Lower box body of energy storage device and energy storage battery

Abstract

The embodiment of the utility model provides a lower box body of an energy storage device and an energy storage battery, and relates to the technical field of energy storage devices. The lower box body of the energy storage device comprises a first box body side plate, a second box body side plate, a first end plate cover, a second end plate cover, a box bottom side plate and a sealing rubber pad, two ends of the first box body side plate are respectively connected with one end of the first end plate cover and one end of the second end plate cover, and two ends of the second box body side plate are respectively connected with the other end of the first end plate cover and the other end of the second end plate cover; a first sealing groove position, a second sealing groove position, a third sealing groove position and a fourth sealing groove position are formed in the box bottom side plate; the first box body side plate, the second box body side plate, the first end plate cover and the second end plate cover are connected with the first sealing groove position, the second sealing groove position, the third sealing groove position and the fourth sealing groove position through sealing rubber pads respectively. A battery pack and a sealing structure are omitted, sealing protection is provided through the structure of the box body and the sealing rubber mat, and the space utilization rate of the lower box body of the energy storage device is increased.

Description

Technical Field

[0001] This application relates to the field of energy storage device technology, and in particular to a lower housing and energy storage battery for an energy storage device. Background Technology

[0002] The lower enclosure of an energy storage device is a structure used to house and protect the battery cells within the energy storage system. The lower enclosure provides structural support, thermal management, and sealing protection for the battery cells, ensuring their safe and efficient operation under various environmental conditions.

[0003] In existing technologies, multiple battery cells are typically integrated into a battery pack, which is then sealed. Finally, the sealed battery pack is installed in the lower casing of the energy storage device. The lower casing and the battery pack can simultaneously provide sealing protection for multiple battery cells, preventing external environmental factors such as moisture, dust, and temperature changes from affecting the multiple battery cells.

[0004] However, existing technologies suffer from low space utilization. When the sealed battery pack is installed into the lower casing of the energy storage device, the battery pack's outer shell and sealing structure occupy a portion of the lower casing's space. Although this design provides sealed protection for the cells, the battery pack's outer shell and sealing materials do not participate in the energy storage function, yet they occupy space, resulting in wasted space. Utility Model Content

[0005] This application provides a lower housing and energy storage battery for an energy storage device, in order to solve the problem of low space utilization in the lower housing of energy storage devices in the prior art.

[0006] In a first aspect, embodiments of this application provide a lower housing for an energy storage device, comprising: a first housing side panel, a second housing side panel, a first end plate cover, a second end plate cover, a bottom housing side panel, and a sealing gasket;

[0007] The two ends of the first box side panel are respectively connected to one end of the first end plate cover and one end of the second end plate cover, and the two ends of the second box side panel are respectively connected to the other end of the first end plate cover and the other end of the second end plate cover;

[0008] The bottom side plate of the box is provided with a first sealing groove, a second sealing groove, a third sealing groove and a fourth sealing groove;

[0009] The first box side panel, the second box side panel, the first end plate cover, and the second end plate cover are all connected to the first sealing groove, the second sealing groove, the third sealing groove, and the fourth sealing groove respectively through the sealing gasket.

[0010] In one possible design, a liquid cooling plate is provided on the bottom side panel of the box, and the two ends of the liquid cooling plate are respectively connected to the first side panel of the box and the second side panel of the box.

[0011] In one possible design, the liquid cooling plate is provided with a cooling circuit for delivering coolant to reduce the temperature of the battery cells in the lower housing of the energy storage device.

[0012] In one possible design, the lower casing of the energy storage device further includes a first pipe and a second pipe, both of which are connected to the cooling circuit via the bottom side plate of the casing. The first pipe is used to receive coolant supplied by an external device, and the second pipe is used to supply coolant from the cooling circuit to the external device. The external device is used to supply and receive coolant to reduce the temperature of the battery cells in the lower casing of the energy storage device.

[0013] In one possible design, the lower housing of the energy storage device further includes: a mounting bracket and a roller beam;

[0014] The mounting bracket is connected to the roller beam and the first end plate cover respectively, and the roller beam is connected to the bottom side plate of the box.

