Energy storage device, energy storage system and charging network

Abstract

This application discloses an energy storage device, an energy storage system, and a charging network, belonging to the field of battery technology. The energy storage device includes a cabinet, a battery unit, and a thermal management module, with the battery unit housed within the cabinet. The thermal management module manages the temperature of the battery unit and includes a thermal management unit housed within the cabinet. The energy storage device also includes a first limiting member and a second limiting member, both disposed on the inner wall of the cabinet and spaced apart along a first direction perpendicular to the direction of gravity. Along the first direction, the thermal management unit is located between the first and second limiting members. The first and / or second limiting members have guide ramps for guiding the thermal management unit between the first and second limiting members. The energy storage device described above exhibits high assembly efficiency.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to an energy storage device, an energy storage system, and a charging network. Background Technology

[0002] With the rapid development of technology, electricity has become an indispensable energy source in people's production and daily life. To ensure a stable and reliable power supply and guarantee the normal operation of production and daily life, energy storage devices play a crucial role. They can store surplus electricity and release it back into the grid or directly supply power when needed, effectively realizing the recycling of electrical energy. Their applications are wide-ranging, covering industrial power supply, household power supply, emergency power supply, mobile power supply, wind power generation support, solar power generation support, and large-scale energy storage power stations. In the continuous development of energy storage technology, how to improve its assembly efficiency is a technical problem that urgently needs to be solved. Utility Model Content

[0003] In view of the above problems, this application provides an energy storage device, an energy storage system and a charging network, which can improve the assembly efficiency of the energy storage device.

[0004] In a first aspect, this application provides an energy storage device, comprising a cabinet, a battery unit, and a thermal management module, wherein the battery unit is housed within the cabinet. The thermal management module manages the temperature of the battery unit and includes a thermal management unit housed within the cabinet. The energy storage device further includes a first limiting member and a second limiting member, both disposed on the inner wall of the cabinet and spaced apart along a first direction perpendicular to the direction of gravity. Along the first direction, the thermal management unit is located between the first and second limiting members, and the first and / or second limiting members have guide ramps for guiding the thermal management unit between the first and second limiting members.

[0005] In the technical solution of this application embodiment, the first limiting member and / or the second limiting member have guide ramps. When the thermal management unit is assembled in the cabinet, the guide ramps can guide the thermal management unit into a predetermined position between the first and second limiting members. This arrangement allows the thermal management unit to be quickly and conveniently assembled into the cabinet. At the same time, it also enables the thermal management unit to have high positioning accuracy, reduces the risk of difficulty in connecting it with pipelines due to excessive assembly tolerances, and reduces the number of debugging operations during assembly, thereby improving the assembly efficiency and reliability of the energy storage device.

[0006] In one or more embodiments of the first aspect, the cabinet includes an adjacent first wall and a second wall, the first wall being located on one side of the thermal management unit in the second direction, the second wall being located on one side of the thermal management unit in the third direction, the first wall being used to support the thermal management unit, and the first direction, the second direction and the third direction being perpendicular to each other.

[0007] In the above scheme, the second wall can limit the thermal management unit in a third direction, which further improves the assembly efficiency and assembly accuracy of the thermal management unit.

[0008] In one or more embodiments of the first aspect, one of the first limiting member and the second limiting member is disposed on the first wall and the other is disposed on the second wall; or, both the first limiting member and the second limiting member are disposed on the first wall; or, both the first limiting member and the second limiting member are disposed on the second wall.

[0009] In the above scheme, the first and second limiting components are respectively located on different wall sections, significantly reducing the space occupied by each component on its respective wall section. This improves the compactness of the thermal management unit within the energy storage device, leaving more space for other components and thus contributing to an increase in the energy density of the energy storage device. Since both the first and second limiting components are located on one of the first and second walls, only one wall section needs to be positioned and aligned during the assembly process, simplifying the assembly process and reducing assembly difficulty.

[0010] In one or more embodiments of the first aspect, a plurality of first limiting members and a plurality of second limiting members are provided, with the plurality of first limiting members and the plurality of second limiting members corresponding one to one; a portion of the plurality of first limiting members and their corresponding second limiting members are provided on the first wall; another portion of the plurality of first limiting members and their corresponding second limiting members are placed on the second wall.

[0011] In the above scheme, both the first wall and the second wall are provided with a first limiting member and a second limiting member, and there are multiple first limiting members and multiple second limiting members. This arrangement can further improve the positioning accuracy of the thermal management unit.

[0012] In one or more embodiments of the first aspect, the energy storage device further includes a buffer pad disposed between the thermal management unit and the second wall in a third direction.

[0013] In the above scheme, the installation of a buffer pad can reduce the risk of damage to the thermal management unit and the second wall during assembly.

[0014] In one or more embodiments of the first aspect, the energy storage device includes a first fastener, and the thermal management unit is fixed to the first wall by the first fastener.

[0015] In the above scheme, due to the setting of the guide slope, the first fastener can be locked at a predetermined position during the connection process between the thermal management unit and the first wall, which reduces the assembly difficulties and connection failure risk caused by the deviation of the locking position, thereby improving the reliability and structural stability of the thermal management unit.

[0016] In one or more embodiments of the first aspect, the energy storage device includes a second fastener, and the thermal management unit is fixed to the second wall by the second fastener.

[0017] In the above scheme, due to the setting of the guide slope, the second fastener can be locked in the predetermined position during the connection process between the thermal management unit and the second wall, which reduces the assembly difficulties and connection failure risk caused by the deviation of the locking position, thereby improving the reliability and structural stability of the thermal management unit.

