Energy storage device, energy storage system, and charging network

Abstract

Embodiments of the present application provide an energy storage device, an energy storage system, and a charging network. The energy storage device comprises a cabinet, an electrical component, a thermal management module, and connecting pipes. The cabinet comprises a first compartment, and the first compartment comprises a first cabinet wall located at the top. At least part of the electrical component is arranged in the first compartment, the electrical component comprises a battery device and a control module, and the control module is used for performing electrical control on the battery device. The thermal management module is located above the first cabinet wall, and is used for adjusting the temperature of the battery device. The connecting pipes pass through the first cabinet wall in a vertical direction, connect the battery device to the thermal management module, and are used for transferring a cooling liquid. The energy storage device further comprises sealing structures, and the sealing structures are used for sealing gaps between the connecting pipes and the first cabinet wall. The technical solution provided in the present application can improve the reliability of the energy storage device.

Description

Energy storage devices, energy storage systems and charging networks Cross-references to related applications

[0001] This application claims priority to Chinese patent application 202520550458.8, filed on March 27, 2025, entitled “Energy Storage Device, Energy Storage System and Charging Network”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of energy storage technology, and more specifically, to an energy storage device, an energy storage system, and a charging network. Background Technology

[0003] With the rapid development of technology, electricity has become an indispensable energy source in people's production and daily life. To improve the smoothness of electricity supply and ensure the normal operation of production and daily life, energy storage devices are needed. As devices that cyclically store and release electrical energy, energy storage devices store electrical energy or supply the stored energy to electrical devices through charging or discharging. Energy storage devices are widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation, and energy storage power stations.

[0004] In the development of energy storage technology, how to improve the reliability of energy storage devices is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides an energy storage device, an energy storage system, and a charging network, which can improve the reliability of the energy storage device.

[0006] This application is achieved through the following technical solution:

[0007] In a first aspect, this application provides an energy storage device, comprising a housing, electrical components, a thermal management module, and a connecting pipe. The housing includes a first compartment, which includes a first wall at the top. At least a portion of the electrical components are disposed in the first compartment, including a battery device and a control module for electrically controlling the battery device. The thermal management module is located above the first wall and is used to regulate the temperature of the battery device. The connecting pipe passes vertically through the first wall, connecting the battery device and the thermal management module, and is used to deliver coolant. The energy storage device also includes a sealing structure for sealing the gap between the connecting pipe and the first wall.

[0008] The technical solution of this application embodiment, by placing the thermal management module above the first tank wall, allows the thermal management module to share the footprint with the tank, thus saving the floor space of the energy storage device. During charge-discharge cycles, the battery device experiences temperature increases. Excessive temperature can affect the charging and discharging of the battery device and may lead to thermal runaway. Connecting the battery device and the thermal management module via a connecting pipe enables temperature regulation of the battery device, improving the reliability of the energy storage device. The coolant after heat exchange with the battery device typically flows back to the thermal management module. The thermal management module needs to be connected to the outside environment for heat dissipation. A sealed structure seals the gap between the connecting pipe and the first tank wall, reducing the risk of external liquid entering the first compartment and causing a short circuit in the battery device, further improving the reliability of the energy storage device.

[0009] In some embodiments, the energy storage device further includes an insulation element, and a first cavity is formed inside the first tank wall, with the insulation element disposed in the first cavity.

[0010] The technical solution of this application embodiment provides an insulation component inside the first box wall, which separates the inside and outside of the first compartment, thereby reducing heat exchange between the outside and inside of the first compartment, reducing the influence of the outside of the first compartment on the temperature inside the first compartment, and thus reducing the impact of temperature on the battery device, which helps to improve the reliability of the energy storage device.

[0011] In some embodiments, a second cavity is formed inside the first housing wall, and the first housing wall includes a partition wall that separates the first cavity and the second cavity. A portion of the connecting pipe is located in the second cavity, and the connecting pipe is spaced apart from the partition wall.

[0012] In the technical solution of this application embodiment, the connecting pipe transports coolant. The temperature inside the connecting pipe is low. When the outer surface of the connecting pipe comes into contact with air, condensation will form on the outer surface of the connecting pipe. A portion of the connecting pipe is located in the second cavity. The first cavity and the second cavity are separated by a partition wall, and the connecting pipe and the partition wall are spaced apart. This reduces the risk of condensation forming on the outer surface of the connecting pipe seeping into the first cavity through the partition wall, and reduces the risk of condensation wetting the insulation component and affecting its heat insulation effect, thereby improving the reliability of the energy storage device.

[0013] In some embodiments, the first box wall is provided with a first opening, the first opening is in communication with the second cavity, and a sealing structure is provided in the second cavity.

[0014] In the technical solution of this application embodiment, the sealing structure is disposed in the second cavity. By providing a first opening in the first box wall that communicates with the second cavity, an operating space is provided for the installation of the sealing structure, which helps to improve the convenience of the installation of the sealing structure.

[0015] In some embodiments, the first box wall further includes a first wall and a second wall, which are arranged vertically opposite each other with the first wall located below the second wall. A first opening is provided in the first wall. A partition wall surrounds the first opening, with one end connected to the first wall and the other end connected to the second wall. The partition wall has a first surface facing the connecting pipe and a second surface facing away from the connecting pipe. The first surface is spaced apart from the connecting pipe, and the first surface and the second wall form a second cavity. The second surface, the first wall, and the second wall form a first cavity.

[0016] The technical solution of this application embodiment forms a second cavity by means of a partition wall and a second wall, and forms a first cavity by means of a partition wall, a first wall and a second wall, and the first surface of the partition wall is spaced apart from the connecting pipe, which reduces the risk of condensate on the surface of the connecting pipe wetting the insulation component and thus affecting the heat insulation effect of the insulation component, and helps to improve the reliability of the energy storage device.

[0017] In some embodiments, the first cavity wall further includes a reinforcing wall disposed in the second cavity, the reinforcing wall connecting at least two inner wall surfaces of the second cavity.

[0018] The technical solution of this application embodiment, by setting a reinforcing wall in the second cavity, helps to improve the structural strength of the first box wall, reduces the risk of damage to individual battery cells caused by damage to the first box wall, and helps to improve the reliability of the energy storage device.

[0019] In some embodiments, there are two connecting pipes, one of which is used by the thermal management module to deliver coolant to the battery device, and the other is used by the battery device to deliver coolant to the thermal management module. The two connecting pipes are spaced apart and separated by a reinforcing wall.

[0020] The technical solution of this application embodiment separates the two connecting pipes by strengthening the wall. On the one hand, when installing the connecting pipes, the two connecting pipes can be installed in their respective spaces, reducing the risk of mutual interference between the two connecting pipes during installation and improving the convenience of installation. On the other hand, during the use or transportation of the energy storage device, the two connecting pipes are located in their respective spaces, reducing the risk of mutual interference between the two connecting pipes and causing damage to the connecting pipes, and improving the reliability of the energy storage device.

[0021] In some embodiments, the connecting pipe includes a first section and a second section connected to each other, the first section passing through a first box wall in a vertical direction, the second section being located in a first compartment, and the second section being configured to deform to change the position of one end of the second section away from the first section.

[0022] The technical solution of this application embodiment can change the position of the end of the second segment away from the first segment by deforming the second segment. When the position of the component connected to the second segment is offset or there is a large tolerance, the position of the second segment can be adjusted by deforming the second segment, which helps to improve the convenience of connecting the second segment with other components.

[0023] In some embodiments, the second segment is configured as a bellows.

[0024] In the technical solution of this application embodiment, the bellows can deform to change the relative positions of its two ends. By setting the second section as a bellows and adjusting the position of the end of the second section away from the first section, the convenience of connecting the second section with other components is improved.

[0025] In some embodiments, the sealing structure includes a seal and a support, which are sleeved around the outer periphery of the connecting pipe. In the vertical direction, the seal is disposed between the support and the first box wall, and the support cooperates with the first box wall to clamp the seal.

[0026] The technical solution of this application embodiment uses a support member to clamp the sealing member with the first box wall, so that the sealing member can better seal the gap between the connecting pipe and the first box wall, reducing the risk of external liquid entering the first chamber and causing a short circuit in the battery device, which is beneficial to improving the reliability of the energy storage device.

[0027] In some embodiments, the first tank wall is provided with a mounting hole, and the energy storage device further includes a connector that passes through the mounting hole and connects to a support member, so that the support member and the first tank wall clamp the sealing member.

[0028] The technical solution of this application embodiment connects the support member and the first box wall through a connector, which facilitates the connection between the support member and the first box wall to clamp the sealing member, reduces the risk of external liquid entering the first compartment and causing a short circuit in the battery device, and helps to improve the reliability of the energy storage device.

[0029] In some embodiments, the connector includes a connecting portion and a fastening portion. The connecting portion passes through a mounting hole, one end of which is threadedly connected to a support member, and the other end engages with the fastening portion. A gap exists between the outer surface of the connecting portion and the inner wall of the mounting hole, and the fastening portion is confined to the side of the first housing wall opposite to the support member.

[0030] The technical solution of this application embodiment connects the first box wall and the support member through a connecting part and a limiting part, which facilitates the clamping of the sealing member by the support member and the first box wall. Simultaneously, by providing a gap between the outer surface of the connecting part and the inner wall surface of the mounting hole, it is easy to adjust the installation position of the connecting member. Therefore, adjusting the installation position of the support member facilitates adjusting the installation position of the connecting pipe. When the position of the component connected to the connecting pipe deviates or has a large tolerance, the position of the connecting pipe can be adjusted, which improves the convenience of connecting the connecting pipe to other components.

[0031] In some embodiments, the enclosure further includes a second compartment located above the first enclosure wall, the thermal management module being housed in the second compartment, and an air outlet being provided on the top wall of the second compartment.

[0032] The technical solution of this application embodiment reduces the risk of damage to the thermal management module and improves the reliability of the energy storage device by placing the thermal management module in the second compartment and isolating it from the outside environment through the compartment wall. Furthermore, by providing an air outlet in the second compartment, the heat dissipation effect of the thermal management module is improved, which in turn enhances the heat exchange between the thermal management module and the battery device, thereby improving the reliability of the energy storage device.

