Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, the battery device comprises a box body, a battery monomer assembly and an electrical assembly, the box body comprises a first box body and a second box body, the first box body comprises a bottom wall, a first side wall and a second side wall, the first side wall and the second side wall are arranged in the circumferential direction of the bottom wall in a surrounding manner, and the first side wall and the second side wall are arranged in parallel; the first box body comprises a first side wall and a second side wall, the height of the first side wall is larger than that of the second side wall, the second box body comprises a top wall, a third side wall and a fourth side wall, the third side wall and the fourth side wall are arranged in the circumferential direction of the top wall in a surrounding mode, the height of the third side wall is smaller than that of the fourth side wall, and under the condition that the first box body and the second box body are covered, the top wall and the bottom wall are arranged at intervals in the height direction; the first side wall is matched and connected with the third side wall, the second side wall is matched and connected with the fourth side wall, and the first side wall is used for mounting and fixing an electrical assembly. According to the invention, the box body can be well thinned, and the design size and the manufacturing precision of the box body can be well met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic battery, in particular to a battery device and a power utilization device. BACKGROUND

[0002] At present, from the development of market situation, the application of power battery is more and more extensive. The power battery is not only applied to the energy storage power supply system of hydroelectric, thermal, wind and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the market demand is also increasing.

[0003] With the increase of market demand for power battery, higher requirements are put forward for the size of power battery. For example, for the sheet metal box body of power battery, the side wall of the box body is generally used as a connector mounting panel, and mounting holes of connector or water cooling flange and other parts are provided on the mounting panel for connection with the related system of the vehicle end. However, for the sheet metal box body with upper box body and lower box body matched with each other, the upper box body not only needs to form an effective sealing interface with the lower box body, but also needs to form an effective sealing interface with the mounting panel. Therefore, the design size and manufacturing precision of the upper box body, the lower box body and the mounting panel are required to be higher. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, one object of the present application is to provide a battery device which can thin the box body and meet the design size and manufacturing precision of the box body.

[0005] The present application also provides a power utilization device with the battery device.

[0006] The battery device according to the embodiments of the present application comprises: a box body comprising a first box body and a second box body, the first box body and the second box body being covered to form an accommodating cavity inside; a battery monomer assembly arranged in the accommodating cavity; and an electrical assembly arranged in the accommodating cavity and connected with the battery monomer assembly, wherein the first box body comprises a bottom wall, a first side wall and a second side wall, the first side wall and the second side wall are arranged around the circumference of the bottom wall, the height of the first side wall is greater than the height of the second side wall, the second box body comprises a top wall, a third side wall and a fourth side wall, the third side wall and the fourth side wall are arranged around the circumference of the top wall, the height of the third side wall is less than the height of the fourth side wall, the top wall and the bottom wall are arranged in the height direction with a spacing in the case of covering the first box body and the second box body, the first side wall and the third side wall are connected in cooperation, the second side wall and the fourth side wall are connected in cooperation, and the first side wall is used for mounting and fixing the electrical assembly.

[0007] In the above example, by making the height of the first side wall greater than the height of the second side wall, and the height of the third side wall less than the height of the fourth side wall, for the first side wall that needs to be assembled with electrical components, the second side wall does not need to be the same size as the first side wall in the thickness direction. Therefore, the thickness of the first box body can be effectively reduced while meeting the assembly requirements of the electrical components. Similarly, for the third side wall that cooperates with the first side wall above and below, the third side wall does not need to be the same size as the fourth side wall in the thickness direction. Therefore, the thickness of the second box body can be effectively reduced. The thickness of the first box body and the second box body are both reduced, so that the thickness of the box body obtained after the first box body and the second box body are assembled is effectively reduced, which is conducive to thinning the battery device. In addition, through the design of the above structure, the first side wall, the second side wall, the third side wall, and the fourth side wall have simple structures and low production costs, and the first side wall can be effectively sealed and connected to the third side wall, and the second side wall can be effectively sealed and connected to the fourth side wall, which can meet the design size and manufacturing accuracy requirements of the box body.

[0008] In some embodiments of the present application, the first side wall and the bottom wall are integrally stamped metal parts.

[0009] In the above example, the first side wall and the bottom wall are integrally stamped metal parts, which have good structural strength and are simple and convenient to produce, and can effectively reduce processing costs.

[0010] In some embodiments of the present application, the first side wall has a first flange at one end facing the second box body, the first flange is folded outward from the accommodating cavity, and the third side wall is provided with a second flange corresponding to the first flange.

[0011] In the above example, the first flange folded toward the outside of the accommodating cavity can reduce interference with the accommodating cavity, and when the battery cell assembly is assembled in the accommodating cavity, the risk to the battery cell assembly can be reduced. In addition, in the related art, the sealing interface between the upper box body and the lower box body needs to retain a certain sealing width. This width cannot be compressed, which easily increases the overall thickness of the battery box. In the present application, a first flange folded toward the outside of the accommodating cavity is set on the first side wall, and a second flange folded toward the outside of the accommodating cavity is set on the third side wall. In this way, when the first side wall and the third side wall are fixedly connected, the sealing interface needs to retain a certain sealing width on the first flange and the third flange. In this way, the influence of the first side wall and the third side wall on the thickness of the box body in the thickness direction can be reduced, which is beneficial to reducing the overall thickness of the battery box.

[0012] In some embodiments of the present application, a first positioning portion is provided on the first flange, and a second positioning portion is provided on the second flange to be positioned and matched with the first positioning portion.

[0013] In the above example, the positioning cooperation between the first positioning portion and the second positioning portion can reduce the difficulty of positioning between the first flange and the second flange, and can reduce the risk of misalignment between the first flange and the second flange when the first flange and the second flange are fixedly connected, thereby improving the assembly efficiency of the first flange and the second flange. Moreover, when the first flange and the second flange are fixedly connected, the positioning cooperation between the first positioning portion and the second positioning portion has made the position between the first flange and the second flange relatively stable, so that the first flange and the second flange can be fixedly connected more easily by welding or screwing, thereby reducing the difficulty of fixing between the first flange and the second flange.

[0014] In some embodiments of the present application, the first positioning portion includes a positioning protrusion, the second positioning portion includes a positioning hole, and the positioning protrusion is positioned and fitted in the positioning hole.

[0015] In the above example, when the first flange and the second flange fit together, the positioning protrusion can be embedded in the positioning hole. The cooperation between the positioning protrusion and the positioning hole can ensure precise alignment between the parts and reduce installation errors. During the assembly process, the positioning protrusion and the positioning hole can quickly guide the components into the correct position, thereby simplifying the assembly process and improving production efficiency. The close cooperation between the positioning protrusion and the positioning hole can increase the contact area between the components, improve the stability of the overall structure, and prevent loosening or misalignment. Reasonable positioning design can disperse stress and avoid stress concentration caused by improper installation, thereby extending the service life of the product. A good positioning mechanism makes it easier to operate during subsequent maintenance or disassembly, without difficulties caused by inaccurate positioning.

[0016] In some embodiments of the present application, at least one of the positioning protrusions is provided with a fixing hole passing through the first flange.

[0017] In the above example, the presence of the fixing hole allows fasteners such as screws and rivets to pass through the fixing hole to firmly connect the positioning protrusion to the corresponding base or another component, thereby improving the stability and reliability of the entire structure.

[0018] In some embodiments of the present application, the first flange includes a first section and a second section and a third section connected at both ends of the first section, wherein the first section is parallel to the bottom wall and spaced apart from the bottom wall in the height direction, and the end of the second section away from the first section and the end of the third section away from the first section both extend obliquely toward the bottom wall.

