Battery device and vehicle

Abstract

The utility model relates to a battery device and a vehicle. The battery device comprises a box body module, a cover body and a supporting piece, the box body module comprises a plurality of box bodies stacked along a first direction, each box body comprises a frame, and the frame is provided with an accommodating cavity for accommodating the battery module; the cover body covers one end, in the first direction, of the box body module, the supporting piece is arranged on the outer side of a frame of at least one box body and is separated from the box body farthest away from the end cover in the first direction, and the supporting piece is configured to connect the frame to a vehicle body. According to the battery device provided by the invention, the supporting piece provides support for the box body module, so that the gravity center shift force caused by box body stacking can be reduced, the risks of inclination and shaking of the box bodies are improved, and the reliability of the battery device is improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to battery devices and vehicles. Background Technology

[0002] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] In the development of batteries, how to improve the reliability of battery devices is a technical problem that urgently needs to be solved. Utility Model Content

[0004] This application provides a battery device and a vehicle, which aims to improve the reliability of the battery device to a certain extent.

[0005] In a first aspect, this application proposes a battery device including a housing module, a cover, and a support member; the housing module includes a plurality of housings stacked along a first direction, each housing including a frame having a receiving cavity for accommodating a battery module; the cover is fitted onto one end of the housing module along the first direction, and the support member is disposed on the outside of the frame of at least one housing and is separated from the housing furthest from the cover along the first direction, the support member being configured to connect the frame to a vehicle body.

[0006] The battery device provided in this application has a support member disposed on the outer side of the frame to connect the frame to the vehicle body. The support member can distribute the stacking load of the lower-level housing along the first direction, improve the concentration of pressure on the bottom housing, reduce the risk of cracking and denting due to insufficient strength of the housing, and enhance the overall structural rigidity. The support member provides support for the housing module, which can reduce the center of gravity shift force caused by the stacking of housings, improve the risk of tilting and swaying of the housing, and thus improve the reliability of the battery device.

[0007] According to one embodiment of this application, the support member is detachably connected to the frame. By detachably connecting the support member to the frame, the support member can be adjusted in a first direction to adapt to the desired support position.

[0008] According to one embodiment of this application, the frame includes multiple side beams connected end to end, and a support member is connected to two adjacent side beams. Since the support member connects two side beams simultaneously, the force can be distributed to the two adjacent side beams, reducing stress concentration at the support point, decreasing frame deformation under stress, extending the frame's service life, and also increasing the connection stability between the support member and the frame.

[0009] According to one embodiment of this application, the support member includes a first support portion and a second support portion. At least a portion of the first support portion extends along a first direction and is connected to two adjacent side beams. The second support portion is connected to the first support portion and extends along a plane perpendicular to the first direction. The second support portion is configured to connect to the vehicle body. The fact that the second support portion is connected to the first support portion and extends along a plane perpendicular to the first direction allows the support member to act as an energy-absorbing component. In the event of an external impact or collision, it absorbs impact energy through its own bending deformation, reducing damage to the housing under external forces, thereby improving the overall structural stability of the battery device.

[0010] According to one embodiment of this application, the first support portion includes a first support segment and a second support segment, which are respectively connected to two adjacent side beams, and the first support segment and the second support segment are arranged vertically.

[0011] According to one embodiment of this application, the second support includes a third support segment and a fourth support segment. The third support segment is connected to the first support segment and extends along a plane perpendicular to the first direction, while the fourth support segment is connected to the second support segment and extends along a plane perpendicular to the first direction. The third and fourth support segments are respectively used for connection to the vehicle body. The support member can provide support and connection to the housing module in two directions, effectively reducing the risk of tilting and swaying.

[0012] According to one embodiment of this application, the second support portion is provided with a through hole for connection to the vehicle body. The support member is connected to the vehicle body via the through hole, thus simplifying the connection method of the support member.

[0013] According to one embodiment of this application, the support member further includes reinforcing ribs connected to the first support portion and the second support portion. The reinforcing ribs increase the structural strength of the support member, facilitate uniform stress transmission, and extend the service life of the support member.

[0014] According to one embodiment of this application, the housing includes a support plate connected to the frame and covering the receiving cavity, the support plate being disposed opposite to the cover along a first direction; the battery device further includes a connector disposed on the support plate of the housing furthest from the cover along the first direction, the connector being used to fix the support plate to the vehicle body. The connector connects the bottommost support plate along the first direction to the vehicle body, thereby fixing the entire battery device to the vehicle body.

[0015] According to one embodiment of this application, the connector includes a flange and a connecting portion. The flange is disposed at one end of the connecting portion facing the cover in a first direction. The connecting portion is embedded in a support plate, and the flange is snapped onto the support plate. The connector, including the flange and the connecting portion, enhances the connection stability between the support plate and the vehicle body, effectively increases the anti-loosening and anti-detachment performance of the connector, and simplifies the connection method between the support plate and the vehicle body. It enables directional connection from the vehicle body to the support plate, simplifying the assembly and disassembly of the battery device and the vehicle body.