[0015] In one possible design, the bottom side panel of the box is provided with a first flange and a second flange, the bottom side panel of the box is connected to the first box body side panel through the first flange, and the bottom side panel of the box is connected to the second box body side panel through the second flange.

[0016] In one possible design, the lower housing of the energy storage device further includes: a first connector and a second connector;

[0017] The first connector is connected to one end of the roller beam and the first flange, and the second connector is connected to the other end of the roller beam and the second flange. Both the first connector and the second connector are used to strengthen the connection between the roller beam and the bottom side plate of the box.

[0018] In one possible design, a first limiting block is provided between the first flange and the first box side panel, and a second limiting block is provided between the second flange and the second box side panel. The first limiting block is used to enhance the connection between the first flange and the first box side panel, and the second limiting block is used to enhance the connection between the second flange and the second box side panel.

[0019] In one possible design, a first sealing groove is provided between the first flange and the first box side panel, and a second sealing groove is provided between the second flange and the second box side panel. Both the first and second sealing grooves are used to fill with sealant to enhance the connection between the first flange and the first box side panel, as well as the connection between the second flange and the second box side panel.

[0020] Secondly, embodiments of this application provide an energy storage battery, including: an upper cover, a battery cell, and a lower casing for an energy storage device as described in any one of the first aspects.

[0021] This application provides a lower casing for an energy storage device and an energy storage battery. The lower casing includes: a first casing side plate, a second casing side plate, a first end cover, a second end cover, a bottom casing side plate, and a sealing gasket. The two ends of the first casing side plate are respectively connected to one end of the first end cover and one end of the second end cover, and the two ends of the second casing side plate are respectively connected to the other ends of the first end cover and the second end cover. The bottom casing side plate is provided with a first sealing groove, a second sealing groove, a third sealing groove, and a fourth sealing groove. The first casing side plate, the second casing side plate, the first end cover, and the second end cover are all connected to the first sealing groove, the second sealing groove, the third sealing groove, and the fourth sealing groove, respectively, via the sealing gasket. The lower casing of the energy storage device in this embodiment eliminates the battery pack and sealing structure, directly utilizing the casing's own structure and the sealing gasket to provide sealing protection, thereby solving the problem of low space utilization in the prior art. By directly connecting and sealing the first box side panel, the second box side panel, the first end plate cover, the second end plate cover, and the bottom side panel, the battery cell can be sealed and protected. At the same time, unnecessary space occupation is effectively reduced, allowing more internal space to be used to accommodate the battery cell, thereby improving the overall space utilization rate of the energy storage device's lower box. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 Schematic diagram of the structure of the lower housing of the energy storage device provided in the embodiments of this application Figure 1 ;

[0024] Figure 2 Schematic diagram of the structure of the lower housing of the energy storage device provided in the embodiments of this application Figure 2 ;

[0025] Figure 3 Provided for the embodiments of this application Figure 2 A schematic diagram of the structure of part A;

[0026] Figure 4 Schematic diagram of the structure of the lower housing of the energy storage device provided in the embodiments of this application Figure 3 ;

[0027] Figure 5 Provided for the embodiments of this application Figure 4 A schematic diagram of the structure of part B.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - First box side panel;

[0030] 200 - Second box side panel;

[0031] 300 - First end plate cover;

[0032] 400 - Second end plate cover;

[0033] 500 - Box bottom and side panels;

[0034] 501 - First sealing groove position;

[0035] 502 - Second sealing groove;

[0036] 503 - Third sealing groove;

[0037] 504 - Fourth sealing groove;

[0038] 505 - First Flip;

[0039] 506 - Second Flip;

[0040] 600 - Sealing gasket;

[0041] 700-Liquid Cooling Plate;

[0042] 701 - Cooling Circuit;

[0043] 800 - First Pipeline;

[0044] 900 - Second Pipeline;

[0045] 1000 - Mounting bracket;

[0046] 1100-roller beam;

[0047] 1200 - First connector;

[0048] 1300 - Second connector;

[0049] 1400 - First limit block;

[0050] 1500 - Second limit block;

[0051] 1600 - First sealing groove;

[0052] 1700 - Second sealing groove. Detailed Implementation

[0053] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0054] In the embodiments of this application, the terms "first" and "second" are used to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that "first" and "second" do not necessarily imply difference. It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner. In the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more.