[0033] Secondly, embodiments of this application also provide an energy storage device, which includes an insulation component, a housing, electrical components, a thermal management module, and a connecting pipe. The housing includes a first compartment, and the first compartment includes a first housing wall. At least a portion of the electrical components are disposed in the first compartment, and the electrical components include a battery device and a control module, the control module being used for electrical control of the battery device. The thermal management module is used for regulating the temperature of the battery device. The connecting pipe connects the battery device and the thermal management module, and the connecting pipe is used for conveying coolant. The first housing wall includes a partition wall disposed inside the first housing wall to divide the internal space of the first housing wall into a first cavity and a second cavity. The insulation component is disposed in the first cavity, and the connecting pipe passes through the first housing wall and is at least partially located in the second cavity, with the connecting pipe in the second cavity spaced apart from the partition wall.

[0034] The technical solution of this application embodiment addresses the issue that the battery device experiences temperature increases during charge-discharge cycles. Excessive temperature can negatively impact battery charging and discharging, and may even lead to thermal runaway. Connecting the battery device and the thermal management module via a connecting pipe enables temperature regulation of the battery device, improving the reliability of the energy storage device. By installing an insulation component in the first cavity, separating the interior and exterior of the first compartment, heat exchange between the two is minimized, reducing the influence of the exterior on the interior temperature and thus reducing the impact of temperature on the battery device, further enhancing its reliability. The connecting pipe delivers coolant, resulting in a lower temperature inside. When the outer surface of the connecting pipe comes into contact with air, condensation occurs. A portion of the connecting pipe is located in the second cavity. A partition wall separates the first and second cavities, and the connecting pipe and partition wall are spaced apart. This reduces the risk of condensation from the outer surface of the connecting pipe seeping into the first cavity through the partition wall, and also reduces the risk of condensation wetting the insulation component and affecting its insulation performance, further improving the reliability of the energy storage device.

[0035] In some embodiments, the first box wall further includes a first wall and a second wall, which are disposed opposite to each other along the thickness direction of the first box wall. One end of the partition wall is connected to the first wall and the other end is connected to the second wall. The partition wall has a first surface facing the connecting pipe and a second surface facing away from the connecting pipe. The first surface and the second wall form a second cavity, and the second surface, the first wall, and the second wall form a first cavity.

[0036] The technical solution of this application embodiment forms a second cavity by means of a partition wall and a second wall, and forms a first cavity by means of a partition wall, a first wall and a second wall, and the first surface of the partition wall is spaced apart from the connecting pipe, which reduces the risk of condensate on the surface of the connecting pipe wetting the insulation component and thus affecting the heat insulation effect of the insulation component, and helps to improve the reliability of the energy storage device.

[0037] In some embodiments, the first cavity wall further includes a reinforcing wall disposed in the second cavity, the reinforcing wall connecting at least two inner wall surfaces of the second cavity.

[0038] The technical solution of this application embodiment, by setting a reinforcing wall in the second cavity, helps to improve the structural strength of the first box wall, reduces the risk of damage to individual battery cells caused by damage to the first box wall, and helps to improve the reliability of the energy storage device.

[0039] In some embodiments, there are two connecting pipes, one of which is used by the thermal management module to deliver coolant to the battery device, and the other is used by the battery device to deliver coolant to the thermal management module. The two connecting pipes are spaced apart and separated by a reinforcing wall.

[0040] The technical solution of this application embodiment separates the two connecting pipes by strengthening the wall. On the one hand, when installing the connecting pipes, the two connecting pipes can be installed in their respective spaces, reducing the risk of mutual interference between the two connecting pipes during installation and improving the convenience of installation. On the other hand, during the use or transportation of the energy storage device, the two connecting pipes are located in their respective spaces, reducing the risk of mutual interference between the two connecting pipes and causing damage to the connecting pipes, and improving the reliability of the energy storage device.

[0041] In some embodiments, the connecting tube includes an adjustment section located in the first compartment and connected to the battery device, the adjustment section being configured to deform to change the position of the end of the connecting tube away from the thermal management module.

[0042] The technical solution of this application embodiment can change the position of the adjustment section by deforming the adjustment section. When the position of the component connected to the adjustment section is offset or there is a large tolerance, the position of the adjustment section can be adjusted by deforming the adjustment section, which helps to improve the convenience of connecting the adjustment section with other components.

[0043] In some embodiments, the regulating section is configured as a bellows.

[0044] In the technical solution of this application embodiment, the bellows can deform to change the relative positions of its two ends. By setting the adjustment section as a bellows and adjusting its position, the convenience of connecting the adjustment section with other components is improved.

[0045] In some embodiments, the first housing wall has a first opening communicating with a second cavity. The energy storage device also includes a sealing structure disposed in the second cavity, the sealing structure being used to seal the gap between the connecting pipe and the first housing wall.

[0046] In the technical solution of this application embodiment, the sealing structure is disposed in the second cavity. By providing a first opening in the first box wall that communicates with the second cavity, an operating space is provided for the installation of the sealing structure, which helps to improve the convenience of the installation of the sealing structure.

[0047] In some embodiments, the sealing structure includes a seal and a support, which are sleeved around the outer periphery of the connecting pipe. Along the thickness direction of the first box wall, the seal is disposed between the support and the first box wall, and the support cooperates with the first box wall to clamp the seal.

[0048] The technical solution of this application embodiment uses a support member to clamp the sealing member with the first box wall, so that the sealing member can better seal the gap between the connecting pipe and the first box wall, reducing the risk of external liquid entering the first chamber and causing a short circuit in the battery device, which is beneficial to improving the reliability of the energy storage device.

[0049] In some embodiments, the first tank wall is provided with a mounting hole, and the energy storage device further includes a connector that passes through the mounting hole and connects to a support member, so that the support member and the first tank wall clamp the sealing member.

[0050] The technical solution of this application embodiment connects the support member and the first box wall through a connector, which facilitates the connection between the support member and the first box wall to clamp the sealing member, reduces the risk of external liquid entering the first compartment and causing a short circuit in the battery device, and helps to improve the reliability of the energy storage device.

[0051] In some embodiments, the connector includes a connecting portion and a fastening portion. The connecting portion passes through a mounting hole, one end of which is threadedly connected to a support member, and the other end engages with the fastening portion. A gap exists between the outer surface of the connecting portion and the inner wall of the mounting hole, and the fastening portion is confined to the side of the first housing wall opposite to the support member.

[0052] The technical solution of this application embodiment connects the first box wall and the support member through a connecting part and a limiting part, which facilitates the clamping of the sealing member by the support member and the first box wall. Simultaneously, by providing a gap between the outer surface of the connecting part and the inner wall surface of the mounting hole, it is easy to adjust the installation position of the connecting member. Therefore, adjusting the installation position of the support member facilitates adjusting the installation position of the connecting pipe. When the position of the component connected to the connecting pipe deviates or has a large tolerance, the position of the connecting pipe can be adjusted, which improves the convenience of connecting the connecting pipe to other components.

[0053] Thirdly, embodiments of this application also provide an energy storage system, which includes an energy storage converter and an energy storage device as described above, wherein the energy storage converter is used to electrically connect the power generation device and the energy storage device.

[0054] Fourthly, embodiments of this application also provide a charging network, which includes charging piles and energy storage devices as described above, wherein the energy storage devices are used to provide electrical energy to the charging piles.

[0055] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0056] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 is a schematic diagram of a charging network provided in some embodiments of this application;

[0058] Figure 2 is a schematic diagram of an energy storage system provided in some embodiments of this application;

[0059] Figure 3 is a schematic diagram of an energy storage device provided in some embodiments of this application;

[0060] Figure 4 is a schematic diagram of the connecting pipe passing through the first box wall according to some embodiments of this application;

[0061] Figure 5 is a schematic diagram of the assembly of the sealing structure and connecting pipe provided in some embodiments of this application;

[0062] Figure 6 is a schematic diagram of the structure of the first box wall provided in some embodiments of this application;

[0063] Figure 7 is an enlarged view of point A in Figure 6;

[0064] Figure 8 is a schematic diagram of an energy storage device provided in some other embodiments of this application;

[0065] Figure 9 is a schematic diagram of the connecting pipe passing through the first box wall according to some other embodiments of this application;

[0066] Figure 10 is a schematic diagram of the assembly of the sealing structure and connecting pipe provided in some other embodiments of this application;

[0067] Figure 11 is a schematic diagram of the structure of the first box wall provided in some other embodiments of this application;

[0068] Figure 12 is an enlarged view of point B in Figure 11.

[0069] Icons: 1-Energy storage device; 10-Box body; 11-First compartment; 11a-Battery compartment; 11b-Electrical compartment; 111-First box wall; 1111-First cavity; 1112-Second cavity; 1113-Separation wall; 1113a-First surface; 1113b-Second surface; 1114-First opening; 1115-First wall; 1116-Second wall; 1117-Third wall; 1118-Reinforcing wall; 1119-Mounting hole; 12-Second compartment; 121-Air outlet; 20-Control module; 21-Battery unit; 22-Electrical components; 30-Thermal management module; 40-Connecting pipe; 41-First section; 42-Second section; 43-Adjusting section; 50-Sealing structure; 51-Sealing element; 52-Supporting element; 60-Insulation element; 70-Connecting element; 71-Connecting part; 72-Fastening part; 100-Charging network; 110-Charging pile; 200-Energy storage system; 210-Energy storage converter; 220-Power generation device; X-Horizontal direction; Y-Vertical direction. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0071] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0072] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0074] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0075] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0076] The battery device mentioned in the embodiments of this application may include a single physical module containing one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar.

[0077] In this application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0078] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0079] Optionally, the electrode assembly has a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0080] Optionally, the electrode assembly has a stacked structure.

[0081] Optionally, the electrode assembly can be cylindrical, flat, or polygonal in shape.

[0082] In some embodiments, the battery device may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0083] In some embodiments, the battery device may be a battery pack, which includes a housing and individual battery cells, wherein the individual battery cells or battery modules are housed in the housing.

[0084] In some embodiments, the energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0085] Energy storage devices typically include a housing, a thermal management module, connecting pipes, and a battery unit. Both the battery unit and the thermal management module are housed within the housing. The connecting pipes connect the battery unit and the thermal management module to facilitate the exchange of coolant between the thermal management module and the battery unit, allowing the thermal management module to regulate the temperature of the battery unit.

[0086] To reduce the footprint of the thermal management module, it can be placed above the battery device, allowing the thermal management module and the battery device to share the same footprint, thus reducing the additional space required for the thermal management module.