[0016] According to one embodiment of this application, the connector has a connecting hole that passes through the flange portion and the connecting portion; the flange portion has threads around the inner wall surface of the connecting hole. This simplifies the installation method of the battery device and the vehicle body.

[0017] According to one embodiment of this application, the support plate includes a plate body and a stepped portion. The stepped portion protrudes from the plate body along a first direction toward the cover. A connector is embedded in and engaged with the plate body. The stepped portion is used to restrict the rotation of the connector. The stepped portion limits the rotation of the connector. During the installation of the support plate onto the vehicle body, the stepped portion limits the connector, reducing the possibility of rotation or loosening of the connector, thereby stably fixing the support plate to the vehicle body.

[0018] According to one embodiment of this application, the support plate and the frame are integrally formed. This helps to improve the structural strength of the enclosure.

[0019] According to one embodiment of this application, the battery device includes a plurality of support members, which are circumferentially spaced along the edge of the frame. This increases the connection stability between the battery device and the vehicle body.

[0020] According to one embodiment of this application, the battery device includes multiple support members, with support members provided on the edges of at least two housings. Multi-point support along a first direction effectively reduces the risk of center-of-gravity shift caused by housing stacking, further improving the reliability of the battery device.

[0021] Secondly, this application provides a vehicle that includes multiple battery devices as described above and a vehicle body, with a support member connected to the vehicle body.

[0022] The vehicle provided in this application has a support component that provides support for the box module, which can reduce the center of gravity shift caused by the stacking of boxes, improve the risk of tilting and shaking, and make the battery device stably installed in the vehicle body.

[0023] According to one embodiment of this application, the vehicle also includes bolts that are threadedly connected to the connectors of the battery device, and the support plate of the housing is fixed to the vehicle body by the connectors and bolts.

[0024] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0025] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application;

[0027] Figure 2 This is a partial exploded view of a battery device provided in one embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of a battery device provided in an embodiment of this application. Figure 1 ;

[0029] Figure 4 This is a front view of a battery device provided in an embodiment of this application;

[0030] Figure 5 This is a right view of a battery device provided in an embodiment of this application;

[0031] Figure 6 This is a top view of a battery device provided in an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the structure of a support member for a battery device provided in one embodiment of this application. Figure 1 ;

[0033] Figure 8 This is a schematic diagram of the structure of a support member for a battery device provided in one embodiment of this application. Figure 2 ;

[0034] Figure 9 This is a schematic diagram of the structure of a battery device provided in an embodiment of this application. Figure 2 ;

[0035] Figure 10 This is a partial front view of a battery device provided in an embodiment of this application;

[0036] Figure 11 yes Figure 10 Sectional view at AA;

[0037] Figure 12 yes Figure 11 A magnified view of a portion of the image.

[0038] The accompanying drawings may not be drawn to scale.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1000, Vehicle; 100, Battery unit; 200, Controller; 300, Motor;

[0041] 1. Battery module;

[0042] 10. Box module; 11. Box; 111. Frame; 1111. Side beam; 112. Receiving cavity; 113. Support plate; 1131. Plate section; 1132. Step section;

[0043] 20. Cover;

[0044] 30. Support component; 31. First support part; 311. First support section; 312. Second support section; 32. Second support part; 321. Third support section; 322. Fourth support section; 33. Chamfer; 34. Through hole; 35. Reinforcing rib;

[0045] 40. Connecting component; 41. Flange; 42. Connecting part; 43. Connecting hole;

[0046] x, first direction; y, second direction; z, third direction. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0049] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0052] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0053] In this application, "multiple" means two or more (including two).

[0054] Currently, judging from market trends, the application of batteries is becoming increasingly widespread. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace, among other fields.

[0055] A battery device typically refers to a single physical module comprising multiple battery cells to provide higher voltage and capacity. A battery cell can be the smallest unit that makes up a battery device.

[0056] In related technologies, battery pack housings are primarily single-layer designs. Within the same floor space, multi-layered stacked housings offer greater energy savings than single-layered housings, and also improve space utilization. However, the more layers of housings stacked, the higher the overall center of gravity of the battery pack becomes. This not only places higher demands on the connection strength of the lower layers but also increases the risk of tilting and swaying, thus reducing stability and hindering the reliability of the battery pack. The above statements are for background information related to this application only and do not necessarily constitute prior art.

