Battery device and vehicle

Abstract

The embodiment of the invention provides a battery device and a vehicle. Relates to the technical field of batteries. The battery device comprises a box body and battery cells, the box body is provided with at least two boss structures, each boss structure forms a first containing cavity, and the multiple battery cells are located in the first containing cavities; wherein an avoiding part is formed between every two adjacent boss structures, and the avoiding parts are used for avoiding a vehicle beam of the vehicle. Wherein an avoiding part is formed between every two adjacent boss structures, and the avoiding parts are used for avoiding a vehicle beam of the vehicle. Through the design of the boss structure and the avoiding part, the battery device can adapt to the complex shape of the vehicle chassis, so that the overall space utilization rate is improved, the battery device can accommodate more battery cells or battery cells with larger capacity, and the volume energy density of the battery device is improved; and the battery cell is arranged in each boss structure, so that the volume energy density of the battery device is improved, and the cruising ability of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and a vehicle. Background Art

[0002] In related art, a vehicle's battery assembly is mounted beneath the vehicle's chassis. The assembly is connected to the vehicle's beams, leveraging the beam's structural strength to protect the battery pack. The assembly includes a housing that forms a compartment for housing the batteries.

[0003] However, existing battery devices have the problem of low volumetric energy density. Summary of the Invention

[0004] The embodiments of the present application provide a battery device and a vehicle beam, which improve the volume energy density of the battery device and enhance the endurance of the vehicle.

[0005] In a first aspect, an embodiment of the present application provides a battery device, comprising:

[0006] The box body has at least two boss structures, each boss structure forms a first accommodating cavity;

[0007] A plurality of battery cells are located in the first accommodating cavity;

[0008] Wherein, an avoidance portion is formed between adjacent boss structures, and the avoidance portion is used to avoid the vehicle beam.

[0009] In some embodiments of the present application, the box body includes a tray and a cover body that are connected to each other, and the cover body has a boss structure.

[0010] In some embodiments of the present application, the raised end of the boss structure is located on the side of the cover body facing away from the tray.

[0011] The first accommodating cavity is formed on a side of the boss structure facing the tray.

[0012] In some embodiments of the present application, there are multiple boss structures, and the multiple boss structures are arranged at intervals along the first direction.

[0013] A plurality of battery cells form a first battery cell module, and the number of the first battery cell modules is multiple.

[0014] The first accommodating cavity accommodates at least one first battery cell module.

[0015] In some embodiments of the present application, the battery device further includes an electrical connector that connects the first battery cell modules of two adjacent first accommodating cavities.

[0016] In some embodiments of the present application, the electrical connector has an electrical connection bending portion.

[0017] Along the first direction, the middle portion of the electrical connector is bent relative to the two ends of the electrical connector in a direction away from the cover body to form an electrical connection bent portion.

[0018] The electrical connection bending portion and the avoiding portion are arranged correspondingly and have matching shapes.

[0019] In some embodiments of the present application, the electrical connector includes at least two conductive base parts, one end of the at least two conductive base parts is connected to the electrical connection bending part, and the other end of the conductive base parts is respectively connected to adjacent first battery core modules.

[0020] In some embodiments of the present application, the conductive base portion includes a conductive plate, the conductive plate is provided with a recessed portion, and the pole of the end cell of the first cell module located at the end is welded to the recessed portion.

[0021] In some embodiments of the present application, the electrical connection bend portion includes a first section, a second section, and a third section that are connected in sequence.

[0022] The first section and the third section both extend along the first direction, and the second section extends along the second direction; the first section and the third section are connected to the first battery cell module.

[0023] The first direction and the second direction intersect.

[0024] In some embodiments of the present application, the outer periphery of the electrical connection bend portion is wrapped with an insulating layer.

[0025] In some embodiments of the present application, the electrical connector is a stamped part or a welded part.

[0026] In some embodiments of the present application, the battery device further includes an insulating member, which is disposed between the electrical connector and the first battery cell module, and the electrical connector is detachably connected to the insulating member.

[0027] In some embodiments of the present application, a second accommodating cavity is formed on the tray, and the cavity opening of the second accommodating cavity faces the cover body.

[0028] The first accommodating cavity of each boss structure is communicated with the second accommodating cavity.

[0029] In some embodiments of the present application, the battery device further includes a second battery cell module, and the second battery cell module is located in the second accommodating cavity.

[0030] In some embodiments of the present application, the pallet includes a mounting member, which is used to connect the box body and the vehicle beam.

[0031] In some embodiments of the present application, the mounting member includes a first flange, and the first flange is provided on at least one side of the tray along the second direction.

[0032] In some embodiments of the present application, the tray is provided with a mounting groove, the first flange is provided with a first mounting hole, the notch of the mounting groove faces away from the cover body, the first mounting hole is connected to the mounting groove, and the first mounting hole is used for passing the first fastener.

[0033] In some embodiments of the present application, there are multiple first flanges, and the multiple first flanges are arranged at intervals along the circumference of the box.

[0034] In some embodiments of the present application, the cover body is provided with an avoidance gap, and the first flange is passed through the avoidance gap to connect with the vehicle beam.

[0035] In some embodiments of the present application, the mounting member further includes a second flange, which is arranged on at least one side of the tray along the first direction, and the second flange is provided with a second mounting hole for passing the second fastener.

[0036] In some embodiments of the present application, the avoidance portion is an avoidance groove; the notch of the avoidance groove is used to face the beam of the vehicle.

[0037] In some embodiments of the present application, the tray and the cover are arranged along a third direction, and along the second direction, the avoidance groove passes through the cover, and the second direction and the third direction intersect.

[0038] In some embodiments of the present application, the groove wall of the avoidance groove has a slope.

[0039] In some embodiments of the present application, the width of the avoidance groove gradually increases from the bottom of the avoidance groove to the groove opening of the avoidance groove.

[0040] In some embodiments of the present application, the groove width of the groove bottom portion close to the avoidance groove is the minimum groove width of the avoidance groove, and the minimum groove width is greater than the width of the longitudinal beam of the vehicle.

[0041] In some embodiments of the present application, along the second direction, two surfaces at opposite ends of the cover body have an inclination.

[0042] In some embodiments of the present application, along the third direction, the width of the cover body along the second direction gradually decreases, and the second direction and the third direction intersect.

[0043] In some embodiments of the present application, the cover is an injection-molded part.

[0044] In some embodiments of the present application, the cover body is formed with a box protrusion, and a third accommodating cavity is formed on the side of the box protrusion close to the tray, and the third accommodating cavity is connected to the first accommodating cavity; the third accommodating cavity is used to accommodate the power distribution module.

[0045] In a second aspect, an embodiment of the present application provides a vehicle, comprising:

[0046] Car beam;

[0047] The battery device is connected to the vehicle beam; the avoidance portion of the battery device is used to avoid the vehicle beam.

[0048] In some embodiments of the present application, the vehicle beam includes a cross beam extending along the width direction of the vehicle.

[0049] The crossbeam includes a first crossbeam and a second crossbeam, which are arranged opposite to each other along the length direction of the vehicle; the tray includes at least two first flanges which are arranged opposite to each other, and the at least two first flanges are respectively connected to the first crossbeam and the second crossbeam.

[0050] In some embodiments of the present application, the vehicle further includes a first fastener, a portion of the first fastener abuts against a side of the first flange facing away from the crossbeam, and a portion of the first fastener passes through the first flange and the crossbeam.

