215kWh liquid cooling energy storage device

Abstract

The utility model particularly relates to a 215kWh liquid cooling energy storage device which comprises a battery module, a power distribution control module, a liquid cooling unit and a cabinet body, the battery module is respectively connected with the power distribution control module and the liquid cooling unit, and the battery module, the power distribution control module and the liquid cooling unit are arranged in a battery cabin, a power distribution control cabin and a liquid cooling cabin in the cabinet body in a one-to-one correspondence mode. The cabinet body is provided with a front door and a rear door, and a connecting line for connecting the battery module with the power distribution control module and a liquid cooling pipeline connected with the liquid cooling unit are arranged near the front door; and a battery pack of the battery module is arranged close to the rear door. By means of the arrangement, when the battery module breaks down and needs to be maintained, a maintainer can open the rear door to install, replace and maintain the battery module after dismantling the liquid cooling pipeline, the power line and the communication line of the corresponding part of the front door, the whole energy storage cabinet does not need to be dismantled, and the integration and flexibility of the module are improved; the maintenance time is shortened; and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a 215kWh liquid-cooled energy storage device. Background Technology

[0002] With the continuous evolution of energy storage technology, energy storage cabinet modules have gradually become an important application form in the energy storage field. Traditional energy storage cabinet modules face many challenges in terms of design and layout. For example, in some early energy storage cabinet designs, the connection layout between the internal module components was rather chaotic, and the connection lines and pipes between the battery modules and the power distribution control module and liquid cooling unit lacked reasonable planning. This not only led to inconvenience in installation and maintenance, increasing labor and time costs, but also, due to the messy arrangement of lines and pipes, easily caused safety hazards such as signal interference and coolant leakage, affecting the reliability and stability of the energy storage module. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and provide a 215kWh liquid-cooled energy storage device, including a battery module, a power distribution control module, a liquid cooling unit, and a cabinet. The battery module is connected to the power distribution control module and the liquid cooling unit respectively. The cabinet is provided with a battery compartment, a power distribution control compartment, and a liquid cooling compartment. The battery module, the power distribution control module, and the liquid cooling unit are respectively arranged in the battery compartment, the power distribution control compartment, and the liquid cooling compartment. The cabinet is provided with a front door and a rear door. The connecting lines between the battery module and the power distribution control module and the liquid cooling pipes connected to the liquid cooling unit are located near the front door; and the battery pack of the battery module is located near the rear door.

[0004] Preferably, the battery module includes multiple battery packs connected in series, each battery pack including multiple battery cells and a BMU battery management unit connected in series, and the total capacity of the battery module is 215kWh.

[0005] Preferably, the number of the plurality of battery packs is five, and the battery packs are assembled with 1P48S cells, and the cell assembly is 48 series of 280Ah lithium iron phosphate cells.

[0006] Preferably, the five battery packs are arranged in a certain order in the battery compartment, and the battery compartment is provided with a baffle for separating any two battery packs.

[0007] Preferably, the system includes a dehumidifier, which is connected to a power distribution control module.

[0008] Preferably, the system includes a fire protection module assembly, which includes an explosion-proof fan, an audible and visual alarm, an aerosol fire extinguishing device, a temperature sensor, and a smoke sensor. The explosion-proof fan, audible and visual alarm, aerosol fire extinguishing device, temperature sensor, and smoke sensor are all connected to the power distribution control module.

[0009] Preferably, the surface of the liquid cooling pipe is provided with a protective layer, and the connection of the liquid cooling pipe is provided with a seal, and the liquid cooling pipe is made of a corrosion-resistant and high-strength material.

[0010] Preferably, the power distribution control module includes a BCMU battery control module and an energy storage converter module.

[0011] Preferably, the power distribution control module includes a surge protection module.

[0012] The beneficial effects of this utility model are as follows: When a battery module malfunctions and requires repair, maintenance personnel can open the rear door to install, replace, and maintain the battery module after removing the corresponding liquid cooling pipes, power lines, and communication lines from the front door. This eliminates the need to disassemble the entire energy storage cabinet, improving the module's integration and flexibility, shortening maintenance time, and reducing maintenance costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0016] Figure 3 This is a schematic diagram of the principle of this utility model;

[0017] In the diagram, 1-Uninterruptible power supply, 2-Cooling fan, 3-Dehumidifier, 4-Explosion-proof fan, 5-Indicator light bar, 6-Emergency stop switch, 7-EMU display and control, 8-Battery pack, 9-Liquid cooling unit, 10-Liquid cooling pipe, 11-Power distribution control module, 12-Energy storage converter module, 13-Audible and visual alarm, 14-Lighting lamp, 15-Aerosol fire extinguishing device, 16-Temperature sensor, 17-Smoke sensor, 18-High-voltage box. Detailed Implementation

