Battery device and electric device

Abstract

The invention provides a battery device and a power utilization device. The battery device comprises a single battery and a box body, the box body comprises a containing space and a frame, the single battery is contained in the containing space, the frame is arranged along the periphery of the containing space, and a channel is formed in the frame and surrounds the periphery of the containing space. The frame is further provided with an inlet and an outlet, the inlet is connected with the containing space and the channel, and the outlet is connected with the channel and the outside of the box body. A blocking part is further arranged in the channel and divides the channel into a flowing path which is connected with the inlet and the outlet and approximately surrounds the containing space. According to the battery device, the influence on the external environment when the battery device is abnormal can be effectively reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0003] In the development of battery technology, the impact of abnormal states such as leakage or thermal runaway on the external environment directly affects the reliability, cost of use, and user experience of end products. Therefore, how to effectively reduce the impact of battery abnormalities on the external environment is a pressing technical problem that needs to be solved in battery technology. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device and an electrical device that can effectively reduce the impact on the external environment when the battery device malfunctions.

[0005] In a first aspect, embodiments of this application provide a battery device, which includes a battery cell and a housing. The housing includes a receiving space and a frame. The battery cell is received in the receiving space, and the frame is disposed along the outer periphery of the receiving space. A channel is formed inside the frame, surrounding the outer periphery of the receiving space. The frame also has an inlet and an outlet. The inlet connects the receiving space and the channel, and the outlet connects the channel and the outside of the housing. A blocking component is also provided within the channel, dividing the channel into a flow path connecting the inlet and the outlet, and substantially surrounding the receiving space.

[0006] The blocking component in the above-described technical solution can impede the flow of fluid, providing a flow path that roughly surrounds the containment space for the fluid flowing from the inlet to the outlet, thereby extending the fluid's flow path and time within the channel. This allows the fluid to effectively reduce its temperature within the channel, and simultaneously, impurities such as metal particles mixed in the fluid can better settle within the channel. This reduces the risk of damage to other components located outside the battery device after the fluid is discharged, as well as the risk of significant environmental pollution. Thus, it effectively reduces the impact on the external environment when the battery device malfunctions.

[0007] In some embodiments of the first aspect, the housing further includes a partition component disposed within the channel, dividing the channel into N sub-channels along a direction intersecting the channel's extension direction. Inlet and outlet are respectively provided for different sub-channels, and N is greater than or equal to 2. The partition component has connecting holes through which adjacent sub-channels are connected.

[0008] The above technical solution, by setting up a separating component, can further extend the flow path and time of the fluid in the channel, thereby further reducing the impact on the external environment when the battery device malfunctions.

[0009] In some embodiments of the first aspect, the flow path approximately surrounds the containment space N times.

[0010] The above technical solution can further extend the flow path and time of fluid in the channel, thereby further reducing the impact on the external environment when the battery device malfunctions.

[0011] In some embodiments of the first aspect, the separating component includes a first separator and a second separator, which are spaced apart along a direction intersecting the extension direction of the channel, dividing the channel into a first sub-channel, a second sub-channel, and a third sub-channel stacked along a direction intersecting the extension direction of the channel, with the second sub-channel located between the first and third sub-channels. The connecting hole includes a first hole and a second hole, the first hole being disposed on the first separator, through which the first and second sub-channels communicate, and the second hole being disposed on the second separator, through which the second and third sub-channels communicate. An inlet is provided corresponding to one of the first and third sub-channels, and an outlet is provided corresponding to the other of the first and third sub-channels.

[0012] The above technical solution, by setting the channel as a three-layer structure including a first sub-channel, a second sub-channel and a third sub-channel, can further extend the flow path of the fluid in the channel, thereby further reducing the impact on the external environment when the battery device malfunctions.

[0013] In some embodiments of the first aspect, the first partition and the second partition are spaced apart along the height of the housing, the first sub-flow channel is located at the bottom of the housing, and the third sub-flow channel is located at the top of the housing. The inlet is provided corresponding to the first sub-flow channel, and the outlet is provided corresponding to the third sub-flow channel.

[0014] The above technical solution can effectively reduce the content of impurities such as metal particles in the fluid discharged to the outside of the battery device, thereby further reducing the impact on the external environment.

[0015] In some embodiments of the first aspect, both the first and second holes are disposed close to the blocking member, the inlet is disposed corresponding to the first sub-flow channel, and the outlet is disposed corresponding to the third sub-flow channel. The inlet and the first hole are respectively located on opposite sides of the blocking member along the extension direction of the first sub-flow channel, the first hole and the second hole are respectively located on opposite sides of the blocking member along the extension direction of the second sub-flow channel, and the second hole and the outlet are respectively located on opposite sides of the blocking member along the extension direction of the third sub-flow channel.

[0016] The above technical solution, by placing both the first and second holes close to the blocking component, can further extend the flow path of the fluid in the channel, thereby further reducing the impact on the external environment when the battery device malfunctions.

[0017] In some embodiments of the first aspect, the blocking component includes a first blocking member, a second blocking member, and a third blocking member. The first blocking member is disposed within a first sub-channel and divides the first sub-channel along its extension direction. The second blocking member is disposed within a second sub-channel and divides the second sub-channel along its extension direction. The third blocking member is disposed within a third sub-channel and divides the third sub-channel along its extension direction.

[0018] The above technical solution, by setting the blocking component as a split structure including a first blocking member, a second blocking member and a third blocking member, allows for flexible adjustment of the structure or position of the first blocking member, the second blocking member and the third blocking member according to different needs, thereby improving the flexibility and applicability of the blocking component.

[0019] In some embodiments of the first aspect, the first, second, and third blocking members at least partially overlap in the stacking direction of the first, second, and third sub-flow channels. This ensures that the first, second, and third blocking members are positioned approximately the same on the housing, reducing structural complexity and facilitating maintenance.

[0020] In some embodiments of the first aspect, the first blocking member, the second blocking member, and the third blocking member are configured as a single unit.

[0021] On the one hand, the manufacturing process is simplified by eliminating the need for additional connecting processes to join the first, second, and third blocking components. On the other hand, compared to connecting the first, second, and third blocking components through additional connecting processes, the integrated structure of the first, second, and third blocking components provides a higher degree of connection strength.

[0022] In some embodiments of the first aspect, the opening area of ​​the connecting hole is 50 mm. 2 -3000mm 2 .

[0023] The above technical solution, by setting the opening area of ​​the connecting hole within the aforementioned range, enables the overall flow time of the fluid within the channel to be within a suitable range. This reduces the impact on the external environment when the battery device malfunctions, while also minimizing the risk of excessive pressure inside the frame.

[0024] In some embodiments of the first aspect, the opening area of ​​the connecting hole is 200 mm². 2 -1300mm2 This can further improve the balance between reducing the impact on the external environment when the battery device malfunctions and reducing the risk of excessive pressure inside the frame.

[0025] In some embodiments of the first aspect, the area of ​​the cross-section of the sub-channel perpendicular to the extension direction of the sub-channel is 50 mm². 2 -3000mm 2 .

[0026] The above technical solution sets the area of ​​the cross section of the sub-channel perpendicular to the extension direction of the sub-channel within the above range, so that the overall flow time of the fluid in the channel is within a suitable range. This reduces the impact on the external environment when the battery device malfunctions, while also reducing the risk of excessive pressure inside the frame.

[0027] In some embodiments of the first aspect, the area of ​​the cross-section of the sub-channel perpendicular to the extension direction of the sub-channel is 200 mm². 2 -1300mm 2 This can further improve the balance between reducing the impact on the external environment when the battery device malfunctions and reducing the risk of excessive pressure inside the frame.

[0028] In some embodiments of the first aspect, the frame includes M beams arranged along the outer periphery of the receiving space and connected end-to-end. Each beam has an internal cavity, and the cavities of the M beams are interconnected to form a channel, where M is greater than or equal to 2. A blocking member is disposed at the connection between the first beam and the Mth beam, separating the cavities of the first beam and the Mth beam at the connection point. An inlet is disposed on the first beam, and an outlet is disposed on the Mth beam.

[0029] The above technical solution, by setting up M beams to form a frame, helps to reduce the assembly difficulty of the blocking components and thus reduce production costs.

[0030] In some embodiments of the first aspect, the frame includes M beams arranged along the outer periphery of the receiving space and connected end-to-end. Each beam has an internal cavity, and the cavities of the M beams are interconnected to form a channel, where M is greater than or equal to 2. A blocking member is disposed at the connection between the first beam and the Mth beam, separating the cavities of the first beam and the Mth beam at the connection point. When the number of sub-channel layers N is even, the inlet and outlet are located on the first beam. When the number of sub-channel layers N is odd, the inlet is located on the first beam, and the outlet is located on the Mth beam.

[0031] This configuration maximizes the flow path and time of fluid within the channels, given a fixed number of sub-channel layers.

[0032] In some embodiments of the first aspect, each beam includes two opposite end faces along its own length, and M beams are connected to each other end-to-end through the end faces.

[0033] The above technical solution allows the two opposite end faces of the beam to be inclined along its own length, which can reduce the operational difficulty of directly connecting multiple beams and help improve production efficiency.

[0034] In some embodiments of the first aspect, each beam includes a beam body and N-1 first reinforcing ribs, with a cavity disposed within the beam body and the N-1 first reinforcing ribs disposed within the cavity. The first reinforcing ribs of every two adjacent beams are butt-jointed to form N-1 partition members, which divide the channel into N layers of sub-channels along a direction intersecting the channel's extension direction. At least one of the first beam and the Mth beam has a connecting hole on its first reinforcing rib. In a sub-channel with an inlet or outlet, the connecting hole is located at the end of the sub-channel furthest from the inlet or outlet.

