High-energy-density lithium ion battery energy storage prefabricated cabin

Abstract

The invention relates to a high-energy-density lithium ion battery energy storage prefabricated cabin, and belongs to the technical field of new energy equipment, the prefabricated cabin is divided into a battery cabin and a control cabin by a partition plate, cabin doors are arranged on the battery cabin and the control cabin, and a battery management system BMS, a confluence power distribution cabinet and an uninterruptible power supply UPS are all integrated in the control cabin; a battery rack for dividing an inner cavity of the battery cabin into a plurality of spaces for placing the liquid-cooled battery modules is arranged in the battery cabin, and the liquid-cooled battery modules are arranged in the battery rack. Through the arrangement of the battery rack, the arrangement and layout of the liquid-cooled battery modules are optimized, the liquid-cooled battery modules are integrated as many as possible in a limited space, the energy storage capacity of the battery cabin is improved, and the volume energy density of the prefabricated cabin is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy equipment, and in particular to a high energy density lithium ion battery energy storage prefabricated cabin. Background Art

[0002] With the large-scale access of new energy to the power grid, the proportion of new energy on the power supply side is becoming increasingly larger, and its consumption cannot be separated from the support of energy storage systems.

[0003] The energy storage system is a system that stores electrical energy. According to the principle and implementation method, it can be divided into pumped storage, compressed air energy storage, flywheel energy storage and electrochemical energy storage.

[0004] Considering system efficiency, construction cycle and construction cost, the electrochemical energy storage system is considered to be the energy storage system with the greatest development potential. At present, the scale of electrochemical energy storage in my country has reached 18.6 million kWh, accounting for 38% of the world. It is expected that in 2030 and 2060, the scale of electrochemical energy storage in my country will exceed 120 million and 200 million kWh respectively. In electrochemical energy storage, lithium-ion battery energy storage systems account for 94.5%.

[0005] At present, the large-scale application of lithium-ion battery energy storage systems is still restricted by safety and floor space. In this context, in order to better solve the above problems, the present invention proposes a high energy density lithium-ion battery energy storage prefabricated cabin. Summary of the invention

[0006] The object of the present invention is to provide a high energy density lithium-ion battery energy storage prefabricated cabin for solving any of the above-mentioned technical problems.

[0007] In order to achieve the above object, the present invention provides the following technical solutions: A high energy density lithium-ion battery energy storage prefabricated cabin, comprising a cabin, a converter, a battery management system BMS, a busbar distribution cabinet, a liquid-cooled battery module, a high-voltage box and an uninterruptible power supply UPS, wherein the busbar distribution cabinet is connected to the DC side of the converter via a busbar copper bar, the cabin is divided into a battery cabin and a control cabin by a partition, and both the battery cabin and the control cabin are provided with cabin doors, and the battery management system BMS, the busbar distribution cabinet and the uninterruptible power supply UPS are integrated in the control cabin; A battery rack is provided in the battery compartment, and the battery rack is used to divide the inner cavity of the battery compartment into several spaces, and the liquid-cooled battery module is installed in the battery rack. Through the setting of the battery rack, the arrangement and layout of the liquid-cooled battery module are optimized, and as many liquid-cooled battery modules as possible are integrated in a limited space, thereby increasing the energy storage capacity of the battery compartment and thus increasing the volume energy density of the prefabricated compartment.

[0008] Further, the liquid-cooled battery module is connected in series with the high-voltage box, and the high-voltage boxes are connected in parallel with each other; A fire control host is also integrated in the control cabin; There are dot-type heat detectors and smoke detectors installed on the top of the battery compartment; The point-type temperature detector and the smoke detector are both connected to the fire control host. The point-type temperature detector detects the temperature in the battery compartment and uploads the detected temperature data to the fire control host, which monitors the temperature value in the battery compartment in real time through the point-type temperature detector; the smoke detector detects the smoke concentration in the battery compartment and uploads the detected smoke concentration data to the fire control host, which monitors the smoke concentration value in the battery compartment in real time through the smoke detector.