[0051] In some embodiments of the present application, the vehicle beam includes a longitudinal beam extending along the length direction of the vehicle; at least a portion of the longitudinal beam is located in the avoidance groove of the avoidance portion of the battery device.

[0052] In some embodiments of the present application, the vehicle beam also includes at least two mounting beams, which are respectively located on both sides of the first cross beam and the second cross beam along the width direction of the vehicle and are respectively connected to the first cross beam and the second cross beam, and the tray of the battery device includes at least two second flanges arranged opposite to each other, and the at least two second flanges are respectively connected to the at least two mounting beams.

[0053] In some embodiments of the present application, the vehicle further includes a second fastener, a portion of the second fastener abuts against a side of the mounting beam facing away from the second flange, and a portion of the second fastener passes through the second flange and the mounting beam.

[0054] In some embodiments of the present application, there are multiple battery devices, and the multiple battery devices are arranged in sequence along the length direction of the vehicle.

[0055] The embodiments of the present application provide a battery device and a vehicle. The battery device includes a housing and battery cells. The housing has at least two boss structures, each boss structure forms a first accommodating cavity, and a plurality of battery cells are located in the first accommodating cavity; wherein, an avoidance portion is formed between adjacent boss structures, and the avoidance portion is used to avoid the vehicle beam. wherein, an avoidance portion is formed between adjacent boss structures, and the avoidance portion is used to avoid the vehicle beam. through the design of the boss structure and the avoidance portion, the battery device can adapt to the complex shape of the vehicle chassis, thereby improving the overall space utilization, the battery device can accommodate more battery cells or battery cells with a larger capacity, and improve the volume energy density of the battery device; by arranging battery cells in each boss structure, it is beneficial to improve the volume energy density of the battery device and improve the endurance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0057] Figure 1 A schematic diagram of the structure of the battery device and the vehicle beam provided in an embodiment of the present application;

[0058] Figure 2 Schematic diagram of the structure of the battery device provided in the embodiment of the present application Figure 1 ;

[0059] Figure 3 for Figure 2 Enlarged view of area A in the middle;

[0060] Figure 4 for Figure 2 Enlarged view of area B in the middle;

[0061] Figure 5 Schematic diagram of the structure of the battery device provided in the embodiment of the present application Figure 2 ;

[0062] Figure 6 for Figure 5 Enlarged view of area C in the middle;

[0063] Figure 7 Schematic diagram of the structure of the battery device provided in the embodiment of the present application Figure 3 ;

[0064] Figure 8 Schematic diagram of the structure of the connection between the crossbeam of the battery device provided in the embodiment of the present application and the tray Figure 1 ;

[0065] Figure 9 Schematic diagram of the structure of the connection between the crossbeam of the battery device provided in the embodiment of the present application and the tray Figure 2 ;

[0066] Figure 10 A schematic structural diagram of adjacent first cell modules of a battery device provided by an embodiment of the present application being connected via an electrical connector;

[0067] Figure 11 A schematic diagram of the structure of the electrical connector of the battery device provided in an embodiment of the present application.

[0068] Description of reference numerals:

[0069] 10: Battery device;

[0070] 100: box body; 100a: boss structure; 101: tray; 102: cover; 102a: avoidance portion; 104: avoidance gap;

[0071] 200: battery cell; 210: first battery cell module; 220: second battery cell module; 230: connector; 240: end battery cell;

[0072] 300: electrical connector; 310: conductive base; 311: conductive plate; 312: recessed portion; 320: electrical connection bend; 321: first section; 322: second section; 323: third section; 330: insulating member;

[0073] 410: mounting slot; 420: first mounting hole; 430: first fastener; 440: first flange; 450: second flange; 460: second fastener; 470: second mounting hole;

[0074] 500: vehicle beam; 510: longitudinal beam; 530: mounting beam; 540: cross beam; 550: first cross beam; 560: second cross beam.

[0075] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0076] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0077] In modern electric vehicle technology, energy replenishment methods include fast charging and battery swapping. Fast charging refers to the method of charging electric vehicle batteries in a relatively short time using high-power charging stations. Battery swapping replenishes energy by replacing the vehicle battery, rather than charging the battery.

[0078] In related technologies, fast-charging vehicles use rectangular battery packs within a battery compartment designed into the vehicle chassis or body structure. Brackets and fixtures are used to secure the battery pack within the compartment, ensuring it does not move while the vehicle is in motion.

[0079] However, the rectangular shape of the battery device may not be able to fully fit into irregular spaces in the vehicle chassis or body structure, resulting in inefficient space utilization. This irregular space utilization may limit the total capacity of the battery, thereby affecting the volume energy density.

[0080] In summary, existing battery devices have the problem of low volume energy density.

[0081] In view of this, an embodiment of the present application provides a battery device and a vehicle. The battery device includes a case and a battery cell. The case has at least two boss structures, each boss structure forms a first accommodating cavity, and a plurality of battery cells are located in the first accommodating cavity; wherein, an avoidance portion is formed between adjacent boss structures, and the avoidance portion is used to avoid the vehicle beam. wherein, an avoidance portion is formed between adjacent boss structures, and the avoidance portion is used to avoid the vehicle beam. through the design of the boss structure and the avoidance portion, the battery device can adapt to the complex shape of the vehicle chassis, thereby improving the overall space utilization, the battery device can accommodate more battery cells or battery cells with larger capacity, and improve the volume energy density of the battery device; by arranging battery cells in each boss structure, it is beneficial to improve the volume energy density of the battery device and improve the endurance of the vehicle.

[0082] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0083] First, refer to Figure 1 As shown, an embodiment of the present application provides a vehicle, comprising:

[0084] Car beam 500;

[0085] The battery device 10 is connected to the vehicle beam 500 ; the avoidance portion 102 a of the battery device 10 is used to avoid the vehicle beam 500 .

[0086] Illustratively, the beam 500 is the primary load-bearing structure of the vehicle, responsible for supporting the weight of the vehicle, including the vehicle body, passengers, and cargo. The beam 500 provides the necessary rigidity and strength to ensure that the vehicle maintains structural integrity under various driving conditions.

[0087] The function of the battery device 10 is to store electrical energy for use by the vehicle's electric motor and other electrical systems to enable the vehicle to accelerate, decelerate, and maintain speed.

[0088] By connecting the battery device 10 to the vehicle beam 500, the available space under the vehicle chassis can be maximized. This design avoids space waste and enables the vehicle to accommodate more battery capacity within a limited space.

[0089] The avoidance portion 102a is used to avoid the vehicle's beam. The battery device 10 can adapt to the complex shape of the vehicle chassis, thereby improving the overall space utilization.

[0090] As a feasible implementation, the vehicle beam 500 includes a cross beam 540 extending in the vehicle width direction.

[0091] The crossbeam 540 includes a first crossbeam 550 and a second crossbeam 560. The first crossbeam 550 and the second crossbeam 560 are arranged opposite to each other along the length direction of the vehicle. The tray 101 includes at least two first flanges 440 arranged opposite to each other. The at least two first flanges 440 are connected to the first crossbeam 550 and the second crossbeam 560 respectively. Figure 1 The direction indicated by X. The width direction of the vehicle refers to Figure 1 The direction shown in Y.