[0018] In one or more embodiments of the first aspect, the energy storage device includes a third fastener, the cabinet includes a frame, the thermal management unit is located within the frame, and the thermal management unit is fixed to the frame by the third fastener.

[0019] In the above scheme, due to the setting of the guide slope, the third fastener can be locked at the predetermined position during the connection process between the thermal management unit and the frame, which reduces the assembly difficulties and connection failure risk caused by the deviation of the locking position, thereby improving the reliability and structural stability of the thermal management unit.

[0020] In one or more embodiments of the first aspect, the first limiting member is detachably connected to the inner wall of the cabinet, and the second limiting member is detachably connected to the inner wall of the cabinet.

[0021] In the above solution, since the first and second limiting components are detachably connected inside the Junyu cabinet, the maintenance costs of the first and second limiting components can be reduced.

[0022] In one or more embodiments of the first aspect, the cabinet includes a first compartment and a second compartment arranged along a third direction, with the third direction, the first direction, and the gravity direction being perpendicular to each other; the battery device is housed in the second compartment, and the thermal management module further includes heat exchange pipes and thermal management components, the thermal management unit is housed in the first compartment, the thermal management components are housed in the second compartment, the thermal management components are used to regulate the temperature of the battery cells of the battery device, and the heat exchange pipes connect the thermal management unit and the thermal management components.

[0023] In the above scheme, due to the setting of the guide ramp, the thermal management unit has high positioning accuracy after assembly. It is quicker and more convenient to connect the thermal management unit and thermal management components in the heat exchange pipeline, reducing the number of debugging times during the assembly process and improving the assembly efficiency and reliability of the energy storage device.

[0024] Secondly, this application provides an energy storage system, which includes an energy storage converter and an energy storage device as described in one or more embodiments of the first aspect. The energy storage converter is used to electrically connect the power generation device and the energy storage device.

[0025] In the above scheme, since the energy storage device in one or more embodiments of the first aspect has high assembly efficiency, the energy storage system including the energy storage device in one or more embodiments of the first aspect also has high assembly efficiency.

[0026] Thirdly, this application provides a charging network, which includes charging piles and an energy storage device as described in one or more embodiments of the first aspect, the energy storage device being used to provide electrical energy to the charging piles.

[0027] In the above solution, since the energy storage device in one or more embodiments of the first aspect has high assembly efficiency, the charging network including the energy storage device in one or more embodiments of the first aspect also has high assembly efficiency.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the charging network structure in some embodiments of this application; Figure 2 This is a schematic diagram of the energy storage system in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of the energy storage device in some embodiments of this application; Figure 4 This is a schematic diagram of a portion of the structure of an energy storage device in some embodiments of this application, showing the installation direction of the thermal management unit; Figure 5 This is a schematic diagram of a portion of the structure of an energy storage device in some embodiments of this application; Figure 6 This is a schematic diagram of a partial structure of an energy storage device in some embodiments of this application, showing that a first limiting member is disposed on a first wall and a second limiting member is disposed on a second wall; Figure 7 This is a schematic diagram of a partial structure of an energy storage device in some embodiments of this application, showing that both the first limiting member and the second limiting member are disposed on the first wall; Figure 8 This is a schematic diagram of a partial structure of an energy storage device in some other embodiments of this application; Figure 9 This is a schematic diagram of a partial structure of an energy storage device in some other embodiments of this application; Figure 10 for Figure 9 A magnified view of a section at point A in the middle; Figure 11 This application provides schematic diagrams of a portion of the structure of an energy storage device in some embodiments.

[0030] The reference numerals in the detailed embodiments are as follows: 1000 - Charging network; 2000 - Energy storage system; 3000 - Power generation device; 100 - Battery device; 200 - Energy storage device; 300 - Charging pile; 400 - Energy storage converter; 20 - Cabinet; 21 - First wall; 22 - Second wall; 23 - Frame; 201 - First compartment; 202 - Second compartment; 203 - Third compartment; 30 - Guide slope; 31 - First limiting component; 32 - Second limiting component; 41 - Thermal management unit; 50 - Buffer pad; 61 - First fastener; 62 - Second fastener; 63 - Third fastener; X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0031] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] In this document, the term "embodiment" means that a particular 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 separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0036] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0037] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0038] In some embodiments, the battery device may be a battery pack, which includes a battery housing and one or more individual battery cells housed within the battery housing.

[0039] As an example, a battery cell assembly can be a battery module, which can be housed in a battery housing by fixing the battery module in the battery housing.

[0040] As an example, battery cell assemblies can also be housed in a battery housing by directly fixing multiple battery cells to the battery housing.

[0041] In a typical battery cell structure, a battery cell includes a casing, electrode components, and electrolyte. The casing includes an end cap and a housing; the end cap closes the opening of the housing to define a space for accommodating the electrode components. In some embodiments, the casing can be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc.

[0042] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, 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 devices during peak hours. Wind power generation systems collect wind energy from wind turbines, convert it into electricity, and then store it in energy storage devices. Solar power generation systems can convert solar energy into electricity, store it in energy storage devices, and supply it to users as needed. Mobile power systems can supply power to relevant electrical devices in areas inaccessible by the mains power grid, such as remote mountainous areas and isolated wilderness areas. Temporary power supply systems can provide power to users when there is insufficient power supply. The energy storage devices provided in the embodiments of this application can be used in any power system that requires energy storage.