[0055] It should be noted that the phrase "at...time" in the embodiments of this application can refer to the instant at which a certain situation occurs, or to a period of time after the occurrence of a certain situation; the embodiments of this application do not specifically limit this. Furthermore, the lower casing and energy storage battery provided in the embodiments of this application are merely examples; the lower casing and energy storage battery may also include more or fewer components.

[0056] To facilitate a clear description of the technical solutions in the embodiments of this application, some terms and technologies involved in the embodiments of this application will be briefly introduced below:

[0057] Liquid cooling plates are heat dissipation devices, typically made of materials with good thermal conductivity, containing internal fluid channels that absorb and conduct heat through liquid circulation. They are widely used in fields requiring efficient heat dissipation, such as electronic equipment, data centers, power electronics, and electric vehicle battery systems.

[0058] Roll-formed beam: A structural component used for support and fixation. Manufactured through a roll forming process, it features high strength and lightweight, effectively distributing and bearing the weight and vibration of the battery cells, ensuring the overall stability and safety of the energy storage device's lower enclosure. This design helps optimize space utilization and improve system durability.

[0059] Sealant groove: A recessed structure designed to hold sealant, typically used in the joint area of ​​two components to ensure airtightness and watertightness at the connection. It prevents the infiltration or leakage of liquids, gases, or other external substances by providing a dedicated space for applying and retaining the sealant. Commonly found in automotive manufacturing, electronic equipment, and piping systems, it enhances the sealing performance and durability of structures.

[0060] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0061] The technical solutions of this application will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0062] To clearly understand the technical solution of this application, the existing technology solutions will first be described in detail. In the prior art, to efficiently manage multiple battery cells, multiple battery cells are usually placed in a lower enclosure of an energy storage device, rather than using multiple battery cells directly. This provides unified mechanical support and protection for multiple battery cells, preventing physical damage and environmental impact. At the same time, this design allows for more effective thermal management, preventing overheating through an integrated heat dissipation mechanism. In addition, the lower enclosure ensures electrical connection and load balancing between battery cells, optimizes power output and efficiency, and improves system safety and reliability.

[0063] However, existing energy storage device lower enclosures suffer from low space utilization. Current technology integrates multiple cells into a battery pack before placing them into the lower enclosure, then seals the battery pack, and finally places the sealed battery pack into the lower enclosure. However, the battery pack's outer casing and sealing structure occupy a portion of the lower enclosure's space. While this design provides sealing protection for the cells, the battery pack's outer casing and sealing materials do not participate in energy storage, yet they occupy space, resulting in wasted space.

[0064] Therefore, addressing the issue of low space utilization in the lower enclosure of energy storage devices in existing technologies, the research found that to solve this problem, sealing components can be added to the lower enclosure of the energy storage device. These sealing components can seal multiple battery cells, eliminating the need for a battery pack and improving the space utilization of the lower enclosure: ① Sealing grooves or covers can be directly designed inside the lower enclosure, allowing direct contact and sealing with the battery cells. This eliminates the need for a battery pack casing and sealing materials, utilizing the enclosure's own structure for sealing, thus improving space utilization. ② Detachable modular sealing components can be developed. These components can be adjusted and reconfigured according to the number and arrangement of the battery cells. This flexible design reduces unnecessary space occupation while ensuring effective sealing and protection for each battery cell. ③ The lower enclosure itself can be designed as a single, airtight structure. Through precise manufacturing processes and material selection, the enclosure can automatically form a seal when closed.

[0065] Specifically, an energy storage device enclosure can be designed that integrates sealing components and a thermal management system, directly sealing and protecting multiple battery cells, eliminating the need for the outer casing and sealing structure of traditional battery packs. Dedicated sealed chambers and channels are constructed inside the enclosure to ensure independent protection and heat dissipation for each cell, while maintaining electrical connectivity and load balancing between cells. By optimizing the internal structure and material selection of the enclosure, this solution not only improves space utilization but also enhances the overall performance and reliability of the system.