[0087] To facilitate heat dissipation, the thermal management module is typically connected to the outside of the enclosure. However, this connection allows external liquids (such as rainwater, dew, or other liquids) to enter the enclosure, potentially coming into contact with the battery and causing a short circuit, thus affecting the reliability of the energy storage device.

[0088] In view of this, to address the risk of external liquid contact with the battery device, leading to a short circuit and affecting the reliability of the energy storage device, this application proposes an energy storage device. The energy storage device includes a housing, electrical components, a thermal management module, and a connecting pipe. The housing includes a first compartment, which includes a first wall at the top. At least a portion of the electrical components are disposed in the first compartment, including the battery device and a control module for electrically controlling the battery device. The thermal management module is located above the first wall and is used to regulate the temperature of the battery device. The connecting pipe passes vertically through the first wall, connecting the battery device and the thermal management module, and is used to deliver coolant. The energy storage device also includes a sealing structure for sealing the gap between the connecting pipe and the first wall.

[0089] By sealing the gap between the connecting pipe and the first tank wall through a sealed structure, the risk of external liquid entering the first compartment and causing a short circuit in the battery device is reduced, which helps to improve the reliability of the energy storage device.

[0090] The energy storage devices disclosed in this application can be used in energy storage power stations, wind power generation systems, solar power generation systems, charging piles, mobile power systems, or temporary power supply systems. Energy storage power stations can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. Wind power generation systems collect wind energy from wind turbines, convert it into electrical energy, and store it in energy storage devices. Solar power generation systems can convert solar energy into electrical energy, store it in energy storage devices, and supply it to users as needed. Mobile power systems can supply power to relevant electrical equipment in areas where the mains power supply cannot reach, such as remote mountainous areas and remote wilderness areas. Temporary power supply systems can provide power to users when power supply is insufficient. The energy storage system provided in this application can be any power system that requires energy storage devices.

[0091] Please refer to Figures 1 and 3. Figure 1 is a schematic diagram of a charging network provided in some embodiments of this application. This application provides a charging network 100, which includes a charging pile 110 for charging electrical equipment. The charging network 100 may also include an energy storage device 1, which is electrically connected to the charging pile 110 and provides power to the charging pile 110.

[0092] It should be noted that the charging pile 110 is electrically connected to the battery device 21 in the energy storage device 1 via a cable. The battery device 21 can supply its stored electrical energy to the charging pile 110. The charging pile 110 has a connector that can be connected to electrical equipment, thereby replenishing the energy of the equipment. The application of the energy storage device 1 in this charging network 100 can effectively improve the security of the charging network 100 and also help to improve the flexibility of the charging network 100 during deployment.

[0093] In a charging network 100, there can be one charging pile 110, and the energy storage device 1 provides power to one charging pile 110; as shown in Figure 1, there can also be two charging piles 110, or there can be multiple charging piles 110, and the energy storage device 1 provides power to multiple charging piles 110.

[0094] The energy storage device 1 may include a housing and a battery device 21, which is electrically connected to the charging pile 110 so that the battery device can provide power to the charging pile 110.

[0095] Please refer to Figure 2, which is a schematic diagram of an energy storage system provided in some embodiments of this application. This application provides an energy storage system 200. The energy storage system 200 includes an energy storage converter 210, which can be electrically connected to a power generation device 220 to convert the electrical power provided by the power generation device 220. The energy storage system 200 may also include an energy storage device 1, which is electrically connected to the energy storage converter 210. The energy storage converter 210 converts the electrical energy provided by the power generation device 220 and stores it in the energy storage device 1.

[0096] An energy storage converter 210 is used to connect the power generation device 220 and the energy storage device 1. The power generation device 220 generates electrical energy and stores it in the energy storage device 1 via the energy storage converter 210. The use of the energy storage device 1 in this energy storage system 200 can effectively improve the operational safety of the energy storage system 200. In specific implementations, the power generation device 220 can be a solar panel, hydroelectric power generation equipment, thermal power generation equipment, etc. This application does not limit the specific type of the power generation device 220.

[0097] As an example, as shown in Figure 2, the energy storage system 200 includes an energy storage device 1 and an energy storage converter 210. Two power generation devices 220 respectively transmit the generated electrical energy to the energy storage converter 210, and the energy storage converter 210 imports the electrical energy into the energy storage device 1 for storage.

[0098] The energy storage device 1 of the first aspect embodiment is described below.

[0099] Please refer to Figures 3 and 4. Figure 3 is a schematic diagram of an energy storage device provided in some embodiments of this application, and Figure 4 is a schematic diagram of a connecting pipe passing through a first housing wall provided in some embodiments of this application. This application provides an energy storage device 1, which includes a housing 10, electrical components 22, a thermal management module 30, and a connecting pipe 40. The housing 10 includes a first compartment 11, which includes a first housing wall 111 located at the top. At least a portion of the electrical components 22 is disposed in the first compartment 11. The electrical components 22 include a battery device 21 and a control module 20, which is used to electrically control the battery device 21. The thermal management module 30 is located above the first housing wall 111 and is used to regulate the temperature of the battery device 21. The connecting pipe 40 passes through the first housing wall 111 in a vertical direction Y, connecting the battery device 21 and the thermal management module 30, and is used to transport coolant. The energy storage device 1 also includes a sealing structure 50, which is used to seal the gap between the connecting pipe 40 and the first housing wall 111.

[0100] In some embodiments, the dimensions of the container 10 may be equal to those of a standard shipping container.

[0101] A standard container can be a container of the standard size used in transportation, such as 20 feet, 30 feet, 40 feet, or 45 feet. Standard containers meet the corresponding standards, and their length, width, and height have corresponding dimensions.

[0102] A standard 20-foot container can have the following dimensions: length 6058mm, tolerance 0mm-6mm; width 2438mm, tolerance 0mm-5mm; and height 2896mm, 2591mm, or no greater than 2438mm, with a tolerance of 0mm-5mm.

[0103] A standard 30-foot container can have the following dimensions: length 9125mm, tolerance 0mm-10mm; width 2438mm, tolerance 0mm-5mm; and height 2896mm, 2591mm, or no more than 2438mm, with a tolerance of 0mm-5mm.

[0104] A standard 40-foot container can have the following dimensions: length 12192mm, tolerance 0mm-10mm; width 2438mm, tolerance 0mm-5mm; and height 2896mm, 2591mm, or no more than 2438mm, with a tolerance of 0mm-5mm.

[0105] A standard 45-foot container can have the following dimensions: length 13716mm, tolerance 0mm-10mm; width 2438mm, tolerance 0mm-5mm; and height 2591mm or 2896mm, tolerance 0mm-5mm.

[0106] In some embodiments, the dimensions of the container 10 corresponding to the dimensions of a standard container refer to the dimensions of the container 10 along the length direction corresponding to the dimensions of the standard container along the length direction, the dimensions of the container 10 along the width direction corresponding to the dimensions of the standard container along the width direction, and the dimensions of the container 10 along the height direction corresponding to the dimensions of the standard container along the height direction.

[0107] In some embodiments, the housing 10 of the energy storage device 1 can be a standard container, or the housing 10 can be manufactured according to the dimensions of a standard container.

[0108] During transportation, standard containers usually have corresponding transportation specifications. Especially during sea transportation, the transport ship has a placement area for each standard container, and the size of the container 10 corresponds to the size of the standard container, which facilitates the transportation of the energy storage device 1.

[0109] In some embodiments, at least one of the dimensions of the container 10 in the length direction, width direction, and height direction may be different from the dimensions corresponding to a standard container.

[0110] In some embodiments, only one of the dimensions of the container 10 along its length, width, and height may be different from the dimensions corresponding to a standard container, while the dimensions of the other two may be equal to the dimensions corresponding to the two dimensions of a standard container. For example, the dimensions of the container 10 along its length, width, and height may all be different from the dimensions corresponding to a standard container.

[0111] In some embodiments, two of the dimensions of the container 10 along its length, width, and height may not be equal to the dimensions of two corresponding to a standard container, while the dimension of the third may be equal to the dimensions of a standard container. For example, the dimensions of the container 10 along its length, width, and height may all be equal to the dimensions of a standard container.

[0112] In some embodiments, the dimensions of the container 10 along the length direction, the width direction, and the height direction are not equal to the dimensions corresponding to a standard container.

[0113] In some embodiments, when the dimensions of the container 10 are not equal to the dimensions corresponding to a standard container, the dimensions of the container 10 may be smaller than the dimensions corresponding to a standard container; or the dimensions of the container 10 may be larger than the dimensions corresponding to a standard container. For example, the dimensions of the container 10 along the height direction may be smaller than the dimensions of the standard container along the height direction, the dimensions of the container 10 along the width direction may be smaller than the dimensions of the standard container along the height direction, or the dimensions of the container 10 along the length direction may be smaller than the dimensions of the standard container along the height direction.

[0114] In some embodiments, depending on the usage scenario of the energy storage device 1, if the power demand is large, the size of the housing 10 of the energy storage device 1 can be increased so that the housing 10 can accommodate more battery devices 21, thereby increasing the energy storage capacity of the energy storage device 1.

[0115] In some embodiments, if the power demand is low, the number of battery devices 21 can be reduced, and the size of the energy storage device 1 housing 10 can be reduced to reduce space waste.

[0116] In some embodiments, the housing 10 may be made of stainless steel, alloy, or the like.

[0117] In some embodiments, there may be multiple battery devices 21, which may be connected in series or in parallel to form a group of battery devices 21. The multiple battery devices 21 may be arranged in a vertical Y direction, and a current-collecting component may be provided at the bottom of the multiple battery devices 21 to collect the current of the multiple battery devices 21 and output it.

[0118] In some embodiments, the number of battery devices 21 can be multiple, and the multiple battery devices 21 can be arranged along the horizontal direction X. The multiple battery devices 21 can be connected in series or in parallel.

[0119] In some embodiments, the horizontal direction can be represented by the direction indicated by the letter X in the figure, and the vertical direction can be represented by the direction indicated by the letter Y in the figure. The vertical direction Y can be parallel to the direction of gravity, and the vertical direction Y can be perpendicular to the horizontal direction X.

[0120] In some embodiments, the horizontal direction X can be parallel to the length or width direction of the housing 10, and the vertical direction Y can be parallel to the height direction of the housing 10.

