Battery device and electric device

Abstract

The present application provides a battery device and an electric device. The battery device comprises a battery cell and a case, wherein the case comprises an accommodating space and a frame, the battery cell is accommodated in the accommodating space, the frame is arranged along the outer periphery of the accommodating space, a channel is provided inside the frame, and the channel surrounds the outer periphery of the accommodating space. The frame is further provided with an inlet and an outlet, the inlet is connected to the accommodating space and the channel, and the outlet is connected to the channel and the outside of the case. A blocking member is also provided in the channel, and the blocking member divides the channel to form a flow path connecting the inlet and the outlet and substantially surrounding the accommodating space.

Description

Battery device and electric device

[0001] Cross Reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202411113937.X, filed on August 14, 2024, entitled “Battery device and electric device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, and in particular to a battery device and an electric device. BACKGROUND

[0004] With the development of new energy technology, batteries are increasingly widely used, for example, in mobile phones, notebook computers, electric vehicles, electric cars, electric planes, electric ships, electric toy cars, electric toy ships, electric toy planes, and electric tools.

[0005] In the development of battery technology, the influence of abnormal states such as battery leakage or thermal runaway on the external environment will directly affect the reliability, use cost, and user experience of the terminal product. Therefore, how to effectively reduce the influence of the battery on the external environment when the battery produces an abnormal state is a technical problem that needs to be solved in battery technology. SUMMARY

[0006] In view of the above problems, the present application provides a battery device and an electric device, which can effectively reduce the influence of the battery device on the external environment when the battery device produces an abnormal state.

[0007] In a first aspect, the embodiments of the present application provide a battery device, which comprises a battery monomer and a box body. The box body comprises a containing space and a frame. The battery monomer is contained in the containing space, and the frame is arranged along the outer periphery of the containing space. The frame has a channel opened in the inside thereof, and the channel surrounds the outer periphery of the containing space. In addition, the frame is further provided with an inlet and an outlet. The inlet connects the containing space and the channel, and the outlet connects the channel and the outside of the box body. The channel is further provided with a blocking component, which divides the channel into a flow path that connects the inlet and the outlet and substantially surrounds the containing space.

[0008] The blocking component can block the flow of the fluid, and can provide a flow path that substantially surrounds the accommodation space for the fluid flowing from the inlet to the outlet, thereby prolonging the flow path and time of the fluid in the channel. The fluid can effectively reduce its own temperature in the channel, and the impurities such as metal particles mixed in the fluid can better precipitate in the channel, thereby reducing the risk of damage to other components located outside the battery device and the risk of greater pollution to the environment after the fluid is discharged to the outside of the battery device. In this way, the influence on the external environment when the battery device generates an abnormality can be effectively reduced.

[0009] In some embodiments of the first aspect, the box further includes a partition component disposed in the channel and partitioning the channel into N layers of sub-flow passages in a direction intersecting the extension direction of the channel, the inlet and the outlet are respectively arranged corresponding to the sub-flow passages of different layers, and N is greater than or equal to 2. The partition component is provided with a communication hole, and two adjacent layers of sub-flow passages are communicated through the communication hole.

[0010] The above technical solution can further prolong the flow path and time of the fluid in the channel by arranging the partition component, thereby further reducing the influence on the external environment when the battery device generates an abnormality.

[0011] In some embodiments of the first aspect, the flow path substantially surrounds the accommodation space N times.

[0012] The above technical solution can further prolong the flow path and time of the fluid in the channel, thereby further reducing the influence on the external environment when the battery device generates an abnormality.

[0013] In some embodiments of the first aspect, the partition component includes a first partition piece and a second partition piece, the first partition piece and the second partition piece are arranged in a direction intersecting the extension direction of the channel and partitioning the channel into a first sub-flow passage, a second sub-flow passage and a third sub-flow passage stacked in the direction intersecting the extension direction of the channel, and the second sub-flow passage is located between the first sub-flow passage and the third sub-flow passage. The communication hole includes a first hole and a second hole, the first hole is arranged on the first partition piece, the first sub-flow passage and the second sub-flow passage are communicated through the first hole, the second hole is arranged on the second partition piece, and the second sub-flow passage and the third sub-flow passage are communicated through the second hole. The inlet is arranged corresponding to one of the first sub-flow passage and the third sub-flow passage, and the outlet is arranged corresponding to the other of the first sub-flow passage and the third sub-flow passage.

[0014] The above technical solution can further prolong the flow path of the fluid in the channel by arranging the channel into a three-layer structure including the first sub-flow passage, the second sub-flow passage and the third sub-flow passage, thereby further reducing the influence on the external environment when the battery device generates an abnormality.

[0015] In some embodiments of the first aspect, the first partition and the second partition are spaced apart along a height of the tank, the first sub-flow passage is located at a bottom of the tank, and the third sub-flow passage is located at a top of the tank. The inlet is arranged corresponding to the first sub-flow passage, and the outlet is arranged corresponding to the third sub-flow passage.

[0016] The 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 influence on the external environment.

[0017] In some embodiments of the first aspect, the first hole and the second hole are arranged close to the blocking component, the inlet is arranged corresponding to the first sub-flow passage, and the outlet is arranged corresponding to the third sub-flow passage. The inlet and the first hole are respectively located on two opposite sides of the blocking component along an extension direction of the first sub-flow passage, the first hole and the second hole are respectively located on two opposite sides of the blocking component along an extension direction of the second sub-flow passage, and the second hole and the outlet are respectively located on two opposite sides of the blocking component along an extension direction of the third sub-flow passage.

[0018] The technical solution can further extend the flow path of the fluid in the channel by arranging the first hole and the second hole close to the blocking component, thereby further reducing the influence on the external environment when the battery device generates an abnormality.

[0019] In some embodiments of the first aspect, the blocking component includes a first blocking piece, a second blocking piece, and a third blocking piece. The first blocking piece is arranged in the first sub-flow passage and separates the first sub-flow passage along an extension direction of the first sub-flow passage. The second blocking piece is arranged in the second sub-flow passage and separates the second sub-flow passage along an extension direction of the second sub-flow passage. The third blocking piece is arranged in the third sub-flow passage and separates the third sub-flow passage along an extension direction of the third sub-flow passage.

[0020] The technical solution can flexibly adjust the structure or position of the first blocking piece, the second blocking piece, and the third blocking piece according to different needs by arranging the blocking component in a split structure including the first blocking piece, the second blocking piece, and the third blocking piece, thereby improving the setting flexibility and applicability of the blocking component.

[0021] In some embodiments of the first aspect, the first blocking piece, the second blocking piece, and the third blocking piece at least partially overlap in a stacking direction of the first sub-flow passage, the second sub-flow passage, and the third sub-flow passage. The positions of the first blocking piece, the second blocking piece, and the third blocking piece on the tank are substantially the same, reducing the structural complexity and facilitating maintenance.

[0022] In some embodiments of the first aspect, the first blocking piece, the second blocking piece, and the third blocking piece are arranged as one body.

[0023] In one aspect, the first barrier, the second barrier and the third barrier are connected without an additional connection process, simplifying the manufacturing process. Meanwhile, compared with connecting the first barrier, the second barrier and the third barrier through an additional connection process, the first barrier, the second barrier and the third barrier in the integrated structure have higher connection firmness.

[0024] In some embodiments of the first aspect, the opening area of the communication hole is 50mm 2 -3000mm 2 .

[0025] The above technical solution sets the opening area of the communication hole in the above range, which can make the overall flow time of the fluid in the channel within a suitable range, thereby reducing the influence on the external environment when the battery device generates an abnormality while reducing the risk of excessive pressure in the frame.

[0026] In some embodiments of the first aspect, the opening area of the communication hole is 200mm 2 -1300mm 2 . The complementary effect of reducing the influence on the external environment when the battery device generates an abnormality and reducing the risk of excessive pressure in the frame can be further improved.

[0027] In some embodiments of the first aspect, the area of the cross section of the sub-flow passage perpendicular to the extension direction of the sub-flow passage is 50mm 2 -3000mm 2 .

[0028] The above technical solution sets the area of the cross section of the sub-flow passage perpendicular to the extension direction of the sub-flow passage within the above range, which can make the overall flow time of the fluid in the channel within a suitable range, thereby reducing the influence on the external environment when the battery device generates an abnormality while reducing the risk of excessive pressure in the frame.

[0029] In some embodiments of the first aspect, the area of the cross section of the sub-flow passage perpendicular to the extension direction of the sub-flow passage is 200mm 2 -1300mm 2 . The complementary effect of reducing the influence on the external environment when the battery device generates an abnormality and reducing the risk of excessive pressure in the frame can be further improved.

[0030] In some embodiments of the first aspect, the frame comprises M beam bodies, the M beam bodies are arranged along the outer periphery of the accommodation space and connected end to end, a cavity is formed in each beam body, the cavities of the M beam bodies are connected to form a channel, and M is greater than or equal to 2. The blocking component is arranged at a position where the first beam body and the Mth beam body are connected, and separates the cavity of the first beam body and the cavity of the Mth beam body at the position where the first beam body and the Mth beam body are connected. The inlet is arranged on the first beam body, and the outlet is arranged on the Mth beam body.

[0031] The above technical solution can reduce the assembly difficulty of the blocking component and reduce the production cost by arranging M beam bodies to form the frame.

[0032] In some embodiments of the first aspect, the frame comprises M beam bodies, the M beam bodies are arranged along the outer periphery of the accommodation space and connected end to end, a cavity is formed in each beam body, the cavities of the M beam bodies are connected to form a channel, and M is greater than or equal to 2. The blocking component is arranged at a position where the first beam body and the Mth beam body are connected, and separates the cavity of the first beam body and the cavity of the Mth beam body at the position where the first beam body and the Mth beam body are connected. In the case where the number of layers N of the sub-flow channel is even, the inlet and the outlet are arranged on the first beam body. In the case where the number of layers N of the sub-flow channel is odd, the inlet is arranged on the first beam body, and the outlet is arranged on the Mth beam body.

[0033] In this way, the flow path and time of the fluid in the channel can be maximized under the condition that the number of layers of the sub-flow channel is constant.

