Battery device, box body, energy storage device, energy storage system, power utilization device and charging network

Abstract

The embodiment of the utility model provides a battery device, a box body, an energy storage device, an energy storage system, a power utilization device and a charging network, and belongs to the technical field of batteries. The battery device includes: a frame forming an accommodating cavity, the frame including a boundary beam forming a cavity; the blanking cap is mounted at the end part of the edge beam and is used for plugging the open end of the cavity; the blanking cap is clamped with the edge beam through the buckle; and the plurality of single batteries are accommodated in the accommodating cavity. And through the cooperation of the blanking cap and the buckle, the plugging function of the boundary beam can be realized on the basis of having a good anti-corrosion effect, and the overall reliability and safety of the battery device can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a battery device, a housing, an energy storage device, an energy storage system, an electrical device, and a charging network. Background Art

[0002] The battery box in the power battery pack is a roll-pressed frame beam, which is electrophoretically treated for corrosion prevention, but needs to be sealed after electrophoresis. In the related art, welding metal sealing is usually used, but this method will destroy the electrophoretic layer of the roll-pressed frame, and there is room for improvement. Utility Model Content

[0003] The present application provides a battery device, a box, an energy storage device, an energy storage system, an electrical device and a charging network, so as to realize the sealing function of the side beam on the basis of having a good anti-corrosion effect.

[0004] In a first aspect, an embodiment of the present application provides a battery device, including:

[0005] A frame, forming a receiving cavity, the frame comprising side beams, the side beams forming a cavity;

[0006] A plugging cover, mounted on the end of the side beam, for plugging the open end of the cavity;

[0007] Buckle, the blocking cover and the side beam are buckled together by the buckle;

[0008] A plurality of battery cells are accommodated in the accommodation cavity.

[0009] In the above technical solution, through the cooperation between the plugging cover and the buckle, the plugging function of the side beam can be achieved on the basis of having a good anti-corrosion effect, which helps to improve the overall reliability and safety of the battery device.

[0010] In some embodiments, the plugging cover comprises:

[0011] A cover body, used to seal the open end of the cavity;

[0012] A plurality of support parts are connected to a side of the cover body facing the cavity and extend into the plurality of cavities one by one. The buckle passes through the support part and is engaged with the support part.

[0013] In the above technical solution, the blocking cover can effectively close the cavity and provide strong support and sealing protection through the cooperation of the cover body and the plurality of support parts combined with the fastening method of the buckle.

[0014] In some embodiments, the side beam forms a plurality of the cavities distributed along a first direction, the blocking cover includes a plurality of the supporting portions distributed along the first direction, two adjacent cavities are separated by a partition, and the buckle passes through the partition.

[0015] In the above technical solution, the blocking cover can form a stable closed system by combining the plurality of supporting parts distributed along the first direction with the snap-fit ​​structure.

[0016] In some embodiments, the buckle includes: a base and a clamping portion connected to the base, the base extends from the first cavity in the first direction to the last cavity in the first direction and passes through adjacent walls of multiple support portions.

[0017] In the above technical solution, the base of the buckle passes through the wall surfaces of the plurality of support parts from the first cavity and extends to the last cavity, so as to form a tight connection between the plurality of cavities.

[0018] In some embodiments, the base abuts against an inner wall of the last cavity along the first direction.

[0019] In the above technical solution, the abutment between the base and the inner wall of the last cavity in the first direction can improve the connection stability between the buckle and the side beam.

[0020] In some embodiments, the clamping portion includes:

[0021] A main body arm is connected to the base, a wall surface of the first cavity in the first direction is provided with a mounting hole, the buckle is installed through the mounting hole, and the main body arm blocks the mounting hole;

[0022] An elastic arm is connected to the base and spaced apart from the main body arm. The elastic arm has a lower rigidity than the main body arm. The elastic arm abuts against an inner wall of the first support portion distributed along the first direction.

[0023] In the above technical solution, through the cooperation of the elastic arm and the main body arm, the snap-fit ​​function can be effectively realized, and the stability and firmness of the snap-fit ​​structure can be improved, thereby reducing the risk of the buckle loosening or falling off during use.

[0024] In some embodiments, the battery device further comprises:

[0025] A sealing member is sleeved on the outside of each of the supporting parts and is clamped between the supporting part and the inner wall of the cavity.

[0026] In some embodiments, a protrusion is provided on the bottom wall of the last cavity of the side beam along the first direction, and both the base and the support portion are molded to match the protrusion.

[0027] In the above technical solution, the conformal fit can make the support portion closely contact with the cavity and achieve a stable connection.

