Modularized lithium ion battery energy storage cabin

Abstract

The utility model relates to the technical field of energy storage, in particular to a modularized lithium ion battery energy storage cabin which comprises a cabin body, a battery chamber and an equipment chamber are arranged in the cabin body, a partition plate is arranged between the battery chamber and the equipment chamber, and the battery chamber comprises a plurality of battery racks distributed in the length direction of the cabin body. Two groups of battery clusters can be placed on each battery rack along the height direction of the cabin body, each group of battery clusters comprises a plurality of battery modules, and all the battery clusters are equally divided into two sets of battery stacks; a high-voltage box guide rail for mounting a high-voltage box is arranged below each battery rack, and a high-voltage box cover plate is arranged between the battery rack and the high-voltage box guide rail of the high-voltage box; the equipment chamber is located on one side of the cabin body in the length direction, the side, located on the cabin body in the length direction, of the equipment chamber is open, and the equipment chamber is divided into a liquid cooling chamber and an electrical chamber in the width direction of the cabin body. The modular design of one rack with two clusters and one cabin with two stacks is adopted, the spatial layout is reasonable, and the expansibility, compatibility and environmental applicability are high.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, specifically to a modular lithium-ion battery energy storage compartment. Background Technology

[0002] Energy storage technology creates commercial value through its proactive ability to balance generation and consumption across time periods and seasons, alleviating the burden of passive regulation on the power grid and becoming a key factor in supporting the stable and large-scale development of renewable energy. Renewable energy sources such as wind and solar power all require a certain proportion of energy storage systems to facilitate the rational and convenient use of energy. Currently, energy storage systems include electrochemical energy storage, represented by lithium-ion batteries.

[0003] A lithium-ion battery energy storage compartment is an energy storage system that integrates lithium-ion battery packs and related supporting equipment into a single compartment. The battery pack is the core component, and the supporting equipment typically includes a battery management system (BMS), an energy storage converter, an energy management system, and other auxiliary equipment such as distribution cabinets, fire protection systems, temperature control systems, and ventilation systems. The BMS monitors battery parameters such as voltage, current, temperature, and state of charge in real time, controlling and protecting the batteries from overcharging, over-discharging, and overheating, thus extending battery life and ensuring the safety and performance of the battery pack. The energy storage converter enables bidirectional conversion between direct current (DC) and alternating current (AC). During charging, it converts AC power from the grid or other power sources into DC power to charge the batteries; during discharging, it converts the DC power from the batteries back into AC power to supply the grid or load. It also regulates and controls the frequency, phase, and voltage of the electrical energy. The energy management system monitors and manages the overall operation of the energy storage compartment, developing reasonable charging and discharging strategies based on grid demand, battery status, and load conditions. This optimizes the operating efficiency and economy of the energy storage system and enables coordinated control of all equipment within the compartment. The power distribution cabinet is used to distribute and control electrical energy; the fire protection system ensures the fire safety of the energy storage compartment; the temperature control system and ventilation system ensure that the lithium-ion batteries and other equipment operate in a suitable temperature and humidity environment.

[0004] With the increasing demand for electricity, some lithium-ion battery energy storage compartments currently suffer from unreasonable spatial layout, making it difficult to fully utilize the space inside the compartment to improve energy density. Furthermore, the installation efficiency of battery packs and related supporting equipment is low, and the flexibility of equipment deployment is limited. Utility Model Content

[0005] To address the technical problems of current lithium-ion battery energy storage compartments, such as unreasonable spatial layout, difficulty in fully utilizing the space to improve energy density, low installation efficiency of battery packs and related supporting equipment, and low flexibility in equipment deployment, this utility model provides a modular lithium-ion battery energy storage compartment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A modular lithium-ion battery energy storage compartment includes a compartment body, within which are a battery compartment and an equipment compartment, separated by a partition. The battery compartment includes several battery racks distributed along the length of the compartment body. Each battery rack can hold two sets of battery clusters along the height of the compartment body. Each battery cluster includes several battery modules, and all battery clusters are evenly distributed to form two battery stacks. Each battery rack has a high-voltage box rail for mounting a high-voltage box below it, and a high-voltage box cover is provided between the battery rack and the high-voltage box rail. The equipment compartment is located on one side of the compartment body along its length and is open. The equipment compartment is divided into a liquid-cooling compartment and an electrical compartment along the width of the compartment body. The liquid-cooling compartment houses the liquid-cooling unit, and the electrical compartment houses the combined current control cabinet. The electrical compartment has a mounting bracket on the side of the compartment body away from the liquid-cooling compartment, for mounting a fire alarm control panel.

