondary cabinet 11 and a power distribution cabinet 13. The secondary cabinet 11 contains an energy management system (EMS), which is connected to the BMS and PCS 21 via signal lines to form a communication link. The power distribution cabinet 13 draws power from sources outside the energy storage power station (such as mains power or the site power supply) and supplies power to the equipment (such as lighting systems) in the automation room 1, liquid cooling system room 4, energy storage converter room 2, and battery room 3. The automation room 1 also includes a large monitoring screen and a control panel for maintenance personnel to monitor operations and perform emergency maintenance. Observation windows 12 are installed on the walls of the automation room 1, facing the monitoring screen, allowing observation of the interior of the automation room 1 from the outside.

[0027] The liquid cooling system room 4 is equipped with a liquid cooling unit 41 and its supporting equipment such as water pumps and water tanks. The liquid cooling unit 41 is connected to liquid cooling pipes, which are laid around the battery rack 31 to each individual battery pack to meet the temperature control requirements of each individual battery pack in the energy storage power station.

[0028] To ensure the energy storage power station has comprehensive protection functions, the battery compartment 3 can integrate necessary fire detection and alarm systems and gas extinguishing systems. The fire detection and alarm system can promptly detect abnormal situations within the energy storage power station and automatically activate the gas extinguishing system. The fire detection and alarm system and the gas extinguishing system can be powered through the distribution cabinet 13.

[0029] The walls of the automation room 1, liquid cooling system room 4, energy storage converter room 2 and battery room 3 can be assembled by sandwich panel decorative wall panels, which include two layers of thin steel plates and a support column located between the two layers of thin steel plates, and the outer surfaces of the inner and outer thin steel plates are coated with anti-corrosion paint.

[0030] The operating principle of this utility model is as follows:

[0031] The battery cluster 32 in battery compartment 3 is the energy storage unit of the energy storage power station, which is composed of multiple individual battery packs connected in series and parallel. The battery cluster 32 collects the actual electrical parameters such as voltage, current and temperature of the battery cluster 32 through the BMS to estimate the remaining power or health status of the battery cluster 32. The BMS controls the liquid cooling unit 41 to maintain the battery cluster 32 at a suitable temperature range (such as 25℃-40℃) according to the temperature change of the battery cluster 32. One or more battery clusters 32 are connected and disconnected from PCS21 through the frame circuit breaker in the return cabinet to realize the collection and distribution of battery clusters 32. On the one hand, the EMS collects the status information of battery cluster 32, the operating data of PCS21 and the operating status information of combiner cabinet 22 from the BMS; on the other hand, it formulates energy dispatch strategies based on external factors such as grid load and electricity price. The EMS sends battery operating parameter settings to the BMS and issues commands such as power output and charge / discharge start / stop to the PCS21. The PCS21 completes bidirectional DC-AC conversion according to the control commands issued by the EMS to meet the charging or power supply needs of the battery cluster 32, thereby achieving optimized configuration and efficient utilization of energy in the energy storage power station.

[0032] This utility model has the following advantages:

[0033] 1. The automation room 1, energy storage converter room 2 and battery room 3 are set up separately, with clear functional areas, which facilitates daily inspection, maintenance and troubleshooting by staff. Maintenance personnel can more efficiently locate and handle problems in each functional area, reduce mutual interference between different devices and improve maintenance efficiency and safety.

[0034] 2. The energy storage converter room 2 and the battery room 3 are symmetrically arranged on the left and right sides of the automation room 1. This layout can make full use of the space, making the structure of the entire station-type energy storage power station more compact and reasonable, reducing construction costs and land area.

[0035] 3. The layout of the energy storage power station facilitates expansion. When it is necessary to increase the energy storage capacity or expand the functions, it is relatively easy to expand on the basis of the existing layout. For example, add battery racks 31 and battery clusters 32 to battery room 3, and add energy storage converters and other equipment to energy storage converter room 2, without causing major changes and impacts on the overall system.

[0036] 4. Each battery cluster 32 is connected to the DC side of PCS21 through a frame-type circuit breaker in combiner cabinet 22. This connection method can ensure that the electrical connection between battery cluster 32 and energy storage converter is stable and reliable. The frame-type circuit breaker can quickly cut off the circuit in case of overcurrent, short circuit and other faults, protect battery cluster 32 and energy storage converter and other equipment from damage, and improve the safety and stability of energy storage power station.

[0037] 5. Each battery cluster 32 is connected to the BMS and PCS21 via the communication interface within the combiner cabinet 22. Simultaneously, the EMS is connected to both the BMS and PCS21 via signal lines, forming a complete communication link. This enables the energy management system (EMS) to monitor and manage the status of the battery clusters 32 in real time, including parameters such as voltage, current, and temperature, as well as the operating status of the energy storage converter PCS21. This allows for precise control and optimized scheduling of the energy storage power station, improving the operating efficiency and performance of the energy storage system.