[0043] Energy storage devices typically consist of a cabinet and a thermal management module. Before the energy storage device is put into use, the thermal management module needs to be assembled into the cabinet. Typically, the thermal management module is assembled by visually positioning it in its designated location within the cabinet. This process may require multiple adjustments, resulting in low assembly efficiency.

[0044] In view of this, this application provides an energy storage device, which includes a cabinet, a battery device, and a thermal management module, with the battery device housed in the cabinet. The thermal management module manages the temperature of the battery device and includes a thermal management unit housed in the cabinet. The energy storage device also includes a first limiting member and a second limiting member, both disposed on the inner wall of the cabinet and spaced apart along a first direction perpendicular to the direction of gravity. Along the first direction, the thermal management unit is located between the first and second limiting members. The first and / or second limiting members have guide ramps for guiding the thermal management unit into the space between the first and second limiting members. When the thermal management unit is assembled in the cabinet, the guide ramps guide the thermal management unit into a predetermined position between the first and second limiting members. This setup allows the thermal management unit to be quickly and easily assembled into the cabinet. At the same time, it also enables the thermal management unit to have high positioning accuracy, reducing the risk of difficulties in connecting it with pipelines due to excessive assembly tolerances. It also reduces the number of debugging operations during the assembly process, thereby improving the assembly efficiency and reliability of the energy storage device.

[0045] Please refer to Figure 1 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a charging network 1000 provided in some embodiments of this application. Figure 3This is a schematic diagram of the structure of an energy storage device 200 provided in some embodiments of this application. Embodiments of this application provide a charging network 1000, which includes a charging pile 300 for charging electrical equipment. The charging network 1000 may also include an energy storage device 200, which is electrically connected to the charging pile 300 and provides power to the charging pile 300.

[0046] It should be noted that the charging pile 300 and the battery cells in the energy storage device 200 are electrically connected via cables, and the battery cells can supply their stored electrical energy to the charging pile 300. The charging pile 300 has a connector that can be connected to electrical equipment, thereby replenishing the equipment's power. The application of the energy storage device 200 in this charging network 1000 can effectively improve the safety of the charging network 1000 and also help to enhance the flexibility of the charging network 1000 during deployment.

[0047] In a charging network 1000, there can be one charging pile 300, and the energy storage device 200 provides power to the one charging pile 300; there can also be multiple charging piles 300, and the energy storage device 200 provides power to multiple charging piles 300.

[0048] As an example, such as Figure 1 As shown, the charging network 1000 includes an energy storage device 200 and two charging piles 300, with the energy storage device 200 providing power to the two charging piles 300.

[0049] The energy storage device 200 may include a battery device 100, which is electrically connected to the charging pile 300 so that the battery device 100 can provide power to the charging pile 300.

[0050] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of an energy storage system 2000 provided in some embodiments of this application. Embodiments of this application provide an energy storage system 2000. The energy storage system 2000 includes an energy storage converter 400, which is electrically connected to a generator 3000 to convert the electrical power provided by the generator 3000. The energy storage system 2000 may also include an energy storage device 200, which is electrically connected to the energy storage converter 400. The energy storage converter 400 converts the electrical energy provided by the generator 3000 and stores it in the energy storage device 200.

[0051] A power conversion device is used to connect the power generation device 3000 and the energy storage device 200. The power generation device 3000 generates electrical energy and stores it in the energy storage device 200 via the power conversion device. The use of the energy storage device 200 in the energy storage system 2000 effectively improves its operational safety. In specific implementations, the power generation equipment can be solar panels, hydroelectric power generation equipment, thermal power generation equipment, etc. This application does not limit the specific type of power generation equipment.

[0052] As an example, such as Figure 2 As shown, the energy storage system 2000 includes an energy storage device 200 and an energy storage converter 400. The two power generation devices 3000 respectively transmit the generated electrical energy to the energy storage converter 400, and the energy storage converter 400 introduces the electrical energy into the energy storage device 200 for storage.

[0053] Please refer to Figure 3 The energy storage device 200 includes a cabinet 20, and a battery device 100 is installed inside the cabinet 20.

[0054] As an example, the energy storage device 200 can be an energy storage container, an energy storage cabinet, etc.

[0055] As an example, energy storage device 200 can be used in energy storage power stations, wind power generation systems, solar power generation systems, 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 device 200. Solar power generation systems can convert solar energy into electrical energy, store it in energy storage device 200, 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 there is insufficient power supply.

[0056] According to some embodiments of this application, please refer to Figures 4-8This application provides an energy storage device 200, which includes a cabinet 20, a battery device 100, and a thermal management module. The battery device 100 is housed within the cabinet 20. The thermal management module manages the temperature of the battery device 100 and includes a thermal management unit 41 housed within the cabinet 20. The energy storage device 200 also includes a first limiting member 31 and a second limiting member 32, both disposed on the inner wall of the cabinet 20 and spaced apart along a first direction X, which is perpendicular to the direction of gravity. Along the first direction X, the thermal management unit 41 is located between the first limiting member 31 and the second limiting member 32. The first limiting member 31 and / or the second limiting member 32 have a guide slope 30 for guiding the thermal management unit 41 between the first limiting member 31 and the second limiting member 32.