[0057] The battery device provided in this application has a support member disposed on the outer side of the frame to connect the frame to the vehicle body. The support member can distribute the stacking load of the lower-level housing along the first direction, improve the concentration of pressure on the bottom housing, reduce the risk of cracking and denting due to insufficient strength of the housing, and enhance the overall structural rigidity. The support member provides support for the housing module, which can reduce the center of gravity shift force caused by the stacking of housings, improve the risk of tilting and swaying of the housing, and thus improve the reliability of the battery device.

[0058] The battery cell described in this application is applicable to batteries and electrical devices that use batteries. This battery cell can be used, but is not limited to, batteries, and can also be used in products such as vehicles, aircraft, ships, electronic devices, and power tools, thereby improving the reliability of these products.

[0059] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0060] 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.

[0061] See Figure 1As shown, one embodiment of this application provides a vehicle 1000. 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. In one embodiment of this application, the vehicle 1000 may include a motor 300, a controller 200, and a battery device 100. The controller 200 is used to control the battery device 100 to supply power to the motor 300. The motor 300 is connected to the wheels via a transmission mechanism, thereby driving the vehicle 1000. The battery device 100 can serve as the driving power source for the vehicle 1000, replacing or partially replacing gasoline or natural gas to provide driving power to the vehicle 1000. In one example, the battery device 100 may be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to supply power to the vehicle 1000. In one example, the battery device 100 can serve as the operating power source for the vehicle 1000's electrical system. For example, the battery device 100 can be used to meet the power needs of the vehicle 1000 during startup, navigation and operation.

[0062] Please refer to Figure 2 , Figure 2 This is a partial exploded view of a battery device 100 provided in some embodiments of this application.

[0063] In some embodiments, the battery device 100 may include one or more battery cell assemblies for providing voltage and capacity.

[0064] A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connection via a busbar. Mixed connection refers to multiple battery cells being connected in both series and parallel connections.

[0065] A battery cell can be a rechargeable battery cell, which refers to a battery cell that can be recharged after being discharged to activate the active materials and continue to be used.

[0066] As an example, a single battery cell can be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-metal hydride battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc.

[0067] As an example, a battery cell can be a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells.

[0068] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module 1, which is formed by arranging and fixing multiple battery cells into a single module. As an example, battery module 1 can be formed by bundling multiple battery cells together with cable ties.

[0069] In some embodiments, the battery device 100 may be a battery pack, which includes a housing and one or more battery cell assemblies housed within the housing. As an example, the battery cell assembly may be a battery module 1, which can be housed within the housing by fixing the battery module 1 to the housing. Alternatively, the battery cell assembly may be housed within the housing by directly fixing multiple battery cells to the housing.

[0070] In some embodiments, the battery pack includes multiple stacked housings.

[0071] In some embodiments, the housing is used to house individual battery cells, and the housing can have various structures.

[0072] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0073] In some embodiments, the battery device 100 may be an energy storage device.

[0074] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, energy storage devices can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours.

[0075] In some embodiments, the energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0076] In some embodiments, there are multiple battery cells, which are first connected in series, parallel, or mixed to form a battery module 1. The multiple battery modules 1 are then connected in series, parallel, or mixed to form a whole and housed in a housing.

[0077] Multiple battery cells in battery module 1 can be electrically connected through a busbar to achieve parallel, series, or mixed connection of multiple battery cells in battery module 1. There can be one or more busbars, and each busbar is used to electrically connect at least two battery cells.

[0078] See Figure 3 , Figure 3This is a schematic diagram of the structure of a battery device provided in an embodiment of this application. Figure 1 .

[0079] like Figure 2 and Figure 3 As shown, this application proposes a battery device, which includes a housing module 10 and a cover 20.

[0080] The housing module 10 includes a plurality of housings 11 stacked along a first direction x. Each housing 11 includes a frame 111 having a receiving cavity 112 for accommodating a battery module 1.

[0081] The housing 11 is a component that forms the internal receiving cavity 112 of the battery device. The internal receiving cavity 112 can be used to accommodate multiple battery cells and other components.

[0082] The cavity 112 is a relatively enclosed space.

[0083] For example, the border 111 may define a generally rectangular receiving cavity 112.

[0084] In some examples, the cavity 112 is divided into multiple functional areas. Some functional areas are used to house multiple battery cells. Different functional areas may use the same or different multiple battery cells. Some functional areas are used to house components such as BMS (Battery Management System).

[0085] In some examples, multiple boxes 11 are stacked along a first direction x, with the upper box 11 covering the lower box 11 along the first direction x.

[0086] In some examples, two adjacent housings 11 are connected by at least one of the following methods: welding, bolting, hinge, snap-fitting, gluing, or connector connection.

[0087] The cover 20 covers one end of the box module 10 along the first direction x.

[0088] In some examples, the cover 20 may be a plate-like structure that covers the opening side of the box 11 at one end along the first direction x.