[0008] This application adopts a modular design, dividing the cabin into a battery compartment and an equipment compartment, separated by partitions. This achieves a rational division of functional areas, facilitating separate management and maintenance of batteries and equipment. The battery compartment features several battery racks distributed along the length of the cabin, employing a modular design of "one rack, two clusters; one cabin, two stacks." Each battery rack can hold two sets of battery clusters along its height, with each cluster comprising multiple battery modules. All battery clusters are evenly distributed to form two sets of battery stacks. A high-voltage box rail is installed below each battery rack for mounting a high-voltage box, and a high-voltage box cover is provided between the battery rack and the high-voltage box rail. Each high-voltage box can control the two sets of battery clusters on the corresponding battery rack above. This design not only fully utilizes the cabin space and increases battery density, thus improving energy density, but also reduces the amount of DC and communication wiring harnesses and liquid cooling pipes, lowering design costs. Furthermore, it allows for flexible grouping with various specifications of energy storage converters, reducing design redundancy and improving scalability, compatibility, and environmental adaptability. It also enables rapid equipment installation and flexible deployment. The layout of placing the high-voltage box below the battery rack makes efficient use of the space beneath the rack, while the high-voltage box cover provides some protection and ensures safety. The equipment room is located on one side of the cabin's length and is open on one side, facilitating equipment installation and maintenance. Along the cabin's width, the equipment room is divided into a liquid cooling room and an electrical room, housing the liquid cooling unit and the integrated control cabinet respectively, achieving categorized placement of equipment and improving the rationality of the equipment layout. A mounting rack is installed in the electrical room, away from the liquid cooling room, for installing the fire alarm control unit, making efficient use of space and facilitating fire control of the entire energy storage cabin.

[0009] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the compartment is equipped with liquid cooling pipelines. The liquid cooling pipelines are divided into primary, secondary and tertiary pipelines. The primary pipelines are connected to the liquid cooling unit and located at the bottom of the compartment. The secondary pipelines are several branches of the primary pipelines and are distributed on both sides of the battery rack. The tertiary pipelines are several branches of the secondary pipelines. Each battery module has a liquid cooling base plate at its bottom, and the tertiary pipelines are connected to the liquid cooling base plate.

[0010] The liquid cooling pipeline of this application adopts an integrated three-stage design, with the pipeline divided into primary, secondary, and tertiary stages. This tiered design allows for more precise cooling of the battery modules, improving cooling efficiency and effectiveness. The primary stage pipeline connects to the liquid cooling unit and is located at the bottom of the compartment, facilitating connection and coolant delivery. Its bottom location also allows for better utilization of the compartment space. The secondary stage pipeline, as a branch of the primary stage pipeline, is distributed on both sides of the battery rack, ensuring more even distribution of coolant to the vicinity of the battery rack and guaranteeing uniform cooling of the battery modules. The tertiary stage pipeline, a branch of the secondary stage pipeline, has a liquid cooling base plate at the bottom of each battery module connected to the tertiary stage pipeline, achieving precise cooling of each battery module and further improving the cooling effect. This contributes to the stable operation and extended lifespan of the battery modules. The integrated three-stage design of the liquid cooling pipeline in this application ensures consistent liquid supply pressure and uniform coolant flow in the inlet and outlet circuits of each battery cluster, improving heat dissipation consistency.

[0011] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the fire control panel is electrically connected to the detector, which is located above the battery rack; the fire control panel is electrically connected to the exhaust fan and the air inlet louvers, which are located on the same side of the compartment, with the exhaust fan located at the top side of the compartment and the air inlet louvers located at the bottom side of the compartment, and the exhaust fan and air inlet louvers are staggered along the length of the compartment; the fire control panel is electrically connected to the "Do Not Enter" venting indicator light and several aerosol extinguishing devices, with the "Do Not Enter" venting indicator light located above the fire control panel and the several aerosol extinguishing devices located above the battery rack and arranged along the length of the compartment.