[0057] In some embodiments, the container 20 can be a standard shipping container, which can be of standard dimensions for transport, such as 20 feet, 30 feet, 40 feet, or 45 feet, meeting the corresponding standards, with corresponding length, width, and height dimensions. Standard containers can be referenced in GB / T1413-2023 Series 1, Container Classification, Dimensions, and Rated Mass. Of course, the container 20 can also be a non-standard container, meaning that the dimensions of the container 20 in one of the length, width, or height directions (Z) do not match the dimensions of a standard shipping container.

[0058] A 20-foot container can include: a length dimension of 6058mm with a tolerance of 0mm-6mm; a width dimension of 2438mm with a tolerance of 0mm-5mm; and a height dimension (Z) of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm. Note that dimensions smaller than the standard container's height dimension (Z) can be understood as being less than 2896mm.

[0059] A 30-foot container can include: a length dimension of 9125mm with a tolerance of 0mm-10mm; a width dimension of 2438mm with a tolerance of 0mm-5mm; and a gravity dimension of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm. The gravity dimension of a container smaller than that of a standard container can be understood as being less than 2896mm.

[0060] A 40-foot container can include: a length dimension of 12192mm with a tolerance of 0mm-10mm; a width dimension of 2438mm with a tolerance of 0mm-5mm; and a gravity dimension of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm. The gravity dimension of a container smaller than that of a standard container can be understood as being less than 2896mm.

[0061] A 45-foot container can include: a length dimension of 13716 mm with a tolerance of 0 mm to 10 mm; a width dimension of 2438 mm with a tolerance of 0 mm to 5 mm; and a gravity dimension of 2591 mm or 2896 mm with a tolerance of 0 mm to 5 mm. The gravity dimension being smaller than that of a standard container can be understood as being smaller than 2896 mm.

[0062] Alternatively, for containers of various sizes, dimensions within ±5% of their dimensions can be considered as dimensions within the tolerance range.

[0063] The first direction X can be either the length direction of the cabinet 20 or the width direction of the cabinet 20.

[0064] In some embodiments, the thermal management module can manage the temperature of all battery devices 100 within the cabinet 20. The thermal management module may include multiple thermal management units, all housed within the cabinet 20, which collectively manage the temperature of all battery devices 100. In some embodiments, the thermal management module may include a thermal management unit 41, heat exchange piping, and thermal management components. For example, the thermal management unit 41 may be a liquid cooling unit, including a pumping device, heat exchanger, and multiple thermal management units connected by heat exchange piping. The liquid cooling unit delivers heat exchange medium to the thermal management components through the heat exchange piping to manage the temperature of the individual battery cells within the battery devices 100. The thermal management module may also include a fan, allowing heat exchange between the heat exchanger and the external space of the cabinet 20. The thermal management components may be housed within the casing of the battery devices 100. The thermal management components may support the individual battery cells, or they may be stacked together. Alternatively, the thermal management components and the casing of the battery devices 100 may together form a space for housing the individual battery cells. Optionally, the cabinet 20 can be equipped with an air inlet and an air outlet.

[0065] In some embodiments, the cabinet 20 includes a first compartment 201 and a frame 23. The frame 23, the first wall 21, and the second wall 22 together define the first compartment 201. The thermal management unit 41 is located inside the first compartment 201. The frame 23 has openings in the second direction Y and the third direction Z. The thermal management unit 41 can be installed into the first compartment 201 through any of the openings. It should be noted that after the thermal management unit 41 is assembled, the openings can be covered by a cover.

[0066] In some embodiments, the first limiting member 31 and the second limiting member 32 may be wedge blocks.

[0067] The first limiting member 31 and the second limiting member 32 can be formed on the inner wall surface of the cabinet 20. Of course, the first limiting member 31 and the second limiting member 32 can also be detachably connected to the inner wall of the cabinet 20.

[0068] The guide slope 30 can be a straight surface or it can include multiple segments, for example, including at least one arc segment and one straight segment.

[0069] Along the first direction X, the thermal management unit 41 is located between the first limiting member 31 and the second limiting member 32, which means that the first limiting member 31 and the second limiting member 32 together restrict the position of the thermal management unit 41 in the first direction X.

[0070] Please refer to Figure 4 and Figure 5 The guide ramp 30 is used to guide the thermal management unit 41 between the first limiting member 31 and the second limiting member 32. This means that regardless of whether the thermal management unit 41 is installed into the cabinet 20 along direction a or direction b, even if there is a deviation between the initial hoisting position of the thermal management unit 41 and the predetermined position, under the action of the guide ramp 30, the thermal management unit 41 will eventually approach the predetermined position in the first direction X. When it is finally supported by the components inside the cabinet 20, such as by the first wall 21, it is already in the predetermined position.

[0071] In the technical solution of this application embodiment, the first limiting member 31 and / or the second limiting member 32 have a guide slope 30. When the thermal management unit 41 is installed in the cabinet 20, the guide slope 30 can guide the thermal management unit 41 into a predetermined position between the first limiting member 31 and the second limiting member 32. This arrangement allows the thermal management unit 41 to be quickly and conveniently assembled into the cabinet 20. At the same time, it also enables the thermal management unit 41 to have high positioning accuracy, reduces the risk of difficulty in connecting it with pipelines due to excessive assembly tolerance of the thermal management unit 41, reduces the number of debugging times during the assembly process, and thus improves the assembly efficiency and reliability of the energy storage device 200.