[0089] In some examples, both the cover 20 and the box 11 can be hollow structures with an opening on one side, with the opening side of the cover 20 fitting over the opening side of the box 11. Of course, the box 11 formed by the cover 20 and the box 11 can be of various shapes, such as a cylinder, a cuboid, etc.

[0090] In some examples, along the first direction x, the box 11 furthest from the cover 20 is configured to be fixed to the vehicle body.

[0091] like Figure 2 and Figure 3 As shown, the battery device includes a support 30 disposed on the outer side of the frame 111 of at least one housing 11 and separated from the housing 11 furthest from the cover 20 along the first direction x. The support 30 is configured to connect the frame 111 to the vehicle body. The support 30 provides support for the battery device and also helps to improve the connection strength between the battery device and the vehicle body.

[0092] The first direction, x, is the vertical direction. Multiple boxes 11 are stacked along the vertical direction.

[0093] In some examples, the first direction x is parallel to the direction of gravity.

[0094] In some examples, a first box, a second box, and a third box are arranged sequentially along a first direction x, a cover 20 is fitted onto the third box, and a support 30 is disposed on at least one of the second and third boxes.

[0095] In some examples, the support member 30 includes a first part and a second part, the first part being connected to the frame 111 and the second part being used to connect to the vehicle body.

[0096] In some examples, the support member 30 is connected to the frame 111, and the support member 30 is connected to the vehicle body. The connection method is at least one of welding, bolting, hinge, snap-fit, adhesive bonding, or connection of connecting components.

[0097] The battery device provided in this application has a support member 30 disposed on the outer side of the frame 111 to connect the frame 111 to the vehicle body. The support member 30 can distribute the stacking load of the lower-layer housing 11 along the first direction x, improve the pressure concentration on the bottom housing 11, reduce the risk of cracking and denting of the housing 11 due to insufficient strength, and enhance the overall structural rigidity. The support member 30 provides support for the housing module 10, which can reduce the center of gravity offset force caused by the stacking of housing 11, improve the risk of tilting and swaying of housing 11, and thus improve the reliability of the battery device.

[0098] According to one embodiment of this application, such as Figure 2 and Figure 3 As shown, the support member 30 is detachably connected to the frame 111.

[0099] In some examples, the support member 30 is provided with a latch, and multiple housings 11 are provided with slots, with the latch engaging with the slot of one housing 11. By adjusting the different positions of the latch in the first direction x, engagement with housings 11 in different directions x can be achieved.

[0100] In some examples, the support member 30 is provided with a first hole through which a screw passes to the housing 11 to connect the support member 30 to the housing 11 in a first direction x.

[0101] By detachably connecting the support member 30 to the frame 111, the support member 30 can be adjusted in the first direction x, and the support position can be adapted as needed.

[0102] According to one embodiment of this application, the frame 111 includes a plurality of side beams 1111 connected end to end, and the support member 30 is connected to two adjacent side beams 1111.

[0103] See also Figure 4 and Figure 5 , Figure 4 This is a front view of a battery device provided in an embodiment of this application; Figure 5 This is a right view of a battery device provided in an embodiment of this application.

[0104] In some examples, such as Figures 3 to 5 As shown. The frame 111 includes multiple side beams 1111, which are connected end to end and enclose to form a frame structure.

[0105] In some examples, the border 111 is roughly rectangular.

[0106] For example, the plurality of side beams 1111 includes two first side beams spaced apart along a second direction y and two second side beams spaced apart along a third direction z, the first side beams being connected to the second side beams, and the support member 30 being connected to the first side beams and the second side beams.

[0107] In some examples, connector 40 overlaps with a portion of the two adjacent side beams 1111; alternatively, connector 40 overlaps completely with the two adjacent side beams 1111.

[0108] The support member 30 connects two side beams 1111 at the same time, and the force can be distributed to the two adjacent side beams 1111, reducing stress concentration at the support point, reducing the stress deformation of the frame 111, extending the service life of the frame 111, and also increasing the connection stability between the support member 30 and the frame 111.

[0109] See also Figure 6 and Figure 7 As shown, Figure 6 This is a top view of a battery device provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a support member for a battery device provided in one embodiment of this application. Figure 1 .

[0110] According to one embodiment of this application, such as Figures 5 to 7As shown, the support member 30 includes a first support portion 31 and a second support portion 32. At least a portion of the first support portion 31 extends along a first direction x. The first support portion 31 is connected to two adjacent side beams 1111. The second support portion 32 is connected to the first support portion 31 and extends along a plane perpendicular to the first direction x. The second support portion 32 is configured to be connected to the vehicle body.

[0111] The support member 30 includes a first support portion 31, at least a portion of which extends along a first direction x, so as to achieve surface-to-surface contact between the first support portion 31 and the side beam 1111, thereby strengthening the structural strength of the frame 111 and enhancing the deformation resistance of the frame 111.

