Battery device and electric appliance
By setting up a beam structure inside the battery box to divide the accommodating cavity into multiple sub-cavities and connecting ports, the problem of insufficient energy density of the battery device is solved, and space utilization is maximized and collision resistance is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2026-04-10
- Publication Date
- 2026-06-26
Smart Images
Figure CN224417940U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical appliance. Background Technology
[0002] With the widespread use of new energy vehicles, people's demand for their driving range is constantly increasing. As the power supply component of new energy vehicles, the battery has become a crucial factor affecting their driving range.
[0003] Therefore, how to improve the energy density of battery devices is an urgent problem to be solved in battery technology. Utility Model Content
[0004] The main objective of this application is to provide a battery device and an electrical appliance designed to improve the energy density of the battery device.
[0005] To achieve the above objectives, the battery device proposed in this application includes:
[0006] The battery box has a housing cavity inside.
[0007] At least one beam structure is disposed within the accommodating cavity and extends along a first direction, the beam structure dividing the accommodating cavity into at least two sub-cavities and at least one connecting port;
[0008] At least two sub-cavities are arranged along a second direction, which intersects with the first direction;
[0009] At least one beam structure is formed as a first beam, and two adjacent sub-cavities separated by the first beam are connected by at least one connecting port; and
[0010] A battery cell assembly is located within a cavity. The battery cell assembly includes multiple battery cells, some of which are located in a sub-cavity and others in a connecting port.
[0011] The battery device in this application uses a beam structure to divide the accommodating cavity into at least two sub-cavities and at least one connecting port. The at least one beam structure is formed as a first beam, allowing the two sub-cavities located on either side of the first beam to connect through the at least one connecting port. In this case, multiple battery cells in the battery cell assembly can be arranged not only within the sub-cavities but also within the connecting port. This utilizes the space within the connecting port, expanding the space available for arranging the battery cells and thus improving the energy density of the battery device.
[0012] In some embodiments, at least a portion of the first beam includes at least two sequentially spaced sub-segments in a first direction, with each pair of adjacent sub-segments forming a communication opening.
[0013] Therefore, by setting at least part of the first beam as a split type including at least two sub-segments, the position and number of the connecting ports can be set more flexibly and diversely, so as to be set and used according to different scenario requirements.
[0014] In some embodiments, in at least two sub-segments, the two sub-segments located at both ends along a first direction are defined as end segments;
[0015] The battery box has two opposing first box walls in a first direction, and at least one end segment is connected to the adjacent first box wall;
[0016] Therefore, by connecting at least one end segment to the adjacent first box wall, the first beam can be connected to the first box wall at at least one end in the first direction, thereby facilitating the first beam to support the first box wall and play an anti-collision role in the first direction, thus improving the protection effect of the battery device.
[0017] In some embodiments, in at least two sub-segments, the two sub-segments located at both ends along a first direction are defined as end segments;
[0018] The battery box has two opposing first boxes in a first direction, and at least one end segment is spaced apart from the adjacent first boxes to enclose and form a communication opening.
[0019] This allows for an increase in the number of connection ports, enabling more battery cells to be arranged, which in turn helps to further improve the energy density of the battery device.
[0020] In some embodiments, the battery box has two opposing first boxes in a first direction, and at least one end of at least a portion of the first beam is spaced apart from the adjacent first boxes at both ends in the first direction to enclose and form a communication opening.
[0021] Therefore, the first beam can be a long, integrated strip in the first direction, with relatively small components, making it convenient to install and arrange the first beam.
[0022] In some embodiments, the number of first beams is at least two, and the at least two first beams are arranged at intervals along the second direction.
[0023] This allows for the placement of the first beam at multiple points in the second direction, thereby enhancing the overall rigidity of the battery device and providing collision resistance in the first direction.
[0024] In some embodiments, the connecting openings formed by different first beams are correspondingly arranged in the second direction.
[0025] This allows for a more regular shape inside the battery box, enabling the orderly stacking and arrangement of individual battery cells, thus improving the convenience of battery cell installation and arrangement.
[0026] In some embodiments, some battery cells are arranged sequentially along the second direction to form a first battery pack, and some battery cells are also arranged sequentially along the second direction to form a second battery pack.
[0027] The individual cells in the first battery pack are distributed at the connecting port and the part in the sub-cavity corresponding to the connecting port;
[0028] The individual cells in the second battery pack are located in the part of the sub-cavity that is misaligned with the connecting port.
[0029] Therefore, the width of the first beam in the second direction can be adapted to the thickness direction of the battery cell, so that the width of the first beam does not need to be large, which can reduce the space occupied in the battery box and further improve the energy density of the battery device.
[0030] In some embodiments, a single battery cell has two small faces facing each other in a first direction and two large faces facing each other in a second direction;
[0031] The area of the larger surface is greater than that of the smaller surface, and the first beam is located between the two larger surfaces of two adjacent battery cells.
[0032] Therefore, placing the first beam between the two large surfaces of two adjacent battery cells allows the width of the first beam to match the thickness of the battery cell, eliminating the need for a large width and reducing the space occupied within the battery box. Furthermore, since the expansion force generated by the battery cell during operation is mainly perpendicular to the large surface, the first beam can also intersect with the direction of the expansion force of the battery cell, thus resisting the expansion of the battery cell.
[0033] In some embodiments, the battery box has a second box wall located on one side of the beam structure and the battery cell assembly in a third direction, the third direction intersecting the first direction and the second direction, and the first beam and the battery cell are connected to the second box wall.
[0034] Therefore, since the second box wall has a large contact area with the first beam and the battery cell, it is beneficial to improve the convenience of the installation and arrangement of the first beam and the battery cell, as well as the stability of the connection.
[0035] In some embodiments, the first beam has an enclosing wall in a first direction, the enclosing wall being configured to enclose and form a communication opening;
[0036] The distance between the side of the enclosing wall away from the second box wall and the battery cell located in the communication opening is greater than the distance between the side of the enclosing wall closer to the second box wall and the battery cell located in the communication opening.
