Battery device, energy storage device, energy storage system, and charging network

Abstract

The application relates to the technical field of batteries, and provides a battery device, an energy storage device, an energy storage system and a charging network. The battery device comprises a battery box body and a battery module. The battery box body comprises a first box body, a second box body and a bearing frame, the first box body and the second box body are enclosed to form a containing cavity; the bearing frame comprises side supports and support beams, the two side supports are arranged at intervals in the second box body, and the first box body covers the bearing frame; a plurality of support beams are arranged at intervals in the height direction between the two side supports to form a plurality of layers of support spaces; the battery module comprises a plurality of battery monomers and a plurality of carriers, each layer of carrier comprises a bottom frame and a side frame, the plurality of battery monomers are arranged in a single layer on the bottom frame, and the side frame is arranged on the bottom frame; at least two layers of battery modules constitute a battery monomer assembly, and each layer of support space can be provided with one battery monomer assembly; in the two adjacent layers of battery modules of the battery monomer assembly, the side frame of the lower layer of battery modules is connected to the side frame or the bottom frame of the upper layer of battery modules.

Description

Technical Field

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

[0002] In related technologies, energy storage boxes and containers have limited load-bearing capacity for individual battery cells, which restricts the improvement of the integration of energy storage systems. Utility Model Content

[0003] In view of this, embodiments of this application provide a battery device, an energy storage device, an energy storage system, and a charging network, which can improve the load-bearing capacity of individual battery cells and increase the integration of the battery device.

[0004] The technical solution of this application embodiment is implemented as follows: This application provides a battery device, including: The battery housing includes a first housing, a second housing, and a support frame, wherein the first housing and the second housing enclose a receiving cavity; the support frame includes side supports and support beams, two side supports are spaced apart from the second housing, and the first housing covers the support frame; a plurality of support beams are spaced apart along the height direction between the two side supports to form a multi-layer support space arranged along the height direction; A battery module includes a bracket and multiple battery cells, wherein the multiple battery cells are arranged in a single layer on the bracket; each layer of the bracket includes a base frame and a side frame, wherein the multiple battery cells are arranged in a single layer on the base frame, and the side frame is disposed on the base frame; Wherein, at least two layers of battery modules constitute a battery cell assembly, and at least one battery cell assembly is disposed in the receiving cavity; each layer of the support space can be provided with one battery cell assembly; in the two adjacent layers of battery modules of the battery cell assembly, the side frame of the lower layer of battery module is connected to the side frame or the base frame of the upper layer of battery module.

[0005] The battery device provided in this application embodiment comprises a battery module formed by a bracket and battery cells as a whole, with at least one layer of battery modules forming a battery cell assembly, and at least one battery cell assembly located in a receiving cavity. The bracket supports the single layer of battery cells and has a strong load-bearing capacity. Thus, a single battery module can accommodate more battery cells, significantly improving the integration and energy density of the battery device. Furthermore, by using a bracket to support the single layer of battery cells, assembly efficiency and production efficiency can be improved. In this way, the battery device can meet the high integration requirements of energy storage systems, with high overall structural strength, low cost, simple manufacturing process, and convenient maintenance. A support space is formed by side brackets and support beams, which accommodate the battery cell assembly. The support beams support the corresponding battery cell assembly within the support space. Thus, the lower layer of battery cell assembly does not need to bear the weight of the upper layer, allowing for more layers of battery cell assembly to be arranged in the battery housing. No additional support structure is needed inside the battery module, allowing for a larger number of battery cells, further improving the system integration and energy density of the battery device, and reducing the difficulty of installation and maintenance. The side frame of the lower battery module of the same battery cell assembly can support the upper battery module. The battery cells in each layer of the bracket do not need to bear the weight of the battery cells in the upper layer of the bracket. This can reduce the design requirements for the load-bearing capacity of the battery cells, reduce production costs, and extend service life.

[0006] In some embodiments, the number of layers in the support space is 1 to 12.

[0007] The number of support spaces should be limited within this range to avoid excessive layers, which would lead to excessive weight bearing by the side supports and affect their service life.

[0008] In some embodiments, the number of battery modules in each layer of the support space may be the same or different.

[0009] The number of battery modules in each support space is unlimited. They can all be the same, or they can all be different. Alternatively, some support spaces can have the same number of battery modules, while others can have different numbers of battery modules, and so on.

[0010] In some embodiments, the support frame further includes: A slide rail is provided on the support beam or the second housing, and the bracket is provided on the slide rail.

[0011] Setting up slide rails can improve the smoothness of battery cell movement, reduce friction, thereby reducing wear on the brackets that cooperate with the slide rails, extending their service life, and improving assembly efficiency.

[0012] In some embodiments, the support frame further includes: A limiting baffle is provided at the end of the slide rail.

[0013] Setting limit baffles can reduce assembly difficulty, improve convenience, and thus increase production efficiency.