[0009] Furthermore, the prefabricated cabin is equipped with a gas fire extinguishing device, which includes a gas storage tank, a gas pipeline and a gas fire extinguishing nozzle. The gas storage tank is installed in the control cabin, and the gas fire extinguishing nozzle is installed in the battery cabin. The gas pipeline is used to connect the gas storage tank and the gas fire extinguishing nozzle. A first electric control valve is provided on the gas pipeline. The fire control host is connected to the first electric control valve to control the opening and closing of the first electric control valve. When the fire control host detects through the smoke detector that the smoke concentration in the battery cabin exceeds the preset concentration value, the first electric control valve is controlled to open, and the gas stored in the gas storage tank is sprayed into the prefabricated cabin through the gas pipeline and the gas fire extinguishing nozzle to extinguish the fire.

[0010] Furthermore, the prefabricated cabin is equipped with a water fire extinguishing device, which includes a water fire extinguishing interface, a water pipe and a water nozzle. The water fire extinguishing interface is provided on the side wall of the battery compartment for connecting a water source. The water pipe and the water nozzle are provided in the battery compartment. The water fire extinguishing interface is connected to the water pipe. A second electric control valve is provided on the water pipe. The fire control host is connected to the second electric control valve for controlling the opening and closing of the second electric control valve. When the fire control host detects that the temperature value in the battery compartment exceeds a preset value through a point-type temperature sensing detector, the second electric control valve is controlled to open, so that the water source connected to the water fire extinguishing interface flows to the water nozzle through the water pipe and is sprayed out through the water nozzle to extinguish the fire.

[0011] Furthermore, a liquid cooling temperature control system and a circulation pump are installed on the side wall of the battery compartment. The liquid cooling temperature control system is connected to the point-type temperature sensing detector for detecting the temperature in the battery compartment. A heat dissipation circulation pipeline for injecting coolant is also installed in the battery compartment. The circulation pump is connected to the heat dissipation circulation pipeline and is used to promote the circulation of the coolant in the heat dissipation circulation pipeline; The liquid cooling temperature control system is connected to the circulation pump to control the operation of the circulation pump. The circulation pump is used to promote the circulation of the coolant in the heat dissipation circulation pipeline. The liquid cooling temperature control system controls the operation of the circulation pump according to the temperature signal in the battery compartment detected by the point-type temperature sensor, ensuring that the liquid-cooled battery module works within a suitable temperature range, thereby improving the charging and discharging efficiency and cycle life of the liquid-cooled battery module.

[0012] Furthermore, a combustible gas control host is integrated in the control cabin, a combustible gas detector is installed on the top of the battery cabin, and the combustible gas control host is connected to the combustible gas detector; The control cabin is provided with an in-station sound and light alarm; The prefabricated cabin is equipped with an off-site explosion-proof sound and light alarm; The combustible gas control host is connected to the sound and light alarm inside the station and the explosion-proof sound and light alarm outside the station respectively.

[0013] Furthermore, an emergency start-stop switch is also provided in the control cabin; The fire control host is connected to the emergency start and stop switch.

[0014] Furthermore, a dehumidifying air conditioner is provided in the control cabin.

[0015] Furthermore, a pressure relief device is provided on the side wall of the battery compartment, and the pressure relief device includes a valve body, an opening and closing plate and a magnetic sheet. An air hole is opened on the side wall of the battery compartment, and the valve body is installed on the side wall of the battery compartment and covers the air hole. The opening and closing plate is rotatably installed on the valve body through a movable part, and the magnetic sheet is installed on the valve body. The opening and closing plate is tightly fitted to the valve body through the magnetic sheet.

[0016] Furthermore, the side walls of the control cabin are provided with air inlet and outlet louvers and an air outlet.

