A prefabricated cabin type lead-carbon energy storage system

Abstract

This invention belongs to the field of energy storage technology, and specifically provides a prefabricated cabin-type lead-carbon energy storage system. The system includes a cabin and a thermal management unit. The cabin includes an electrical compartment and battery cell compartments symmetrically arranged at both ends. Hinged doors are provided on the walls of both the electrical compartment and the battery cell compartment. The thermal management unit includes a fan and ductwork. The ductwork includes an inlet duct and a return duct. One end of the inlet duct and the return duct are connected to the outlet and inlet of the fan, respectively, and the other end is arranged along the length of the battery cell compartment and located at the top of the battery cell compartment. This lead-carbon energy storage system not only has a compact and stable structure, which is beneficial for the overall hoisting and transportation of the entire cabin, but also solves the problem of severe wind pressure loss caused by long-distance transportation in existing systems, thus possessing certain market value and economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of energy storage technology, and in particular relates to a prefabricated cabin-type lead-carbon energy storage system. Background Technology

[0002] For energy storage systems, good thermal management can keep the battery in the best working environment, which greatly helps the battery's consistency, charge and discharge efficiency and lifespan.

[0003] For lead-carbon energy storage systems, compared with liquid cooling, air cooling has advantages such as low cost, low energy consumption, and simple installation and maintenance. By utilizing the fluidity of airflow, harmful substances such as hydrogen and acid mist generated during the operation of lead-carbon batteries can be dispersed in time to prevent them from accumulating, thereby reducing the risk of accidents in the energy storage system.

[0004] Currently, traditional prefabricated cabin-type energy storage systems typically consist of a cabin and a thermal management unit. The cabin has a two-compartment structure: an electrical compartment and a battery cell compartment. The electrical compartment houses electrical control equipment, while the battery cell compartment houses the energy storage cells. The thermal management unit is located outside the battery cell compartment and delivers cool air to the top of the compartment via ductwork, using diffusion to cool the battery pack. However, in practical use, this type of energy storage system has significant drawbacks: First, the air supply duct is too long, resulting in significant losses in air pressure, velocity, and volume from one end of the battery cell compartment to the other, causing substantial differences in air pressure, velocity, and volume between the air outlets near and away from the air conditioning unit. Second, there is no return air duct, and the densely packed batteries inside the cabin create high resistance to airflow circulation, easily leading to heat accumulation and localized high temperatures in the battery pack, affecting the lifespan of the battery pack and the system.

[0005] To address the aforementioned issues, this proposal presents a novel prefabricated capsule-type lead-carbon energy storage system. Summary of the Invention

[0006] The purpose of this invention is to provide a prefabricated cabin-type lead-carbon energy storage system, which solves the shortcomings of existing energy storage systems by synchronously adjusting the cabin space layout structure and the air outlet structure of the thermal management unit.

[0007] This solution provides a prefabricated capsule-type lead-carbon energy storage system, including: The cabin includes an electrical compartment and battery cell compartments symmetrically arranged at both ends thereof, and each of the electrical compartment and battery cell compartment has a swing door on its bulkhead; A thermal management unit includes a fan and ductwork, wherein the ductwork includes an inlet duct and a return duct, one end of which is connected to the outlet and inlet of the fan, respectively, and the other end is arranged along the length of the battery cell compartment and located on the top of the battery cell compartment.

[0008] As the preferred embodiment of this application: The air inlet duct includes a main air duct and downward branch ducts. The downward branch ducts include multiple ducts, which are respectively located at the bottom of the main air duct along its length and extend to one side of each battery cell integration rack in the battery cell compartment. At the same time, at least one side of each downward branch duct is provided with multiple air outlets corresponding to the spatial positions of each layer of battery pack on the battery cell integration rack.

[0009] As the preferred embodiment of this application: Each of the multiple air outlets is equipped with an airflow adjustment plate, which can be used to adjust the opening size of the corresponding air outlet and thus adjust the airflow required by the current battery pack as needed.

[0010] As the preferred embodiment of this application: The air volume regulating plate is any one of "L", "concave" or "return" type. The air volume regulating plate is provided with a U-shaped groove. The air volume regulating plate can be fixed on the lower branch pipe by fitting the positioning pin with the U-shaped groove. Under the action of external force, the U-shaped groove can be driven to move up and down relative to the positioning pin, thereby adjusting the opening of the air outlet.