[0034] In some embodiments of the first aspect, each beam body comprises two end faces opposite in the length direction of the beam body, and the M beam bodies are connected end to end through the end faces.

[0035] The above technical solution can tilt the two end faces opposite in the length direction of the beam body, reduce the operation difficulty of directly connecting the plurality of beam bodies, and help improve the production efficiency.

[0036] In some embodiments of the first aspect, each beam body comprises a beam body and N-1 first reinforcing ribs, the cavity is arranged in the beam body, and the N-1 first reinforcing ribs are arranged in the cavity. The first reinforcing ribs of each adjacent two beam bodies are connected in abutment to form N-1 separation components, and the N-1 separation components separate the channel into N layers of sub-flow channels in a direction intersecting the extension direction of the channel. A communication hole is formed in the first reinforcing rib of at least one of the first beam body and the Mth beam body. In the sub-flow channel provided with the inlet or the outlet, the communication hole is located at one end of the sub-flow channel away from the inlet or the outlet.

[0037] The technical scheme above connects the first reinforcing ribs of the plurality of beam bodies to form the partition component, which is beneficial to reduce the manufacturing difficulty of the frame and reduce the production cost.

[0038] In some embodiments of the first aspect, the box further comprises a first seal, the first seal being clamped between the first reinforcing ribs of the two adjacent beam bodies.

[0039] The technical scheme above sets the first seal, which can realize the sealed connection of the two beam bodies without welding the first reinforcing ribs of the two adjacent beam bodies, thereby reducing the manufacturing difficulty of the whole, improving the production efficiency and reducing the cost.

[0040] In some embodiments of the first aspect, the box further comprises a plurality of connecting pieces, the number of the connecting pieces matching the number of the beam bodies. Each two adjacent beam bodies are connected by a connecting piece, the connecting piece being internally provided with a cavity, and the cavities of the plurality of beam bodies being communicated through the cavity. The blocking component is arranged at the position where the first beam body and the Mth beam body are connected by the connecting piece.

[0041] The technical scheme above introduces the connecting piece to connect the two adjacent beam bodies, which can effectively reduce the connection difficulty between the plurality of beam bodies, thereby further improving the production efficiency of the whole battery device and reducing the cost.

[0042] In some embodiments of the first aspect, the beam body comprises a beam main body and N-1 first reinforcing ribs, the cavity being arranged in the beam main body, and the N-1 first reinforcing ribs being arranged in the cavity. The connecting piece comprises a connecting main body and N-1 second reinforcing ribs, the connecting main body connecting the beam main bodies of the two adjacent beam bodies, the cavity being arranged in the connecting main body, and the N-1 second reinforcing ribs being arranged in the cavity. Each second reinforcing rib abuts against the first reinforcing ribs of the two adjacent beam bodies to form N-1 partition components, the N-1 partition components dividing the channel into N layers of sub-flow passages along a direction intersecting the extension direction of the channel. The first reinforcing rib of at least one of the first beam body and the Mth beam body is provided with a communication hole. In the sub-flow passage provided with the inlet or outlet, the communication hole is located at the end of the sub-flow passage away from the inlet or outlet.

[0043] The technical scheme above connects the first reinforcing ribs of the two adjacent beam bodies through the second reinforcing ribs, which can further reduce the connection difficulty between the first reinforcing ribs of the plurality of beam bodies, thereby further improving the production efficiency of the whole battery device and reducing the cost. In addition, in the sub-flow passage provided with the inlet or outlet, the communication hole is located at the end of the sub-flow passage away from the inlet or outlet, which can further lengthen the flow path of the fluid in the channel, thereby further reducing the influence on the external environment when the battery device generates an abnormality.

[0044] In some embodiments of the first aspect, the box further comprises a second seal, the second seal being connected between the second reinforcing rib and the first reinforcing rib.

[0045] The technical scheme above can realize the sealed connection of the second reinforcing rib and the first reinforcing rib without welding, thereby reducing the overall manufacturing difficulty, improving the production efficiency and reducing the cost.

[0046] In some embodiments of the first aspect, the battery device further comprises a pressure relief mechanism, which is in communication with the outlet.

[0047] The technical scheme above provides the pressure relief mechanism at the outlet, so that the fluid in the channel can be discharged to the outside of the battery device only when it reaches a certain condition, thereby reducing unnecessary fluid discharge and further reducing the influence on the external environment.

[0048] In the second aspect, the application provides a power utilization device, which comprises the battery device provided in any of the embodiments of the first aspect, and the battery device is used to provide electric energy.

[0049] The above description is only a summary of the technical scheme of the application, and in order to make the technical means of the application more clear and understandable, the specific embodiments of the application are described below according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand. BRIEF DESCRIPTION OF DRAWINGS

[0050] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals are used throughout the several views that follow. In the drawings:

[0051] FIG. 1 is a structural schematic diagram of a vehicle provided in some embodiments of the application;

[0052] FIG. 2 is a perspective structural schematic diagram of a battery device provided in some embodiments of the application;

[0053] FIG. 3 is a front structural schematic diagram of a box of a battery device provided in some embodiments of the application;

[0054] FIG. 4 is a sectional structural schematic diagram of FIG. 3 along A-A;

[0055] FIG. 5 is a sectional structural schematic diagram of FIG. 3 along B-B;

[0056] FIG. 6 is a perspective structural schematic diagram of a box provided in some embodiments of the application;

[0057] FIG. 7 is a flow direction schematic diagram of a fluid in the box shown in FIG. 6;

[0058] Fig. 8 is an exploded structural schematic view of a box according to some embodiments of the present application;

[0059] Fig. 9 is a structural schematic view of a beam of the box shown in Fig. 8;

[0060] Fig. 10 is a top structural schematic view of another box according to some embodiments of the present application;

[0061] Fig. 11 is a cross-sectional structural schematic view of Fig. 10 along C-C;

[0062] Fig. 12 is a perspective structural schematic view of another box according to some embodiments of the present application;

[0063] Fig. 13 is an enlarged structural schematic view of a portion of Fig. 12 at H;

[0064] Fig. 14 is a flow direction schematic view of a fluid in the box shown in Fig. 12;

[0065] Fig. 15 is an exploded structural schematic view of another box according to some embodiments of the present application;

[0066] Fig. 16 is a structural schematic view of a beam of the box shown in Fig. 15;

[0067] Fig. 17 is a top structural schematic view of still another box according to some embodiments of the present application;

[0068] Fig. 18 is a cross-sectional structural schematic view of Fig. 17 along D-D;

[0069] Fig. 19 is an exploded structural schematic view of yet another box according to some embodiments of the present application;

[0070] Fig. 20 is a partial exploded structural schematic view of still another box according to some embodiments of the present application;

[0071] Fig. 21 is a structural schematic view of a first seal according to some embodiments of the present application;

[0072] Fig. 22 is a partial exploded structural schematic view of still another box according to some embodiments of the present application;

[0073] Fig. 23 is a partial exploded structural schematic view of still another box according to some embodiments of the present application;

[0074] Fig. 24 is a structural schematic view of a beam and a connector of a battery device according to some embodiments of the present application;

[0075] Fig. 25 is a partial exploded structural schematic view of still another box according to some embodiments of the present application;

[0076] FIG. 26 is a perspective view of a second seal according to some embodiments of the present application;

[0077] FIG. 27 is a perspective view of another battery device according to some embodiments of the present application.

[0078] The reference signs in the detailed description of the embodiments are as follows: 1, vehicle; 2, battery device; 3, controller; 4, motor; 10, battery cell; 20, case; 21, accommodation space; 22, frame; 221, passage; 2211, sub-flow passage; 2211a, first sub-flow passage; 2211b, second sub-flow passage; 2211c, third sub-flow passage; 222, inlet; 223, outlet; 23, blocking member; 23a, first blocking piece; 23b, second blocking piece; 23c, third blocking piece; 24, partition member; 24a, first partition piece; 24b, second partition piece; 241, communication hole; 241a, first hole; 241b, second hole; 25, beam body; 251, cavity; 252, first surface; 253, second surface; 254, end surface; 255, beam main body; 256, first reinforcing rib; 30, first seal; 40, connecting member; 41, cavity; 42, connecting main body; 43, second reinforcing rib; 50, second seal; 60, pressure relief mechanism. DETAILED DESCRIPTION

[0079] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification of the present application and claims and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification of the present application and claims or the above description of drawings are used to distinguish different objects, but not to describe a particular order or primary and secondary relationship.

[0081] Reference to "an embodiment" or "the embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" or "in the embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive.

[0082] In the description of the application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0083] The term "and / or" in this application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0084] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0085] "Multiple" appearing in this application means more than two (including two).

[0086] The term "parallel" in this application not only includes the case of absolute parallel, but also includes the case of approximate parallel which is generally recognized in engineering; at the same time, "vertical" also not only includes the case of absolute vertical, but also includes the case of approximate vertical which is generally recognized in engineering.

[0087] In this application, the battery cell can 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. The embodiments of the application are not limited thereto. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc. The embodiments of the application are also not limited thereto.

[0088] The battery device mentioned in the embodiments of the application can include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel, or in a mixed connection through a busbar component.

[0089] In some embodiments, the battery device can be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0090] In some embodiments, the battery device can be a battery pack, which includes a box body and battery cells, and the battery cells or battery modules are contained in the box body.

[0091] In some embodiments, the box body can be part of the chassis structure of the vehicle. For example, part of the box body can be at least part of the floor of the vehicle, or part of the box body can be at least part of the cross beam and longitudinal beam of the vehicle.

[0092] In some embodiments, the battery device can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0093] With the development of new energy technology, batteries are increasingly widely used, such as in mobile phones, laptops, electric cars, electric vehicles, electric aircraft, electric ships, electric toy cars, electric toy ships, electric toy aircraft, and electric tools.

[0094] In the development of battery technology, the influence of abnormal states such as battery leakage or thermal runaway on the external environment will directly affect the reliability, use cost, and user experience of the terminal product.