[0035] The above technical solution connects the first reinforcing ribs of multiple beams to form a partition component, which helps to reduce the difficulty of frame fabrication and reduce production costs.

[0036] In some embodiments of the first aspect, the housing further includes a first seal that is clamped between first reinforcing ribs of two adjacent beams.

[0037] The above technical solution, by setting a first sealing element, can achieve a sealed connection between two adjacent beams without welding the first reinforcing ribs of the two beams, thereby reducing the overall manufacturing difficulty, improving production efficiency and reducing costs.

[0038] In some embodiments of the first aspect, the housing further includes a plurality of connectors, the number of which matches the number of beams. Each pair of adjacent beams is connected by a connector, the connector having an internal cavity through which the cavities of the multiple beams communicate. A blocking component is positioned at the point where the first beam and the Mth beam are connected by the connector.

[0039] The above technical solution, by introducing connectors to connect two adjacent beams, can effectively reduce the difficulty of connecting multiple beams, thereby further improving the overall production efficiency of the battery device and reducing costs.

[0040] In some embodiments of the first aspect, the beam includes a beam body and N-1 first reinforcing ribs, with a cavity disposed within the beam body and the N-1 first reinforcing ribs disposed within the cavity. The connector includes a connecting body and N-1 second reinforcing ribs, the connecting body connecting the beam bodies of two adjacent beams, the cavity being disposed within the connecting body, and the N-1 second reinforcing ribs disposed within the cavity. Each second reinforcing rib abuts against the first reinforcing ribs of two adjacent beams to form N-1 partition members, which divide the channel into N layers of sub-channels along a direction intersecting the channel's extension direction. At least one of the first reinforcing ribs of the first beam and the Mth beam has a connecting hole. In a sub-channel with an inlet or outlet, the connecting hole is located at the end of the sub-channel furthest from the inlet or outlet.

[0041] The aforementioned technical solution, by setting a second reinforcing rib to connect the first reinforcing ribs of two adjacent beams, can further reduce the connection difficulty between the first reinforcing ribs of multiple beams, thereby further improving the overall production efficiency of the battery device and reducing costs. Furthermore, in sub-channels with inlets or outlets, the connecting hole is located at the end of the sub-channel furthest from the inlet or outlet, which can further extend the flow path of the fluid within the channel, thereby further reducing the impact on the external environment when the battery device malfunctions.

[0042] In some embodiments of the first aspect, the housing further includes a second seal connected between the second reinforcing rib and the first reinforcing rib.

[0043] The above technical solution, by setting a second sealing element, can achieve a sealed connection between the second reinforcing rib and the first reinforcing rib without welding them together, thereby reducing the overall manufacturing difficulty, improving production efficiency and reducing costs.

[0044] In some embodiments of the first aspect, the battery device further includes a pressure relief mechanism connected to an outlet.

[0045] The above technical solution reduces unnecessary fluid discharge by setting a pressure relief mechanism at the outlet, so that the fluid in the channel can only be discharged to the outside of the battery device when certain conditions are met, thereby further reducing the impact on the external environment.

[0046] Secondly, this application provides an electrical device that includes a battery device provided in any embodiment of the first aspect, the battery device being used to provide electrical energy.

[0047] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0048] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0049] Figure 1 These are schematic diagrams of the vehicle structure provided in some embodiments of this application;

[0050] Figure 2 This is a three-dimensional structural schematic diagram of a battery device provided in some embodiments of this application;

[0051] Figure 3 This is a front view structural diagram of the housing of a battery device provided in some embodiments of this application;

[0052] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along AA;

[0053] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along BB;

[0054] Figure 6 This is a three-dimensional perspective structural diagram of a box provided in some embodiments of this application;

[0055] Figure 7 for Figure 6 A schematic diagram showing the flow direction of the fluid in the box;

[0056] Figure 8 This is an exploded structural diagram of a box provided in some embodiments of this application;

[0057] Figure 9 for Figure 8 The diagram shows a three-dimensional structural diagram of the beams of the box-shaped structure.

[0058] Figure 10 This is a top view of another housing structure provided in some embodiments of this application;

[0059] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure along CC;

[0060] Figure 12 This is a three-dimensional perspective structural diagram of another box provided in some embodiments of this application;

[0061] Figure 13 for Figure 12 A magnified schematic diagram of the local structure at point H;

[0062] Figure 14 for Figure 12 A schematic diagram showing the flow direction of the fluid in the box;

[0063] Figure 15 This is an exploded structural diagram of another box provided in some embodiments of this application;

[0064] Figure 16 for Figure 15 The diagram shows a three-dimensional structural diagram of the beams of the box-shaped structure.

[0065] Figure 17 This is a top view of another type of housing provided in some embodiments of this application;

[0066] Figure 18 for Figure 17 Schematic diagram of the cross-sectional structure along DD;

[0067] Figure 19 This is an exploded structural diagram of another type of box provided in some embodiments of this application;

[0068] Figure 20 This is a partial exploded view of another enclosure provided in some embodiments of this application;

[0069] Figure 21 A three-dimensional structural schematic diagram of the first seal provided in some embodiments of this application;

[0070] Figure 22 This is a partial exploded view of another enclosure provided in some embodiments of this application;

[0071] Figure 23 This is a partial exploded view of another enclosure provided in some embodiments of this application;

[0072] Figure 24 A three-dimensional structural diagram illustrating the engagement of a beam and connector in a battery device according to some embodiments of this application;

[0073] Figure 25 This is a partial exploded view of another enclosure provided in some embodiments of this application;

[0074] Figure 26 A three-dimensional structural schematic diagram of the second seal provided in some embodiments of this application;

[0075] Figure 27 This is a three-dimensional structural schematic diagram of another battery device provided in some embodiments of this application.

[0076] The reference numerals in the detailed embodiments are as follows:

[0077] 1. Vehicle; 2. Battery unit; 3. Controller; 4. Motor;

[0078] 10. Battery cell; 20. Housing; 21. Accommodation space; 22. Frame; 221. Channel; 2211. Sub-channel; 2211a. First sub-channel; 2211b. Second sub-channel; 2211c. Third sub-channel; 222. Inlet; 223. Outlet; 23. Blocking component; 23a. First blocking component; 23b. Second blocking component; 23c. Third blocking component; 24. Separating component; 24a. First separating component; 24b. Second separating component; 241. Connecting hole; 241a. First hole; 241b. Second hole; 25. Beam body; 251. Cavity; 252. First surface; 253. Second surface; 254. End face; 255. Beam body; 256. First reinforcing rib;

[0079] 30. First sealing element; 40. Connecting element; 41. Cavity; 42. Connecting body; 43. Second reinforcing rib; 50. Second sealing element; 60. Pressure relief mechanism. Detailed Implementation

[0080] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0081] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0082] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0083] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0084] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0085] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0086] In this application, "multiple" means two or more (including two).

[0087] In this application, the term "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0088] In this application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0089] The battery device mentioned in the embodiments of this application may include a single physical module containing one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar.

[0090] In some embodiments, the battery device may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0091] In some embodiments, the battery device may be a battery pack, which includes a housing and individual battery cells, with the individual battery cells or battery modules housed within the housing.

[0092] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0093] In some embodiments, the battery device may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0094] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0095] In the technological development of batteries, the impact of abnormal states such as leakage or thermal runaway on the external environment directly affects the reliability, cost of use, and user experience of end products.

[0096] When a battery malfunctions, a large amount of fluid is generated inside the battery device. For example, when a single battery cell experiences thermal runaway, a large amount of high-temperature gas is generated inside the battery device, which may also contain impurities such as metal particles. Similarly, when the electrolyte in a single battery cell leaks, a large amount of electrolyte is generated inside the battery device. If the fluid generated inside the battery device during an malfunction is directly discharged to the outside of the device in a short period of time, it can easily damage other components located around the battery device and cause significant environmental pollution.

[0097] Based on the above considerations, this application provides a battery device, which includes a battery cell and a housing. The housing includes a receiving space and a frame. The battery cell is received in the receiving space, and the frame is disposed along the outer periphery of the receiving space. A channel is formed inside the frame, surrounding the outer periphery of the receiving space. The frame also has an inlet and an outlet. The inlet connects the receiving space and the channel, and the outlet connects the channel and the outside of the housing. A blocking component is also provided within the channel, dividing the channel into a flow path connecting the inlet and the outlet, and generally surrounding the receiving space.

[0098] When a battery malfunctions, the fluid generated inside the battery device enters the channel through the inlet, flows through the channel to the outlet, and is then discharged to the outside of the battery device. The fluid can be either a gas or a liquid. The blocking component in the above-described technical solution can impede the fluid flow, providing a flow path that roughly surrounds the containment space, thereby extending the fluid's flow path and time within the channel. This allows the fluid to effectively reduce its temperature within the channel, and simultaneously, impurities such as metal particles mixed in the fluid can better settle within the channel, thus reducing the risk of damage to other components located outside the battery device after the fluid is discharged, as well as the risk of significant environmental pollution. In this way, the impact of a battery malfunction on the external environment can be effectively reduced.

[0099] The technical solutions described in the embodiments of this application are applicable to battery devices and electrical devices that use battery devices.