[0019] In the above example, the first section is parallel to the bottom wall and spaced apart from the bottom wall in the height direction, and the end of the second section away from the first section and the end of the third section away from the first section both extend obliquely toward the bottom wall, so that the design of the first side wall can make the box more stable in the vertical direction, especially when the box is high or needs to bear a certain weight, thereby improving the reliability of the first box.

[0020] In some embodiments of the present application, a plurality of fixing holes are provided on the first section, the second section and the third section, and a distance L1 between two adjacent fixing holes on the first section, a distance L2 between two adjacent fixing holes on the second section, and a distance L3 between two adjacent fixing holes on the third section satisfy the following conditions: L1>L2, L1>L3.

[0021] In the above example, the second section and the third section are both inclined, and when the box is fixed, stress is easily concentrated at the second section and the third section. By arranging the positions of the fixing holes on the first section, the second section and the third section, more fixing holes are arranged on the second section and the third section, which can improve the connection strength and structural strength of the second section and the third section, thereby improving the reliability of the box as a whole.

[0022] In some embodiments of the present application, the first segment and the second segment are transitioned through a first arc segment, and the arc angle R1 of the first arc segment satisfies: 0°<R1≤60°; and / or, the first segment and the third segment are transitioned through a second arc segment, and the arc angle R2 of the second arc segment satisfies: 0°<R2≤60°.

[0023] In the above example, the first and second segments are both straight segments. By introducing an arc to connect the two straight segments, the overall shape can be made smoother and stress concentration can be reduced. Especially when subjected to external force or internal pressure, the arc transition can evenly distribute stress and improve the overall strength of the box. During the manufacturing process, the arc transition is easier to process than the right-angle transition, especially for certain materials, such as plastics or metal sheets, which are easier to form an arc shape when bent. During the manufacturing process, the arc transition is easier to process than the right-angle transition, especially for certain materials, such as plastics or metal sheets, which are easier to form an arc shape when bent.

[0024] In some embodiments of the present application, the angle a1 between the first segment and the second segment satisfies: 135≤a1<180°; and / or the angle a2 between the first segment and the third segment satisfies: 135≤a1<180°.

[0025] In the above example, by making the included angle a1 and the included angle a2 satisfy the above condition, the thickness of the box body can be thinned while the load-bearing strength of the battery box body is ensured as much as possible.

[0026] In some embodiments of the present application, the second section and the third section are symmetrically arranged at two ends of the first section.

[0027] In the above example, the symmetric design can make the structure more stable, better withstand gravity or external force, and improve the reliability of the box body.

[0028] In some embodiments of the present application, the box body further comprises a pressing strip, the pressing strip is arranged on the side of the second flange away from the first flange.

[0029] In the above example, the pressing strip can improve the structural strength of the first flange and the second flange, prevent the first flange and the second flange from deforming, and better increase the fastening effect between the first flange and the second flange, thereby improving the reliability of the sealing between the first flange and the second flange, and preventing moisture, dust and other impurities from entering the box body.

[0030] In some embodiments of the present application, the second side wall has a third flange at one end thereof, the third flange is outwardly folded towards the outside of the accommodating cavity, one end of the third flange is connected with one end of the first flange, the other end of the third flange is connected with the other end of the first flange, the fourth side wall has a fourth flange corresponding to the third flange, both ends of the fourth flange are connected with both ends of the second flange respectively, the box body further comprises a pressing strip, the pressing strip is arranged on the side of the second flange away from the first flange, and / or the pressing strip is arranged on the side of the fourth flange away from the third flange.

[0031] In the above example, the pressing strip can improve the structural strength of the flange (the flange is any one of the first flange, the second flange, the third flange and the fourth flange), prevent the flange from deforming, and better increase the fastening effect between the two flanges fixedly connected, thereby improving the reliability of the sealing between the two flanges, and preventing moisture, dust and other impurities from entering the box body.

[0032] In some embodiments of the present application, the plurality of the pressing strips includes a first pressing strip and a second pressing strip, the first pressing strip extends from the first section to a position corresponding to the third flange via the second section, and the second pressing strip extends from the first section to a position corresponding to the third flange via the third section.

[0033] In the above example, the first pressing strip and the second pressing strip can better increase the fastening effect between the two flanges fixedly connected, thereby improving the reliability of the sealing between the two flanges and preventing moisture, dust and other impurities from entering the box.

[0034] In some embodiments of the present application, the plurality of the pressing strips includes the first pressing strip, the second pressing strip and a third pressing strip, the third pressing strip corresponds to the position of the third flange, and the first pressing strip, the second pressing strip and the third pressing strip are arranged at intervals.

[0035] In the above example, by arranging the first pressing strip, the second pressing strip and the third pressing strip, the reliability of the connection between the first box and the second box can be better improved, and the first pressing strip, the second pressing strip and the third pressing strip are arranged at intervals, so that the adjacent two are not easy to interfere with each other.

[0036] In some embodiments of the present application, the first box has a plurality of mounting portions on the edges on both sides in the second direction, the plurality of mounting portions are arranged at intervals in the first direction, and the box is fixed on the electrical device through the mounting portions.

[0037] In the above example, the box can be mounted on the electrical device through the plurality of mounting portions. Compared with the mounting beams arranged on both sides of the box in the width direction in the related art, the plurality of mounting portions can replace the mounting beams extending in the first direction, thereby reducing the weight of the box to facilitate lightweight setting. In this way, in combination with the thinning setting of the thickness of the box, the box can effectively have the characteristics of being light and thin.

[0038] In some embodiments of the present application, the first box has a bottom cross beam and a bottom longitudinal beam, and the bottom cross beam and / or the bottom longitudinal beam are connected with the mounting portions.

[0039] In the above example, by connecting the mounting portions with the bottom cross beam and the bottom longitudinal beam, the structural strength of the mounting portions can be effectively improved, so that the box can be fixed on the electrical device through the mounting portions.

[0040] In some embodiments of the present application, the mounting portion comprises a first layer plate and a second layer plate, the first layer plate is connected with the bottom cross beam, the second layer plate is connected with the bottom longitudinal beam, at least part of the first layer plate and the second layer plate are spaced apart in the third direction, the first layer plate and the second layer plate are respectively provided with opposite first and second mounting holes, and a mounting sleeve is arranged in the second mounting hole and abuts against the surface of the first layer plate facing the second layer plate.

[0041] In the above example, the first layer plate is connected with the bottom cross beam, and the second layer plate is connected with the bottom longitudinal beam, which can better improve the structural strength of the mounting portion; by spacing at least part of the first layer plate and the second layer plate in the third direction, a certain deformation space can be provided for the first layer plate and the second layer plate, which can reduce the deformation ability of the mounting portion under the action of the impact force and the like, and the mounting portion with deformation ability will not directly break under the action of the impact force and the like, thereby the mounting portion of the present application has better reliability.

[0042] In some embodiments of the present application, the bottom cross beam and the first layer plate are an integral molded part, and / or the bottom longitudinal beam and the second layer plate are an integral molded part.

[0043] In the above example, the first layer plate can be configured to extend outwardly from the bottom cross beam, and the second layer plate can be configured to extend outwardly from the bottom longitudinal beam, thereby the first layer plate and the second layer plate can have better structural strength, and the mounting portion of the present application has better reliability.

[0044] In some embodiments of the present application, in the third direction, the first layer plate is located between the second layer plate and the bottom wall, and the distance D between the lower surface of the first layer plate and the lower surface of the bottom wall satisfies: D>D1+D2, wherein D1 is the thickness of the bracket plate, and D2 is the thickness of the nut mounted on the bracket plate.