[0018] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0019] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0020] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0021] like Figures 1 to 3 As shown in the embodiment of this utility model, this embodiment includes a battery module, a power distribution control module 11, a liquid cooling unit 9, and a cabinet. The battery module is connected to the power distribution control module 11 and the liquid cooling unit 9 respectively. The cabinet is provided with a battery compartment, a power distribution control compartment, and a liquid cooling compartment. The battery module, the power distribution control module 11, and the liquid cooling unit 9 are respectively arranged in the battery compartment, the power distribution control compartment, and the liquid cooling compartment. The cabinet is provided with a front door and a rear door. The connecting line between the battery module and the power distribution control module 11 and the liquid cooling pipe 10 connected to the liquid cooling unit 9 are located near the front door; and the battery pack 8 of the battery module is located near the rear door.

[0022] Understandably, by placing the battery module, power distribution control module 11, and liquid cooling unit 9 in different compartments inside the cabinet, and by cleverly planning the connection lines between the battery module and the power distribution control module 11, as well as the liquid cooling pipes 10 connected to the liquid cooling unit 9, all located near the front door, the internal space utilization efficiency of the cabinet is optimized. This results in a compact and orderly layout of the components, reducing unnecessary space waste and helping to reduce the overall size of the energy storage cabinet. Consequently, it can more flexibly adapt to the space constraints of different installation sites, making it easier to deploy and install in indoor power distribution rooms, energy storage power station equipment rooms, or in some outdoor containerized energy storage application scenarios.

[0023] The connecting cables and liquid cooling pipes are centrally located near the front door, facilitating wiring and piping connections, as well as subsequent inspection, maintenance, and replacement work from the front of the cabinet. Technicians no longer need to perform complex wiring and piping operations within the confined space of the cabinet, effectively shortening installation and maintenance time, reducing labor costs, improving overall work efficiency, and enabling more precise location and handling of potential wiring or piping problems during maintenance, minimizing the impact of maintenance operations on the normal operation of the entire energy storage module.

[0024] The rational layout of the liquid cooling unit 9 and the battery module, along with the dedicated liquid cooling pipeline 10, enables efficient thermal management. The liquid cooling module can precisely adjust the flow rate and temperature of the coolant according to the real-time temperature of the battery module, quickly removing the heat generated during charging and discharging, effectively maintaining the battery within a suitable temperature range. This not only significantly improves battery lifespan and reduces battery performance degradation and aging caused by high temperatures, but also greatly reduces the risk of battery thermal runaway, ensuring the safety and stability of the energy storage module and laying a solid foundation for its long-term reliable operation.

[0025] This layout and connection method helps reduce electromagnetic interference and signal transmission loss. The rational planning of the connecting lines avoids unnecessary entanglement and crossing with other components, reducing the possibility of electromagnetic coupling. This makes the signal transmission between the power distribution control module 11 and the battery module more stable and accurate, improving the precision and reliability of the energy storage cabinet module's control over battery charging and discharging. Ultimately, this enhances the overall energy conversion efficiency and energy storage performance of the energy storage module, enabling it to play a more precise role in applications such as grid peak shaving and valley filling, and renewable energy grid-connected energy storage, providing strong support for the efficient storage and utilization of energy.

[0026] The battery module includes multiple battery packs 8 connected in series, each battery pack 8 including multiple battery cells and a BMU battery management unit connected in series, and the total capacity of the battery module is 215kWh.

[0027] The number of the plurality of battery packs 8 is five, and the battery packs 8 are assembled with 1P48S cells, and the cell assembly is 48 strings of 280Ah lithium iron phosphate cells.

[0028] The five battery packs 8 are arranged in a certain order in the battery compartment, and the battery compartment is provided with a baffle for separating any two battery packs 8.

[0029] Understandably, setting up baffles to separate any two battery packs 8 can effectively prevent chain reactions between battery packs 8 due to unexpected situations (such as thermal runaway, short circuits, or other faults in one battery pack 8). If a battery pack 8 malfunctions, the baffles can act as physical isolation, preventing heat, flames, or electrical faults from rapidly spreading to adjacent battery packs 8, thus minimizing the scope of the fault and significantly reducing the risk of catastrophic consequences from a localized failure in the entire battery module. This significantly improves the safety of the battery compartment and even the entire energy storage cabinet module; at the same time, each battery pack 8 can be replaced individually, facilitating maintenance.

[0030] The system includes a dehumidifier 3, which is connected to the power distribution control module 11. The dehumidifier 3 uses a semiconductor refrigeration dehumidification method. The dehumidifier 3 draws humid air from inside the cabinet into the dehumidification duct through an internal fan, where it is condensed into water by the semiconductor refrigeration mechanism and then discharged from the cabinet through a water pipe.