[0121] In some embodiments, the battery device 21 may have a first coolant inlet and a first coolant outlet. The coolant enters the cooling channel of the battery device 21 from the first coolant inlet, exchanges heat with the battery cells in the battery device 21, and then flows out from the first coolant outlet.

[0122] In some embodiments, there may be two connecting pipes 40. One connecting pipe 40 connects the thermal management module 30 and the coolant inlet to deliver the coolant in the thermal management module 30 from the coolant inlet to the battery device 21. The other connecting pipe 40 connects the thermal management module 30 and the coolant outlet to deliver the coolant after heat exchange in the battery device 21 from the coolant outlet to the thermal management module 30.

[0123] In some embodiments, the connecting tube 40 can be connected to the thermal management module 30 and the battery device 21 via a quick-connect connection. That is, quick-connect connectors are provided at both ends of the connecting tube 40, and quick-connect connectors are also provided at the thermal management module 30 and the battery device 21. The two quick-connect connectors of the connecting tube 40 are connected to the quick-connect connectors of the thermal management module 30 and the battery device 21, respectively.

[0124] In some embodiments, coolant may be used to cool the battery device 21.

[0125] In some embodiments, the thermal management module 30 may be disposed within the housing 10.

[0126] In some embodiments, the thermal management module 30 may include a pumping device for delivering coolant and providing power for the delivery of coolant.

[0127] In some embodiments, the thermal management module 30 may store coolant to deliver the coolant stored in the thermal management component to the battery device 21, and store the coolant output by the battery device 21 during heat exchange cycles.

[0128] In some embodiments, the housing 10 may include a first compartment 11, the battery device 21 may be disposed inside the first compartment 11, and the thermal management module 30 may be disposed outside the first compartment 11.

[0129] In some embodiments, the first compartment 11 includes a first box wall 111. During the use of the energy storage device 1, the first box wall 111 can be located above the battery device 21, and the thermal management module 30 can be located above the first box wall 111. That is, the first box wall 111 separates the thermal management module 30 and the battery device 21. The thickness direction of the first box wall 111 can be parallel to the vertical direction Y. When the connecting pipe 40 connects the thermal management module 30 and the battery device 21, a part of the connecting pipe 40 needs to pass through the first box wall 111.

[0130] It should be noted that there can be multiple battery devices 21, and all of the multiple battery devices 21 can be located below the first box wall 111, or at least some of the battery devices 21 can be located below the first box wall 111. That is, the first box wall 111 can be the highest box wall of the first compartment 11 in the vertical direction Y, or one or several box walls of the first compartment 11 can be located above the first box wall 111 in the vertical direction Y.

[0131] In some embodiments, the first compartment 11 may include a battery compartment 11a and an electrical compartment 11b. The battery device 21 is disposed in the battery compartment 11a, wherein the battery device 21 may be entirely located in the battery compartment 11a, or the battery device 21 may be partially located in the battery compartment 11a and partially located in the electrical compartment 11b. The energy storage device 1 may include a control module 20, which may be located in the electrical compartment 11b. The control module may be electrically connected to the battery device 21 for electrically controlling the battery device 21.

[0132] The connecting pipe 40 can enter the first compartment 11 from the first box wall 111, pass through the electrical compartment 11b, and then enter the battery compartment 11a to connect with the battery device 21. That is, the electrical compartment 11b and the control module 20 located in the electrical compartment 11b are located directly below the thermal management module 30, and the battery compartment 11a and the battery device 21 located in the battery compartment 11a are located below the side of the thermal management module 30, or a part of the battery compartment 11a and a part of the battery device 21 located in the battery compartment 11a are located below the side of the thermal management module 30, and the other part of the battery compartment 11a and the other part of the battery device 21 located in the battery compartment 11a are located above the side of the thermal management module 30. Alternatively, the connecting pipe 40 can enter the first compartment 11 from the first box wall 111 and directly enter the battery compartment 11a to connect with the battery device 21.

[0133] In some embodiments, the connecting pipe 40 may extend entirely along the vertical direction Y. Alternatively, a portion of the connecting pipe 40 may extend along the vertical direction Y, and another portion of the connecting pipe 40 may extend along the horizontal direction X.

[0134] In some embodiments, the connecting pipe 40 can be integrally formed, wherein the connecting pipe 40 may include a first section 41, the first section 41 passing through the first box wall 111, that is, part of the first section 41 may be located outside the first compartment 11, this part may be connected to the thermal management module 30, part of the first section 41 may be located inside the first box wall 111, and part of the first section 41 may be located inside the first compartment 11.

[0135] In some embodiments, the first housing wall 111 may be provided with a through hole, which extends through the two surfaces of the first housing wall 111 in the thickness direction along the vertical direction Y. A first segment 41 passes through the through hole to connect the thermal management module 30 and the battery device 21.

[0136] It is conceivable that the outer diameter of the first section 41 can be approximately equal to the inner diameter of the through hole. However, in order to facilitate the installation of the connecting pipe 40, there is still a gap between the outer surface of the first section 41 and the inner surface of the through hole. Liquid may enter the interior of the first chamber 11 from the outside through this gap, which may cause the liquid to come into contact with the battery device 21 and cause the battery device 21 to short circuit.

[0137] Therefore, a sealing structure 50 is provided between the first section 41 and the first tank wall 111 to reduce the risk of liquid entering the first compartment 11.

[0138] In some embodiments, the sealing structure 50 may be disposed between the outer surface of the first segment 41 and the inner surface of the through hole. The sealing structure 50 may also be disposed on the outer surface of the first housing wall 111, so that after the first segment 41 passes through the through hole, it seals the opening of the through hole on the outer surface of the first housing wall 111. The sealing structure 50 may also be disposed on the inner surface of the first housing wall 111, so that after the first segment 41 passes through the through hole, it seals the opening of the through hole on the inner surface of the first housing wall 111.

[0139] It should be noted that the outer surface of the first box wall 111 can be the surface of the first box wall 111 facing the thermal management module 30 in the vertical direction Y, and the inner surface of the first box wall 111 can be the surface of the first box wall 111 facing away from the thermal management module 30 in the vertical direction Y.

[0140] In some embodiments, the sealing structure 50 blocks the gap between the outer surface of the first segment 41 and the inner surface of the through hole.

[0141] The technical solution of this application embodiment, by placing the thermal management module 30 above the first chamber wall 111, allows the thermal management module 30 to share the floor space with the chamber 10, thus saving the floor space of the energy storage device 1. During charge-discharge cycles, the battery device 21 experiences temperature increases. Excessive temperature can affect the charging and discharging of the battery device 21 and may lead to thermal runaway. Connecting the battery device 21 and the thermal management module 30 via the connecting pipe 40 enables temperature regulation of the battery device 21, improving the reliability of the energy storage device 1. The coolant after heat exchange with the battery device 21 typically flows back to the thermal management module 30. The thermal management module 30 needs to be connected to the outside environment for heat dissipation. Sealing the gap between the connecting pipe 40 and the first chamber wall 111 using the sealing structure 50 reduces the risk of external liquid entering the first chamber 11 and causing a short circuit in the battery device 21, further improving the reliability of the energy storage device 1.

[0142] Please refer to Figure 6, which is a schematic diagram of the structure of the first box wall provided in some embodiments of this application. In some embodiments, the energy storage device 1 further includes a heat insulation member 60, and a first cavity 1111 is formed inside the first box wall 111, with the heat insulation member 60 disposed in the first cavity 1111.

[0143] In some embodiments, the insulation component 60 may be insulating rock wool, glass wool, polyurethane foam, etc.

[0144] The charging and discharging performance of the battery device 21 is temperature-dependent. When the temperature of the battery device 21 is too high or too low, it can easily lead to low charging and discharging efficiency or even malfunction of the battery device 21.

[0145] Therefore, in some embodiments, the insulation element 60 can have a good effect on blocking heat transfer. The first box wall 111 can have a certain thickness in the vertical direction Y, and a first cavity 1111 is formed inside the first box wall 111. The insulation element 60 is provided in the first cavity 1111 to isolate the inside and outside of the first compartment 11, reduce the influence of the external temperature of the first compartment 11 on the internal temperature of the first compartment 11, and reduce the influence of the external temperature of the first compartment 11 on the temperature of the battery device 21.

[0146] In some embodiments, the first compartment 11 may include a first box wall 111 and a plurality of other box walls, the first box wall 111 and the plurality of other box walls together enclosing the internal space of the first compartment 11, and the battery device 21 is disposed in the internal space of the first compartment 11. Insulation members 60 may be disposed inside the first box wall 111 and inside the plurality of other box walls.

[0147] In some embodiments, a portion of the space of the first cavity 1111 may be provided with a heat insulation member 60, that is, there is a gap between the heat insulation member 60 and the portion of the inner wall surface forming the first cavity 1111.

[0148] In some embodiments, the entire space of the first cavity 1111 may be provided with heat insulation members 60. The heat insulation members 60 can be squeezed into the first cavity 1111. After being placed in the first cavity 1111, the heat insulation members 60 are reset to fill the space of the first cavity 1111.

[0149] In some embodiments, the first box wall 111 may be formed by a plurality of plates, wherein some plates are spaced apart in the vertical direction Y and some plates are spaced apart in the horizontal direction X, thereby forming a first cavity 1111.

[0150] In some embodiments, the first box wall 111 may be cast or extruded to form a first cavity 1111 with an opening, and a plate may be provided to close the opening.

[0151] The technical solution of this application embodiment provides a heat insulation component 60 inside the first box wall 111. The heat insulation component 60 separates the inside and outside of the first compartment 11, so that the heat exchange between the outside and inside of the first compartment 11 is reduced, thereby reducing the influence of the outside of the first compartment 11 on the temperature inside the first compartment 11, thereby reducing the impact of temperature on the battery device 21 and improving the reliability of the energy storage device 1.

[0152] Referring to Figures 4 and 6, in some embodiments, a second cavity 1112 is formed inside the first box wall 111. The first box wall 111 includes a partition wall 1113, which separates the first cavity 1111 and the second cavity 1112. A portion of the connecting pipe 40 is located in the second cavity 1112, and the connecting pipe 40 is spaced apart from the partition wall 1113.

[0153] In some embodiments, the partition wall 1113 may extend along the vertical direction Y, and the thickness direction of the partition wall 1113 may be perpendicular to the vertical direction Y.

[0154] In some embodiments, the partition wall 1113 may have two surfaces in the thickness direction, one surface of which may be used to form a first cavity 1111 and the other surface of which may be used to form a second cavity 1112.