[0112] In some examples, the first support 31 is connected to two adjacent side beams 1111 by at least one of the following methods: welding, bolting, hinge, snap-fitting, adhesive bonding, or connection of connecting components.

[0113] In some examples, the second support 32 is connected to the first support 31 and extends away from the frame 111 along a plane perpendicular to the first direction x. The gravitational load of the housing 11 can be transferred to the vehicle body along a direction perpendicular to the first direction x.

[0114] In some examples, the second support 32 is connected to a portion of the first support 31; alternatively, the second support 32 is connected to the entire first support 31.

[0115] As an example, the dimension of the first support portion 31 along the first direction x is equal to the dimension of the second support portion 32 along the direction perpendicular to the first direction x.

[0116] As an example, the dimension of the first support portion 31 along the first direction x is smaller than the dimension of the second support portion 32 along the direction perpendicular to the first direction x.

[0117] In some examples, the second support 32 is connected to the vehicle body by at least one of the following methods: welding, bolting, hinge, snap-fitting, adhesive bonding, or connecting with connectors.

[0118] In some examples, the first support portion 31 and the second support portion 32 are integrally formed. This is beneficial for improving the structural strength and stability of the support member 30.

[0119] The second support 32 is connected to one end of the first support 31 and extends along a plane perpendicular to the first direction x, so that the support 30 can act as an energy-absorbing component. When subjected to external impact or collision, it absorbs impact energy through its own bending deformation, reduces damage to the housing 11 under external action, and thus improves the overall structural stability of the battery device.

[0120] See also Figure 8 , Figure 8This is a schematic diagram of the structure of a support member for a battery device provided in one embodiment of this application. Figure 2 .

[0121] According to one embodiment of this application, such as Figure 4 , Figure 7 and Figure 8 As shown, the first support part 31 includes a first support section 311 and a second support section 312. The first support section 311 and the second support section 312 are respectively connected to two adjacent side beams 1111. The first support section 311 and the second support section 312 are arranged vertically.

[0122] In some examples, two adjacent side beams 1111 include a first side beam and a second side beam, a first support segment 311 is connected to the first side beam, and a second support segment 312 is connected to the second side beam.

[0123] As an example, the first support section 311 is provided with a first mounting hole, and the battery device includes a first bolt that passes through the first mounting hole to fix the first support section 311 to the first side beam.

[0124] As an example, the second support section 312 is provided with a second mounting hole, and the battery device includes a second bolt that passes through the second mounting hole to fix the second support section 312 to the second side beam.

[0125] In some examples, the second support portion 32 is connected to the first support segment 311; or, the second support portion 32 is connected to the second support segment 312; or, the second support portion 32 is connected to both the first support segment 311 and the second support segment 312.

[0126] According to one embodiment of this application, such as Figure 4 , Figure 7 and Figure 8 As shown, the second support portion 32 includes a third support section 321 and a fourth support section 322. The third support section 321 is connected to the first support section 311 and extends along a plane perpendicular to the first direction x. The fourth support section 322 is connected to the second support section 312 and extends along a plane perpendicular to the first direction x. The third support section 321 and the fourth support section 322 are respectively used for connection with the vehicle body.

[0127] In some examples, the third support segment 321 and the fourth support segment 322 intersect and connect.

[0128] The support member 30 can provide support and connection for the housing module 10 in two directions, effectively reducing the risk of tilting or swaying of the housing 11.

[0129] According to one embodiment of this application, such as Figure 7 and Figure 8As shown, an arc-shaped chamfer 33 is provided at the connection between the third support section 321 and the fourth support section 322. The arc-shaped transition connection between the third support section 321 and the fourth support section 322 is beneficial to stress dispersion and improves the phenomenon of local stress concentration in the support member 30.

[0130] According to one embodiment of this application, such as Figure 7 and Figure 8 As shown, the second support part 32 is provided with a through hole 34, which is used to connect with the vehicle body.

[0131] In some examples, the second support portion 32 is provided with a plurality of through holes 34, which are spaced apart.

[0132] In some examples, both the third support section 321 and the fourth support section 322 are provided with at least one through hole 34.

[0133] In some examples, the chamfer 33 is provided with at least one through hole 34.

[0134] The support member 30 is connected to the vehicle body through the through hole 34 to simplify the connection method of the support member 30.

[0135] According to one embodiment of this application, the support member 30 further includes a reinforcing rib 35, which is connected to the first support portion 31 and the second support portion 32.

[0136] In some examples, the stiffener 35 is connected to the first support portion 31 and the second support portion 32 located on different side beams 1111.

[0137] For example, the reinforcing rib 35 is connected to the first support segment 311 and the fourth support segment 322.