[0014] In some embodiments, the beginning of the slide rail has a guide portion.

[0015] The slide rail entrance is designed with guides to facilitate the entry of individual battery cells into the slide rail and their movement along it.

[0016] In some embodiments, the support frame further includes: The reinforcing members are connected to the second housing and the side bracket, respectively.

[0017] The addition of reinforcing components can improve the connection stability between the second housing and the side support.

[0018] In some embodiments, the bracket is locked to the second housing, or the bracket is locked to the support beam.

[0019] This reduces the likelihood of the battery module moving relative to the battery housing.

[0020] In some embodiments, the side support includes: Vertical frames, with multiple vertical frames spaced apart in the second housing; A plurality of the horizontal frames are connected at intervals between the vertical frames along the height direction; The reinforcing frame, wherein multiple reinforcing frames are respectively connected to the corresponding vertical frame and / or the horizontal frame.

[0021] The vertical and horizontal frames can form a hollow frame, which helps reduce material consumption and weight. As an example, multiple vertical frames are spaced apart along a first direction. Reinforcing frames are used to improve the structural strength and load-bearing capacity of the side supports.

[0022] In some embodiments, the support beam, the vertical frame, the horizontal frame, and the reinforcing frame are all profile structures.

[0023] The production process of profile structures is relatively simple, which helps to shorten the development cycle and production time, and reduce production costs.

[0024] In some embodiments, the number of battery modules in each battery cell assembly is 2 to 12.

[0025] The number of layers is limited to 12 or less to prevent the battery modules from stacking too many layers and the load on the support frame from being too large.

[0026] In some embodiments, the battery cell assembly includes one layer of the battery module, and the bracket includes: The base frame, in which multiple battery cells are arranged in a single layer, is mounted.

[0027] The base frame can support the battery cells in its corresponding layer.

[0028] In some embodiments, both the base frame and the side frame are profile structures.

[0029] The production process of profile structures is relatively simple, which helps to shorten the development cycle and production time, and reduce production costs.

[0030] In some embodiments, the individual battery cells in the multilayer battery module are electrically connected to form a battery cluster.

[0031] This simplifies the structure and maximizes space utilization.

[0032] In some embodiments, the individual battery cells in the single-layer battery module are electrically connected to form a battery cluster.

[0033] In this way, each layer can be independently controlled and its operation and maintenance can be flexible.

[0034] In some embodiments, the individual battery cells in the single-layer battery module are electrically connected to multiple battery clusters.

[0035] This reduces the likelihood of downtime due to malfunctions.

[0036] In some embodiments, the first housing opens downwards along the direction of gravity, the second housing closes the opening, and the first housing is locked to the second housing.

[0037] The second enclosure is located below the first enclosure, and the second enclosure serves to support the first enclosure and the battery module.

[0038] This application also provides an energy storage device, including: The battery device described in any one of the embodiments of this application.

[0039] In some embodiments, the energy storage device further includes: A control device connected to the battery device for thermal and / or electrical management of the battery device.

[0040] In some embodiments, the second housing is a tray, and the control device is disposed on the tray.

[0041] The pallet has good load-bearing capacity and impact resistance, and is easy to maintain, repair, and replace. The control device is located on one side of the first housing, which facilitates the management of the battery modules and improves the rationality of the space layout.

[0042] This application also provides an energy storage system, including: Energy storage converter; The energy storage device described in any one of the embodiments of this application is provided, wherein the energy storage converter is used to electrically connect the power generation device and the energy storage device.

[0043] This application also provides a charging network, including: Charging stations; The energy storage device or the energy storage system described in any one of the embodiments of this application is used to provide electrical energy to the charging pile.

[0044] The energy storage device, energy storage system, and charging network provided in this application embodiment have the same technical effects as the aforementioned battery device because they include the battery device described above. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the charging network structure in one embodiment of this application; Figure 2 This is a schematic diagram of the energy storage system and power generation device in one embodiment of this application; Figure 3 This is a schematic diagram of the energy storage device in one embodiment of this application; Figure 4 for Figure 3 The diagram shows a partial structural schematic of the energy storage device, in which the control device is hidden. Figure 5 for Figure 3 The diagram shows a partial structural schematic of the battery device, in which the first housing is hidden. Figure 6 for Figure 4 Another perspective of the partial structural diagram, in which the first box is hidden; Figure 7 for Figure 6 A schematic diagram of another state of the structure, in which the battery cell assembly has not yet been assembled; Figure 8 This is an exploded view of a battery cell assembly according to an embodiment of this application, wherein the bracket includes a base frame and a side frame; Figure 9 This is a schematic diagram of the structure of a battery module in one embodiment of this application, wherein the bracket includes a base frame; Figure 10 for Figure 6 Another perspective of the partial structural diagram, in which three battery cell components are hidden; Figure 11 for Figure 10 A partial structural diagram from another perspective; Figure 12 for Figure 10 A partial structural diagram from another perspective; Figure 13 for Figure 12 A magnified structural diagram at point A.