[0092] For example, the battery assembly 10 is designed to be located between the first cross member 550 and the second cross member 560. This layout utilizes the space between the cross members 540, enabling the battery assembly 10 to be compactly integrated into the vehicle chassis. By placing the battery assembly 10 between the cross members 540, designers can maximize the available space under the chassis, improving the battery's energy density and the vehicle's range.

[0093] Each first flange 440 is respectively connected to the first cross beam 550 and the second cross beam 560. This connection method ensures that the pallet 101 can be firmly mounted on the vehicle beam 500, providing the necessary support and stability.

[0094] As a feasible embodiment, the vehicle further includes a first fastener 430 , a portion of which abuts against a side of the first flange 440 facing away from the crossbeam 540 , and a portion of the first fastener 430 passes through the first flange 440 and the crossbeam 540 .

[0095] Illustratively, the first fastener 430 is used to secure the first flange 440 of the pallet 101 to the crossbar 540. The first fastener 430 includes a bolt, a screw, or other types of mechanical fasteners.

[0096] A portion of the first fastener 430 abuts against the side of the first flange 440 facing away from the crossbeam 540, ensuring that the fastener can effectively secure the flange to the crossbeam 540 and prevent loosening. A portion of the first fastener 430 passes through the first flange 440 and the crossbeam 540. This penetrating structure provides a secure mechanical connection, ensuring that the tray 101 remains stable during vehicle operation.

[0097] As a feasible implementation, the vehicle beam 500 includes a longitudinal beam 510 extending along the length direction of the vehicle; at least a portion of the longitudinal beam 510 is located in the avoidance groove of the avoidance portion 102 a of the battery device 10 .

[0098] The length direction of the vehicle refers to Figure 1The direction indicated by X in the figure. The width direction of the vehicle refers to Figure 1 The direction shown in Y.

[0099] Illustratively, the longitudinal beam 510 is located in the escape groove of the escape portion 102a of the battery device 10. The escape groove is used to accommodate the longitudinal beam 510, allowing the battery device 10 to be seamlessly integrated with the vehicle chassis. This ensures that the battery device 10 is tightly integrated with the vehicle chassis without affecting the structural function of the longitudinal beam 510.

[0100] As a feasible embodiment, the vehicle beam 500 also includes at least two mounting beams 530, which are respectively located on both sides of the first cross beam 550 and the second cross beam 560 along the vehicle width direction and are respectively connected to the first cross beam 550 and the second cross beam 560, and the tray 101 includes at least two second flanges 450 arranged opposite to each other, and the at least two second flanges 450 are respectively connected to the at least two mounting beams 530.

[0101] For example, mounting beams 530 provide additional structural support and stability, ensuring the vehicle maintains good rigidity and strength during driving. By positioning mounting beams 530 on either side of the first crossbeam 550 and the second crossbeam 560 along the vehicle width and connecting them to the two crossbeams, the overall rigidity and load capacity of the vehicle beams are enhanced.

[0102] Each second flange 450 is respectively connected to at least two mounting beams 530. This connection method ensures that the pallet 101 can be firmly mounted on the vehicle beam 500, providing the necessary support and stability.

[0103] As a feasible embodiment, the vehicle further includes a second fastener 460 , a portion of which abuts against a side of the mounting beam 530 away from the second flange 450 , and a portion of the second fastener 460 passes through the second flange 450 and the mounting beam 530 .

[0104] Illustratively, the second fastener 460 is used to secure the second flange 450 of the tray 101 to the mounting beam 530. The second fastener 460 may be designed to include bolts, screws, or other types of mechanical fasteners.

[0105] A portion of the second fastener 460 abuts against a side of the mounting beam 530 facing away from the second flange 450 to ensure that the fastener can effectively fix the flange on the mounting beam to prevent loosening.

[0106] As a feasible implementation, there are multiple battery devices 10 , and the multiple battery devices 10 are arranged in sequence along the length direction of the vehicle.

[0107] For example, by arranging multiple battery assemblies 10 in sequence along the length of the vehicle, the available space under the chassis can be maximized. This layout allows for a more compact battery system, improving the vehicle's energy density. Arranging multiple battery assemblies 10 in sequence can significantly increase their total capacity, thereby extending the vehicle's range.

[0108] Since the function of the battery device 10 is to store electrical energy for use by the motor and other electrical systems of the vehicle, the battery device 10 will be described in detail below.

[0109] First, refer to Figures 2 to 7 As shown, an embodiment of the present application provides a battery device 10, which includes:

[0110] The box body 100 has at least two boss structures 100a, and each boss structure 100a is formed with a first accommodating cavity;

[0111] A plurality of battery cells 200, wherein the plurality of battery cells 200 are located in the first accommodation cavity;

[0112] Wherein, an avoidance portion 102a is formed between adjacent boss structures 100a, and the avoidance portion 102a is used to avoid the vehicle beam 500 of the vehicle.

[0113] For example, the housing 100 of the battery device 10 is designed with at least two boss structures 100a. The boss structures 100a are portions that protrude outward from the substantially flat surface of the housing 100. These boss structures 100a are used to accommodate the battery cells 200. Each boss structure 100a has a first accommodating cavity formed therein. The first accommodating cavity is used to install and secure the battery cells 200. This design ensures the stability and safety of the battery cells 200 within the housing 100.

[0114] The battery cell 200 is the core component of the battery device 10 and is responsible for storing and providing electrical energy.

[0115] Adjacent boss structures 100a form clearances 102a. These clearances 102a are designed to avoid contact with structures such as the vehicle chassis beam 500. The beam 500 is a critical load-bearing and structural component of the vehicle chassis, and the battery device 10 must be installed without affecting the function of the beam 500.

[0116] By arranging the battery cells 200 in each boss structure 100a, the battery device 10 is able to utilize the available space under the vehicle chassis. This design allows the battery cells 200 to be flexibly arranged in an irregular chassis structure, thereby maximizing the use of space and improving the overall volume energy density. At the same time, the battery cells 200 in each boss structure 100a can be regarded as an independent module. This modular design makes the production, maintenance and replacement of the battery device 10 more convenient. The modular design can also simplify the manufacturing process and improve production efficiency. In addition, the dispersed layout of the battery cells 200 helps to improve thermal management. The battery cells 200 in each boss structure 100a can be independently designed for heat dissipation, reducing the accumulation of heat inside the battery pack, thereby improving the safety and life of the battery.

[0117] The battery device 10 provided in the embodiment of the present application, through the design of the boss structure 100a and the avoidance portion 102a, can better adapt to the complex shape of the vehicle chassis. This flexible design allows the battery device 10 to be more efficiently filled in irregular spaces, thereby improving overall space utilization. Through more efficient space utilization, the battery device 10 can accommodate more battery cells 200 or battery cells 200 of larger capacity, thereby directly increasing the volumetric energy density of the battery device 10.

[0118] At the same time, the design of the avoidance portion 102a enables the battery device 10 to avoid chassis structures such as the vehicle beam 500, which means that the battery device 10 can fit more closely to other parts of the chassis, reducing space waste caused by the chassis structure.

[0119] In addition, this design not only improves the energy density of the battery device 10, but also enhances the integration of the battery device 10 with the vehicle structure, reducing the impact on the overall design of the vehicle.