[0095] When the battery device is abnormal, a large amount of fluid will be generated inside the battery device. For example, when the battery cell in the battery device produces thermal runaway, a large amount of high-temperature gas will be generated inside the battery device, and the high-temperature gas will also be mixed with some impurities such as metal particles; when the battery cell in the battery device leaks electrolyte, a large amount of electrolyte will be generated inside the battery device. When the battery device is abnormal, the fluid generated inside the battery device will be directly discharged to the outside of the battery device in a short time, which not only easily causes damage to other components located around the outside of the battery device, but also causes serious pollution to the environment.

[0096] Based on the above considerations, the embodiments of the present application provide a battery device, which includes a battery cell and a box body, the box body includes a containing space and a frame, the battery cell is contained in the containing space, and the frame is arranged along the outer periphery of the containing space. The inside of the frame is provided with a channel, and the channel surrounds the outer periphery of the containing space. The frame is further provided with an inlet and an outlet, the inlet connects the containing space and the channel, and the outlet connects the channel and the outside of the box body. The channel is further provided with a blocking component, which divides the channel into a flow path that connects the inlet and the outlet and substantially surrounds the containing space.

[0097] When the battery device generates an abnormality, the fluid generated inside the battery device can enter the channel through the inlet, flow in the channel to the outlet, and then be discharged to the outside of the battery device through the outlet. The fluid can be a gas or a liquid. The blocking component of the above technical solution can block the flow of the fluid and provide a flow path that substantially surrounds the accommodation space for the fluid flowing from the inlet to the outlet, thereby prolonging the flow path and time of the fluid in the channel. The fluid can effectively reduce its own temperature in the channel, and the impurities such as metal particles mixed in the fluid can better precipitate in the channel, thereby reducing the risk of damage to other components located outside the battery device and the risk of causing greater pollution to the environment after the fluid is discharged to the outside of the battery device. In this way, the influence on the external environment when the battery device generates an abnormality can be effectively reduced.

[0098] The technical solutions described in the embodiments of the present application are applicable to battery devices and electric devices using battery devices.

[0099] The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer, etc.

[0100] It should be understood that the technical solutions described in the embodiments of the present application are not only limited to the above-described battery devices and electric devices, but also applicable to all battery devices including a battery box and electric devices using battery devices. However, for the sake of brevity, the following embodiments are described with the electric vehicle as an example.

[0101] FIG. 1 is a structural schematic diagram of a vehicle provided by some embodiments of the present application.

[0102] With continued reference to FIG. 1, the inside of the vehicle 1 is provided with a battery device 2, which can be arranged at the bottom, the head, or the tail of the vehicle 1. The battery device 2 can be used for power supply of the vehicle 1, for example, the battery device 2 can be used as an operating power source of the vehicle 1.

[0103] The vehicle 1 can further include a controller 3 and a motor 4, and the controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, to meet the power demand of the vehicle 1 during starting, navigation, and driving.

[0104] In some embodiments of the present application, the battery device 2 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing the fuel or natural gas to provide driving power for the vehicle 1.

[0105] FIG. 2 is a perspective view of a battery device according to some embodiments of the present application, FIG. 3 is a front view of a box of a battery device according to some embodiments of the present application, FIG. 4 is a sectional view of FIG. 3 along A-A, FIG. 5 is a sectional view of FIG. 3 along B-B, FIG. 6 is a perspective view of a box according to some embodiments of the present application, FIG. 7 is a schematic view of the flow direction of a fluid in the box shown in FIG. 6, FIG. 8 is an exploded view of a box according to some embodiments of the present application, and FIG. 9 is a perspective view of a beam of the box shown in FIG. 8.

[0106] Referring to FIGS. 2 to 9, the present application provides a battery device 2, which includes a battery cell 10 and a box 20. The box 20 includes a containing space 21 and a frame 22. The battery cell 10 is contained in the containing space 21, and the frame 22 is arranged along the outer periphery of the containing space 21. The frame 22 has a channel 221 formed therein, which surrounds the outer periphery of the containing space 21. The frame 22 further has an inlet 222 and an outlet 223. The inlet 222 connects the containing space 21 and the channel 221, and the outlet 223 connects the channel 221 and the outside of the box 20. The channel 221 further has a blocking member 23 arranged therein. The blocking member 23 divides the channel 221 into a flow path that surrounds the containing space 21 and connects the inlet 222 and the outlet 223.

[0107] In the battery device 2, the box 20 is used to contain the battery cell 10. The box 20 can have various structures, such as a cylinder, a cuboid, etc. The battery cell 10 can be one or multiple. If the battery cell 10 is multiple, the multiple battery cells 10 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 10 are connected in series and in parallel. The multiple battery cells 10 can be directly connected in series, in parallel, or in a mixed connection, and then the whole is contained in the box 20. Alternatively, the multiple battery cells 10 can be first connected in series, in parallel, or in a mixed connection to form a battery module, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is contained in the box 20.

[0108] Exemplarily, the frame 22 can be a cuboid-shaped frame 22, or a cylindrical frame 22, or other irregular frames 22, etc. Correspondingly, the shape of the accommodating space 21 matches the shape of the frame 22. If the frame 22 is a cuboid-shaped frame 22, the accommodating space 21 is a cuboid. If the frame 22 is a cylindrical frame 22, the accommodating space 21 is a cylinder.

[0109] Optionally, the frame 22 can be made of, but not limited to, metal or non-metal materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc. The non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0110] In the battery device 2, the battery cell 10 can be one or multiple. If the battery cell 10 is multiple, the multiple battery cells 10 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 10 are connected in series and in parallel. The multiple battery cells 10 can be directly connected in series, in parallel, or in a mixed connection, and then the whole of the multiple battery cells 10 is accommodated in the box 20. Of course, the multiple battery cells 10 can be first connected in series, in parallel, or in a mixed connection to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box 20.

[0111] In some examples, the battery cell 10 is multiple, and the multiple battery cells 10 are first connected in series, in parallel, or in a mixed connection to form a battery module. Then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box 20.

[0112] The multiple battery cells 10 in the battery module can be electrically connected through a busbar component to realize the parallel connection, series connection, or mixed connection of the multiple battery cells 10 in the battery module.

[0113] The blocking component 23 is arranged in the channel 221 and divides the channel 221 along the extension direction of the channel 221. The blocking component 23 is used to block the flow of the fluid located in the channel 221. The inlet 222 and the outlet 223 are arranged close to the blocking component 23 to provide a flow path for the fluid flowing from the inlet 222 to the outlet 223, which generally surrounds the accommodating space 21. The flow path refers to the route that the fluid located in the channel 221 can pass through. In some examples, the flow path can also be referred to as a flow channel.

[0114] Exemplarily, the blocking component 23 has a first end portion and a second end portion, the channel 221 is connected between the first end portion and the second end portion, fluid can flow between the first end portion and the second end portion, the inlet 222 is arranged close to the first end portion, and the outlet 223 is arranged close to the second end portion. After the fluid enters the channel 221 from the inlet 222, the fluid flows in a direction away from the blocking component 23 under the blocking of the first end portion of the blocking component 23, substantially circulates around the accommodation space 21, and reaches the second end portion of the blocking component 23, and then is output to the external environment from the outlet 223. Here, substantially circulate means that the flow path of the fluid in the channel 221 can be substantially around the accommodation space 21 once, can be around the accommodation space 21 multiple times in a manner similar to multiple annular layers being stacked, or can be around the accommodation space 21 multiple times in a spiral manner.

[0115] In some examples, the channel 221 is a single-layer structure around the outer periphery of the accommodation space 21, after the fluid enters the channel 221 from the inlet 222, the fluid flows in a direction away from the blocking component 23 under the blocking of the first end portion of the blocking component 23, substantially circulates around the accommodation space 21 once, and reaches the second end portion of the blocking component 23, and then is output to the external environment from the outlet 223.

[0116] In some examples, the channel 221 is a multi-layer structure around the outer periphery of the accommodation space 21, which can be, but is not limited to, a two-layer structure, a three-layer structure, or a four-layer structure, and the like. Hereinafter, a case where the channel 221 is a two-layer structure around the outer periphery of the accommodation space 21 is taken as an example for description. The channel 221 includes a first sub-flow passage 2211a and a second sub-flow passage 2211b stacked in a direction intersecting the extension direction of the channel 221, both the first sub-flow passage 2211a and the second sub-flow passage 2211b are around the outer periphery of the accommodation space 21, the first sub-flow passage 2211a and the second sub-flow passage 2211b are communicated through a communication hole 241 arranged close to the blocking component 23, the inlet 222 is arranged corresponding to the first sub-flow passage 2211a, and the outlet 223 is arranged corresponding to the second sub-flow passage 2211b. After the fluid enters the first sub-flow passage 2211a from the inlet 222, the fluid flows in a direction away from the blocking component 23 in the first sub-flow passage 2211a under the blocking of the first end portion of the blocking component 23, flows along the circumferential direction of the accommodation space 21 in the first sub-flow passage 2211a and substantially circulates around the accommodation space 21 once, reaches the blocking component 23, and then enters the second sub-flow passage 2211b from the communication hole 241. The fluid flows in a direction away from the blocking component 23 in the second sub-flow passage 2211b under the blocking of the blocking component 23, flows along the circumferential direction of the accommodation space 21 in the second sub-flow passage 2211b and substantially circulates around the accommodation space 21 once again, reaches the second end portion of the blocking component 23, and then is output to the external environment from the outlet 223.

[0117] The blocking component 23 can be detachably connected to the inner wall of the frame 22, or can be integrally arranged 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 can be limited on the inner wall of the frame 22 through other components. For example, the connection mode of the blocking component 23 and the inner wall of the frame 22 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0118] Optionally, the blocking component 23 can be, but is not limited to, a plate-shaped structure, a block-shaped structure, a columnar structure or a film layer structure.

[0119] Optionally, the blocking component 23 can be, but is not limited to, made of metal or non-metal materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, and the non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide.

[0120] In some examples, the blocking component 23 and the frame 22 are made of the same material, which can simplify the preparation process and reduce costs.

[0121] Optionally, the shape of the inlet 222 can be, but is not limited to, circular, rectangular, oval, triangular or trapezoidal, and the shape of the outlet 223 can be, but is not limited to, circular, rectangular, oval, triangular or trapezoidal, which can be selected according to the actual application environment.