[0100] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, among others. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0101] It should be understood that the technical solutions described in the embodiments of this application are not limited to the battery devices and electrical equipment described above, but can also be applied to all battery devices including battery boxes and electrical equipment using battery devices. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0102] Figure 1 The diagram shows the structural features of a vehicle provided in some embodiments of this application.

[0103] Continue to refer to Figure 1 The vehicle 1 is equipped with a battery device 2, which may be located at the bottom, front, or rear of the vehicle 1. The battery device 2 can be used to power the vehicle 1; for example, the battery device 2 can serve as the operating power source for the vehicle 1.

[0104] The vehicle 1 may also include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, for the power needs of the vehicle 1 during starting, navigation and driving.

[0105] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0106] Figure 2 This is a three-dimensional structural diagram of a battery device provided in some embodiments of this application. Figure 3 This is a front view structural diagram of the housing of a battery device provided in some embodiments of this application. Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure along AA. Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure along BB. Figure 6 This is a three-dimensional perspective structural diagram of a box provided in some embodiments of this application. Figure 7 for Figure 6 The diagram shows the flow direction of the fluid in the box. Figure 8 This is an exploded structural diagram of a box provided in some embodiments of this application. Figure 9 for Figure 8 The diagram shows a three-dimensional structural diagram of the beam of the box-shaped structure.

[0107] refer to Figures 2 to 9 This application provides a battery device 2, which includes a battery cell 10 and a housing 20. The housing 20 includes a receiving space 21 and a frame 22. The battery cell 10 is received in the receiving space 21. The frame 22 is disposed along the outer periphery of the receiving space 21, and a channel 221 is formed inside the frame 22, surrounding the outer periphery of the receiving space 21. The frame 22 also has an inlet 222 and an outlet 223. The inlet 222 connects the receiving space 21 and the channel 221, and the outlet 223 connects the channel 221 and the outside of the housing 20. A blocking member 23 is also provided inside the channel 221, dividing the channel 221 into a flow path connecting the inlet 222 and the outlet 223, and substantially surrounding the receiving space 21.

[0108] In the battery device 2, the housing 20 is used to house the individual battery cells 10. The housing 20 can have various structures, such as a cylinder or a cuboid. There can be one or more individual battery cells 10. If there are multiple individual battery cells 10, they can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple individual battery cells 10 can be connected in both series and parallel connections. Multiple individual battery cells 10 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple individual battery cells 10 is housed within the housing 20. Alternatively, multiple individual battery cells 10 can first be connected in series, parallel, or in a mixed configuration to form a battery module, and then multiple battery modules can be connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the housing 20.

[0109] For example, the border 22 can be a cuboid-shaped border 22, a cylindrical border 22, or other irregular border 22, etc. Accordingly, the shape of the receiving space 21 matches the shape of the border 22. If the border 22 is a cuboid-shaped border 22, then the receiving space 21 is a cuboid; if the border 22 is a cylindrical border 22, then the receiving space 21 is a cylinder.

[0110] Optionally, the frame 22 may be, but is not limited to, made of metal or non-metal materials. For example, the metal material may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc., and the non-metal material may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0111] In the battery device 2, there can be one or more battery cells 10. If there are multiple battery cells 10, they can be connected in series, in parallel, or in a mixed manner. A mixed connection means that multiple battery cells 10 are connected in both series and parallel. Multiple battery cells 10 can be directly connected in series, in parallel, or in a mixed manner, and then the whole assembly of multiple battery cells 10 is housed in the housing 20. Alternatively, multiple battery cells 10 can first be connected in series, in parallel, or in a mixed manner to form a battery module, and then multiple battery modules can be connected in series, in parallel, or in a mixed manner to form a whole assembly, which is then housed in the housing 20.

[0112] In some examples, there are multiple battery cells 10, which are first connected in series, parallel, or mixed to form a battery module. Multiple battery modules are then connected in series, parallel, or mixed to form a whole, which is housed in the housing 20.

[0113] Multiple battery cells 10 in the battery module can be electrically connected through a busbar component to achieve parallel, series, or mixed connection of multiple battery cells 10 in the battery module.

[0114] A blocking member 23 is disposed within the channel 221 and divides the channel 221 along its extending direction. The blocking member 23 is used to block the flow of fluid within the channel 221. The inlet 222 and outlet 223 are disposed close to the blocking member 23 to provide a flow path that generally surrounds the receiving space 21 for the fluid flowing from the inlet 222 to the outlet 223. Here, the flow path refers to the route that the fluid within the channel 221 can take; in some examples, the flow path may also be referred to as a flow channel.

[0115] For example, the blocking member 23 has a first end and a second end, and a channel 221 connects the first end and the second end, allowing fluid to flow between the first end and the second end. An inlet 222 is located near the first end, and an outlet 223 is located near the second end. After entering the channel 221 from the inlet 222, the fluid flows away from the blocking member 23 due to the obstruction at the first end of the blocking member 23, generally circling the receiving space 21 before reaching the second end of the blocking member 23, and then exiting to the external environment from the outlet 223. "Generally circling" means that the flow path of the fluid within the channel 221 can be approximately circling the receiving space 21 once, or it can circling the receiving space 21 multiple times in a manner similar to multiple overlapping rings, or it can circling the receiving space 21 multiple times in a manner similar to a spiral.

[0116] In some examples, channel 221 is a single-layer structure surrounding the periphery of receiving space 21. After the fluid enters the channel 221 from the inlet 222, the fluid flows away from the blocking member 23 at the first end of the blocking member 23, roughly around the receiving space 21, and then reaches the second end of the blocking member 23, and is then output to the external environment from the outlet 223.

[0117] In some examples, channel 221 is a multi-layered structure surrounding the periphery of receiving space 21. This can be, but is not limited to, a two-layer, three-layer, or four-layer structure. The following description uses a two-layered structure surrounding the periphery of receiving space 21 as an example. Channel 221 includes a first sub-channel 2211a and a second sub-channel 2211b stacked along a direction intersecting the extension direction of channel 221. Both the first sub-channel 2211a and the second sub-channel 2211b surround the periphery of receiving space 21. The first sub-channel 2211a and the second sub-channel 2211b are connected by a connecting hole 241, which is located near the blocking member 23. The inlet 222 corresponds to the first sub-channel 2211a, and the outlet 223 corresponds to the second sub-channel 2211b. After the fluid enters the first sub-channel 2211a from the inlet 222, it flows away from the blocking member 23 in the first sub-channel 2211a. The fluid flows around the circumference of the receiving space 21 in the first sub-channel 2211a and reaches the blocking member 23 after roughly circling the receiving space 21. Then it enters the second sub-channel 2211b from the connecting hole 241. The fluid flows away from the blocking member 23 in the second sub-channel 2211b. The fluid flows around the circumference of the receiving space 21 in the second sub-channel 2211b and reaches the second end of the blocking member 23 again after roughly circling the receiving space 21. Then it is discharged to the external environment from the outlet 223.

[0118] The blocking component 23 can be detachably connected to the inner wall of the frame 22, or it can be integrally formed on the inner wall of the frame 22. The blocking component 23 can be directly connected to the inner wall of the frame 22, or it can be constrained to the inner wall of the frame 22 by other components. As an example, the connection method between the blocking component 23 and the inner wall of the frame 22 can be, but is not limited to, bolt connection, welding, riveting, snap-fit, or adhesive.

[0119] Optionally, the blocking component 23 may be, but is not limited to, a plate-like structure, a block-like structure, a column-like structure, or a membrane-like structure.

[0120] Optionally, the blocking component 23 may be, but is not limited to, made of metallic or non-metallic materials. For example, metallic materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc., while non-metallic materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0121] In some examples, the blocking component 23 and the frame 22 are made of the same material, which simplifies the manufacturing process and helps reduce costs.

[0122] Optionally, the shape of the inlet 222 can be, but is not limited to, a circle, a rectangle, an ellipse, a triangle, or a trapezoid, and the shape of the outlet 223 can be, but is not limited to, a circle, a rectangle, an ellipse, a triangle, or a trapezoid, depending on the actual application environment.

[0123] Optionally, the quantity of import 222 can be one or more, and the quantity of export 223 can be one or more, which can be selected according to the actual application environment.

[0124] When a malfunction occurs in battery device 2, the fluid generated inside battery device 2 can enter channel 221 through inlet 222, flow within channel 221 to outlet 223, and then be discharged to the outside of battery device 2 through outlet 223. The fluid can be either gas or liquid.

[0125] In some examples, when the battery cell 10 in the battery device 2 experiences thermal runaway, a large amount of high-temperature gas will be present in the containment space 21 of the battery device 2. At the same time, the high-temperature gas will also contain some impurities such as metal particles.

[0126] In some examples, when electrolyte leakage occurs in the battery cell 10 of the battery device 2, a large amount of electrolyte will be present in the containment space 21 of the battery device 2, and some impurities such as metal particles will also be mixed in the electrolyte.

[0127] It should be noted that when the battery cell 10 in the battery device 2 experiences thermal runaway, it can easily lead to electrolyte leakage while generating a large amount of high-temperature gas.

[0128] The blocking component 23 in the above-described technical solution can block the flow of fluid, providing a flow path that roughly surrounds the receiving space 21 for the fluid flowing from the inlet 222 to the outlet 223, thereby extending the flow path and time of the fluid within the channel 221. This allows the fluid to effectively reduce its temperature within the channel 221, and simultaneously, impurities such as metal particles mixed in the fluid can better settle within the channel 221, thus reducing the risk of damage to other components located outside the battery device 2 after the fluid is discharged outside, as well as the risk of significant environmental pollution. In this way, the impact on the external environment when the battery device 2 malfunctions can be effectively reduced.