[0037] Therefore, when the first beam connects to the lower second box wall, after the battery device is impacted and compressed in the first direction, the lower side of the first beam is less prone to deformation because it is fixed, while only the upper side of the first beam is relatively easy to deform. Therefore, the distance between the upper side of the enclosing wall and the battery cell located within the connecting opening is set to be greater than the distance between the lower side of the enclosing wall and the battery cell located within the connecting opening, allowing for deformation space between the upper side of the enclosing wall and the battery cell, thereby reducing the possibility of compression damage to the battery cell.
[0038] In some embodiments, the enclosing wall surface is a curved surface;
[0039] Alternatively, the enclosing wall is a plane that intersects with but is not perpendicular to the first direction;
[0040] Alternatively, a clearance notch may be provided on the side of the enclosing wall away from the second box wall, and the clearance notch may penetrate the first beam on both sides in the second direction.
[0041] Therefore, setting the enclosing wall surface as an arc surface or a plane intersecting but not perpendicular to the first direction can simplify the structure of the enclosing wall surface and improve manufacturing convenience. A clearance notch is provided on the upper side of the enclosing wall surface to facilitate the formation of the required deformation space between the upper side of the enclosing wall surface and the battery cell, while the lower side ensures the connection area with the second casing wall.
[0042] In some embodiments, in a first direction, a first buffer and / or energy-absorbing element is provided between the first beam and the battery cell located in the communication port.
[0043] Therefore, the first buffer and / or energy-absorbing element can buffer and absorb the impact on the battery device in the first direction, thereby improving the protection of the battery cells.
[0044] In some embodiments, in the second direction, the first beam has a second buffer between it and the opposite battery cell.
[0045] Therefore, the second buffer can buffer the compression between the two, reduce the possibility of damage to the battery cells, and improve the protection of the battery cells.
[0046] In some embodiments, the battery box has two opposing first box walls in a first direction, and the battery device further includes a reinforcing frame connected to the first box walls, and at least one end of the first beam in the first direction is connected to the reinforcing frame;
[0047] On the projection plane perpendicular to the first direction, a portion of the projection of the reinforcing frame is located outside the projection of the first beam.
[0048] Therefore, by strengthening the beam, the connection area with the first box wall can be increased, which in turn helps to improve the stability of the connection between the first beam and the first box wall, so as to stably resist collisions.
[0049] In some embodiments, the first beam has a cavity.
[0050] This reduces the amount of material used, thus improving the lightweight effect of the first beam; at the same time, it also reduces manufacturing costs.
[0051] In some embodiments, the first beam has an enclosing wall configured to enclose and form a communication opening;
[0052] The cavity extends along the first direction and penetrates the enclosing wall;
[0053] The battery assembly also includes a cover plate, which is disposed on the enclosing wall and covers the opening of the cavity.
[0054] Therefore, by extending the cavity along the first direction and penetrating the enclosing wall, the cavity is made open, which improves manufacturing convenience. Furthermore, by covering it with the sealing plate, the contact area with the battery cells located in the communication opening can be increased, thereby reducing the possibility of stress concentration causing pressure damage to the battery cells and improving the protection of the battery cells.
[0055] In some embodiments, the battery device further includes a mounting bracket connected to the first beam;
[0056] The mounting component extends along a third direction and penetrates the battery box to the outside of the receiving cavity, with the third direction intersecting the first and second directions.
[0057] Therefore, by directly using the first beam to set up the mounting components, there is no need to occupy additional space in the sub-cavity, which will not affect the arrangement of the battery cells and facilitates the improvement of the energy density of the battery device.
[0058] On the other hand, the electrical equipment proposed in this application includes the battery device in any of the above embodiments. Attached Figure Description
[0059] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0060] Figure 1 This is a schematic diagram of the structure of one embodiment of the vehicle of this application;
[0061] Figure 2 This is an exploded structural diagram of an embodiment of the battery device of this application;
[0062] Figure 3 This is an exploded structural diagram of a single battery cell according to an embodiment of this application;
[0063] Figure 4 This is a schematic diagram of the battery device according to an embodiment of the present application with the lid removed;
[0064] Figure 5 for Figure 4 Exploded view of the battery device;
[0065] Figure 6 for Figure 5 Schematic diagram of the middle box structure;
[0066] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle;
[0067] Figure 8 for Figure 7 A cross-sectional view of the first beam in the middle;
[0068] Figure 9 This is a schematic diagram of the exploded structure of the first beam and the cover plate in section 7;
[0069] Figure 10 This is a structural schematic diagram of another embodiment of the first beam.
[0070] Figure 11 This is a structural schematic diagram of another embodiment of the housing in this application;
[0071] Figure 12 for Figure 11 A cross-sectional schematic diagram of the first beam in the middle;
[0072] Figure 13 This is a schematic diagram of another embodiment of the battery device of this application with the lid removed;
[0073] Figure 14 for Figure 13 Another perspective view of the box;
[0074] Figure 15 A schematic diagram of the casing of another embodiment of the battery device of this application.
[0075] Explanation of icon numbers:
[0076] 100. Battery assembly; 1. Battery box; 1a. Receiving cavity; 1a1. Sub-cavity; 1a3. Connecting port; 11. Box cover; 12. Box body; 121. First box wall; 123. Second box wall; 20A. Battery cell assembly; 20. Battery cell; 21. End cap; 21a. Terminal post; 22. Housing; 221. Large surface; 223. Small surface; 23. Electrode assembly; 231. Tab; 20B. Battery pack; 20B1. First battery Group; 20B3, Second battery pack; 30, Beam structure; 31, First beam; 311, Sub-segment body; 313, End segment body; 315, Enclosing wall; 316, Avoidance gap; 317, Cavity; 40, First buffer; 50, Second buffer; 60, Reinforcing frame; 70, Cover plate; 80, Mounting component; 200, Controller; 300, Motor; 1000, Vehicle; X, First direction; Y, Second direction; Z, Third direction.