[0045] In the above example, satisfying the condition D>D1+D2 can make the bracket plate and the nut not exposed downwardly from the lower surface of the bottom wall, so that the hoisting bolt, the bracket plate and the nut are not easy to interfere with the external structure when the battery device is assembled.

[0046] In some embodiments of the present application, in the third direction, the thickness H of the box body satisfies: 20mm≤H≤50mm.

[0047] In the above example, satisfying the above condition can make the battery device have a relatively thin thickness, which is conducive to the assembly of the battery device and optimizes the position arrangement of the battery device.

[0048] In some embodiments of the present application, the first side wall has a first assembly hole, a second assembly hole and a third assembly hole, the third assembly hole is located between the first assembly hole and the second assembly hole in the second direction, the high-voltage connector is mounted at the first assembly hole, the low-voltage connector is mounted at the second assembly hole, and the heat exchange connector is mounted at the third assembly hole.

[0049] In the above examples, the positions of the high-voltage connector, the low-voltage connector and the heat exchange connector can be well arranged.

[0050] In some embodiments of the present application, a plurality of battery cell assemblies are provided, and the plurality of battery cell assemblies are arranged in sequence along a first direction, each battery cell assembly includes a plurality of battery cells arranged in a second direction in a stacked manner, the second direction is the thickness direction of the battery cell, and the second direction intersects the first direction.

[0051] In the above examples, the space of the accommodation cavity can be well utilized by arranging the battery cells, and the arrangement of the battery cells is optimized.

[0052] The present application also provides a power consumption device having the battery device of the above embodiments.

[0053] According to the power consumption device of the embodiments of the present application, by providing the battery device of the above embodiments, the cost of the power consumption device can be reduced by reducing the cost of the battery device, and meanwhile, the thinned battery device can optimize the arrangement of each part of the power consumption device.

[0054] In some embodiments of the present application, the power consumption device is a vehicle, a plurality of battery cell assemblies are provided, and the plurality of battery cell assemblies are arranged in sequence along a first direction, the first direction is the front-rear direction of the vehicle.

[0055] In the above examples, by the above arrangement, the battery device can be arranged at the bottom of the vehicle, and the space at the bottom of the vehicle can be well optimized.

[0056] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0057] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0058] Figure 1 A schematic view of a vehicle is provided for some embodiments of the present application.

[0059] Figure 2Structural schematic diagram of a battery device provided for some embodiments of the present application.

[0060] Figure 3 Exploded view of a battery device provided for some embodiments of the present application.

[0061] Figure 4 Structural schematic diagram of a first box body for some embodiments of the present application. Figure 3

[0062] Figure 5 Structural schematic diagram of a first box body for some embodiments of the present application.

[0063] Figure 6 Structural schematic diagram of a first box body for some embodiments of the present application.

[0064] Figure 7 Partial sectional view of a first box body at a mounting portion for some embodiments of the present application.

[0065] Reference signs:

[0066] X, first direction; Y, second direction; Z, third direction;

[0067] 10, box body;

[0068] 1, first box body; 11, bottom wall; 12, first side wall; 121, first flange; 1211, positioning protrusion; 1212, fixing hole; 13, second side wall; 131, third flange;

[0069] 2, second box body; 21, top wall; 22, third side wall; 221, second flange; 2211, positioning hole; 23, fourth side wall; 231, fourth flange;

[0070] 311, first segment; 312, second segment; 313, third segment; 314, first circular arc segment; 315, second circular arc segment;

[0071] 4, pressing strip; 41, first pressing strip; 42, second pressing strip; 43, third pressing strip;

[0072] 5, mounting portion; 51, first layer plate; 52, second layer plate; 53, mounting sleeve; 54, support plate; 55, nut;

[0073] 61, first assembly hole; 62, second assembly hole; 63, third assembly hole; 64, high-voltage connector; 65, low-voltage connector; 66, heat exchange connector;

[0074] 71, bottom cross beam; 72, bottom longitudinal beam;

[0075] 20, battery cell assembly; 201, battery cell; ​

[0076] 1000 vehicle; 100 battery device; 200 controller; 300 motor. DETAILED DESCRIPTION

[0077] Embodiments of the present application are described below in detail with reference to examples illustrated in the accompanying drawings, in which like or similar elements or components are denoted throughout by like reference numerals, and descriptions of which are not repeated. The embodiments described below by reference to the drawings are examples only, and are merely for the purpose of illustrating the present application, and should not be construed as limiting the present application.

[0078] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0079] In the description of the present application, it needs to be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] If not specifically stated, all embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions.

[0081] If not specifically stated, all technical features and optional technical features of the present application can be combined with each other to form new technical solutions.

[0082] At present, from the development of market situation, the application of power battery is more and more extensive. Power battery is not only applied to energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric vehicles such as electric bicycle, electric motorcycle, electric vehicle, electric traffic tools, military equipment and aerospace and other fields. With the continuous expansion of the application field of power battery, the market demand is also increasing.

[0083] With the increasing market demand of power battery, higher requirements are put forward for the size of power battery. For example, for the power battery with sheet metal box body, the side wall of the box body is generally used as the connector mounting panel, and mounting holes for connecting the connector or water cooling flange and other parts are provided on the panel, which is used for connecting with the related system of the vehicle end. However, for the sheet metal box body with upper box body and lower box body matched in upper and lower directions, the upper box body not only needs to form an effective sealing interface with the lower box body, but also needs to form an effective sealing interface with the mounting panel. Therefore, the design size and manufacturing precision of the upper box body, the lower box body and the mounting panel are required to be higher.

[0084] Based on the above consideration, in the present application, the height of the first side wall 12 of the first box body 1 is greater than the height of the second side wall 13, and the height of the third side wall 22 of the second box body 2 is less than the height of the fourth side wall 23. For the first side wall 12 which needs to assemble electrical components, in the thickness direction, the second side wall 13 does not need to have the same size as the first side wall 12, so that the thickness of the first box body 1 can be effectively reduced while meeting the assembly requirements of the electrical components. Similarly, for the third side wall 22 matched with the first side wall 12 in upper and lower directions, in the thickness direction, the third side wall 22 also does not need to have the same size as the fourth side wall 23, so that the thickness of the second box body 2 can be effectively reduced. The thickness of the first box body 1 and the second box body 2 is reduced, so that the size of the box body 10 obtained after the assembly of the first box body 1 and the second box body 2 is effectively reduced in the thickness direction, thereby facilitating the thinning of the battery device 100. Moreover, through the design of the above structure, the first side wall 12, the second side wall 13, the third side wall 22 and the fourth side wall 23 have simple structure and low production cost, and the first side wall 12 and the third side wall 22 can be effectively sealed and connected, and the second side wall 13 and the fourth side wall 23 can be effectively sealed and connected, which can meet the requirements of the design size and manufacturing precision of the box body 10.

[0085] The battery device disclosed in the present application can be used as a power supply for a power consumption device or as a variety of energy storage systems for energy storage elements. The power consumption device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0086] The following embodiments are described by taking a vehicle 1000 as an example for convenience of description.

[0087] Referring to Figure 1 , Figure 1 A schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile, or a range extended automobile, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, head or tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as an operating power source of the vehicle 1000. The battery device 100 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery to supply power to the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation and driving.