[0011] As the preferred embodiment of this application: The return air duct and the inlet air duct are arranged side by side in the horizontal direction, and a mesh return air inlet is provided on the return air duct along its length.

[0012] As the preferred embodiment of this application: The battery compartment is provided with two sets of battery cell support units arranged back-to-back along its width direction. The two sets of battery cell support units divide the battery compartment into two battery cell arrangement areas along its width direction, and the front of each battery cell support unit faces the side of the swing door.

[0013] As the preferred embodiment of this application: The battery cell compartment is equipped with two sets of thermal management units, which respectively manage the battery cell support units in the corresponding battery cell arrangement areas. At the same time, the battery cell support units and thermal management units in the battery cell compartment are arranged symmetrically, forming modular units with the same structure.

[0014] As the preferred embodiment of this application: The return air duct is located above the docking area of ​​the two sets of battery cell support units. The hot air generated by the battery cell support units can be drawn out and discharged through the return air duct.

[0015] As the preferred embodiment of this application: The battery cell compartment is equipped with a battery cell output interface, which is connected to the electrical management equipment in the electrical compartment via a wire, and the wire is arranged along the inner wall of the electrical compartment.

[0016] As the preferred embodiment of this application: The battery compartments located at both ends of the electrical compartment are of the same size, and this arrangement is used to concentrate the center of gravity of the compartment in the electrical compartment area in the middle of the compartment.

[0017] Compared with existing technologies, the advantages of this application are: This solution integrates improvements to the cabin structure and optimization of the thermal management unit in a coordinated design. The two are mutually compatible and supportive, jointly enhancing the overall performance of the energy storage system. This is specifically reflected in the following aspects: (1) Structural layout lays the foundation for improving thermal management efficiency: By adopting a symmetrical three-section layout with the battery cell compartment and the battery cell compartment symmetrically arranged at both ends of the electrical compartment, the length of a single battery cell compartment is significantly shortened. At the same time, the balance and compactness of the compartment structure are also improved. This structural improvement directly creates favorable conditions for the duct layout of the thermal management unit, which greatly reduces the duct length and reduces the wind pressure loss and air supply difference from the source.

[0018] (2) Thermal management optimization further releases the potential of structural improvement: Based on the shortened battery compartment, the thermal management unit includes an inlet air duct and an outlet air duct, which together with the fan form an efficient internal airflow circulation channel. This adaptability design makes the reduced wind pressure loss due to the shortened compartment length effectively transformed into a smaller wind speed difference, wind pressure difference and air volume difference between the near end and far end of the air duct, thereby converting the advantage of "compact structure" into the actual effect of "consistent temperature control".

[0019] (3) The two work together to improve the overall performance of the system: The optimization of the cabin structure solves the problems of unstable center of gravity and long length of the existing two-cabin walk-in structure, while the adaptation design of the thermal management unit solves the problems of inconsistent temperature control and airflow loss. The combination of the two not only ensures the stability and balance of the cabin during hoisting and transportation, but also ensures the uniformity of temperature control of the battery cells in the cabin during operation. This combination of structural innovation and thermal management innovation overcomes the two major shortcomings of unstable center of gravity and excessive temperature difference in the traditional solution, and achieves a dual improvement in system stability and system performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the prefabricated cabin-type lead-carbon energy storage system provided by the present invention.

[0021] Figure 2 This is a top view structural diagram of the prefabricated cabin-type lead-carbon energy storage system provided by the present invention.

[0022] Figure 3 This is a schematic diagram of an installation structure of the downward branch pipe of the thermal management mechanism provided by the present invention in a prefabricated lead-carbon energy storage system.

[0023] Figure 4 This is a schematic diagram of another installation structure of the downward branch pipe of the thermal management mechanism provided by the present invention in a prefabricated lead-carbon energy storage system.

[0024] Figure 5 This is a front view schematic diagram of the thermal management mechanism provided by the present invention.

[0025] Figure 6 Provided by the present invention Figure 5 A magnified view of a portion of point B in the middle.

[0026] Figure 7 This is a bottom view of the thermal management mechanism provided by the present invention.