[0077] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0078] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0079] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0080] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0081] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0082] A battery device, or energy storage device, is widely used not only in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in other fields. A battery device may include a battery box and individual battery cells housed within the battery box. The battery box may include a box body and a cover that fits over the box body to enclose a cavity containing the individual battery cells. The individual battery cell is the smallest unit comprising a battery, typically including a casing and an electrode assembly housed within the casing. The electrode assembly is the component in the individual battery cell where the electrochemical reaction actually occurs, and may include a positive electrode, a negative electrode, and a separator located between them, formed by winding or stacking the positive electrode, negative electrode, and separator. Furthermore, at least two individual battery cells within the battery box may be connected in series, in parallel, or in a hybrid connection including both series and parallel connections.
[0083] Furthermore, some battery devices in related technologies incorporate beam structures within the battery box to provide impact resistance and enhance the overall rigidity of the battery device. However, these beam structures typically span opposite sides of the battery device, significantly occupying internal space within the battery box. This is particularly true when multiple beam structures are arranged to provide impact resistance and enhance overall rigidity at multiple points, resulting in substantial space loss and impacting the battery device's energy density.
[0084] Therefore, based on the above considerations, in order to improve the energy density of the battery device, this application proposes a novel battery device. This battery device innovatively uses a beam structure to divide the accommodating cavity within the battery box into at least two sub-cavities and at least one connecting port. The at least one beam structure is formed as a first beam, and the two adjacent sub-cavities separated by the first beam can be connected through at least one connecting port, allowing individual battery cells to be arranged within the sub-cavities and the connecting port, thereby improving the energy density of the battery device.
[0085] Furthermore, it should be noted that the battery device proposed in this application can be applied to electrical devices. These electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Further, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.
[0086] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.
[0087] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.
[0088] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
[0089] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a battery case 1 and a battery cell assembly 20A; the battery case 1 has a receiving cavity 1a, and the battery cell assembly 20A is disposed inside the battery case 1.
[0090] The battery box 1 can be used to form a receiving cavity 1a to provide a receiving space for the battery cell assembly 20A. The battery box 1 can adopt various structures. In some embodiments, the battery box 1 can include a cover 11 and a body 12 that overlap each other to jointly define the receiving cavity 1a for receiving the battery cell assembly 20A. In this case, the body 12 can provide receiving and support for the battery cell assembly 20A. In addition, both the cover 11 and the body 12 can be hollow structures with an opening on one side. In this case, the opening side of the cover 11 can cover the opening side of the body 12. Of course, the cover 11 can also be a plate structure and cover the opening side of the body 12. In addition, the battery box 1 formed by the cover 11 and the body 12 can be of various shapes, such as a cylinder, a cuboid, etc. Furthermore, the cover 11 and the body 12 can be arranged along a first direction X.
[0091] The battery cell assembly 20A may include multiple battery cells 20, where each battery cell 20 is the smallest unit constituting the battery device 100. These multiple battery cells 20 may be connected in series, in parallel, or in a mixed configuration, where some battery cells 20 are connected in series and others in parallel. Furthermore, multiple battery cells 20 may be arranged in one direction to form a battery pack 20B. The battery device 100 may include only one battery pack 20B, or it may include at least two battery packs 20B arranged side-by-side, such as a first battery pack 20B1 and a second battery pack 20B3 as described below.
[0092] In addition, the battery device 100 may include other structures, such as busbars, for electrical connection between multiple battery cells 20. Furthermore, each battery cell 20 may be a secondary or primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, cuboid, or other shapes.
[0093] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a battery cell 20 provided in some embodiments of this application. The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.
[0094] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, giving battery cell 20 higher structural strength and improving reliability. Functional components such as terminals 21a can be provided on end cap 21. Terminals 21a can be used to electrically connect to electrode assembly 23 for outputting or inputting electrical energy into battery cell 20. In some embodiments, end cap 21 can also be provided with an explosion-proof valve for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical components inside the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.
[0095] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.
[0096] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode plates, and typically a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode plates without active material each constitute a tab 231. The positive and negative tabs may be located together at one end of the main body or at opposite ends of the main body. During the charging and discharging process of the battery device 100, the positive and negative active materials react with the electrolyte, and the tabs 231 connect to the terminals 21a to form a current loop.
[0097] Please refer to the reference. Figures 4 to 6 In one embodiment of this application, the battery device 100 further includes at least one beam structure 30, which is disposed within the accommodating cavity 1a and extends along a first direction X. The beam structure 30 divides the accommodating cavity 1a into at least two sub-cavities 1a1 and at least one connecting port 1a3. The at least two sub-cavities 1a1 are arranged along a second direction Y, which intersects the first direction X. The at least one beam structure 30 is formed as a first beam 31, and two adjacent sub-cavities 1a1 separated by the first beam 31 are connected through at least one connecting port 1a3. Some of the battery cells 20 are located in the sub-cavities 1a1, and some of the battery cells 20 are located in the connecting ports 1a3.
[0098] The beam structure 30 can be a strip-shaped structure extending along the first direction X, at least to improve the overall rigidity of the battery device 100. When the two ends of the beam structure 30 in the first direction X are connected to the battery box 1, the beam structure 30 can also play a collision-resistant role in the first direction X, so as to improve the protection of the battery device 100. The number of beam structures 30 can be one, dividing the accommodating cavity 1a into two sub-cavities 1a1. Of course, the number of beam structures 30 can also be two, three, or more, arranged side by side in the second direction Y, to divide the accommodating cavity 1a into three or more sub-cavities 1a1. This application does not limit the number of beam structures 30. Furthermore, when the battery device 100 is in a normal installation and use state, the first direction X can be a horizontal direction, and the second direction Y can be another intersecting horizontal direction. Of course, in other embodiments, the first direction X can also be a vertical direction or other directions. This application does not limit the specific direction type of the first direction X and the second direction Y. Furthermore, since the battery box 1 of the battery device 100 typically includes a box body 12 and a box cover 11, both the battery cells 20 and the beam structure 30 can be conveniently and centrally installed within the box body 12 for easy installation. Additionally, the beam structure 30 can be connected to a first box wall 121 in the box body 12 along a first direction X, or it can be connected to a second box wall 123 in the box body 12 along a third direction Z, which intersects the first direction X and the second direction Y. This application does not limit the specific connection objects of the beam structure 30. Furthermore, the beam structure 30 can be a hollow structure with a cavity 317 to improve weight reduction. Of course, the beam structure 30 can also be a solid structure.
