Battery device and vehicle

Abstract

The utility model discloses a battery device and a vehicle. The battery device comprises a battery monomer and a battery pack, the box body comprises a frame and a mounting beam, the frame is provided with a first accommodating space for accommodating the battery monomers, and the mounting beam is arranged in the first accommodating space and is fixedly connected with the frame; and the support is connected to the mounting beam, the support is configured to be mounted on a chassis frame of the vehicle, and the box body protrudes out of the chassis frame in the first direction. Therefore, the mounting beam is arranged in the frame of the battery device, and the bracket is arranged on the mounting beam, so that the battery device can be mounted on the chassis frame through the bracket, additional large parts such as a tray are not needed, and the assembly difficulty of the vehicle and the cost of the electric vehicle are reduced; the box body protrudes out of the chassis frame in the width direction of the chassis frame, the space utilization rate of the bottom of the chassis frame is improved, the battery device can contain more single batteries, and therefore the electric quantity of the battery device is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery device and a vehicle. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. And for electric vehicles, battery technology is a crucial factor in their development.

[0003] In related technologies, electric vehicles include a chassis frame. Due to the size mismatch between the chassis frame and the battery unit, the battery unit often needs to be installed on the chassis frame using a tray or other device. Installing the battery unit using a tray not only increases the number of parts in the electric vehicle and increases the assembly difficulty, but also increases the cost of the electric vehicle. Utility Model Content

[0004] This application provides a battery device and a vehicle that can reduce the number of vehicle parts and lower the cost of the vehicle.

[0005] The battery device according to the embodiments of this application includes:

[0006] Battery cell;

[0007] The housing includes a frame and a mounting beam. The frame has a first receiving space for accommodating the individual battery cells. The mounting beam is disposed in the first receiving space and fixedly connected to the frame.

[0008] A bracket, connected to the mounting beam, configured to be mounted on the chassis frame of the vehicle, wherein the width direction of the chassis frame is defined as a first direction, and the housing protrudes from the chassis frame along the first direction.

[0009] The battery device of this application embodiment has a mounting beam set inside the frame and a bracket set on the mounting beam. In this way, the battery device can be mounted on the chassis frame by the bracket, without the need for additional large parts such as pallets, which reduces the assembly difficulty of the vehicle and the cost of electric vehicles. In addition, the box protrudes from the chassis frame along the width direction of the chassis frame, which improves the space utilization at the bottom of the chassis frame, allowing the battery device to accommodate more battery cells, thereby increasing the battery capacity of the battery device.

[0010] In some embodiments, the length direction of the mounting beam is the same as the first direction. In the above embodiments, the length direction of the mounting beam is the same as the width direction of the chassis frame, which allows the bracket to be fixed at different positions in the first direction of the mounting beam. The width of the chassis frame does not need to match the maximum size of the battery pack, and it can be adapted to chassis frames of different widths, thus improving the compatibility between the battery pack and the chassis frame.

[0011] In some embodiments, there are multiple mounting beams, which are spaced apart along a second direction, and at least two of the mounting beams are provided with brackets. The second direction is perpendicular to the first direction. In the above embodiments, at least two mounting beams are provided with brackets, so there can also be multiple brackets, and the multiple brackets are spaced apart. This allows the brackets to have multiple connection points with the chassis frame, improving the stability of the connection between the battery device and the chassis frame.

[0012] In some embodiments, the brackets on at least two of the mounting beams are configured to be mounted on the outer side of the chassis frame along its width. In the above embodiments, the outer side of the chassis frame in the width direction has greater operating space, making it easier to mount the brackets onto the chassis frame and improving the installation efficiency of the battery device.

[0013] In some embodiments, the number of brackets on the mounting beam is multiple, and the multiple brackets are arranged at intervals along the length of the mounting beam, with each bracket mounted on two opposite outer sides of the chassis frame. In the above embodiments, the multiple brackets on each mounting beam can be mounted on two opposite outer sides of the chassis frame, which can improve the stability of the battery device installation and is beneficial to improving the performance of the battery device.

[0014] In some embodiments, all of the mounting beams are equipped with brackets, and each mounting beam has two brackets, which are symmetrically arranged. In the above embodiments, the symmetrical arrangement of the two brackets on each mounting beam not only facilitates bracket installation but also ensures a more balanced force distribution on the battery device after it is mounted on the chassis frame, thus improving the stability of the battery device installation.

[0015] In some embodiments, the number of battery cells is multiple, and at least some of the battery cells are arranged along the first direction. Each battery cell includes a first outer surface, which is the surface with the largest area among the outer surfaces of the battery cell. The first outer surface faces the mounting beam and abuts against the mounting beam. In the above embodiments, the mounting beam can apply action or reaction forces to the first outer surface of the battery cell, thereby reducing the expansion deformation of the battery cell along the first direction and improving the performance of the battery cell.