[0012] The fire alarm control panel of this application is electrically connected to a detector located above the battery rack, enabling timely monitoring of abnormal conditions in the battery rack area, such as fire hazards, thus providing a basis for fire early warning. The fire alarm control panel is electrically connected to the exhaust fan and air inlet louvers, which are located at the bottom of the same side but staggered. By controlling the operation of the exhaust fan and air inlet louvers, ventilation and air exchange in the battery compartment can be achieved, regulating the indoor air environment, and simultaneously expelling smoke and other harmful gases in the event of a fire. The fire alarm control panel is electrically connected to a "Do Not Enter" indicator light and several aerosol fire extinguishing devices. The "Do Not Enter" indicator light is located above the fire alarm control panel, and the several aerosol fire extinguishing devices are located above the battery rack and arranged along the length of the compartment. In the event of a fire, they can promptly issue an alarm and activate the fire extinguishing devices to extinguish the fire, improving the fire safety performance of the energy storage compartment.

[0013] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the detectors include a carbon monoxide detector, a hydrogen detector, a smoke detector, and a temperature detector, with several of each type arranged along the length of the compartment.

[0014] The detectors in this application include carbon monoxide detectors, hydrogen detectors, smoke detectors, and temperature detectors, with several of each type arranged along the length of the cabin. The multiple types of detectors can more comprehensively monitor various abnormalities in the battery rack area, such as gas leaks, smoke in the early stages of a fire, and temperature changes. The multiple detectors can improve the accuracy and reliability of monitoring and promptly detect potential safety hazards.

[0015] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the fire control panel is electrically connected to the audible and visual alarm device and the alarm bell, which are located above the fire control panel.

[0016] In this application, the fire alarm control panel is electrically connected to the audible and visual alarm device and the alarm bell. The audible and visual alarm device and the alarm bell are located above the fire alarm control panel. In the event of an emergency such as a fire, the audible and visual alarm device and the alarm bell can issue an alarm in a timely manner to remind relevant personnel to take timely measures, thereby improving the response speed to emergency situations.

[0017] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the compartment has a water spray pipe above the battery rack and a water fire-fighting interface at the bottom side of the equipment room, which is connected to the water spray pipe; the bottom side of the compartment has several drainage outlets, which are arranged along the length of the compartment.

[0018] In this application, the storage compartment is equipped with a water spray system above the battery rack, and a fire extinguishing water interface connected to the water spray system is located at the bottom side of the equipment room. In the event of a fire, the water spray system can spray water to extinguish the fire, providing an additional fire extinguishing method and enhancing the fire extinguishing capability of the energy storage compartment. Several drainage outlets are located at the bottom side of the compartment and are arranged along its length. After the water spray system extinguishes the fire, the drainage outlets can promptly drain any accumulated water, preventing damage to the compartment and equipment.

[0019] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the integrated control cabinet includes a control cabinet and a combiner cabinet, which are distributed vertically within the electrical room.

[0020] The integrated control cabinet in this application includes a control cabinet and a busbar cabinet, which are distributed vertically in the electrical room. This makes reasonable use of the space in the electrical room, integrates two types of equipment together, facilitates management and maintenance, and also reduces the floor space occupied by the equipment.

[0021] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the control cabinet is connected to the liquid cooling unit and the main fire-fighting unit. The control cabinet includes an uninterruptible power supply, a battery management system, and several protective electrical appliances.

[0022] As described above, the control cabinet is connected to the liquid cooling unit and the fire suppression system, enabling centralized control and management of all critical equipment within the energy storage compartment, thus improving system synergy and operational efficiency. The control cabinet includes an uninterruptible power supply (UPS), a battery management system, and several protective electrical components. The battery management system is electrically connected to all battery modules, and the UPS ensures normal system operation during power outages.