[0099] The first beam 31 can be formed by a beam structure 30 located between two sub-cavities 1a1 connected by a connecting port 1a3. Therefore, it can also be said that the connecting port 1a3 is formed by the first beam 31 separating and enclosing them. Alternatively, only a portion of the beam structure 30 can be formed as the first beam 31. In this case, some adjacent sub-cavities 1a1 are connected through the connecting port 1a3, while some adjacent sub-cavities 1a1 are not connected through the connecting port 1a3. Of course, all beam structures 30 can also be formed as the first beam 31. In this case, any two adjacent sub-cavities 1a1 can be connected through the connecting port 1a3. Furthermore, the connecting port 1a3 can be formed by enclosing the spaced sub-segments 311 within the first beam 31, as described below. Alternatively, it can be formed by the first beam 31 and a first box wall 121 that is relatively spaced in the first direction X. Furthermore, the connection opening 1a3 formed by the spaced sub-segments 311 can be either formed by the first beam 31 and the spaced first box wall 121, or a combination of both. Additionally, the connection opening 1a3 can contain one, two, or more battery cells 20. Moreover, when there are at least two first beams 31, the connection openings 1a3 formed by different beams can be arranged correspondingly or staggered in the second direction Y.
[0100] In addition, a partition beam can be provided inside the battery box 1 to divide the accommodating cavity 1a into two areas. One area can be used to place the beam structure 30 and the battery cell 20, and the other area can be used to place the battery management system and other devices of the battery device 100.
[0101] The battery device 100 in this application divides the accommodating cavity 1a into at least two sub-cavities 1a1 and at least one connecting port 1a3 by a beam structure 30. The at least one beam structure 30 is formed as a first beam 31, allowing the two sub-cavities 1a1 located on either side of the first beam 31 to connect through the at least one connecting port 1a3. In this case, the multiple battery cells 20 in the battery cell assembly 20A can be disposed not only within the sub-cavities 1a1 but also further within the connecting port 1a3. This utilizes the space within the connecting port 1a3, expanding the space that can be arranged for the battery cells 20, thereby improving the energy density of the battery device 100.
[0102] Furthermore, it should be noted that although the first beam 31 is used to separate and enclose to form the connecting opening 1a3, the battery cell 20 itself has rigidity, so the first beam 31 and the inner battery cell 20 located in the connecting opening 1a3 can be constructed as a beam structure 30 without the connecting opening 1a3, in order to meet the overall rigidity requirements of the battery device 100, and thus the overall rigidity of the battery device 100 will not be affected by the setting of the connecting opening 1a3.
[0103] Please refer to Figure 6 In one embodiment of this application, at least a portion of the first beam 31 includes at least two sequentially spaced sub-segments 311 in the first direction X, with each pair of adjacent sub-segments 311 enclosing a communication opening 1a3.
[0104] At least part of the first beam 31 means that only part of the first beam 31 can be set in a split form comprising at least two sub-segments 311, or all of the first beams 31 can be set in a split form comprising at least two sub-segments 311. In addition, the number of sub-segments 311 can be two, or it can be three or more.
[0105] In this embodiment, at least part of the first beam 31 is configured as a split type including at least two sub-segments 311, which allows the position and number of the connecting ports 1a3 to be set more flexibly and diversely, so as to be set and used according to different scenario requirements.
[0106] Please refer to the reference. Figure 6 and Figure 7 In one embodiment of this application, among at least two sub-segments 311, two sub-segments 311 located at both ends along the first direction X are defined as end segments 313; the battery box 1 has two opposing first box walls 121 in the first direction X, and at least one end segment 313 is connected to the adjacent first box wall 121.
[0107] End segment 313 refers to the sub-segment 311 located at both ends in the first direction X among at least two sub-segments 311. When there are two sub-segments 311, these two sub-segments 311 form two end segments 313; when there are three or more sub-segments 311, the two sub-segments 311 located at the two ends form the end segments 313, and the remaining sub-segments 311 can be intermediate segments. For example, when there are three sub-segments 311, the two end segments 311 form the end segments 313, and the middle sub-segment 311 forms the intermediate segment. When there are four sub-segments 311, the two end segments 311 form the end segments 313, and the two middle sub-segments 311 form the intermediate segment. The first box wall 121 can be the wall surface of the battery box 1's box body 12 that is opposite to the first beam 31 in the first direction X. At least one end segment 313 is connected to the adjacent first box wall 121. This means that only one end segment 313 may be connected to the adjacent first box wall 121 without forming a communication opening 1a3, while the other end segment 313 may form a communication opening 1a3 with the adjacent first box wall 121 at an interval; alternatively, both end segments 313 may be connected to the adjacent first box wall 121 without forming a communication opening 1a3. Furthermore, the connection between the end segment 313 and the adjacent first box wall 121 can be a direct connection or an indirect connection via the reinforcing frame 60, as described below. The connection method between the end segment 313 and the adjacent first box wall 121 can be a threaded connection or a welded connection; this application does not limit this.
[0108] In this embodiment, at least one end segment 313 is connected to the adjacent first box wall 121, so that the first beam 31 can be connected to the first box wall 121 at least one end in the first direction X, thereby facilitating the first beam 31 to support the first box wall 121, so as to play an anti-collision role in the first direction X and improve the protection effect of the battery device 100.
[0109] Please refer to the reference. Figure 13 and Figure 14 In one embodiment of this application, at least one end segment 313 is spaced apart from the adjacent first box wall 121 to enclose and form a communication opening 1a3.
[0110] In this embodiment, by setting at least one end segment 313 and the adjacent first box wall 121 as a gap, the number of communication ports 1a3 can be increased, thereby increasing the arrangement position of the battery cells 20, which is conducive to further improving the energy density of the battery device 100.
[0111] Please refer to Figure 15In one embodiment of this application, at least one end of at least a portion of the first beam 31 is spaced apart from the adjacent first box wall 121 at both ends in the first direction X, so as to enclose and form a communication opening 1a3.