[0088] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0089] Referring to Figures 2-5 , Figure 2 A structural schematic diagram of the battery device 100 is provided for some embodiments of the present application. Figure 3 An exploded view of the battery device 100 is provided for some embodiments of the present application. Figure 4 A structural schematic diagram of the first box 1 is provided for some embodiments of the present application. Figure 3 An enlarged view of the A area in FIG. 1. Figure 5 A structural schematic diagram of one corner of the first box 1 is provided for some embodiments of the present application.

[0090] In some embodiments of the present application, the battery device 100 includes a box 10, a battery monomer assembly 20 and an electrical assembly, the box 10 includes a first box 1 and a second box 2, the first box 1 and the second box 2 are combined to form an accommodating cavity in the interior, and the battery monomer assembly 20 is arranged in the accommodating cavity; the electrical assembly is arranged in the accommodating cavity, and the electrical assembly is connected with the battery monomer assembly 20.

[0091] In this example, the thickness direction is the up-down direction for ease of description. Specifically, the box body 10 is a box structure composed of two parts, which is used to package the battery monomer assembly 20 and the electrical assembly. The box body 10 is generally used to protect the internal battery monomer assembly 20 from the external environment, and can provide certain mechanical strength. The box body 10 is divided into a first box body 1 and a second box body 2, which can be closed together to form a sealed or semi-sealed space, i.e. a containing cavity. The containing cavity is a space in the box body 10 for placing all internal components. It is formed by the closure of the first box body 1 and the second box body 2, and can protect the internal components from physical damage or external factors. The battery monomer assembly 20 refers to the part that actually stores electrical energy, which is usually a module composed of multiple battery monomers 201. These battery monomers 201 can be connected in series or parallel to provide the required voltage and current. The electrical assembly can include circuit boards, protection circuits, temperature sensors, etc., which are connected to the battery monomer assembly 20 for monitoring the battery state, managing the charging and discharging process, etc. The electrical assembly can also include low-voltage connectors 65, high-voltage connectors 64, and heat exchange connectors 66, which will not be described in detail in this application.

[0092] Further, the first box body 1 includes a bottom wall 11, a first side wall 12 and a second side wall 13, the first side wall 12 and the second side wall 13 are arranged around the circumference of the bottom wall 11, the height of the first side wall 12 is greater than the height of the second side wall 13, the second box body 2 includes a top wall 21, a third side wall 22 and a fourth side wall 23, the third side wall 22 and the fourth side wall 23 are arranged around the circumference of the top wall 21, the height of the third side wall 22 is less than the height of the fourth side wall 23, and in the closed state of the first box body 1 and the second box body 2, the top wall 21 and the bottom wall 11 are arranged in the height direction, the first side wall 12 and the third side wall 22 are connected, the second side wall 13 and the fourth side wall 23 are connected, and the first side wall 12 is used to mount and fix the electrical assembly.

[0093] Exemplarily, the first box body 1 enclosed by the bottom wall 11, the first side wall 12 and the second side wall 13 has a first containing cavity with an opening downward, and the second box body 2 enclosed by the top wall 21, the third side wall 22 and the fourth side wall 23 has a second containing cavity with an opening upward, and in the closed state of the first box body 1 and the second box body 2, the first side wall 12 and the third side wall 22 are connected in the up-down direction, and the second side wall 13 and the fourth side wall 23 are connected in the up-down direction. Since the height of the first side wall 12 is greater than the height of the second side wall 13, there is enough space on the first side wall 12 to assemble the electrical assembly, which can reduce the assembly difficulty and improve the assembly efficiency.

[0094] In addition, in the structure matching of the first box body 1 and the second box body 2, the first side wall 12 and the second side wall 13 correspond to a lower annular peripheral wall surrounding the outer peripheral side of the bottom wall 11, and the third side wall 22 and the fourth side wall 23 correspond to an upper annular peripheral wall surrounding the outer peripheral side of the top wall 21. Since the height of the first side wall 12 is greater than the height of the second side wall 13, the portion of the first side wall 12 that protrudes upward beyond the second side wall 13 corresponds to a protruding portion on the lower annular peripheral wall. Since the height of the third side wall 22 is less than the height of the fourth side wall 23, the third side wall 22 is lower than the fourth side wall 23 in the upward direction, thereby forming a recessed portion of the upper annular peripheral wall. The protruding portion and the recessed portion are fitted into each other, thereby completing the assembly of the first box body 1 and the second box body 2. In addition, the fitting of the protruding portion and the recessed portion allows sufficient space for the electrical assembly to be assembled on the first side wall 12, and effectively reduces the thickness of the box body 10.

[0095] In other words, for the first side wall 12 that needs to be assembled with the electrical assembly, the second side wall 13 does not need to have the same size as the first side wall 12 in the thickness direction. Therefore, the thickness of the first box body 1 can be effectively reduced while meeting the assembly requirements of the electrical assembly. Similarly, for the third side wall 22 that matches the first side wall 12 in the upward and downward directions, the third side wall 22 does not need to have the same size as the fourth side wall 23 in the thickness direction. Therefore, the thickness of the second box body 2 can be effectively reduced. The thicknesses of the first box body 1 and the second box body 2 are both reduced, thereby effectively reducing the size of the box body 10 in the thickness direction after the assembly of the first box body 1 and the second box body 2.

[0096] In the above example, by making the height of the first side wall 12 greater than the height of the second side wall 13 and the height of the third side wall 22 less than the height of the fourth side wall 23, for the first side wall 12 that needs to be assembled with the electrical assembly, the second side wall 13 does not need to have the same size as the first side wall 12 in the thickness direction. Therefore, the thickness of the first box body 1 can be effectively reduced while meeting the assembly requirements of the electrical assembly. Similarly, for the third side wall 22 that matches the first side wall 12 in the upward and downward directions, the third side wall 22 does not need to have the same size as the fourth side wall 23 in the thickness direction. Therefore, the thickness of the second box body 2 can be effectively reduced. The thicknesses of the first box body 1 and the second box body 2 are both reduced, thereby effectively reducing the size of the box body 10 in the thickness direction after the assembly of the first box body 1 and the second box body 2. Thus, the battery device 100 is thinned. In addition, by the above structure, the first side wall 12, the second side wall 13, the third side wall 22, and the fourth side wall 23 have simple structures and low production costs. The first side wall 12 and the third side wall 22 are effectively and sealingly connected, and the second side wall 13 and the fourth side wall 23 are effectively and sealingly connected. The design size and manufacturing precision of the upper box body 10 and the lower box body 10 can be met.

[0097] In some embodiments of the present application, reference is made toFigure 5 , Figure 5 The first side wall 12 and the bottom wall 11 are integrally stamped metal parts.

[0098] In the above example, the first side wall 12 and the bottom wall 11 are integrally stamped metal parts, which have good structural strength and are simple and convenient to produce, thereby effectively reducing processing costs.

[0099] Exemplarily, the first box body 1 is formed by integrally stamping a metal sheet, that is, after the metal sheet is stamped, a bottom wall 11 and a first side wall 12 and a second side wall 13 connected to the bottom wall 11 are constructed. The integrally stamped first box body 1 has good structural strength and is simple and convenient to produce, which can effectively reduce processing costs.

[0100] In some embodiments of the present application, reference is made to Figure 3 and Figure 5 The first side wall 12 has a first flange 121 at one end facing the second box body 2 , and the first flange 121 is folded outward from the accommodating cavity. The third side wall 22 is provided with a second flange 221 corresponding to the first flange 121 .