[0023] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the combiner cabinet is equipped with a power cable interface for connecting to the energy storage converter; the combiner cabinet is electrically connected to the high-voltage box via a power cable.

[0024] With the above structural design, the combiner cabinet is equipped with a power cable interface for connection to the energy storage converter. This efficient integration of electrical energy facilitates the connection between the energy storage compartment and the external power grid, enabling the transmission and distribution of electrical energy. The combiner cabinet and the high-voltage box are electrically connected via power cables, realizing the transmission of electrical energy between the battery modules and the combiner cabinet, ensuring the rational flow and use of electrical energy within the energy storage compartment.

[0025] As a preferred implementation of a modular lithium-ion battery energy storage compartment, the compartment includes an outer panel that covers two sides in the width direction, two sides in the height direction, and the side in the width direction opposite to the equipment room.

[0026] The above-mentioned structural design includes an outer panel that covers two sides in the width direction, two sides in the height direction, and the side in the width direction opposite to the equipment room. The outer panel serves a protective function, protecting the equipment inside the cabin from external environmental influences such as dust, rain, and impacts, thereby improving the protective performance and service life of the energy storage cabin.

[0027] The beneficial effects of this utility model include:

[0028] This utility model adopts a modular design of "one rack with two clusters and one compartment with two stacks". Each battery rack can place two sets of battery clusters along the height direction. Each set of battery clusters includes multiple battery modules. All battery clusters are evenly divided to form two sets of battery stacks. Each high-voltage box can control the two sets of battery clusters on the corresponding battery rack above. This not only makes full use of the space of the compartment and increases the battery arrangement density, which is conducive to improving energy density, but also reduces the amount of DC and communication harnesses and liquid cooling pipes used, reducing design costs. It can also achieve flexible grouping with energy storage converters of various specifications, reducing design redundancy, improving scalability, compatibility and environmental adaptability, and also achieve the effect of rapid equipment installation and flexible deployment. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional external structural diagram of a modular lithium-ion battery energy storage compartment according to a specific embodiment of the present utility model.

[0031] Figure 2 This is a schematic diagram of the external structure of a modular lithium-ion battery energy storage compartment from the left side in a specific embodiment of this utility model.

[0032] Figure 3 This is a front view of the internal structure of a modular lithium-ion battery energy storage compartment according to a specific embodiment of this utility model.

[0033] Figure 4 This is a left-side view of the internal structure of a modular lithium-ion battery energy storage compartment according to a specific embodiment of the present utility model.

[0034] Figure 5 This is a top view of the internal structure of a modular lithium-ion battery energy storage compartment according to a specific embodiment of this utility model.

[0035] Figure 6This is a three-dimensional internal structure diagram of a modular lithium-ion battery energy storage compartment according to a specific embodiment of this utility model.

[0036] Figure 7 This is a schematic diagram of the integrated control cabinet for a modular lithium-ion battery energy storage compartment in a specific embodiment of this utility model.

[0037] List of components and reference numerals:

[0038] 1. High-voltage box; 2. Battery module; 3. System emergency stop button; 4. Manual release button; 5. Emergency stop button; 6. Fan emergency start / stop button; 7. Fire alarm control panel; 8. Do not enter indicator light for venting gas; 9. Alarm bell; 10. Audible and visual alarm device; 11. Exhaust fan; 12. Smoke detector; 13. Temperature detector; 14. Carbon monoxide detector; 15. Hydrogen detector; 16. Liquid cooling piping; 17. Air inlet louvers; 18. 19. Liquid-cooled unit; 191. Combiner control cabinet; 192. Control cabinet; 20. Water fire extinguishing interface; 21. Aerosol fire extinguishing device; 22. Dehumidifying fan; 23. Water spray pipeline; 24. Battery rack; 25. High-voltage box cover; 26. Grounding device; 27. Drain outlet; 28. Uninterruptible power supply; 29. ​​Battery management system; 30. Disconnecting switch; 31. High-voltage box guide rail; 32. Mounting bracket; 33. Outer panel. Detailed Implementation

[0039] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Reference Figure 1-7 This embodiment proposes a modular lithium-ion battery energy storage compartment, including a compartment body, within which are a battery compartment and an equipment compartment, separated by a partition. The compartment body includes an outer panel 33, which covers two sides in the width direction, two sides in the height direction, and the side in the width direction opposite to the equipment compartment. The compartment body adopts a standard 20-foot container design, possessing an IP55 protection rating and a C5 corrosion resistance rating, and can adapt to a wide humidity range of 0-95%. The outer panel 33 is made of weathering steel SPA-H, protected by a three-layer coating of zinc-rich primer, epoxy intermediate paint, and polyurethane outer paint, effectively resisting ultraviolet radiation.