[0155] Since the connecting pipe 40 is used to transport coolant, the temperature inside the connecting pipe 40 is lower and the temperature outside the connecting pipe 40 is higher. Due to the temperature difference between the inside and outside of the connecting pipe 40, condensation may form on the outer surface of the connecting pipe 40. The condensation may enter the first cavity 1111 through the partition wall 1113, thereby wetting the insulation component 60 and affecting the heat insulation effect of the insulation component 60.

[0156] Therefore, in some embodiments, the partition wall 1113 is spaced apart from the connecting pipe 40 to reduce the risk of condensate on the outer surface of the connecting pipe 40 coming into contact with the partition wall 1113.

[0157] In some embodiments, the first box wall 111 may be provided with a through hole for the connecting pipe 40 to pass through, the through hole may communicate with the second cavity 1112, so that the connecting pipe 40 passes through the through hole and a portion of the first section 41 of the connecting pipe 40 is located in the second cavity 1112.

[0158] In the technical solution of this application embodiment, the connecting pipe 40 transports coolant. The temperature inside the connecting pipe 40 is low. When the outer surface of the connecting pipe 40 comes into contact with air, condensation will form on the outer surface of the connecting pipe 40. A portion of the connecting pipe 40 is located in the second cavity 1112. The first cavity 1111 and the second cavity 1112 are separated by a partition wall 1113. The connecting pipe 40 and the partition wall 1113 are spaced apart to reduce the risk of condensation generated on the outer surface of the connecting pipe 40 penetrating into the first cavity 1111 through the partition wall 1113. This reduces the risk of condensation wetting the insulation component 60 and affecting its heat insulation effect, thereby improving the reliability of the energy storage device 1.

[0159] Please refer to Figures 4 and 6, and then to Figure 5. Figure 5 is a schematic diagram of the assembly of the sealing structure and connecting pipe provided in some embodiments of this application. In some embodiments, the first box wall 111 is provided with a first opening 1114, which communicates with the second cavity 1112, and the sealing structure 50 is disposed in the second cavity 1112.

[0160] In some embodiments, the first box wall 111 may include two plates arranged opposite each other along the vertical direction Y, and the two plates are respectively connected to the two ends of the partition wall 1113 in the vertical direction Y, thereby forming a first cavity 1111 and a second cavity 1112.

[0161] In some embodiments, the sealing structure 50 may be disposed within the second cavity 1112. The first housing wall 111 may be provided with a through hole for the connecting pipe 40 to pass through. Since the inner diameter of the through hole needs to be approximately the same as the outer diameter of the connecting pipe 40, that is, the inner diameter of the through hole is small, the space for installing the sealing structure 50 through the through hole is small. Therefore, a first opening 1114 is provided in the first housing wall 111. The first opening 1114 communicates with the second cavity 1112 in the vertical Y direction, so that the sealing structure 50 can be installed in the second cavity 1112.

[0162] In some embodiments, the first opening 1114 may be disposed on the upper surface of the first box wall 111 in the vertical direction Y, that is, the sealing structure 50 may be disposed on the upper surface of the lower plate of the two plates.

[0163] In some embodiments, the first opening 1114 may be disposed on the lower surface of the first box wall 111, that is, the sealing structure 50 may be disposed on the lower surface of the upper plate of the two plates.

[0164] In the technical solution of this application embodiment, the sealing structure 50 is disposed in the second cavity 1112. By providing a first opening 1114 communicating with the second cavity 1112 in the first box wall 111, an operating space is provided for the installation of the sealing structure 50, which helps to improve the convenience of the installation of the sealing structure 50.

[0165] Referring to Figures 4 and 6, in some embodiments, the first box wall 111 further includes a first wall 1115 and a second wall 1116. The first wall 1115 and the second wall 1116 are arranged opposite each other in the vertical direction Y, with the first wall 1115 located below the second wall 1116. The first opening 1114 is disposed on the first wall 1115. A partition wall 1113 surrounds the first opening 1114. One end of the partition wall 1113 is connected to the first wall 1115, and the other end is connected to the second wall 1116. The partition wall 1113 has a first surface 1113a facing the connecting pipe 40 and a second surface 1113b facing away from the connecting pipe 40. The first surface 1113a is spaced apart from the connecting pipe 40. The first surface 1113a and the second wall 1116 form a second cavity 1112. The second surface 1113b, the first wall 1115, and the second wall 1116 form a first cavity 1111.

[0166] In some embodiments, the first box wall 111 may include a first wall 1115, a second wall 1116 and a third wall 1117. The first wall 1115 and the second wall 1116 are arranged opposite each other in the vertical direction Y. The first wall 1115 is located below the second wall 1116, and the first opening 1114 is disposed on the first wall 1115, that is, the first opening 1114 is disposed below the second cavity 1112.

[0167] There can be multiple third walls 1117. The third walls 1117 can extend along the vertical direction Y. The third walls 1117 can surround the outer perimeter of the first wall 1115. In the vertical direction Y, one end of the third wall 1117 can be connected to the first wall 1115, and the other end can be connected to the outer perimeter of the second wall 1116.

[0168] The first wall 1115 is provided with a first opening 1114. There can be multiple partition walls 1113. The partition walls 1113 can extend along the vertical direction Y. The first wall 1115 can surround the outer perimeter of the first opening 1114. In the vertical direction Y, one end of the partition wall 1113 can be connected to the first wall 1115, and the other end can be connected to the second wall 1116.

[0169] The partition wall 1113 can be connected to the first wall 1115 and the second wall 1116 by welding or bolting.

[0170] In some embodiments, the partition wall 1113 may be spaced apart from the third wall 1117, and the second surface 1113b of the partition wall 1113 facing away from the connecting pipe 40, the surface of the first wall 1115 facing the second wall 1116, the surface of the second wall 1116 facing the first wall 1115, and the surface of the third wall 1117 facing the partition wall 1113 may together form the first cavity 1111.

[0171] The first surface 1113a of the partition wall 1113 facing the connecting pipe 40 and the surface of the second wall 1116 facing the first wall 1115 can together form a second cavity 1112 with a first opening 1114.

[0172] In some embodiments, with the vertical direction Y as the projection direction, the projection of the first wall 1115 can cover the projection of the partition wall 1113. That is, the first wall 1115 can have a main body and a flange, the main body and the flange are connected, the main body, the second wall 1116, the third wall 1117 and the partition wall 1113 form a first cavity 1111, the flange is located outside the first cavity 1111, and the flange is welded to the partition wall 1113 so that the partition wall 1113 can be connected to the first wall 1115.

[0173] The technical solution of this application embodiment forms a second cavity 1112 by partition wall 1113 and second wall 1116, and forms a first cavity 1111 by partition wall 1113, first wall 1115 and second wall 1116. The first surface 1113a of partition wall 1113 is spaced apart from connecting pipe 40, which reduces the risk that condensate on the surface of connecting pipe 40 will wet the insulation component 60 and affect the heat insulation effect of the insulation component 60, and helps to improve the reliability of energy storage device 1.

[0174] Referring to Figures 4 and 6, in some embodiments, the first box wall 111 further includes a reinforcing wall 1118, which is disposed in the second cavity 1112 and connects at least two inner wall surfaces of the second cavity 1112.

[0175] In some embodiments, the reinforcing wall 1118 may extend in the vertical direction Y, and the reinforcing wall 1118 is located within the second cavity 1112.

[0176] In some embodiments, the reinforcing wall 1118 may connect to the three inner wall surfaces of the second cavity 1112. The upper end of the reinforcing wall 1118 in the vertical direction Y may be connected to the second wall 1116, and the two ends of the reinforcing wall 1118 in the horizontal direction X may be connected to two oppositely arranged third walls 1117 respectively.

[0177] In some embodiments, the reinforcing wall 1118 may connect to the two inner wall surfaces of the second cavity 1112. The upper end of the reinforcing wall 1118 in the vertical direction Y may be connected to the second wall 1116, and the upper end of the reinforcing wall 1118 in the horizontal direction X may be connected to a third wall 1117.

[0178] The technical solution of this application embodiment, by providing a reinforcing wall 1118 in the second cavity 1112, helps to improve the structural strength of the first box wall 111, reduce the risk of damage to the battery cells caused by damage to the first box wall 111, and improve the reliability of the energy storage device 1.

[0179] Please refer to Figures 4 to 6. In some embodiments, there are two connecting pipes 40. One of the two connecting pipes 40 is used for the thermal management module 30 to supply coolant to the battery device 21, and the other is used for the battery device 21 to supply coolant to the thermal management module 30. The two connecting pipes 40 are spaced apart, and the reinforcing wall 1118 separates the two connecting pipes 40.

[0180] In some embodiments, there may be two connecting pipes 40. One connecting pipe 40 connects the thermal management module 30 and the coolant inlet to deliver the coolant in the thermal management module 30 from the coolant inlet to the battery device 21. The other connecting pipe 40 connects the thermal management module 30 and the coolant outlet to deliver the coolant after heat exchange in the battery device 21 from the coolant outlet to the thermal management module 30.

[0181] In some embodiments, the partition wall 1113 is disposed within the second cavity 1112, which can divide the second cavity 1112 into two chambers, one of the two connecting pipes 40 being disposed in one chamber and the other of the two connecting pipes 40 being disposed in the other chamber.

[0182] The technical solution of this application embodiment separates the two connecting pipes 40 by reinforcing wall 1118. On the one hand, when installing the connecting pipes 40, the two connecting pipes 40 can be installed in corresponding spaces respectively, reducing the risk of mutual interference between the two connecting pipes 40 during installation and improving the convenience of installation. On the other hand, during the use or transportation of the energy storage device 1, the two connecting pipes 40 are located in corresponding spaces respectively, reducing the risk of mutual interference between the two connecting pipes 40 and causing damage to the connecting pipes 40, and improving the reliability of the energy storage device 1.

[0183] Referring to Figures 4 to 6, in some embodiments, the connecting pipe 40 includes a first segment 41 and a second segment 42 connected to each other. The first segment 41 passes through the first box wall 111 in the vertical direction Y, and the second segment 42 is located in the first compartment 11. The second segment 42 is configured to deform to change the position of the end of the second segment 42 opposite to the first segment 41.

[0184] In some embodiments, the first segment 41 and the second segment 42 can be quick-connected or interference-fitted.