[0027] Figure Labels

[0028] 11-Battery cell compartment A; 12-Battery cell compartment B; 13-Electrical compartment; 14-Hinged door; 15-Battery cell integration rack; 16-Return air gap; 171-Main air duct; 172-Lower branch pipe; 173-Air outlet; 18-Return air duct; 181-Return air outlet; 19-Fan; 20-Compartment panel; 21-Lifting mechanism; 22-Air volume regulating plate; 23-Positioning pin; 24-U-shaped groove. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0030] Example 1:

[0031] This embodiment provides a prefabricated cabin-type lead-carbon energy storage system, including a prefabricated cabin body and a thermal management unit. The cabin body includes an electrical compartment 13 and battery cell compartments A11 and B12 located at its two ends. Hinged doors 14 are respectively provided on the walls of the electrical compartment 13 and the battery cell compartments. Installation and maintenance operations can be performed by opening and closing the corresponding hinged doors 14. In this embodiment, the hinged doors 14 are existing door structures that rotate and open / close around a hinge axis. The thermal management unit is respectively located in the battery cell compartments. The thermal management unit, located on and adapted to A11 and the battery compartment B12, manages the temperature within the battery compartment. It includes a fan 19 and ductwork. The fan 19 is fixed outside the battery compartment. The ductwork comprises a horizontally or vertically arranged inlet and outlet air ducts 18. One end of each duct is connected to the positive and negative pressure ports of the fan 19, respectively, and the other ends are arranged along the length of the battery compartment and located at the top of the battery compartment. In other words, the ductwork is laid along the length of the battery cells and located above the battery compartment. Figure 2-3 As shown.

[0032] This embodiment improves the internal cavity space structure of the cabin, such as... Figure 1 As shown, the improved cabin is a symmetrical three-section structure with the battery cell compartments 11 and 12 symmetrically arranged at both ends of the electrical compartment 13. This design significantly shortens the length of the battery cell compartments on one side, eliminates the spatial redundancy of the overall cabin structure, and thus improves the compactness of the cabin structure. At the same time, compared with the existing two-section design, this design eliminates the imbalance of the cabin structure by concentrating the center of gravity in the central electrical compartment 13 area, significantly improving the stability of the cabin structure's center of gravity and facilitating the subsequent overall hoisting and transportation of the cabin. In addition, this design also creates favorable conditions for the ductwork layout of the thermal management unit, mainly reflected in: significantly reducing the layout length and transmission path of the ductwork in the thermal management unit, which not only effectively reduces the ductwork layout cost, but also reduces the wind pressure loss and air supply difference from the source, improving the thermal management efficiency. At the same time, it avoids the problem of large temperature difference between the end of the ductwork near the positive pressure port of the fan and the end far from the positive pressure port of the fan, effectively improving the uniformity of the battery cell temperature control in the cabin.

[0033] In this embodiment, the air duct of the thermal management unit includes an air inlet duct and an air return duct 18. Based on the shortened battery cell compartment, not only is the length of the air inlet duct and air return duct laid on the top of the battery cell compartment effectively reduced, but also an efficient airflow circulation channel is formed through the air inlet duct and air return duct 18. This adaptive design makes the reduced wind pressure loss due to the shortened compartment length effectively transformed into a smaller wind speed difference, wind pressure difference and air volume difference between the near end and far end of the air duct, thereby converting the advantage of "compact structure" into the actual effect of "consistent temperature control".

[0034] During assembly, cell integration racks 15 for placing battery packs are installed in cell compartments A11 and B12, respectively. These cell integration racks 15 and the battery packs constitute cell support units. At the same time, air inlet pipes and air return pipes are installed at the upper ends of cell compartments A11 and B12, respectively, ensuring that the air inlet pipes and air return pipes are connected to the positive pressure port and negative pressure port of the fan, respectively. During use, the airflow circulation channel formed by the air inlet pipes and air return pipes provides circulating cooling airflow to the corresponding cell compartments. It can be understood that since the length of the cell compartment is shortened, the length of the air inlet pipes and air return pipes installed within it will also be shortened. This not only saves on the cost of duct installation, but also avoids the phenomenon that the airflow, air velocity, and air pressure are significantly reduced when the duct is far from the fan compared to the one closer to the fan, which leads to inconsistent temperatures at the front and back of the cell compartment. In other words, this embodiment effectively improves the uniformity of cell temperature control in the compartment by reducing the transmission path of the ducts.