[0138] In some examples, such as Figure 5 , Figure 7 and Figure 8 As shown, the support member 30 includes a plurality of reinforcing ribs 35, which are spaced apart.

[0139] For example, at least one reinforcing rib 35 is connected to the first support segment 311 and the third support segment 321, and at least one reinforcing rib 35 is connected to the second support segment 312 and the fourth support segment 322.

[0140] The reinforcing rib 35 can increase the structural strength of the support 30, and also facilitate the uniform transmission of stress, thus extending the service life of the support 30.

[0141] See also Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of the structure of a battery device provided in an embodiment of this application. Figure 2 ; Figure 10This is a partial front view of a battery device provided in an embodiment of this application.

[0142] According to one embodiment of this application, such as Figure 9 and Figure 10 As shown, the housing 11 includes a support plate 113, which is connected to the frame and covers the receiving cavity 112. The support plate 113 is disposed opposite to the cover 20 along a first direction x. The battery device also includes a connector 40, which is disposed on the support plate 113 of the housing 11 furthest from the cover 20 along the first direction x. The connector 40 is used to fix the support plate 113 to the vehicle body.

[0143] Battery module 1 is connected to carrier plate 113, which is used to support battery module 1.

[0144] In some examples, two adjacent boxes 11 are locked and fixed to the support plate 113 by the frame 111.

[0145] Optionally, the battery assembly includes screws that connect to the frame 111 of one housing 11 and the support plate 113 of the other housing 11.

[0146] The connector 40 connects the bottommost support plate 113 along the first direction x to the vehicle body, thus fixing the battery device to the vehicle body as a whole. As the number of stacked boxes 11 increases, the requirements for the strength and connection stability of the bottom box 11 become higher. Therefore, by setting a support member 30 to support the box module 10, the gravity on the bottom box 11 is relieved, and the support member 30 assists in connecting to the vehicle body, thereby improving the overall connection stability between the battery device and the vehicle body.

[0147] See also Figure 11 and Figure 12 , Figure 11 yes Figure 10 Sectional view at AA; Figure 12 yes Figure 11 A magnified view of a portion of the image.

[0148] According to one embodiment of this application, as shown in the figure... Figures 9 to 12 As shown, the connector 40 includes a flange portion 41 and a connecting portion 42. The flange portion 41 is disposed at one end of the connecting portion 42 facing the cover 20 along the first direction x. The connecting portion 42 is embedded in the support plate 113, and the flange portion 41 is snapped onto the support plate 113.

[0149] Flange 41 is located at one end of connecting part 42. When connecting part 40 and bearing plate 113 are installed, flange 41 engages with end face of bearing plate 113 and is clamped with connecting part 42.

[0150] Optionally, the connecting part 42 is threaded into the support plate 113 to connect and fix the connecting part 40 to the support plate 113.

[0151] For example, the connecting part 42 is embedded in the mounting hole of the support plate 113, and the radial dimension of the mounting hole is smaller than the radial dimension of the flange part 41.

[0152] In some examples, flange 41 and connecting part 42 are integral structures; alternatively, flange 41 and connecting part 42 are separate structures.

[0153] In some examples, the connecting part 42 is used to connect to the vehicle body.

[0154] Optionally, the connecting part 42 passes through the portion of the support plate 113 away from the flange part 41 and connects to the vehicle body.

[0155] In some examples, flange 41 is used for connection to the vehicle body.

[0156] Optionally, the connecting part 42 can be a hollow structure, and part of the vehicle body structure passes through the connecting part 42 and connects to the flange part 41.

[0157] The connector 40 includes a flange portion 41 and a connecting portion 42, which enables the carrier plate 113 to have high connection stability with the vehicle body, effectively increases the anti-loosening and anti-fall-off performance of the connector 40, and simplifies the connection method between the carrier plate 113 and the vehicle body. It can realize directional connection from the vehicle body to the carrier plate 113, thereby simplifying the assembly and disassembly of the battery device and the vehicle body.

[0158] According to one embodiment of this application, such as Figure 11 and Figure 12 As shown, the connector 40 has a connecting hole 43, which passes through the flange portion 41 and the connecting portion 42. The flange portion 41 has threads around the inner wall surface of the connecting hole 43. This simplifies the installation method of the battery device and the vehicle body.

[0159] In some examples, bolts are passed through the connection hole 43 and bolted to the inner wall of the flange 41 to secure the support plate 113 to the vehicle body.

[0160] According to one embodiment of this application, the support plate 113 includes a plate body portion 1131 and a step portion 1132. The step portion 1132 protrudes from the plate body portion 1131 along a first direction x toward the cover 20. The connector 40 is embedded in and engaged with the plate body portion 1131. The step portion 1132 is used to restrict the rotation of the connector 40. The step portion 1132 limits the connector 40. During the installation of the support plate 113 onto the vehicle body, the step portion 1132 limits the connector 40, reducing the risk of the connector 40 rotating or loosening, so as to stably fix the support plate 113 to the vehicle body.