[0120] As a feasible implementation, the box body 100 includes a tray 101 and a cover body 102 connected to each other, and the cover body 102 has a boss structure 100a.

[0121] Illustratively, the tray 101 is the bottom structure of the battery device 10, used to support and fix the battery cells 200. The tray 101 needs to have strength and rigidity to withstand the weight of the battery cells 200 and the vibration and impact generated during the vehicle's driving. The cover 102 is the top structure of the battery device 10, used to cover and protect the battery cells 200. The cover 102 has a sealing property to prevent water, dust and other external contaminants from entering the interior of the battery device 10. The tray 101 and the cover 102 are connected to each other to form a complete box 100 structure. The tray 101 and the cover 102 can be connected by bolts, snaps or welding.

[0122] The combination of the tray 101 and the cover 102 provides a closed structure, which enhances the overall strength and rigidity of the battery device 10. This design can effectively resist external shocks and vibrations and protect the internal battery cells 200.

[0123] As a feasible implementation, the raised end of the boss structure 100 a is located on the side of the cover 102 facing away from the tray 101 .

[0124] The first receiving cavity is formed on a side of the boss structure 100 a facing the tray 101 .

[0125] For example, the cover 102 is designed with a boss structure 100a, with the raised end of the boss structure 100a located above the cover 102, that is, on the side facing away from the tray 101. This design makes the cover 102 not just a flat surface, but rather a three-dimensional structure. The first receiving cavity is used to install and secure the battery cells 200, ensuring their stability during vehicle operation.

[0126] The design of the boss structure 100 a allows an additional space, a first accommodating cavity, to be formed in the cover 102 for accommodating the battery cell 200 , thereby effectively utilizing the space under the vehicle chassis and improving the volume energy density of the battery device 10 .

[0127] As a feasible implementation manner, there are multiple boss structures 100 a , and the multiple boss structures 100 a are arranged at intervals along the first direction.

[0128] The plurality of battery cells 200 form a first battery cell module 210 . There are a plurality of first battery cell modules 210 , each of which includes a plurality of battery cells.

[0129] The first accommodation cavity accommodates at least one first battery cell module 210 .

[0130] For example, each boss structure 100a is provided with a first receiving cavity for mounting the first battery cell module 210. The design of the multiple boss structures 100a allows the battery device 10 to flexibly adapt to the shape of the vehicle chassis.

[0131] The first accommodating cavities of the multiple boss structures 100a are used to accommodate the first battery cell modules 210. Each first accommodating cavity is designed to ensure the stability and safety of the first battery cell modules 210, preventing movement or damage during use. Each first battery cell module 210 corresponds to a first accommodating cavity, ensuring that each first battery cell module 210 has a dedicated space for securement and protection.

[0132] For example, the design of the first accommodating cavity accommodating at least one first battery cell module 210 can increase the battery capacity of the battery device 10 and improve the reliability and performance of the battery device 10 .

[0133] For example, referring to Figure 1 The spacing of the boss structures 100a allows for the formation of multiple independent first accommodating cavities on the cover 102 for accommodating the first battery cell modules 210. This design maximizes the use of the space between the cover 102 and the tray 101, thereby increasing the volumetric energy density of the battery device 10.

[0134] The spaced-apart boss structures 100a support a modular layout of the first battery cell module 210. Each boss structure 100a can accommodate an independent first battery cell module 210. This modular design facilitates the production, maintenance, and replacement of the battery device 10. The spaced-apart relief portions 102a between the boss structures 100a can be used for ventilation and heat dissipation.

[0135] By providing multiple boss structures 100a at intervals within the battery device 10, the first cell modules 210 can be evenly distributed throughout the battery device 10. This even distribution helps balance the weight of the battery device 10, preventing weight from being concentrated on one side or in a particular area. Even weight distribution helps lower the vehicle's overall center of gravity. A lower center of gravity improves vehicle stability, particularly during cornering, acceleration, and braking, reducing the risk of rollover and overturning.

[0136] As a feasible implementation, the tray 101 is formed with a second accommodating cavity, and the cavity opening of the second accommodating cavity faces the cover body 102 .

[0137] The first accommodation cavity and the second accommodation cavity of each boss structure 100 a are communicated with each other.

[0138] As a feasible implementation, the battery device 10 further includes a second battery cell module 220 , and the second battery cell module 220 is located in the second accommodation cavity.

[0139] Illustratively, the design of the second accommodating cavity enables the tray 101 to accommodate more second battery cell modules 220 , thereby improving the volume energy density of the battery device 10 and fully utilizing the space between the tray 101 and the cover 102 .

[0140] For example, by interconnecting the first accommodating cavities through the second accommodating cavity, electrical connections can be established between the first cell module 210 and the second cell module 220. This integrated design simplifies the wiring and connection of the battery system, improving the overall efficiency and reliability of the battery device 10. The interconnected accommodating cavity design allows for efficient utilization of the space between the tray 101 and the cover 102, allowing for the accommodation of more first cell modules 210 and second cell modules 220 without increasing the overall volume of the battery device 10.

[0141] For example, referring to Figure 1In the direction indicated by Z, the stacked first and second cell modules 210, 220 are designed to fully utilize vertical space, allowing the battery device 10 to accommodate more first and second cell modules 210, 220 without increasing the horizontal footprint, thereby improving overall energy density. By distributing the first and second cell modules 210, 220 in different cavities, heat management can be more effectively achieved.

[0142] For example, a support plate is provided between the first cell module 210 and the second cell module 220. The support plate provides additional physical support between the first cell module 210 and the second cell module 220. This support helps maintain the stability of the battery cells and prevents displacement or damage under vibration or impact conditions. The support plate acts as a buffer layer, absorbing and dissipating vibration and impact caused by vehicle movement or external impact.

[0143] For example, the first battery cell module 210 includes a plurality of battery cells. Figure 1 The cells are arranged in sequence in the direction shown by Y, and adjacent cells are electrically connected via connecting sheets.

[0144] The second cell module 220 includes a plurality of cells. Figure 1 The cells are arranged in sequence in the direction shown by Y, and adjacent cells are electrically connected via connecting sheets.

[0145] As a feasible implementation manner, the avoidance portion 102a is a avoidance groove; the notch of the avoidance groove is used to face the vehicle beam 500 of the vehicle.

[0146] For example, the avoidance groove is a groove structure in the battery device 10, with its groove opening facing the vehicle beam 500, so that the battery device 10 can avoid the vehicle beam 500 and other chassis structures during installation. The design of the avoidance groove opening facing the vehicle beam 500 ensures that the battery device 10 can fit tightly against the vehicle chassis while avoiding physical interference with the vehicle beam 500.

[0147] By designing the avoidance groove, the battery device 10 can adapt to the complex shape of the vehicle chassis. At the same time, the avoidance groove not only avoids direct contact with the vehicle beam 500, but also protects the battery device 10 from vibration and impact from the vehicle beam 500 to a certain extent.

[0148] At the same time, the presence of the avoidance groove makes the installation process of the battery device 10 easier. The installer can more easily place the battery device 10 under the vehicle chassis without having to modify or make additional adjustments to the vehicle beam 500.

[0149] As a feasible implementation manner, the tray 101 and the cover 102 are arranged along the third direction, and the avoidance groove passes through the cover 102 along the second direction, and the second direction and the third direction intersect.