[0016] In some embodiments, the frame includes two first side beams and two second side beams, the first side beams connecting the two second side beams, the two first side beams being spaced apart along the second direction, each second side beam connecting the two first side beams, and each mounting beam connecting the two second side beams, with a second accommodating space formed between one of the mounting beams and one of the first side beams. In the above embodiments, the second accommodating space can be used to accommodate other components of the battery device, enabling the battery device to function normally.

[0017] In some embodiments, the battery device includes a connecting strip that connects multiple mounting beams. In the above embodiments, the connecting strip can further restrict the position and strength of the multiple mounting beams, improving the stability of the connection between the bracket and the chassis frame.

[0018] In some embodiments, the housing includes a base plate connected to the frame, the mounting beam includes a top surface facing away from the base plate, and the bracket is mounted on the top surface. In the above embodiments, the bracket can be located at the top of the battery device, facilitating connection between the bracket and the mounting beam and reducing interference between the bracket and the individual battery cells.

[0019] In some embodiments, the battery device includes a fastening assembly connecting the mounting beam and the bracket to secure the bracket to the mounting beam. In the above embodiments, the fastening assembly improves the stability of the connection between the bracket and the mounting beam and facilitates the installation of the bracket on the mounting beam.

[0020] In some embodiments, the fastening assembly includes a bolt and a nut, the bolt passing through the base plate, the mounting beam, and the bracket, the nut being screwed onto the bolt, the head of the bolt abutting against the bracket, and the nut abutting against the base plate. In the above embodiments, the bolt has sufficient strength to improve the stability of the bracket mounted on the chassis frame and facilitates the connection of the bracket to the mounting beam, thereby improving the assembly efficiency of the battery device.

[0021] In some embodiments, the bracket includes a mounting portion and a mounting portion bent relative to the mounting portion, the mounting portion being connected to the mounting beam, and the mounting portion being configured to be mounted on the chassis frame. In the above embodiments, the mounting portion and the mounting portion facilitate easy mounting of the bracket to the chassis frame after it is connected to the mounting beam.

[0022] In some embodiments, the housing further includes a top plate opposite the bottom plate, the top plate covering the top surface, and the support located on the side of the top plate opposite to the top surface. In the above embodiments, the top plate can seal the first receiving chamber, reducing the entry of foreign objects such as moisture and particulate matter into the housing, thereby improving the safety of the battery device.

[0023] In some embodiments, the thickness of the frame is less than or equal to the thickness of the mounting beam. In the above embodiments, the smaller frame thickness results in a smaller overall outer dimension of the battery device, reducing the space occupied by the casing and increasing the energy density of the battery device.

[0024] In some embodiments, the thickness of the mounting beam is H1, where 30mm ≤ H1 ≤ 45mm. In the above embodiments, the thickness of the mounting beam can meet the connection strength requirements with the bracket, reduce the internal space occupied by the housing, and improve the energy density of the battery device.

[0025] In some embodiments, the thickness of the frame is H2, where 20mm ≤ H2 ≤ 30mm. In the above embodiments, the thickness of the frame occupies less space in the battery device, which can improve the energy density of the battery device.

[0026] In some embodiments, the height direction of the chassis frame is defined as the third direction, and the number of battery cells is multiple. The multiple battery cells are distributed in one or two layers along the third direction. When the battery cells are distributed in one layer, the battery cells are located on one side of the chassis frame along the third direction.

[0027] When the battery cells are stacked in two layers, one layer of the battery cells is embedded in the chassis frame, and the other layer of the battery cells is located on one side of the chassis frame along the third direction.

[0028] In the above embodiments, when the battery cells are distributed in a single layer, it is convenient to manage the battery cells; when the battery cells are stacked in two layers, the battery device can have a larger capacity. In addition, one layer of the battery cells is embedded in the chassis frame, which can improve the compactness of the chassis frame and the battery device.

[0029] In some embodiments, the height direction of the chassis frame is defined as the third direction, and the battery device further includes an electrical compartment. The electrical compartment and the battery cells are distributed along the third direction, and the battery cells are located on one side of the chassis frame along the third direction. The electrical compartment is embedded in the chassis frame.

[0030] In the above embodiment, the electrical compartment is embedded in the chassis frame, which can make full use of the space of the chassis frame and improve the space utilization rate of the bottom of the chassis frame.

[0031] The vehicle described in this application includes:

[0032] Chassis frame; and

[0033] The battery device described in any of the above embodiments is mounted on the chassis frame via the bracket.

[0034] In some embodiments, the chassis frame includes two opposing longitudinal beams arranged opposite each other along the first direction, and the bracket is mounted on the two longitudinal beams.

[0035] In the above embodiment, the longitudinal beam has high strength and sufficient installation space to install the battery device, making it easier to mount the battery device on the chassis frame.

[0036] In some embodiments, the longitudinal beams are integral structures. In the above embodiments, the longitudinal beam structure is simple, which helps to reduce the manufacturing cost of the chassis frame.