[0028] In some embodiments, two adjacent cavities are separated by a partition, and the buckle passes through the partition.

[0029] In the above technical solution, the partition portion can improve the structural stability of the side beam, and the buckle passing through the partition portion can enhance the connection strength between the side beam and the support portion.

[0030] In some embodiments, the side beams are roll-formed.

[0031] In the above technical solution, roll forming is performed by bending the metal strip, and usually no additional metal cutting or material removal is required, thus saving raw materials.

[0032] In the above technical solution, the sealing member is clamped between the supporting portion and the inner wall of the cavity, which can play a role of sealing and buffering, thereby improving the overall structural stability of the side beam and the blocking cover.

[0033] In a second aspect, an embodiment of the present application provides a box, comprising:

[0034] A frame, forming a receiving cavity for receiving a battery cell, the frame comprising a plurality of side beams, the side beams forming a plurality of cavities, and two adjacent cavities being separated by a partition;

[0035] A plug cover is installed at the end of the side beam;

[0036] A buckle, the blocking cover and the side beam are buckled together by the buckle, and the buckle passes through the partition.

[0037] In the above technical solution, the buckle fixes the blocking cover and the side beam together by penetrating the partition, which can enhance the structural stability of the box body and improve the safety of the battery cell during long-term use.

[0038] In a third aspect, an embodiment of the present application provides an energy storage device, comprising: a plurality of battery devices as described in any one of the above items, wherein the battery devices are used to store or provide electrical energy.

[0039] In a fourth aspect, an embodiment of the present application provides an energy storage system, comprising: a power conversion device and an energy storage device as described above, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

[0040] In a fifth aspect, an embodiment of the present application provides an electrical device, comprising: a battery device as described in any one of the above, an energy storage device as described in the above, or an energy storage system as described in the above, wherein the battery device is used to store or provide electrical energy.

[0041] In a sixth aspect, an embodiment of the present application provides a charging network, comprising: a charging pile and an energy storage device as described above or an energy storage system as described above, wherein the energy storage device is used to provide electrical energy to the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the structure of an energy storage system provided in some embodiments of the present application;

[0044] Figure 2 A schematic diagram of the structure of a charging network provided in some embodiments of the present application;

[0045] Figure 3 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0046] Figure 4 An exploded view of the structure of a battery device provided in some embodiments of the present application;

[0047] Figure 5 A schematic diagram of the structure of the frame of the box provided in some embodiments of the present application;

[0048] Figure 6 An exploded view of the structure of the side beams of the box provided in some embodiments of the present application;

[0049] Figure 7 A schematic diagram of the structure of the side beams of the box provided in some embodiments of the present application;

[0050] Figure 8 A schematic diagram of the structure of a blocking cover of a box provided in some embodiments of the present application;

[0051] Fig. 9 A schematic diagram of the structure of the buckle of the box provided in some embodiments of the present application.

[0052] Reference numerals:

[0053] Energy storage device 1, power conversion device 2, power generation equipment 3, charging pile 4, connector 5;

[0054] Vehicles 1000;

[0055] Battery device 100;

[0056] Box body 10, first box body 11, second box body 12;

[0057] Frame 110, accommodating cavity 111;

[0058] Side beam 120, cavity 121, partition 122, mounting hole 123;

[0059] Battery cell 20;

[0060] The plugging cover 30, the cover body 310, and the supporting part 320;

[0061] Buckle 40, base 410, clamping portion 420, main body arm 421, elastic arm 422;

[0062] Controller 200; Motor 300;

[0063] The first direction X. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0066] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0067] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0068] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0069] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0070] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0071] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0072] The battery cell can be cylindrical, flat, rectangular or other shapes, and the present application embodiment does not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the present application embodiment does not limit this.

[0073] The battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode collector includes a positive electrode collector body and a positive electrode ear. The positive electrode active material layer is coated on the surface of the positive electrode collector body. The positive electrode ear is not coated with the positive electrode active material layer and protrudes from the positive electrode collector body. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode collector includes a negative electrode collector body and a negative electrode ear. The negative electrode active material layer is coated on the surface of the negative electrode collector body. The negative electrode ear is not coated with the negative electrode active material layer and protrudes from the negative electrode collector body. The negative electrode current collector may be made of copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current can be passed without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0074] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0075] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery cells, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Battery cells are used to store or provide electrical energy.

[0076] In the related art, the rolled frame beams are usually subjected to electrophoretic treatment to obtain good anti-corrosion effect of the rolled frame beams of the battery box. However, in order to reduce the risk of foreign matter entering the rolled frame beams, the rolled frame beams need to be sealed. In the prior art, welded metal sealing is usually used. However, this method will destroy the electrophoretic layer of the rolled frame and affect the anti-corrosion effect of the rolled frame beams. There is room for improvement.