[0031] Understandably, the power distribution control module 11 can monitor the humidity inside the energy storage cabinet in real time and automatically control the start and stop of the dehumidifier 3 based on the preset humidity threshold. When the humidity exceeds the set upper limit, the power distribution control module 11 quickly starts the dehumidifier 3 to remove moisture from the air in a timely manner, effectively preventing problems such as short circuits of electrical components due to moisture and corrosion and rust of metal parts caused by excessive humidity. This greatly improves the reliability and stability of the electrical equipment inside the energy storage cabinet, extends its service life, and ensures the safe and stable operation of the entire energy storage module.

[0032] The system includes a fire protection module assembly, which includes an explosion-proof fan 4, an audible and visual alarm 13, an aerosol fire extinguishing device 15, a temperature sensor 16, and a smoke sensor 17. The explosion-proof fan 4, the audible and visual alarm 13, the aerosol fire extinguishing device 15, the temperature sensor 16, and the smoke sensor 17 are all connected to the power distribution control module 11.

[0033] The surface of the liquid cooling pipe 10 is provided with a protective layer, and the connection of the liquid cooling pipe 10 is provided with a sealing element. The liquid cooling pipe 10 is made of corrosion-resistant and high-strength material.

[0034] The power distribution control module 11 includes a high-voltage box 18 and an energy storage converter module 12. The high-voltage box 18 includes a BCMU battery control module, which is connected to the BMU battery management unit and the energy storage converter module 12.

[0035] The power distribution control module 11 includes a surge protection module. It is understood that the surge protection module is common knowledge and will not be described in detail here.

[0036] It includes a cooling fan 2, which uses a motor-driven rotating impeller to force airflow circulation, transferring heat from inside the cabinet to the outside air, thereby reducing the temperature inside the cabinet.

[0037] It includes indicator light bar 5, lighting lamp 14, emergency stop switch 6 and EMU display and control 7. The EMU display and control 7 is responsible for the energy scheduling and monitoring of the energy storage cabinet. The indicator light bar 5 is connected to the EMU display and control 7 and is used to display the operation alarm fault status and the remaining SOC capacity.

[0038] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0039] Furthermore, although the operation of the method of this invention is described in a specific order in the accompanying drawings, this does not require or imply that the operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. On the contrary, the steps depicted in the flowchart can be performed in a different order. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps. It should also be noted that the features and functions of two or more devices according to this invention can be embodied in one device. Conversely, the features and functions of one device described above can be further divided and embodied by multiple devices.

[0040] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A 215 kWh liquid-cooled energy storage device comprising a battery module, a power distribution control module, a liquid-cooled unit and a cabinet, the battery module being connected with the power distribution control module and the liquid-cooled unit respectively, the cabinet being provided with a battery cabin, a power distribution control cabin and a liquid-cooled cabin, the battery module, the power distribution control module and the liquid-cooled unit being correspondingly arranged in the battery cabin, the power distribution control cabin and the liquid-cooled cabin, characterized in that: The cabinet body is provided with a front door and a rear door, the connecting line connected between the battery module and the power distribution control module and the liquid cooling pipeline connected between the battery module and the liquid cooling unit are arranged close to the front door, and the battery module is arranged close to the rear door; The battery module comprises a plurality of battery packs connected in series, each battery pack comprises a plurality of battery cells connected in series and a BMU battery management unit, and the total capacity of the battery module is 215 kWh; The number of the plurality of battery packs is five, the battery packs adopt 1P48S battery cell groups, and the battery cell groups are 48-string lithium iron phosphate 280 Ah battery cells; The five battery packs are arranged in a certain order in the battery cabin, and the battery cabin is provided with baffles for separating and placing any two battery packs.

2. The 215 kWh liquid-cooled energy storage device of claim 1, wherein: The power distribution control module is connected with a dehumidifier.

3. The 215 kWh liquid-cooled energy storage device of claim 1, wherein: The fire-fighting module assembly comprises an explosion-proof fan, an audible and visual alarm, an aerosol fire extinguishing device, a temperature sensor and a smoke sensor, and the explosion-proof fan, the audible and visual alarm, the aerosol fire extinguishing device, the temperature sensor and the smoke sensor are connected with the power distribution control module.

4. The 215 kWh liquid-cooled energy storage device of claim 1, wherein: The surface of the liquid cooling pipeline is provided with a protective layer, and the connection part of the liquid cooling pipeline is provided with a sealing element, and the liquid cooling pipeline is made of corrosion-resistant and high-strength material.

5. The 215 kWh liquid-cooled energy storage device of claim 1, wherein: The power distribution control module comprises a high-voltage box and an energy storage converter module, the high-voltage box comprises a BCMU battery control module, and the BCMU battery control module is connected with the BMU battery management unit and the energy storage converter module respectively.

6. The 215 kWh liquid-cooled energy storage device of claim 1, wherein: The power distribution control module comprises a surge protection module.

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