[0129] Figure 10 This is a top view of another housing 20 provided in some embodiments of this application. Figure 11 for Figure 10 A schematic diagram of the cross-sectional structure along CC. Figure 12 This is a three-dimensional perspective structural diagram of another box 20 provided in some embodiments of this application. Figure 13 for Figure 12 A magnified schematic diagram of the local structure at point H. Figure 14 for Figure 12 The diagram shows the flow direction of the fluid in the box 20. Figure 15 This is an exploded structural diagram of another housing 20 provided in some embodiments of this application. Figure 16 for Figure 15 The diagram shows a three-dimensional structural representation of the beam 25 of the box 20. Figure 17 This application provides a top view of another embodiment of the housing 20. Figure 18 for Figure 17 A schematic diagram of the cross-sectional structure along DD.

[0130] Continue to refer to Figures 10 to 18 In some embodiments, the housing 20 further includes a partition 24 disposed within the channel 221, dividing the channel 221 into N sub-channels 2211 along a direction intersecting the extension direction of the channel 221. Inlet 222 and outlet 223 are respectively provided for different sub-channels 2211, and N is greater than or equal to 2. The partition 24 has a connecting hole 241, through which adjacent sub-channels 2211 are connected.

[0131] The partition member 24 can divide the channel 221 into N sub-channels 2211 along the direction intersecting the extension direction of the channel 221, where N can be, but is not limited to, 2, 3, 4, 5, or 6. The housing 20 can include N-1 partition members 24, which are spaced apart along the direction intersecting the extension direction of the channel 221 to divide the channel 221 into N sub-channels 2211.

[0132] The following explanation uses the example of how the separating component 24 can divide the channel 221 into two sub-channels 2211 along the direction intersecting the extension direction of the channel 221.

[0133] For example, the separating member 24 divides the channel 221 into a first sub-channel 2211a and a second sub-channel 2211b stacked in a direction intersecting the extension direction of the channel 221. Both the first sub-channel 2211a and the second sub-channel 2211b surround the outer periphery of the receiving space 21 and are connected by a connecting hole 241. After the fluid enters the first sub-channel 2211a from the inlet 222, the fluid flows away from the blocking member 23 in the first sub-channel 2211a. After the fluid flows circumferentially in the first sub-channel 2211a to the location of the first hole 241a, it enters the second sub-channel 2211b through the connecting hole 241. The fluid flows circumferentially in the second sub-channel 2211b to the blocking member 23 and then exits to the external environment from the outlet 223.

[0134] The partition component 24 can be detachably connected to the inner wall of the frame 22, or it can be integrally formed on the inner wall of the frame 22. The partition component 24 can be directly connected to the inner wall of the frame 22, or it can be constrained to the inner wall of the frame 22 by other components. As an example, the connection method between the partition component 24 and the inner wall of the frame 22 can be, but is not limited to, bolt connection, welding, riveting, snap-fit, or adhesive.

[0135] Optionally, the separating component 24 may be, but is not limited to, a plate-like structure, a block-like structure, a column-like structure, or a membrane-like structure.

[0136] Optionally, the separator 24 may be, but is not limited to, made of metallic or non-metallic materials. For example, metallic materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, while non-metallic materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide.

[0137] In some examples, the separator 24 and the frame 22 are made of the same material, which simplifies the manufacturing process and helps reduce costs.

[0138] Optionally, the shape of the connecting hole 241 can be, but is not limited to, a circle, rectangle, ellipse, triangle or trapezoid, etc., and can be selected according to the actual application environment.

[0139] Optionally, the number of connecting holes 241 can be one or more, depending on the actual application environment.

[0140] The above technical solution, by setting the separator 24, can further extend the flow path and time of the fluid in the channel 221, thereby further reducing the impact on the external environment when the battery device 2 malfunctions.

[0141] In some embodiments, the partition member 24 divides the channel 221 into N layers of sub-channels 2211 along a direction perpendicular to the extension direction of the channel 221.

[0142] In some embodiments, the cross-sectional shape of the sub-channel 2211 in the direction perpendicular to the extension of the channel 221 can be, but is not limited to, a rectangle, a square, a parallelogram, a triangle, or a circle.

[0143] In some embodiments, the flow path approximately surrounds the accommodating space 21 N times.

[0144] In other words, the connecting hole 241 is located close to the blocking member 23. Taking the example that the aforementioned separating member 24 can divide the channel 221 into two sub-channels 2211 along the direction intersecting the extension direction of the channel 221, we will explain the process.

[0145] For example, the partition member 24 divides the channel 221 into a first sub-channel 2211a and a second sub-channel 2211b stacked in a direction intersecting the extension direction of the channel 221. The first sub-channel 2211a and the second sub-channel 2211b both surround the outer periphery of the receiving space 21 and are connected to each other through a connecting hole 241. After the fluid enters the first sub-channel 2211a from the inlet 222, it flows away from the blocking member 23 in the first sub-channel 2211a. The fluid flows around the circumference of the receiving space 21 in the first sub-channel 2211a and reaches the blocking member 23 after roughly circling the receiving space 21. Then it enters the second sub-channel 2211b from the connecting hole 241. The fluid flows away from the blocking member 23 in the second sub-channel 2211b. The fluid flows around the circumference of the receiving space 21 in the second sub-channel 2211b and reaches the blocking member 23 again after roughly circling the receiving space 21. Then it is discharged to the external environment from the outlet 223.

[0146] Thus, the above technical solution can further extend the flow path and time of the fluid in the channel 221, thereby further reducing the impact on the external environment when the battery device 2 malfunctions.

[0147] In some embodiments, the partition member 24 includes a first partition 24a and a second partition 24b. The first partition 24a and the second partition 24b are spaced apart along a direction intersecting the extension direction of the channel 221, dividing the channel 221 into a first sub-channel 2211a, a second sub-channel 2211b, and a third sub-channel 2211c stacked along a direction intersecting the extension direction of the channel 221. The second sub-channel 2211b is located between the first sub-channel 2211a and the third sub-channel 2211c. The connecting hole 241 includes a first hole 241a and a second hole 241b. The first hole 241a is disposed on the first partition 24a, and the first sub-channel 2211a and the second sub-channel 2211b are connected through the first hole 241a. The second hole 241b is disposed on the second partition 24b, and the second sub-channel 2211b and the third sub-channel 2211c are connected through the second hole 241b. The inlet 222 is set to correspond to one of the first sub-flow channel 2211a and the third sub-flow channel 2211c, and the outlet 223 is set to correspond to the other of the first sub-flow channel 2211a and the third sub-flow channel 2211c.

[0148] The inlet 222 is configured to correspond to one of the first sub-flow channels 2211a and the third sub-flow channel 2211c. This can be understood as the inlet 222 being directly connected to one of the first sub-flow channels 2211a and the third sub-flow channel 2211c; that is, the inlet 222 is located on the border 22 surrounding one of the first sub-flow channels 2211a and the third sub-flow channel 2211c. The outlet 223 is configured to correspond to the other of the first sub-flow channels 2211a and the third sub-flow channel 2211c. This can be understood as the outlet 223 being directly connected to the other of the first sub-flow channels 2211a and the third sub-flow channel 2211c; that is, the outlet 223 is located on the border 22 surrounding the other of the first sub-flow channels 2211a and the third sub-flow channel 2211c.

[0149] In some examples, inlet 222 corresponds to the first sub-channel 2211a and outlet 223 corresponds to the third sub-channel 2211c.

[0150] In some examples, inlet 222 corresponds to the third sub-channel 2211c and outlet 223 corresponds to the third sub-channel 2211.

[0151] For example, the inlet 222 is set to correspond to the first sub-channel 2211a and the outlet 223 is set to correspond to the third sub-channel 2211c. The first sub-channel 2211a, the second sub-channel 2211b and the third sub-channel 2211c all surround the outer periphery of the receiving space 21. After the fluid enters the first sub-channel 2211a from the inlet 222, it flows away from the blocking member 23 within the first sub-channel 2211a. After flowing circumferentially along the receiving space 21 within the first sub-channel 2211a to the location of the first hole 241a, the fluid enters the second sub-channel 2211b through the first hole 241a. After flowing circumferentially along the receiving space 21 within the second sub-channel 2211b to the location of the second hole 241b, the fluid enters the third sub-channel 2211c through the second hole 241b. After flowing circumferentially along the receiving space 21 within the third sub-channel 2211c to the blocking member 23, the fluid is then output to the external environment from the outlet 223.

[0152] Optionally, the first partition 24a and the second partition 24b may have the same structural shape or different structural shapes. The first partition 24a and the second partition 24b may be made of the same material or different materials.

[0153] Optionally, the first hole 241a and the second hole 241b may have the same shape or different shapes.

[0154] The above technical solution, by setting the channel 221 as a three-layer structure including the first sub-channel 2211a, the second sub-channel 2211b and the third sub-channel 2211c, can further extend the flow path of the fluid in the channel 221, thereby further reducing the impact on the external environment when the battery device 2 malfunctions.

[0155] In some embodiments, the first partition 24a and the second partition 24b are spaced apart along the height of the housing 20, the first sub-channel 2211a is located at the bottom of the housing 20, and the third sub-channel 2211c is located at the top of the housing 20. The inlet 222 is provided corresponding to the first sub-channel 2211a, and the outlet 223 is provided corresponding to the third sub-channel 2211c.