[0112] In this embodiment, the first beam 31 can be a single, elongated piece in the first direction X, with at least one of its two ends in the first direction X forming a communication opening 1a3 by spaced-around with the adjacent first box wall 121. This results in fewer components, facilitating the installation and arrangement of the first beam 31. The phrase "at least part of the first beam 31" refers to either only a portion of the first beam 31 being a single, elongated piece, or all of the first beams 31 being a single, elongated piece. Therefore, in some embodiments, some of the first beams 31 can be configured as separate pieces comprising at least two sub-segments 311, as described above, while others can be a single, elongated piece.
[0113] Please refer to Figure 11 In one embodiment of this application, the number of first beams 31 is at least two, and the at least two first beams 31 are arranged at intervals along the second direction Y.
[0114] In this embodiment, the number of first beams 31 is set to at least two, so that the first beams 31 can be arranged at multiple points in the second direction Y, so as to improve the overall rigidity of the battery device 100 and resist collisions in the first direction X.
[0115] Please refer to Figure 11 In one embodiment of this application, the connecting opening 1a3 formed by different first beams 31 is correspondingly arranged in the second direction Y.
[0116] In this embodiment, one first beam 31 is formed by enclosing a sub-segment 311 or by forming a communication opening 1a3 with the first box wall 121, and is correspondingly arranged with another first beam 31 formed by enclosing a sub-segment 311 or by forming a communication opening 1a3 with the first box wall 121 in the second direction Y. This makes the shape of the inner side of the battery box 1 more regular, allowing for the orderly stacking and arrangement of the battery cells 20, thereby improving the convenience of installing and arranging the battery cells 20.
[0117] Please refer to the reference. Figures 4 to 6In one embodiment of this application, some battery cells 20 are arranged sequentially along the second direction Y to form a first battery pack 20B1, and some battery cells 20 are also arranged sequentially along the second direction Y to form a second battery pack 20B3; the battery cells 20 in the first battery pack 20B1 are distributed in the connecting port 1a3 and the portion of the sub-cavity 1a1 corresponding to the connecting port 1a3; the battery cells 20 in the second battery pack 20B3 are distributed in the portion of the sub-cavity 1a1 that is misaligned with the connecting port 1a3.
[0118] In this embodiment, the battery cells 20 in the first battery pack 20B1 are arranged along the second direction Y, distributed within each sub-cavity 1a1 and the connecting port 1a3; simultaneously, the battery cells 20 in the second battery pack 20B3 are also arranged along the second direction Y, distributed within each sub-cavity 1a1, and the first beam 31 is located between two adjacent battery cells 20 in the second battery pack 20B3. In this case, the width direction of the first beam 31 in the second direction Y can be adapted to the thickness direction of the battery cell 20, so that the width of the first beam 31 does not need to be large, reducing the space occupied within the battery box 1, thereby further improving the energy density of the battery device 100.
[0119] The connecting port 1a3 can accommodate one set of first battery packs 20B1, or two or more sets of first battery packs 20B1, depending on the length of the connecting port 1a3 in the first direction X. Furthermore, the width of the first beam 31 in the second direction Y can be less than or equal to the thickness of a single battery cell 20, i.e., the distance or thickness between the two large surfaces 221 as described below. This is to reduce the space occupied by the smaller width of the first beam 31 within the battery box 1, while still allowing the battery cells 20 to be arranged within the connecting port 1a3.
[0120] Please refer to the reference. Figures 3 to 6 In one embodiment of this application, the battery cell 20 has two small faces 223 facing each other in the first direction X, and two large faces 221 facing each other in the second direction Y; the area of the large face 221 is larger than the area of the small face 223, and the first beam 31 is located between the two large faces 221 of two adjacent battery cells 20.
[0121] In this embodiment, the battery cell 20 can be rectangular, forming two large surfaces 221 and two small surfaces 223 in the circumferential direction. The first beam 31 is positioned between the two large surfaces 221 of two adjacent battery cells 20. This allows the width of the first beam 31 to match the thickness of the battery cell 20, reducing the need for a large width and minimizing its impact on the space occupied within the battery box 1. Furthermore, since the expansion force generated by the battery cell 20 during operation is primarily perpendicular to the large surfaces 221, the first beam 31 can also intersect with the direction of the expansion force of the battery cell 20, thus resisting the expansion of the battery cell 20. Additionally, the large surfaces 221 and small surfaces 223 can be located on the casing 22 of the battery cell 20 and arranged around the opening of the casing 22, while the terminal posts 21a of the battery cell 20 can be located on other wall surfaces of the battery cell 20 besides the large surfaces 221 and small surfaces 223.
[0122] Please refer to reference 5 to 6. Figure 8 In one embodiment of this application, the battery box 1 has a second box wall 123, which is located on the side of the beam structure 30 and the battery cell assembly 20A in the third direction Z. The first beam 31 and the battery cell 20 are connected to the second box wall 123.
[0123] The second box wall 123 can be the box wall in the body 12 of the battery box 1 that faces the opening, or it can be said to be the box wall facing the box cover 11.
[0124] In this embodiment, the first beam 31 and the battery cell 20 are both connected to the second box wall 123. The second box wall 123 has a large contact area with the first beam 31 and the battery cell 20, which helps to improve the convenience of the installation and arrangement of the first beam 31 and the battery cell 20 as well as the stability of the connection.
[0125] The first beam 31 and the second box wall 123 can be connected by threads, such as screws, or a combination of bolts and nuts, to improve the convenience and stability of the connection. Alternatively, the first beam 31 and the second box wall 123 can be connected by welding or other methods. The battery cell 20 and the second box wall 123 can be bonded together to avoid damaging the structure of the battery cell 20 itself.
[0126] Please refer to the reference. Figures 7 to 9 In one embodiment of this application, the first beam 31 has an enclosing wall 315 in the first direction X, and the enclosing wall 315 is configured to enclose and form a communication opening 1a3; the enclosing wall 315 can be a plane perpendicular to the first direction X, so that the structure of the first beam 31 is relatively simple and easy to manufacture.
[0127] The enclosing wall 315 can be formed by the end face of the sub-segment 311 in the first direction X when the first beam 31 is a split type including at least two sub-segments 311 as described above, that is, the wall facing the adjacent sub-segment 311, or the wall facing the spaced first box wall 121; when the first beam 31 is a long strip integral type as described above, it can be formed by the end face of the first beam 31 in the first direction X, that is, the wall facing the spaced first box wall 121.