[0017] Beneficial effects of the present invention: The present invention adopts multi-level fire extinguishing safety measures of gas fire extinguishing devices and water fire extinguishing devices to monitor and respond quickly to fire and electrical faults in real time, ensuring the safety and reliability of the prefabricated cabin; Under the premise of ensuring the heat dissipation performance of the prefabricated cabin, the present invention optimizes the arrangement and layout of the liquid-cooled battery modules through the arrangement of the battery rack, integrates as many liquid-cooled battery modules as possible within a limited space, improves the energy storage capacity of the battery cabin, and further improves the volume energy density of the prefabricated cabin, which not only reduces the floor space, reduces the manufacturing and transportation costs, improves the operability and economy, and significantly improves the space utilization and reduces the cost; The liquid cooling temperature control system of the present invention controls the operation of the circulation pump according to the temperature signal in the battery compartment detected by the point-type temperature sensing detector, thereby ensuring that the liquid-cooled battery module operates within an appropriate temperature range, thereby improving the charging and discharging efficiency and cycle life of the liquid-cooled battery module; avoiding damage to the liquid-cooled battery module due to overheating, reducing safety risks, and the stable temperature helps to reduce fluctuations in the performance of the liquid-cooled battery module and improve the reliability of the entire prefabricated compartment.

[0018] These and other objects, features and advantages of the present invention will be fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the internal structure of a high energy density lithium-ion battery energy storage prefabricated cabin of the present invention is shown.

[0020] Figure 2 A schematic diagram of the three-dimensional structure of a high energy density lithium-ion battery energy storage prefabricated cabin of the present invention is shown.

[0021] Figure 3 A front structural schematic diagram of a high energy density lithium-ion battery energy storage prefabricated cabin of the present invention is shown.

[0022] Figure 4 A rear structural schematic diagram of a high energy density lithium-ion battery energy storage prefabricated cabin of the present invention is shown.

[0023] Figure 5 A left-side structural schematic diagram of a high energy density lithium-ion battery energy storage prefabricated cabin of the present invention is shown.

[0024] Figure 6 The schematic diagram of the right side structure of the high energy density lithium ion battery energy storage prefabricated cabin of the present invention is shown.

[0025] Figure 7 A schematic structural diagram of a battery cluster of a prefabricated high energy density lithium-ion battery energy storage compartment of the present invention is shown.

[0026] Figure 8 A schematic structural diagram of a battery rack of a prefabricated high energy density lithium-ion battery energy storage cabin of the present invention is shown.

[0027] Fig. 9 A schematic side view of a battery rack of a prefabricated high energy density lithium-ion battery energy storage compartment of the present invention is shown.

[0028] Fig.10 A structural schematic diagram of a control cabin of a high energy density lithium-ion battery energy storage prefabricated cabin of the present invention is shown.

[0029] Fig.11 The schematic diagram of the structure of the gas fire extinguishing device of the high energy density lithium ion battery energy storage prefabricated cabin of the present invention is shown.

[0030] Fig.12 The electrical principle diagram of the high energy density lithium-ion battery energy storage prefabricated cabin of the present invention is shown.

[0031] Figure markings: 1-combustible gas control host; 2-fire control host; 3-battery management system BMS; 4-bus distribution cabinet; 5-point temperature detector; 6-smoke detector; 7-gas fire extinguishing nozzle; 8-combustible gas detector; 9-liquid-cooled battery module; 10-high-voltage box; 11-pressure relief device; 12-liquid-cooled temperature control system; 13-inlet and outlet air louvers; 14-water fire protection interface; 15-grounding device; 16-hanging column; 17-dehumidification air conditioner; 18-air outlet; 19-battery rack; 20-uninterruptible power supply UPS; 21-gas storage tank; 22-emergency start and stop switch. DETAILED DESCRIPTION

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0033] It should be understood by those skilled in the art that, in the disclosure of the specification, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device including a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. Therefore, the above terms should not be understood as limiting the present invention.

[0034] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0035] refer to Figures 1 to 11 A high energy density lithium-ion battery energy storage prefabricated cabin according to a preferred embodiment of the present invention will be described in detail below, wherein the prefabricated cabin includes a cabin body, an inverter, a battery management system BMS3, a bus distribution cabinet 4, a liquid-cooled battery module 9, a high-voltage box 10 and an uninterruptible power supply UPS20, the bus distribution cabinet 4 is connected to the DC side of the inverter through a bus copper bus, the cabin body is divided into a battery cabin and a control cabin by a partition, and both the battery cabin and the control cabin are provided with cabin doors, and the battery management system BMS3, the bus distribution cabinet 4 and the uninterruptible power supply UPS20 are all integrated in the control cabin.