[0156] When fluid flows from the first sub-channel 2211a into the second sub-channel 2211b, since the second sub-channel 2211b is located at the top of the first sub-channel 2211a, some impurities such as metal particles in the fluid will fall into the first sub-channel 2211a under the influence of gravity, thus reducing the content of such impurities in the fluid entering the second sub-channel 2211b. When fluid flows from the second sub-channel 2211b into the third sub-channel 2211c, since the third sub-channel 2211c is located at the top of the second sub-channel 2211b, some impurities such as metal particles in the fluid will further fall into the second sub-channel 2211b under the influence of gravity, thus reducing the content of such impurities in the fluid entering the third sub-channel 2211c.

[0157] Thus, the above technical solution can effectively reduce the content of impurities such as metal particles in the fluid discharged to the outside of the battery device 2, thereby further reducing the impact on the external environment.

[0158] In some embodiments, the first hole 241a and the second hole 241b are both disposed close to the blocking member 23, the inlet 222 is disposed corresponding to the first sub-channel 2211a, and the outlet 223 is disposed corresponding to the third sub-channel 2211c. The inlet 222 and the first hole 241a are respectively located on opposite sides of the blocking member 23 along the extension direction of the first sub-channel 2211a, the first hole 241a and the second hole 241b are respectively located on opposite sides of the blocking member 23 along the extension direction of the second sub-channel 2211b, and the second hole 241b and the outlet 223 are respectively located on opposite sides of the blocking member 23 along the extension direction of the third sub-channel 2211c.

[0159] For example, after the fluid enters the first sub-channel 2211a from the inlet 222, the fluid flows away from the blocking member 23 within the first sub-channel 2211a. The fluid flows circumferentially around the receiving space 21 within the first sub-channel 2211a and approximately circumferentially around the receiving space 21 before reaching the blocking member 23, and then enters the second sub-channel 2211b from the first hole 241a. The fluid then flows away from the blocking member 23 within the second sub-channel 2211b. The fluid flows circumferentially around the receiving space 21 within the second sub-channel 2211b and reaches the blocking component 23 after roughly circling the receiving space 21 for the second time. Then, it enters the third sub-channel 2211c through the second hole 241b. The fluid flows away from the blocking component 23 within the third sub-channel 2211c. The fluid flows circumferentially around the receiving space 21 within the third sub-channel 2211c and reaches the blocking component 23 after roughly circling the receiving space 21 for the third time. Then, it is discharged to the external environment from the outlet 223.

[0160] The above technical solution, by placing both the first hole 241a and the second hole 241b close to the blocking component 23, can further extend the flow path of the fluid in the channel 221, thereby further reducing the impact on the external environment when the battery device 2 malfunctions.

[0161] Figure 19 This is an exploded structural diagram of another box 20 provided in some embodiments of this application.

[0162] Continue to refer to Figure 19 In some embodiments, the blocking member 23 includes a first blocking member 23a, a second blocking member 23b, and a third blocking member 23c. The first blocking member 23a is disposed within the first sub-channel 2211a and divides the first sub-channel 2211a along its extending direction. The second blocking member 23b is disposed within the second sub-channel 2211b and divides the second sub-channel 2211b along its extending direction. The third blocking member 23c is disposed within the third sub-channel 2211c and divides the third sub-channel 2211c along its extending direction.

[0163] For example, after the fluid enters the first sub-channel 2211a from the inlet 222, the fluid flows in the first sub-channel 2211a away from the first barrier 23a due to the obstruction on one side of the first barrier 23a. The fluid flows circumferentially around the receiving space 21 in the first sub-channel 2211a and reaches the other side of the first barrier 23a after approximately circumferentially surrounding the receiving space 21. Then, it enters the second sub-channel 2211b from the first hole 241a. The fluid flows in the second sub-channel 2211b away from the second barrier 23b due to the obstruction on one side of the second barrier 23b. The fluid flows circumferentially around the receiving space 21 within the second sub-channel 2211b and, after a second approximate circumference around the receiving space 21, reaches the other side of the second barrier 23b. It then enters the third sub-channel 2211c through the second hole 241b. Blocked on one side of the third barrier 23c, the fluid flows in the third sub-channel 2211c in a direction away from the third barrier 23c. The fluid flows circumferentially around the receiving space 21 within the third sub-channel 2211c and, after a third approximate circumference around the receiving space 21, reaches the other side of the third barrier 23c. It then exits to the external environment from the outlet 223.

[0164] Optionally, the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c may have the same structural shape or different structural shapes. The first blocking member 23a, the second blocking member 23b, and the third blocking member 23c may be made of the same material or different materials.

[0165] The above technical solution sets the blocking component 23 into a split structure including a first blocking member 23a, a second blocking member 23b, and a third blocking member 23c. This allows for flexible adjustment of the structure or position of the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c according to different needs, thereby improving the flexibility and applicability of the blocking component 23.

[0166] In some embodiments, in the stacking direction of the first sub-channel 2211a, the second sub-channel 2211b, and the third sub-channel 2211c, the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c at least partially overlap. This ensures that the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c are positioned approximately the same on the housing 20, reducing structural complexity and facilitating maintenance.

[0167] In some embodiments, the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c are configured as a single unit.

[0168] On the one hand, the manufacturing process is simplified because there is no need to connect the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c through an additional connecting process. On the other hand, compared with connecting the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c through an additional connecting process, the first blocking member 23a, the second blocking member 23b, and the third blocking member 23c, which have an integrated structure, have a higher connection strength.

[0169] In some embodiments, the opening area of ​​the connecting hole 241 is 50 mm. 2 -3000mm 2 .

[0170] As an example, the opening area of ​​the connecting hole 241 can be, but is not limited to, 50 mm. 2 100mm 2 200mm 2 300mm 2 400mm 2 500mm 2 600mm 2 700mm 2 800mm 2 900mm 2 1000mm 2 1500mm 2 2000mm 2 2500mm 2 3000mm 2 wait.

[0171] The larger the opening area of ​​the connecting hole 241, the faster the fluid flows from one layer of the multi-layer sub-channels 2211 to another, the shorter the fluid flow time within the channel 221, and the worse the fluid improvement effect. Simultaneously, the risk of fluid accumulating within the channel 221 and causing excessive pressure within the frame 22 is lower. Conversely, the smaller the opening area of ​​the connecting hole 241, the slower the fluid flows from one layer of the multi-layer sub-channels 2211 to another, the longer the fluid flow time within the channel 221, and the better the fluid improvement effect. However, the risk of fluid accumulating within the channel 221 and causing excessive pressure within the frame 22 is also greater.

[0172] Thus, by setting the opening area of ​​the connecting hole 241 within the aforementioned range, the above-mentioned technical solution can ensure that the overall flow time of the fluid in the channel 221 is within a suitable range. This can reduce the impact on the external environment when the battery device 2 malfunctions, while also minimizing the risk of excessive pressure inside the frame 22.

[0173] In some embodiments, the opening area of ​​the connecting hole 241 is 200 mm². 2 -1300mm 2 This approach can further improve the balance between reducing the impact on the external environment when the battery device 2 malfunctions and reducing the risk of excessive pressure inside the frame 22.

[0174] As an example, the opening area of ​​the connecting hole 241 can be, but is not limited to, 200 mm². 2 250mm 2 300mm 2 350mm 2 400mm 2 450mm 2 500mm 2 550mm 2 600mm 2 650mm 2 700mm 2 750mm 2 800mm 2 850mm 2 900mm 2 950mm 2 1000mm 2 1100mm 2 1200mm 2 1300mm 2 wait.

[0175] In some embodiments, the area of ​​the cross-section of the sub-channel 2211 perpendicular to its extending direction is 50 mm². 2 -3000mm 2 .

[0176] As an example, the area of ​​the cross-section of the sub-channel 2211 perpendicular to its extension direction can be, but is not limited to, 50 mm². 2 100mm 2 200mm 2 300mm 2 400mm 2 500mm 2 600mm 2 700mm 2 800mm 2 900mm 2 1000mm 2 1500mm 2 2000mm 2 2500mm 23000mm 2 wait.

[0177] The larger the cross-sectional area of ​​the sub-channel 2211 perpendicular to its extension direction, the faster the fluid flows from one layer of the multi-layer sub-channel 2211 to another, the shorter the fluid flow time within the channel 221, and the worse the fluid improvement effect. Simultaneously, the risk of fluid accumulating within the channel 221 and causing excessive pressure within the frame 22 is lower. Conversely, the smaller the cross-sectional area of ​​the sub-channel 2211 perpendicular to its extension direction, the slower the fluid flows from one layer of the multi-layer sub-channel 2211 to another, the longer the fluid flow time within the channel 221, and the better the fluid improvement effect. However, the risk of fluid accumulating within the channel 221 and causing excessive pressure within the frame 22 is also greater.

[0178] Thus, by setting the area of ​​the cross-section of the sub-channel 2211 perpendicular to the extension direction of the sub-channel 2211 within the above-mentioned range, the above-mentioned technical solution can keep the overall flow time of the fluid in the channel 221 within a suitable range, thereby reducing the impact on the external environment when the battery device 2 malfunctions, while also reducing the risk of excessive pressure inside the frame 22.

[0179] In some embodiments, the area of ​​the cross-section of the sub-channel 2211 perpendicular to its extending direction is 200 mm². 2 -1300mm 2 This approach can further improve the balance between reducing the impact on the external environment when the battery device 2 malfunctions and reducing the risk of excessive pressure inside the frame 22.