[0037] 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

[0038] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0039] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0040] Figure 2 This is a partial perspective view of a vehicle according to some embodiments of this application;

[0041] Figure 3This is a partial structural diagram of a vehicle according to some embodiments of this application;

[0042] Figure 4 This is a perspective view of a battery device according to some embodiments of this application;

[0043] Figure 5 This is another perspective view of a battery device according to some embodiments of this application;

[0044] Figure 6 This is a perspective view of the housing of a battery device according to some embodiments of this application;

[0045] Figure 7 A perspective view of a battery cell according to some embodiments of this application;

[0046] Figure 8 for Figure 5 An enlarged schematic diagram of part A;

[0047] Figure 9 This is a bottom view schematic diagram of a battery device according to some embodiments of this application;

[0048] Figure 10 This is a plan view of a vehicle according to some embodiments of this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 100-Battery assembly; 10-Battery cell; 11-First outer surface; 12-Second outer surface; 20-Box; 21-Frame; 211-First accommodating space; 212-First side beam; 213-Second side beam; 214-Second accommodating space; 22-Mounting beam; 221-Top surface; 23-Bottom plate; 24-Top plate; 30-Bracket; 31-Mounting part; 32-Mounting part; 40-Connecting strip; 50-Fastening assembly; 51-Bolt; 52-Nut; 60-Electrical compartment; 200-Controller; 300-Motor; 400-Chassis frame; 410-Outer side; 420-Longitudinal beam; 430-Connecting beam; 1000-Vehicle. Detailed Implementation

[0051] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0053] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0054] In this document, the term "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 throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0055] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0056] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0057] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0058] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0059] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. And for electric vehicles, battery technology is a crucial factor in their development.

[0060] In related technologies, electric vehicles include a chassis frame. Due to the size mismatch between the chassis frame and the battery unit, for example, the width of the chassis frame is smaller than the width of the battery unit, the battery unit often needs to be installed on the chassis frame using a tray or other device. Installing the battery unit using a tray not only increases the number of parts in the electric vehicle and increases the assembly difficulty, but also increases the cost of the electric vehicle.

[0061] Therefore, this application provides a battery device, which includes a battery cell, a housing, and a bracket. The housing includes a frame and a mounting beam. The frame has a first accommodating space for accommodating the battery cell. The mounting beam is disposed in the first accommodating space and fixedly connected to the frame. The bracket is connected to the mounting beam and is configured to be mounted on the chassis frame of a vehicle. The width direction of the chassis frame is defined as a first direction, and the housing protrudes from the chassis frame along the first direction.

[0062] The battery device of this application embodiment has a mounting beam set inside the frame and a bracket set on the mounting beam. In this way, the battery device can be mounted on the chassis frame by the bracket, without the need for additional large parts such as pallets, which reduces the assembly difficulty of the vehicle and the cost of electric vehicles. In addition, the box protrudes from the chassis frame along the width direction of the chassis frame, which improves the space utilization at the bottom of the chassis frame, allowing the battery device to accommodate more battery cells, thereby increasing the battery capacity of the battery device.

[0063] Please refer to Figure 1This application embodiment provides a battery device that can be used in a vehicle 1000. The vehicle 1000 can be a new energy vehicle, such as a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle. Further, the vehicle 1000 can be a commercial vehicle, such as a light truck. 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.

[0064] 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.

[0065] Please see Figures 2-5 The battery device 100 of this application includes a battery cell 10, a housing 20 and a bracket 30. The housing 20 includes a frame 21 and a mounting beam 22. The frame 21 has a first accommodating space 211 for accommodating the battery cell 10. The mounting beam 22 is disposed in the first accommodating space 211 and fixedly connected to the frame 21. The bracket 30 is connected to the mounting beam 22 and is configured to be mounted on the chassis frame 400 of the vehicle 1000. The width direction of the chassis frame 400 is defined as the first direction X. The housing 20 protrudes from the chassis frame 400 along the first direction X.

[0066] Specifically, in the battery device 100, there can be multiple battery cells 10. These multiple battery cells 10 can be connected in series, in parallel, or in a mixed manner. A mixed connection means that the multiple battery cells 10 are connected in both series and parallel. The multiple battery cells 10 can be directly connected in series, in parallel, or in a mixed manner, and then the whole assembly of the multiple battery cells 10 is housed in the housing 20.

[0067] Of course, the battery device 100 can also be a battery module composed of multiple battery cells 10 connected in series, parallel, or in a mixed configuration, and then the multiple battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is housed within the housing 20. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between multiple battery cells 10.

[0068] The battery cell 10 may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and this application embodiment is not limited to this. The battery cell 10 may be cylindrical, flat, cuboid, or other shapes, etc., and this application embodiment is not limited to this. The battery cell 10 is generally divided into three types according to the packaging method: cylindrical battery cell 10, square battery cell 10, and pouch battery cell 10, and this application embodiment is not limited to this.

[0069] The battery device 100 mentioned in the embodiments of this application refers to a single physical module that includes one or more battery cells 10 to provide higher voltage and capacity. For example, the battery device 100 mentioned in this application may include a battery module or a battery pack, etc.