[0150] For example, the second direction refers to Figure 1 The direction indicated by X in the middle is the reference direction of the third direction Figure 1 By providing a clearance groove extending through the cover 102 along the length of the vehicle, the battery assembly 10 can better adapt to the vehicle chassis structure. This design ensures that the battery assembly 10 can be installed without interfering with the vehicle beam 500, thereby maintaining the overall structural strength and functionality of the vehicle.

[0151] As a feasible implementation method, the number of the avoidance portion 102a is multiple, along Figure 1 In the direction indicated by Y, a plurality of avoidance portions 102a are arranged at intervals, and the plurality of avoidance portions 102a are used to avoid a plurality of vehicle beams 500 of the vehicle in a one-to-one correspondence.

[0152] For example, by designing multiple relief portions 102a, the battery device 10 can better adapt to the complex structure of a vehicle chassis. This design allows the battery device 10 to be installed without interfering with fixed structures such as the vehicle beam 500. The presence of the relief portions 102a allows the battery device 10 to fit more closely to the vehicle chassis, maximizing the use of available space. This helps to increase the volumetric energy density of the battery device 10.

[0153] As a feasible implementation, the cover 102 is an injection molded part.

[0154] Exemplarily, the cover 102 is an injection molded part produced using an injection molding process. Injection molding can create complex three-dimensional shapes in a single manufacturing process. Thus, the cover 102 can form a plurality of boss structures 100a, with the first receiving cavity of the boss structures 100a being used to accommodate the first battery cell module 210.

[0155] The injection molding process allows the cover 102 and the boss structure 100a to be manufactured as a whole. This integrated design reduces the number of components, reduces assembly complexity, and improves the overall strength and rigidity of the structure.

[0156] As a feasible implementation manner, the groove wall of the avoidance groove has an inclination.

[0157] For example, when the cover 102 is manufactured by injection molding, the slope of the groove wall of the avoidance groove refers to the groove wall having a draft angle. The draft angle refers to a slight angle set perpendicular to the parting plane to facilitate mold release during the injection molding process. This ensures that the cover 102 and its boss structure 100a can be smoothly removed from the mold during the manufacturing process of the cover 102, reducing the risk of manufacturing defects and product damage.

[0158] As a feasible implementation manner, the width of the avoidance groove gradually increases along the direction from the groove bottom to the groove opening of the avoidance groove.

[0159] For example, the gradually increasing groove width helps reduce friction and resistance during demolding. As the groove width increases, the contact area between the mold and the cover 102 gradually decreases, making it easier to remove the cover 102 from the mold and reducing the required demolding force. Easier demolding means shorter production cycles, thereby improving production efficiency. This not only reduces manufacturing costs but also increases output.

[0160] At the same time, by optimizing the demoulding process, the surface quality and dimensional accuracy of the cover 102 are improved. Reduced stress and deformation risk means that the final product is more consistent with the design specifications and the scrap rate is reduced.

[0161] In addition, due to the lower friction during demoulding, the wear of the mold is also reduced. This extends the service life of the mold and reduces the cost of mold maintenance and replacement.

[0162] As a feasible implementation, the groove width of the groove bottom portion close to the avoidance groove is the minimum groove width of the avoidance groove, and the minimum groove width is greater than the width of the longitudinal beam 510 of the vehicle.

[0163] For example, in the design of the escape trough, the width of the portion near the bottom is set as the minimum width. This portion is the narrowest area of ​​the entire escape trough. The minimum width is designed to be greater than the width of the longitudinal beam 510. This design ensures that the longitudinal beam 510 can pass through the escape trough smoothly without being squeezed or restricted. This width setting provides sufficient clearance, allowing the longitudinal beam 510 to be freely positioned in the escape trough.

[0164] As a feasible implementation, along the second direction, two surfaces at opposite ends of the cover 102 have slopes.

[0165] For example, when the cover 102 is manufactured using an injection molding process, the sloped surfaces at opposite ends of the cover 102 refer to the provision of draft angles on the surfaces at opposite ends of the cover 102 to ensure that the cover 102 can be smoothly removed from the mold after injection molding. This design reduces friction and resistance during demolding, thereby reducing the risk of damage to the plastic part.

[0166] By setting the draft angles at both ends of the cover 102, the demoulding process becomes smoother and faster, which improves production efficiency, shortens production cycle, and reduces manufacturing costs.

[0167] The existence of the draft angle reduces the friction between the cover body 102 and the mold, reduces the wear rate of the mold, thereby extending the service life of the mold and reducing maintenance and replacement costs.

[0168] As a feasible implementation manner, along the third direction, the width of the cover body 102 along the second direction gradually decreases, and the second direction and the third direction intersect.

[0169] For example, the gradually decreasing width of the cover 102 facilitates smooth demolding of the cover 102 during the injection molding process. As the width decreases, the fit of the plastic part in the mold decreases, reducing friction and resistance during demolding, thereby reducing the risk of damage to the plastic part.

[0170] As a feasible implementation, along the direction Z in the figure, the width of the cover 102 close to the tray 101 is the maximum width of the cover 102 , and the maximum width is smaller than the distance between adjacent beams 540 .

[0171] For example, by designing the maximum width of the cover 102 to be smaller than the distance between adjacent beams 540, it is ensured that the cover 102 can be smoothly installed between the beams 540. This design avoids interference with the beams 540 and ensures smooth integration of the battery device 10.

[0172] The smaller maximum width design simplifies the installation process of the cover 102. Since the cover 102 can be easily placed between the crossbeams 540, the installation process becomes more direct and simple, reducing the need for modifications to the chassis structure.

[0173] As a feasible implementation method, along Figure 1 In the direction indicated by Y, the first end of the box body 100 is provided with a liquid cooling interface, and the second end of the box body 100 is provided with a connector 230, which is arranged on the side of the first battery cell module 210 close to the vehicle beam 500.

[0174] For example, disposing the liquid cooling interface at the first end of the housing 100 can effectively manage the heat of the battery device 10. The liquid cooling system helps maintain the optimal operating temperature of the battery device 10 by circulating the coolant, thereby improving the performance and life of the battery device 10.

[0175] Placing the connector 230 at the second end of the housing 100, near the first battery module 210 and the vehicle's beam 500, simplifies the electrical connection path, reduces resistance losses, and improves power transmission efficiency. This layout makes the electrical connection more compact, saves space, and reduces the amount of cabling, thereby reducing cost and weight.

[0176] Illustratively, the connector 230 includes a power connector. The power connector is used to transmit high voltage and high current, and is responsible for delivering the electrical energy stored in the battery device 10 to the vehicle's drive system, such as providing power to the electric motor.

[0177] The connector 230 also includes a low-voltage signal connector, which is used to transmit control signals and monitoring data. These signals may include monitoring data such as voltage, current, temperature, etc. required by the battery management system, as well as control commands.

[0178] Illustratively, the connector 230 includes a plug.

[0179] As a feasible implementation, the cover body 102 is formed with a box protrusion, and a third accommodating cavity is formed on the side of the box protrusion close to the tray 101, and the third accommodating cavity is connected to the first accommodating cavity; the third accommodating cavity is used to accommodate the power distribution module.

[0180] For example, a housing protrusion is formed at the second end of the housing 100, which can effectively utilize the space to accommodate additional components, such as the power distribution module. This design helps increase functional integration without increasing the overall volume. The third storage cavity is specifically used to accommodate the power distribution module, which makes the layout of the electrical system more centralized and orderly. The power distribution module plays a role in distributing electrical energy and managing current in the battery system, ensuring balanced operation of each battery cell.