[0035] As can be seen, this embodiment solves the problems of unstable center of gravity and non-compact structure in existing two-compartment walk-in structures by optimizing the cabin structure. The adaptation design of the thermal management unit solves the problems of inconsistent temperature control and airflow loss. The combination of the two not only ensures the stability and balance of the cabin during hoisting and transportation, but also ensures the uniformity of temperature control of the battery cells inside the cabin during operation. This combination of structural innovation and thermal management innovation overcomes the two major shortcomings of the traditional solution: unstable center of gravity and excessive temperature difference, and achieves a dual improvement in system stability and system performance.

[0036] In addition, it should be noted that this embodiment is not a simple superposition of structural improvement and thermal management optimization, but rather a systematic design that treats the two as a whole. The improvement of the cabin structure provides a better physical structure for thermal management deployment, while the thermal management optimization makes full use of the advantages of this structure. Ultimately, the energy storage system is effectively improved in terms of structural reliability, temperature control uniformity, and cost control. Therefore, it has certain market value and economic benefits.

[0037] In a preferred embodiment, the air inlet duct includes a main air duct 171 and downward branch ducts 172. The main air duct 171 is horizontally arranged, and the downward branch ducts 172 include multiple ducts, each located at the bottom of the main air duct 171 along its length and extending to one side of the battery cell integration rack 15 inside the battery cell compartment. Simultaneously, at least one side of each downward branch duct 172 is provided with multiple air outlets 173 corresponding to the spatial positions of the battery pack layers on the battery cell integration rack 15. Preferably, in this embodiment, each air outlet 173 is designed to face and directly confront the battery pack. Figure 3-4 As can be understood, the location of the air outlet 173 is determined by the side of the lower branch pipe 172 and its position within the battery cell compartment. When the lower branch pipe 172 is located at the end of the battery cell compartment, only one side of it faces the battery cell integration rack 15. Therefore, the air outlet 173 is only located on the side facing the battery cell integration rack 15. When the lower branch pipe 172 is located between two adjacent battery cell integration racks 15, both sides of the lower branch pipe 172 face the battery cell integration rack 15. Air outlets 173 are respectively opened on both sides facing the cell integration frame 15, and the air outlets 173 on both sides are symmetrically arranged; of course, in this embodiment, even if the downward branch pipe 172 is located between two cell integration frames 15, if the downward branch pipe 172 only needs to provide airflow to one set of cell integration brackets 15, then the air outlet 173 is only provided on the side of the downward branch pipe 172 facing the corresponding cell integration frame 15; in this embodiment, the air outlet 173 is a through hole opened on the downward branch pipe 172.

[0038] In this embodiment, multiple sets of downward branch pipes 172 are provided on the main air duct 171. The multiple sets of downward branch pipes 172 are arranged at a certain interval, and the distance between two adjacent downward branch pipes 172 is equal to the width of at least one battery cell integration frame 15.

[0039] Specifically, when the distance between two adjacent downward probes 172 is equal to the width of a cell integration frame 15, then each downward probe 172 corresponds to one cell integration frame 15, such as... Figure 3 As shown (arrows indicate airflow direction), each downward branch pipe 172 has an air outlet 173 on the side facing the cell integration frame 15. In use, the air outlet 173 of each downward branch pipe 172 provides cooling airflow to each battery pack on the corresponding cell integration frame 15. The cooling airflow penetrates the battery pack on the cell integration frame 15 for heat exchange. The airflow that has completed heat exchange rises through the gap between the two cell integration frames 15 to the return air pipe, and then enters the fan through the return air pipe to achieve internal circulation.

[0040] When the distance between two adjacent downward branch pipes 172 is equal to the width of the two cell integration frames 15, air outlets 173 are provided on both sides of the downward branch pipe 172 located between the two cell integration frames 15 to provide cooling airflow to each battery pack on the facing cell integration frame 15, such as Figure 4 As shown (arrows indicate airflow direction), the cooling airflow penetrates the battery packs on their respective cell integration frames 15 and converges between the two cell integration frames 15. The converged hot airflow flows upward through the gap between the two cell integration frames 15 and then enters the fan through the return air duct to achieve internal circulation.