[0180] As an example, the area of ​​the cross-section of the sub-channel 2211 perpendicular to its extension direction can be, but is not limited to, 200 mm². 2 250mm 2 300mm 2 350mm 2 400mm 2 450mm 2 500mm 2 550mm 2 600mm 2 650mm 2 700mm 2 750mm 2 800mm 2 850mm 2 900mm 2950mm 2 1000mm 2 1100mm 2 1200mm 2 1300mm 2 wait.

[0181] Continue to combine Figures 8 to 9 In some embodiments, the frame 22 includes M beams 25, which are arranged along the outer periphery of the receiving space 21 and connected end to end. Each beam 25 has a cavity 251 inside, and the cavities 251 of the M beams 25 are interconnected to form a channel 221, where M is greater than or equal to 2. A blocking member 23 is disposed at the connection between the first beam 25 and the Mth beam 25, separating the cavities 251 of the first beam 25 and the Mth beam 25 at the connection point. An inlet 222 is disposed on the first beam 25, and an outlet 223 is disposed on the Mth beam 25.

[0182] For example, M beams 25 are arranged along the outer periphery of the receiving space 21 and connected end to end. This can be understood as the M beams 25 being arranged sequentially along the outer periphery of the receiving space 21 in a unidirectional direction. The unidirectional direction can be either clockwise or counterclockwise.

[0183] The M beams 25 can be directly connected or indirectly connected through other components. As an example, the connection methods between the M beams 25 can be, but are not limited to, bolting, welding, riveting, snap-fitting, or bonding. M can be, but is not limited to, 2, 3, 4, 5, or 6.

[0184] Optionally, the M beams 25 may have the same structural shape or different structural shapes. The M beams 25 may be made of the same material or different materials.

[0185] In some examples, the M beams 25 are made of the same material, which simplifies the manufacturing process and helps reduce costs.

[0186] In some examples, the border 22 includes four beams 25 arranged along the outer periphery of the receiving space 21 to form a rectangular border 22.

[0187] The first beam 25 and the Mth beam 25 are adjacent to each other, and the blocking member 23 is disposed at the connection between the first beam 25 and the Mth beam 25. In other words, the blocking member 23 is connected between the first beam 25 and the Mth beam 25. The blocking member 23 can be directly connected between the first beam 25 and the Mth beam 25, or the blocking member 23 can be restricted between the first beam 25 and the Mth beam 25 by other components.

[0188] The above technical solution, by setting M beams 25 to form the frame 22, helps to reduce the assembly difficulty of the blocking component 23 and thus reduce production costs.

[0189] In some embodiments, the frame 22 includes M beams 25, which are arranged along the outer periphery of the receiving space 21 and connected end to end. Each beam 25 has a cavity 251 inside, and the cavities 251 of the M beams 25 are interconnected to form a channel 221, where M is greater than or equal to 2. A blocking member 23 is disposed at the connection between the first beam 25 and the Mth beam 25, separating the cavities 251 of the first beam 25 and the Mth beam 25 at the connection. When the number of layers N of the sub-channels 2211 is even, the inlet 222 and the outlet 223 are disposed on the first beam 25. When the number of layers N of the sub-channels 2211 is odd, the inlet 222 is disposed on the first beam 25, and the outlet 223 is disposed on the Mth beam 25.

[0190] This configuration maximizes the flow path and time of fluid within channel 221, given a fixed number of sub-channels 2211.

[0191] In some embodiments, each beam 25 includes two opposite end faces 254 along its own length, and M beams 25 are connected to each other end to end through the end faces 254.

[0192] For example, the cavity 251 extends along the length of the beam 25, and the two end faces 254 of the beam 25 refer to the end faces 254 on the beam 25 that have the opening of the cavity 251.

[0193] The M beams 25 in the above technical solution are directly connected through end faces 254, which not only improves assembly efficiency but also helps to reduce the overall structural complexity of the battery device 2.

[0194] In some embodiments, the beam 25 includes a first surface 252 and a second surface 253 that are opposite to each other along its thickness direction, and each end face 254 connects the first surface 252 and the second surface 253. The dimension of the first surface 252 in the length direction is smaller than the dimension of the second surface 253 in the length direction.

[0195] For example, the first surface 252 is the side surface of the beam 25 facing the receiving space 21, and the second surface 253 is the side surface of the beam 25 facing away from the receiving space 21.

[0196] The above technical solution enables the two opposite end faces 254 of the beam 25 to be set at an inclination along its own length direction, which can reduce the operational difficulty of directly connecting multiple beams 25 and help improve production efficiency.

[0197] Continue to combine Figures 15 to 16 In some embodiments, each beam 25 includes a beam body 255 and N-1 first reinforcing ribs 256. A cavity 251 is disposed in the beam body 255, and the N-1 first reinforcing ribs 256 are disposed within the cavity 251. The first reinforcing ribs 256 of every two adjacent beams 25 are abutted together to form N-1 partition members 24, which divide the channel 221 into N layers of sub-channels 2211 along a direction intersecting the extension direction of the channel 221. At least one of the first reinforcing ribs 256 of the first beam 25 and the Mth beam 25 has a connecting hole 241. In the sub-channel 2211 provided with an inlet 222 or an outlet 223, the connecting hole 241 is located at the end of the sub-channel 2211 away from the inlet 222 or the outlet 223.

[0198] For example, the first reinforcing ribs 256 of the multiple beams 25 are connected in a butt joint manner, meaning that after the first reinforcing ribs 256 of the multiple beams 25 are connected, there is no gap between the first reinforcing ribs 256 of two adjacent beams 25, so that the sub-channels 2211 in the N-layer sub-channels 2211 will not be connected at the joint of the multiple first reinforcing ribs 256.

[0199] The first reinforcing rib 256 can be detachably connected to the inner wall of the beam body 255, or it can be integrally formed on the inner wall of the beam body 255. The first reinforcing rib 256 can be directly connected to the inner wall of the beam body 255, or it can be constrained to the inner wall of the beam body 255 by other components. As an example, the connection method between the first reinforcing rib 256 and the inner wall of the beam body 255 can be, but is not limited to, bolt connection, welding, riveting, snap-fitting, or bonding.

[0200] Optionally, the first reinforcing rib 256 may be, but is not limited to, a plate-like structure, a block-like structure, a column-like structure, or a membrane-like structure.

[0201] Optionally, the first reinforcing rib 256 may be, but is not limited to, made of metallic or non-metallic materials. For example, metallic materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc., while non-metallic materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0202] In some examples, the beam body 255 and the first reinforcing rib 256 are integrally formed. On the one hand, this eliminates the need for additional connection processes to link the beam body 255 and the first reinforcing rib 256, simplifying the manufacturing process. On the other hand, compared to connecting the beam body 255 and the first reinforcing rib 256 through additional connection processes, the integral structure of the beam body 255 and the first reinforcing rib 256 provides a higher degree of connection strength.

[0203] Optionally, the number of first reinforcing ribs 256 in each beam body 25 can be one, two or more, and the number of first reinforcing ribs 256 in each beam body 25 of multiple beams is the same.

[0204] A connecting hole 241 is provided on the first reinforcing rib 256 of at least one of the first beam 25 and the Mth beam 25. This can be understood as the connecting hole 241 being provided on the first reinforcing rib 256 of one of the first beam 25 and the Mth beam 25, and the connecting hole 241 being provided on the first reinforcing rib 256 of both the first beam 25 and the Mth beam 25.

[0205] The above technical solution connects the first reinforcing ribs 256 of multiple beams 25 to form a partition component 24, which helps to reduce the difficulty of manufacturing the frame 22 and reduce production costs.

[0206] Figure 20 This is a partial exploded view of another housing 20 provided in some embodiments of this application. Figure 21 This is a three-dimensional structural diagram of the first sealing element 30 provided in some embodiments of this application.

[0207] Continue to refer to Figures 20 to 21 In some embodiments, the housing 20 further includes a first seal 30, which is clamped between the first reinforcing ribs 256 of two adjacent beams 25.

[0208] For example, during the connection of M beams 25, the first sealing member 30 is first connected to at least part of the first reinforcing rib 256, and then the beam bodies 255 of the multiple beams 25 are connected, so that the first sealing member 30 is clamped between the first reinforcing ribs 256 of two adjacent beams 25 to seal the gap between the first reinforcing ribs 256 of two adjacent beams 25.

[0209] The first sealing element 30 can be directly connected between the first reinforcing ribs 256 of two adjacent beams 25, or it can be restricted between the first reinforcing ribs 256 of two adjacent beams 25 by other components.

[0210] The number of first seals 30 matches the number of first reinforcing ribs 256. As an example, there are four beams 25, each including one first reinforcing rib 256, and four first seals 30. As another example, there are four beams 25, each including two first reinforcing ribs 256, and eight first seals 30.

[0211] Optionally, the first sealing element 30 may be, but is not limited to, a gasket, sealant, or sealing ring, and can be selected according to the actual application environment.

[0212] Optionally, the first seal 30 may be, but is not limited to, made of materials such as silicone rubber, fluororubber, polytetrafluoroethylene, epoxy resin, or polyurethane.

[0213] The above technical solution, by setting the first sealing element 30, can achieve a sealed connection between the two adjacent beams 25 without welding the first reinforcing ribs 256, thereby reducing the overall manufacturing difficulty, improving production efficiency and reducing costs.