[0066] The energy storage device lower housing and energy storage battery of this application embodiment eliminate the use of battery packs and sealing structures, directly utilizing the housing's own structure and sealing gaskets to provide sealing protection, thereby solving the problem of low space utilization in the prior art. By directly connecting and sealing the first housing side panel, the second housing side panel, the first end plate cover, the second end plate cover, and the bottom side panel, the battery cells can be sealed and protected, while effectively reducing unnecessary space occupation, allowing more internal space to be used to accommodate the battery cells, thereby improving the overall space utilization of the energy storage device lower housing.

[0067] Based on the above-mentioned inventive discovery, the technical solution of this application is proposed.

[0068] The embodiments of this application are described below with reference to the accompanying drawings.

[0069] Figure 1 Schematic diagram of the structure of the lower housing of the energy storage device provided in the embodiments of this application Figure 1 . Figure 2 Schematic diagram of the structure of the lower housing of the energy storage device provided in the embodiments of this application Figure 2 . Figure 3 Provided for the embodiments of this application Figure 2 A schematic diagram of the structure of part A. Figure 4 Schematic diagram of the structure of the lower housing of the energy storage device provided in the embodiments of this application Figure 3 .like Figures 1 to 4 As shown, in this embodiment, the lower housing of the energy storage device includes: a first housing side plate 100, a second housing side plate 200, a first end plate cover 300, a second end plate cover 400, a bottom housing side plate 500, and a sealing gasket 600.

[0070] Specifically, the first side panel 100 and the second side panel 200 are the side panels of the lower enclosure of the energy storage device, forming the side wall structure of the enclosure and providing support and protection. The first end cover 300 and the second end cover 400 are the end covers of the enclosure, used to close both ends of the enclosure and ensure the safety and stability of the internal components. The bottom side panel 500 is the bottom plate of the enclosure, used to support the entire enclosure structure and provide a base for installing and fixing other components. The sealing gasket 600 is a sealing material installed in the sealing groove of the bottom side panel to ensure good sealing performance at the joints between the various panels, preventing dust, moisture or other external substances from entering the enclosure.

[0071] The two ends of the first box side panel 100 are respectively connected to one end of the first end plate cover 300 and one end of the second end plate cover 400, and the two ends of the second box side panel 200 are respectively connected to the other end of the first end plate cover 300 and the other end of the second end plate cover 400.

[0072] Specifically, the first housing side plate 100 can be connected to the first end plate cover 300 and the second end plate cover 400, respectively, and the second housing side plate 200 can be connected to the first end plate cover 300 and the second end plate cover 400, respectively, through mechanical connections such as bolts, welding, or clips. This connection method is used to construct a complete and stable housing structure, ensuring that the housing can withstand internal and external pressures during use, while providing protection and support for the internal energy storage components. Through this connection, the overall structure of the housing is formed, providing a foundation for subsequent sealing and protection.

[0073] The bottom side plate 500 of the box is provided with a first sealing groove 501, a second sealing groove 502, a third sealing groove 503 and a fourth sealing groove 504.

[0074] Specifically, the first sealing groove 501, the second sealing groove 502, the third sealing groove 503, and the fourth sealing groove 504 can be obtained by machining grooves on the surface of the bottom side panel of the enclosure. These sealing grooves are designed to ensure good sealing performance at the connections with the first enclosure side panel 100, the second enclosure side panel 200, the first end plate cover 300, and the second end plate cover 400. By setting sealing grooves in these locations, external substances such as dust and moisture can be effectively prevented from entering the enclosure, thereby protecting the safety and functional integrity of the internal energy storage components.

[0075] The first box side panel 100, the second box side panel 200, the first end plate cover 300, and the second end plate cover 400 are all connected to the first sealing groove 501, the second sealing groove 502, the third sealing groove 503, and the fourth sealing groove 504 respectively through sealing gaskets 600.