[0122] Optionally, the number of inlets 222 can be one or more, and the number of outlets 223 can be one or more, which can be selected according to the actual application environment.

[0123] When the battery device 2 generates an abnormality, the fluid generated inside the battery device 2 can enter the channel 221 through the inlet 222, flow in the channel 221 to the outlet 223, and then be discharged to the outside of the battery device 2 through the outlet 223. The fluid can be a gas or a liquid.

[0124] In some examples, when the battery cell 10 in the battery device 2 generates thermal runaway, a large amount of high-temperature gas will exist in the containing space 21 of the battery device 2, and some metal particles and other impurities will also be mixed in the high-temperature gas.

[0125] In some examples, when the battery cell 10 in the battery device 2 generates electrolyte leakage, a large amount of electrolyte will exist in the containing space 21 of the battery device 2, and some metal particles and other impurities will also be mixed in the electrolyte.

[0126] It should be noted that when the battery cell 10 in the battery device 2 generates thermal runaway, a large amount of high-temperature gas is generated, and electrolyte leakage is also easily caused.

[0127] The blocking component 23 can block the flow of fluid, and can provide a flow path for the fluid flowing from the inlet 222 to the outlet 223 that substantially surrounds the accommodation space 21, thereby extending the flow path and time of the fluid in the channel 221. This enables the fluid to effectively reduce its own temperature in the channel 221, and the impurities such as metal particles mixed in the fluid can be better precipitated in the channel 221, thereby reducing the risk of damage to other components located outside the battery device 2 and the risk of greater pollution to the environment after the fluid is discharged to the outside of the battery device 2. In this way, the influence on the external environment when the battery device 2 generates an anomaly can be effectively reduced.

[0128] FIG. 10 is a top view of another box 20 according to some embodiments of the present application, FIG. 11 is a cross-sectional view of FIG. 10 along C-C, FIG. 12 is a perspective view of another box 20 according to some embodiments of the present application, FIG. 13 is an enlarged view of a portion H of FIG. 12, FIG. 14 is a schematic view of the flow direction of fluid in the box 20 shown in FIG. 12, FIG. 15 is an exploded view of another box 20 according to some embodiments of the present application, FIG. 16 is a perspective view of a beam 25 of the box 20 shown in FIG. 15, FIG. 17 is a top view of still another box 20 according to some embodiments of the present application, and FIG. 18 is a cross-sectional view of FIG. 17 along D-D.

[0129] With reference to FIGS. 10-18, in some embodiments, the box 20 further includes a partition component 24 disposed in the channel 221 and partitioning the channel 221 into N layers of sub-flow passages 2211 in a direction intersecting the extension direction of the channel 221, the inlet 222 and the outlet 223 are respectively arranged corresponding to different layers of the sub-flow passages 2211, and N is greater than or equal to 2. The partition component 24 is provided with a communication hole 241, and two adjacent layers of the sub-flow passages 2211 are communicated through the communication hole 241.

[0130] The partition component 24 can partition the channel 221 into N layers of sub-flow passages 2211 in a direction intersecting the extension direction of the channel 221, where N can be, but is not limited to, 2, 3, 4, 5, or 6, etc. The box 20 can include N-1 partition components 24, which are arranged in a direction intersecting the extension direction of the channel 221 to partition the channel 221 into N layers of sub-flow passages 2211 in a direction intersecting the extension direction of the channel 221.

[0131] The following will be described taking an example in which the partition component 24 partitions the channel 221 into two layers of sub-flow passages 2211 in a direction intersecting the extension direction of the channel 221.

[0132] Exemplarily, the partition component 24 divides the channel 221 into a first sub-flow passage 2211a and a second sub-flow passage 2211b which are stacked along a direction intersecting the extension direction of the channel 221, both of which surround the outer periphery of the accommodation space 21, and are communicated through the communication hole 241. After the fluid enters the first sub-flow passage 2211a from the inlet 222, the fluid flows in the first sub-flow passage 2211a in a direction away from the blocking component 23 under the blocking of the blocking component 23, and then flows along the circumference of the accommodation space 21 to the position where the first hole 241a is located, and then enters the second sub-flow passage 2211b through the communication hole 241, and then flows along the circumference of the accommodation space 21 to the blocking component 23 in the second sub-flow passage 2211b, and then is output to the external environment from the outlet 223.

[0133] The partition component 24 can be detachably connected to the inner wall of the frame 22, or can be integrally arranged 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 can be limited on the inner wall of the frame 22 through other components. As an example, the connection mode of the partition component 24 and the inner wall of the frame 22 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0134] Optionally, the partition component 24 can be, but is not limited to, a plate-shaped structure, a block-shaped structure, a columnar structure or a film layer structure, etc.

[0135] Optionally, the partition component 24 can be, but is not limited to, made of metal or non-metal materials, for example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0136] In some examples, the partition component 24 and the frame 22 are made of the same material, which can simplify the preparation process and reduce costs.

[0137] Optionally, the shape of the communication hole 241 can be, but is not limited to, circular, rectangular, oval, triangular or trapezoidal, etc., which can be selected according to the actual application environment.

[0138] Optionally, the number of the communication hole 241 can be one or more, which can be selected according to the actual application environment.

[0139] The above technical scheme can further prolong the flow path and time of the fluid in the channel 221 by arranging the partition component 24, so as to further reduce the influence of the battery device 2 on the external environment when the battery device 2 generates an abnormality.

[0140] In some embodiments, the partition member 24 partitions the passage 221 into N layers of sub-paths 2211 in a direction perpendicular to the extension direction of the passage 221.

[0141] In some embodiments, the cross-sectional shape of the sub-paths 2211 in a direction perpendicular to the extension direction of the passage 221 can be, but is not limited to, rectangular, square, parallelogram, triangle, or circle, etc.

[0142] In some embodiments, the flow path N approximately surrounds the accommodation space 21.

[0143] In other words, the communication hole 241 is arranged close to the blocking member 23. The above description takes the example that the partition member 24 is capable of partitioning the passage 221 into two layers of sub-paths 2211 in a direction intersecting the extension direction of the passage 221.

[0144] Exemplarily, the partition member 24 partitions the passage 221 into a first sub-path 2211a and a second sub-path 2211b stacked in a direction intersecting the extension direction of the passage 221, both of which surround the outer periphery of the accommodation space 21, and the first sub-path 2211a and the second sub-path 2211b are communicated through the communication hole 241. After the fluid enters the first sub-path 2211a from the inlet 222, the fluid flows in the first sub-path 2211a in a direction away from the blocking member 23 under the blocking of the blocking member 23, flows in the first sub-path 2211a along the circumferential direction of the accommodation space 21 and approximately surrounds the accommodation space 21 for one round to reach the blocking member 23, then enters the second sub-path 2211b from the communication hole 241, and the fluid flows in the second sub-path 2211b in a direction away from the blocking member 23 under the blocking of the blocking member 23, flows in the second sub-path 2211b along the circumferential direction of the accommodation space 21 and approximately surrounds the accommodation space 21 for one round again to reach the blocking member 23, and then is outputted to the external environment from the outlet 223.

[0145] In this way, the above technical solution can further prolong the flow path and time of the fluid in the passage 221, thereby further reducing the influence on the external environment when the battery device 2 generates an abnormality.

[0146] In some embodiments, the partition component 24 comprises 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 and divide the channel 221 into a first sub-flow passage 2211a, a second sub-flow passage 2211b and a third sub-flow passage 2211c stacked along the direction intersecting the extension direction of the channel 221, the second sub-flow passage 2211b is located between the first sub-flow passage 2211a and the third sub-flow passage 2211c. The communication hole 241 comprises a first hole 241a and a second hole 241b, the first hole 241a is arranged on the first partition 24a, the first sub-flow passage 2211a and the second sub-flow passage 2211b communicate through the first hole 241a, the second hole 241b is arranged on the second partition 24b, the second sub-flow passage 2211b and the third sub-flow passage 2211c communicate through the second hole 241b. The inlet 222 is arranged corresponding to one of the first sub-flow passage 2211a and the third sub-flow passage 2211c, and the outlet 223 is arranged corresponding to the other of the first sub-flow passage 2211a and the third sub-flow passage 2211c.

[0147] The inlet 222 is arranged corresponding to one of the first sub-flow passage 2211a and the third sub-flow passage 2211c, which can be understood as that the inlet 222 directly communicates with one of the first sub-flow passage 2211a and the third sub-flow passage 2211c, that is, the inlet 222 is arranged on the frame 22 surrounding one of the first sub-flow passage 2211a and the third sub-flow passage 2211c. The outlet 223 is arranged corresponding to the other of the first sub-flow passage 2211a and the third sub-flow passage 2211c, which can be understood as that the outlet 223 directly communicates with the other of the first sub-flow passage 2211a and the third sub-flow passage 2211c, that is, the outlet 223 is arranged on the frame 22 surrounding the other of the first sub-flow passage 2211a and the third sub-flow passage 2211c.

[0148] In some examples, the inlet 222 is arranged corresponding to the first sub-flow passage 2211a, and the outlet 223 is arranged corresponding to the third sub-flow passage 2211c.

[0149] In some examples, the inlet 222 is arranged corresponding to the third sub-flow passage 2211c, and the outlet 223 is arranged corresponding to the first sub-flow passage 2211.

[0150] Exemplarily, the inlet 222 is arranged corresponding to the first sub-flow passage 2211a, and the outlet 223 is arranged corresponding to the third sub-flow passage 2211c. The first sub-flow passage 2211a, the second sub-flow passage 2211b and the third sub-flow passage 2211c all surround the outer periphery of the containing space 21. After the fluid enters the first sub-flow passage 2211a from the inlet 222, the fluid flows in the first sub-flow passage 2211a in a direction away from the blocking member 23 under the blocking of the blocking member 23. After the fluid flows in the first sub-flow passage 2211a along the circumference of the containing space 21 to the position where the first hole 241a is located, the fluid enters the second sub-flow passage 2211b through the first hole 241a. After the fluid flows in the second sub-flow passage 2211b along the circumference of the containing space 21 to the position where the second hole 241b is located, the fluid enters the third sub-flow passage 2211c through the second hole 241b. After the fluid flows in the third sub-flow passage 2211c along the circumference of the containing space 21 to the blocking member 23, the fluid is then output to the external environment from the outlet 223.