[0036] A battery rack 19 is provided in the battery compartment, and the battery rack 19 is used to divide the inner cavity of the battery compartment into a plurality of spaces, and the liquid-cooled battery module 9 is installed in the space of the battery rack 19 .

[0037] Under the premise of ensuring the heat dissipation performance of the prefabricated cabin, the present invention optimizes the arrangement and layout of the liquid-cooled battery modules 9 through the arrangement of the battery rack, integrates as many liquid-cooled battery modules 9 as possible within a limited space, improves the energy storage capacity of the battery cabin, and further improves the volume energy density of the prefabricated cabin, which not only reduces the floor space, reduces the manufacturing and transportation costs, improves the operability and economy, but also significantly improves the space utilization and reduces the cost.

[0038] The battery rack 19 divides the battery compartment for placing the liquid-cooled battery modules 9 into a plurality of spaces evenly and neatly, optimizes the arrangement and layout of the liquid-cooled battery modules 9, improves the integration of the prefabricated compartment, integrates as many liquid-cooled battery modules 9 as possible in the limited battery compartment, and improves the energy storage density of the prefabricated compartment.

[0039] For example, in combination Figure 1 and Fig. 9 The cabin is divided into a uniform space with six columns in length and two columns in width by a battery rack 19. Twelve battery clusters are placed in the battery rack 19. A single battery cluster includes eight liquid-cooled battery modules 9 and a high-voltage box 10. The liquid-cooled battery modules 9 are connected in series with the high-voltage box 10, and the high-voltage boxes 10 are connected in parallel with each other.

[0040] By using the standard 20-foot container size and optimizing the arrangement and layout of the liquid-cooled battery modules 9, 96 liquid-cooled battery modules 9 are integrated in a limited space, thereby improving the integration of the prefabricated cabin and achieving a storage capacity of up to 5MWh. The volume energy density of the prefabricated cabin reaches 116.8Wh / L. In this embodiment, the liquid-cooled battery module 9 uses a liquid-cooled lithium iron phosphate battery (PACK).

[0041] like Fig. 9 As shown, there is a height difference between the two rows of racks in the width direction of the battery rack 19, and the height difference between the racks can achieve fixed clamping between the two rows of liquid-cooled battery modules 9 in the width direction; in addition, the height difference is provided to facilitate internal wiring, further save space, optimize space utilization, and achieve efficient equipment integration in a compact space.

[0042] In this embodiment, a fire control host 2 is also integrated in the control cabin, and a point-type temperature detector 5 and a smoke detector 6 are installed on the top of the battery cabin; the point-type temperature detector 5 and the smoke detector 6 are both connected to the fire control host 2.

[0043] The point-type temperature detector 5 detects the temperature in the battery compartment and uploads the detected temperature data to the fire control host 2. When the fire control host 2 detects that the temperature in the battery compartment exceeds the preset temperature value through the point-type temperature detector 5, the gas fire extinguishing device and the water fire extinguishing device are controlled to extinguish the fire. The smoke detector 6 detects the smoke concentration in the battery compartment and uploads the detected smoke concentration data to the fire control host 2. When the fire control host 2 detects that the smoke concentration in the battery compartment exceeds the preset concentration value through the smoke detector 6, the gas fire extinguishing device and the water fire extinguishing device are controlled to extinguish the fire. The present invention adopts multi-level fire extinguishing safety measures of gas fire extinguishing devices and water fire extinguishing devices to monitor and respond quickly to fires and electrical faults in real time to ensure the safety and reliability of the prefabricated cabin.

[0044] The prefabricated cabin is equipped with a gas fire extinguishing device, which includes a gas storage tank 21, a gas pipeline and a gas fire extinguishing nozzle 7. The gas storage tank 21 is installed in the control cabin, and the gas fire extinguishing nozzle 7 is installed in the battery cabin. The gas pipeline is used to connect the gas storage tank 21 and the gas fire extinguishing nozzle 7. A first electric control valve is provided on the gas pipeline. The fire control host 2 is connected to the first electric control valve to control the opening and closing of the first electric control valve. When the fire control host 2 detects through the smoke detector 6 that the smoke concentration in the battery cabin exceeds the preset concentration value, the first electric control valve is controlled to open, and the gas stored in the gas storage tank 21 is sprayed into the prefabricated cabin through the gas pipeline and the gas fire extinguishing nozzle 7 to extinguish the fire. In this embodiment, the control cabin and the battery cabin are both equipped with gas fire extinguishing nozzles 7, and the gas fire extinguishing device extinguishes the fire of the entire prefabricated cabin.