[0070] The battery cell 10 includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell 10 primarily operates by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The current collector without the positive active material layer protrudes beyond the current collector with the positive active material layer, and serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The current collector without the negative active material layer protrudes beyond the current collector with the negative active material layer, and serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that the membrane does not melt when carrying a large current, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together. The diaphragm material can be PP (polypropylene) or PE (polyethylene), etc.

[0071] The housing 20 provides a space for the battery cells 10, and the housing 20 can be square or similar in shape. The frame 21 of the housing 20 is an outer part of the housing 20, which protects the battery cells 10 and reduces the impact on the battery cells 10 from external forces. The frame 21 can be made of high-strength materials such as metal, thereby improving the stability of the housing 20.

[0072] The housing 20 protrudes from the chassis frame 400 along the first direction X, that is to say, the dimension of the housing 20 along the first direction X is greater than the width of the chassis frame 400.

[0073] The two ends of the mounting beam 22 are connected to the two inner walls of the frame 21, respectively. For example, the mounting beam 22 can be connected to the frame 21 by welding, threaded connection, or other methods, making the connection between the mounting beam 22 and the frame 21 more stable. The mounting beam 22 can be made of high-strength materials such as aluminum alloy or steel, thereby improving the load-bearing capacity of the mounting beam 22.

[0074] The bracket 30 connects the mounting beam 22 and the chassis frame 400, allowing the battery device 100 to be mounted on the chassis frame 400 via the bracket 30. The bracket 30 and chassis frame 400 can be fixed together by welding, threaded connection, or other methods, resulting in a more stable connection. Since the mounting beam 22 is located within the frame 21, its position is within the dimensions enclosed by the frame 21, thus placing the bracket 30 within the dimensions enclosed by the frame 21. After the bracket 30 is connected to the chassis frame 400, the frame 21 can protrude beyond the chassis frame 400; that is, the housing 20 can protrude beyond the chassis frame 400 along its width.

[0075] Since the frame 21 does not need to be connected to the chassis frame 400, the size of the box 20 can be decoupled from the width of the chassis frame 400. By setting the positions of the mounting beam 22 and the bracket 30, the battery device 100 can adapt to chassis frames 400 of various widths, with a high degree of adaptability. For example, the battery device 100 can be matched with a narrow chassis frame 400. The structure of the chassis frame 400 of the vehicle 1000 does not need to be modified too much, saving costs.

[0076] Therefore, the battery device 100 of this embodiment provides a mounting beam 22 within the frame 21 and a bracket 30 on the mounting beam 22. This allows the battery device 100 to be mounted on the chassis frame 400 via the bracket 30, eliminating the need for additional large parts such as a pallet, and reducing the assembly difficulty and cost of the electric vehicle 1000. Furthermore, the housing 20 protrudes from the chassis frame 400 along its width, improving the space utilization at the bottom of the chassis frame 400, allowing the battery device 100 to accommodate more battery cells 10, thereby increasing the battery capacity of the battery device 100.

[0077] In some embodiments, the length direction of the mounting beam 22 is the same as the first direction X. In the above embodiments, the length direction of the mounting beam 22 is the same as the width direction of the chassis frame 400, which allows the bracket 30 to be fixed at different positions on the mounting beam 22 in the first direction X. The width of the chassis frame 400 does not need to match the maximum size of the battery pack 20, and it can be adapted to chassis frames 400 of different widths, thus improving the compatibility between the battery pack 100 and the chassis frame 400.

[0078] Please see Figure 5 and Figure 6 In some embodiments, there are multiple mounting beams 22, which are arranged at intervals along the second direction Y. At least two mounting beams 22 are provided with brackets 30, and the second direction Y is perpendicular to the first direction X.

[0079] Specifically, the number of mounting beams 22 can be 2, 3, 4, 5, etc. Supports 30 can be installed on 2 of the mounting beams 22, or on all of the mounting beams 22, or on any number of mounting beams 22. The second direction Y can be perpendicular to the overall thickness or height direction of the battery device 100.

[0080] The thickness or height of the battery unit 100 is the vertical direction of the battery unit 100 under normal use. Thus, at least two mounting beams 22 are equipped with brackets 30, allowing for multiple brackets 30 spaced apart. This provides multiple connection points between the brackets 30 and the chassis frame 400, improving the stability of the connection between the battery unit 100 and the chassis frame 400.

[0081] Please see Figure 2 and Figure 3 In some embodiments, the brackets 30 on at least two mounting beams 22 are configured to be mounted on the outer side 410 of the chassis frame 400 along its width direction. Specifically, the chassis frame 400 may have a rectangular beam structure, with the length of the chassis frame 400 being the same as the length of the vehicle 1000, and the width of the chassis frame 400 being the same as the width of the vehicle 1000. The outer side 410 of the chassis frame 400 in the width direction is the surface facing outwards from the vehicle 1000 along the width direction of the vehicle 1000.