[0151] Optionally, the first partition 24a and the second partition 24b can have the same structural shape or different structural shapes. The first partition 24a and the second partition 24b can be made of the same material or different materials.

[0152] Optionally, the first hole 241a and the second hole 241b can have the same shape or different shapes.

[0153] The above technical solution can further prolong the flow path of the fluid in the channel 221 by arranging the channel 221 to have a three-layer structure including the first sub-flow passage 2211a, the second sub-flow passage 2211b and the third sub-flow passage 2211c, thereby further reducing the influence of the battery device 2 on the external environment when the battery device 2 generates an abnormality.

[0154] In some embodiments, the first partition 24a and the second partition 24b are arranged at intervals along the height of the box body 20, the first sub-flow passage 2211a is located at the bottom of the box body 20, and the third sub-flow passage 2211c is located at the top of the box body 20. The inlet 222 is arranged corresponding to the first sub-flow passage 2211a, and the outlet 223 is arranged corresponding to the third sub-flow passage 2211c.

[0155] When the fluid enters the second sub-flow channel 2211b from the first sub-flow channel 2211a, since the second sub-flow channel 2211b is located on the top of the first sub-flow channel 2211a, some metal particles or other impurities mixed in the fluid will fall into the first sub-flow channel 2211a under the action of gravity, so as to reduce the content of metal particles or other impurities in the fluid entering the second sub-flow channel 2211b.

[0156] In this way, the above technical solution can effectively reduce the content of metal particles or other impurities in the fluid discharged to the outside of the battery device 2, thereby further reducing the influence on the external environment.

[0157] In some embodiments, the first hole 241a and the second hole 241b are both arranged close to the blocking component 23, the inlet 222 corresponds to the first sub-flow channel 2211a, and the outlet 223 corresponds to the third sub-flow channel 2211c. The inlet 222 and the first hole 241a are respectively located on opposite sides of the blocking component 23 along the extension direction of the first sub-flow channel 2211a, the first hole 241a and the second hole 241b are respectively located on opposite sides of the blocking component 23 along the extension direction of the second sub-flow channel 2211b, and the second hole 241b and the outlet 223 are respectively located on opposite sides of the blocking component 23 along the extension direction of the third sub-flow channel 2211c.

[0158] For example, after the fluid enters the first sub-flow channel 2211a from the inlet 222, the fluid flows in the first sub-flow channel 2211a in a direction away from the blocking component 23 under the blocking of the blocking component 23, flows along the circumference of the containing space 21 in the first sub-flow channel 2211a and approximately circulates the containing space 21 one time, reaches the blocking component 23, and then enters the second sub-flow channel 2211b from the first hole 241a; the fluid flows in the second sub-flow channel 2211b in a direction away from the blocking component 23 under the blocking of the blocking component 23, flows along the circumference of the containing space 21 in the second sub-flow channel 2211b and approximately circulates the containing space 21 one time again, reaches the blocking component 23, and then enters the third sub-flow channel 2211c from the second hole 241b; the fluid flows in the third sub-flow channel 2211c in a direction away from the blocking component 23 under the blocking of the blocking component 23, flows along the circumference of the containing space 21 in the third sub-flow channel 2211c and approximately circulates the containing space 21 one time again, reaches the blocking component 23, and then is output to the external environment from the outlet 223.

[0159] The technical solution above can further prolong the flow path of the fluid in the channel 221 by arranging the first hole 241a and the second hole 241b close to the blocking component 23, thereby further reducing the influence on the external environment when the battery device 2 generates an abnormality.

[0160] FIG. 19 is an exploded structural schematic diagram of another kind of box 20 provided by some embodiments of the present application.

[0161] With continuous reference to FIG. 19, in some embodiments, the blocking component 23 includes a first blocking piece 23a, a second blocking piece 23b, and a third blocking piece 23c. The first blocking piece 23a is arranged in the first sub-flow passage 2211a and separates the first sub-flow passage 2211a along the extension direction of the first sub-flow passage 2211a. The second blocking piece 23b is arranged in the second sub-flow passage 2211b and separates the second sub-flow passage 2211b along the extension direction of the second sub-flow passage 2211b. The third blocking piece 23c is arranged in the third sub-flow passage 2211c and separates the third sub-flow passage 2211c along the extension direction of the third sub-flow passage 2211c.

[0162] Exemplarily, after the fluid enters the first sub-flow passage 2211a from the inlet 222, the fluid flows in the first sub-flow passage 2211a in a direction away from the first blocking piece 23a under the blocking of one side of the first blocking piece 23a, flows in the first sub-flow passage 2211a along the circumference of the containing space 21 and approximately circulates the containing space 21 for one round, reaches the other side of the first blocking piece 23a, and then enters the second sub-flow passage 2211b from the first hole 241a. The fluid flows in the second sub-flow passage 2211b in a direction away from the second blocking piece 23b under the blocking of one side of the second blocking piece 23b, flows in the second sub-flow passage 2211b along the circumference of the containing space 21 and approximately circulates the containing space 21 for one round for the second time, reaches the other side of the second blocking piece 23b, and then enters the third sub-flow passage 2211c from the second hole 241b. The fluid flows in the third sub-flow passage 2211c in a direction away from the third blocking piece 23c under the blocking of one side of the third blocking piece 23c, flows in the third sub-flow passage 2211c along the circumference of the containing space 21 and approximately circulates the containing space 21 for one round for the third time, reaches the other side of the third blocking piece 23c, and then is output to the external environment from the outlet 223.

[0163] Optionally, the first blocking piece 23a, the second blocking piece 23b, and the third blocking piece 23c can have the same structural shape or different structural shapes. The first blocking piece 23a, the second blocking piece 23b, and the third blocking piece 23c can be made of the same material or different materials.

[0164] The technical scheme sets the blocking component 23 as a split structure including the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c, so that the structure or position of the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c can be flexibly adjusted according to different requirements, thereby improving the flexibility and applicability of the blocking component 23.

[0165] In some embodiments, the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c at least partially overlap in the stacking direction of the first sub-flow passage 2211a, the second sub-flow passage 2211b and the third sub-flow passage 2211c. The positions of the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c on the cabinet 20 are substantially the same, which reduces the structural complexity and facilitates maintenance.

[0166] In some embodiments, the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c are provided as an integral structure.

[0167] On the one hand, the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c do not need to be connected through an additional connection process, simplifying the manufacturing process flow. At the same time, compared with connecting the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c through an additional connection process, the first blocking piece 23a, the second blocking piece 23b and the third blocking piece 23c have higher connection firmness as an integral structure.

[0168] In some embodiments, the opening area of the communication hole 241 is 50mm 2 -3000mm 2 .

[0169] For example, the opening area of the communication hole 241 can be, but is not limited to, 50mm 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 , etc.

[0170] The greater the opening area of the communication hole 241, the faster the rate of fluid flowing from one of the multiple layers of sub-flow passages 2211 to another of the multiple layers of sub-flow passages 2211, the shorter the time of fluid flowing in the passage 221, and the worse the improvement effect of the fluid. Meanwhile, the risk of fluid gathering in the passage 221 to cause excessive pressure in the frame 22 is lower. The smaller the opening area of the communication hole 241, the slower the rate of fluid flowing from one of the multiple layers of sub-flow passages 2211 to another of the multiple layers of sub-flow passages 2211, the longer the time of fluid flowing in the passage 221, and the better the improvement effect of the fluid. Meanwhile, the risk of fluid gathering in the passage 221 to cause excessive pressure in the frame 22 is higher.

[0171] Thus, by setting the opening area of the communication hole 241 in the above range, the above technical solution can keep the overall flow time of fluid in the passage 221 within a suitable range, thereby reducing the influence on the external environment when the battery device 2 generates an abnormality while reducing the risk of excessive pressure in the frame 22.

[0172] In some embodiments, the opening area of the communication hole 241 is 200 mm 2 - 1300 mm 2 . The trade-off effect of reducing the influence on the external environment when the battery device 2 generates an abnormality and reducing the risk of excessive pressure in the frame 22 can be further improved.

[0173] For example, the opening area of the communication hole 241 can be, but is not limited to, 200 mm 2 , 250 mm 2 , 300 mm 2 , 350 mm 2 , 400 mm 2 , 450 mm 2 , 500 mm 2 , 550 mm 2 , 600 mm 2 , 650 mm 2 , 700 mm 2 , 750 mm 2 , 800 mm 2 , 850 mm 2 , 900 mm 2 , 950 mm 2 , 1000 mm 2 , 1100 mm 2 , 1200 mm 2 , 1300 mm 2 , etc.

[0174] In some embodiments, the area of the cross section of the sub-flow channel 2211 perpendicular to the extension direction of the sub-flow channel 2211 is 50mm 2 -3000mm 2 .

[0175] As an example, the area of the cross section of the sub-flow channel 2211 perpendicular to the extension direction of the sub-flow channel 2211 can be, but is not limited to, 50mm 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 , etc.

[0176] The larger the area of the cross section of the sub-flow channel 2211 perpendicular to the extension direction of the sub-flow channel 2211, the faster the fluid flows from one layer of the multi-layer sub-flow channel 2211 to another layer of the multi-layer sub-flow channel 2211, the shorter the time the fluid flows in the channel 221, and the worse the improvement effect of the fluid; at the same time, the risk of the fluid gathering in the channel 221 to cause excessive pressure in the frame 22 is also lower. The smaller the area of the cross section of the sub-flow channel 2211 perpendicular to the extension direction of the sub-flow channel 2211, the slower the fluid flows from one layer of the multi-layer sub-flow channel 2211 to another layer of the multi-layer sub-flow channel 2211, the longer the time the fluid flows in the channel 221, and the better the improvement effect of the fluid; at the same time, the risk of the fluid gathering in the channel 221 to cause excessive pressure in the frame 22 is also higher.