[0128] Please refer to the reference. Figures 10 to 12 In one embodiment of this application, the distance between the side of the enclosing wall 315 away from the second box wall 123 and the battery cell 20 located in the communication port 1a3 is greater than the distance between the side of the enclosing wall 315 closer to the second box wall 123 and the battery cell 20 located in the communication port 1a3.
[0129] The distance between the side of the enclosing wall 315 away from the second box wall 123 and the battery cell 20 located in the connecting opening 1a3 is greater than the distance between the side of the enclosing wall 315 closer to the second box wall 123 and the battery cell 20 located in the connecting opening 1a3. This means that when the third direction Z is vertical and the second box wall 123 is located below the first beam 31 and the battery cell 20, the distance between the upper side of the enclosing wall 315 and the battery cell 20 located in the connecting opening 1a3 is greater than the distance between the lower side of the enclosing wall 315 and the battery cell 20 located in the connecting opening 1a3. At this time, the enclosing wall 315 can be set as an arc surface, or as a plane that intersects with but is not perpendicular to the first direction X, or an avoidance gap 316 can be provided on the upper side of the enclosing wall 315 so that the distance between the upper side of the enclosing wall 315 and the battery cell 20 located in the communication port 1a3 is greater than the distance between the lower side of the enclosing wall 315 and the battery cell 20 located in the communication port 1a3.
[0130] In this embodiment, when the first beam 31 is connected to the lower second box wall 123, after the battery device 100 is subjected to collision and compression in the first direction X, the lower side of the first beam 31 is not easily deformed because it is fixed, while only the upper side of the first beam 31 is relatively easy to deform. Therefore, the distance between the upper side of the enclosing wall 315 and the battery cell 20 located in the communication opening 1a3 is set to be greater than the distance between the lower side of the enclosing wall 315 and the battery cell 20 located in the communication opening 1a3, so that there can be deformation space between the upper side of the enclosing wall 315 and the battery cell 20, thereby reducing the possibility of compression damage to the battery cell 20.
[0131] In addition, it should be noted that the lower side of the enclosing wall 315 and the battery cell 20 located in the communication port 1a3 can be spaced apart or in contact.
[0132] Please refer to Figure 10 In one embodiment of this application, the enclosing wall 315 is provided with an avoidance gap 316 on the side away from the second box wall 123, and the avoidance gap 316 penetrates both sides of the first beam 31 in the second direction Y.
[0133] In this embodiment, an avoidance notch 316 is provided on the upper side of the enclosing wall 315 to facilitate the formation of the required deformation space between the upper side of the enclosing wall 315 and the battery cell 20, while the lower side can ensure the connection area with the second box wall 123.
[0134] Please refer to the reference. Figure 11 and Figure 12 In one embodiment of this application, the enclosing wall surface 315 is an arc surface, including both convex and concave arc surfaces. Alternatively, the enclosing wall surface 315 is a plane that intersects with but is not perpendicular to the first direction X. When the first direction X is horizontal, the enclosing wall surface 315 can be described as an inclined surface.
[0135] In this embodiment, the enclosing wall 315 is set as an arc surface or a plane that intersects with but is not perpendicular to the first direction X, which can make the structure of the enclosing wall 315 simpler and improve the ease of manufacturing.
[0136] Please refer to Figure 12 In one embodiment of this application, a first buffer 40 and / or an energy-absorbing element are provided between the first beam 31 and the battery cell 20 located in the communication port 1a3 in the first direction X.
[0137] The first buffer 40 serves as a cushioning element. It can be a silicone pad or a rubber pad, etc. The energy-absorbing element absorbs impacts received by the battery device 100 in the first direction X. It can be EVA foam, ACF material, or foam, etc. Furthermore, the space between the first beam 31 and the battery cell 20 located within the communication opening 1a3 may consist of only the first buffer 40, only the energy-absorbing element, or both.
[0138] In this embodiment, a first buffer 40 and / or an energy-absorbing element are provided between the first beam 31 and the battery cell 20 located in the communication port 1a3, so that the first buffer 40 and / or the energy-absorbing element can buffer and absorb the impact received by the battery device 100 in the first direction X, thereby improving the protection of the battery cell 20.
[0139] Please refer to Figure 5 In one embodiment of this application, in the second direction Y, the first beam 31 is provided with a second buffer 50 between itself and the opposite battery cell 20.
[0140] In this embodiment, a second buffer 50 is provided between the first beam 31 and the opposing battery cell 20 in the second direction Y. This buffer 50 can cushion the compression between the two, reducing the possibility of damage to the battery cell 20 and improving the protection of the battery cell 20. The second buffer 50 can be a silicone pad or a rubber pad, etc.
[0141] Please refer to the reference. Figures 6 to 8 In one embodiment of this application, the battery device 100 further includes a reinforcing frame 60, which is connected to the first box wall 121. At least one end of the first beam 31 in the first direction X is connected to the reinforcing frame 60. On the projection plane perpendicular to the first direction X, a portion of the projection of the reinforcing frame 60 is located outside the projection of the first beam 31.
[0142] The reinforcing frame 60 can be a flat plate structure or a single-piece structure; this application does not limit the structural type and shape of the reinforcing ribs. Furthermore, the reinforcing frame 60 and the first box wall 121 can be connected by threads, such as a combination of screws or bolts and nuts; or they can be connected by welding. Additionally, when the first beam 31 is configured as a split type comprising at least two sub-segments 311 as described above, it can be connected to the reinforcing frame 60 by an end segment 313. When the first beam 31 is configured as a long, integral strip as described above, it can be connected to the reinforcing frame 60 by its end in the first direction X. Furthermore, the first beam 31 and the reinforcing frame 60 can be connected by threads, such as a combination of screws or bolts and nuts; or they can be connected by welding. Moreover, to improve the stability and accuracy of the connection between the first beam 31 and the reinforcing frame 60, the reinforcing frame 60 can be provided with a limiting groove for the insertion of the first beam 31. In addition, the fact that part of the projection of the reinforcing frame 60 is located outside the projection of the first beam 31 means that the projected area of the reinforcing frame 60 can be larger than the projected area of the first beam 31.