[0185] In some embodiments, the connecting tube 40 may be formed by injection molding the second section 42 at one end of the first section 41, or by casting the first section 41 at one end of the second section 42.

[0186] In some embodiments, the second segment 42 may extend in the vertical direction Y, and the second segment 42 may deform such that after one end of the second segment 42 is connected to the first segment 41, it deforms in the horizontal direction X, so that the position of the end of the second segment 42 away from the first segment 41 changes.

[0187] In some embodiments, the second segment 42 may be a corrugated pipe, a metal hose, or a plastic hose.

[0188] The technical solution of this application embodiment can change the position of the end of the second segment 42 away from the first segment 41 by deforming the second segment 42. When the position of the component connected to the second segment 42 is offset or there is a large tolerance, the position of the second segment 42 can be adjusted by deforming the second segment 42, which helps to improve the convenience of connecting the second segment 42 with other components.

[0189] Please refer to Figures 4 to 6. In some embodiments, the second segment 42 is configured as a bellows.

[0190] In some embodiments, the second segment 42 may be a plastic corrugated pipe.

[0191] In some embodiments, the second segment 42 may be a metal bellows.

[0192] During transportation or use of the energy storage device 1, external vibrations may be transmitted to the energy storage device 1, causing the second section 42 to shake. In some embodiments, the second section 42 can be a metal corrugated pipe or a rigid plastic corrugated pipe to reduce the risk of the second section 42 shaking interfering with the internal structure of the energy storage device 1.

[0193] In the technical solution of this application embodiment, the bellows can deform to change the relative positions of its two ends. By setting the second segment 42 as a bellows and adjusting the position of the end of the second segment 42 away from the first segment 41, the convenience of connecting the second segment 42 with other components is improved.

[0194] Please refer to Figures 5 and 6, and then to Figure 7, which is an enlarged view of point A in Figure 6. In some embodiments, the sealing structure 50 includes a sealing member 51 and a support member 52. The support member 52 and the sealing member 51 are sleeved around the outer periphery of the connecting pipe 40 along the vertical direction Y. The sealing member 51 is disposed between the support member 52 and the first box wall 111. The support member 52 cooperates with the first box wall 111 to clamp the sealing member 51.

[0195] In some embodiments, the seal 51 may be made of plastic.

[0196] In some embodiments, the support member 52 may be made of metal.

[0197] In some embodiments, both the support member 52 and the seal member 51 can be plate-shaped. Both the support member 52 and the seal member 51 can be sleeved around the outer periphery of the connecting pipe 40. The support member 52 can be welded or cast to the connecting pipe 40, and the seal member 51 can be injection molded around the outer periphery of the connecting pipe 40.

[0198] In some embodiments, in the vertical direction Y, the seal 51 may be disposed above the support 52, and the sealing structure 50 may be disposed on the lower surface of the second wall 1116.

[0199] In some embodiments, the support member 52 can be connected to the second wall 1116. During the connection process, the distance between the support member 52 and the second wall 1116 in the vertical direction Y gradually decreases, so that the seal member 51 is clamped, so that the seal member 51 seals the gap between the outer peripheral surface of the connecting pipe 40 and the inner peripheral surface of the through hole.

[0200] The technical solution of this application embodiment uses the support member 52 to cooperate with the first box wall 111 to clamp the sealing member 51, so that the sealing member 51 can better seal the gap between the connecting pipe 40 and the first box wall 111, reducing the risk of external liquid entering the first chamber 11 and causing a short circuit in the battery device 21, which is beneficial to improving the reliability of the energy storage device 1.

[0201] Referring to Figures 5 to 7, in some embodiments, the first housing wall 111 is provided with a mounting hole 1119, and the energy storage device 1 also includes a connector 70, which passes through the mounting hole 1119 and connects to the support member 52, so that the support member 52 and the first housing wall 111 clamp the sealing member 51.

[0202] In some embodiments, the first wall 111 may be provided with mounting holes 1119, which may penetrate the two surfaces of the second wall 1116 in the vertical direction Y.

[0203] The sealing element 51 may be provided with a channel, which can penetrate the two surfaces of the sealing element 51 in the vertical Y direction.

[0204] The support member 52 may be provided with a blind hole, and the blind hole is provided with a thread.

[0205] The connector 70 can be inserted into the mounting hole 1119 and pass through the channel of the seal 51, and then be threaded into the blind hole of the support 52, thereby connecting the support 52 and the first box wall 111, and clamping the seal 51 through the support 52 and the first box wall 111.

[0206] In some embodiments, the connector 70 may be a screw, bolt, etc.

[0207] The technical solution of this application embodiment connects the support member 52 and the first box wall 111 through the connector 70, which facilitates the connection between the support member 52 and the first box wall 111 to clamp the sealing member 51, reducing the risk of external liquid entering the first chamber 11 and causing a short circuit in the battery device 21, and improving the reliability of the energy storage device 1.

[0208] Referring to Figures 5 to 7, in some embodiments, the connector 70 includes a connecting portion 71 and a fastening portion 72. The connecting portion 71 passes through the mounting hole 1119, one end of which is threadedly connected to the support member 52, and the other end is engaged with the fastening portion 72. A gap exists between the outer surface of the connecting portion 71 and the inner wall surface of the mounting hole 1119, and the fastening portion 72 is confined to the side of the first housing wall 111 opposite to the support member 52.

[0209] In some embodiments, the outer peripheral surface of the connecting part 71 may be provided with threads, the support member 52 may be provided with threaded holes, and the connecting part 71 and the support member 52 are threadedly connected.

[0210] In some embodiments, the fastening part 72 may be integrally formed with the connecting part 71, or the fastening part 72 may be a nut.

[0211] In some embodiments, the connecting portion 71 passes through the mounting hole 1119, and the fastening portion 72 is connected to the end of the connecting portion 71 away from the support member 52 and abuts against the side of the first box wall 111 away from the support member 52 to limit the connection portion 71.

[0212] In some embodiments, a rivet nut may be provided on the side of the support member 52 away from the fastening part 72, and the connecting part 71 is connected to the rivet nut after passing through the mounting hole 1119. The fastening part 72 is limited to the side of the first box wall 111 away from the support member 52, thereby realizing the clamping of the sealing member 51.

[0213] In some embodiments, the connecting part 71 can be cylindrical, and the mounting hole 1119 can be a circular hole. The inner diameter of the mounting hole 1119 can be larger than the outer diameter of the connecting part 71, so that when the connector 70 is installed, the connecting part 71 can move within the mounting hole 1119. When the position of the connecting tube 40 is offset, the support 52 is offset, and the connector 70 can adapt to the adjustment position within the mounting hole 1119.

[0214] The inner diameter of the mounting hole 1119 can be 10mm, and the outer diameter of the connecting part 71 can be 6mm.

[0215] The technical solution of this application embodiment connects the first box wall 111 and the support member 52 through the connecting part 71 and the limiting part, which facilitates the support member 52 and the first box wall 111 to clamp the sealing member 51. At the same time, by providing a gap between the outer surface of the connecting part 71 and the inner wall surface of the mounting hole 1119, it is convenient to adjust the installation position of the connecting member 70. Thus, by adjusting the installation position of the support member 52, it is convenient to adjust the installation position of the connecting pipe 40. When the position of the component connected to the connecting pipe 40 is offset or there is a large tolerance, the position of the connecting pipe 40 can be adjusted, which helps to improve the convenience of connecting the connecting pipe 40 to other components.

[0216] Referring to Figure 3, in some embodiments, the housing 10 further includes a second compartment 12, which is located above the first housing wall 111. The thermal management module 30 is housed in the second compartment 12, and an air outlet 121 is provided on the top wall of the second compartment 12.

[0217] In some embodiments, the second compartment 12 may be located above the first compartment wall 111.

[0218] In some embodiments, the second compartment 12 may be located above a portion of the first compartment 11, another portion of the first compartment 11 may be located below the second compartment 12, or another portion of the first compartment 11 may be flush with the second compartment 12, or another portion of the first compartment 11 may be higher than the second compartment 12 in the vertical direction Y.

[0219] In some embodiments, the thermal management module 30 may include a heat sink, which may be a fan. The heat sink is configured to correspond with the air outlet 121 so that the thermal management module 30 can dissipate heat to the outside through the air outlet 121.

[0220] The second compartment 12 may also be provided with an air inlet, which may be located on the wall of the second compartment 12. The air inlet may be located on the side wall of the second compartment, which may be adjacent to the first compartment 11, so that the interior of the second compartment 12 can be connected to the outside.

[0221] The technical solution of this application embodiment is to set the thermal management module 30 in the second compartment 12 and isolate the thermal management module 30 from the outside through the bulkhead of the second compartment 12, thereby reducing the risk of damage to the thermal management module 30 and improving the reliability of the energy storage device 1.

[0222] In some embodiments, the air outlet 121 can connect the interior and exterior of the second compartment 12.

[0223] In some embodiments, the second compartment 12 may be provided with an air outlet 121, which may be provided on the wall of the second compartment 12 and connects two surfaces of the wall in its thickness direction.

[0224] In some embodiments, the air outlet 121 may be disposed on the wall of the second compartment 12 opposite to the first compartment wall 111 in the vertical direction Y.

[0225] The technical solution of this application embodiment improves the heat dissipation effect of the thermal management module 30 by setting an air outlet 121 in the second compartment 12, which is conducive to improving the heat exchange effect between the thermal management module 30 and the battery device 21, thereby improving the reliability of the energy storage device 1.

[0226] The energy storage device 1 of the second aspect embodiment is described below.

[0227] Please refer to Figures 8 and 9. Figure 8 is a schematic diagram of an energy storage device provided in some embodiments of this application, and Figure 9 is a schematic diagram of a connecting pipe passing through a first box wall provided in some embodiments of this application. This application also provides an energy storage device 1, which includes an insulation component 60, a box body 10, electrical components 22, a thermal management module 30, and a connecting pipe 40. The box body 10 includes a first compartment 11, and the first compartment 11 includes a first box wall 111. At least a portion of the electrical components 22 is disposed in the first compartment 11. The electrical components 22 include a battery device 21 and a control module 20, the control module 20 being used for electrical control of the battery device 21. The thermal management module 30 is used to regulate the temperature of the battery device 21. The connecting pipe 40 connects the battery device 21 and the thermal management module 30, and the connecting pipe 40 delivers coolant. The first box wall 111 includes a partition wall 1113, which is disposed inside the first box wall 111 to divide the internal space of the first box wall 111 into a first cavity 1111 and a second cavity 1112. The heat insulation component 60 is disposed in the first cavity 1111. The connecting pipe 40 passes through the first box wall 111 and is at least partially located in the second cavity 1112. The connecting pipe 40 located in the second cavity 1112 is spaced apart from the partition wall 1113.