[0038] 6. The Battery Management System (BMS) monitors and manages each battery cluster 32 in real time, which can promptly detect abnormalities in the battery pack, such as overcharging, over-discharging, and overheating, and take corresponding protective measures to prevent battery failures from causing safety accidents, extend battery life, and improve the reliability and safety of the entire energy storage power station.

[0039] 7. The frame-type circuit breaker plays a role in short-circuit and overload protection in the circuit. Combined with the overcharge and over-discharge protection functions of the battery management system (BMS), it forms a multi-layer safety protection mechanism, which can more comprehensively ensure the safe operation of the energy storage power station and reduce the risk of serious accidents such as fires and explosions caused by electrical faults.

[0040] 8. The energy storage converter PCS21 completes the bidirectional conversion between DC and AC for the battery cluster 32, enabling connection and energy exchange with the power grid or other charging and power consumption equipment. Through reasonable connection and control, the energy conversion process can be optimized, energy conversion efficiency can be improved, energy loss can be reduced, and the energy storage power station can store and release electrical energy more effectively, thereby improving energy utilization efficiency.

[0041] 9. The Energy Management System (EMS) communicates with the BMS and PCS21 to achieve intelligent energy management of the energy storage power station based on factors such as grid demand, battery status, and user settings. For example, it can rationally arrange battery charging and discharging time and power according to grid load conditions, improve grid stability and reliability, and better meet users' electricity needs, thereby achieving optimized energy allocation.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and simple improvements made on the substantive content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A station building type energy storage power plant, characterized by: The energy storage system comprises an automation room, an energy storage and conversion room and a battery room, the left and right sides of the automation room are sequentially provided with the energy storage and conversion room and the battery room, a battery rack is installed in the battery room, a plurality of battery clusters are arranged side by side on the battery rack, each battery cluster comprises a plurality of single battery packs connected in sequence from bottom to top, an energy storage and conversion device (PCS) and a busbar cabinet are installed in the energy storage and conversion room, a battery management system (BMS) and a frame circuit breaker are arranged in the busbar cabinet, each battery cluster is connected with the direct current side of the PCS through the frame circuit breaker in the busbar cabinet, and each battery cluster is connected with the communication interface of the PCS through the BMS in the busbar cabinet, a secondary cabinet is arranged in the automation room, an energy management system (EMS) is installed in the secondary cabinet, and the EMS is connected with the BMS and the PCS through signal lines.

2. A station building type energy storage power plant according to claim 1, characterized in that The energy storage system further comprises a liquid cooling system room, a liquid cooling unit is installed in the liquid cooling system room, and the liquid cooling unit comprises a liquid cooling pipeline which is arranged around the battery rack and extends to each single battery pack.

3. A station building energy storage power plant according to claim 2, characterized in that The busbar cabinet is provided in plurality, and the plurality of busbar cabinets are arranged in the energy storage and conversion room in a row, one side of the first busbar cabinet and the last busbar cabinet is provided with a power box, and the power box is used for supplying power to the energy storage unit of the frame circuit breaker in the busbar cabinet.

4. A station building energy storage power plant according to claim 3, characterized in that The frame circuit breaker and the BMS in each busbar cabinet are connected with one or more battery clusters on the battery rack.

5. A station building energy storage power plant according to claim 4, characterized in that The energy storage and conversion room is further provided with a high-voltage cable well, and the high-voltage cable well is used for laying cables connected to the alternating current output end of the PCS so as to be connected with external charging and power supply equipment.

6. A station building energy storage power plant according to claim 5, characterized in that The PCS is a group string type PCS, and a plurality of small PCSs are integrated in the group string type PCS, and the plurality of small PCSs are connected with the plurality of busbar cabinets one by one.

7. A station building energy storage power plant according to claim 6, characterized in that A cable bridge is arranged above the battery rack, the battery cluster is connected with the input end of the frame circuit breaker in the busbar cabinet through a direct current cable, and the battery cluster is connected with the BCS in the busbar cabinet through a signal line, and the direct current cable and the signal line are arranged through the cable bridge.

8. A station building energy storage power plant according to claim 7, characterized in that Roller shutter doors are arranged on the front and back sides of the energy storage and conversion room.

9. A station building energy storage power plant according to claim 8, characterized in that An observation window is arranged on the wall of the automation room.

10. A station building energy storage power plant according to claim 9, characterized in that A power distribution cabinet is further arranged in the automation room, and the power distribution cabinet is used for supplying power to the electrical equipment in the automation room, the liquid cooling system room, the energy storage and conversion room and the battery room.

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