[0214] In some embodiments, the first seal 30 includes a first positioning groove, and the first reinforcing rib 256 is snapped into the first positioning groove.

[0215] Figure 22 This is a partial exploded structural diagram of another housing 20 provided for some embodiments of this application.

[0216] Continue to refer to Figure 22 In some embodiments, the housing 20 further includes a plurality of connectors 40, the number of which matches the number of beams 25. Each pair of adjacent beams 25 is connected by a connector 40, and the connector 40 has an internal cavity 41 through which the cavities 251 of the plurality of beams 25 communicate. A blocking member 23 is disposed at the position where the first beam 25 and the Mth beam 25 are connected by the connector 40.

[0217] For example, the connector 40 can be directly connected to the beam 25, or it can be constrained to the beam 25 by other components. As an example, the connection method between the connector 40 and the beam 25 can be, but is not limited to, bolting, welding, riveting, snap-fitting, or bonding.

[0218] The number of connectors 40 matches the number of beams 25. For example, there are four beams 25 and four connectors 40.

[0219] In some examples, the connector 40 includes a first part and a second part connected together. The first part connects one of two adjacent beams 25, and the second part connects the other of two adjacent beams 25. The first part and the second part form an included angle, which can be an acute angle, a right angle, or an obtuse angle.

[0220] In some examples, the angle between the first part and the second part is a right angle.

[0221] Optionally, the connector 40 may be, but is not limited to, made of metallic or non-metallic materials. For example, metallic materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, while non-metallic materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0222] In some examples, the connector 40 and the beam 25 can be made of the same material, which helps to simplify the manufacturing process and reduce production costs.

[0223] The blocking component 23 is located at the point where the first beam 25 and the Mth beam 25 are connected by the connector 40. This can be understood as the blocking component 23 being located between the first beam 25 and the connector 40, or between the Mth beam 25 and the connector 40, or within the cavity 41 of the connector 40.

[0224] The above technical solution, by introducing a connector 40 to connect two adjacent beams 25, can effectively reduce the difficulty of connecting multiple beams 25, thereby further improving the overall production efficiency of the battery device 2 and reducing costs.

[0225] Figure 23 This is a partial exploded view of another housing 20 provided in some embodiments of this application. Figure 24 This is a three-dimensional structural diagram of the beam 25 and the connector 40 of a battery device 2 provided in some embodiments of this application.

[0226] Continue to refer to Figures 23 to 24In some embodiments, the beam 25 includes a beam body 255 and N-1 first reinforcing ribs 256. A cavity 251 is disposed in the beam body 255, and the N-1 first reinforcing ribs 256 are disposed within the cavity 251. The connector 40 includes a connecting body 42 and N-1 second reinforcing ribs 43. The connecting body 42 connects the beam bodies 255 of two adjacent beams 25. A cavity 41 is disposed in the connecting body 42, and the N-1 second reinforcing ribs 43 are disposed within the cavity 41. Each second reinforcing rib 43 abuts against the first reinforcing ribs 256 of two adjacent beams 25 to form N-1 partition members 24. The N-1 partition members 24 divide the channel 221 into N layers of sub-channels 2211 along a direction intersecting the extension direction of the channel 221. At least one of the first reinforcing ribs 256 of the first beam 25 and the Mth beam 25 has a connecting hole 241. In a sub-channel 2211 with an inlet 222 or an outlet 223, a connecting hole 241 is located at the end of the sub-channel 2211 away from the inlet 222 or the outlet 223.

[0227] For example, the second reinforcing rib 43 being connected to the first reinforcing rib 256 of two adjacent beams 25 means that after the second reinforcing rib 43 is connected to the first reinforcing rib 256 of the two adjacent beams 25, there is no gap between the second reinforcing rib 43 and the first reinforcing rib 256, so that the sub-channels 2211 in the N-layer sub-channels 2211 will not be connected at the connection between the second reinforcing rib 43 and the first reinforcing rib 256.

[0228] The second reinforcing rib 43 can be detachably connected to the inner wall of the connecting body 42, or it can be integrally formed on the inner wall of the connecting body 42. The second reinforcing rib 43 can be directly connected to the inner wall of the connecting body 42, or it can be constrained to the inner wall of the connecting body 42 by other components. As an example, the connection method between the second reinforcing rib 43 and the inner wall of the connecting body 42 can be, but is not limited to, bolt connection, welding, riveting, snap-fitting, or bonding.

[0229] Optionally, the second reinforcing rib 43 may be, but is not limited to, a plate-like structure, a block-like structure, a column-like structure, or a membrane-like structure.

[0230] Optionally, the second reinforcing rib 43 may be, but is not limited to, made of metallic or non-metallic materials. For example, metallic materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc., while non-metallic materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0231] In some examples, the connecting body 42 and the second reinforcing rib 43 are integrally formed. On the one hand, there is no need to connect the connecting body 42 and the second reinforcing rib 43 through an additional connecting process, simplifying the manufacturing process. On the other hand, compared to connecting the connecting body 42 and the second reinforcing rib 43 through an additional connecting process, the integral structure of the connecting body 42 and the second reinforcing rib 43 provides a higher degree of connection strength.

[0232] Optionally, the number of second reinforcing ribs 43 in each connector 40 can be one, two, or more, and the number of second reinforcing ribs 43 matches the number of first reinforcing ribs 256. As an example, there are four beams 25, each including one first reinforcing rib 256, and four connectors 40, each including one second reinforcing rib 43. As another example, there are four beams 25, each including two first reinforcing ribs 256, and four connectors 40, each including two second reinforcing ribs 43.

[0233] The above technical solution, by setting a second reinforcing rib 43 to connect the first reinforcing ribs 256 of two adjacent beams 25, can further reduce the connection difficulty between the first reinforcing ribs 256 of multiple beams 25, thereby further improving the overall production efficiency of the battery device 2 and reducing costs.

[0234] In addition, in the sub-channel 2211 provided with inlet 222 or outlet 223, the connecting hole 241 is located at the end of the sub-channel 2211 away from inlet 222 or outlet 223, which can further extend the flow path of fluid in the channel 221, thereby further reducing the impact on the external environment when the battery device 2 malfunctions.

[0235] Figure 25 This is a partial exploded view of another housing 20 provided in some embodiments of this application. Figure 26 This is a three-dimensional structural diagram of the second seal 50 provided in some embodiments of this application.

[0236] Continue to refer to Figures 25 to 26 In some embodiments, the housing 20 further includes a second seal 50, which is connected between the second reinforcing rib 43 and the first reinforcing rib 256.

[0237] For example, during the connection of the second reinforcing rib 43 and the first reinforcing rib 256, the second sealing member 50 is first connected to at least one of the second reinforcing rib 43 and the first reinforcing rib 256, and then the beam body 255 of the beam body 25 is connected to the connecting body 42 of the connector 40, so that the second sealing member 50 is clamped between the second reinforcing rib 43 and the first reinforcing rib 256 to seal the gap between the second reinforcing rib 43 and the first reinforcing rib 256.

[0238] The second seal 50 can be directly connected between the first reinforcing rib 256 and the second reinforcing rib 43, or it can be restricted between the second reinforcing rib 43 and the first reinforcing rib 256 by other components.

[0239] The number of second seals 50 matches the number of first reinforcing ribs 256. As an example, there are four beams 25, each including one first reinforcing rib 256, and four second seals 50. As another example, there are four beams 25, each including two first reinforcing ribs 256, and eight second seals 50.

[0240] Optionally, the second seal 50 may be, but is not limited to, a gasket, sealant, or sealing ring, and can be selected according to the actual application environment.

[0241] Optionally, the second seal 50 may be, but is not limited to, made of materials such as silicone rubber, fluororubber, polytetrafluoroethylene, epoxy resin, or polyurethane.

[0242] The above technical solution, by setting a second sealing element 50, can achieve a sealed connection between the second reinforcing rib 43 and the first reinforcing rib 256 without welding them together, thereby reducing the overall manufacturing difficulty, improving production efficiency and reducing costs.

[0243] In some embodiments, the second seal 50 includes a second positioning groove, and at least one of the first reinforcing rib 256 and the second reinforcing rib 43 is engaged in the second positioning groove.

[0244] Figure 27 This is a three-dimensional structural schematic diagram of another battery device 2 provided in some embodiments of this application.

[0245] Continue to refer to Figure 27 In some embodiments, the battery device 2 further includes a pressure relief mechanism 60 connected to an outlet 223.

[0246] The pressure relief mechanism 60 is used to release internal pressure when the internal pressure or temperature of the frame 22 reaches a threshold. For example, when the fluid in the channel 221 reaches the outlet 223, the fluid can exert pressure on the pressure relief mechanism 60, and when the pressure reaches a preset threshold, the pressure relief mechanism 60 opens so that the fluid in the channel 221 can be discharged to the outside of the battery device 2.

[0247] The pressure relief mechanism 60 can be detachably connected to the frame 22 or integrally mounted on the frame 22. The pressure relief mechanism 60 can be directly connected to the frame 22 or constrained to the frame 22 by other components. As an example, the connection method between the pressure relief mechanism 60 and the frame 22 can be, but is not limited to, bolt connection, riveting, bonding, or snap-fit.

[0248] In some examples, the pressure relief mechanism 60 and the frame 22 are an integral structure. The frame 22 has a weak part, the thickness of which is less than the thickness of other areas on the frame 22. The pressure relief mechanism 60 is composed of the weak part and the area enclosed by the weak part.