[0076] Specifically, the edges of these side panels and end caps are connected to the sealing grooves of the bottom side panels of the enclosure via sealing gaskets 600, forming a tight sealing interface. This design ensures good sealing performance at all joints of the enclosure, preventing dust, moisture, and other external environmental contaminants from entering the enclosure, thereby protecting the internal energy storage components, extending their service life, and improving their reliability.

[0077] This embodiment provides a lower enclosure for an energy storage device, which comprises multiple components, including a first enclosure side panel, a second enclosure side panel, a first end plate cover, a second end plate cover, a bottom enclosure side panel, and a sealing gasket. Each side panel and end plate cover is connected to a sealing groove on the bottom enclosure side panel via the sealing gasket to form a sealed enclosure structure. This lower enclosure for the energy storage device achieves the following technical effects: by eliminating the traditional battery pack and sealing structure, and utilizing the enclosure's own structure combined with the sealing gasket to provide sealing protection, it solves the problem of low space utilization in existing energy storage device lower enclosures. By directly connecting and sealing the first enclosure side panel, the second enclosure side panel, the first end plate cover, the second end plate cover, and the bottom enclosure side panel, sealed protection for the battery cells is achieved. This design effectively reduces unnecessary space occupation, allowing more internal space to be used to accommodate the battery cells, thereby improving the overall space utilization of the lower enclosure for the energy storage device.

[0078] In one possible design, a liquid cooling plate 700 is provided on the bottom side panel 500 of the box, and the two ends of the liquid cooling plate 700 are respectively connected to the first box side panel 100 and the second box side panel 200.

[0079] Specifically, a liquid cooling plate 700 can be installed on the bottom side panel 500 of the storage tank, ensuring that both ends of the liquid cooling plate are securely connected to the first side panel 100 and the second side panel 200 of the storage tank. This connection can be achieved through welding, bolting, or other mechanical methods. The liquid cooling plate 700 is designed to provide effective thermal management during the use of the storage tank, removing heat through liquid circulation to prevent overheating of the battery cells.

[0080] The technical effect of this embodiment is that the liquid circulation system of the liquid cooling plate can efficiently dissipate heat, prevent the battery cells from overheating during operation, thereby improving the overall performance of the lower housing of the energy storage device and extending its service life.

[0081] In one possible design, the liquid cooling plate 700 is provided with a cooling circuit 701, which is used to transport coolant to reduce the temperature of the battery cells in the lower housing of the energy storage device.

[0082] Specifically, a series of pipes or channels can be designed and manufactured inside or on the surface of the liquid cooling plate 700, forming a cooling circuit 701. The cooling circuit 701 is used to transport coolant, which absorbs and removes heat generated by the battery cells in the lower casing of the energy storage device, thereby effectively reducing the temperature of the battery cells. This design helps maintain the battery cells within a safe operating temperature range, improves the safety of the lower casing of the energy storage device, and extends its service life.

[0083] The technical effect of this embodiment is that by setting a cooling circuit on the liquid cooling plate, a highly efficient thermal management system is realized. The temperature of the battery cells in the lower box of the energy storage device can be effectively reduced through the circulation of the coolant. This design improves heat dissipation efficiency.

[0084] In one possible design, the lower enclosure of the energy storage device further includes: a first pipe 800 and a second pipe 900. Both the first pipe 800 and the second pipe 900 are connected to the cooling circuit 701 through the bottom side plate 500. The first pipe 800 is used to receive coolant supplied by external equipment, and the second pipe 900 is used to supply coolant in the cooling circuit 701 to external equipment. The external equipment is used to supply and receive coolant to reduce the temperature of the battery cells in the lower enclosure of the energy storage device.

[0085] Specifically, interfaces or holes can be made in the side panel 500 at the bottom of the enclosure, and pipes can be connected to the inlet and outlet of the cooling circuit 701 through these interfaces. The first pipe 800 is used to receive coolant supplied by external equipment and introduce it into the cooling circuit 701, while the second pipe 900 is used to transport the heated coolant in the cooling circuit 701 back to the external equipment for recooling. This design is used to form a complete coolant circulation system, ensuring that the coolant can flow effectively through the cooling circuit 701, thereby reducing the temperature of the cells in the lower enclosure of the energy storage device and improving its thermal management efficiency.