[0082] Thus, the outer side 410 of the chassis frame 400 in the width direction has a larger operating space, making it easier to mount the bracket 30 on the chassis frame 400 and increasing the installation efficiency of the battery device 100.

[0083] Please see Figure 2 , Figure 3 and Figure 5 In some embodiments, there are multiple brackets 30 on the mounting beam 22, and the multiple brackets 30 are arranged at intervals along the length of the mounting beam 22. The multiple brackets 30 are respectively mounted on two opposite outer sides 410 of the chassis frame 400.

[0084] Specifically, the number of supports 30 on the mounting beam 22 can be 2, 3, 4, etc. The length direction of the mounting beam 22 is the direction in which the dimensions of the mounting beam 22 are longest, and the second direction Y mentioned above can be the thickness direction of the mounting beam 22. In this embodiment, the number of supports 30 on the mounting beam 22 is 2. The two supports 30 are respectively mounted on the two opposite outer sides 410 of the chassis frame 400, or in other words, the chassis frame 400 is sandwiched between the two supports 30. When there are more than or equal to 3 supports 30 on the mounting beam 22, at least 2 supports 30 are arranged along the second direction Y.

[0085] Thus, multiple brackets 30 on each mounting beam 22 can be mounted on two opposite outer sides 410 of the chassis frame 400, which can improve the stability of the battery device 100 installation and improve the performance of the battery device 100.

[0086] Please see Figure 5 In some embodiments, all the mounting beams 22 are provided with supports 30, and each mounting beam 22 has two supports 30, which are symmetrically arranged. As mentioned above, the first direction X can be the length direction of the mounting beam 22, and the second direction Y can be the thickness direction of the mounting beam 22. The two supports 30 on each mounting beam 22 are arranged along the length direction of the mounting beam 22. Therefore, the two supports 30 on each mounting beam 22 are symmetrically distributed on both sides of a straight line extending along the second direction Y.

[0087] Thus, all mounting beams 22 are equipped with brackets 30, which makes full use of the brackets 30 and reduces redundant parts in the battery unit 100. The two brackets 30 on each mounting beam 22 are symmetrically arranged, which not only makes the brackets 30 easy to install, but also makes the force on the battery unit 100 after it is mounted on the chassis frame 400 through the brackets 30 more balanced, which helps to improve the stability of the battery unit 100 installation.

[0088] Please see Figure 5 and Figure 7 In some embodiments, the number of battery cells 10 is multiple, with at least some of the battery cells 10 arranged along the second direction Y. Each battery cell 10 includes a first outer surface 11, which is the surface with the largest area among the outer surfaces 410 of the battery cell 10. The first outer surface 11 faces and abuts against the mounting beam 22. Specifically, the battery cells 10 can be arranged in multiple rows, with each row including multiple battery cells 10, and the multiple battery cells 10 in each row arranged along the second direction Y. In this way, multiple battery cells 10 can increase the electrical capacity of the battery device 100.

[0089] The battery cell 10 may further include a second outer surface 12, which is connected to the first outer surface 11, and the area of ​​the second outer surface 12 is smaller than the area of ​​the first outer surface 11. The second outer surface 12 may be perpendicular to the first outer surface 11.

[0090] The first outer surface 11 faces and abuts against the mounting beam 22; in other words, the first outer surface 11 of the battery cell 10 near the mounting beam 22 can abut against the mounting beam 22. Since the battery cell 10 expands and deforms during use, the deformation towards the outer side 410 is greater. Therefore, the mounting beam 22 can apply an action or reaction force to the first outer surface 11 of the battery cell 10, thereby reducing the expansion deformation of the battery cell 10 along the second direction Y and improving the performance of the battery cell 10.

[0091] Please see Figure 6 In some embodiments, the frame 21 includes two first side beams 212 and two second side beams 213. The first side beams 212 are connected to the two second side beams 213. The two first side beams 212 are spaced apart along the second direction Y. Each second side beam 213 is connected to the two first side beams 212. Each mounting beam 22 is connected to the two second side beams 213. A second accommodating space 214 is formed between one of the mounting beams 22 and one of the first side beams 212.

[0092] Specifically, the two first side beams 212 and the two second side beams 213 allow the frame 21 to have a circumferentially continuous structure, thereby improving the strength of the housing 20 and thus improving the performance of the battery device 100. The second accommodating space 214 is isolated from the first accommodating space 211 and is cuboid in shape. The second accommodating space 214 can accommodate components of the battery device 100 such as the battery monitoring unit and water-cooling connector. Therefore, the second accommodating space 214 can also accommodate other components of the battery device 100, enabling the battery device 100 to operate normally.