[0143] In this embodiment, the connection area between the reinforcing beam and the first box wall 121 can be increased by strengthening the beam, which in turn helps to improve the stability of the connection between the first beam 31 and the first box wall 121, so as to stably resist collisions.
[0144] Please refer to the reference. Figure 7 and Figure 8 In one embodiment of this application, a cavity 317 is provided inside the first beam 31.
[0145] In this embodiment, a cavity 317 is provided within the first beam 31, which can reduce the amount of material used and improve the lightweight effect of the first beam 31; at the same time, it can also reduce manufacturing costs. The cavity 317 can extend along a first direction X, or it can extend along a third direction Z, or there can be at least a plurality of cavities 317, spaced apart sequentially in the first direction X or the third direction Z. Furthermore, when the first beam 31 is configured as a split type comprising at least two sub-segments 311 as described above, each sub-segment 311 can have a cavity 317, or only some sub-segments 311 can have a cavity 317. Additionally, when the first beam 31 is connected to the first box wall 121 without forming a communication opening 1a3, the cavity 317 can penetrate the wall surface of the first beam 31 facing the first box wall 121, or it can not penetrate the wall surface of the first beam 31 facing the first box wall 121.
[0146] Please refer to the reference. Figure 8 and Figure 9 In one embodiment of this application, the cavity 317 extends along the first direction X and penetrates the enclosing wall 315; the battery device 100 also includes a cover plate 70, which is disposed on the enclosing wall 315 and covers the opening of the cavity 317.
[0147] In this embodiment, the cavity 317 extends along the first direction X and penetrates the enclosing wall 315, making the cavity 317 open, which improves manufacturing convenience. Furthermore, by covering it with the sealing plate 70, the contact area with the battery cell 20 located within the communication opening 1a3 is increased, reducing the possibility of stress concentration causing pressure damage to the battery cell 20 and improving the protection of the battery cell 20.
[0148] Wherein, when the enclosing wall 315 is an arc surface as described above, or a plane that intersects with but is not perpendicular to the first plane, the cover plate 70 can be adapted to be an arc surface, or a flat plate that intersects with but is not perpendicular to the first plane.
[0149] Please refer to the reference. Figure 13 and Figure 14 In one embodiment of this application, the battery device 100 further includes a mounting member 80, which is connected to the first beam 31. The mounting member 80 extends along a third direction Z and extends through the battery box 1 to the outside of the receiving cavity 1a. The third direction Z intersects with the first direction X and the second direction Y.
[0150] In this embodiment, a mounting member 80 can be integrated into the first beam 31 so that the upper end of the mounting member 80, after passing through the cover 11 of the battery box 1, can be mounted on the electrical equipment, thereby realizing the mounting and installation of the battery device 100 on the electrical equipment. In this case, directly using the first beam 31 to set the mounting member 80 eliminates the need to occupy additional space in the sub-cavity 1a1, thus not affecting the arrangement of the battery cells 20 and facilitating the improvement of the energy density of the battery device 100. The mounting member 80 and the first beam 31 can be connected by threads, such as a combination of screws or bolts and nuts, or by welding. The connection between the mounting member 80 and the electrical equipment can also be a threaded connection, such as a combination of screws or bolts and nuts, or by welding. This application does not limit the connection between the mounting member 80 and the first beam 31, or the connection between the mounting member 80 and the electrical equipment. Furthermore, whether the first beam 31 is configured as a split type including at least two sub-segments 311 as described above, or as a long strip integral type, the mounting component 80 can be integrated on the first beam 31.
[0151] Please refer to the reference. Figures 2 to 9 .as well as Figure 11 and Figure 12In one embodiment of this application, the battery device 100 includes a battery box 1, at least one beam structure 30, and a battery cell assembly 20A; the battery box 1 has a receiving cavity 1a; the beam structure 30 is disposed in the receiving cavity 1a and extends along a first direction X, the beam structure 30 divides the receiving cavity 1a into at least two sub-cavities 1a1 and at least one connecting port 1a3; the at least two sub-cavities 1a1 are arranged along a second direction Y, the second direction Y intersects the first direction X; the at least one beam structure 30 is formed as a first beam 31, and two adjacent sub-cavities 1a1 separated by the first beam 31 are connected through at least one connecting port 1a3; the battery cell assembly 20A is disposed in the receiving cavity 1a, the battery cell assembly 20A includes a plurality of battery cells 20, some of the battery cells 20 are located in the sub-cavities 1a1, and some of the battery cells 20 are located in the connecting port 1a3. At least a portion of the first beam 31 includes at least two sequentially spaced sub-segments 311 along the first direction X, with each pair of adjacent sub-segments 311 enclosing a connecting opening 1a3. Among the at least two sub-segments 311, the two sub-segments 311 located at either end along the first direction X are defined as end segments 313. The battery box 1 has two opposing first box walls 121 along the first direction X, and at least one end segment 313 is connected to a nearby first box wall 121. The number of first beams 31 is at least two, and the at least two first beams 31 are sequentially spaced along the second direction Y. The connecting openings 1a3 formed by the different first beams 31 are correspondingly arranged along the second direction Y. Some battery cells 20 are arranged sequentially along the second direction Y to form a first battery pack 20B1, and some battery cells 20 are also arranged sequentially along the second direction Y to form a second battery pack 20B3. The battery cells 20 in the first battery pack 20B1 are distributed in the connecting opening 1a3 and the portion of the sub-cavity 1a1 corresponding to the connecting opening 1a3. The battery cells 20 in the second battery pack 20B3 are distributed in the portion of the sub-cavity 1a1 that is misaligned with the connecting opening 1a3. Each battery cell 20 has two small faces 223 facing each other in the first direction X, and two large faces 221 facing each other in the second direction Y. The area of the large faces 221 is larger than the area of the small faces 223. The first beam 31 is located between the two large faces 221 of two adjacent battery cells 20. The battery box 1 has a second box wall 123 located on one side of the beam structure 30 and the battery cell assembly 20A in the third direction Z, which intersects the first direction X and the second direction Y. The first beam 31 and the battery cell 20 are connected to the second box wall 123. The first beam 31 has an enclosing wall 315 in the first direction X, which is configured to enclose and form a communication opening 1a3. The distance between the side of the enclosing wall 315 away from the second box wall 123 and the battery cell 20 located in the communication opening 1a3 is greater than the distance between the side of the enclosing wall 315 closer to the second box wall 123 and the battery cell 20 located in the communication opening 1a3.The enclosing wall 315 is curved. In the first direction X, a first buffer 40 and / or energy-absorbing element are provided between the first beam 31 and the battery cell 20 located in the connecting opening 1a3. In the second direction Y, a second buffer 50 is provided between the first beam 31 and the opposite battery cell 20. The battery box 1 has two opposing first box walls 121 in the first direction X. The battery device 100 also includes a reinforcing frame 60, which is connected to the first box wall 121. At least one end of the first beam 31 in the first direction X is connected to the reinforcing frame 60. On the projection plane perpendicular to the first direction X, a portion of the projection of the reinforcing frame 60 is located outside the projection of the first beam 31. A cavity 317 is provided inside the first beam 31. The first beam 31 has an enclosing wall 315, which is configured to enclose and form a communication opening 1a3; the cavity 317 extends along the first direction X and penetrates the enclosing wall 315; the battery device 100 also includes a cover plate 70, which is disposed on the enclosing wall 315 and covers the opening of the cavity 317.