[0077] Based on the above considerations, in order to solve the problem of metal plugging after electrophoresis welding damaging the electrophoretic layer, the present application designs a battery device, including: a frame, a plug cover, a buckle and a plurality of battery cells, the frame forms a accommodating cavity, and the plurality of battery cells are accommodated in the accommodating cavity, the frame includes a side beam, the side beam forms a plurality of cavities, and two adjacent cavities are separated by a partition, the plug cover is installed at the end of the side beam to seal the open end of the cavity, the plug cover is clamped to the side beam by a buckle, and the buckle passes through the partition.

[0078] In a battery device of this structure, the impact of the sealing process on the electrophoretic layer can be reduced by a snap-in insertion type non-metallic sealing method, thereby achieving a sealing function on the basis of having a good anti-corrosion effect, which helps to improve the production efficiency of the battery device.

[0079] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0080] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0081] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0082] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0083] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0084] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0085] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0086] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0087] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0088] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery devices, such as mobile phones, portable devices, laptop computers, battery vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Battery devices are used to store or provide electrical energy.

[0089] The embodiment of the present application provides an energy storage device, including one or more battery clusters (Battery Cluster) to increase the voltage and capacity of the energy storage device. The battery cluster may include multiple battery devices, and the multiple battery devices are connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0090] The energy storage device can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems or temporary power supply systems. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during low electricity consumption and provide electrical energy to relevant users or electrical devices during peak electricity consumption. The energy storage system provided in the embodiment of the present application can be any power system that requires the use of an energy storage device.

[0091] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0092] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters, wherein the battery clusters are housed in the cabinet.

[0093] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a master control module, a power distribution module, and a fire protection module.

[0094] As an example, the thermal management module may include a liquid cooling unit that provides cooling liquid for regulating the temperature of the battery cells to each battery device through a pipeline.

[0095] As an example, the main control module can be used as a battery management unit of a battery cluster to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power or temperature of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The main control module includes a slave battery management unit SBMU (SBMU), a fusion switch and other modules.

[0096] As an example, the master control module can be used as a battery management unit of an energy storage device to monitor and manage the energy storage device. The master control module can monitor information such as the current, voltage, power, state of charge or temperature of the energy storage device. For example, the charging and discharging current, voltage, etc. of the energy storage device can be controlled. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), Ethernet ETH (EtherNet, ETH) and a fiber optic conversion module and other modules.

[0097] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc., which are used to detect, alarm or extinguish fire in the energy storage system.

[0098] As an example, the power distribution device may be used to distribute power to the power modules of the energy storage device.

[0099] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using energy storage devices, such as mobile phones, portable devices, laptop computers, battery vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Energy storage devices are used to store or provide electrical energy.

[0100] In some embodiments, Figure 1 As shown, the energy storage system may include one or more energy storage devices 1 and a power converter 2 (Power Converter System, PCS for short), and the power converter 2 is used to be connected between the power generation device 3 and the energy storage device 1. The power generation device 3 is used to generate electric energy, and the electric energy generated by the power generation device 3 can be stored in the energy storage device 1 through the power converter 2. As an example, the power generation device 3 may specifically be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. Among them, the specific type of the power generation device 3 is not limited in this application.

[0101] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using energy storage systems, such as mobile phones, portable devices, laptop computers, battery vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Energy storage devices are used to store or provide electrical energy.

[0102] Please refer to Figure 2The embodiment of the present application provides a charging network, including a charging pile 4 and an energy storage device 1, wherein the charging pile 4 is electrically connected to the energy storage device 1, and the energy storage device 1 is used to provide electric energy to the charging pile 4. The charging pile 4 is electrically connected to the battery device in the energy storage device 1 through a cable, and the battery device can provide its stored electric energy to the charging pile 4. The charging pile 4 has one or more connectors 5, which are used to connect to an electric device (such as a vehicle) so as to replenish energy to the electric device.

[0103] The energy storage device can be located inside the charging pile (such as an integrated storage and charging machine) or outside the charging pile.

[0104] The embodiment of the present application provides an electric device using a battery cell or a battery device or an energy storage device or an energy storage system as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, and a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0105] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0106] Please refer to Figure 3 , Figure 3 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle, and the battery device 100 may be provided at the bottom, head or tail of the vehicle. The battery device 100 may be used to power the vehicle, for example, the battery device 100 may be used as an operating power source for the vehicle. The vehicle may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and operating power requirements of the vehicle during driving.