[0161] According to one embodiment of this application, the support plate 113 and the frame 111 are integrally formed. This helps to improve the structural strength of the enclosure.

[0162] In some examples, the support plate 113 and the frame 111 are integrally formed, that is, the box body is an integrally formed structure, such as an extruded profile box body or a cast box body.

[0163] In some examples, the enclosure is a sheet metal enclosure.

[0164] According to one embodiment of this application, the battery device includes a plurality of support members 30, which are circumferentially spaced along the frame 111. This increases the connection stability between the battery device and the vehicle body.

[0165] As an example, the frame 111 is generally rectangular, and the battery device includes four support members 30, which are respectively disposed at the four corners of the frame 111.

[0166] As an example, the frame 111 is generally rectangular, and the battery device includes two support members 30, which are respectively disposed at two opposite corners of the frame 111.

[0167] According to one embodiment of this application, the battery device includes a plurality of support members 30, and at least two of the housings 11 have at least one support member 30 on their sidewalls 111. Multi-point support along the first direction x effectively reduces the risk of center of gravity shift caused by housing stacking, further improving the reliability of the battery device.

[0168] As an example, along the first direction x, both the middle box 11 and the box 11 closest to the cover 20 are provided with at least one support member 30.

[0169] Secondly, this application provides a vehicle that includes a plurality of battery devices as described above and a vehicle body (not shown in the figure), with a support member 30 connected to the vehicle body.

[0170] In some examples, the support 30 is detachably connected to the vehicle body.

[0171] As an example, the support member 30 includes a first support portion 31 and a second support portion 32. At least a portion of the first support portion 31 extends along a first direction x. The first support portion 31 is bolted to two adjacent side beams 1111. The second support portion 32 is connected to one end of the first support portion 31 and bends along a direction perpendicular to the first direction x. The second support portion 32 is bolted to the vehicle body.

[0172] The vehicle provided in this application has a support member 30 that provides support for the housing module 10, which can reduce the center of gravity shift caused by the stacking of housings, improve the risk of tilting and shaking, and make the battery device stably installed in the vehicle body.

[0173] According to one embodiment of this application, the vehicle also includes bolts that are threadedly connected to the connector 40 of the battery device, and the support plate 113 of the housing 11 is fixed to the vehicle body by the connector 40 and the bolts.

[0174] As an example, the connector 40 includes a flange portion 41 and a connecting portion 42. The flange portion 41 is disposed at one end of the connecting portion 42 facing the cover 20 along a first direction x. The connecting portion 42 is embedded in the support plate 113, and the flange portion 41 is snapped onto the support plate 113. The connector 40 has a connecting hole 43 that passes through the flange portion 41 and the connecting portion 42. The flange portion 41 has threads around the inner wall surface of the connecting hole 43. Bolts pass through at least a portion of the vehicle body and the connecting hole 43 and are threaded to the inner wall surface of the flange portion 41 to fix the housing 11 to the vehicle body.

[0175] According to some embodiments of this application, see Figures 2 to 12 A battery device, comprising a housing module 10, a cover 20, and a plurality of support members 30.

[0176] The housing module 10 includes multiple housings 11 stacked along a first direction x. Each housing 11 includes a frame 111 with a receiving cavity 112 for accommodating a battery module 1. The frame 111 includes multiple side beams 1111 connected end-to-end. A support plate 113 is connected to the frame and covers the receiving cavity 112. The support plate 113 is disposed opposite to the cover 20 along the first direction x. The support plate 113 includes a plate portion 1131 and a stepped portion 1132, the stepped portion 1132 protruding from the plate portion 1131 toward the cover 20 along the first direction x.

[0177] The cover 20 covers one end of the box module 10 along the first direction x.

[0178] Multiple support members 30 are spaced apart circumferentially along the frame 111. The support members 30 are separated from the housing 11 furthest from the cover 20 along the first direction x, and the support members 30 are configured to connect the frame 111 to the vehicle body. The support members 30 are detachably connected to the frame 111.