[0041] As can be seen, by deploying the downward branch pipe 172, this embodiment can provide targeted cooling airflow to each battery pack, further improving the uniformity of thermal management and ensuring better uniformity and consistency of cell thermal management.

[0042] The above describes the preferred positional relationship between the two downward-probing branch pipes 172 and the battery cell integration frame 15, as well as the arrangement structure of the air outlet 173 in this embodiment. Under the guidance of this embodiment, other feasible and reasonable arrangement schemes are also within the protection scope of this embodiment. The reason why the above two schemes are preferred in this embodiment is that the width of a single battery cell integration frame 15 is usually around 1m. In this embodiment, the airflow velocity from the air outlet 173 is around 1.6m / s. Therefore, effective cooling can be achieved by using one set of downward-probing branch pipes 172. If two sets of downward-probing branch pipes 172 are used to provide airflow to a battery cell integration frame 15 at the same time, it will not only increase the cost of use, but also cause the airflow to interact with each other, which will affect the cooling effect.

[0043] In this embodiment, in order to improve the stability of air intake, it is preferable to use a chamfered treatment at the connection between the downward branch pipe 172 and the main air pipe 171. In addition, the dimensions of the main air pipe 171 and the downward branch pipe 172 can be selected according to the actual air volume requirements, and this embodiment does not make specific limitations.

[0044] As a preferred embodiment, in order to flexibly adjust the air volume of each air outlet 173 as needed to ensure the stability of airflow in the upper and lower positions of the battery cell compartment, this embodiment preferably has the same diameter for each air outlet 173, and provides an air volume adjustment plate 22 at each of the multiple air outlets 173. The opening size of the corresponding air outlet 173 can be adjusted by the air volume adjustment plate 22, thereby adjusting the air volume required by the current battery pack as needed. It is understood that the air volume adjustment plate 22 can be manually adjusted or automatically adjusted by adding a wind pressure monitoring unit. In order to save costs, this embodiment preferably determines the required opening size by manually adjusting it multiple times before use.

[0045] like Figure 6 The diagram shows the arrangement of the airflow regulating plate 22 on the lower branch pipe 172 provided in this embodiment. The airflow regulating plate 22 is any one of "L", "concave" or "return" type, that is, at least one ear plate is provided on the airflow regulating plate 22 to be limited and locked with the lower branch pipe 172. The airflow regulating plate 22 is provided with a U-shaped groove 24. The airflow regulating plate 22 can be fixed on the lower branch pipe 172 by the matching of the positioning pin 23 with the U-shaped groove 24. Under the action of external force, the U-shaped groove 24 can be driven to move up and down relative to the positioning pin 23 to adjust the opening of the air outlet 173. In this embodiment, the positioning pin 23 can be fixed at the air outlet 173 of the lower branch pipe 172.

[0046] In practical use, the position of the air volume adjustment plate 22 at each air outlet 173 can be manually adjusted to determine the final air volume of each air outlet 173. This structure allows for flexible adjustment of the opening of the air outlet 173 to meet the required air volume and achieve balanced temperature adjustment inside the battery compartment. On the other hand, it can achieve targeted temperature control in certain areas. For example, the air outlet 173 in non-essential areas can be closed by the air volume adjustment plate 22, while the air outlet 173 in necessary areas can be adjusted to the required opening by the air volume adjustment plate 22.

[0047] In a preferred embodiment, the return air duct 18 and the inlet air duct are arranged side by side in the horizontal direction, and a mesh return air inlet 181 is provided on the return air duct 18 along its length direction, such as... Figure 7 As shown, the mesh return air inlet 181 can be specifically composed of an opening on the return air duct 18 and an isolation mesh. The isolation mesh is welded or screwed to the opening. It is understood that the mesh size of the isolation mesh can be selected according to actual needs. This embodiment does not make a specific limitation again, with the aim of achieving effective hot air recovery and preventing foreign objects from falling into the return air duct 18; or the mesh return air inlet 181 can be composed of multiple micro-holes opened at the bottom of the return air duct 18.