[0107] In some embodiments of the present application, the battery device 100 can be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0108] Please refer to Figure 4 , Figure 4The structural exploded diagram of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and a plurality of battery cells 20, and the battery cells 20 are used to be accommodated in the box body 10. Among them, the box body 10 is used to provide an assembly space for the battery cells 20, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include a first box body 11 and a second box body 12, and the first box body 11 and the second box body 12 cover each other, and the first box body 11 and the second box body 12 jointly define an assembly space for accommodating the battery cells 20. The second box body 12 can be a hollow structure with one end open, and the first box body 11 can be a plate-like structure. The first box body 11 covers the open side of the second box body 12, so that the first box body 11 and the second box body 12 jointly define the assembly space; the first box body 11 and the second box body 12 can also be hollow structures with one side open, and the open side of the first box body 11 covers the open side of the second box body 12. Of course, the box body 10 formed by the first box body 11 and the second box body 12 can be in various shapes, such as a cylinder, a cuboid, etc.

[0109] In the battery device 100, multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells 20 are connected in series and in parallel. Multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 can also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between multiple battery cells 20.

[0110] Please refer to Figure 4 , Figure 4 A partial structural diagram of a battery device 100 provided in some embodiments of the present application. The battery device 100 includes multiple rows of battery cells 20, and the multiple rows of battery cells 20 are arranged along the second direction, and each row of battery cells 20 includes multiple battery cells 20 arranged along the third direction. The second direction and the third direction are the length direction of the box body 10 and the width direction of the box body 10, respectively, and the second direction and the third direction are perpendicular to each other.

[0111] According to some embodiments of the present application, referring to Figure 5-Figure 7 , Figure 5 This is a schematic diagram of the structure of the frame 110 of the box 10 provided in some embodiments of the present application. Figure 6 This is a structural exploded view of the side beam 120 of the box body 10 provided in some embodiments of the present application. Figure 7The schematic diagram of the structure of the side beam 120 of the box body 10 provided in some embodiments of the present application. The present application provides a battery device 100, including: a frame 110, a plug cover 30, a buckle 40 and a plurality of battery cells 20.

[0112] like Figure 5 As shown, the frame 110 has good structural strength and sealing performance, and can provide structural support for the battery device 100. The frame 110 is mainly used to form a receiving cavity 111 to accommodate and fix the battery cell 20, thereby reducing the displacement or damage of the battery cell 20 during use. Exemplarily, the frame 110 can be made of a material with high strength and durability, such as aluminum alloy, carbon fiber or other composite materials, to maintain the structural stability of the battery device 100 during use.

[0113] like Figure 6 and Figure 7 As shown, the frame 110 includes at least one side beam 120, which is an important component of the frame 110 and is usually located around or at the edge of the frame 110 to strengthen and stabilize the structure of the frame 110. A single side beam 120 can form a plurality of cavities 121, and adjacent cavities 121 are separated by partitions 122, thereby enhancing the mechanical strength of the side beam 120. In addition, a plugging cover 30 is installed at the end of the side beam 120 to seal the open end of the cavity 121 to reduce the risk of external substances entering the cavity 121. At the same time, the plugging cover 30 includes sealing portions corresponding to the plurality of cavities 121 to enhance the sealing performance.

[0114] The blocking cover 30 and the side beam 120 are connected by means of the buckle 40, which makes the connection between the blocking cover 30 and the side beam 120 simpler, thereby reducing the installation time and difficulty, and making the installation and disassembly process more efficient. At the same time, the buckle 40 passes through the partition 122, which can improve the firmness and stability of the connection. In addition, the buckle 40 is designed to have a certain locking function after connection, which can effectively reduce the risk of loosening during transportation, vibration or other operations.

[0115] The battery cell 20 is the core part of the battery device 100. Multiple battery cells 20 are accommodated in the accommodating cavity 111, and the multiple battery cells 20 can be connected in series, in parallel or mixed. The battery cells 20 can also be of different types, such as liquid batteries or solid-state batteries. The accommodating cavity 111 has a fixed structure, which can reduce the displacement or vibration of the battery cell 20 during use and maintain the stability of the battery cell 20, thereby effectively and timely preventing safety risks such as poor contact or short circuit caused by changes in battery position.

[0116] In the above description, through the cooperation of the plugging cover 30 and the buckle 40 , the plugging function of the side beam 120 can be achieved on the basis of having a good anti-corrosion effect, which helps to improve the overall reliability and safety of the battery device 100 .