[0179] The support member 30 includes a first support portion 31, a second support portion 32, and a reinforcing rib 35. At least a portion of the first support portion 31 extends along a first direction x and is connected to two adjacent side beams 1111. The second support portion 32 is connected to the first support portion 31 and extends along a plane perpendicular to the first direction x. The second support portion 32 is configured to connect to the vehicle body. The first support portion 31 includes a first support segment 311 and a second support segment 312, which are respectively connected to two adjacent side beams 1111 and are perpendicularly arranged. The second support portion 32 includes a third support segment 321 and a fourth support segment 322, where the third support segment 321 is connected to the first support segment 311 and extends along a plane perpendicular to the first direction x, and the fourth support segment 322 is connected to the second support segment 312 and extends along a plane perpendicular to the first direction x. The third support segment 321 and the fourth support segment 322 are respectively used for connection to the vehicle body. The connection between the third support section 321 and the fourth support section 322 is provided with an arc-shaped chamfer 33. The second support part 32 is provided with a through hole 34 for connection with the vehicle body. The reinforcing rib 35 connects the first support part 31 and the second support part 32.

[0180] A connector 40 is disposed on the support plate 113 of the housing 11 furthest from the cover 20 along the first direction x, and the connector 40 is used to fix the support plate 113 to the vehicle body. The connector 40 includes a flange portion 41 and a connecting portion 42. The flange portion 41 is disposed at one end of the connecting portion 42 facing the cover 20 along the first direction x, and the connecting portion 42 is embedded in the plate portion 1131, and the flange portion 41 is snapped into the plate portion 1131. The connector 40 is provided with a connecting hole 43, which passes through the flange portion 41 and the connecting portion 42; the flange portion 41 is threaded around the inner wall surface of the connecting hole 43. The stepped portion 1132 is used to restrict the rotation of the connector 40.

[0181] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a box module comprising a plurality of boxes stacked along a first direction, the boxes comprising a frame having a receiving cavity for receiving a battery module; a cover covering one end of the box module along the first direction, a support provided outside the frame of at least one of the boxes and away from the box farthest from the cover along the first direction, the support being configured to connect the frame to a vehicle body.

2. The battery device according to claim 1, wherein the support is detachably connected to the frame.

3. The battery device according to claim 1, wherein the frame comprises a plurality of side beams connected end to end, and the support is connected to two adjacent side beams.

4. The battery device according to claim 3, wherein the support comprises a first support portion and a second support portion, at least part of the first support portion extending along the first direction, the first support portion being connected to two adjacent side beams, and the second support portion being connected to the first support portion and extending along a plane perpendicular to the first direction, the second support portion being configured to be connected to the vehicle body.

5. The battery device according to claim 4, wherein the first support portion comprises a first support segment and a second support segment, the first support segment and the second support segment being connected to two adjacent side beams respectively, and the first support segment and the second support segment being arranged perpendicularly.

6. The battery device according to claim 5, wherein the second support portion comprises a third support segment and a fourth support segment, the third support segment being connected to the first support segment and extending along a plane perpendicular to the first direction, and the fourth support segment being connected to the second support segment and extending along a plane perpendicular to the first direction, the third support segment and the fourth support segment being configured to be connected to the vehicle body respectively.

7. The battery device according to claim 4, wherein the second support portion is provided with a through hole for being connected to the vehicle body.

8. The battery device according to claim 4, wherein the support further comprises a reinforcing rib connected to the first support portion and the second support portion.

9. The battery device according to claim 1, wherein the box comprises a bearing plate connected to the frame and covering the receiving cavity, the bearing plate being arranged opposite to the cover along the first direction; the battery device further comprises a connecting member arranged at the bearing plate of the box farthest from the cover along the first direction, the connecting member being configured to fix the bearing plate to a vehicle body.

10. The battery device according to claim 9, wherein the connecting member comprises a flange portion and a connecting portion, the flange portion being arranged at one end of the connecting portion along the first direction toward the cover, the connecting portion being embedded in the bearing plate, and the flange portion being clamped to the bearing plate.

11. The battery device according to claim 10, wherein the connecting member is provided with a connecting hole penetrating through the flange portion and the connecting portion. The flange portion is provided with a thread around an inner wall surface of the connecting hole. 12.The battery device according to claim 10, characterized in that, The carrier plate comprises a plate body portion and a step portion, the step portion protrudes from the plate body portion toward the cover body in the first direction, the connecting member is embedded in and clamped to the plate body portion, and the step portion is used to limit rotation of the connecting member. 13.The battery device according to claim 9, characterized in that, The carrier plate and the frame are integrally formed. 14.The battery device according to claim 1, characterized in that, The battery device comprises a plurality of the support members, and the plurality of support members are arranged at intervals in a circumferential direction of the frame; and / or, The battery device comprises a plurality of the support members, and the frame of at least two of the battery boxes is provided with the support members.

15. A vehicle characterized by comprising: comprise: a plurality of the battery devices according to any one of claims 1 to 14; and a vehicle body, and the support members are connected to the vehicle body. 16.The vehicle according to claim 15, characterized in that, The vehicle further comprises a bolt, the bolt is threadedly connected with the connecting member of the battery device, and the carrier plate of the battery box is fixed to the vehicle body through the connecting member and the bolt. ​

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