[0152] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A battery device, characterized by, include: A battery box, wherein the battery box has a receiving cavity; At least one beam structure is disposed within the accommodating cavity and extends along a first direction, the beam structure dividing the accommodating cavity into at least two sub-cavities and at least one connecting port; At least two of the sub-cavities are arranged along a second direction, which intersects with the first direction; At least one of the beam structures is formed as a first beam, and two adjacent sub-cavities separated by the first beam are connected through at least one of the communication ports; and A battery cell assembly is disposed within the accommodating cavity. The battery cell assembly includes multiple battery cells, some of which are located in the sub-cavity and some of which are located in the connecting port.
2. The battery device as claimed in claim 1, characterized in that, At least a portion of the first beam includes at least two sequentially spaced sub-segments in the first direction, with each pair of adjacent sub-segments enclosing the communication opening.
3. The battery device as claimed in claim 2, characterized in that, In at least two sub-segments, the two sub-segments located at both ends along the first direction are defined as end segments; The battery box has two opposing first boxes in the first direction, and at least one of the end segments is connected to the adjacent first boxes. Alternatively, at least one of the end segments is spaced apart from the adjacent first box wall to enclose and form the communication opening.
4. The battery device as claimed in claim 1, characterized in that, The battery box has two opposing first boxes in the first direction, and at least one end of the first beam at both ends in the first direction is spaced apart from the adjacent first boxes to enclose and form the communication opening.
5. The battery device as claimed in claim 1, characterized in that, The number of the first beams is at least two, and the at least two first beams are arranged at intervals along the second direction.
6. The battery device as claimed in claim 5, characterized in that, The connecting openings formed by the different first beams are correspondingly arranged in the second direction.
7. The battery device as claimed in claim 1, characterized in that, Some of the battery cells are arranged sequentially along the second direction to form a first battery pack, and some of the battery cells are also arranged sequentially along the second direction to form a second battery pack; The individual battery cells in the first battery pack are distributed at the communication port and in the portion of the sub-cavity corresponding to the communication port; The individual battery cells in the second battery pack are distributed in the portion of the sub-cavity that is misaligned with the communication port.
8. The battery device as claimed in claim 7, characterized in that, The battery cell has two small faces facing away from each other in the first direction and two large faces facing away from each other in the second direction; The area of the large surface is larger than the area of the small surface, and the first beam is located between the two large surfaces of two adjacent battery cells.
9. The battery device according to any one of claims 1 to 8, characterized in that, The battery box has a second box wall located on one side of the beam structure and the battery cell assembly in a third direction, the third direction intersecting the first direction and the second direction, and the first beam and the battery cell are connected to the second box wall.
10. The battery device as claimed in claim 9, characterized in that, The first beam has an enclosing wall in the first direction, the enclosing wall being configured to enclose and form the communication opening; The distance between the side of the enclosing wall away from the second box wall and the battery cell located in the communication opening is greater than the distance between the side of the enclosing wall closer to the second box wall and the battery cell located in the communication opening.
11. The battery device as claimed in claim 10, characterized in that, The enclosing wall surface is curved; Alternatively, the enclosing wall is a plane that intersects with but is not perpendicular to the first direction; Alternatively, the enclosing wall may have a clearance notch on the side away from the second box wall, and the clearance notch extends through both sides of the first beam in the second direction.
12. The battery device according to any one of claims 1 to 8, characterized in that, In the first direction, a first buffer and / or energy-absorbing element is provided between the first beam and the battery cell located in the communication port.
13. The battery device according to any one of claims 1 to 8, characterized in that, In the second direction, the first beam has a second buffer between it and the opposite battery cell.
14. The battery device according to any one of claims 1 to 8, characterized in that, The battery box has two opposing first boxes in the first direction, and the battery device further includes a reinforcing frame connected to the first boxes, and at least one end of the first beam in the first direction is connected to the reinforcing frame; On a projection plane perpendicular to the first direction, a portion of the projection of the reinforcing frame is located outside the projection of the first beam.
15. The battery device according to any one of claims 1 to 8, characterized in that, The first beam has a cavity inside.
16. The battery device as claimed in claim 15, characterized in that, The first beam has an enclosing wall, which is configured to enclose and form the communication opening; The cavity extends along the first direction and penetrates the enclosing wall; The battery device also includes a cover plate, which is disposed on the enclosing wall and covers the opening of the cavity.
17. The battery device according to any one of claims 1 to 8, characterized in that, The battery device also includes a mounting component, which is connected to the first beam; The mounting component extends along a third direction and penetrates the battery box to the outside of the receiving cavity, the third direction intersecting the first direction and the second direction.
18. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 17.