[0048] As a preferred embodiment, the battery compartment is provided with two sets of battery support units arranged back-to-back along its width. These two sets of battery support units divide the battery compartment into two battery cell arrangement areas along its width, forming a non-walk-in compartment. The front of each battery support unit faces the side of the swing door 14. This arrangement is equivalent to further dividing the battery compartment, thus forming four modular units with the same structure. This makes the compartment symmetrical in all directions. This design not only stabilizes the center of gravity and facilitates the overall hoisting and transportation of the compartment, but also provides the possibility for the standardized prefabrication of the subsequent battery cell integration support 15 and thermal management unit. It is conducive to modular installation, commissioning and maintenance, and improves the convenience of energy storage compartment installation and maintenance. In addition, it has the potential for capacity expansion. After standardization and modular prefabrication, the modular units can be replicated in batches as needed for capacity expansion without making major modifications to the overall structure of the compartment. This adapts to the needs of different energy storage scenarios, and the symmetry and stability of the entire compartment structure can still be guaranteed after expansion.

[0049] like Figure 3 As shown, each group of battery cell support units includes multiple battery cell integration racks 15. In this embodiment, it is preferred to include 3-5 racks. These 3-5 battery cell integration racks 15 are arranged along the length of the battery cell compartment. At the same time, there are multiple sets of swing doors 14, that is, multiple swing doors 14 can be opened on both sides of each battery cell compartment. Each swing door 14 faces the front of each battery cell integration rack 15. After the swing door 14 is opened, forklifts can be used directly to install and maintain the battery integration racks, as well as to install and maintain the battery clusters, without having to enter the battery cell compartment.

[0050] In this embodiment, a return air gap 16 is reserved between the two sets of cell support units, between adjacent two cell integration frames 15, and between adjacent battery packs for airflow. In this embodiment, the return air gap 16 is preferably used as an airflow cavity to transport the hot airflow generated by the battery clusters on the two sets of cell support units to the top of the cabin, and to promote airflow circulation in the cabin in conjunction with the thermal management mechanism.

[0051] As a preferred embodiment, in order to improve thermal management efficiency, it is preferable that two sets of thermal management units are provided in the battery cell compartment, that is, two sets of thermal management units are provided in both battery cell compartment A11 and battery cell compartment B12. The two sets of thermal management units manage the battery cell support units in the corresponding battery cell arrangement area, so as to achieve a one-to-one correspondence between the thermal management unit and the battery cell support unit, so as to achieve the purpose of thermal management of the two sets of battery cell support units respectively. At the same time, the battery cell support units and thermal management units in the battery cell compartment are symmetrically arranged, forming a modular unit with the same structure. This design can realize modular management and significantly improve the thermal management efficiency in the compartment.

[0052] Specifically, in this embodiment, the cell support units and thermal management units in cell compartments A11 and B12 are symmetrically arranged, forming four modular units with identical structures. This design not only stabilizes the center of gravity and facilitates subsequent hoisting and transportation, but also provides the possibility for standardized prefabrication of subsequent cell support units and thermal management units, which is conducive to modular installation, commissioning and maintenance, and improves the convenience of energy storage compartment installation and maintenance. In addition, it has the potential for capacity expansion. After standardization and modular prefabrication, the modular units can be replicated in batches as needed for capacity expansion without making significant modifications to the overall structure of the compartment, adapting to the needs of different energy storage scenarios, and ensuring the symmetry and stability of the entire compartment structure after expansion.

[0053] As a preferred embodiment, the return air duct 18 is located above the docking area of ​​the two sets of battery cell support units. This is particularly true when two sets of battery cell support units and two sets of thermal management units are symmetrically arranged within the battery cell compartment. The return air ducts 18 of the two sets of thermal management units are horizontally aligned and located above the docking area of ​​the two sets of battery cell support units. Figure 2 As shown, the hot air generated by the battery cell support unit can be drawn out through the return air duct 18 and the return air inlet 181 provided thereon, and then cooled again by the fan 19 (which can be fixed on the swing door 14), so as to realize the internal circulation of airflow in the battery cell compartment.

[0054] As a preferred embodiment, the battery compartments at both ends of the electrical compartment 13 are the same size. This arrangement structure is used to place the center of gravity of the compartment in the electrical compartment 13 area. That is, in this embodiment, the battery compartment A11 and the battery compartment B12 are the same size. The center of gravity of the improved non-walk-in compartment is located in the middle electrical compartment 13 area. This makes the overall center of gravity of the compartment stable and will not deform due to instability of the center of gravity, as is the case with two compartment structures where one end is heavier than the other. At the same time, it is also beneficial for the overall hoisting and transportation of the entire compartment.