[0181] For example, to avoid interference between the box body 100 and the vehicle beam 500 , the upper surface of the box body protrusion is higher than the upper surface of the connector 230 disposed next to it and lower than the upper surface of the longitudinal beam 510 .

[0182] As a feasible implementation method, refer to Figure 5 、 Figure 10 、 Figure 11 As shown, the battery device 10 further includes an electrical connector 300 , which connects the first battery cell modules 210 of two adjacent first accommodation cavities.

[0183] Illustratively, the electrical connector 300 is a component used to achieve electrical connection between the first battery modules 210. It can be a wire or busbar, ensuring efficient current transmission between the first battery modules 210. Each first accommodating cavity houses a first battery module 210, and the electrical connector 300 is used to connect the first battery modules 210 in adjacent first accommodating cavities to form a complete battery system.

[0184] The electrical connector 300 ensures efficient current transmission between the first battery modules 210, reduces resistance losses, and improves the overall efficiency of the battery device 10. By using the electrical connector 300, the battery device 10 can adopt a modular design. This design allows each first battery module 210 to be independently installed and replaced, simplifying production and maintenance.

[0185] In some embodiments, the electrical connector 300 is a high-voltage power busbar. The high-voltage power busbar is made of copper or aluminum and has good electrical conductivity and mechanical strength. It also has low electrical resistance and can efficiently transmit high currents.

[0186] As a feasible implementation, the electrical connector 300 has an electrical connection bending portion 320 .

[0187] Along the first direction, the middle portion of the electrical connector 300 is bent relative to the two ends of the electrical connector 300 in a direction away from the cover 102 to form an electrical connection bending portion 320;

[0188] The electrical connection bending portion 320 and the avoiding portion 102 a are arranged correspondingly and have matching shapes.

[0189] For example, the middle portion of the electrical connector 300 is bent to form an electrical connector bend 320. This structural design allows the electrical connector 300 to provide additional space or flexibility without increasing the overall height. The avoidance portion 102a is used to provide space for the electrical connector bend 320, allowing it to be arranged without interference.

[0190] As a feasible embodiment, the electrical connector 300 includes at least two conductive base parts 310, one end of at least two conductive base parts 310 is connected to the electrical connection bending part 320, and the other end of the conductive base part 310 is respectively connected to the adjacent first battery cell module 210.

[0191] For example, the conductive base portion 310 is responsible for transmitting current from the first battery cell module 210. The electrical connection bend portion 320 is responsible for connecting the conductive base portion 310 to an adjacent first battery cell module 210. The electrical connection bend portion 320 is used to connect the two conductive base portions 310 to achieve electrical connection between adjacent first battery cell modules 210.

[0192] By directly connecting adjacent first cell modules 210, this design enables efficient current transmission, reduces resistance losses, and improves overall system efficiency. This design supports a modular battery system layout, making the production, maintenance, and replacement of the battery device 10 more convenient. Each first cell module 210 can be installed and replaced independently, simplifying the maintenance process.

[0193] As a feasible implementation, the conductive base portion 310 includes a conductive plate 311 , the conductive plate 311 is provided with a recessed portion 312 , and the pole of the end cell 240 located at the end of the first cell module 210 is welded to the recessed portion 312 .

[0194] Illustratively, the conductive plate 311 is a component of the conductive base 310. The recess 312 is a specific area on the conductive plate 311 for accommodating the pole of the first battery cell module 210. The presence of the recess 312 ensures that the pole can be firmly embedded in the conductive plate 311, providing a stable electrical connection.

[0195] Since the pole needs to be welded to the conductive plate 311, the recess 312 is provided. This not only controls the material thickness in the weld area, avoiding excessively thick welds, but also helps reduce thermal damage and material deformation that may occur during welding. Furthermore, the recess 312 concentrates heat, raising the temperature in the weld area and improving weld fusion. This helps form a stronger weld joint, reduces welding defects, and provides a more stable connection between the pole and the conductive plate 311, reducing the risk of loosening due to vibration or impact.

[0196] As a feasible implementation, the electrical connection bending portion 320 includes a first section 321 , a second section 322 and a third section 323 that are connected in sequence.

[0197] The first section 321 and the third section 323 both extend along the first direction, and the second section 322 extends along the second direction. The first section 321 and the third section 323 are connected to the first battery cell module 210 .

[0198] The first direction and the second direction intersect.

[0199] Exemplarily, the first section 321 and the third section 323 extend from the tray 101 to the cover 102 ( Figure 1 The second section 322 is connected to the conductive base portion 310 to ensure the effective transmission of current between the first battery module 210. Figure 1 The Y direction provides flexibility in the vertical direction. The design of this section allows the conductive connection portion 320 to make electrical connections between different planes.

[0200] By designing the electrical connection bend portion 320 to extend in different directions, the electrical connection bend portion 320 adapts to the structure of the avoidance portion 102 a , reducing the risk of physical interference and ensuring the integrity and functionality of the battery device 10 .

[0201] In addition, by designing the electrical connection bend portion 320 into multiple sections, the mechanical stability is improved and the risk of connection loosening or breaking due to vibration or mechanical stress is reduced.

[0202] As a feasible implementation manner, the outer periphery of the electrical connection bend portion 320 is wrapped with an insulating layer.

[0203] For example, the insulating layer effectively prevents accidental contact between the electrical connection bend 320 and other metal parts or electrical components, reducing the risk of short circuits and electric shock. The insulating layer provides additional protection from environmental factors such as moisture, dust, and chemicals, thereby improving the long-term reliability of the electrical connector 300.

[0204] In some embodiments, the electrical connection bend portion 320 is immersed in liquid epoxy resin, and the epoxy resin forms an insulating layer after being cured.

[0205] In some other embodiments, the outer periphery of the electrical connection bending portion 320 is coated with mica and polyimide, which form an insulating layer.

[0206] As a feasible implementation, the electrical connector 300 is a stamped part or a welded part.

[0207] In some embodiments, the electrical connector 300 is a stamped part. Stamped parts are cut and formed from sheet metal using a stamping process. The stamping process is typically performed using a stamping machine and a die. The stamping process allows for rapid production of large quantities of the electrical connector 300, reducing unit production costs. Stamped parts produced using this process exhibit high consistency and dimensional accuracy.

[0208] In other embodiments, the electrical connector 300 is a welded component. A welded component is formed by welding multiple metal parts together. Common welding methods include laser welding, spot welding, and arc welding. Welded components produced using welding processes have high strength.

[0209] Illustratively, the electrical connector 300 may be a stamped aluminum part.

[0210] As a feasible embodiment, the battery device 10 further includes an insulating member 330 . The insulating member 330 is disposed between the electrical connector 300 and the first battery cell module 210 . The electrical connector 300 is detachably connected to the insulating member 330 .

[0211] Exemplarily, the primary function of the insulator 330 is to provide electrical isolation, preventing short circuits between the electrical connector 300 and the first cell module 210, and between the electrical connector 300 and the support plate. This helps prevent electrical faults in the battery device 10 and ensures safe operation. By isolating the electrical connector 300 from the cell, and from the support plate, the insulator 330 acts as a safety barrier, preventing accidental contact and the risk of electric shock.