[0041] The battery compartment includes several battery racks 24 distributed along the length of the compartment. Each battery rack 24 can hold two sets of battery clusters along the height of the compartment. Each set of battery clusters includes several battery modules 2. All battery clusters are evenly divided to form two sets of battery stacks. The battery modules 2 follow the 1P104S standardized design concept. The entire set of battery modules 2 uses standard power, communication and three-stage liquid cooling pipeline 16 quick-connect interfaces. Below each battery rack 24 is a high-voltage box guide rail 31 for mounting the high-voltage box 1. Each high-voltage box 1 can control two sets of battery clusters on the corresponding battery rack 24 above. A high-voltage box cover plate 25 is provided between the battery rack 24 and the high-voltage box guide rail 31 of the high-voltage box 1 to prevent liquid from entering the high-voltage box 1. The equipment room is located on one side of the cabin along the length direction and is open. The equipment room is divided into a liquid cooling room and an electrical room along the width direction of the cabin. The liquid cooling room is used to house the liquid cooling unit 18, and the electrical room is used to house the combined control cabinet 19. A mounting bracket 32 ​​is provided on the side of the electrical room away from the liquid cooling room along the width direction of the cabin. The mounting bracket 32 ​​is used to install the fire control host 7.

[0042] This embodiment adopts a modular integrated design of "one frame with two clusters and one compartment with two stacks", referring to Figure 3 In one specific embodiment, there are six battery racks 24, each with two battery clusters arranged along its height. Each battery cluster includes four battery modules 2, and every six battery clusters constitute a battery stack. The high-voltage box 1 uses a two-in-one combination scheme, where a single high-voltage box 1 can control the two battery clusters on the corresponding battery rack 24 above. The entire cabin contains a total of 48 battery modules, 6 high-voltage boxes, 12 battery clusters, and 2 battery stacks. The modular design of this embodiment not only makes full use of the cabin space and increases the battery arrangement density, which is beneficial to improving energy density, but also reduces the amount of DC and communication harnesses and liquid cooling pipes used, reducing design costs. It also allows for flexible grouping with various specifications of energy storage converters, reducing design redundancy, improving scalability, compatibility, and environmental adaptability, and achieving the effect of rapid equipment installation and flexible deployment.

[0043] In this embodiment, every four battery modules 2 form a battery cluster, each battery rack 24 holds two battery clusters, and every six battery clusters constitute a battery stack. The entire compartment contains a total of 48 battery modules 2, 6 high-voltage boxes 1, 12 battery clusters, and 2 battery stacks. The modular and integrated design of the battery clusters reduces the amount of DC and communication wiring harnesses and liquid cooling pipes 16 used, lowering design costs, and also allows for flexible grouping with various specifications of energy storage converters, reducing design redundancy.

[0044] The chamber is equipped with liquid-cooled piping 16, which adopts an integrated three-stage design. The piping is divided into primary, secondary, and tertiary stages. The primary stage connects to the liquid-cooling unit 18 and is located at the bottom of the chamber. The secondary stage consists of several branches of the primary stage, distributed on both sides of the battery rack 24. The tertiary stage consists of several branches of the secondary stage. Each battery module 2 has a liquid-cooled base plate at its bottom, and the tertiary stage connects to this base plate. This design ensures consistent liquid pressure in the inlet and outlet circuits of each battery cluster and uniform coolant flow, improving heat dissipation consistency. The coolant in the liquid-cooled piping 16 is a 50% ethylene glycol deionized water solution, ensuring that freezing will not occur at the design ambient temperature.