[0055] As a preferred embodiment, for the convenience of subsequent transportation and maintenance, a hoisting structure 21 is provided at the bottom of the energy storage compartment body. The hoisting structure 21 is any one or more combinations of hooks, rings or rods. The hoisting structure 21 includes multiple sets, which are equidistantly and symmetrically arranged on the base of the energy storage compartment body 10.

[0056] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions has not been elaborated upon here. It should be noted that those skilled in the art can make various modifications without departing from the present invention, and these modifications should also be considered within the scope of protection of the present invention. These modifications will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of the claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A prefabricated cabin type lead-carbon energy storage system, characterized in that, The cabin body comprises an electrical cabin and battery cabin symmetrically arranged at both ends thereof, and flat doors are arranged on the cabin walls of the electrical cabin and battery cabin respectively. The thermal management unit comprises a fan and an air duct, wherein the air duct comprises an air inlet duct and an air return duct, one end of the air inlet duct and the air return duct is communicated with the positive pressure port and the negative pressure port of the fan respectively, and the other end of the air inlet duct and the air return duct is arranged along the length direction of the battery cabin and located at the top of the battery cabin respectively.

2. The prefabricated cabin type lead-carbon energy storage system according to claim 1, wherein: The air inlet duct comprises a main air duct and a plurality of probe branch pipes, the probe branch pipes are arranged at the bottom of the main air duct along the length direction of the main air duct and extend to one side of each battery integrated frame in the battery cabin, and a plurality of air outlets corresponding to the space positions of each layer of battery pack on the battery integrated frame are arranged on at least one side of each probe branch pipe.

3. The prefabricated cabin type lead-carbon energy storage system according to claim 2, wherein: A plurality of air volume adjusting plates are arranged at the air outlets respectively, the opening size of the corresponding air outlet can be adjusted through the air volume adjusting plate, and the required air volume of the current battery pack can be adjusted as needed.

4. The prefabricated cabin type lead-carbon energy storage system according to claim 3, wherein: The air volume adjusting plate is any one of "L" type, "concave" type or "return" type, a U-shaped hole groove is arranged on the air volume adjusting plate, the air volume adjusting plate can be fixed on the probe branch pipe by adapting the U-shaped hole groove with the positioning pin, and the opening size of the air outlet can be adjusted by driving the U-shaped hole groove to move up and down relative to the positioning pin under external force.

5. The prefabricated cabin type lead-carbon energy storage system according to claim 1, wherein: The air return duct is arranged horizontally parallel to the air inlet duct, and a mesh air return port is arranged on the air return duct along the length direction thereof.

6. The prefabricated cabin type lead-carbon energy storage system according to claim 1, wherein: Two groups of battery support units arranged in a back-to-back manner are arranged in the battery cabin along the width direction thereof, the two groups of battery support units divide the battery cabin into two battery arrangement areas along the width direction, and the front surface of each battery support unit faces the side of the flat door.

7. The prefabricated cabin type lead-carbon energy storage system according to claim 6, wherein: Two groups of thermal management units are arranged in the battery cabin, the two groups of thermal management units manage the battery support units in the corresponding battery arrangement area respectively, and the battery support units and the thermal management units in the battery cabin are arranged symmetrically, thereby forming modular units with the same structure.

8. The prefabricated cabin type lead-carbon energy storage system according to claim 6, wherein: The air return duct is located above the butt joint area of the two groups of battery support units, and the hot air generated by the battery support units can be sucked out and discharged through the air return duct.

9. The prefabricated cabin type lead-carbon energy storage system according to claim 1, comprising: A battery output interface is arranged in the battery cabin, the battery output interface is connected with the electrical management equipment in the electrical cabin through a wire, and the wire is arranged along the inner wall of the electrical cabin. ​ 10. The prefabricated cabin-type lead-carbon energy storage system according to claim 1, characterized in that: The battery compartments located at both ends of the electrical compartment are of the same size, and this arrangement is used to concentrate the center of gravity of the compartment in the electrical compartment area in the middle of the compartment.

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