[0117] According to some embodiments of the present application, referring to Figure 8 , Figure 8 The structural diagram of the plugging cover 30 of the box body 10 provided in some embodiments of the present application. The plugging cover 30 includes a cover body 310 and a plurality of supporting parts 320, the cover body 310 is used to block the open end of the cavity 121, the plurality of supporting parts 320 are connected to the side of the cover body 310 facing the cavity, and extend into the plurality of cavities 121 one by one, and the buckle 40 passes through the supporting part 320 and is engaged with the supporting part 320.

[0118] The main function of the cover body 310 is to block the open end of the cavity 121, and is used to seal or protect the inside of the cavity 121. The shape and size of the cover body 310 match the end of the side beam 120. Multiple support parts 320 are connected to the side of the cover body 310 facing the cavity 121, and extend into the multiple cavities 121 one by one. The support part 320 is a columnar hollow structure, which matches the corresponding cavity 121. The main function of the support part 320 is to extend into the cavity 121 to fix the plugging cover 30, and can also enhance the structural stability of the plugging cover 30, which helps to evenly bear the force on the plugging cover 30 when closing the cavity 121, and reduce the risk of deformation or falling off of the plugging cover 30 due to external force or pressure changes.

[0119] The buckle 40 passes through the support portion 320 and firmly connects the cover body 310 and the support portion 320 by insertion. Exemplarily, the buckle 40 can be in different forms, such as a spring buckle, a latch buckle or a rotating buckle, etc. The material of the buckle 40 has high tensile strength and elasticity to reduce the risk of failure due to frequent operation or pressure changes during use.

[0120] In the above description, the blocking cover 30 can effectively close the cavity 121 and provide strong support and sealing protection through the cooperation of the cover body 310 and the multiple support parts 320 combined with the fastening method of the buckle 40.

[0121] According to some embodiments of the present application, referring to Figure 8 and Fig. 9 , Fig. 9A schematic diagram of the structure of the buckle 40 of the box 10 provided in some embodiments of the present application. The side beam 120 forms a plurality of cavities 121 distributed along the first direction X, the plug cover 30 includes a plurality of support portions 320 distributed along the first direction X, the buckle 40 includes a base 410 and a clamping portion 420 connected to the base 410, the base 410 extends from the first cavity 121 in the first direction X to the last cavity 121 in the first direction X, and penetrates the adjacent wall surfaces of the plurality of support portions 320.

[0122] The first direction X is the height direction of the box body 10. The side beam 120 forms a plurality of cavities 121 distributed along the first direction X. Adjacent cavities 121 are separated by partitions 122, which can enhance the strength of the overall structure. The blocking cover 30 includes a plurality of support portions 320 distributed along the first direction X. The support portions 320 can reduce the risk of deformation of the blocking cover 30 due to uneven force. The cavities 121 and the support portions 320 are installed one-to-one. At the same time, the support portions 320 extend into the cavity 121 and directly contact the wall of the cavity 121, which can provide additional supporting force.

[0123] The buckle 40 is composed of a base 410 and a snap-on portion 420 connected to the base 410. The base 410 is the main part of the buckle 40 and has a certain rigidity. It is used to penetrate the partition 122 and support the connection between the buckle 40 and other components. The snap-on portion 420 is the end of the buckle 40 along the first direction X and is used to fix the buckle 40.

[0124] The base 410 passes through the adjacent walls of the multiple support parts 320 from the first cavity 121 in the first direction X and extends to the last cavity 121 in the first direction X. The adjacent walls of the multiple support parts 320 are the walls that the adjacent support parts 320 are close to, and the length of the base 410 along the first direction X is less than the length of the multiple support parts 320 along the first direction X.

[0125] In the above description, the blocking cover 30 can form a stable closed system by combining multiple support parts 320 distributed along the first direction X with the buckle 40 structure. At the same time, the base 410 of the buckle 40 passes through the wall surfaces of multiple support parts 320 from the first cavity 121 and extends to the last cavity 121, thereby forming a tight connection between the multiple cavities 121.

[0126] According to some embodiments of the present application, referring to Figure 8 and Fig. 9 , the base 410 abuts against the inner wall of the last supporting portion 320 along the first direction X.

[0127] One end of the base 410 abuts against the inner wall of the last supporting portion 320 along the first direction X, which can reduce the impact on the structural stability of the side beam 120 while maintaining the connection strength between the buckle 40 and the side beam 120 .

[0128] The base 410 abutting against the inner wall of the support portion 320 can improve the overall stability of the blocking cover 30 structure. One end of the base 410 can also be unfixed on the side beam 120 to reduce the risk of failure of the buckle 40 due to external factors and improve the buckle 40's ability to resist deformation.