[0046] Explanation of reference numerals in the attached figures: 100. Battery assembly; 10. Battery housing; 10a. Supporting space; 11. First housing; 11a. Opening; 12. Second housing; 13. Support frame; 131. Side bracket; 132. Support beam; 133. Slide rail; 134. Limiting baffle; 1331. Guide part; 135. Reinforcing member; 1311. Vertical frame; 1312. Horizontal frame; 1313. Reinforcing frame; 20. Battery module; 21. Bracket; 211. Base frame; 212. Side frame; 22. Battery cell; 200. Energy storage device; 210. Control device; 2101. Water-cooled unit; 2102. Electrical box; 2103. Energy storage converter; 201. Battery cell assembly; 2000. Energy storage system; 300. Charging pile; 400. Energy storage converter; 3000. Power generation device; 1000. Charging network; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0049] It should be noted that in the embodiments of this application, the orientations or positional relationships such as "first direction," "second direction," "third direction," and "altitude direction" are based on the orientations or positional relationships shown in the accompanying drawings. It should be understood that these orientational terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0051] In the description of this specification, references to terms such as "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of those different embodiments or examples.

[0052] In this article, 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, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0053] The following is a detailed description of this application.

[0054] In related technologies, energy storage boxes and containers have limited load-bearing capacity for individual battery cells, which restricts the improvement of the integration of energy storage systems.

[0055] In view of this, embodiments of this application provide a battery device that can improve the load-bearing capacity of individual battery cells and increase the integration of the battery device. The battery device can be applied to energy storage devices or to electrical equipment, such as vehicles.

[0056] Please see Figures 1 to 3 This application also provides an energy storage device 200, which includes the battery device 100 of any embodiment of this application.

[0057] In some embodiments, please refer to Figure 3 The energy storage device 200 also includes a control device 210, which is connected to the battery device 100 to manage the battery device 100, such as thermal management, electrical management or energy conversion control.

[0058] As an example, control device 210 includes a water-cooled unit 2101, which is connected to battery device 100 for thermal management of battery device 100.

[0059] As an example, the control device 210 includes an electrical box 2102, which is connected to the battery device 100 for electrical management of the battery device 100.

[0060] As an example, the control device 210 includes an energy storage converter 2103, which is connected to the battery device 100 to control the energy conversion of the battery device 100 and to control the charging and discharging of the battery device 100.

[0061] Please refer to Figure 1 and Figure 2 This application embodiment also provides a charging network 1000, which includes a charging pile 300 for charging electrical equipment.

[0062] The charging network 1000 may also include an energy storage device 200 according to any embodiment of the present application. The energy storage device 200 is electrically connected to the charging pile 300 and is used to provide power to the charging pile 300.

[0063] The charging pile 300 is electrically connected to the battery cells in the energy storage device 200 via cables. The battery cells can supply their stored electrical energy to the charging pile 300. The charging pile 300 has a connector that can connect 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 reliability of the charging network 1000 and also help to enhance the flexibility of its deployment.

[0064] 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.

[0065] 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.

[0066] As an example, the energy storage device 200 includes 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.

[0067] In some embodiments, the charging network 1000 includes a charging pile 300 and an energy storage system 2000 according to embodiments of this application, wherein the energy storage system 2000 is used to provide power to the charging pile 300.

[0068] In some embodiments, combined with Figure 4 and Figure 5 The battery device 100 includes multiple battery cells 22. Each battery cell 22 can be a rechargeable battery, meaning it can be recharged after discharge to activate its active materials and continue to be used. The battery cells 22 can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc., but this application embodiment is not limited to these types.

[0069] Please see Figure 2 This application also provides an energy storage system 2000, which includes an energy storage converter 400 electrically connected to a generator 3000 to convert the electrical power provided by the generator 3000. The energy storage system 2000 may further include an energy storage device 200 according to any embodiment of this application. The energy storage device 200 is electrically connected to the energy storage converter 400, which in turn connects the generator 3000 and the energy storage device 200, converting the electrical energy provided by the generator 3000 and storing it in the energy storage device 200.

[0070] The power generation device 3000 generates electrical energy and stores it in the energy storage device 200 via a power conversion device. The power conversion device is connected between the power generation device 3000 and the energy storage device 200. The application of the energy storage device 200 in the energy storage system 2000 effectively improves its operational reliability. 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.

[0071] 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.

[0072] As an example, the energy storage device 200 can be an energy storage container, an energy storage cabinet, etc.

[0073] 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.

[0074] Please see Figures 3 to 5 The battery device 100 includes a battery housing 10 and a battery module 20. The battery housing 10 includes a first housing 11 and a second housing 12, which together form a receiving cavity. The battery module 20 includes a bracket 21 and a plurality of battery cells 22, which are arranged in a single layer on the bracket 21. Exemplarily, at least two battery modules 20 are disposed within the receiving cavity. Exemplarily, the battery cells 22 are exposed within the receiving cavity.