[0177] Therefore, by setting the area of the cross section of the sub-flow channel 2211 perpendicular to the extension direction of the sub-flow channel 2211 within the above range, the above technical solution can make the overall flow time of the fluid in the channel 221 within a suitable range, so as to reduce the influence on the external environment when the battery device 2 generates an abnormality, while taking into account reducing the risk of excessive pressure in the frame 22.

[0178] In some embodiments, the area of the cross section of the sub-flow channel 2211 perpendicular to the extension direction of the sub-flow channel 2211 is 200mm 2 -1300mm2 The effects of reducing the influence on the external environment and reducing the risk of excessive pressure in the inner frame 22 when the battery device 2 generates an abnormality can be further improved.

[0179] For example, the area of the cross section of the sub-flow passage 2211 perpendicular to the extension direction of the sub-flow passage 2211 can be, but is not limited to, 200 mm 2 , 250 mm 2 , 300 mm 2 , 350 mm 2 , 400 mm 2 , 450 mm 2 , 500 mm 2 , 550 mm 2 , 600 mm 2 , 650 mm 2 , 700 mm 2 , 750 mm 2 , 800 mm 2 , 850 mm 2 , 900 mm 2 , 950 mm 2 , 1000 mm 2 , 1100 mm 2 , 1200 mm 2 , 1300 mm 2 , and the like.

[0180] Continuing to combine FIGS. 8-9, in some embodiments, the frame 22 includes M beam bodies 25 arranged along the outer periphery of the accommodation space 21 and connected end to end, the inside of each beam body 25 is provided with a cavity 251, the cavities 251 of the M beam bodies 25 are connected to each other to form a channel 221, and M is greater than or equal to 2. The blocking component 23 is arranged at the position where the first beam body 25 and the Mth beam body 25 are connected, and separates the cavity 251 of the first beam body 25 and the cavity 251 of the Mth beam body 25 at the position where the first beam body 25 and the Mth beam body 25 are connected. The inlet 222 is arranged on the first beam body 25, and the outlet 223 is arranged on the Mth beam body 25.

[0181] For example, the M beam bodies 25 are arranged along the outer periphery of the accommodation space 21 and connected end to end, which can be understood as being arranged in sequence along the outer periphery of the accommodation space 21 in a single direction. The single direction can be a clockwise direction or a counterclockwise direction.

[0182] The M beam bodies 25 can be directly connected or indirectly connected through other components. For example, the M beam bodies 25 can be connected by bolt connection, welding, riveting, clamping or bonding, but are not limited thereto. The M can be 2, 3, 4, 5 or 6, but is not limited thereto.

[0183] Optionally, the M beam bodies 25 can have the same structure or different structures. The M beam bodies 25 can be made of the same material or different materials.

[0184] In some examples, the M beam bodies 25 are made of the same material, which can simplify the manufacturing process and reduce costs.

[0185] In some examples, the frame 22 includes four beam bodies 25 arranged along the outer periphery of the accommodation space 21 to form a rectangular frame 22.

[0186] The first beam body 25 and the Mth beam body 25 are adjacent, and the blocking component 23 is arranged at the position where the first beam body 25 and the Mth beam body 25 are connected, that is, the blocking component 23 is connected between the first beam body 25 and the Mth beam body 25. The blocking component 23 can be directly connected between the first beam body 25 and the Mth beam body 25, or the blocking component 23 can be limited between the first beam body 25 and the Mth beam body 25 through other components.

[0187] The above technical solution can reduce the assembly difficulty of the blocking component 23 by arranging the M beam bodies 25 to form the frame 22, thereby reducing the production cost.

[0188] In some embodiments, the frame 22 includes M beam bodies 25 arranged along the outer periphery of the accommodation space 21 and connected end to end, each beam body 25 has a cavity 251 formed therein, the cavities 251 of the M beam bodies 25 are connected to form a channel 221, and M is greater than or equal to 2. The blocking component 23 is arranged at the position where the first beam body 25 and the Mth beam body 25 are connected, and the cavities 251 of the first beam body 25 and the Mth beam body 25 are separated at the position where the first beam body 25 and the Mth beam body 25 are connected. When the number of layers N of the sub-flow channel 2211 is even, the inlet 222 and the outlet 223 are arranged on the first beam body 25. When the number of layers N of the sub-flow channel 2211 is odd, the inlet 222 is arranged on the first beam body 25, and the outlet 223 is arranged on the Mth beam body 25.

[0189] In this way, the flow path and time of the fluid in the channel 221 can be maximized under the condition that the number of layers of the sub-flow channel 2211 is constant.

[0190] In some embodiments, each beam body 25 comprises two end faces 254 opposite along a length direction of the beam body 25, and the M beam bodies 25 are connected end to end through the end faces 254.

[0191] Exemplarily, the cavity 251 extends along the length direction of the beam body 25, and the two end faces 254 of the beam body 25 refer to the end faces 254 of the beam body 25 having the opening of the cavity 251.

[0192] The M beam bodies 25 are directly connected through the end faces 254, which not only improves the assembly efficiency, but also helps to reduce the structural complexity of the battery device 2 as a whole.

[0193] In some embodiments, the beam body 25 comprises a first surface 252 and a second surface 253 opposite along a thickness direction of the beam body 25, and each end face 254 connects the first surface 252 and the second surface 253. The size of the first surface 252 in the length direction is smaller than the size of the second surface 253 in the length direction.

[0194] Exemplarily, the first surface 252 is a side surface of the beam body 25 facing the accommodation space 21, and the second surface 253 is a side surface of the beam body 25 facing away from the accommodation space 21.

[0195] The above technical solution can make the two end faces 254 of the beam body 25 opposite along the length direction of the beam body 25 be inclined, which can reduce the operation difficulty of directly connecting the plurality of beam bodies 25, and help to improve the production efficiency.

[0196] Continuing to combine FIGS. 15-16, in some embodiments, each beam body 25 comprises a beam body 255 and N-1 first reinforcing ribs 256, the cavity 251 is arranged in the beam body 255, and the N-1 first reinforcing ribs 256 are arranged in the cavity 251. The first reinforcing ribs 256 of each adjacent two beam bodies 25 are connected in abutment to form N-1 partition components 24, and the N-1 partition components 24 divide the channel 221 into N layers of sub-flow passages 2211 in a direction intersecting the extension direction of the channel 221. The first reinforcing rib 256 of at least one of the first beam body 25 and the Mth beam body 25 is provided with a communication hole 241. In the sub-flow passage 2211 provided with the inlet 222 or the outlet 223, the communication hole 241 is located at one end of the sub-flow passage 2211 away from the inlet 222 or the outlet 223.

[0197] Exemplarily, the abutment connection of the first reinforcing ribs 256 of the plurality of beam bodies 25 means that after the first reinforcing ribs 256 of the plurality of beam bodies 25 are connected, there is no gap between the first reinforcing ribs 256 of the adjacent two beam bodies 25, so that each layer of sub-flow passages 2211 in the N layers of sub-flow passages 2211 is not communicated at the connection of the plurality of first reinforcing ribs 256.

[0198] The first reinforcing rib 256 can be detachably connected to the inner wall of the beam body 255, or can be integrally arranged 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 can be limited on the inner wall of the beam body 255 by other components. For example, the connection mode of the first reinforcing rib 256 to the inner wall of the beam body 255 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0199] Optionally, the first reinforcing rib 256 can be, but is not limited to, a plate-shaped structure, a block-shaped structure, a columnar structure or a film layer structure.

[0200] Optionally, the first reinforcing rib 256 can be, but is not limited to, made of a metal or a non-metal material. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, and the non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide.

[0201] In some examples, the beam body 255 and the first reinforcing rib 256 are integrally formed. In one aspect, the beam body 255 and the first reinforcing rib 256 do not need to be connected by an additional connection process, simplifying the manufacturing process flow. At the same time, compared with connecting the beam body 255 and the first reinforcing rib 256 by an additional connection process, the beam body 255 and the first reinforcing rib 256 in an integrated structure have higher connection firmness.

[0202] Optionally, the number of the first reinforcing rib 256 of each beam body 25 can be one, two or more, and the number of the first reinforcing rib 256 of each beam body 25 in the plurality of beams is the same.

[0203] The first reinforcing rib 256 of at least one of the first beam body 25 and the Mth beam body 25 is provided with a communication hole 241. It can be understood that the first reinforcing rib 256 of one of the first beam body 25 and the Mth beam body 25 is provided with a communication hole 241, and the first reinforcing rib 256 of the first beam body 25 and the Mth beam body 25 is provided with a communication hole 241.

[0204] The above technical solution connects the first reinforcing rib 256 of the plurality of beam bodies 25 to form the partition component 24, which is beneficial to reduce the preparation difficulty of the frame 22 and reduce the production cost.

[0205] FIG. 20 is a partial exploded structural schematic diagram of another box 20 provided by some embodiments of the present application, and FIG. 21 is a three-dimensional structural schematic diagram of a first sealing member 30 provided by some embodiments of the present application.

[0206] With reference to FIGS. 20-21, in some embodiments, the box 20 further comprises a first sealing member 30 clamped between the first reinforcing ribs 256 of two adjacent beam bodies 25.

[0207] For example, during the process of connecting the M beam bodies 25, the first sealing member 30 is first connected to at least part of the first reinforcing ribs 256, then the beam bodies 255 of the plurality of beam bodies 25 are connected, and the first sealing member 30 is clamped between the first reinforcing ribs 256 of two adjacent beam bodies 25 to seal the gap between the first reinforcing ribs 256 of the two adjacent beam bodies 25.

[0208] The first sealing member 30 can be directly connected between the first reinforcing ribs 256 of two adjacent beam bodies 25, or can be limited between the first reinforcing ribs 256 of two adjacent beam bodies 25 by other components.

[0209] The number of the first sealing members 30 matches the number of the first reinforcing ribs 256. For example, the number of the beam bodies 25 is four, each beam body 25 includes one first reinforcing rib 256, and the number of the first sealing members 30 is four. For another example, the number of the beam bodies 25 is four, each beam body 25 includes two first reinforcing ribs 256, and the number of the first sealing members 30 is eight.