[0129] In the above description, the abutment between the base 410 and the inner wall of the last supporting portion 320 in the first direction X can improve the connection stability between the buckle 40 and the side beam 120 .

[0130] According to some embodiments of the present application, referring to Fig. 9 The clamping portion 420 includes a main body arm 421 and an elastic arm 422 , and both the main body arm 421 and the elastic arm 422 are connected to the base 410 .

[0131] The main arm 421 is connected to the base 410 and is the main connecting part of the clamping part 420. It is used to withstand external forces during the connection process and is responsible for providing stable structural support and fixation. The elastic arm 422 is also connected to the base 410, separated from the main arm 421, and is respectively located on both sides of the main arm 421, for providing elastic constraint or rebound effect.

[0132] The main arm 421 is T-shaped, and the width of the end is greater than the width of the connection part with the base 410 and is the same as the width of the base 410. The width of the elastic arm 422 is smaller than the width of the main arm 421 and is separated from the main arm 421 by a certain distance. At the same time, the stiffness of the elastic arm 422 is lower than that of the main arm 421, and it can bend toward the main arm 421 during installation. In addition, the elastic arm 422 can also have a rebound effect and rebound to its original position after installation is completed.

[0133] A mounting hole 123 is provided on the wall surface of the first cavity 121 along the first direction X, and the buckle 40 can be installed through the mounting hole 123. During installation, the base 410 first passes through the mounting hole 123, and then the elastic arm 422 bends toward the main arm 421 and passes through the mounting hole 123 until the elastic arm 422 abuts against the inner wall of the first support portion 320 distributed along the first direction X. At the same time, the end of the main arm 421 with a larger width blocks the mounting hole 123, and the installation is completed and locked. After installation, the main arm 421 completely covers the mounting hole 123 through the blocking effect, which can reduce the risk of exposure of the mounting hole 123 and help enhance the sealing and stability of the overall structure.

[0134] In the above description, through the cooperation of the elastic arm 422 and the main arm 421, the snap-fit ​​function can be effectively realized, and the stability and firmness of the snap-fit ​​structure can be improved, thereby reducing the risk of the buckle 40 loosening or falling off during use.

[0135] According to some embodiments of the present application, the battery device 100 may further include a sealant, and each support portion 320 is provided with a sealant outside and clamped between the support portion 320 and the inner wall of the cavity 121 .

[0136] The seal is mainly used to seal the cavity 121, reduce the impact of the external environment on the inside of the side beam 120, and play a buffering role. The seal is mounted on the outside of the support part 320 and clamped between the support part 320 and the inner wall of the cavity 121. It can reduce the vibration between the support part 320 and the side beam 120 caused by various reasons and extend the service life of the support part 320. The seal can also cooperate with the buckle 40 to increase the connection strength between the support part 320 and the side beam 120.

[0137] The seal may be made of elastic materials such as rubber and silicone. When the seal is clamped between the support portion 320 and the inner wall of the cavity 121, a certain degree of compression may be applied to form a tight contact to achieve the purpose of sealing.

[0138] In the above description, the seal is clamped between the support portion 320 and the inner wall of the cavity 121 , which can play a role of sealing and buffering, thereby improving the overall structural stability of the side beam 120 and the blocking cover 30 .

[0139] According to some embodiments of the present application, a protrusion is provided on the bottom wall of the last cavity 121 of the side beam 120 along the first direction X, the support portion 320 is contoured with the protrusion, and the base 410 is contoured with the inner wall of the support portion 320 .

[0140] Specifically, a protrusion is provided on the inner wall of the last cavity 121 along the first direction X to avoid parts contacting the side beam 120. The shape of the support portion 320 matches the protrusion so that the support portion 320 is in close contact with the cavity 121 and a stable connection is achieved. At the same time, a protrusion is also provided on the inner wall of the support portion 320 accordingly, and one end of the base 410 abutting against the inner wall of the support portion 320 has a shape matching the inner wall of the support portion 320.

[0141] In addition, the protrusions provided on the inner wall of the cavity 121 can provide additional supporting force, thereby improving the connection strength between the support portion 320 and the cavity 121 .

[0142] According to some embodiments of the present application, the side beam 120 is roll-formed.

[0143] Roll forming is a common metalworking process that gradually shapes metal materials through a series of rollers. It is usually used to mass-produce metal parts with specific cross-sectional shapes.

[0144] Specifically, the metal strip is usually gradually pressed into the desired shape by a group of arranged forming rollers at room temperature or slightly heated. The function of each roller is to press or bend the material into a specific shape until the last group of rollers completes the final forming.