[0075] In some embodiments, the battery device 100 is configured to be used in the external environment without needing to be placed in a battery compartment or installed in an electrical device, thereby reducing the transportation and assembly costs of the energy storage device 200 and increasing the energy density, while also offering greater flexibility in size design.

[0076] Furthermore, the first housing 11 is configured to be exposed to the external environment. By exposing the first housing 11 to the external environment, the battery device 100 is configured to be usable in the external environment. This achieves the following effects in certain usage scenarios: Firstly, it can be transported as a battery device 100 during actual manufacturing, thereby reducing transportation costs. Secondly, during actual installation and use, the installation steps can be optimized, reducing installation labor costs. Thirdly, it simplifies the structure, thereby improving space utilization and ultimately increasing energy density. This application does not limit the single-layer battery module 20 to a single battery cluster; it can be configured as a single battery cluster located on the same layer of bracket 21, or as a single battery cluster placed separately on multiple layers of bracket 21, or as multiple battery clusters placed on a single layer of bracket 21. For example, in some embodiments, the battery cells 22 in the multi-layer battery module 20 are electrically connected as a battery cluster, which simplifies the structure and increases space utilization. In other embodiments, the individual battery cells 22 in the single-layer battery module 20 are electrically connected to form a cluster of batteries, each layer being independently controllable and flexible in operation and maintenance. Alternatively, in other embodiments, the individual battery cells 22 in the single-layer battery module 20 are electrically connected to multiple clusters of batteries, which can reduce the possibility of downtime after a failure.

[0077] The battery housing 10 is used to carry the battery module 20 and protect it. The specific forms of the first housing 11 and the second housing 12 are not limited and can be configured in various ways according to requirements. For example, the first housing 11 forms the main part of the receiving cavity, and the second housing 12 is plate-shaped, covering the first housing 11. The second housing 12 can be, for example, a tray, which has good load-bearing capacity and impact resistance, and facilitates later maintenance such as inspection and replacement. Alternatively, both the first housing 11 and the second housing 12 can be semi-box-shaped, each forming a portion of the receiving cavity.

[0078] In some embodiments, please refer to Figure 3 The second housing 12 is a tray, and the control device 210 is mounted on the tray. The control device 210 is located on one side of the first housing 11, which facilitates the management of the battery module 20 and improves the rationality of the space layout. Furthermore, the control device 210 can be independently assembled and disassembled from the first housing 11, which simplifies the structure and facilitates later maintenance.

[0079] For example, please refer to Figure 3 The first box 11 has an opening 11a facing downwards along the direction of gravity, and the second box 12 closes the opening 11a.

[0080] The second housing 12 is located below the first housing 11, and the second housing 12 serves to support the first housing 11 and the battery module 20.

[0081] Furthermore, the first housing 11 is locked to the second housing 12, thereby securing the first housing 11 and the second housing 12 together. For example, the first housing 11 is locked to the second housing 12 by fasteners, such as bolts. As an example, the first housing 11 extends horizontally from the opening 11a to form a connecting portion, and fasteners lock the connecting portion to the second housing 12.

[0082] In the embodiments of this application, "locking" refers to a fixed connection. For example, the first housing 11 is locked to the second housing 12, which means that the first housing 11 and the second housing 12 are fixedly connected. This will not be described again later.

[0083] As an example, the battery cell 22 includes a housing and an electrode assembly. The housing has multiple housing walls that enclose a receiving space within the housing, and the electrode assembly is disposed within the receiving space. End faces are formed in the multiple housing walls, which are the surfaces of the housing walls where electrode terminals or pressure relief valves are disposed. For example, two housing walls may be arranged opposite each other to form two end faces.

[0084] For example, please refer to Figure 5 The battery cell 22 is a prismatic battery cell, with a shape approximately similar to a cuboid. In some embodiments not shown, the battery cell 22 is a cylindrical battery cell, with a shape approximately similar to a cylinder.

[0085] For example, please refer to Figure 5 The battery cell 22 has six shell walls. Two of the shell walls are arranged opposite each other along a first direction X to form two large surfaces; another two shell walls are arranged opposite each other along a second direction Y to form two side surfaces; and another two shell walls are arranged opposite each other along a third direction Z to form two end faces of the battery cell 22. The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other, and the third direction Z is the same as the height direction of the battery cell 22.

[0086] As an example, the battery cell 22 includes two electrode terminals, which are disposed on the same end face of the battery cell 22. Further, as... Figure 5 As shown, the end face with the electrode terminals faces upward.

[0087] In some embodiments not shown, the two electrode terminals are respectively disposed on the end faces of different sides of the battery cell 22.

[0088] As an example, at least two battery cells 22 are arranged along a first direction X to form a battery row, and at least two battery rows are arranged along a second direction Y to form a battery pack. The battery pack consists of all the battery cells 22 in the battery module.