[0210] Optionally, the first sealing member 30 can be, but is not limited to, a sealing gasket, a sealing glue, or a sealing ring, etc., which can be selected according to the actual application environment.

[0211] Optionally, the first sealing member 30 can be, but is not limited to, made of silicone rubber, fluororubber, polytetrafluoroethylene, epoxy resin, or polyurethane, etc.

[0212] The above technical solution can realize the sealing connection of two adjacent beam bodies 25 without welding the first reinforcing ribs 256 of the two adjacent beam bodies 25, thereby reducing the overall manufacturing difficulty, improving the production efficiency, and reducing the cost.

[0213] In some embodiments, the first sealing member 30 comprises a first positioning groove, and the first reinforcing rib 256 is clamped in the first positioning groove.

[0214] FIG. 22 is a partial exploded structural schematic view of another box 20 provided by some embodiments of the present application.

[0215] With continued reference to FIG. 22, in some embodiments, the case 20 further comprises a plurality of connectors 40, the number of the connectors 40 matching the number of the beams 25. Each adjacent two beams 25 are connected by a connector 40, the connector 40 having a cavity 41 inside, the cavities 251 of the plurality of beams 25 being communicated through the cavity 41. The blocking component 23 is arranged at the position where the first beam 25 and the Mth beam 25 are connected by the connector 40.

[0216] For example, the connector 40 can be directly connected with the beam 25, or can be limited on the beam 25 by other components. For example, the connection manner of the connector 40 with the beam 25 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0217] The number of the connectors 40 matches the number of the beams 25. For example, the number of the beams 25 is four, and the number of the connectors 40 is four.

[0218] In some examples, the connector 40 comprises a first part and a second part connected with each other, the first part being connected with one of the adjacent two beams 25, the second part being connected with the other of the adjacent two beams 25, and the first part and the second part form an included angle therebetween, wherein the included angle can be an acute angle, a right angle or an obtuse angle.

[0219] In some examples, the included angle between the first part and the second part is a right angle.

[0220] Optionally, the connector 40 can be, but is not limited to, made of a metal material or a non-metal material. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, and the non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide.

[0221] 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 the production cost.

[0222] The blocking component 23 is arranged at the position where the first beam 25 and the Mth beam 25 are connected by the connector 40. It can be understood that the blocking component 23 is arranged between the first beam 25 and the connector 40, or the blocking component 23 is arranged between the Mth beam 25 and the connector 40, or the blocking component 23 is arranged in the cavity 41 of the connector 40.

[0223] The above technical solution can effectively reduce the connection difficulty between the plurality of beams 25 by introducing the connector 40 to connect the adjacent two beams 25, so as to further improve the production efficiency and reduce the cost of the battery device 2 as a whole.

[0224] Fig. 23 is a partial exploded view of another case 20 according to some embodiments of the present application, and Fig. 24 is a perspective view of the beam 25 and the connector 40 of a battery device 2 according to some embodiments of the present application.

[0225] With continued reference to Figs. 23 and 24, in some embodiments, the beam 25 includes a beam body 255 and N-1 first reinforcing ribs 256, and the cavity 251 is provided in the beam body 255 and the N-1 first reinforcing ribs 256 are provided in the cavity 251. The connector 40 includes a connecting body 42 and N-1 second reinforcing ribs 43, and the connecting body 42 connects the beam bodies 255 of two adjacent beams 25, the cavity 41 is provided in the connecting body 42, and the N-1 second reinforcing ribs 43 are provided in the cavity 41. Each second reinforcing rib 43 abuts the first reinforcing ribs 256 of the two adjacent beams 25 to form N-1 partition components 24, and the N-1 partition components 24 divide the channel 221 into N layers of sub-channels 2211 in a direction intersecting the extension direction of the channel 221. The first reinforcing ribs 256 of at least one of the first beam 25 and the Mth beam 25 are provided with a communication hole 241. In the sub-channel 2211 provided with the inlet 222 or the outlet 223, the communication hole 241 is located at the end of the sub-channel 2211 away from the inlet 222 or the outlet 223.

[0226] By way of example, the abutment of the second reinforcing rib 43 with the first reinforcing ribs 256 of the two adjacent beams 25 means that, after the second reinforcing rib 43 is connected with the first reinforcing ribs 256 of the two adjacent beams 25, there is no gap between the second reinforcing rib 43 and the first reinforcing ribs 256, so that the layers of sub-channels 2211 in the N layers of sub-channels 2211 are not communicated at the connection between the second reinforcing rib 43 and the first reinforcing ribs 256.

[0227] The second reinforcing rib 43 can be detachably connected to the inner wall of the connecting body 42, or can be integrally provided 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 can be limited on the inner wall of the connecting body 42 by other components. By way of example, the connection mode of the second reinforcing rib 43 with the inner wall of the connecting body 42 can be, but is not limited to, bolt connection, welding, riveting, clamping or adhesion, etc.

[0228] Optionally, the second reinforcing rib 43 can be, but is not limited to, a plate-shaped structure, a block-shaped structure, a columnar structure or a film layer structure, etc.

[0229] Optionally, the second reinforcing rib 43 can be made of, but not limited to, a metal or a non-metal material. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc. The non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0230] In some examples, the connecting body 42 and the second reinforcing rib 43 are integrally formed. In one aspect, the connecting body 42 and the second reinforcing rib 43 are connected without an additional connection process, which simplifies the manufacturing process flow. Meanwhile, compared with connecting the connecting body 42 and the second reinforcing rib 43 through an additional connection process, the connecting body 42 and the second reinforcing rib 43 in an integrated structure have higher connection firmness.

[0231] Optionally, the number of the second reinforcing rib 43 in each connecting piece 40 can be one, two, or more, and the number of the second reinforcing rib 43 matches the number of the first reinforcing rib 256. As an example, the number of the beam body 25 is four, each beam body 25 includes one first reinforcing rib 256, and the number of the connecting piece 40 is four, each connecting piece 40 includes one second reinforcing rib 43. As another example, the number of the beam body 25 is four, each beam body 25 includes two first reinforcing ribs 256, and the number of the connecting piece 40 is four, each connecting piece 40 includes two second reinforcing ribs 43.

[0232] The above technical solution can further reduce the connection difficulty between the first reinforcing ribs 256 of the plurality of beam bodies 25 by arranging the second reinforcing rib 43 to connect the first reinforcing ribs 256 of the adjacent two beam bodies 25, so as to further improve the production efficiency of the battery device 2 as a whole and reduce the cost.

[0233] In addition, in the sub-flow passage 2211 provided with the inlet 222 or the outlet 223, the communication hole 241 is located at one end of the sub-flow passage 2211 away from the inlet 222 or the outlet 223, which can further prolong the flow path of the fluid in the passage 221, so as to further reduce the influence on the external environment when the battery device 2 generates an abnormality.

[0234] FIG. 25 is a partial exploded structural schematic diagram of another box 20 provided by some embodiments of the present application, and FIG. 26 is a three-dimensional structural schematic diagram of a second sealing piece 50 provided by some embodiments of the present application.

[0235] Continuing to refer to FIGS. 25 and 26, in some embodiments, the box 20 further includes the second sealing piece 50, which is connected between the second reinforcing rib 43 and the first reinforcing rib 256.

[0236] Exemplarily, in the process of connecting the second reinforcing rib 43 with the first reinforcing rib 256, the second sealing member 50 is 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 with the connecting body 42 of the connecting member 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.

[0237] The second sealing member 50 can be directly connected between the second reinforcing rib 43 and the first reinforcing rib 256, or can be limited between the second reinforcing rib 43 and the first reinforcing rib 256 by other components.

[0238] The number of the second sealing member 50 matches the number of the first reinforcing rib 256. As an example, the number of the beam body 25 is four, each beam body 25 includes one first reinforcing rib 256, and the number of the second sealing member 50 is four. As another example, the number of the beam body 25 is four, each beam body 25 includes two first reinforcing ribs 256, and the number of the second sealing member 50 is eight.

[0239] Optionally, the second sealing member 50 can be, but is not limited to, a sealing gasket, a sealing glue, or a sealing ring, etc., which can be selected according to the actual application environment.

[0240] Optionally, the second sealing member 50 can be, but is not limited to, made of materials such as silicone rubber, fluororubber, polytetrafluoroethylene, epoxy resin, or polyurethane, etc.

[0241] The above technical solution can realize the sealed connection of the second reinforcing rib 43 and the first reinforcing rib 256 without welding, so as to reduce the overall preparation difficulty, improve the production efficiency and reduce the cost.

[0242] In some embodiments, the second sealing member 50 includes a second positioning groove, and at least one of the first reinforcing rib 256 and the second reinforcing rib 43 is clamped in the second positioning groove.

[0243] FIG. 27 is a perspective structural schematic view of another battery device 2 provided by some embodiments of the present application.

[0244] Continuing to refer to FIG. 27, in some embodiments, the battery device 2 further includes a pressure relief mechanism 60, which is communicated with the outlet 223.

[0245] The pressure relief mechanism 60 is used to release the internal pressure when the internal pressure or temperature of the frame 22 reaches a threshold value. 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 value, the pressure relief mechanism 60 is opened to allow the fluid in the channel 221 to be discharged to the outside of the battery device 2.

[0246] The pressure relief mechanism 60 can be detachably connected to the frame 22, or can be integrally arranged on the frame 22. The pressure relief mechanism 60 can be directly connected to the frame 22, or can be limited on the frame 22 by other components. For example, the connection mode of the pressure relief mechanism 60 and the frame 22 can be, but is not limited to, bolt connection, riveting, bonding or clamping.

[0247] In some examples, the pressure relief mechanism 60 and the frame 22 are an integral structure, and the frame 22 is provided with a weak part, the thickness of the weak part is less than the thickness of other areas on the frame 22, and the pressure relief mechanism 60 is formed by the weak part and the area surrounded by the weak part.

[0248] The above technical solution sets the pressure relief mechanism 60 at the outlet 223, so that the fluid in the channel 221 can be discharged to the outside of the battery device 2 only when it reaches a certain condition, thereby reducing unnecessary fluid discharge, and further reducing the influence on the external environment.