[0093] Please see Figure 5 In some embodiments, the battery device 100 includes a connecting strip 40 that connects to multiple mounting beams 22. Specifically, the connecting strip 40 is a flat strip. The connecting strip 40 can be made of materials such as metal. The connecting strip 40 has a connection point with each mounting beam 22, and the connecting strip 40 can be fixed to the mounting beam 22 by means of threads, welding, or other methods. The connecting strip 40 presses against the battery cell 10, thereby fixing and pressing the battery cell 10 and reducing the positional movement of the battery cell 10. In this way, the connecting strip 40 can further restrict the position and strength of the multiple mounting beams 22, improve the stability of the connection between the bracket 30 and the chassis frame 400, and thus improve the positional stability of the battery cell 10.

[0094] Please see Figure 5 In some embodiments, there are multiple connecting strips 40, which are spaced apart along the length of the mounting beam 22. Multiple connecting strips 40 can further increase the strength of the mounting beam 22, thereby improving the stability of the connection between the bracket 30 and the chassis frame 400.

[0095] Please see Figure 6 , Figure 8 and Figure 9 In some embodiments, the housing 20 includes a base plate 23 connected to the frame 21, and the mounting beam 22 includes a top surface 221 facing away from the base plate 23, with a bracket 30 mounted on the top surface 221. Specifically, the base plate 23 of the housing 20 can support the battery cell 10, stabilizing the position of the battery cell 10. The bracket 30 is mounted on the top surface 221 of the mounting beam 22, allowing the bracket 30 to be located at the top of the battery device 100, facilitating the connection between the bracket 30 and the mounting beam 22, and reducing interference between the bracket 30 and the battery cell 10.

[0096] Please see Figure 5 and Figure 8 In some embodiments, the battery device 100 includes a fastening assembly 50 that connects the mounting beam 22 and the bracket 30 to secure the bracket 30 to the mounting beam 22. Thus, the fastening assembly 50 improves the stability of the connection between the bracket 30 and the mounting beam 22 and makes it easier to install the bracket 30 onto the mounting beam 22.

[0097] Please see Figure 5 , Figure 8 and Figure 9 In some embodiments, the fastening assembly 50 includes a bolt 51 and a nut 52. The bolt 51 passes through the base plate 23, the mounting beam 22 and the bracket 30, and the nut 52 is screwed onto the bolt. The head 511 of the bolt 51 abuts against the bracket 30, and the nut 52 abuts against the base plate 23.

[0098] Specifically, when bolt 51 can be a single-headed bolt, the head 511 of bolt 51 abuts against bracket 30, and bracket 30 is sandwiched between the top surface 221 of mounting beam 22 and the head 511 of bolt 51. Since the battery device 100 is mounted on the chassis frame 400 via bracket 30, bracket 30 is mainly subjected to the gravity of battery device 100, or in other words, bracket 30 is subjected to a downward force.

[0099] Bolt 51 passes through the mounting beam 22 and the bracket 30, therefore, the axis of bolt 51 is the same as the direction of gravity. Due to the high tensile strength of bolt 51, it works together with the bracket 30 to bear the weight of the battery device 100. Therefore, bolt 51 has sufficient strength to improve the stability of the bracket 30 mounted on the chassis frame 400, and makes it easier to connect the bracket 30 to the mounting beam 22, thus improving the assembly efficiency of the battery device 100.

[0100] Of course, in other embodiments, the head 511 of the bolt 51 can abut against the base plate 23, and the bracket 30 is located between the mounting beam 22 and the nut 52.

[0101] In some embodiments, the bracket 30 can be fixedly connected to the mounting beam 22 by welding or other methods.

[0102] Please see Figure 8 In some embodiments, the bracket 30 includes a mounting portion 31 and a mounting portion 32 bent relative to the mounting portion 31. The mounting portion 31 is connected to the mounting beam 22, and the mounting portion 32 is configured to be mounted on the chassis frame 400.

[0103] Specifically, both the mounting section 31 and the mounting section 32 are sheet-like. The mounting section 31 and the mounting section 32 can be bent at right angles. The mounting section 31 and the mounting section 32 can be made from the same metal sheet, formed through a bending process to improve the overall strength of the bracket 30. The mounting section 32 can be connected to the chassis frame 400 by welding, threaded connection, or other methods. Thus, the mounting section 31 and the mounting section 32 facilitate the easy mounting of the bracket 30 onto the chassis frame 400 after it is connected to the mounting beam 22.

[0104] In some embodiments, bolt 51 passes through mounting portion 31.

[0105] Please see Figure 4 and Figure 8 In some embodiments, the housing 20 further includes a top plate 24 opposite to the bottom plate 23, the top plate 24 covering the top surface 221, and a bracket 30 located on the side of the top plate 24 away from the top surface 221. Specifically, the top plate 24 and the frame 21 can be connected by fasteners, and the top plate 24 can cover the battery cell 10. The bracket 30 is located on the side of the top plate 24 away from the top surface 221, that is, the bracket 30 can be located on the outside of the housing 20. In this way, the top plate 24 can seal the first receiving space 211, reducing the entry of foreign objects such as moisture and particulate matter into the housing 20, thereby improving the safety of the battery device 100.