[0145] In the above description, roll forming is performed by bending a metal strip, and usually no additional metal cutting or material removal is required, thus saving raw materials.

[0146] According to some embodiments of the present application, referring to Figure 5 and Figure 6 The present application also provides a box body 10 , which includes: a frame 110 , a blocking cover 30 and a buckle 40 .

[0147] The frame 110 has good structural strength and sealing properties, and can provide structural support for the battery device 100. The frame 110 can form a accommodating cavity 111 for accommodating the battery cell 20, thereby reducing the displacement or damage of the battery cell 20 during use. Exemplarily, the frame 110 can be made of a material with high strength and durability, such as aluminum alloy, carbon fiber or other composite materials, to maintain the structural stability of the battery device 100 during use.

[0148] The frame 110 includes multiple side beams 120, which are an important component of the frame 110 and are usually located around or at the edges of the frame 110 to strengthen and stabilize the structure of the frame 110. A single side beam 120 can form multiple cavities 121, and adjacent cavities 121 are separated by partitions 122, thereby enhancing the mechanical strength of the side beam 120. In addition, a plugging cover 30 is installed at the end of the side beam 120 to seal the open end of the cavity 121 and reduce the risk of external substances entering the cavity 121. At the same time, the plugging cover 30 includes sealing parts corresponding to the multiple cavities 121 to enhance the sealing performance.

[0149] The blocking cover 30 and the side beam 120 are connected by means of the buckle 40, which makes the connection between the blocking cover 30 and the side beam 120 simpler, thereby reducing the installation time and difficulty, and making the installation and disassembly process more efficient. At the same time, the buckle 40 passes through the partition 122, which can improve the firmness and stability of the connection. In addition, the buckle 40 is designed to have a certain locking function after connection, which can effectively reduce the risk of loosening during transportation, vibration or other operations.

[0150] In the above description, the buckle 40 fixes the blocking cover 30 and the side beam 120 together by penetrating the partition 122, which can enhance the structural stability of the box body 10 and improve the safety of the battery cell 20 during long-term use.

[0151] According to some embodiments of the present application, the present application also provides an energy storage device 1, which includes a plurality of battery cells 20 of any of the above schemes, and the battery cells 20 are used to store or provide electrical energy; or the energy storage device 1 includes a plurality of battery devices 100 of any of the above schemes, and the battery devices 100 are used to store or provide electrical energy.

[0152] According to some embodiments of the present application, the present application also provides an energy storage system, which includes: a power conversion device 2 and an energy storage device 1 of any of the above schemes, and the power conversion device 2 is used to electrically connect the power generation equipment 3 and the energy storage device 1.

[0153] According to some embodiments of the present application, the present application further provides an electric device. The electric device includes a battery cell 20 of any of the above solutions, and the battery cell 20 is used to store or provide electric energy; or the electric device includes a battery device 100 of any of the above solutions, and the battery device 100 is used to store or provide electric energy; or the electric device includes an energy storage device 1 of any of the above solutions, and the battery cell 20 or the battery device 100 is used to store or provide electric energy; or the electric device includes an energy storage system of any of the above solutions, and the battery cell 20 or the battery device 100 is used to store or provide electric energy.

[0154] The power-consuming device may be any of the aforementioned devices or systems using the battery device 100 .

[0155] According to some embodiments of the present application, the present application also provides a charging network, which includes a charging pile 4 and an energy storage device 1 of any of the above schemes or an energy storage system of any of the above schemes, and the energy storage device 1 is used to provide electrical energy to the charging pile 4.

[0156] The energy storage device 1 may be located inside the charging pile 4 (eg, an integrated storage and charging device), or may be located outside the charging pile 4 .

[0157] According to some embodiments of the present application, see Figure 5-Figure 9 , the present application provides a battery device.

[0158] The battery device 100 includes a box body 10 and multiple battery cells 20, wherein the box body 10 includes a frame 110, a plug cover 30 and a buckle 40, the frame 110 forms a accommodating cavity 111, and the multiple battery cells 20 are accommodated in the accommodating cavity 111, the frame 110 includes a side beam 120, the side beam 120 forms a plurality of cavities 121, and two adjacent cavities 121 are separated by a partition 122, the plug cover 30 is installed at the end of the side beam 120, and is clamped to the side beam 120 by the buckle 40, and the buckle 40 passes through the partition 122.

[0159] In addition, the blocking cover 30 includes a cover body 310 and multiple support parts 320. The cover body 310 is used to seal the open end of the cavity 121. The multiple support parts 320 are connected to the inner side of the cover body 310 and extend into the multiple cavities 121 one by one. The buckle 40 passes through the support part 320 and is snap-connected with the support part 320. The battery device 100 may also include a sealing member, which is mounted on the outside of each support part 320 and clamped between the support part 320 and the inner wall of the cavity 121.