[0045] The gas storage tank 21 is used to store inert gas. The gas pipeline connects the gas storage tank 21 to the gas fire extinguishing nozzle 7. The first electric control valve is used to control the flow of the inert gas. The fire control host 2 is responsible for controlling the switch of the first electric control valve to achieve the fire extinguishing operation. When the temperature detected by the point-type temperature sensor 5 exceeds the preset temperature value or the smoke detector 6 detects that the smoke concentration exceeds the preset concentration value, the fire control host 2 controls the first electric control valve to open, so that the inert gas in the gas storage tank 21 flows from the gas storage tank 21 through the gas pipeline to the gas fire extinguishing nozzle 7, and is sprayed out through the gas fire extinguishing nozzle 7 to extinguish the fire.

[0046] Exemplarily, the prefabricated cabin is equipped with a water fire extinguishing device, which includes a water fire-fighting interface 14, a water pipe and a water nozzle. The water fire-fighting interface 14 is provided on the side wall of the battery compartment for connecting a water source. The water pipe and the water nozzle are provided in the battery compartment. The water fire-fighting interface 14 is connected to the water pipe, and a second electric-controlled valve is provided on the water pipe. The fire control host 2 is connected to the second electric-controlled valve for controlling the opening and closing of the second electric-controlled valve. When the fire control host 2 detects that the temperature value in the battery compartment exceeds a preset value through the point-type temperature sensing detector 5, the second electric-controlled valve is controlled to open, so that the water source connected to the water fire-fighting interface 14 flows to the water nozzle through the water pipe, and is sprayed out through the water nozzle for fire extinguishing. In this embodiment, only the battery compartment is equipped with a water nozzle, and the water fire-extinguishing device only extinguishes the entire battery compartment.

[0047] For example, when the temperature detected by the point-type temperature detector 5 exceeds a preset temperature value or the smoke detector 6 detects that the smoke concentration exceeds a preset concentration value, the fire control host 2 controls the second electric control valve to open, so that the water source connected to the water fire interface 14 flows to the water nozzle through the water pipe and is sprayed out through the water nozzle to extinguish the fire. The multi-level safety measures of gas fire extinguishing devices and water fire extinguishing devices are used to monitor and respond quickly to fires and electrical faults in real time to ensure the safety and reliability of the prefabricated cabin.

[0048] Exemplarily, a liquid cooling temperature control system 12 and a circulation pump are also installed on the side wall of the battery compartment. The liquid cooling temperature control system 12 is connected to the point-type temperature sensing detector 5 for detecting the temperature inside the battery compartment. A heat dissipation circulation pipeline for injecting coolant is also installed in the battery compartment.

[0049] The circulation pump is connected to the heat dissipation circulation pipeline and is used to promote the circulation of the coolant in the heat dissipation circulation pipeline; the liquid cooling temperature control system 12 is connected to the circulation pump and is used to control the operation of the circulation pump.

[0050] The circulation pump is used to promote the circulation of the coolant in the heat dissipation circulation pipeline. The liquid cooling temperature control system 12 controls the operation of the circulation pump according to the temperature signal in the battery compartment detected by the point-type temperature sensor 5, ensures that the liquid cooling battery module 9 works within a suitable temperature range, and improves the charging and discharging efficiency and cycle life of the liquid cooling battery module 9. Avoid damage to the liquid cooling battery module 9 due to overheating and reduce safety risks. Stable temperature helps to reduce the fluctuation of the performance of the liquid cooling battery module 9 and improve the reliability of the entire prefabricated cabin. Compared with the air cooling system, the liquid cooling temperature control system can control the temperature more effectively, thereby improving the energy density of the prefabricated cabin. Under the premise of ensuring the heat dissipation performance of the prefabricated cabin, the present invention adopts the standard 20-foot container size, optimizes the arrangement and layout of the battery module, and integrates 96 liquid cooling battery modules 9 in a limited space, achieving a 5MWh energy storage capacity, and the volume energy density reaches 116.8Wh / L. In this embodiment, the liquid cooling battery module 9 adopts a liquid-cooled lithium iron phosphate battery PACK.