[0072] According to some embodiments of this application, please refer to Figures 4-6The cabinet 20 includes an adjacent first wall 21 and a second wall 22. The first wall 21 is located on one side of the thermal management unit 41 in the second direction Y, and the second wall 22 is located on one side of the thermal management unit 41 in the third direction Z. The first wall 21 is used to support the thermal management unit 41. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0073] In some embodiments, the second direction Y is parallel to the direction of gravity.

[0074] In some embodiments, the cabinet 20 includes a first compartment 201 and a second compartment 202 arranged along a third direction Z, with the third direction Z, the first direction X, and the direction of gravity being perpendicular to each other. The battery device 100 is housed in the second compartment 202, and the thermal management unit 41 is housed in the first compartment 201. The cabinet 20 also includes a third compartment 203, which is located on the same side of the second compartment 202 along the third direction Z. The first compartment 201 and the third compartment 203 are arranged along the height direction, with the first compartment 201 located above the third compartment 203. The first wall 21 can be a common wall of the first compartment 201 and the third compartment 203, and the second wall 22 can be a common wall of the first compartment 201 and the second compartment 202. In some embodiments, the third compartment 203 houses a control module for electrically controlling the battery device 100.

[0075] In some embodiments, the energy storage system 2000 includes a battery monitoring circuit for collecting first data from the battery device 100, and a control module for determining the operating status data of the energy storage device 200, which is associated with the first data. The control module can be a module in the energy storage device 200 used to monitor and manage the battery device 100, and can serve as a management unit for the battery device 100 in the energy storage system 2000. The control module can be communicatively connected to the battery monitoring circuit, and can receive and process information from the battery monitoring circuit to determine the operating status data of the energy storage device 200 using the information. The control module can monitor information such as current, voltage, power, state of charge, or temperature of the individual battery cells of the battery device 100 to determine the operating status data of the energy storage device 200. As an example, the control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module. In some embodiments, the Insulation Monitoring Module (IMM), the Main Battery Management Unit (MBMU), the Ethernet ETH, and the Fiber Optic Conversion Module are all control units.

[0076] In some embodiments, the energy storage device 200 further includes a sub-control module and a bus terminal. The multiple battery devices 100 include multiple battery clusters, each battery cluster including multiple battery devices 100 connected in series. The sub-control module includes a first control section and a second control section. The first control section is electrically connected to the bus terminal and the battery clusters. The bus terminal is used for electrical connection with the energy storage converter 400. The second control section is communicatively connected to the control module and the battery monitoring unit of the battery devices 100. In some embodiments, the battery clusters may first be electrically connected to the first control section, and then the energy storage device 200 outputs power through the bus terminal. The first control section is used to form an electrical connection between the battery clusters, the bus terminal, and the energy storage converter 400, so that the power of the battery devices 100 can be output through the bus terminal or input into the battery devices 100. In some embodiments, the second control section is used to exchange data with the control module and receive instructions from the control module, thereby enabling the control module to monitor and control the battery devices 100. In some embodiments, the sub-control module may be referred to as a slave battery management unit.

[0077] In some embodiments, the thermal management module and the control module may be located on opposite sides of all battery devices 100 along the third direction Z.

[0078] The setting of the second wall 22 can restrict the assembly position of the thermal management unit 41 in the third direction Z.

[0079] In the above scheme, the second wall 22 can limit the thermal management unit 41 on the third direction Z, which further improves the assembly efficiency and assembly accuracy of the thermal management unit 41.

[0080] According to some embodiments of this application, please refer to Figures 4-6 - Figure 8 One of the first limiting member 31 and the second limiting member 32 is disposed on the first wall 21, and the other is disposed on the second wall 22. Both the first limiting member 31 and the second limiting member 32 are disposed on the first wall 21; or, both the first limiting member 31 and the second limiting member 32 are disposed on the second wall 22.

[0081] Please refer to Figure 5 Taking the first limiting member 31 being disposed on the second wall 22 and the second limiting member 32 being disposed on the first wall 21 as an example, the space on the left side of the first wall 21 can be used to arrange a bracket for fixing the thermal management unit 41, and can also reserve space for the wiring harness of the thermal management unit 41. That is, the above arrangement can provide more space for other components.

[0082] Please continue to refer to Figure 5It should be noted that one of the first limiting member 31 and the second limiting member 32 is set on the first wall 21 and the other is set on the second wall 22. This means that the height of the first limiting member 31 can be adjusted along the second direction Y and still play a limiting and guiding role. In this way, the space between the first limiting member 31 and the first wall 21 in the second direction Y can be used by other components. In other words, the risk of interference between the first limiting member 31 and other components is reduced.

[0083] Please refer to Figure 7 , Figure 7 The first limiting member 31 and the second limiting member 32 are both disposed on the first wall 21, please refer to Figure 8 , Figure 8 The first limiting member 31 and the second limiting member 32 are both disposed on the second wall 22.

[0084] The above setup means that during the assembly of the first limiting member 31 and the second limiting member 32, only one wall needs to be operated, without the need to position and align on two adjacent walls, making the assembly relatively easy.

[0085] In the above scheme, the first limiting member 31 and the second limiting member 32 are respectively disposed on different wall portions, significantly reducing the space occupied by each of them on their respective wall portions. This improves the assembly compactness of the thermal management unit 41 within the energy storage device 200, leaving more space for other components, thereby contributing to an increase in the energy density of the energy storage device 200. Since both the first limiting member 31 and the second limiting member 32 are disposed on one of the first wall 21 and the second wall 22, only one wall portion needs to be positioned and aligned during the assembly process of the first limiting member 31 and the second limiting member 32, simplifying the assembly process and reducing assembly difficulty.