[0160] The side beam 120 forms a plurality of cavities 121 distributed along the first direction X, the blocking cover 30 includes a plurality of support portions 320 distributed along the first direction X, the buckle 40 includes a base 410 and a clamping portion 420 connected to the base 410, the base 410 penetrates through the adjacent wall surfaces of the plurality of support portions 320 from the first cavity 121 in the first direction X and extends to the last cavity 121 in the first direction X, and the base 410 abuts against the inner wall of the last cavity 121 in the first direction X.

[0161] The clamping portion 420 includes a main arm 421 and an elastic arm 422. The main arm 421 is connected to the base 410. The wall surface of the first cavity 121 in the first direction X is provided with a mounting hole 123. The buckle 40 is installed through the mounting hole 123, and the main arm 421 blocks the mounting hole 123. At the same time, the elastic arm 422 is connected to the base 410 and is spaced apart from the main arm 421. The stiffness of the elastic arm 422 is lower than that of the main arm 421. The elastic arm 422 abuts against the inner wall of the first support portion 320 distributed along the first direction X.

[0162] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0163] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0164] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A frame, forming a receiving cavity, the frame comprising side beams, the side beams forming a cavity; A plugging cover, mounted on the end of the side beam, for plugging the open end of the cavity; Buckle, the blocking cover and the side beam are buckled together by the buckle; A plurality of battery cells are accommodated in the accommodation cavity.

2. The battery device according to claim 1, characterized in that: The plugging cover comprises: A cover body, used to seal the open end of the cavity; The support part is connected to a side of the cover body facing the cavity and extends into the plurality of cavities one by one. The buckle passes through the support part and is engaged with the support part.

3. The battery device according to claim 2, characterized in that: The side beam forms a plurality of the cavities distributed along a first direction, the blocking cover includes a plurality of the supporting parts distributed along the first direction, two adjacent cavities are separated by a partition, and the buckle passes through the partition.

4. The battery device according to claim 3, characterized in that: The buckle comprises: a base and a clamping portion connected to the base, and the base extends from the first cavity to the last cavity in the first direction and penetrates through adjacent walls of a plurality of support portions.

5. The battery device according to claim 4, characterized in that: The base body abuts against an inner wall of the last supporting portion along the first direction.

6. The battery device according to claim 4, characterized in that: The clamping portion comprises: A main body arm is connected to the base, a wall surface of the first cavity in the first direction is provided with a mounting hole, the buckle is installed through the mounting hole, and the main body arm blocks the mounting hole; An elastic arm is connected to the base and spaced apart from the main body arm. The elastic arm has a lower rigidity than the main body arm. The elastic arm abuts against an inner wall of the first support portion distributed along the first direction.

7. The battery device according to claim 2, characterized in that: Also includes: A sealing member is sleeved on the outside of each of the supporting parts and is clamped between the supporting part and the inner wall of the cavity.

8. The battery device according to claim 4, characterized in that: The bottom wall of the last cavity of the side beam along the first direction is provided with a protrusion, the support portion is conformed to the protrusion, and the base is conformed to the inner wall of the support portion.

9. The battery device according to any one of claims 1 to 8, characterized in that: Two adjacent cavities are separated by a partition, and the buckle passes through the partition.

10. The battery device according to any one of claims 1 to 8, characterized in that: The side beam is roll-formed.

11. A box, characterized in that: include: A frame, forming a receiving cavity for receiving a battery cell, the frame comprising a plurality of side beams, the side beams forming a plurality of cavities, and two adjacent cavities being separated by a partition; A plug cover is installed at the end of the side beam; A buckle, the blocking cover and the side beam are buckled together by the buckle, and the buckle passes through the partition.

12. An energy storage device, characterized in that: include: A plurality of battery devices as claimed in any one of claims 1 to 10, wherein the battery devices are used to store or provide electrical energy.

13. An energy storage system, characterized in that: include: A power conversion device and an energy storage device as claimed in claim 12, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

14. An electrical device, characterized in that: include: The battery device as claimed in any one of claims 1 to 10, the energy storage device as claimed in claim 12, or the energy storage system as claimed in claim 13, wherein the battery device is used to store or provide electrical energy.

15. A charging network, characterized in that: include: A charging pile and an energy storage device as claimed in claim 12 or an energy storage system as claimed in claim 13, wherein the energy storage device is used to provide electrical energy to the charging pile.

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