[0106] In some embodiments, the thickness of the frame 21 is less than or equal to the thickness of the mounting beam 22. The thickness of the frame 21 is a dimension in the overall length or width direction of the battery device 100. In related technologies, the battery device 100 can be mounted on the chassis frame 400 via the frame 21. To improve the strength of the frame 21 and provide a mounting structure, the thickness of the frame 21 is set to a larger dimension, thereby increasing the overall length or width of the battery device 100. However, in the embodiments of this application, the thickness of the frame 21 is smaller, resulting in a smaller overall outer contour dimension of the battery device 100, reducing the space occupied by the housing 20 on the battery device 100, and increasing the energy density of the battery device 100.

[0107] Please see Figure 6 In some embodiments, the thickness of the mounting beam 22 is H1, where 30mm ≤ H1 ≤ 45mm. For example, H1 can be 30mm, 32mm, 35mm, 40mm, 45mm, etc. In the above embodiments, the thickness of the mounting beam 22 can meet the connection strength requirements with the bracket 30, and reduce the internal space occupied by the housing 20, thereby increasing the energy density of the battery device 100.

[0108] Please see Figure 6 In some embodiments, the thickness of the frame 21 is H2, where 20mm ≤ H2 ≤ 30mm. For example, H2 can be 20mm, 22mm, 25mm, 28mm, 30mm, etc. In the above embodiments, the thickness of the frame 21 occupies less space in the battery device 100, which can improve the energy density of the battery device 100.

[0109] Please see Figure 10 In some embodiments, the height direction of the chassis frame 400 is defined as the third direction Z, and the number of battery cells 10 is multiple. The multiple battery cells 10 are distributed in one or two layers along the third direction Z. When the battery cells 10 are distributed in one layer, the battery cells 10 are located on one side of the chassis frame 400 along the third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0110] When the battery cells 10 are stacked in two layers, one layer of battery cells 10 is embedded in the chassis frame 400, that is, one layer of battery cells 10 is arranged between the two longitudinal beams 420 of the chassis frame 400, and the other layer of battery cells 10 is located on one side of the chassis frame 400 along the third direction Z.

[0111] Thus, when the battery cells 10 are distributed in one layer, it is convenient to manage the battery cells 10; when the battery cells 10 are stacked in two layers, the battery device 100 can have a larger capacity. In addition, one layer of battery cells 10 is embedded in the chassis frame 400, which can improve the compactness of the matching between the chassis frame 400 and the battery device 100.

[0112] Please refer to it again. Figures 2-4 In some embodiments, the height direction of the chassis frame 400 is defined as the third direction Z. The battery device 100 also includes an electrical compartment 60, which is distributed along the third direction Z with the battery cells 10. The battery cells 10 are located on one side of the chassis frame 400 along the third direction Z, and the electrical compartment 60 is embedded in the chassis frame 400.

[0113] Specifically, a cover is provided on the side of the top plate 24 facing the chassis frame 400, and an electrical compartment 60 is formed inside the cover. There can be one or more covers, which can be arranged at intervals along the second direction Y, with each cover forming an electrical compartment 60. The electrical compartment 60 can accommodate components such as the battery management unit and high-voltage box of the battery device 100. The electrical compartment 60 can communicate with the second accommodating space 214, facilitating the connection between the components inside the electrical compartment 60 and the components inside the second accommodating space 214.

[0114] In the above embodiment, the electrical compartment 60 is embedded in the chassis frame 400, which can make full use of the space of the chassis frame 400 and improve the space utilization rate of the bottom of the chassis frame 400.

[0115] Please refer to it again. Figure 2 and Figure 3 In some embodiments, the vehicle 1000 includes a chassis frame 400 and a battery device 100 as described in any of the above embodiments, with the battery device 100 mounted on the chassis frame 400 via a bracket 30. Thus, the housing 20 protrudes from the chassis frame 400 along its width, eliminating the need for additional large parts such as a pallet. Furthermore, the width of the chassis frame 400 does not need to match the maximum size of the housing 20 of the battery device 100. This not only reduces the number of parts in the vehicle 1000 but also lowers the assembly difficulty and cost of the electric vehicle 1000.

[0116] Please refer to it again. Figure 2 and Figure 3In some embodiments, the chassis frame 400 includes two opposing longitudinal beams 420, with the bracket 30 mounted on the two longitudinal beams 420. Specifically, the longitudinal beams 420 are the main load-bearing components of the chassis frame 400, and their length extends along the length direction of the vehicle 1000. The chassis frame 400 may also include multiple connecting beams 430, which connect the two longitudinal beams 420. The multiple connecting beams 430 are arranged at intervals along a second direction Y, and the battery device 100 may be located between two of the connecting beams 430. The multiple connecting beams 430 make the structure of the chassis frame 400 more stable, which is beneficial to improving the performance of the vehicle 1000.

[0117] Therefore, the longitudinal beam 420 has greater strength and sufficient installation space to install the battery device 100, making it easier to mount the battery device 100 onto the chassis frame 400.