[0101] In the above example, the first flange 121 folded toward the outside of the accommodating cavity can reduce interference with the accommodating cavity, and when the battery cell assembly 20 is assembled in the accommodating cavity, the risk to the battery cell assembly 20 can be reduced. In addition, in the related art, the sealing interface between the upper box body 10 and the lower box body 10 needs to retain a certain sealing width. This width cannot be compressed and easily increases the overall thickness of the battery box. In the present application, a first flange 121 folded toward the outside of the accommodating cavity is provided on the first side wall 12, and a second flange 221 folded toward the outside of the accommodating cavity is provided on the third side wall 22. In this way, when the first side wall 12 and the third side wall 22 are fixedly connected, the sealing interface needs to retain a certain sealing width on the first flange 121 and the third flange 131. In this way, the influence of the first side wall 12 and the third side wall 22 on the thickness of the box body 10 in the thickness direction can be reduced, thereby helping to reduce the overall thickness of the battery box.

[0102] In some examples of the present application, a first positioning portion is provided on the first flange 121 , and a second positioning portion that is positioned and matched with the first positioning portion is provided on the second flange 221 .

[0103] In the above example, through the positioning cooperation between the first positioning part and the second positioning part, the positioning difficulty between the first flange 121 and the second flange 221 can be reduced, and the risk of misalignment between the first flange 121 and the second flange 221 when the first flange 121 and the second flange 221 are fixedly connected can be reduced, thereby improving the assembly efficiency of the first flange 121 and the second flange 221. In addition, through the positioning cooperation between the first positioning part and the second positioning part, the positions of the first flange 121 and the second flange 221 are relatively stable when the first flange 121 and the second flange 221 are fixedly connected, so that the first flange 121 and the second flange 221 can be fixedly connected in a welding or screwing manner more easily, thereby reducing the fixing difficulty between the first flange 121 and the second flange 221.

[0104] Exemplarily, the first positioning part and the second positioning part are both provided with a plurality of positioning parts, and the plurality of first positioning parts and the plurality of second positioning parts are one-to-one corresponding.

[0105] In some embodiments of the present application, referring to Figure 3 and Figure 4 the first positioning part comprises a positioning protrusion 1211, the second positioning part comprises a positioning hole 2211, and the positioning protrusion 1211 is positioned and cooperated in the positioning hole 2211.

[0106] Exemplarily, the positioning protrusion 1211 is a cylindrical protrusion, and the positioning hole 2211 is a circular hole. The outer diameter of the cylindrical protrusion is less than or equal to the inner diameter of the circular hole, and preferably, the outer diameter of the cylindrical protrusion is equal to the inner diameter of the circular hole. It should be noted that the positioning protrusion 1211 and the positioning hole 2211 can also have other shapes. For example, the positioning hole 2211 can also be a square hole, an oval hole, etc., and the present application does not limit the shape of the positioning hole 2211.

[0107] In the above example, when the first flange 121 and the second flange 221 are attached to each other, the positioning protrusion 1211 can be embedded in the positioning hole 2211. The cooperation between the positioning protrusion 1211 and the positioning hole 2211 can ensure accurate alignment between parts and reduce installation errors. During the assembly process, the positioning protrusion 1211 and the positioning hole 2211 can quickly guide the components to the correct position, thereby simplifying the assembly process and improving production efficiency. Through the close cooperation between the positioning protrusion 1211 and the positioning hole 2211, the contact area between the components can be increased, the stability of the overall structure can be improved, and the loosening or misalignment can be prevented. Reasonable positioning design can disperse stress and avoid stress concentration caused by improper installation, thereby prolonging the service life of the product. Good positioning mechanism makes it easier to operate during subsequent maintenance or disassembly, and does not cause difficulties due to inaccurate positioning.

[0108] In some embodiments of the present application, referring to Figure 3 and Figure 4At least one positioning protrusion 1211 is provided with a fixing hole 1212 penetrating the first flange 121.

[0109] In the above example, the presence of the fixing hole 1212 makes it possible to pass a fixing member such as a screw or a rivet through the fixing hole 1212 to firmly connect the positioning protrusion 1211 with a corresponding base or another component, thereby improving the stability and reliability of the entire structure.

[0110] In some embodiments of the present application, with reference to Figure 3 and Figure 5 the first flange 121 includes a first section 311 and second and third sections 312 and 313 connected at both ends of the first section 311, wherein the first section 311 is parallel to the bottom wall 11 and spaced apart from the bottom wall 11 in the height direction, and the end of the second section 312 away from the first section 311 and the end of the third section 313 away from the first section 311 both extend obliquely toward the bottom wall 11.

[0111] It should be noted that the first flange 121 is formed by folding outward the first side wall 12 at one end of the second box body 2 toward the accommodation cavity, and therefore the end of the second section 312 away from the first section 311 and the end of the third section 313 away from the first section 311 both extending obliquely toward the bottom wall 11 also substantially indicates that the first side wall 12 is a trapezoidal wall panel.

[0112] As shown in one example in Figure 3 and Figure 5 the first side wall 12 is an isosceles trapezoid, the first section 311 is located at the "top side" of the trapezoid, and the second and third sections 312 and 313 are located at the two "waists" of the trapezoid. The design of the isosceles trapezoid can make the box body 10 more stable in the vertical direction, especially when the box body 10 is relatively high or needs to bear a certain weight, thereby improving the reliability of the first box body 1.

[0113] Exemplarily, the first side wall 12 can also be a trapezoid with two unequal "waists".

[0114] In the above example, by making the first section 311 parallel to the bottom wall 11 and spaced apart from the bottom wall 11 in the height direction, and making the end of the second section 312 away from the first section 311 and the end of the third section 313 away from the first section 311 both extend obliquely toward the bottom wall 11, the design of the first side wall 12 can make the box body 10 more stable in the vertical direction, especially when the box body 10 is relatively high or needs to bear a certain weight, thereby improving the reliability of the first box body 1.

[0115] In some embodiments of the present application, with reference to Figure 3 and Figure 5The first section 311, the second section 312, and the third section 313 are each provided with a plurality of fixing holes 1212, the distance L1 between two adjacent fixing holes 1212 on the first section 311, the distance L2 between two adjacent fixing holes 1212 on the second section 312, and the distance L3 between two adjacent fixing holes 1212 on the third section 313 satisfy: L1>L2, L1>L3.

[0116] In the above example, the second section 312 and the third section 313 are both inclined, and stress is easily concentrated at the second section 312 and the third section 313 when the box body 10 is fixed. By arranging the positions of the fixing holes 1212 on the first section 311, the second section 312, and the third section 313, more fixing holes 1212 are arranged on the second section 312 and the third section 313, which can improve the connection strength and structural strength of the second section 312 and the third section 313, thereby improving the reliability of the box body 10 as a whole.

[0117] In some embodiments of the present application, with reference to Figure 3 and Figure 5 the first section 311 and the second section 312 are connected by a first arc section 314, and the arc angle R1 of the first arc section 314 satisfies: 0°<R1≤60°. In some embodiments of the present application, the first section 311 and the third section 313 are connected by a second arc section 315, and the arc angle R2 of the second arc section 315 satisfies: 0°<R2≤60°.

[0118] In the above example, the first section 311 and the second section 312 are both straight sections, and the two straight sections are connected by an arc, which can make the overall shape more smooth, reduce stress concentration, and improve the overall strength of the box body 10. In addition, the arc transition is easier to process than the right-angle transition, especially for some materials such as plastic or metal sheet, which is easier to form an arc shape when bent.

[0119] In some embodiments of the present application, the included angle a1 between the first section 311 and the second section 312 satisfies: 135≤a1<180°; and / or, the included angle a2 between the first section 311 and the third section 313 satisfies: 135≤a1<180°.