[0051] In this embodiment, a combustible gas control host 1 is also integrated in the control cabin, a combustible gas detector 8 is installed on the top of the battery cabin, and the combustible gas control host 1 is connected to the combustible gas detector 8; The control cabin is provided with an in-station sound and light alarm; The prefabricated cabin is equipped with an off-site explosion-proof sound and light alarm; The combustible gas control host 1 is connected to the sound and light alarm inside the station and the explosion-proof sound and light alarm outside the station respectively.

[0052] Exemplarily, an emergency start-stop switch 22 is also provided in the control cabin; The fire control host 2 is connected to the emergency start-stop switch 22.

[0053] The combustible gas control host is divided into two levels of control, as follows: Level 1 warning: When the combustible gas detector 8 detects VOC gas generated by electrolyte leakage or electrical overheating and surface decomposition, the combustible gas control host 1 issues a level 1 warning, the combustible gas control host 1 increases the sampling frequency, and does not output alarm information to the outside.

[0054] Secondary warning: When the combustible gas control host 1 detects that the carbon monoxide concentration exceeds the set threshold through the combustible gas detector 8, the combustible gas control host 1 controls the sound and light alarm inside the station and the explosion-proof sound and light alarm outside the station to alarm, and controls the emergency start-stop switch 22 to disconnect, disconnect the main distribution power supply in the battery compartment, and realize electrical isolation of the battery compartment.

[0055] Exemplarily, a pressure relief device 11 is provided on the side wall of the battery compartment, and the pressure relief device 11 includes a valve body, an opening and closing plate and a magnetic sheet. An air hole is opened on the side wall of the battery compartment, and the valve body is installed on the side wall of the battery compartment and covers the air hole. The opening and closing plate is rotatably installed on the valve body through a movable part, and the magnetic sheet is installed on the valve body, and the opening and closing plate is tightly fitted to the valve body through the magnetic sheet.

[0056] The pressure relief device 11 can release the air inside the battery compartment through the opening and closing plate when the air pressure inside the battery compartment increases after a fire occurs in the prefabricated cabin, thereby preventing the battery compartment from exploding due to excessive internal air pressure. The opening and closing plate is made of magnetic material, and when the air pressure inside the battery compartment is low, the opening and closing plate and the valve body are tightly attached through the magnetic sheet.

[0057] In this embodiment, the side wall of the control cabin is provided with air inlet and outlet louvers 13 and air outlets 18. In this embodiment, the lower part of the prefabricated cabin is also provided with a grounding device 15 for connecting a grounding wire, and a sling 16 for suspending the prefabricated cabin. In the specific setting, the position and number of the sling 16 can be set according to actual needs. A dehumidification air conditioner 17 is provided in the control cabin to remove the humidity in the control cabin.

[0058] It should be noted that the terms "first, second" in the present invention are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0059] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0060] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0061] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0062] Similarly, it should be understood that in order to simplify the present disclosure and help understand one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. More specifically, inventive aspects lie in less than all the features of a single embodiment disclosed above.

[0063] Those skilled in the art will appreciate that the modules in the devices in the embodiments can be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition they can be divided into multiple submodules or subunits or subassemblies. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification and all processes or units of any method or device disclosed in this manner can be combined in any combination. Unless otherwise clearly stated, each feature disclosed in this specification can be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0064] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, any one of the claimed embodiments may be used in any combination.

[0065] Although the present invention has been described in detail with reference to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily think of changes or substitutions within the technical scope disclosed by the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. A high energy density lithium-ion battery energy storage prefabricated cabin, comprising a cabin, an inverter, a battery management system BMS (3), a busbar distribution cabinet (4), a liquid-cooled battery module (9), a high-voltage box (10) and an uninterruptible power supply UPS (20), wherein the busbar distribution cabinet (4) is connected to the DC side of the inverter via a busbar copper bus, and is characterized in that: The cabin is divided into a battery cabin and a control cabin by a partition, and both the battery cabin and the control cabin are provided with cabin doors. The battery management system BMS (3), the busbar distribution cabinet (4) and the uninterruptible power supply UPS (20) are all integrated in the control cabin; A battery rack (19) is provided in the battery compartment, the battery rack (19) being used to divide the inner cavity of the battery compartment into a plurality of spaces, and the liquid-cooled battery module (9) is installed in the battery rack (19).