[0086] The technical advantages of this embodiment are as follows: By introducing the first and second pipes, a coolant circulation connection with external equipment is achieved, forming a closed coolant circulation system that can continuously and effectively transport and recover coolant. This design ensures efficient coolant flow in the cooling circuit, thereby reducing the temperature of the battery cells in the lower casing of the energy storage device and improving thermal management efficiency.

[0087] In one possible design, the lower housing of the energy storage device also includes: a mounting bracket 1000 and a roller beam 1100.

[0088] Specifically, the mounting bracket 1000 is a component used to support and secure the structure. It is designed to connect the roll-formed beam 1100 and the first end plate cover 300, providing additional structural stability and support. The roll-formed beam 1100, a beam designed to enhance structural strength and stability, connects to the bottom side plate 500 and is intended to enhance the overall rigidity and resistance to deformation of the enclosure by providing additional mechanical support. These two components work together to ensure that the lower enclosure of the energy storage device maintains structural integrity during use, withstands external pressure and vibration, and extends the service life of the equipment.

[0089] The mounting bracket 1000 is connected to the roller beam 1100 and the first end plate cover 300 respectively, and the roller beam 1100 is connected to the bottom side plate 500 of the box.

[0090] Specifically, the connections between components can be secured using mechanical fasteners such as bolts, welding, or other fasteners. The mounting bracket 1000 is securely connected to the roller beam 1100 and the first end plate cover 300 via these fasteners, while the roller beam 1100 is connected to the bottom side plate 500 in a similar manner. This structural design provides additional mechanical support and stability, ensuring the lower enclosure of the energy storage device maintains structural integrity under external pressure and vibration, thereby improving the durability and safety of the equipment.

[0091] The technical advantages of this embodiment are as follows: by introducing mounting brackets and roller beams, the structural stability and strength of the lower housing of the energy storage device are enhanced, enabling the housing to effectively resist external pressure and vibration. This design not only improves the rigidity and deformation resistance of the housing, ensuring its structural integrity during use, but also extends the service life of the equipment.

[0092] In one possible design, the bottom side panel 500 is provided with a first flange 505 and a second flange 506. The bottom side panel 500 is connected to the first box body side panel 100 through the first flange 505, and the bottom side panel 500 is connected to the second box body side panel 200 through the second flange 506.

[0093] Specifically, upward-curving flanges can be machined into the corresponding edges of the bottom side panel 500. These flanges provide additional connecting surfaces, allowing them to be securely connected to the first side panel 100 and the second side panel 200 via welding, bolting, or other fastening methods. The flanges are designed to enhance the strength and stability of the connection, prevent the external environment from affecting the interior of the enclosure, and improve the rigidity and durability of the entire enclosure structure.

[0094] The technical advantages of this embodiment are as follows: By setting a first flange and a second flange on the bottom side panel of the box, a stable connection with the first and second side panels of the box is achieved, enhancing the overall strength and sealing of the box structure. The flange design provides a large contact area and a reliable connection method, improving the rigidity and deformation resistance of the box, and ensuring that it can effectively resist the influence of the external environment, such as vibration and impact, during use.

[0095] In one possible design, the lower housing of the energy storage device further includes: a first connector 1200 and a second connector 1300.

[0096] Specifically, the first connector 1200 and the second connector 1300 are components used to strengthen the structural connections. The first connector 1200 connects one end of the roller beam 1100 to the first flange 505, and the second connector 1300 connects the other end of the roller beam 1100 to the second flange 506. The main function of these connectors is to enhance the connection strength and stability between the roller beam 1100 and the bottom side plate 500, ensuring that the structure maintains its integrity and rigidity under external pressure or vibration conditions. By providing additional support and fixation, these connectors help improve the durability and safety of the energy storage device's lower enclosure, preventing structural deformation or loosening.