[0089] In some embodiments, at least two layers of battery modules 20 constitute a battery cell assembly 201, and at least one battery cell assembly 201 is disposed in the receiving cavity. After the battery modules 20 in the same battery cell assembly 201 are assembled as a whole, they are installed together into the battery housing 10. The battery modules 20 in the battery cell assembly 201 can be fixedly connected as a whole, or they can be stacked as a whole along the height direction without any fixed connection measures.

[0090] At least two layers of battery modules 20 constitute a single battery cell assembly 201. That is, the number of battery modules 20 in a single battery cell assembly 201 is unlimited; each battery cell assembly 201 can have two, three, or more layers of battery modules 20. The number of layers of battery modules 20 in a single battery cell assembly 201 can be set according to actual needs. For example... Figure 6 and Figure 7 In the middle, two layers of battery modules 20 constitute a battery cell assembly 201.

[0091] Understandably, the battery modules 20 in each individual battery cell assembly 201 can be the same or different. For example... Figure 7 In each battery cell assembly 201, the number of battery modules 20 is the same, which is two.

[0092] At least one battery cell assembly 201 is disposed in the receiving cavity; that is, the number of battery cell assemblies 201 in the battery housing 10 is not limited, and one, two, or more battery cell assemblies 201 can be provided. Figure 6 and Figure 7 In the battery housing 10, four battery cell assemblies 201 are provided.

[0093] The bracket 21 and the single-layer battery cell 22 together form a battery module 20. The specific form of the bracket 21 can be configured in various ways according to requirements. For example, please refer to [reference needed]. Figure 8 and Figure 9 The bracket 21 includes a base frame 211, on which multiple battery cells 22 are arranged in a single layer. The base frame 211 can support the battery cells 22 in its corresponding layer.

[0094] As an example, the base frame 211 is a profile structure. The manufacturing process of profile structures is relatively simple, which helps to shorten the development cycle and production time, and reduce production costs.

[0095] As an example, the individual battery cells 22 in each battery module 20 are connected as a whole, for example by adhesive bonding or by binding with straps.

[0096] As an example, the bracket 21 includes a side frame 212, which is disposed on the base frame 211 and is capable of supporting the weight of the upper battery module 20. In this way, the battery cells 22 in each layer of the bracket 21 do not need to bear the weight of the battery cells 22 in the upper layer of the bracket 21, which can reduce the design requirements for the load-bearing capacity of the battery cells 22, reduce production costs, and extend service life.

[0097] As an example, side frame 212 is a profile structure. The manufacturing process of profile structures is relatively simple, which helps to shorten the development cycle and production time, and reduce production costs.

[0098] As an example, both the base frame 211 and the side frame 212 are profile structures.

[0099] In some embodiments, please refer to Figures 10 to 12 The battery housing 10 also includes a support frame 13, which includes side supports 131 and support beams 132. Two side supports 131 are spaced apart on the second housing 12, and the first housing 11 covers the support frame 13. The support frame 13 is located in the receiving cavity. Multiple support beams 132 are spaced apart along the height direction between the two side supports 131 to form a multi-layer support space 10a arranged along the height direction. Each layer of support space 10a can be used to install a battery cell assembly 201.

[0100] It should be noted that battery modules 20 can be installed in the support space 10a, or other mechanisms such as the main control box or control device 210 can be installed instead. If battery modules 20 are installed in a single support space 10a, only one battery cell assembly 201 can be installed, and there is no limit to the number of battery modules 20 layers in the battery cell assembly 201.

[0101] The side bracket 131 is used to provide the mounting position for the support beam 132 so that the support beam 132 can support the corresponding battery cell assembly 201.

[0102] As an example, the side bracket 131 is fixed to the second housing 12 by fasteners, such as bolts.

[0103] The number of layers in the support space 10a is not limited; in some embodiments, the number of layers in the support space 10a is 1 to 12. Limiting the number of support spaces 10a within this range is to prevent the side bracket 131 from bearing too much weight due to too many layers, which would affect its service life.

[0104] The number of stacked layers of battery modules 20 can be set in the battery cell assembly 201 according to actual needs. After the battery cell assembly 201 is assembled, it is placed on the support beam 132, which can reduce the possibility of a single bracket 21 bearing a large weight. There is no need to make too much structural reinforcement design for the bracket 21. Only the load-bearing capacity of the bracket 21 needs to be configured, which helps to reduce costs.

[0105] The number of battery modules 20 layers in each support space 10a is unlimited; they can all be the same, all different, or some support spaces 10a may have the same number of battery modules 20 layers while others have different numbers, etc. As an example, combined with... Figure 7 In each support space 10a, the number of battery module 20 layers is the same. In some embodiments not shown, the number of battery module 20 layers in each support space 10a is not the same.

[0106] Furthermore, the side frame 212 of the lower battery module 20 in the battery cell assembly 201 is connected to the side frame 212 or the base frame 211 of the upper battery module 20.