[0228] In some embodiments, the first compartment 11 can be a cuboid structure, and the first box wall 111 can be any one of the boxes of the first compartment 11. For example, the first box wall 111 can be the box wall of the first compartment 11 in the length direction, and the portion of the connecting pipe 40 located in the second cavity 1112 can extend along the length direction of the first compartment 11; or the first box wall 111 can be the box wall of the first compartment 11 in the width direction, and the portion of the connecting pipe 40 located in the second cavity 1112 can extend along the width direction of the first compartment 11; or the first box wall 111 can be the box wall of the first compartment 11 in the height direction, and the portion of the connecting pipe 40 located in the second cavity 1112 can extend along the height direction of the first compartment 11. That is, the extension direction of the portion of the connecting pipe 40 located in the second cavity 1112 can be parallel to the thickness direction of the first box wall 111.

[0229] It should be noted that, compared with the embodiment of the first aspect, the second aspect embodiment differs only in the extension direction of the connecting pipe 40 and the position of the first box wall 111. The structure of the energy storage device 1 described here and below is the same as that of the energy storage device 1 described in the first aspect embodiment. The parts that are the same as those in the first aspect embodiment will not be described otherwise. In the second aspect embodiment, the vertical direction Y in the first aspect embodiment is replaced by the thickness direction of the first box wall 111.

[0230] In the technical solution of this application embodiment, the battery device 21 experiences a temperature increase during charge-discharge cycles. Excessive temperature can affect the charging and discharging of the battery device 21 and may lead to thermal runaway. Connecting the battery device 21 and the thermal management module 30 via a connecting pipe 40 enables temperature regulation of the battery device 21, improving the reliability of the energy storage device 1. By providing an insulation component 60 in the first cavity 1111, the interior and exterior of the first compartment 11 are separated, minimizing heat exchange between the exterior and interior of the first compartment 11. This reduces the impact of the exterior on the interior temperature of the first compartment 11, thereby reducing the temperature impact on the battery device 21 and improving the reliability of the energy storage device 1. The connecting pipe 40 delivers coolant, resulting in a lower temperature inside the connecting pipe 40. When the outer surface of the connecting pipe 40 comes into contact with air, condensation will form on its outer surface. A portion of the connecting pipe 40 is located in the second cavity 1112. The first cavity 1111 and the second cavity 1112 are separated by the partition wall 1113. The connecting pipe 40 and the partition wall 1113 are spaced apart to reduce the risk of condensate generated on the outer surface of the connecting pipe 40 penetrating into the first cavity 1111 through the partition wall 1113. This also reduces the risk of condensate wetting the insulation component 60 and affecting its heat insulation effect, thus improving the reliability of the energy storage device 1.

[0231] Please refer to Figures 8 and 9, and then to Figure 11, which is a schematic diagram of the structure of the first box wall provided in some other embodiments of this application. In some embodiments, the first box wall 111 further includes a first wall 1115 and a second wall 1116, which are disposed opposite to each other along the thickness direction of the first box wall 111. One end of the partition wall 1113 is connected to the first wall 1115, and the other end is connected to the second wall 1116. The partition wall 1113 has a first surface 1113a facing the connecting pipe 40 and a second surface 1113b facing away from the connecting pipe 40. The first surface 1113a and the second wall 1116 form a second cavity 1112, and the second surface 1113b, the first wall 1115, and the second wall 1116 form a first cavity 1111.

[0232] The technical solution of this application embodiment forms a second cavity 1112 by partition wall 1113 and second wall 1116, and forms a first cavity 1111 by partition wall 1113, first wall 1115 and second wall 1116. The first surface 1113a of partition wall 1113 is spaced apart from connecting pipe 40, which reduces the risk that condensate on the surface of connecting pipe 40 will wet the insulation component 60 and affect the heat insulation effect of the insulation component 60, and helps to improve the reliability of energy storage device 1.

[0233] Referring to Figures 9 and 11, in some embodiments, the first box wall 111 further includes a reinforcing wall 1118, which is disposed in the second cavity 1112 and connects at least two inner wall surfaces of the second cavity 1112.

[0234] The technical solution of this application embodiment, by providing a reinforcing wall 1118 in the second cavity 1112, helps to improve the structural strength of the first box wall 111, reduce the risk of damage to the battery cells caused by damage to the first box wall 111, and improve the reliability of the energy storage device 1.

[0235] Referring to Figures 9 and 11, in some embodiments, there are two connecting pipes 40. One of the two connecting pipes 40 is used for the thermal management module 30 to supply coolant to the battery device 21, and the other is used for the battery device 21 to supply coolant to the thermal management module 30. The two connecting pipes 40 are spaced apart, and the reinforcing wall 1118 separates the two connecting pipes 40.

[0236] The technical solution of this application embodiment separates the two connecting pipes 40 by reinforcing wall 1118. On the one hand, when installing the connecting pipes 40, the two connecting pipes 40 can be installed in corresponding spaces respectively, reducing the risk of mutual interference between the two connecting pipes 40 during installation and improving the convenience of installation. On the other hand, during the use or transportation of the energy storage device 1, the two connecting pipes 40 are located in corresponding spaces respectively, reducing the risk of mutual interference between the two connecting pipes 40 and causing damage to the connecting pipes 40, and improving the reliability of the energy storage device 1.

[0237] Please refer to Figures 9 and 11, and then to Figure 10, which is a schematic diagram of the assembly of the sealing structure and connecting pipe provided in some other embodiments of this application. In some embodiments, the connecting pipe 40 includes an adjustment section 43, which is located in the first compartment 11 and connected to the battery device 21. The adjustment section 43 is configured to deform to change the position of the end of the connecting pipe 40 away from the thermal management module 30.

[0238] In some embodiments, the adjusting section 43 and other parts of the connecting tube 40 can be quick-connected or interference-fitted.

[0239] In some embodiments, the connecting tube 40 may be formed by injection molding the adjustment section 43 at one end of other parts of the connecting tube 40, or by casting other parts of the connecting tube 40 at one end of the adjustment section 43.

[0240] In some embodiments, the adjusting section 43 may extend along the thickness direction of the first box wall 111, and the adjusting section 43 may deform such that after one end of the adjusting section 43 is connected to the other part of the connecting pipe 40, it deforms in a direction perpendicular to the thickness direction of the first box wall 111, so that the position of the end of the adjusting section 43 away from the other part of the connecting pipe 40 changes.

[0241] In some embodiments, the adjustment section 43 can be a corrugated pipe, a metal hose, or a plastic hose.

[0242] The technical solution of this application embodiment can change the position of the adjustment section 43 by deforming the adjustment section 43. When the position of the component connected to the adjustment section 43 is offset or there is a large tolerance, the position of the adjustment section 43 can be adjusted by deforming the adjustment section 43, which helps to improve the convenience of connecting the adjustment section 43 with other components.

[0243] Referring to Figures 9 to 11, in some embodiments, the adjustment section 43 is configured as a bellows.

[0244] In some embodiments, the adjustment section 43 may be a plastic bellows.

[0245] In some embodiments, the regulating section 43 may be a metal bellows.

[0246] During transportation or use of the energy storage device 1, external vibrations may be transmitted to the energy storage device 1, causing the regulating section 43 to sway. In some embodiments, the regulating section 43 can be a metal bellows or a rigid plastic bellows to reduce the risk of the regulating section 43 swaying interfering with the internal structure of the energy storage device 1.

[0247] In the technical solution of this application embodiment, the bellows can deform to change the relative positions of its two ends. By setting the adjusting section 43 as a bellows, the position of the adjusting section 43 can be adjusted, which facilitates the connection of the adjusting section 43 with other components.

[0248] Referring to Figures 9 and 11, in some embodiments, the first housing wall 111 has a first opening 1114, which communicates with the second cavity 1112. The energy storage device 1 also includes a sealing structure 50 disposed in the second cavity 1112, which is used to seal the gap between the connecting pipe 40 and the first housing wall 111.

[0249] In the technical solution of this application embodiment, the sealing structure 50 is disposed in the second cavity 1112. By providing a first opening 1114 communicating with the second cavity 1112 in the first box wall 111, an operating space is provided for the installation of the sealing structure 50, which helps to improve the convenience of the installation of the sealing structure 50.

[0250] Please refer to Figures 10 and 11, and then to Figure 12, which is an enlarged view of point B in Figure 11. In some embodiments, the sealing structure 50 includes a sealing member 51 and a support member 52. The support member 52 and the sealing member 51 are sleeved around the outer periphery of the connecting pipe 40. Along the thickness direction of the first box wall 111, the sealing member 51 is disposed between the support member 52 and the first box wall 111. The support member 52 cooperates with the first box wall 111 to clamp the sealing member 51.

[0251] The technical solution of this application embodiment uses the support member 52 to cooperate with the first box wall 111 to clamp the sealing member 51, so that the sealing member 51 can better seal the gap between the connecting pipe 40 and the first box wall 111, reducing the risk of external liquid entering the first chamber 11 and causing a short circuit in the battery device 21, which is beneficial to improving the reliability of the energy storage device 1.

[0252] Referring to Figure 12, in some embodiments, the first housing wall 111 is provided with a mounting hole 1119, and the energy storage device 1 also includes a connector 70, which passes through the mounting hole 1119 and connects to the support member 52, so that the support member 52 and the first housing wall 111 clamp the sealing member 51.

[0253] The technical solution of this application embodiment connects the support member 52 and the first box wall 111 through the connector 70, which facilitates the connection between the support member 52 and the first box wall 111 to clamp the sealing member 51, reducing the risk of external liquid entering the first chamber 11 and causing a short circuit in the battery device 21, and improving the reliability of the energy storage device 1.

[0254] Referring to Figures 10 to 12, in some embodiments, the connector 70 includes a connecting portion 71 and a fastening portion 72. The connecting portion 71 passes through the mounting hole 1119, one end of which is threadedly connected to the support member 52, and the other end engages with the fastening portion 72. A gap exists between the outer surface of the connecting portion 71 and the inner wall surface of the mounting hole 1119, and the fastening portion 72 is confined to the side of the first housing wall 111 facing away from the support member 52.