[0097] The first connector 1200 is connected to one end of the roller beam 1100 and the first flange 505, and the second connector 1300 is connected to the other end of the roller beam 1100 and the second flange 506. Both the first connector 1200 and the second connector 1300 are used to strengthen the connection between the roller beam 1100 and the bottom side plate 500.

[0098] Specifically, the connectors can be securely fixed to the roll forming beam 1100 and the flange using mechanical fasteners such as bolts, nuts, or welding. These connectors are designed to fit the shape and size of the roll forming beam 1100 and the flange to ensure a tight fit and effective force transmission. Their main purpose is to provide additional structural support and stability, enhance the connection strength between the roll forming beam 1100 and the bottom side plate 500, and ensure that the enclosure structure maintains its integrity and rigidity under external pressure, vibration, or other stress conditions, thereby improving the durability and safety of the energy storage device's enclosure.

[0099] The technical advantages of this embodiment are as follows: By introducing the first and second connecting components, the connection strength and stability between the roller beam and the bottom side plate of the tank are enhanced, enabling the entire tank structure to maintain its integrity and rigidity when facing external pressure, vibration, or other stresses. This design effectively prevents structural deformation or loosening, improving the durability and safety of the energy storage device.

[0100] Figure 5 Provided for the embodiments of this application Figure 4 A structural diagram of part B. (See diagram below.) Figure 5 As shown, in this embodiment... Figures 1 to 4 Based on the embodiments, the lower housing of the energy storage device will be described in detail.

[0101] A first limiting block 1400 is provided between the first flange 505 and the first box side panel 100, and a second limiting block 1500 is provided between the second flange 506 and the second box side panel 200. The first limiting block 1400 is used to enhance the connection between the first flange 505 and the first box side panel 100, and the second limiting block 1500 is used to enhance the connection between the second flange 506 and the second box side panel 200.

[0102] Specifically, limiting blocks can be installed between the flange and the side panel of the enclosure. These limiting blocks can be installed by welding, bolting, or snap-fitting. The limiting blocks provide additional mechanical support and positioning, ensuring a more secure connection between the flange and the side panel, enhancing the connection strength, and preventing displacement or loosening due to vibration or external forces during use. This improves the overall structural stability and durability of the enclosure.

[0103] The technical effect of this embodiment is that by setting the first limiting block and the second limiting block, additional mechanical support and positioning are provided, which enhances the connection strength and stability between the flange and the side plate of the box, and prevents structural displacement or loosening caused by vibration or external force.

[0104] In one possible design, a first sealing groove 1600 is provided between the first flange 505 and the first box side panel 100, and a second sealing groove 1700 is provided between the second flange 506 and the second box side panel 200. Both the first sealing groove 1600 and the second sealing groove 1700 are used to fill with sealant to enhance the connection between the first flange 505 and the first box side panel 100, and the connection between the second flange 506 and the second box side panel 200.

[0105] Specifically, grooves can be designed into the joint area between the flange and the side panel of the enclosure to accommodate sealant. The sealant grooves ensure that the sealant fully fills the joint area, providing effective sealing and adhesion. These grooves enhance the connection strength and sealing between the flange and the side panel, preventing the ingress of liquids, gases, or dust, improving the structural integrity and durability of the enclosure, and ensuring the reliability and safety of the energy storage device under various environmental conditions.

[0106] The technical effect of this embodiment is that by setting a first sealant groove and a second sealant groove and filling them with sealant, the bonding strength and sealing performance between the flange and the side panel of the enclosure are enhanced. This design effectively prevents the infiltration of liquids, gases, or dust, improving the enclosure's protective capabilities and structural integrity.

[0107] This application embodiment also provides an energy storage battery, including: an upper cover, a battery cell, and such as... Figures 1 to 5 The lower casing of the energy storage device.

[0108] Specifically, this energy storage battery, by combining the upper cover and battery cells with an optimized lower casing of the energy storage device, provides a complete energy storage solution. This design improves space utilization by eliminating the traditional battery pack and sealing structure, directly utilizing the casing structure and sealing gaskets for sealing protection. The various side and end panels of the casing are sealed together to ensure the safety and sealing of the battery cells, while freeing up more internal space to accommodate them. This integrated design not only optimizes the structure of the energy storage battery but also improves its overall performance and efficiency, making it suitable for applications requiring high-density energy storage.