[0212] For example, the electrical connector 300 can be fixed to the insulating member 330 by means of a snap connection or a screw connection. This design not only ensures a stable installation of the electrical connector 300, but also facilitates assembly and maintenance.

[0213] In some embodiments, the electrical connector 300 is restricted on the buckle of the insulating member 330 by a limiting groove structure, which assists in the welding positioning of the electrical connector.

[0214] Illustratively, the insulating member 330 includes a plastic plate.

[0215] As a feasible implementation method, refer to Figure 6 、 Figure 8 and Figure 9 As shown, the pallet 101 includes a mounting member, which is used to connect the box body 100 and the vehicle beam 500.

[0216] For example, the mounting members securely connect the tray 101 to the vehicle beam 500, improving the battery assembly 10's ability to withstand vibration and impact during vehicle operation. By providing a reliable mechanical connection, the mounting members reduce the risk of displacement of the battery assembly 10 during a collision or emergency, improving the overall safety of the vehicle.

[0217] As a feasible implementation method, refer to Figure 3 As shown, the mounting member includes a first flange 440 , and the first flange 440 is provided on at least one side of the tray 101 along the second direction.

[0218] Illustratively, the first flange 440 increases the contact area, distributing stress and loads, thereby strengthening the connection between the pallet 101 and the vehicle beam 500. This helps prevent stress concentration at the connection point, reducing material fatigue and potential structural damage. The design of the first flange 440 provides additional support and anchoring points, reducing relative movement between the pallet 101 and the vehicle beam 500.

[0219] As a feasible embodiment, the tray 101 is provided with a mounting groove 410, and the first flange 440 is provided with a first mounting hole 420. The slot of the mounting groove 410 faces away from the cover body 102, and the first mounting hole 420 is connected to the mounting groove 410. The first mounting hole 420 is used for the first fastener 430 to pass through.

[0220] Illustratively, mounting slot 410 is a recessed groove on the mounting member that accommodates the connection tray 101 and the first fastener. The design of mounting slot 410 allows the first fastener to be installed from the side, making insertion and securing the first fastener more convenient when space is limited. In other words, the design of mounting slot 410 allows workers more room to work during battery pack installation and maintenance. By providing better working space, workers can more easily perform installation and maintenance tasks, reducing difficulty and time.

[0221] In addition, since the installation and removal processes do not directly contact the first battery cell module 210 and the second battery cell module 220 , the risk of physical damage to the battery is reduced, and the safety of the battery device 10 is improved.

[0222] For example, by providing a first mounting hole 420 on the first flange 440, the first mounting hole 420 is connected to the mounting groove 410, and the first fastener can pass through the first mounting hole 420, thereby effectively fixing the tray 101 on the vehicle beam 500, thereby improving the ability of the battery device 10 to withstand vibration and impact during vehicle driving.

[0223] Illustratively, the first fastener 430 includes a bolt, which is connected to the vehicle beam 500 through the mounting hole 420. This connection method provides a reliable mechanical fixation, ensuring that the battery device 10 can be firmly held in place during vehicle driving.

[0224] A gasket is placed between the bolt and mounting hole 420. The gasket distributes the pressure exerted by the bolt, protecting the edges of the mounting hole 420 and preventing damage caused by overtightening. Furthermore, the gasket compensates for minor misalignments caused by manufacturing tolerances or thermal expansion, further improving the stability of the connection. The combination of the bolt and gasket effectively mitigates vibration and impact generated during vehicle operation. This design reduces stress concentration on the battery device 10 and extends its service life.

[0225] As a feasible implementation manner, there are multiple first flanges 440 , and the multiple first flanges 440 are arranged at intervals along the circumference of the box body 100 .

[0226] For example, the spaced first flanges 440 help evenly distribute the mechanical stress on the box 100, reduce local stress concentration, and improve the stability and durability of the overall structure. The uniform stress distribution can effectively reduce the deformation of the box 100 under external forces, maintaining its shape and function intact.

[0227] The spaced arrangement of the multiple first flanges 440 increases the number of connection points, thereby improving the firmness and reliability of the connection between the box body 100 and the vehicle beam 500. This arrangement helps prevent individual mounting parts from loosening due to vibration or impact, and enhances the stability of the connection between the battery device 10 and the vehicle beam 500.

[0228] Multiple first flanges 440 are provided, spaced apart along the circumference of the housing 100. This arrangement ensures the stability of the battery assembly 10 in various directions, providing uniform support and fixation. The battery assembly 10 can more evenly distribute vibration and impact generated during vehicle operation, ensuring stability during vehicle travel, acceleration, deceleration, and cornering. This enhanced stability helps extend the service life of the battery assembly 10.

[0229] As a feasible implementation method, refer to Figure 6 As shown, the cover 102 is provided with an avoidance notch 104 , and the first flange 440 is passed through the avoidance notch 104 to connect with the vehicle beam 500 .

[0230] Exemplarily, the avoidance notch 104 provides a space for the first flange 440 to pass through, so that the first flange 440 can pass through the cover 102 and dock with the beam 500. This design allows for a tight connection between components without requiring additional space or complicated installation steps.

[0231] By providing an avoidance notch on the cover 102, the first flange 440 can be accurately docked with the beam 500.

[0232] As a feasible implementation method, refer to Figure 4 As shown, the mounting member further includes a second flange 450 , which is disposed on at least one side of the tray 101 along the first direction. The second flange 450 is provided with a second mounting hole 470 for the second fastener 460 to pass through.

[0233] For example, the second flange 450 is connected to the beam 500 via a second fastener 460 to form an integral rigid structure, thereby improving the overall strength and rigidity of the box 100. This connection method helps to disperse the stress applied to the box 100, reduce local stress concentration, and extend the service life of the box 100 and the beam 500.

[0234] The second fastener 460 provides a reliable connection method, ensuring a firm connection between the box body 100 and the vehicle beam 500, and reducing the risk of loosening during driving.

[0235] For example, the second fastener 460 may be a bolt or a nut.

[0236] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. A battery device (10), characterized in that: The battery device (10) comprises: A box body (100), the box body (100) having at least two boss structures (100a), each of the boss structures (100a) forming a first accommodating cavity; a plurality of battery cells (200), wherein the plurality of battery cells (200) are located in the first accommodating cavity; Wherein, an avoidance portion (102a) is formed between adjacent boss structures (100a), and the avoidance portion (102a) is used to avoid the vehicle beam (500) of the vehicle.

2. The battery device (10) according to claim 1, characterized in that The box body (100) comprises a tray (101) and a cover body (102) connected to each other, and the cover body (102) has the boss structure (100a).

3. The battery device (10) according to claim 2, characterized in that The raised end of the boss structure (100a) is located on a side of the cover (102) facing away from the tray (101); The first accommodating cavity is formed on a side of the boss structure (100a) facing the tray (101).

4. The battery device (10) according to claim 2, characterized in that There are multiple boss structures (100a), and along the first direction, the multiple boss structures (100a) are arranged at intervals; A plurality of battery cells (210) form a first battery cell module (210), and the number of the first battery cell modules (210) is plural; The first accommodating cavity accommodates at least one of the first battery core modules (210).

5. The battery device (10) according to claim 4, characterized in that It also includes an electrical connector (300), wherein the electrical connector (300) connects the first battery core modules (210) of two adjacent first accommodating cavities.