[0045] The liquid cooling system comprises a liquid-cooled base plate, liquid-cooled piping 16, a liquid-cooled unit 18, and coolant. This system employs a cell temperature difference control strategy, adjusting parameters such as the liquid delivery temperature and flow rate in real time based on the maximum cell temperature difference. This addresses the issues of low heat dissipation control accuracy and lag response, thereby improving heat dissipation efficiency. The inlet and outlet of the liquid-cooled unit 18 are located on the same side of the compartment, with reserved space to ensure smooth ventilation and prevent backflow.

[0046] The fire alarm control panel 7 is electrically connected to the detectors, which are located above the battery rack 24. The detectors include a carbon monoxide detector 14, a hydrogen detector 15, a smoke detector 12, and a temperature detector 13. Several of each type of detector are provided and evenly arranged along the length of the cabin. The fire alarm control panel 7 is electrically connected to the exhaust fan 11 and the air inlet louvers 17. The exhaust fan 11 is located on one side of the battery compartment along the width of the cabin. The air inlet louvers 17 are located on the same side of the cabin as the exhaust fan 11. The exhaust fan 11 is located at the top side of the cabin, and the air inlet louvers 17 are located at the bottom side of the cabin. The exhaust fan 11 and the air inlet louvers 17 are staggered along the length of the cabin. The fire alarm control panel 7 is electrically connected to the do-not-enter indicator light 8 and several aerosol extinguishing devices 21. The do-not-enter indicator light 8 is located above the fire alarm control panel 7, and the several aerosol extinguishing devices 21 are located above the battery rack 24 and arranged along the length of the cabin. The fire alarm control panel 7 is also electrically connected to the audible and visual alarm device 10 and the alarm bell 9, which are located above the fire alarm control panel 7. A water spray pipe 23 is provided above the battery rack 24 in the cabin. A water fire-fighting interface 20 is provided on the bottom side of the cabin where the equipment room is located, and the water fire-fighting interface 20 is connected to the water spray pipe 23. Several drain outlets 27 are provided on the bottom side of the cabin, arranged along the length of the cabin.

[0047] During the fire, in the early stages of thermal runaway, the concentration of combustible gas exceeds the standard, triggering carbon monoxide detector 14 and hydrogen detector 15, which upload gas detection warning information to the fire control panel 7. This triggers the exhaust fan 11 and air inlet louvers 17 to open for ventilation, expelling the combustible gas. As the thermal runaway spreads further, the smoke concentration and temperature rise significantly, triggering smoke detector 12 and alarm bell 9. Simultaneously, a first-level alarm is uploaded to the fire control panel 7. As the thermal runaway spreads rapidly, the smoke concentration and temperature rise rapidly. Smoke detector 12 and temperature detector 13 trigger the audible and visual alarm device 10, uploading a second-level alarm to the fire control panel 7. After a 30-second countdown, the exhaust fan 11 and air inlet louvers 17 are shut down, the "Do Not Enter" indicator light 8 illuminates as a warning, and the aerosol extinguishing device 21 is activated to flood the entire compartment with aerosol. At the same time, the fire control panel 7 uploads the above alarm information to the battery management system 29. When a fire inside the cabin has spread and is likely to escalate further, manual intervention is initiated by activating the water sprinkler system 23 to extinguish the fire, continuously cooling and preventing reignition. Excess fire-fighting wastewater is then drained through the drain outlet 27. In emergencies, the system emergency stop button 3 stops the system and cuts off power, activating forced protection and isolating the entire system. The manual release button 4 allows manual initiation of aerosol spraying. If an abnormal situation occurs during aerosol spraying or if the danger is confirmed to have passed, pressing the emergency stop button 5 immediately stops the continued spraying of aerosols, preventing unnecessary waste and reducing damage to equipment. Compared to commonly used pressurized perfluorohexanone (PFH) fire extinguishing systems in China, aerosol is an environmentally friendly extinguishing agent with advantages such as simple maintenance, strong environmental adaptability, and long service life. The emergency start / stop button 6 allows manual control of the exhaust fan 11 and the air inlet louvers 17, ensuring a continuous influx of fresh air, creating good ventilation circulation, and reducing the temperature and concentration of harmful gases inside the cabin. If the emergency is resolved or ventilation needs to be stopped, pressing the button again will stop the exhaust fan 11 and close the air inlet louvers 17. In addition, the entire cabin is equipped with four small-volume dehumidifying fans 22, enabling the system to operate reliably in harsh and humid environments, improving the cabin's environmental adaptability. Their compact size overcomes the limitations of narrow spaces, and their multi-point arrangement results in better air circulation and more even humidity distribution within the cabin.