2. The prefabricated energy storage cabin according to claim 1, characterized in that: The liquid-cooled battery module (9) and the high-voltage box (10) are connected in series, and the high-voltage boxes (10) are connected in parallel with each other; The control cabin is also integrated with a fire control host (2); A point-type heat detector (5) and a smoke detector (6) are installed on the top of the battery compartment; The point-type temperature detector (5) and the smoke detector (6) are both connected to the fire control host (2).

3. The prefabricated energy storage cabin according to claim 2, characterized in that: The prefabricated cabin is equipped with a gas fire extinguishing device, which comprises a gas storage tank (21), a gas pipeline and a gas fire extinguishing nozzle (7). The gas storage tank (21) is installed in the control cabin, and the gas fire extinguishing nozzle (7) is installed in the battery cabin. The gas pipeline is used to connect the gas storage tank (21) and the gas fire extinguishing nozzle (7). A first electric control valve is provided on the gas pipeline. The fire control host (2) is connected to the first electric control valve and is used to control the opening and closing of the first electric control valve.

4. The prefabricated energy storage cabin according to claim 2, characterized in that: The prefabricated cabin is equipped with a water fire extinguishing device, which comprises a water fire extinguishing interface (14), a water pipeline and a water nozzle. The water fire extinguishing interface (14) is provided on the side wall of the battery cabin and is used to connect to a water source. The water pipeline and the water nozzle are provided in the battery cabin. The water fire extinguishing interface (14) is connected to the water pipeline. A second electric control valve is provided on the water pipeline. The fire control host (2) is connected to the second electric control valve and is used to control the opening and closing of the second electric control valve.

5. The prefabricated energy storage cabin according to claim 2, characterized in that: A liquid cooling temperature control system (12) and a circulation pump are also installed on the side wall of the battery compartment. The liquid cooling temperature control system (12) is connected to the point-type temperature sensing detector (5) and is used to detect the temperature in the battery compartment. A heat dissipation circulation pipeline for injecting coolant is also installed in the battery compartment. The circulation pump is connected to the heat dissipation circulation pipeline and is used to promote the circulation of the coolant in the heat dissipation circulation pipeline; The liquid cooling temperature control system (12) is connected to the circulation pump and is used to control the operation of the circulation pump.

6. The prefabricated energy storage cabin according to claim 2, characterized in that: The control cabin also integrates a combustible gas control host (1), a combustible gas detector (8) is installed on the top of the battery cabin, and the combustible gas control host (1) is connected to the combustible gas detector (8); The control cabin is provided with an in-station sound and light alarm; The prefabricated cabin is equipped with an off-site explosion-proof sound and light alarm; The combustible gas control host (1) is connected to the sound and light alarm inside the station and the explosion-proof sound and light alarm outside the station respectively.

7. The prefabricated energy storage cabin according to claim 6, characterized in that: The control cabin is also provided with an emergency start-stop switch (22); The fire control host (2) is connected to the emergency start-stop switch (22).

8. The prefabricated energy storage cabin according to claim 1, characterized in that: A dehumidifying air conditioner (17) is provided in the control cabin.

9. The prefabricated energy storage cabin according to claim 8, characterized in that: A pressure relief device (11) is provided on the side wall of the battery compartment, the pressure relief device (11) comprising a valve body, an opening and closing plate and a magnetic sheet; an air hole is provided on the side wall of the battery compartment; the valve body is mounted on the side wall of the battery compartment and covers the air hole; the opening and closing plate is rotatably mounted on the valve body via a movable part; the magnetic sheet is mounted on the valve body; and the opening and closing plate is tightly attached to the valve body via the magnetic sheet.

10. The prefabricated energy storage cabin according to claim 9, characterized in that: The side walls of the control cabin are provided with air inlet and outlet louvers (13) and an air outlet (18).

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