[0086] According to some embodiments of this application, please refer to Figure 4 and Figure 9 Multiple first limiting members 31 and multiple second limiting members 32 are provided, with each of the multiple first limiting members 31 and multiple second limiting members 32 corresponding to one another; some of the multiple first limiting members 31 and their corresponding second limiting members 32 are provided on the first wall 21; another part of the multiple first limiting members 31 and their corresponding second limiting members 32 are placed on the second wall 22.

[0087] Multiple first limiting members 31 and multiple second limiting members 32 are provided. A portion of the multiple first limiting members 31 and their corresponding second limiting members 32 are disposed on the first wall 21; another portion of the multiple first limiting members 31 and their corresponding second limiting members 32 are disposed on the second wall 22. This means that the thermal management unit 41 can be limited at multiple points in space, thereby... Figure 9For example, the thermal management unit 41 is limited in different areas in the second direction Y, and the positioning accuracy of the thermal management unit 41 is higher.

[0088] In some embodiments, the maximum distance between the first limiting member 31 located on the second wall 22 and the first wall 21 is greater than the maximum distance between the first limiting member 31 located on the first wall 21. Taking the second direction Y as parallel to the direction of gravity as an example, the first limiting member 31 located on the second wall 22 is higher than the first limiting member 31 located on the first wall 21.

[0089] In some embodiments, the maximum distance between the second limiting member 32 located on the second wall 22 and the first wall 21 is greater than the maximum distance between the second limiting member 32 located on the first wall 21 and the first wall 21. Taking the second direction Y as parallel to the direction of gravity as an example, the second limiting member 32 located on the second wall 22 is higher than the second limiting member 32 located on the first wall 21.

[0090] In the above scheme, a first limiting member 31 and a second limiting member 32 are provided on both the first wall 21 and the second wall 22, and multiple first limiting members 31 and second limiting members 32 are provided. This arrangement can further improve the positioning accuracy of the thermal management unit 41.

[0091] According to some embodiments of this application, please refer to Figure 4 and Figure 10 The energy storage device 200 also includes a buffer pad 50, which is disposed between the thermal management unit 41 and the second wall 22 along the third direction Z.

[0092] The material of the cushioning pad 50 may include, but is not limited to, silicone, polystyrene foam, sponge, polyurethane foam, etc.

[0093] Please refer to 4 and Figure 10 When the thermal management unit 41 is installed into the cabinet 20 along direction a, if resistance is encountered during assembly, it means that the thermal management unit 41 is properly assembled along direction Z. This reduces the risk of damage caused by collision between the thermal management unit 41 and the second wall 22, and also reduces the risk of deformation of the second wall 22 due to collision. When the thermal management unit 41 is installed into the cabinet 20 along direction b, the buffer pad 50 reduces the risk of damage to at least one of the two components caused by friction between the thermal management unit 41 and the second wall 22.

[0094] In the above scheme, the setting of the buffer pad 50 can reduce the risk of damage to the thermal management unit 41 and the second wall 22 during the assembly process.

[0095] According to some embodiments of this application, please refer to Figure 4 , Figure 10 and Figure 11The energy storage device 200 includes a first fastener 61, and the thermal management unit 41 is fixed to the first wall 21 by the first fastener 61.

[0096] The first fastener 61 may include a nut and a screw. The nut is disposed on the first wall 21, and the screw engages with the nut to lock the thermal management unit 41 to the first wall 21. For example, the nut may be embedded in the first wall 21, such as by welding or riveting, with a portion of the nut located inside the first wall 21.

[0097] The thermal management unit 41 can be fixed to the first wall 21 by a bracket and a first fastener 61. For example, the first fastener 61 may include a first sub-fastener and a second sub-fastener. The first sub-fastener fixes the bracket and the thermal management unit 41, and the second sub-fastener fixes the bracket and the first wall 21.

[0098] In the above scheme, due to the setting of the guide slope 30, the first fastener 61 can be locked at a predetermined position during the connection process between the thermal management unit 41 and the first wall 21, which reduces the assembly difficulties and connection failure risk caused by the deviation of the locking position, thereby improving the reliability and structural stability of the thermal management unit 41.

[0099] According to some embodiments of this application, please refer to Figure 4 , Figure 10 and Figure 11 The energy storage device 200 includes a second fastener 62, and the thermal management unit 41 is fixed to the second wall 22 by the second fastener 62.

[0100] The second fastener 62 may include a nut and a screw. The nut is disposed on the second wall 22, and the screw engages with the nut to lock the thermal management unit 41 to the second wall 22. For example, the nut may be embedded in the second wall 22, such as by welding or riveting, with a portion of the nut located inside the second wall 22.

[0101] The thermal management unit 41 can be fixed to the second wall 22 by a bracket and a second fastener 62. For example, the second fastener 62 may include a second sub-fastener and a second sub-fastener, the second sub-fastener fixing the bracket and the thermal management unit 41, and the second sub-fastener fixing the bracket and the second wall 22.

[0102] In the above scheme, due to the setting of the guide slope 30, the second fastener 62 can be locked at the predetermined position during the connection process between the thermal management unit 41 and the second wall 22, which reduces the assembly difficulties and connection failure risk caused by the deviation of the locking position, thereby improving the reliability and structural stability of the thermal management unit 41.