[0249] According to some embodiments of the present application, the present application also provides a power utilization device, which comprises the battery device 2 of any one of the above-mentioned embodiments, and the battery device 2 is used to provide electric energy.

[0250] If not specifically stated, all embodiments and optional embodiments of the present application can be combined to form new technical solutions. All technical features and optional technical features of the present application can be combined to form new technical solutions.

[0251] In order to better understand the battery device 2 provided by the embodiments of the present application, based on the same inventive concept, the above-mentioned battery device 2 in practical application is provided for description.

[0252] The embodiment of the present application provides a battery device 2, the battery device 2 includes battery monomer 10 and box 20, the box 20 includes containing space 21 and frame 22, the battery monomer 10 is contained in containing space 21, frame 22 is set along the outer periphery of containing space 21, the inside of frame 22 is provided with passageway 221, and passageway 221 is surrounded in the outer periphery of containing space 21. Wherein, frame 22 is also provided with inlet 222 and outlet 223, inlet 222 is connected containing space 21 and passageway 221, outlet 223 is connected passageway 221 and the outside of box 20. Passageway 221 is also provided with blocking component 23, blocking component 23 divides passageway 221 into the flow path that is connected inlet 222 and outlet 223 and approximately surrounds containing space 21.

[0253] The blocking component 23 of the above technical solution can block the flow of fluid, can provide the flow path that approximately surrounds containing space 21 for the fluid flowing from inlet 222 to outlet 223, thereby prolonging the flow path and time of fluid in passageway 221. So that the fluid can effectively reduce its temperature in passageway 221, and the impurities such as metal particles doped in the fluid can better precipitate in passageway 221, so as to reduce the risk of damaging other components located outside the battery device 2 and the risk of causing greater pollution to the environment after the fluid is discharged to the outside of the battery device 2. In this way, the influence of the battery device 2 on the external environment when an abnormality occurs can be effectively reduced.

[0254] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0255] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, comprising: a battery cell; a case including a receiving space in which the battery cell is received and a frame provided along an outer periphery of the receiving space, an inner portion of the frame being provided with a passage that surrounds an outer periphery of the receiving space; wherein the frame is further provided with an inlet and an outlet, the inlet connecting the receiving space and the passage, and the outlet connecting the passage and an outside of the case; the passage is further provided with a blocking member that divides the passage into a flow path connecting the inlet and the outlet and substantially surrounding the receiving space.

2. The battery device of claim 1, wherein, the case further includes a partition member provided in the passage and dividing the passage into N layers of sub-flow passages in a direction intersecting an extension direction of the passage, the inlet and the outlet being provided corresponding to different layers of the sub-flow passages, N being greater than or equal to 2; the partition member is provided with a communication hole, and two adjacent layers of the sub-flow passages are communicated through the communication hole.

3. The battery device of claim 2, wherein, the flow path substantially surrounds the receiving space N times.

4. The battery device according to claim 2 or 3, wherein the partition member includes a first partition piece and a second partition piece, the first partition piece and the second partition piece being spaced apart in the direction intersecting the extension direction of the passage and dividing the passage into a first sub-flow passage, a second sub-flow passage and a third sub-flow passage that are stacked in the direction intersecting the extension direction of the passage, the second sub-flow passage being located between the first sub-flow passage and the third sub-flow passage; the communication hole includes a first hole and a second hole, the first hole being provided in the first partition piece, the first sub-flow passage and the second sub-flow passage being communicated through the first hole, the second hole being provided in the second partition piece, the second sub-flow passage and the third sub-flow passage being communicated through the second hole; the inlet is provided corresponding to one of the first sub-flow passage and the third sub-flow passage, and the outlet is provided corresponding to the other of the first sub-flow passage and the third sub-flow passage.

5. The battery device of claim 4, wherein, the first partition piece and the second partition piece are spaced apart along a height of the case, the first sub-flow passage is located at a bottom of the case, and the third sub-flow passage is located at a top of the case; the inlet is provided corresponding to the first sub-flow passage, and the outlet is provided corresponding to the third sub-flow passage.

6. The battery device of claim 4, wherein, the first hole and the second hole are both provided close to the blocking member, the inlet is provided corresponding to the first sub-flow passage, and the outlet is provided corresponding to the third sub-flow passage; the inlet and the first hole are respectively located on two sides of the blocking member opposite in an extension direction of the first sub-flow passage, the first hole and the second hole are respectively located on two sides of the blocking member opposite in an extension direction of the second sub-flow passage, and the second hole and the outlet are respectively located on two sides of the blocking member opposite in an extension direction of the third sub-flow passage.

7. The battery device of claim 6, wherein, the blocking member includes a first blocking piece, a second blocking piece and a third blocking piece, the first blocking piece being provided in the first sub-flow passage and dividing the first sub-flow passage in the extension direction of the first sub-flow passage. The second barrier is arranged in the second sub-flow channel and separates the second sub-flow channel along the extension direction of the second sub-flow channel; The third barrier is arranged in the third sub-flow channel and separates the third sub-flow channel along the extension direction of the third sub-flow channel.

8. The battery device of claim 7, wherein, The first barrier, the second barrier and the third barrier at least partially overlap in the stacking direction of the first sub-flow channel, the second sub-flow channel and the third sub-flow channel; or, The first barrier, the second barrier and the third barrier are arranged as a whole.

9. The battery device of any one of claims 2-8, wherein, The opening area of the communication hole is 50mm 2 -3000mm 2 .

10. The battery device of claim 9, wherein, The opening area of the communication hole is 200mm 2 -1300mm 2 .

11. The battery device of any one of claims 2-8, wherein, An area of a cross section of the sub-flow passage in a direction perpendicular to an extension direction of the sub-flow passage is 50 mm 2 - 3000 mm 2 .

12. The battery device of claim 11, wherein, An area of a cross section of the sub-flow passage in a direction perpendicular to an extension direction of the sub-flow passage is 200 mm 2 - 1300 mm 2 .

13. The battery device of any one of claims 1-12, wherein, The frame comprises M beam bodies, the M beam bodies are arranged along the outer periphery of the accommodation space and connected end to end, a cavity is formed in the interior of each beam body, and the cavities of the M beam bodies are connected to form the channel, and M is greater than or equal to 2; The barrier component is arranged at the position where the first beam body and the Mth beam body are connected, and separates the cavity of the first beam body and the cavity of the Mth beam body at the position where the first beam body and the Mth beam body are connected; The inlet is arranged on the first beam body, and the outlet is arranged on the Mth beam body.

14. The battery device of any one of claims 2-12, wherein, The frame comprises M beam bodies, the M beam bodies are arranged along the outer periphery of the accommodation space and connected end to end, a cavity is formed in the interior of each beam body, and the cavities of the M beam bodies are connected to form the channel, and M is greater than or equal to 2; The barrier component is arranged at the position where the first beam body and the Mth beam body are connected, and separates the cavity of the first beam body and the cavity of the Mth beam body at the position where the first beam body and the Mth beam body are connected; In the case where the number N of layers of the sub-flow channel is even, the inlet and the outlet are arranged on the first beam body; In the case where the number N of layers of the sub-flow channel is odd, the inlet is arranged on the first beam body, and the outlet is arranged on the Mth beam body.

15. The battery device according to claim 13 or 14, wherein Each beam body comprises two end faces opposite in the length direction of the beam body, and the M beam bodies are connected end to end through the end faces.

16. The battery device of claim 14, wherein, Each beam body comprises a beam main body and N-1 first reinforcing ribs, the cavity is arranged in the beam main body, and the N-1 first reinforcing ribs are arranged in the cavity; The first reinforcing ribs of each adjacent two beam bodies are connected in abutment to form N-1 separation components, and the N-1 separation components separate the channel into N layers of sub-flow channels along a direction intersecting the extension direction of the channel; The first reinforcing rib of at least one of the first beam body and the Mth beam body is provided with the communication hole; In the sub-flow channel provided with the inlet or the outlet, the communication hole is located at the end of the sub-flow channel away from the inlet or the outlet.

17. The battery device of claim 16, wherein, The box further comprises a first sealing member clamped between the first reinforcing ribs of the adjacent two beam bodies.

18. The battery device of claim 13, wherein, The box further comprises a plurality of connecting members, and the number of the connecting members matches the number of the beam bodies. Each two adjacent beam bodies are connected by the connecting member, and a cavity is formed in the connecting member, and the cavities of the plurality of beam bodies are communicated through the cavity; The blocking member is arranged at the position where the first beam body and the Mth beam body are connected by the connecting member.

19. The battery device of claim 14, wherein, The box further comprises a plurality of connecting members, and the number of the connecting members matches the number of the beam bodies; Each two adjacent beam bodies are connected by the connecting member, and a cavity is formed in the connecting member, and the cavities of the plurality of beam bodies are communicated through the cavity; The blocking member is arranged at the position where the first beam body and the Mth beam body are connected by the connecting member.

20. The battery device of claim 19, wherein, The beam body comprises a beam main body and N-1 first reinforcing ribs, the cavity is arranged in the beam main body, and N-1 first reinforcing ribs are arranged in the cavity; The connecting member comprises a connecting main body and N-1 second reinforcing ribs, the connecting main body connects the beam main bodies of two adjacent beam bodies, the cavity is arranged in the connecting main body, and N-1 second reinforcing ribs are arranged in the cavity; Each second reinforcing rib is connected to the first reinforcing rib of two adjacent beam bodies to form N-1 separating members, and the separating members divide the channel into N layers of sub-flow passages along a direction intersecting the extension direction of the channel; The first reinforcing rib of at least one of the first beam body and the Mth beam body is provided with the communication hole; In the sub-flow passage provided with the inlet or the outlet, the communication hole is located at the end of the sub-flow passage away from the inlet or the outlet.

21. The battery device of claim 20, wherein, The box further comprises a second sealing member connected between the second reinforcing rib and the first reinforcing rib.

22. The battery device of any one of claims 1-21, wherein, The battery device further comprises a pressure relief mechanism communicated with the outlet.

23. A power utilization device comprising the battery device according to any one of claims 1-22, wherein the battery device is used for storing or providing electric energy.

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