[0120] In the above example, by satisfying the above conditions for the included angle a1 and the included angle a2, the thickness of the box body 10 can be reduced while the load-bearing strength of the box body 10 is ensured as much as possible.

[0121] In some embodiments of the present application, with reference to Figure 3 and Figure 5 , the second section 312 and the third section 313 are symmetrically arranged at two ends of the first section 311. That is, the second section 312 and the third section 313 are consistent in shape, size, etc., and are respectively located at two ends of the first section 311, forming a mirror-symmetrical effect.

[0122] In the above example, the symmetrical design can make the structure more stable, better withstand gravity or external force, and improve the reliability of the box 10.

[0123] In some embodiments of the present application, with reference to Figure 2 and Figure 3 , the box 10 further comprises a pressing strip 4, and the pressing strip 4 is arranged on the side of the second flange 221 away from the first flange 121.

[0124] In the above example, the pressing strip 4 can improve the structural strength of the first flange 121 and the second flange 221, and avoid deformation of the first flange 121 and the second flange 221. By improving the structural strength of the first flange 121 and the second flange 221, the pressing strip 4 can better increase the fastening effect between the first flange 121 and the second flange 221, thereby improving the reliability of the sealing between the first flange 121 and the second flange 221, and preventing impurities such as moisture and dust from entering the inside of the box 10.

[0125] In some embodiments of the present application, with reference to Figure 2 and Figure 3 , the second side wall 13 has a third flange 131 at one end thereof facing the second box 2, the third flange 131 is outwardly folded towards the accommodating cavity, one end of the third flange 131 is connected to one end of the first flange 121, and the other end of the third flange 131 is connected to the other end of the first flange 121, the fourth side wall 23 has a fourth flange 231 corresponding to the third flange 131, and the two ends of the fourth flange 231 are connected to the two ends of the second flange 221 respectively, wherein the box 10 further comprises a pressing strip 4, and the pressing strip 4 is arranged on the side of the second flange 221 away from the first flange 121, and / or the pressing strip 4 is arranged on the side of the fourth flange 231 away from the third flange 131.

[0126] Exemplarily, the side of the second flange 221 away from the first flange 121 is provided with a pressing strip 4, and the side of the second flange 221 away from the first flange 121 is provided with a pressing strip 4. The two pressing strips 4 can be connected to each other or separated from each other, which is not limited in the present application.

[0127] Exemplarily, the side of the second flange 221 away from the first flange 121 is provided with a pressing strip 4, and the side of the second flange 221 away from the first flange 121 is not provided with a pressing strip 4.

[0128] Exemplarily, the side of the second flange 221 away from the first flange 121 is not provided with the pressing strip 4, and the side of the second flange 221 away from the first flange 121 is provided with the pressing strip 4.

[0129] In the above examples, the pressing strip 4 can improve the structural strength of the flange (the flange is any one of the first flange 121, the second flange 221, the third flange 131 and the fourth flange 231), avoid deformation of the flange, and improve the fastening effect between the two flanges fixedly connected by improving the structural strength of the flange, thereby improving the reliability of the sealing between the two flanges and preventing moisture, dust and other impurities from entering the inside of the box body 10.

[0130] In some embodiments of the present application, referring to Figure 3 and Figure 5 , the plurality of pressing strips 4 includes a first pressing strip 41, the first pressing strip 41 extending from the first section 311 to a position corresponding to the third flange 131 through the second section 312; and / or the plurality of pressing strips 4 includes a second pressing strip 42, the second pressing strip 42 extending from the first section 311 to a position corresponding to the third flange 131 through the third section 313.

[0131] In the above examples, the first pressing strip 41 and the second pressing strip 42 can better improve the fastening effect between the two flanges fixedly connected, thereby improving the reliability of the sealing between the two flanges and preventing moisture, dust and other impurities from entering the inside of the box body 10.

[0132] In some embodiments of the present application, the plurality of pressing strips 4 includes a first pressing strip 41, a second pressing strip 42 and a third pressing strip 43, the third pressing strip 43 corresponding to the position of the third flange 131, and the first pressing strip 41, the second pressing strip 42 and the third pressing strip 43 are spaced apart.

[0133] In the above examples, by providing the first pressing strip 41, the second pressing strip 42 and the third pressing strip 43, the reliability of the connection between the first box body 1 and the second box body 2 can be better improved, and the first pressing strip 41, the second pressing strip 42 and the third pressing strip 43 are spaced apart, so that the adjacent two are not easy to interfere.

[0134] Exemplarily, the first pressing strip 41 and the second pressing strip 42 have the same length.

[0135] Exemplarily, the first pressing strip 41 and the second pressing strip 42 have the same length, and the length of the first pressing strip 41 and the second pressing strip 42 is less than the length of the third pressing strip 43.

[0136] Exemplarily, the first pressing strip 41 and the second pressing strip 42 can be fixedly connected to the side of the flange by welding.

[0137] Exemplarily, the flange is provided with a fixing hole 1212, and the pressing strip 4 can also be provided with a fixing hole 1212, so that the fixing hole 1212 on the pressing strip 4 and the fixing hole 1212 on the flange can be respectively penetrated by a fastener, thereby achieving detachable connection of the flange and the pressing strip 4. In addition, since the fixing hole 1212 is arranged on the positioning protrusion 1211, the positioning protrusion 1211 is not easy to deform relative to the flange plate when penetrated by the fastener, which can improve the reliability of the fixed connection of the flange and the pressing strip 4. Moreover, since the fixing hole 1212 is arranged on the positioning protrusion 1211, the arrangement of the hole on the flange can also be reduced, that is, the structural characteristics and distribution position of the positioning protrusion 1211 are reasonably utilized.

[0138] In some embodiments of the present application, with reference to Figure 3 and Figure 5 , the first cabinet 1 has a plurality of mounting portions 5 on the edges on both sides of the second direction Y, the plurality of mounting portions 5 are arranged at intervals along the first direction X, and the cabinet 10 is fixed on the electrical device through the mounting portion 5.

[0139] Exemplarily, the first direction X can refer to the length direction of the cabinet 10, and the second direction Y can refer to the width direction of the cabinet 10.

[0140] In the above example, the cabinet 10 can be mounted on the electrical device through the plurality of mounting portions 5. Compared with the mounting beam arranged on both sides of the width direction of the cabinet 10 in the related art, the plurality of mounting portions 5 can replace the mounting beam extending along the first direction X, so as to reduce the weight of the cabinet 10, facilitate lightweight setting, and thus, in combination with the thinning setting of the thickness of the cabinet 10, the cabinet 10 can effectively have the characteristics of being light and thin.

[0141] In some embodiments of the present application, with reference to Figure 6 and Figure 7 , Figure 6 is another angle structural schematic view of the first cabinet of some embodiments of the present application. Figure 7 is a partial sectional view of the first cabinet at the mounting portion of some embodiments of the present application. The first cabinet 1 has a bottom cross beam 71 and a bottom longitudinal beam 72, and the bottom cross beam 71 and / or the bottom longitudinal beam 72 are connected with the mounting portion 5.

[0142] Exemplarily, the mounting portion 5 is connected with the bottom cross beam 71.

[0143] Exemplarily, the mounting portion 5 is connected with the bottom longitudinal beam 72.

[0144] Exemplarily, the mounting portion 5 is connected with the bottom transverse beam 71 and the bottom longitudinal beam 72.

[0145] In the above example, by connecting the mounting portion 5 with the bottom transverse beam 71 and the bottom longitudinal beam 72, the structural strength of the mounting portion 5 can be effectively improved, so that the cabinet 10 can be fixed on the electrical device through the mounting portion 5.

