Battery box body, battery and electric device

Abstract

The invention provides a battery box body, a battery and a power utilization device, and belongs to the field of batteries. The battery box body comprises a lower box body and an upper cover, the lower box body is provided with a containing cavity with an opening in one end, the containing cavity is used for containing the battery module, and the upper cover is used for covering the opening of the lower box body. The battery box body further comprises a plurality of seat mounting structures, and the plurality of seat mounting structures are positioned on the upper cover.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery box, a battery and an electric device. Background Art

[0002] Currently, with the development of the electric vehicle industry, electric vehicles have become one of the important means of transportation for people to get around, and people's requirements for the performance of electric vehicles are also getting higher and higher.

[0003] In the related art, the seat of an electric vehicle is fixed to the vehicle body beam through an installation structure, and the installation structure is complex, occupying a relatively large amount of internal space of the whole vehicle and reducing the user experience. Summary of the Invention

[0004] The present application aims to at least solve one of the technical problems existing in the background art. To this end, an object of the present application is to provide a battery box, a battery and an electric device to alleviate, reduce or eliminate the problems in the related art.

[0005] An embodiment of the first aspect of the present application provides a battery box, including a lower box body and an upper cover. The lower box body has a receiving cavity with one end open, and the receiving cavity is used to accommodate a battery module. The upper cover is used to cover the opening of the lower box body. The battery box further includes: a plurality of seat mounting structures located on the upper cover.

[0006] In the technical solution of the embodiment of the present application, the seat mounting structure is integrated on the upper cover of the battery box, which simplifies the mounting structure required for the whole vehicle, increases the usable space inside the vehicle, and improves the user experience.

[0007] In some embodiments, the upper cover includes an upper cover body, the upper cover body has an outer surface and an inner surface opposite to the outer surface, and at least one of the outer surface and the inner surface of the upper cover body is provided with a reinforcing bracket; the positions of the plurality of seat mounting structures correspond to the reinforcing brackets. By correspondingly arranging the reinforcing brackets at the positions of the seat mounting structures, the structural strength of the upper cover is increased, and the stability of seat mounting is improved.

[0008] In some embodiments, the plurality of seat mounting structures include a first seat mounting structure and / or a second seat mounting structure. Among them, the first seat mounting structure is fixedly connected to the upper cover and corresponds to the position of the battery module, and the second seat mounting structure is fixedly connected to the lower box body and is staggered from the position of the battery module. The seat mounting structures are distinguished according to their corresponding positions with the battery module and are fixed to the battery box using different connection methods, which can improve the structural strength while making full use of the structure and internal space of the battery box itself, and improve the integration and the stability of seat mounting.

[0009] In some embodiments, the first seat mounting structure is sealingly connected to the upper cover body. Thus, fixing the first seat mounting structure on the upper cover will not affect the sealing performance of the battery box body.

[0010] In some embodiments, the first seat mounting structure is welded to the upper cover body and the sealing connection is achieved by welding. Using the welding fixing method can achieve the sealing connection simultaneously, with a simple structure, which is convenient for installation and processing production.

[0011] In some embodiments, when a first reinforcing bracket is provided on the outer surface of the upper cover body, the first reinforcing bracket has a first mounting hole to expose the first seat mounting structure, and the first seat mounting structure is welded to the first reinforcing bracket. Welding the first reinforcing bracket and the first seat mounting structure realizes the sealing and improves the bearing strength of the upper cover for the seat.

[0012] In some embodiments, when a second reinforcing bracket is provided on the inner surface of the upper cover body, the first seat mounting structure is welded to the second reinforcing bracket. Welding the second reinforcing bracket and the first seat mounting structure realizes the sealing and improves the bearing strength of the upper cover for the seat.

[0013] In some embodiments, the first seat mounting structure is a nut or a bolt. Using a nut or a bolt as the first seat mounting structure has a simple structure and reduces the production cost.

[0014] In some embodiments, the battery box body further includes a connecting structure, and the second seat mounting structure is fixedly connected to the lower box body through the connecting structure. The second seat mounting structure is installed on the lower box body through the connecting structure, which simplifies the mounting structure, improves the bearing strength for the seat, and enhances the stability of the seat mounting structure.