[0107] In some embodiments, please refer to Figure 7 and Figure 8 The battery cell assembly 201 includes at least two layers of battery modules 20. Each layer's support frame 21 includes a base frame 211 and a side frame 212, with the side frame 212 disposed on the base frame 211. In adjacent layers of battery modules 20 of the battery cell assembly 201, the side frame 212 of the lower layer battery module 20 is connected to the side frame 212 of the upper layer battery module 20. Thus, the side frame 212 of the lower layer battery module 20 of the same battery cell assembly 201 can support the upper layer battery module 20. In some embodiments not shown, the side frame 212 of the lower layer battery module 20 is connected to the base frame 211 of the upper layer battery module 20.

[0108] In some embodiments, the number of battery modules 20 in each battery cell assembly 201 is 2 to 12 layers, with the number of layers limited to less than 12 layers, so as to avoid excessive stacking of battery modules 20 and excessive load on the support frame 13.

[0109] The battery device 100 provided in this application embodiment comprises a bracket 21 and battery cells 22 forming a battery module 20. At least one layer of battery modules 20 forms a battery cell assembly 201, and at least one battery cell assembly 201 is located in a receiving cavity. The bracket 21 supports the single layer of battery cells 22 and has a strong load-bearing capacity. Thus, a single battery module 20 can accommodate more battery cells 22, significantly improving the integration and energy density of the battery device 100. Furthermore, by using the bracket 21 to support the single layer of battery cells 22, the assembly efficiency and production efficiency can be improved. In this way, the battery device 100 can meet the high integration requirements of the energy storage system 2000, with high overall structural strength, low cost, simple process, and convenient maintenance. A support space 10a is formed by setting a side bracket 131 and a support beam 132, which accommodates the battery cell assembly 201, and the support beam 132 can support the battery cell assembly 201 within the corresponding support space 10a. In this way, the lower battery cell assembly 201 does not need to bear the weight of the upper battery cell assembly 201, allowing for more layers of battery cell assemblies 201 to be installed in the battery housing 10. No additional support structure is needed inside the battery module 20, thus allowing for a greater number of battery cells 22, further improving the system integration and energy density of the battery device 100, and reducing installation and maintenance difficulty. The side frame 212 of the lower battery module 20 of the same battery cell assembly 201 can support the upper battery module 20. The battery cells 22 within each layer of bracket 21 do not need to bear the weight of the battery cells 22 within the upper layer of bracket 21, reducing the design requirements for the load-bearing capacity of the battery cells 22, lowering production costs, and extending service life.

[0110] In some embodiments, the bracket 21 located in the bottom support space 10a is locked to the second housing 12. This reduces the likelihood of the battery module 20 moving relative to the second housing 12. As an example, the bracket 21 of the bottom battery module 20 is locked to the second housing 12 by fasteners.

[0111] In some embodiments, the bracket 21 is locked to the support beam 132, thereby reducing the possibility of the battery module 20 moving relative to the support frame 13. As an example, except for the bottom support space 10a, the bracket 21 of the bottom battery module 20 in other support spaces 10a is locked to the corresponding layer's support beam 132 by fasteners.

[0112] In some embodiments, two adjacent brackets 21 in the same battery cell assembly 201 are fixedly connected so that the battery cell assembly 201 is connected into an integral structure, which facilitates installation on the support beam 132.

[0113] In some embodiments, combined with Figure 7The support frame 13 also includes a reinforcing member 135, which is connected to the second housing 12 and the side support 131 respectively. The reinforcing member 135 can improve the connection stability between the second housing 12 and the side support 131.

[0114] As an example, the reinforcing member 135 includes two triangular plates and two connecting plates. The two connecting plates are respectively connected to the second housing 12 and the side bracket 131. The triangular plates are respectively connected to the two connecting plates, which can improve the connection stability between the second housing 12 and the side bracket 131 and improve the overall strength of the battery housing 10.

[0115] In some embodiments, please refer to Figure 10 The side support 131 includes vertical frames 1311 and horizontal frames 1312. Multiple vertical frames 1311 are spaced apart on the second housing 12; multiple horizontal frames 1312 are spaced apart between the vertical frames 1311 along the height direction. The vertical frames 1311 and horizontal frames 1312 can form a hollow frame shape, which helps reduce material consumption and weight. As an example, multiple vertical frames 1311 are spaced apart along a first direction X.

[0116] Further, please refer to Figure 10 The side support 131 includes a reinforcing frame 1313, which is used to improve the structural strength and load-bearing capacity of the side support 131. The form of the reinforcing frame 1313 is not limited. As an example, it can be configured such that multiple reinforcing frames 1313 are respectively connected to corresponding vertical frames 1311, or multiple reinforcing frames 1313 are respectively connected to corresponding horizontal frames 1312, or multiple reinforcing frames 1313 are respectively connected to corresponding vertical frames 1311 and horizontal frames 1312. Figure 10 As shown, the end of the reinforcing frame 1313 is connected to the connection between the horizontal frame 1312 and the vertical frame 1311. Furthermore, the reinforcing frame 1313 and part of the horizontal frame 1312 and the vertical frame 1311 form a star shape to further improve the structural strength of the side support 131.