[0146] In some embodiments of the present application, referring to Figure 6 and Figure 7 , the mounting portion 5 comprises a first layer plate 51 and a second layer plate 52, the first layer plate 51 is connected with the bottom transverse beam 71, the second layer plate 52 is connected with the bottom longitudinal beam 72, at least part of the first layer plate 51 and the second layer plate 52 are spaced apart along the third direction Z, the first layer plate 51 and the second layer plate 52 are respectively provided with opposite first mounting holes and second mounting holes, and the mounting sleeve 53 is arranged in the second mounting hole and abuts against the surface of the first layer plate 51 facing the second layer plate 52.

[0147] In the above example, by connecting the first layer plate 51 with the bottom transverse beam 71 and the second layer plate 52 with the bottom longitudinal beam 72, the structural strength of the mounting portion 5 can be better improved; by spacing at least part of the first layer plate 51 and the second layer plate 52 along the third direction Z, a certain deformation space can be provided for the first layer plate 51 and the second layer plate 52, which can reduce the deformation ability of the mounting portion 5 when subjected to the impact force and other forces, and the mounting portion 5 with deformation ability will not directly break when subjected to the impact force and other forces, thereby the mounting portion 5 of the present application has better reliability.

[0148] Further, in the up-down direction, the first layer plate 51 is located on the lower side of the second layer plate 52, by arranging the mounting sleeve 53 in the second mounting hole and abutting against the surface of the first layer plate 51 facing the second layer plate 52, the cabinet 10 can be installed on the electrical device through the mounting sleeve 53.

[0149] In some embodiments of the present application, referring to Figure 6 and Figure 7 , the bottom transverse beam 71 and the first layer plate 51 are integrally formed, and / or the bottom longitudinal beam 72 and the second layer plate 52 are integrally formed.

[0150] Exemplarily, the bottom transverse beam 71 and the first layer plate 51 are integrally formed.

[0151] Exemplarily, the bottom longitudinal beam 72 and the second layer plate 52 are integrally formed.

[0152] Exemplarily, the bottom transverse beam 71 and the first layer plate 51 are integrally formed, and the bottom longitudinal beam 72 and the second layer plate 52 are integrally formed.

[0153] In the above example, the first layer plate 51 can be configured to extend outwardly from the bottom cross beam 71, and the second layer plate 52 can be configured to extend outwardly from the bottom longitudinal beam 72, so that the first layer plate 51 and the second layer plate 52 have better structural strength, and the mounting portion 5 has better reliability.

[0154] In some embodiments of the present application, with reference to Figure 6 and Figure 7 In the third direction Z, the first layer plate 51 is located between the second layer plate 52 and the bottom wall 11, and the distance D between the lower surface of the first layer plate 51 and the lower surface of the bottom wall 11 satisfies: D>D1+D2, where D1 is the thickness of the bracket plate 54, and D2 is the thickness of the nut 55 mounted on the bracket plate 54.

[0155] That is, the hoisting bolt can pass through the mounting sleeve 53 from top to bottom, and the lower end of the hoisting bolt is exposed from the mounting sleeve 53 and the lower surface of the first layer plate 51, at this time, the bracket plate 54 is arranged between the nut 55 and the lower surface of the first layer plate 51 by fastening the nut 55, so that in the above example, the condition D>D1+D2 is satisfied, and the bracket plate 54 and the nut 55 are not exposed downwardly from the lower surface of the bottom wall 11, so that when the battery device 100 is assembled, the hoisting bolt, the bracket plate 54 and the nut 55 are not easy to interfere with the external structure.

[0156] In some embodiments of the present application, in the third direction Z, the thickness H of the box body 10 satisfies: 20mm≤H≤50mm.

[0157] In the above example, satisfying the above condition can make the battery device 100 have a thinner thickness, which is beneficial to the assembly of the battery device 100, and also optimizes the position arrangement of the battery device 100.

[0158] In some embodiments of the present application, with reference to Figure 3 , Figure 5 and Figure 6 The first side wall 12 has a first assembly hole 61, a second assembly hole 62 and a third assembly hole 63, and in the second direction Y, the third assembly hole 63 is located between the first assembly hole 61 and the second assembly hole 62, the high-voltage connector 64 is mounted at the first assembly hole 61, the low-voltage connector 65 is mounted at the second assembly hole 62, and the heat exchange connector 66 is mounted at the third assembly hole 63.

[0159] In the above example, the position arrangement of the high-voltage connector 64, the low-voltage connector 65 and the heat exchange connector 66 can be better achieved.

[0160] In some embodiments of the present application, with reference to Figure 3The plurality of battery cell assemblies 20 are arranged in sequence along a first direction X, and each battery cell assembly 20 comprises a plurality of battery cells 201 arranged in layers along a second direction Y, the second direction Y being a thickness direction of the battery cells 201 and intersecting the first direction X.

[0161] For example, the first direction X is a length direction of the box 10, the second direction Y is a width direction of the box 10, and the third direction Z is a height direction of the box 10. The battery cells 201 can be arranged along the width direction of the box 10, i.e., the battery cells 201 can be arranged in a horizontal manner, which can facilitate optimization of the arrangement of the battery cells 201.

[0162] In the above example, the arrangement of the battery cells 201 can better utilize the space of the accommodating cavity and optimize the arrangement of the battery cells 201.

[0163] The application also provides a power consumption device having the battery device 100 of the above embodiment.

[0164] According to the power consumption device of the application, the battery device 100 of the above embodiment is provided, the cost of the battery device 100 is reduced, the cost of the power consumption device is reduced, and the thinned battery device 100 can optimize the arrangement of the components of the power consumption device.

[0165] In some embodiments of the application, the power consumption device is a vehicle 1000, and the plurality of battery cell assemblies 20 are arranged in sequence along a first direction X, the first direction X being a front-rear direction of the vehicle 1000.

[0166] In the above example, the battery device 100 can be arranged at the bottom of the vehicle 1000, and the space at the bottom of the vehicle 1000 can be better optimized.

[0167] Other configurations and operations of the battery device 100 and the power consumption device according to the embodiments of the application are known to those skilled in the art and will not be described in detail here.

[0168] In the description of the present specification, the description of the terms "some embodiments", "optionally", "further", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0169] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device (100), characterized in that: include: The box body (10) comprises a first box body (1) and a second box body (2), wherein the first box body (1) and the second box body (2) are covered to form a receiving cavity inside; A battery cell assembly (20) is disposed in the accommodating cavity; An electrical component is arranged in the accommodating cavity to be connected to the battery cell assembly (20), wherein: The first box body (1) comprises a bottom wall (11), a first side wall (12) and a second side wall (13); the first side wall (12) and the second side wall (13) are arranged around the circumference of the bottom wall (11); the height of the first side wall (12) is greater than the height of the second side wall (13); The second box body (2) comprises a top wall (21), a third side wall (22) and a fourth side wall (23); the third side wall (22) and the fourth side wall (23) are arranged around the circumference of the top wall (21); the height of the third side wall (22) is smaller than the height of the fourth side wall (23); When the first box body (1) and the second box body (2) are covered, the top wall (21) and the bottom wall (11) are spaced apart in the height direction, the first side wall (12) and the third side wall (22) are cooperatively connected, the second side wall (13) and the fourth side wall (23) are cooperatively connected, and the first side wall (12) is used to install and fix the electrical components.

2. The battery device (100) according to claim 1, characterized in that The first side wall (12) and the bottom wall (11) are integrally stamped metal parts.