6. The battery device (10) according to claim 5, characterized in that The electrical connector (300) has an electrical connection bending portion (320); Along the first direction, the middle portion of the electrical connector (300) is bent relative to the two ends of the electrical connector (300) in a direction away from the cover (102), forming the electrical connection bending portion (320); The electrical connection bending portion (320) and the avoiding portion (102a) are arranged correspondingly and have matching shapes.

7. The battery device (10) according to claim 6, characterized in that The electrical connector (300) comprises at least two conductive base parts (310), one end of at least two of the conductive base parts (310) is connected to the electrical connection bending part (320), and the other end of the conductive base part (310) is respectively connected to the adjacent first battery core module (210).

8. The battery device (10) according to claim 7, characterized in that The conductive base portion (310) includes a conductive plate (311), the conductive plate (311) is provided with a recessed portion (312), and the pole of the end battery cell (240) located at the end of the first battery cell module (210) is welded to the recessed portion (312).

9. The battery device (10) according to claim 6, characterized in that The electrical connection bending portion (320) comprises a first section (321), a second section (322) and a third section (323) connected in sequence; The first section (321) and the third section (323) both extend along the first direction, and the second section (322) extends along the second direction; the first section (321) and the third section (323) are connected to the first battery cell module (210); The first direction and the second direction intersect.

10. The battery device (10) according to claim 6, characterized in that The outer periphery of the electrical connection bent portion (320) is wrapped with an insulating layer.

11. The battery device (10) according to claim 5, characterized in that The electrical connector (300) is a stamped part or a welded part.

12. The battery device (10) according to claim 6, characterized in that It also includes an insulating member (330), which is arranged between the electrical connector (300) and the first battery core module (210), and the electrical connector (300) is detachably connected to the insulating member (330).

13. The battery device (10) according to any one of claims 2 to 12, characterized in that: The tray (101) is formed with a second accommodating cavity, the cavity opening of the second accommodating cavity faces the cover body (102); The first accommodating cavity of each boss structure (100a) is communicated with the second accommodating cavity.

14. The battery device (10) according to claim 13, characterized in that The battery device further comprises a second battery cell module (220), and the second battery cell module (220) is located in the second accommodating cavity.

15. The battery device (10) according to any one of claims 2 to 12, characterized in that: The tray (101) comprises a mounting member, and the mounting member is used to connect the box body (100) and the vehicle beam (500).

16. The battery device (10) according to claim 15, characterized in that The mounting member includes a first flange (440), and the first flange (440) is provided on at least one side of the tray (101) along the second direction.

17. The battery device (10) according to claim 16, characterized in that The tray (101) is provided with a mounting groove (410), the first flange (440) is provided with a first mounting hole (420), the notch of the mounting groove (410) faces away from the cover body (102), the first mounting hole (420) and the mounting groove (410) are connected, and the first mounting hole (420) is used for allowing a first fastener (430) to pass through.

18. The battery device (10) according to claim 17, characterized in that There are a plurality of first flanges (440), and the plurality of first flanges (440) are arranged at intervals along the circumference of the box body (100).

19. The battery device (10) according to claim 17, characterized in that The cover body (102) is provided with an avoidance notch (104), and the first flange (440) is passed through the avoidance notch (104) to connect with the vehicle beam (500).

20. The battery device (10) according to claim 16, characterized in that The mounting member further includes a second flange (450), which is arranged on at least one side of the tray (101) along the first direction. The second flange (450) is provided with a second mounting hole (470), and the second mounting hole (470) is used for a second fastener (460) to pass through.

21. The battery device (10) according to any one of claims 2 to 12, characterized in that: The avoidance portion (102a) is a avoidance groove; the notch of the avoidance groove is used to face the vehicle beam (500) of the vehicle.

22. The battery device (10) according to claim 21, characterized in that The tray (101) and the cover (102) are arranged along a third direction, the avoidance groove passes through the cover (102) along a second direction, and the second direction and the third direction intersect.

23. The battery device (10) according to claim 22, characterized in that The groove wall of the avoidance groove has an inclination.

24. The battery device (10) according to claim 23, characterized in that The width of the avoidance groove gradually increases along the direction from the groove bottom of the avoidance groove to the groove opening of the avoidance groove.

25. The battery device (10) according to claim 23, characterized in that The groove width of the groove bottom portion close to the avoidance groove is the minimum groove width of the avoidance groove, and the minimum groove width is greater than the width of the longitudinal beam (510) of the vehicle.

26. The battery device (10) according to claim 2, characterized in that Along the second direction, two surfaces at opposite ends of the cover (102) have slopes.

27. The battery device (10) according to claim 26, characterized in that Along the third direction, the width of the cover body (102) along the second direction gradually decreases, and the second direction and the third direction intersect.

28. The battery device (10) according to claim 2, characterized in that The cover body (102) is an injection molded part.

29. The battery device (10) according to any one of claims 2 to 12, characterized in that: The cover (102) is formed with a box protrusion, and a third accommodating cavity is formed on a side of the box protrusion close to the tray (101), and the third accommodating cavity is communicated with the first accommodating cavity; the third accommodating cavity is used to accommodate a power distribution module.

30. A vehicle, characterized in that: include: Car beam (500); The battery device (10) according to any one of claims 1 to 29, wherein the battery device (10) is connected to the vehicle beam (500); and the avoidance portion (102a) of the battery device (10) is used to avoid the vehicle beam (500).

31. The vehicle according to claim 30, characterized in that The vehicle beam (500) includes a cross beam (540) extending in the vehicle width direction; The crossbeam (540) includes a first crossbeam (550) and a second crossbeam (560), and the first crossbeam (550) and the second crossbeam (560) are arranged opposite to each other along the length direction of the vehicle; the tray (101) of the battery device (10) includes at least two first flanges (440) arranged opposite to each other, and the at least two first flanges (440) are respectively connected to the first crossbeam (550) and the second crossbeam (560).

32. The vehicle according to claim 31, characterized in that It also includes a first fastener (430), a portion of which abuts against a side of the first flange (440) facing away from the crossbeam (540), and a portion of the first fastener (430) passes through the first flange (440) and the crossbeam (540).

33. The vehicle according to claim 30, characterized in that The vehicle beam (500) includes a longitudinal beam (510) extending along the length direction of the vehicle; at least a portion of the longitudinal beam (510) is located in an avoidance groove of an avoidance portion (102a) of the battery device (10).

34. The vehicle of claim 32, wherein: The vehicle beam (500) further comprises at least two mounting beams (530), wherein the at least two mounting beams (530) are respectively located on both sides of the first cross beam (550) and the second cross beam (560) along the width direction of the vehicle and are respectively connected to the first cross beam (550) and the second cross beam (560), and the tray (101) comprises at least two second flanges (450) arranged opposite to each other, and the at least two second flanges (450) are respectively connected to the at least two mounting beams (530).

35. The vehicle according to claim 34, characterized in that It also includes a second fastener (460), a portion of which abuts against a side of the mounting beam (530) facing away from the second flange (450), and a portion of the second fastener (460) passes through the second flange (450) and the mounting beam (530).

36. The vehicle of claim 30, wherein: There are multiple battery devices (10), and the multiple battery devices (10) are arranged in sequence along the length direction of the vehicle.

Images