[0118] In some embodiments, the longitudinal beam 420 is a single-piece structure. For example, the longitudinal beam 420 can be made of a single-piece molded steel profile. This simplifies the structure of the longitudinal beam 420 and helps reduce the manufacturing cost of the chassis frame 400.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, The battery device includes: Battery cell; The housing includes a frame and a mounting beam. The frame has a first receiving space for accommodating the individual battery cells. The mounting beam is disposed in the first receiving space and fixedly connected to the frame. A bracket, connected to the mounting beam, configured to be mounted on the chassis frame of the vehicle, wherein the width direction of the chassis frame is defined as a first direction, and the housing protrudes from the chassis frame along the first direction.

2. The battery device according to claim 1, characterized in that, The length direction of the mounting beam is the same as the first direction.

3. The battery device according to claim 2, characterized in that, The number of the mounting beams is multiple, and the multiple mounting beams are arranged at intervals along the second direction. At least two of the mounting beams are provided with the brackets, and the second direction is perpendicular to the first direction.

4. The battery device according to claim 3, characterized in that, The brackets on at least two of the mounting beams are configured to be mounted on the outer side of the chassis frame along its width.

5. The battery device according to claim 4, characterized in that, The number of brackets on the mounting beam is multiple, and the multiple brackets are arranged at intervals along the length direction of the mounting beam. The multiple brackets are respectively mounted on two opposite outer sides of the chassis frame.

6. The battery device according to claim 5, characterized in that, All of the mounting beams are equipped with the brackets, and each mounting beam has two brackets, which are symmetrically arranged.

7. The battery device according to any one of claims 3-6, characterized in that, The number of battery cells is multiple, and at least some of the battery cells are arranged along the second direction. Each battery cell includes a first outer surface, which is the surface with the largest area among the outer surfaces of the battery cell. The first outer surface faces the mounting beam and abuts against the mounting beam.

8. The battery device according to any one of claims 3-6, characterized in that, The frame includes two first side beams and two second side beams. The two first side beams are spaced apart along the second direction. Each second side beam is connected to the two first side beams. Each mounting beam is connected to the two second side beams. The characteristic feature is that a second accommodating space is formed between one of the mounting beams and one of the first side beams.

9. The battery device according to any one of claims 3-6, characterized in that, The battery device includes a connecting strip that connects to a plurality of the mounting beams.

10. The battery device according to claim 1, characterized in that, The enclosure includes a base plate connected to the frame, the mounting beam includes a top surface facing away from the base plate, and the bracket is mounted on the top surface.

11. The battery device according to claim 10, characterized in that, The battery device includes a fastening assembly that connects the mounting beam and the bracket to secure the bracket to the mounting beam.

12. The battery device according to claim 11, characterized in that, The fastening assembly includes a bolt and a nut. The bolt passes through the mounting beam and the bracket, and the nut is screwed onto the bolt. The head of the bolt abuts against the bracket, and the nut abuts against the base plate.

13. The battery device according to any one of claims 10-12, characterized in that, The enclosure also includes a top plate opposite the bottom plate, the top plate covering the top surface, and the bracket located on the side of the top plate away from the top surface.

14. The battery device according to claim 1, characterized in that, The bracket includes a mounting portion and a mounting portion bent relative to the mounting portion, the mounting portion being connected to the mounting beam, and the mounting portion being configured to be mounted on the chassis frame.

15. The battery device according to claim 1, characterized in that, The thickness of the frame is less than or equal to the thickness of the mounting beam.

16. The battery device according to claim 15, characterized in that, The thickness of the mounting beam is H1, where 30mm ≤ H1 ≤ 45mm.

17. The battery device according to claim 15, characterized in that, The thickness of the frame is H2, where 20mm ≤ H2 ≤ 30mm.

18. The battery device according to claim 1, characterized in that, The height direction of the chassis frame is defined as the third direction. The number of battery cells is multiple. The multiple battery cells are distributed in one or two layers along the third direction. When the battery cells are distributed in one layer, the battery cells are located on one side of the chassis frame along the third direction. In the case where the battery cells are stacked in two layers, one layer of the battery cells is embedded in the chassis frame, and the other layer of the battery cells is located on one side of the chassis frame along the third direction.

19. The battery device according to claim 1, characterized in that, The height direction of the chassis frame is defined as the third direction. The battery device also includes an electrical compartment. The electrical compartment and the battery cells are distributed along the third direction. The battery cells are located on one side of the chassis frame along the third direction. The electrical compartment is embedded in the chassis frame.

20. A vehicle, characterized in that, The vehicles include: Chassis frame; and The battery device according to any one of claims 1-19, wherein the battery device is mounted on the chassis frame via the bracket.

21. The vehicle according to claim 20, characterized in that, The chassis frame includes two longitudinal beams, which are arranged opposite to each other along the first direction, and the bracket is mounted on the longitudinal beams.

22. The vehicle according to claim 21, characterized in that, The longitudinal beams are a single, integral structure.

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