3. The battery device (100) according to claim 1, characterized in that The first side wall (12) has a first flange (121) at one end facing the second box body (2), and the first flange (121) is folded outward from the accommodating cavity. The third side wall (22) is provided with a second flange (221) corresponding to the first flange (121).

4. The battery device (100) according to claim 3, characterized in that The first flange (121) is provided with a first positioning portion, and the second flange (221) is provided with a second positioning portion that is positioned and matched with the first positioning portion.

5. The battery device (100) according to claim 4, characterized in that The first positioning portion includes a positioning protrusion (1211), and the second positioning portion includes a positioning hole (2211), and the positioning protrusion (1211) is positioned and fitted in the positioning hole (2211).

6. The battery device (100) according to claim 5, characterized in that At least one of the positioning protrusions (1211) is provided with a fixing hole (1212) penetrating the first flange (121).

7. The battery device (100) according to claim 3, characterized in that The first flange (121) includes a first section (311) and a second section (312) and a third section (313) connected at both ends of the first section (311), wherein the first section (311) is parallel to the bottom wall (11) and spaced apart from the bottom wall (11) in the height direction, and an end of the second section (312) away from the first section (311) and an end of the third section (313) away from the first section (311) both extend obliquely toward the bottom wall (11).

8. The battery device (100) according to claim 7, characterized in that A plurality of fixing holes (1212) are provided on the first section (311), the second section (312) and the third section (313), and a distance L1 between two adjacent fixing holes (1212) on the first section (311), a distance L2 between two adjacent fixing holes (1212) on the second section (312), and a distance L3 between two adjacent fixing holes (1212) on the third section (313) satisfy the following conditions: L1>L2, L1>L3.

9. The battery device (100) according to claim 7, characterized in that The first segment (311) and the second segment (312) are transitioned by a first arc segment (314), and the arc angle R1 of the first arc segment (314) satisfies: 0°<R1≤60°; and / or, The first section (311) and the third section (313) are transitioned via a second arc section (315), and the arc angle R2 of the second arc section (315) satisfies the following: 0°<R2≤60°.

10. The battery device (100) according to claim 7, characterized in that The angle a1 between the first section (311) and the second section (312) satisfies: 135≤a1<180°; and / or, The included angle a2 between the first section (311) and the third section (313) satisfies: 135≤a1<180°.

11. The battery device (100) according to claim 7, characterized in that The second section (312) and the third section (313) are symmetrically arranged at both ends of the first section (311).

12. The battery device (100) according to claim 3, characterized in that The box body (10) further comprises a pressure strip (4), wherein the pressure strip (4) is arranged on the side of the second flange (221) facing away from the first flange (121).

13. The battery device (100) according to claim 3, characterized in that The second side wall (13) has a third flange (131) at one end facing the second box body (2), and the third flange (131) is folded outward from the accommodating cavity, one end of the third flange (131) is connected to one end of the first flange (121), and the other end of the third flange (131) is connected to the other end of the first flange (121), and the fourth side wall (23) has a fourth flange (231) corresponding to the third flange (131), and the two ends of the fourth flange (231) are respectively connected to the two ends of the second flange (221), wherein the box body (10) further includes a pressure strip (4), The pressure strip (4) is arranged on the side of the second flange (221) facing away from the first flange (121), and / or, The pressure strip (4) is arranged on the side of the fourth flange (231) facing away from the third flange (131).

14. The battery device (100) according to claim 13, characterized in that The pressure strip (4) has a plurality of sections, and the first flange (121) includes a first section (311) and a second section (312) and a third section (313) connected to both ends of the first section (311) in the second direction (Y), wherein the first section (311) is parallel to the first box (1), and the second section (312) and the third section (313) are both connected between the first section (311) and the first box (1), wherein, The plurality of beading strips (4) include a first beading strip (41), wherein the first beading strip (41) extends from the first section (311) through the second section (312) to a position corresponding to the third flange (131); and / or, The plurality of pressure strips (4) include a second pressure strip (42), and the second pressure strip (42) extends from the first section (311) through the third section (313) to a position corresponding to the third flange (131).

15. The battery device (100) according to claim 14, characterized in that The plurality of pressure strips (4) include the first pressure strip (41), the second pressure strip (42) and the third pressure strip (43), wherein the third pressure strip (43) corresponds to the position of the third flange (131), and the first pressure strip (41), the second pressure strip (42) and the third pressure strip (43) are all spaced apart.

16. The battery device (100) according to claim 1, characterized in that The edges of the first box body (1) on both sides in the second direction (Y) are provided with a plurality of mounting portions (5), the plurality of mounting portions (5) are spaced apart along the first direction (X), and the box body (10) is fixed to the electrical device via the mounting portions (5).

17. The battery device (100) according to claim 16, characterized in that The first box body (1) is provided with a bottom cross beam (71) and a bottom longitudinal beam (72), and the bottom cross beam (71) and / or the bottom longitudinal beam (72) are connected to the mounting portion (5).

18. The battery device (100) according to claim 17, characterized in that The mounting portion (5) comprises a first layer plate (51) and a second layer plate (52), wherein the first layer plate (51) is connected to the bottom cross beam (71), and the second layer plate (52) is connected to the bottom longitudinal beam (72), and at least parts of the first layer plate (51) and the second layer plate (52) are spaced apart along a third direction (Z), and the first layer plate (51) and the second layer plate (52) are respectively provided with a first mounting hole and a second mounting hole opposite to each other, and a mounting sleeve is passed through the second mounting hole and abuts against a surface of the first layer plate (51) facing the second layer plate (52).

19. The battery device (100) according to claim 18, characterized in that The bottom cross beam (71) and the first layer plate (51) are integrally formed parts, and / or the bottom longitudinal beam (72) and the second layer plate (52) are integrally formed parts.

20. The battery device (100) according to claim 18, characterized in that In the third direction (Z), the first layer plate (51) is located between the second layer plate (52) and the bottom wall, and the distance D between the lower surface of the first layer plate (51) and the lower surface of the bottom wall satisfies: D>D1+D2, wherein D1 is the thickness of the bracket plate (54), and D2 is the thickness of the nut (55) installed on the bracket plate (54).

21. The battery device (100) according to claim 1, characterized in that In the third direction (Z), the thickness H of the box (10) satisfies: 20 mm ≤ H ≤ 50 mm.

22. The battery device (100) according to claim 1, characterized in that The first side wall (12) is provided with a first assembly hole (61), a second assembly hole (62) and a third assembly hole (63); in the second direction (Y), the third assembly hole (63) is located between the first assembly hole (61) and the second assembly hole (62); a high-pressure connector (64) is installed at the first assembly hole (61), a low-pressure connector (65) is installed at the second assembly hole (62), and a heat exchange connector (66) is installed at the third assembly hole (63).

23. The battery device (100) according to claim 1, characterized in that A plurality of battery cell assemblies (20) are provided, and the plurality of battery cell assemblies (20) are arranged in sequence along a first direction (X). Each battery cell assembly (20) includes a plurality of battery cells (201) stacked and arranged along a second direction (Y). The second direction (Y) is the thickness direction of the battery cells (201) and intersects with the first direction (X).

24. An electrical device, characterized in that: include The battery device (100) according to any one of claims 1 to 23.

25. The electrical device according to claim 24, characterized in that: The power-consuming device is a vehicle (1000), a plurality of battery cell assemblies (20) are provided, and the plurality of battery cell assemblies (20) are arranged in sequence along a first direction (X), wherein the first direction (X) is a front-rear direction of the vehicle (1000).

Images