[0048] The integrated control cabinet 19 includes a control cabinet 191 and a combiner cabinet 192. The control cabinet 191 and the combiner cabinet 192 are distributed vertically in the electrical room, and the bottom and sides are fixed to the cabin by bolts.

[0049] The control cabinet 191 is electrically connected to the liquid cooling unit 18 and the fire control panel 7. The control cabinet 191 can distribute power to all electrical equipment in the cabin. The control cabinet 191 includes an uninterruptible power supply 28, a battery management system 29 and several protective electrical devices, such as surge protectors, isolation transformers, miniature circuit breakers, etc. The battery management system 29 can collect the status information of all the cells and battery modules 2 under its jurisdiction.

[0050] The main function of combiner cabinet 192 is to collect electrical quantities such as current or voltage from multiple input circuits into one output circuit, realizing centralized transmission and distribution. For example, in a photovoltaic power generation system, the DC power from multiple photovoltaic strings can be collected and then transmitted to equipment such as inverters; in other power systems, the electrical energy from multiple power sources or branches can also be integrated to reduce the number of lines and optimize wiring. In this embodiment, combiner cabinet 192 is equipped with a power cable interface for connecting to the energy storage converter; the DC copper busbar of combiner cabinet 192 is electrically connected to the high-voltage box 1 via a power cable and provides two external outputs, each equipped with an isolating switch 30, corresponding to two energy storage converters operating in parallel, using a bottom-in and bottom-out wiring method. Control cabinet 191 and combiner cabinet 192 are combined into a combined control cabinet 19. The modular integrated design simplifies the wiring inside the cabinet, reduces installation and maintenance costs, and enhances coordination.

[0051] In this embodiment, four grounding devices 26 are installed on the bottom side of the cabin. The grounding wires of electrical equipment such as battery clusters, integrated control cabinets 19, high-voltage boxes 1, and liquid cooling units 18 are connected to the internal grounding devices 26 and led out to the external grounding devices by copper busbars.

[0052] In this embodiment, the battery rack 24 and other profiles inside the cabin are made of low-alloy high-strength structural steel Q235B, and are hot-dip galvanized for corrosion protection. The cabin frame is constructed by welding to ensure the mechanical strength of the entire cabin and prevent permanent deformation.

[0053] This embodiment adopts a modular design, which is flexible, convenient, cost-effective, and efficient. It supports rapid installation and flexible deployment of components to meet the needs of different scenarios. It is compatible with side-by-side, back-to-back, and grid-like energy storage power station design layouts, significantly reducing installation and operation and maintenance costs.

[0054] This embodiment has a certain degree of scalability and can be adapted and customized. It can be customized according to the power standards, environmental conditions and user needs of different countries and regions to meet the diverse needs of the market and achieve a smooth transition from small-scale to large-scale and seamless connection of distributed energy.

[0055] This embodiment boasts high reliability, employing high-strength materials and a fully enclosed design throughout the cabin. The high-strength materials provide excellent structural strength and impact resistance, effectively resisting external physical damage and the impact of natural disasters. The enclosed design offers a safe and stable operating environment for the internal batteries and electrical equipment, effectively preventing dust, moisture, corrosive gases, and other contaminants from entering the cabin, reducing equipment failure rates and extending equipment lifespan.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular lithium-ion battery energy storage compartment, comprising a compartment body, wherein a battery compartment and an equipment compartment are provided within the compartment body, and a partition plate is provided between the battery compartment and the equipment compartment, characterized in that, The battery compartment includes several battery racks (24) distributed along the length of the compartment. Each battery rack (24) can hold two sets of battery clusters along the height of the compartment. Each set of battery clusters includes several battery modules (2). All battery clusters are evenly divided to form two sets of battery stacks. Each battery rack (24) is provided with a high-voltage box guide rail (31) for installing a high-voltage box (1) below it. A high-voltage box cover plate (25) is provided between the battery rack (24) and the high-voltage box guide rail (31). The equipment room is located on one side of the length direction of the cabin. The equipment room is open on one side of the length direction of the cabin. The equipment room is divided into a liquid cooling room and an electrical room along the width direction of the cabin. The liquid cooling room is used to house the liquid cooling unit (18), and the electrical room is used to house the combined control cabinet (19). The electrical room is provided with a mounting bracket (32) on the side away from the liquid cooling room along the width direction of the cabin. The mounting bracket (32) is used to install the fire control unit (7).