[0117] As an example, the reinforcing frame 1313 is an inclined beam, which is connected to the corresponding vertical frame 1311 and horizontal frame 1312 respectively, to reinforce the side support 131 and improve the structural strength of the side support 131.

[0118] In some embodiments, the support beam 132, vertical frame 1311, horizontal frame 1312, and reinforcing frame 1313 are all profile structures. Profile structures have a simpler manufacturing process, which helps to shorten the development cycle and production time, and reduce production costs.

[0119] In some embodiments, when assembling the battery cell assembly 201, tooling and a forklift are used to lift the battery cell assembly 201 onto the support frame 13, and the forklift and tooling are removed after the battery cell assembly 201 is installed in place.

[0120] In some embodiments, please refer to Figures 10 to 12 The support frame 13 also includes a slide rail 133, on which the bracket 21 is mounted. The slide rail 133 improves the smoothness of movement of the battery cell assembly 201, reduces friction, and consequently reduces wear on the bracket 21 that mates with the slide rail 133, extending its service life and improving assembly efficiency. When assembling the battery cell assembly 201 onto the support frame 13, tooling and a forklift are used to lift the battery cell assembly 201 onto the slide rail 133, and then push it into place along the slide rail 133 to complete the assembly.

[0121] As an example, slide rail 133 is disposed in the second housing 12, and slide rail 133 supports battery cell assembly 201 located in the bottom support space 10a.

[0122] As an example, slide rail 133 is disposed on support beam 132, and slide rail 133 supports battery cell assembly 201 located in other support spaces 10a except for the bottom support space 10a. For example, two slide rails 133 are disposed on both sides of support beam 132 along the second direction Y, so that the two slide rails 133 stably support battery cell assembly 201.

[0123] In some embodiments, please refer to Figure 12 and Figure 13 The support frame 13 also includes a limiting baffle 134, which is located at the end of the slide rail 133. The limiting baffle 134 reduces assembly difficulty, improves convenience, and thus increases production efficiency. When assembling the battery module 20, the battery module 20 can be pushed into the support frame until it reaches the limiting baffle 134, at which point the pushing stops, making operation convenient.

[0124] In some embodiments, please refer to Figure 12 and Figure 13 The slide rail 133 has a guide section 1331 at its beginning. The guide design at the entrance of the slide rail 133 facilitates the guidance of the battery cell assembly 201 into the slide rail 133 and its movement along the slide rail 133. As an example, the guide section 1331 is trumpet-shaped to serve a guiding function.

[0125] In some embodiments, please refer to Figures 3 to 13The battery device 100 includes a battery housing 10 and a battery module 20. The battery housing 10 includes a first housing 11, a second housing 12, and a support frame 13. The first housing 11 and the second housing 12 enclose a receiving cavity; the first housing 11 has an opening 11a facing downwards along the direction of gravity, and the second housing 12 closes the opening 11a, serving as a tray. The battery module 20 includes a bracket 21 and multiple battery cells 22, which are arranged in a single layer on the bracket 21. The support frame 13 includes side supports 131, support beams 132, reinforcing members 135, slide rails 133, and limiting baffles 134. Two side supports 131 are spaced apart from the second housing 12, and the first housing 11 covers the support frame 13, which is located in the receiving cavity. Multiple support beams 132 are spaced apart along the height direction between the two side supports 131 to form four layers of support spaces 10a arranged along the height direction. Each layer of support space 10a is provided with a battery cell assembly 201, which includes two layers of battery modules 20. The bracket 21 also includes side frames 212, which are disposed on the base frame 211. In two adjacent layers of battery modules 20, the side frame 212 of the lower battery module 20 is connected to the side frame 212 of the upper battery module 20. The reinforcing members 135 are connected to the second housing 12 and the side supports 131 respectively. The side supports 131 include vertical frames 1311 and horizontal frames 1312. Multiple vertical frames 1311 are spaced apart on the second housing 12; multiple horizontal frames 1312 are spaced apart between the vertical frames 1311 along the height direction. The side support 131 includes a reinforcing frame 1313, and multiple reinforcing frames 1313 are respectively connected to the corresponding vertical frame 1311 and horizontal frame 1312. A bracket 21 is mounted on a slide rail 133, and the beginning end of the slide rail 133 has a guide portion 1331. A limiting baffle 134 is located at the end of the slide rail 133. The base frame 211, side frames 212, support beam 132, vertical frames 1311, horizontal frames 1312, and reinforcing frames 1313 are of profile structure.