[0109] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A lower housing for an energy storage device, characterized in that, include: First box side panel (100), second box side panel (200), first end plate cover (300), second end plate cover (400), box bottom side panel (500) and sealing gasket (600); The two ends of the first box side panel (100) are respectively connected to one end of the first end plate cover (300) and one end of the second end plate cover (400), and the two ends of the second box side panel (200) are respectively connected to the other end of the first end plate cover (300) and the other end of the second end plate cover (400); The bottom side plate (500) of the box is provided with a first sealing groove (501), a second sealing groove (502), a third sealing groove (503) and a fourth sealing groove (504). The first box side panel (100), the second box side panel (200), the first end plate cover (300) and the second end plate cover (400) are all connected to the first sealing groove (501), the second sealing groove (502), the third sealing groove (503) and the fourth sealing groove (504) respectively through the sealing gasket (600).

2. The lower housing of the energy storage device according to claim 1, characterized in that, The bottom side plate (500) of the box is provided with a liquid cooling plate (700), and the two ends of the liquid cooling plate (700) are respectively connected to the first box side plate (100) and the second box side plate (200).

3. The lower housing of the energy storage device according to claim 2, characterized in that, The liquid cooling plate (700) is provided with a cooling circuit (701), which is used to transport coolant to reduce the temperature of the battery cells in the lower housing of the energy storage device.

4. The lower housing of the energy storage device according to claim 3, characterized in that, Also includes: The first pipe (800) and the second pipe (900) are both connected to the cooling circuit (701) through the bottom side plate (500). The first pipe (800) is used to receive coolant delivered by external equipment, and the second pipe (900) is used to deliver coolant in the cooling circuit (701) to the external equipment. The external equipment is used to deliver and receive coolant to reduce the temperature of the battery cells in the lower casing of the energy storage device.

5. The lower housing of the energy storage device according to claim 1, characterized in that, Also includes: Mounting bracket (1000) and roller beam (1100); The mounting bracket (1000) is connected to the roller beam (1100) and the first end plate cover (300) respectively, and the roller beam (1100) is connected to the bottom side plate (500).

6. The lower housing of the energy storage device according to claim 5, characterized in that, The bottom side panel (500) of the box is provided with a first flange (505) and a second flange (506). The bottom side panel (500) is connected to the first box body side panel (100) through the first flange (505), and the bottom side panel (500) is connected to the second box body side panel (200) through the second flange (506).

7. The lower housing of the energy storage device according to claim 6, characterized in that, Also includes: First connector (1200) and second connector (1300); The first connector (1200) is connected to one end of the roller beam (1100) and the first flange (505), and the second connector (1300) is connected to the other end of the roller beam (1100) and the second flange (506). Both the first connector (1200) and the second connector (1300) are used to strengthen the connection between the roller beam (1100) and the bottom side plate (500).

8. The lower housing of the energy storage device according to claim 6, characterized in that, A first limiting block (1400) is provided between the first flange (505) and the first box side panel (100), and a second limiting block (1500) is provided between the second flange (506) and the second box side panel (200). The first limiting block (1400) is used to enhance the connection between the first flange (505) and the first box side panel (100), and the second limiting block (1500) is used to enhance the connection between the second flange (506) and the second box side panel (200).

9. The lower housing of the energy storage device according to claim 6, characterized in that, A first sealing groove (1600) is provided between the first flange (505) and the first box side panel (100), and a second sealing groove (1700) is provided between the second flange (506) and the second box side panel (200). The first sealing groove (1600) and the second sealing groove (1700) are both used to fill with sealant to enhance the connection between the first flange (505) and the first box side panel (100), and the connection between the second flange (506) and the second box side panel (200).

10. An energy storage battery, characterized in that, include: The upper cover, the battery cell, and the lower housing of the energy storage device as described in any one of claims 1 to 9.

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