[0015] In some embodiments, at least one box beam is provided in the lower box body, the second seat mounting structure corresponds to the position of the box beam, and the second seat mounting structure is fixedly connected to the box beam through the connecting structure. Fixing the second seat mounting structure to the box beam can disperse the force of the seat mounting point to the overall structure of the lower box body, improving the bearing strength for the seat.

[0016] In some embodiments, the box beam has a hollow cavity, a second mounting hole communicating with the hollow cavity is provided on the box beam, one end of the connecting structure penetrates through the second mounting hole and is fixedly connected to the box beam inside the box beam, and the other end of the connecting structure is fixedly connected to the second seat mounting structure. By opening a hole in the box beam to insert one end of the connecting structure into the box beam, the stability of the seat mounting structure fixed on the box beam can be improved, and the mounting structure is simplified while increasing the mounting strength.

[0017] In some embodiments, the other end of the connection structure is configured to be hermetically connected to the upper cover body. The connection structure is hermetically connected to the upper cover body, thus not affecting the sealing performance of the battery box body.

[0018] In some embodiments, the end face of the other end of the connection structure has a sealing groove, and a sealing ring is arranged in the sealing groove. The end face of the other end of the connection structure is configured to be in contact with the inner surface of the upper cover body, and when the other end of the connection structure is fixedly connected to the second seat mounting structure, the sealing ring is in a compressed state. By arranging a sealing ring between the connection structure and the upper cover body and the sealing ring being in a compressed state when the second seat mounting structure is fixedly connected to the connection structure, the sealing performance of the battery box body is realized. This sealing method has a simple structure and is convenient for installation.

[0019] In some embodiments, when the other end of the connection structure is fixedly connected to the second seat mounting structure, the compression amount of the sealing ring is between 15% and 30%. When the connection structure and the second seat mounting structure are in a connected state, the sealing ring having a certain compression amount can improve the sealing effect and ensure the sealing performance of the battery box body.

[0020] In some embodiments, the end face of the other end of the connection structure has a threaded hole for installing the second seat mounting structure, and the threaded hole is a blind hole. Setting the threaded hole for installing the second seat mounting structure as a blind hole can achieve the sealing of the battery box body and reduce the risk of failures caused by impurities such as water vapor entering the battery box body.

[0021] In some embodiments, the lower box body includes a bottom plate opposite to the upper cover, and the second seat mounting structure is fixedly connected to the bottom plate through the connection structure, and the connection structure is staggered from the position of the battery module. The second seat mounting structure is fixedly connected to the bottom plate of the battery box body, which can disperse the force applied at the seat mounting point to the overall structure of the lower box body, improve the bearing strength of the seat, and further improve the stability of the seat mounting structure.

[0022] In some embodiments, at least one box beam is arranged in the lower box body, the second seat mounting structure corresponds to the position of the box beam, one end of the connection structure penetrates through the box beam and extends to the bottom plate and is fixedly connected to the bottom plate, the other end of the connection structure is fixedly connected to the second seat mounting structure, and the connection structure is fixedly connected to the box beam. Setting the second seat mounting structure corresponding to the position of the box beam and connecting it to the bottom plate through the connection structure can achieve the dispersion of the force applied at the seat mounting point to the box beam and the bottom plate, enhance the support strength of the seat mounting structure, and improve the stability of the seat mounting.

[0023] In some embodiments, the second seat mounting structure has a threaded structure for installing the seat. Using the threaded structure to install the seat has a simple structure and is convenient for installation and processing production.

[0024] In some embodiments, the reinforcement bracket is a sheet metal bracket, and the reinforcement bracket has at least one bending structure. Using a sheet metal bracket with a bending structure can improve the structural strength and reduce local stress concentration. At the same time, the sheet metal bracket is relatively thin and light, which can reduce the weight of the part.

[0025] In some embodiments, an installation cavity is formed between at least one bending structure and the upper cover body, and at least a part of the seat installation structure is located in the installation cavity. Since the sheet metal structure is usually thin, the installation cavity between the bending structure and the upper cover body can provide an installation position for the seat installation structure, improving the integration of the whole vehicle.

[0026] In some embodiments, the reinforcement bracket has at least one opening. Providing openings on the reinforcement bracket facilitates surface treatment of the reinforcement bracket with electrophoresis solution, optimizing the uniformity of electrophoresis, and at the same time can also reduce the weight of the reinforcement bracket.