[0126] In this embodiment, the tray has good load-bearing capacity and impact resistance, and is easy to maintain and repair later. The side frame 212 of the lower battery module 20 of the same battery cell assembly 201 can support the upper battery module 20. The reinforcement 135 can improve the connection stability between the second housing 12 and the side support 131. The vertical frame 1311 and the horizontal frame 1312 can form a hollow frame, which helps to reduce material consumption and reduce weight. The reinforcement frame 1313 is used to improve the structural strength and load-bearing capacity of the side support 131. The slide rail 133 can improve the smoothness of the movement of the battery cell assembly 201, reduce friction, and thus reduce the wear of the bracket 21 that cooperates with the slide rail 133, extend service life, and improve assembly efficiency. The limit baffle 134 can reduce the assembly difficulty, improve convenience, and thus improve production efficiency. The guide design at the entrance of the slide rail 133 can easily guide the battery cell assembly 201 into the slide rail 133 and move along the slide rail 133. The production process of profile structures is relatively simple, which helps to shorten the development cycle and production time, and reduce production costs.

[0127] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, include: The battery housing includes a first housing, a second housing, and a support frame, wherein the first housing and the second housing enclose a receiving cavity; the support frame includes side supports and support beams, two side supports are spaced apart from the second housing, and the first housing covers the support frame; a plurality of support beams are spaced apart along the height direction between the two side supports to form a multi-layer support space arranged along the height direction; A battery module includes a bracket and multiple battery cells, wherein the multiple battery cells are arranged in a single layer on the bracket; each layer of the bracket includes a base frame and a side frame, wherein the multiple battery cells are arranged in a single layer on the base frame, and the side frame is disposed on the base frame; Wherein, at least two layers of battery modules constitute a battery cell assembly, and at least one battery cell assembly is disposed in the receiving cavity; each layer of the support space can be provided with one battery cell assembly; in the two adjacent layers of battery modules of the battery cell assembly, the side frame of the lower layer of battery module is connected to the side frame or the base frame of the upper layer of battery module.

2. The battery device according to claim 1, characterized in that, The number of layers in the support space is 1 to 12.

3. The battery device according to claim 1, characterized in that, The number of battery modules in each layer of the support space may be the same or different.

4. The battery device according to claim 1, characterized in that, The support frame also includes: A slide rail is provided on the support beam or the second housing, and the bracket is provided on the slide rail.

5. The battery device according to claim 4, characterized in that, The support frame also includes: A limiting baffle is provided at the end of the slide rail.

6. The battery device according to claim 4, characterized in that, The slide rail has a guide section at its starting end.

7. The battery device according to claim 1, characterized in that, The support frame also includes: The reinforcing members are connected to the second housing and the side bracket, respectively.

8. The battery device according to claim 1, characterized in that, The bracket is locked to the second housing, or the bracket is locked to the support beam.

9. The battery device according to claim 1, characterized in that, The side support includes: Vertical frames, with multiple vertical frames spaced apart from each other, are arranged in the second housing; A plurality of the horizontal frames are connected at intervals between the vertical frames along the height direction; The reinforcing frame, wherein multiple reinforcing frames are respectively connected to the corresponding vertical frame and / or the horizontal frame.

10. The battery device according to claim 9, characterized in that, The supporting beam, the vertical frame, the horizontal frame, and the reinforcing frame are all profile structures.

11. The battery device according to any one of claims 1 to 10, characterized in that, The number of battery modules in each of the battery cells is 2 to 12.

12. The battery device according to any one of claims 1 to 10, characterized in that, The battery cell assembly includes one layer of the battery module, and the bracket includes: The base frame, in which multiple battery cells are arranged in a single layer, is mounted.

13. The battery device according to claim 1, characterized in that, Both the base frame and the side frame are profile structures.

14. The battery device according to claim 1, characterized in that, The individual battery cells in the multi-layer battery module are electrically connected to form a battery cluster; or, The individual battery cells in the single-layer battery module are electrically connected to form a battery cluster or multiple battery clusters.

15. The battery device according to any one of claims 1 to 10, characterized in that, The first box has an opening facing downwards along the direction of gravity, and the second box closes the opening. The first box is locked to the second box.

16. An energy storage device, characterized in that, include: The battery device according to any one of claims 1 to 15.

17. The energy storage device according to claim 16, characterized in that, The energy storage device also includes: A control device connected to the battery device for thermal and / or electrical management of the battery device.

18. The energy storage device according to claim 17, characterized in that, The second container is a tray, and the control device is located on the tray.

19. An energy storage system, characterized in that, include: Energy storage converter; The energy storage device according to any one of claims 16 to 18, wherein the energy storage converter is used to electrically connect the power generation device and the energy storage device.

20. A charging network, characterized in that, include: Charging stations; The energy storage device according to any one of claims 16 to 18 or the energy storage system according to claim 19, wherein the energy storage device or the energy storage system is used to provide electrical energy to the charging pile.

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