[0249] The above technical solution provides a pressure relief mechanism 60 at the outlet 223, which allows the fluid in the channel 221 to be discharged to the outside of the battery device 2 only when certain conditions are met, thereby reducing unnecessary fluid discharge and further reducing the impact on the external environment.

[0250] According to some embodiments of this application, this application also provides an electrical device, including a battery device 2 of any of the above schemes, the battery device 2 being used to provide electrical energy.

[0251] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. All technical features and optional technical features of this application can be combined to form new technical solutions.

[0252] To better understand the battery device 2 provided in the embodiments of this application, based on the same inventive concept, embodiments of the battery device 2 in practical applications are described herein.

[0253] This application provides a battery device 2, which includes a battery cell 10 and a housing 20. The housing 20 includes a receiving space 21 and a frame 22. The battery cell 10 is received in the receiving space 21. The frame 22 is disposed along the outer periphery of the receiving space 21, and a channel 221 is formed inside the frame 22, surrounding the outer periphery of the receiving space 21. The frame 22 also has an inlet 222 and an outlet 223. The inlet 222 connects the receiving space 21 and the channel 221, and the outlet 223 connects the channel 221 and the outside of the housing 20. A blocking member 23 is also provided inside the channel 221, dividing the channel 221 into a flow path connecting the inlet 222 and the outlet 223, and substantially surrounding the receiving space 21.

[0254] The blocking component 23 in the above-described technical solution can block the flow of fluid, providing a flow path that roughly surrounds the receiving space 21 for the fluid flowing from the inlet 222 to the outlet 223, thereby extending the flow path and time of the fluid within the channel 221. This allows the fluid to effectively reduce its temperature within the channel 221, and simultaneously, impurities such as metal particles mixed in the fluid can better settle within the channel 221, thus reducing the risk of damage to other components located outside the battery device 2 after the fluid is discharged outside, as well as the risk of significant environmental pollution. In this way, the impact on the external environment when the battery device 2 malfunctions can be effectively reduced.

[0255] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0256] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery cell; The housing includes a receiving space and a frame, the battery cell is received in the receiving space, the frame is arranged along the outer periphery of the receiving space, and a channel is opened inside the frame, the channel surrounding the outer periphery of the receiving space; The frame is also provided with an inlet and an outlet. The inlet connects the accommodating space and the channel, and the outlet connects the channel and the outside of the box. The channel is also provided with a blocking component that divides the channel into a flow path that connects the inlet and the outlet and generally surrounds the accommodating space.

2. The battery device according to claim 1, characterized in that, The housing also includes a partition component disposed within the channel, which divides the channel into N sub-channels along a direction intersecting the channel's extension direction. The inlet and outlet are respectively provided for different layers of the sub-channels, and N is greater than or equal to 2. The separator has a connecting hole, through which two adjacent sub-channels are connected.

3. The battery device according to claim 2, characterized in that, The flow path approximately circles the containment space N times.

4. The battery device according to claim 2, characterized in that, The separating component includes a first separating member and a second separating member. The first separating member and the second separating member are spaced apart along a direction intersecting the extension direction of the channel, and divide the channel into a first sub-channel, a second sub-channel and a third sub-channel stacked along a direction intersecting the extension direction of the channel. The second sub-channel is located between the first sub-channel and the third sub-channel. The connecting hole includes a first hole and a second hole. The first hole is disposed on the first partition, and the first sub-flow channel and the second sub-flow channel are connected through the first hole. The second hole is disposed on the second partition, and the second sub-flow channel and the third sub-flow channel are connected through the second hole. The inlet is provided for one of the first sub-channel and the third sub-channel, and the outlet is provided for the other of the first sub-channel and the third sub-channel.

5. The battery device according to claim 4, characterized in that, The first partition and the second partition are spaced apart along the height of the housing, the first sub-channel is located at the bottom of the housing, and the third sub-channel is located at the top of the housing; The inlet is configured corresponding to the first sub-channel, and the outlet is configured corresponding to the third sub-channel.

6. The battery device according to claim 4, characterized in that, Both the first hole and the second hole are located close to the blocking component, the inlet is located corresponding to the first sub-channel, and the outlet is located corresponding to the third sub-channel; The inlet and the first hole are located on opposite sides of the blocking member along the extension direction of the first sub-channel, the first hole and the second hole are located on opposite sides of the blocking member along the extension direction of the second sub-channel, and the second hole and the outlet are located on opposite sides of the blocking member along the extension direction of the third sub-channel.

7. The battery device according to claim 6, characterized in that, The blocking component includes a first blocking member, a second blocking member, and a third blocking member. The first blocking member is disposed in the first sub-channel and divides the first sub-channel along the extension direction of the first sub-channel. The second blocking member is disposed within the second sub-channel and divides the second sub-channel along its extension direction; The third blocking member is disposed within the third sub-channel and divides the third sub-channel along its extension direction.

8. The battery device according to claim 7, characterized in that, In the stacking direction of the first sub-flow channel, the second sub-flow channel, and the third sub-flow channel, the first blocking member, the second blocking member, and the third blocking member at least partially overlap; or, The first blocking member, the second blocking member, and the third blocking member are configured as a single unit.

9. The battery device according to claim 2, characterized in that, The opening area of ​​the connecting hole is 50mm. 2 -3000mm 2 .

10. The battery device according to claim 9, characterized in that, The opening area of ​​the connecting hole is 200 mm. 2 -1300mm 2 .

11. The battery device according to claim 2, characterized in that, The area of ​​the cross-section of the sub-channel perpendicular to its extension direction is 50 mm². 2 -3000mm 2 .

12. The battery device according to claim 11, characterized in that, The area of ​​the cross-section of the sub-channel perpendicular to its extension direction is 200 mm². 2 -1300mm 2 .

13. The battery device according to claim 1, characterized in that, The frame includes M beams, which are arranged along the outer periphery of the accommodating space and connected end to end. Each beam has a cavity inside, and the cavities of the M beams are interconnected to form the channel. M is greater than or equal to 2. The blocking component is positioned at the junction of the first beam and the Mth beam, and separates the cavity of the first beam and the cavity of the Mth beam at the junction of the first beam and the Mth beam. The inlet is located on the first beam, and the outlet is located on the Mth beam.

14. The battery device according to claim 2, characterized in that, The frame includes M beams, which are arranged along the outer periphery of the accommodating space and connected end to end. Each beam has a cavity inside, and the cavities of the M beams are interconnected to form the channel. M is greater than or equal to 2. The blocking component is positioned at the junction of the first beam and the Mth beam, and separates the cavity of the first beam and the cavity of the Mth beam at the junction of the first beam and the Mth beam. When the number of layers N of the sub-channels is even, the inlet and the outlet are located on the first beam. When the number of layers N of the sub-channel is odd, the inlet is located on the first beam and the outlet is located on the Mth beam.

15. The battery device according to claim 13 or 14, characterized in that, Each of the beams includes two opposite end faces along its own length, and M of the beams are connected end to end through the end faces.

16. The battery device according to claim 14, characterized in that, Each beam includes a beam body and N-1 first reinforcing ribs, the cavity is disposed in the beam body, and the N-1 first reinforcing ribs are disposed in the cavity; The first stiffeners of every two adjacent beams are connected to form N-1 partition components, which divide the channel into N sub-channels along a direction intersecting the extension direction of the channel. The connecting hole is provided on the first reinforcing rib of at least one of the first beam and the Mth beam; In the sub-channel having the inlet or the outlet, the connecting hole is located at the end of the sub-channel furthest from the inlet or the outlet.

17. The battery device according to claim 16, characterized in that, The housing also includes a first sealing element, which is clamped between the first reinforcing ribs of two adjacent beams.

18. The battery device according to claim 13, characterized in that, The box body also includes multiple connectors, the number of which matches the number of beams; Each pair of adjacent beams is connected by the connector, and the connector has a cavity inside, through which the cavities of the multiple beams are connected; The blocking component is located at the position where the first beam and the Mth beam are connected by the connector.

19. The battery device according to claim 14, characterized in that, The box body also includes multiple connectors, the number of which matches the number of beams; Each pair of adjacent beams is connected by the connector, and the connector has a cavity inside, through which the cavities of the multiple beams are connected; The blocking component is located at the position where the first beam and the Mth beam are connected by the connector.

20. The battery device according to claim 19, characterized in that, The beam body includes a main beam body and N-1 first reinforcing ribs, the cavity is disposed in the main beam body, and the N-1 first reinforcing ribs are disposed in the cavity; The connector includes a connecting body and N-1 second reinforcing ribs. The connecting body connects the beam bodies of two adjacent beams. The cavity is disposed in the connecting body, and the N-1 second reinforcing ribs are disposed in the cavity. Each of the second reinforcing ribs is butt-connected to the first reinforcing ribs of two adjacent beams to form N-1 partition components, which divide the channel into N layers of sub-channels along a direction intersecting the extension direction of the channel. The connecting hole is provided on the first reinforcing rib of at least one of the first beam and the Mth beam; In a sub-channel having the inlet or the outlet, the connecting hole is located at the end of the sub-channel furthest from the inlet or the outlet.

21. The battery device according to claim 20, characterized in that, The housing also includes a second sealing element, which is connected between the second reinforcing rib and the first reinforcing rib.

22. The battery device according to any one of claims 1-21, characterized in that, The battery device also includes a pressure relief mechanism connected to the outlet.

23. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-22, the battery device being used to store or provide electrical energy.

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