[0103] According to some embodiments of this application, please refer to Figure 4 , Figure 10 and Figure 11 The energy storage device 200 includes a third fastener 63, the cabinet 20 includes a frame 23, the thermal management unit 41 is located inside the frame 23, and the thermal management unit 41 is fixed to the frame 23 by the third fastener 63.

[0104] In some embodiments, the cabinet 20 includes a plurality of uprights extending along the height direction, a plurality of longitudinal beams extending along a first direction X, and a plurality of transverse beams extending along a third direction Z. The uprights, transverse beams, and longitudinal beams together form a cuboid frame 23, which defines the outer envelope contour of the cabinet 20.

[0105] Please refer to Figure 11 , Figure 11 A schematic diagram is shown of the thermal management unit 41 being fixed to the longitudinal beam by a third fastener 63.

[0106] The third fastener 63 may include a nut and a screw, with the nut disposed on the frame 23 and the screw threadedly engaging with the nut to lock the thermal management unit 41 to the frame 23. Exemplarily, the nut may be embedded in the frame 23, for example, by welding or riveting, with a portion of the nut located inside the frame 23.

[0107] The thermal management unit 41 can be fixed to the frame 23 by a bracket and a third fastener 63. For example, the third fastener 63 may include a third sub-fastener and a third sub-fastener, the third sub-fastener fixing the bracket and the thermal management unit 41, and the third sub-fastener fixing the bracket and the frame 23.

[0108] In the above scheme, due to the setting of the guide slope 30, the third fastener 63 can be locked at the predetermined position during the connection process between the thermal management unit 41 and the frame 23, which reduces the assembly difficulties and connection failure risk caused by the deviation of the locking position, thereby improving the reliability and structural stability of the thermal management unit 41.

[0109] According to some embodiments of this application, please refer to Figure 4 , Figure 10 and Figure 11 The first limiting member 31 is detachably connected to the inner wall of the cabinet 20, and the second limiting member 32 is detachably connected to the inner wall of the cabinet 20.

[0110] In some embodiments, the first limiting member 31 can be connected to the inner wall of the cabinet 20 by fasteners. For example, a countersunk hole can be provided on the guide ramp 30, and a countersunk screw can be used to connect the first limiting member 31 to the inner wall of the cabinet 20. In some embodiments, the first limiting member 31 can be engaged with the inner wall of the cabinet 20.

[0111] In some embodiments, the second limiting member 32 can be connected to the inner wall of the cabinet 20 by fasteners. For example, a countersunk hole can be provided on the guide ramp 30, and a countersunk screw can be used to connect the second limiting member 32 to the inner wall of the cabinet 20. In some embodiments, the second limiting member 32 can be engaged with the inner wall of the cabinet 20.

[0112] In the above solution, since the first limiting member 31 and the second limiting member 32 are detachably connected inside the Junyu cabinet 20, the maintenance cost of the first limiting member 31 and the second limiting member 32 can be reduced.

[0113] According to some embodiments of this application, please refer to Figures 4-11 The cabinet 20 includes a first compartment 201 and a second compartment 202 arranged along the third direction Z, with the third direction Z, the first direction X, and the direction of gravity being perpendicular to each other; the battery device 100 is housed in the second compartment 202, and the thermal management module also includes heat exchange pipes and thermal management components. The thermal management unit 41 is housed in the first compartment 201, and the thermal management components are housed in the second compartment 202. The thermal management components are used to regulate the temperature of the individual battery cells of the battery device 100, and the heat exchange pipes connect the thermal management unit 41 and the thermal management components.

[0114] In some embodiments, the thermal management component may be a liquid cooling plate.

[0115] It should be noted that, Figure 4 The dashed lines in the diagram are only used to show the positional relationship between the second compartment 202 and the third compartment 203, and do not limit their dimensions.

[0116] In some embodiments, the cabinet 20 includes a first compartment 201 and a second compartment 202 arranged along a third direction Z, with the third direction Z, the first direction X, and the direction of gravity perpendicular to each other. A battery device 100 is housed in the second compartment 202, and a thermal management unit 41 is housed in the first compartment 201. The cabinet 20 also includes a third compartment 203, which is located on the same side of the second compartment 202 along the third direction Z. The first compartment 201 and the third compartment 203 are arranged along the height direction, with the first compartment 201 located above the third compartment 203. The first wall 21 can be a common wall of the first compartment 201 and the third compartment 203, and the second wall 22 can be a common wall of the first compartment 201 and the second compartment 202. In some embodiments, the third compartment 203 houses electrical components such as a control module, a bus terminal, a fire control module, and a power distribution module. In the above scheme, due to the setting of the guide slope 30, the thermal management unit 41 has high positioning accuracy after assembly. When connecting the thermal management unit 41 and the thermal management components in the heat exchange pipeline, it can be faster and more convenient, reducing the number of debugging times in the assembly process and improving the assembly efficiency and reliability of the energy storage device 200.

[0117] According to some embodiments of this application, please refer to Figure 2 This application provides an energy storage system 2000, which includes an energy storage converter 400 and an energy storage device 200 in one or more embodiments of the first aspect. The energy storage converter 400 is used to electrically connect the power generation device 3000 and the energy storage device 200.

[0118] In the above solution, since the energy storage device 200 in one or more embodiments of the first aspect has high assembly efficiency, the energy storage system 2000 including the energy storage device 200 in one or more embodiments of the first aspect also has high assembly efficiency.

[0119] According to some embodiments of this application, please refer to Figure 1 This application provides a charging network 1000, which includes a charging pile 300 and an energy storage device 200 as described in one or more embodiments of the first aspect. The energy storage device 200 is used to provide electrical energy to the charging pile 300.