[0255] The technical solution of this application embodiment connects the first box wall 111 and the support member 52 through the connecting part 71 and the limiting part, which facilitates the support member 52 and the first box wall 111 to clamp the sealing member 51. At the same time, by providing a gap between the outer surface of the connecting part 71 and the inner wall surface of the mounting hole 1119, it is convenient to adjust the installation position of the connecting member 70. Thus, by adjusting the installation position of the support member 52, it is convenient to adjust the installation position of the connecting pipe 40. When the position of the component connected to the connecting pipe 40 is offset or there is a large tolerance, the position of the connecting pipe 40 can be adjusted, which helps to improve the convenience of connecting the connecting pipe 40 to other components.

[0256] Referring to Figure 2, this application embodiment also provides an energy storage system 200, which includes an energy storage converter and an energy storage device 1 provided in any of the above embodiments. The energy storage converter is used to electrically connect the power generation device 220 and the energy storage device 1.

[0257] Referring to Figure 1, this application embodiment also provides a charging network. The charging network 100 includes a charging pile 110 and an energy storage device 1 provided in any of the above embodiments. The energy storage device 1 is used to provide electrical energy to the charging pile 110.

[0258] In some embodiments, the energy storage device 1 includes a housing 10, electrical components 22, a thermal management module 30, and a connecting pipe 40. The housing 10 includes a first compartment 11, which includes a first housing wall 111 located at the top. At least a portion of the electrical components 22 is disposed in the first compartment 11. The electrical components 22 include a battery device 21 and a control module 20, the control module 20 being used to electrically control the battery device 21. The thermal management module 30 is located above the first housing wall 111 and is used to regulate the temperature of the battery device 21. The connecting pipe 40 passes through the first housing wall 111 in a vertical direction Y, connecting the battery device 21 and the thermal management module 30, and is used to deliver coolant. The energy storage device 1 also includes a sealing structure 50, which seals the gap between the connecting pipe 40 and the first housing wall 111.

[0259] In some embodiments, the control module 20 and the battery device 21 are arranged along the horizontal direction X, with the control module 20 located directly below the first housing wall 111 and the battery device 21 located on the side of the first housing wall 111. In the vertical direction Y, a portion of the battery device 21 is located above the first housing wall 111 and a portion of the battery device 21 is located below the first housing wall 111.

[0260] The technical solution of this application embodiment, by placing the thermal management module 30 above the first chamber wall 111, allows the thermal management module 30 to share the floor space with the chamber 10, thus saving the floor space of the energy storage device 1. During charge-discharge cycles, the battery device 21 experiences temperature increases. Excessive temperature can affect the charging and discharging of the battery device 21 and may lead to thermal runaway. Connecting the battery device 21 and the thermal management module 30 via the connecting pipe 40 enables temperature regulation of the battery device 21, improving the reliability of the energy storage device 1. The coolant after heat exchange with the battery device 21 typically flows back to the thermal management module 30. The thermal management module 30 needs to be connected to the outside environment for heat dissipation. Sealing the gap between the connecting pipe 40 and the first chamber wall 111 using the sealing structure 50 reduces the risk of external liquid entering the first chamber 11 and causing a short circuit in the battery device 21, further improving the reliability of the energy storage device 1.

[0261] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, include: The container includes a first compartment, the first compartment including a first container wall located at the top; Electrical components, at least partially disposed in the first compartment, include a battery device and a control module, the control module being used for electrical control of the battery device; A thermal management module is located above the first enclosure wall, and the thermal management module is used to regulate the temperature of the battery device; A connecting pipe passes vertically through the first box wall, the connecting pipe connecting the battery device and the thermal management module, and the connecting pipe is used to transport coolant; The energy storage device further includes a sealing structure for sealing the gap between the connecting pipe and the first tank wall.

2. The energy storage device according to claim 1, characterized in that, The energy storage device also includes an insulation component, and a first cavity is formed inside the first box wall, with the insulation component disposed in the first cavity.

3. The energy storage device according to claim 2, characterized in that, The first box wall has a second cavity formed inside it, and the first box wall includes a partition wall that separates the first cavity and the second cavity; A portion of the connecting pipe is located in the second cavity, and the connecting pipe is spaced apart from the partition wall.

4. The energy storage device according to claim 3, characterized in that, The first box wall is provided with a first opening, which communicates with the second cavity, and the sealing structure is provided in the second cavity.

5. The energy storage device according to claim 4, characterized in that, The first box wall also includes a first wall and a second wall, the first wall and the second wall are arranged opposite each other along the vertical direction and the first wall is located below the second wall, and the first opening is provided in the first wall; The partition wall is disposed around the first opening. One end of the partition wall is connected to the first wall and the other end is connected to the second wall. The partition wall has a first surface facing the connecting pipe and a second surface facing away from the connecting pipe. The first surface is spaced apart from the connecting pipe. The first surface and the second wall form the second cavity. The second surface, the first wall and the second wall form the first cavity.

6. The energy storage device according to any one of claims 3 to 5, characterized in that, The first box wall further includes a reinforcing wall, which is disposed in the second cavity and connects to at least two inner wall surfaces of the second cavity.

7. The energy storage device according to claim 6, characterized in that, The number of connecting pipes is two. One of the two connecting pipes is used by the thermal management module to deliver coolant to the battery device, and the other is used by the battery device to deliver coolant to the thermal management module. The two connecting pipes are arranged at intervals, and the reinforcing wall separates the two connecting pipes.

8. The energy storage device according to any one of claims 1 to 7, characterized in that, The connecting pipe includes a first section and a second section connected to each other. The first section passes through the first box wall along the vertical direction, and the second section is located in the first compartment. The second section is configured to deform to change the position of the end of the second section opposite to the first section.

9. The energy storage device according to claim 8, characterized in that, The second section is configured as a bellows.

10. The energy storage device according to any one of claims 1 to 9, characterized in that, The sealing structure includes a sealing element and a support element. The support element and the sealing element are sleeved around the outer periphery of the connecting pipe. Along the vertical direction, the sealing element is disposed between the support element and the first box wall. The support element cooperates with the first box wall to clamp the sealing element.

11. The energy storage device according to claim 10, characterized in that, The first box wall is provided with a mounting hole, and the energy storage device further includes a connector, which passes through the mounting hole and connects to the support member, so that the support member and the first box wall clamp the sealing member.

12. The energy storage device according to claim 11, characterized in that, The connector includes a connecting part and a fastening part. The connecting part passes through the mounting hole. One end of the connecting part is threadedly connected to the support member, and the other end is engaged with the fastening part. There is a gap between the outer surface of the connecting part and the inner wall surface of the mounting hole, and the fastening part is located on the side of the first box wall away from the support member.

13. The energy storage device according to any one of claims 1 to 12, characterized in that, The enclosure also includes a second compartment, which is located above the first enclosure wall. The thermal management module is housed in the second compartment, and an air outlet is provided on the top wall of the second compartment.

14. An energy storage device, characterized in that, include: Insulation components; The container includes a first compartment, and the first compartment includes a first container wall; Electrical components, at least partially disposed in the first compartment, include a battery device and a control module, the control module being used for electrical control of the battery device; A thermal management module is used to regulate the temperature of the battery device; A connecting pipe connects the battery device and the thermal management module, and the connecting pipe is used to deliver coolant. The first box wall includes a partition wall disposed inside the first box wall to divide the internal space of the first box wall into a first cavity and a second cavity. The heat insulation component is disposed in the first cavity. The connecting pipe passes through the first box wall and is at least partially located in the second cavity. The connecting pipe located in the second cavity is spaced apart from the partition wall.

15. The energy storage device according to claim 14, characterized in that, The first box wall also includes a first wall and a second wall, which are arranged opposite to each other along the thickness direction of the first box wall; One end of the partition wall is connected to the first wall, and the other end is connected to the second wall. The partition wall has a first surface facing the connecting pipe and a second surface facing away from the connecting pipe. The first surface and the second wall form the second cavity, and the second surface, the first wall, and the second wall form the first cavity.

16. The energy storage device according to any one of claims 14 to 15, characterized in that, The first box wall further includes a reinforcing wall, which is disposed in the second cavity and connects to at least two inner wall surfaces of the second cavity.

17. The energy storage device according to claim 16, characterized in that, The number of connecting pipes is two. One of the two connecting pipes is used by the thermal management module to deliver coolant to the battery device, and the other is used by the battery device to deliver coolant to the thermal management module. The two connecting pipes are arranged at intervals, and the reinforcing wall separates the two connecting pipes.

18. The energy storage device according to any one of claims 14 to 17, characterized in that, The connecting pipe includes an adjustment section located in the first compartment and connected to the battery device. The adjustment section is configured to deform to change the position of the end of the connecting pipe away from the thermal management module.

19. The energy storage device according to claim 18, characterized in that, The regulating section is configured as a bellows.

20. The energy storage device according to any one of claims 14 to 19, characterized in that, The first box wall has a first opening, and the first opening communicates with the second cavity; The energy storage device further includes a sealing structure disposed in the second cavity, which is used to seal the gap between the connecting pipe and the first tank wall.

21. The energy storage device according to claim 20, characterized in that, The sealing structure includes a sealing element and a support element. The support element and the sealing element are sleeved around the outer periphery of the connecting pipe. Along the thickness direction of the first box wall, the sealing element is disposed between the support element and the first box wall. The support element cooperates with the first box wall to clamp the sealing element.

22. The energy storage device according to claim 21, characterized in that, The first box wall is provided with a mounting hole, and the energy storage device further includes a connector, which passes through the mounting hole and connects to the support member, so that the support member and the first box wall clamp the sealing member.

23. The energy storage device of claim 22, wherein, The connector includes a connecting part and a fastening part. The connecting part passes through the mounting hole. One end of the connecting part is threadedly connected to the support member, and the other end is engaged with the fastening part. There is a gap between the outer surface of the connecting part and the inner wall surface of the mounting hole, and the fastening part is located on the side of the first box wall away from the support member.

24. An energy storage system characterized by, include: Energy storage converter; The energy storage device as described in any one of claims 1 to 23, wherein the energy storage converter is used to electrically connect the power generation device and the energy storage device.

25. A charging network, characterized in that, include: Charging stations; The energy storage device according to any one of claims 1 to 23, wherein the energy storage device is used to provide electrical energy to the charging pile.

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