2. The modular lithium-ion battery energy storage compartment according to claim 1, characterized in that, The cabin is equipped with liquid cooling pipes (16). The liquid cooling pipes (16) are divided into primary pipes, secondary pipes and tertiary pipes according to the hierarchy. The primary pipes are connected to the liquid cooling unit (18) and located at the bottom of the cabin. The secondary pipes are several branches of the primary pipes. The secondary pipes are distributed on both sides of the battery rack (24). The tertiary pipes are several branches of the secondary pipes. Each battery module (2) has a liquid cooling base plate at its bottom. The tertiary pipes are connected to the liquid cooling base plate.

3. The modular lithium-ion battery energy storage compartment according to claim 1, characterized in that, The fire alarm control panel (7) is electrically connected to the detector, which is located above the battery rack (24); The fire control unit (7) is electrically connected to the exhaust fan (11) and the air inlet louver (17). The air inlet louver (17) and the exhaust fan (11) are located on the same side of the cabin. The exhaust fan (11) is located at the top side of the cabin, and the air inlet louver (17) is located at the bottom side of the cabin. The exhaust fan (11) and the air inlet louver (17) are staggered along the length of the cabin. The fire control panel (7) is electrically connected to the Do Not Enter the Exhaust Indicator (8) and several aerosol extinguishing devices (21). The Do Not Enter the Exhaust Indicator (8) is located above the fire control panel (7), and several aerosol extinguishing devices (21) are located above the battery rack (24) and arranged along the length of the cabin.

4. A modular lithium-ion battery energy storage compartment according to claim 3, characterized in that, The detectors include a carbon monoxide detector (14), a hydrogen detector (15), a smoke detector (12), and a temperature detector (13), with several of each type arranged along the length of the cabin.

5. A modular lithium-ion battery energy storage compartment according to claim 3, characterized in that, The fire alarm control panel (7) is electrically connected to the audible and visual alarm device (10) and the alarm bell (9), which are located above the fire alarm control panel (7).

6. A modular lithium-ion battery energy storage compartment according to claim 1, characterized in that, The cabin has a water spray pipe (23) above the battery rack (24), and a water fire-fighting interface (20) is provided at the bottom side of the equipment room. The water fire-fighting interface (20) is connected to the water spray pipe (23). The bottom side of the cabin has several drain outlets (27), which are arranged along the length of the cabin.

7. A modular lithium-ion battery energy storage compartment according to claim 1, characterized in that, The combined control cabinet (19) includes a control cabinet (191) and a combiner cabinet (192), which are located vertically in the electrical room.

8. A modular lithium-ion battery energy storage compartment according to claim 7, characterized in that, The control cabinet (191) is electrically connected to the liquid cooling unit (18) and the fire alarm control panel (7). The control cabinet (191) includes an uninterruptible power supply (28), a battery management system (29), and several protective electrical appliances.

9. A modular lithium-ion battery energy storage compartment according to claim 7, characterized in that, The combiner cabinet (192) is equipped with a power cable interface, which is used to connect to the energy storage converter; the combiner cabinet (192) is electrically connected to the high voltage box (1) via a power cable.

10. A modular lithium-ion battery energy storage compartment according to claim 1, characterized in that, The cabin includes an outer panel (33) that covers two sides in the width direction, two sides in the height direction, and the side in the width direction opposite to the equipment room.

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