[0120] In the above solution, since the energy storage device 200 in one or more embodiments of the first aspect has high assembly efficiency, the charging network 1000 including the energy storage device 200 in one or more embodiments of the first aspect also has high assembly efficiency.

[0121] According to some embodiments of this application, please refer to Figures 3-10This application provides an energy storage device 200, which includes a cabinet 20, a battery device 100, and a thermal management module. The thermal management module manages the temperature of the battery device 100. The cabinet 20 includes a first compartment 201 and a second compartment 202 arranged along a third direction Z, with the third direction Z, the first direction X, and the direction of gravity perpendicular to each other. The battery device 100 is housed in the second compartment 202, and the thermal management unit 41 is housed in the first compartment 201. The cabinet 20 also includes a third compartment 203, which is located on the same side of the second compartment 202 along the third direction Z. The first compartment 201 and the third compartment 203 are arranged along the height direction, with the first compartment 201 located above the third compartment 203. The third compartment 203 houses a control module. The energy storage device 200 also includes a first limiting member 31 and a second limiting member 32. Both the first limiting member 31 and the second limiting member 32 are disposed on the inner wall of the cabinet 20, and are spaced apart along a first direction X, which is perpendicular to the direction of gravity. Along the first direction X, the thermal management unit 41 is located between the first limiting member 31 and the second limiting member 32. Both the first limiting member 31 and the second limiting member 32 have guide slopes 30, which guide the thermal management unit 41 into the space between the first limiting member 31 and the second limiting member 32. The cabinet 20 includes an adjacent first wall 21 and a second wall 22. The first wall 21 is located on one side of the thermal management unit 41 in the second direction Y, and the second wall 22 is located on the other side of the thermal management unit 41 in the third direction Z. The first wall 21 is used to support the thermal management unit 41 and is a common wall of the first compartment 201 and the third compartment 203. The second wall 22 is a common wall of the first compartment 201 and the second compartment 202. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. One of the first limiting member 31 and the second limiting member 32 is disposed on the first wall 21, and the other is disposed on the second wall 22.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. 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: Cabinet; The battery assembly is housed within the cabinet. A thermal management module is used to manage the temperature of the battery device. The thermal management module includes a thermal management unit, which is housed within the cabinet. The energy storage device further includes a first limiting member and a second limiting member, both of which are disposed on the inner wall of the cabinet and are spaced apart along a first direction, which is perpendicular to the direction of gravity. Along the first direction, the thermal management unit is located between the first limiting member and the second limiting member. The first limiting member and / or the second limiting member has a guide slope, which is used to guide the thermal management unit into the space between the first limiting member and the second limiting member.

2. The energy storage device according to claim 1, characterized in that, The cabinet includes an adjacent first wall and a second wall. The first wall is located on one side of the thermal management unit in a second direction, and the second wall is located on one side of the thermal management unit in a third direction. The first wall is used to support the thermal management unit. The first direction, the second direction, and the third direction are perpendicular to each other.

3. The energy storage device according to claim 2, characterized in that, One of the first limiting member and the second limiting member is disposed on the first wall, and the other is disposed on the second wall; Alternatively, both the first limiting member and the second limiting member are disposed on the first wall; Alternatively, both the first limiting member and the second limiting member may be disposed on the second wall.

4. The energy storage device according to claim 2, characterized in that, Multiple first limiting members and multiple second limiting members are provided, with each of the multiple first limiting members and multiple second limiting members corresponding one-to-one; A portion of the first limiting members and their corresponding second limiting members are disposed on the first wall; Another portion of the first limiting members and their corresponding second limiting members are placed on the second wall.

5. The energy storage device according to claim 2, characterized in that, The energy storage device also includes a buffer pad, which is disposed between the thermal management unit and the second wall along the third direction.

6. The energy storage device according to claim 2, characterized in that, The energy storage device includes a first fastener, and the thermal management unit is fixed to the first wall by the first fastener.

7. The energy storage device according to claim 2, characterized in that, The energy storage device includes a second fastener, and the thermal management unit is fixed to the second wall by the second fastener.

8. The energy storage device according to any one of claims 1-7, characterized in that, The energy storage device includes a third fastener, the cabinet includes a frame, the thermal management unit is located within the frame, and the thermal management unit is fixed to the frame by the third fastener.

9. The energy storage device according to any one of claims 1-7, characterized in that, The first limiting member is detachably connected to the inner wall of the cabinet, and the second limiting member is detachably connected to the inner wall of the cabinet.

10. The energy storage device according to any one of claims 1-7, characterized in that, The cabinet includes a first compartment and a second compartment arranged along a third direction, wherein the third direction, the first direction, and the gravity direction are perpendicular to each other; The battery device is housed in the second compartment. The thermal management module further includes heat exchange pipelines and thermal management components. The thermal management unit is housed in the first compartment. The thermal management components are housed in the second compartment. The thermal management components are used to regulate the temperature of the individual battery cells of the battery device. The heat exchange pipelines connect the thermal management unit and the thermal management components.

11. An energy storage system, characterized in that, include: Energy storage converter; The energy storage device as described in any one of claims 1-10, wherein the energy storage converter is used to electrically connect the power generation device and the energy storage device.

12. A charging network, characterized in that, include: Charging stations; The energy storage device according to any one of claims 1-10, wherein the energy storage device is used to provide electrical energy to the charging pile.

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