[0027] In some embodiments, the reinforcement bracket is welded to the upper cover body to form a plurality of solder joints, and a convex structure is provided at a position of the reinforcement bracket close to the solder joints. Providing a convex structure at the solder joint position facilitates drainage, reduces the risk of corrosion caused by water accumulation at the welding point, and extends the service life of the reinforcement bracket.

[0028] In some embodiments, the reinforcement bracket is strip-shaped, and the reinforcement bracket extends from one side where one side edge of the upper cover body is located to the side where the opposite side edge is located. Connecting multiple seat installation structures to the same reinforcement bracket makes the stress on the reinforcement bracket uniform and extends its service life.

[0029] In some embodiments, a plurality of reinforcement brackets are provided on both the outer surface and the inner surface of the upper cover body, and the positions of the plurality of reinforcement brackets on the outer surface and the plurality of reinforcement brackets on the inner surface correspond one by one. Providing corresponding reinforcement brackets on the inner and outer surfaces of the upper cover body can further enhance the load-bearing strength of the upper cover.

[0030] In some embodiments, two reinforcement brackets corresponding in position on the outer surface and the inner surface have bending structures corresponding in position and opposite in bending direction. Setting the bending structures of the reinforcement brackets on the inner and outer surfaces to have opposite bending directions can provide installation points for the seat installation structure and improve the stability of the seat installation structure.

[0031] An embodiment of the second aspect of the present application provides a battery, which includes a battery box body and a battery module placed in the battery box body, and the battery box body adopts the battery box body in the above-mentioned embodiments.

[0032] An embodiment of the third aspect of the present application provides an electrical device, which includes the battery in the above-mentioned embodiments, and the battery is used to provide electrical energy.

[0033] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of this application more obvious and understandable, the specific embodiments of this application are specifically described below. Description of the Drawings

[0034] In the drawings, unless otherwise specified, the same reference numerals throughout the several views represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in accordance with this application and should not be regarded as limiting the scope of this application.

[0035] Figure 1 Structural schematic diagram of a vehicle for some embodiments of this application;

[0036] Figure 2 Exploded structural schematic diagram of a battery for some embodiments of this application;

[0037] Figure 3 Structural schematic diagram of a battery box for some embodiments of this application;

[0038] Figure 4A External structural schematic diagram of the upper cover of a battery box for some embodiments of this application;

[0039] Figure 4B Internal structural schematic diagram of the upper cover of a battery box for some embodiments of this application;

[0040] Figure 5A Structural schematic diagram of a reinforcing bracket for some embodiments of this application;

[0041] Figure 5B Side view structural schematic diagram of a reinforcing bracket for some embodiments of this application;

[0042] Figure 6 Cross-sectional schematic diagram of the mounting point above a battery module for some embodiments of this application;

[0043] Figure 7 Structural schematic diagram of a first seat mounting structure for some embodiments of this application;

[0044] Figure 8 Cross-sectional schematic diagram of the mounting point not above a battery module for some embodiments of this application;

[0045] Figure 9 Structural schematic diagram of the connection structure connected to the box beam for some embodiments of this application;

[0046] Figure 10 Structural schematic diagram of a connection structure for some embodiments of this application;

[0047] Figure 11 Structural schematic diagram of the second seat mounting structure according to some embodiments of the present application;

[0048] Figure 12 Structural schematic diagram of the sealing ring according to some embodiments of the present application.

[0049] Description of reference numerals:

[0050] Vehicle 1000;

[0051] Battery 100, controller 200, motor 300;

[0052] Battery box 10, battery module 20, upper cover 11, lower box body 12;

[0053] Reinforcing bracket 111, first reinforcing bracket 1111, second reinforcing bracket 1112, bending structure 1113, opening 1114, protruding structure 1115;

[0054] First seat mounting structure 1121, second seat mounting structure 1122;

[0055] First mounting hole 113, connecting structure 114, box beam 115, welding hole 1151, second mounting hole 116, sealing ring 117, threaded hole 118, threaded structure 119 for installing the seat, installation cavity 120. Detailed implementation manners

[0056] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0058] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0059] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0060] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0061] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0062] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0063] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0064] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0065] With the development of the electric vehicle industry, people's requirements for the performance of electric vehicles are also getting higher and higher. To improve the comprehensive performance of electric vehicles and achieve vehicle lightweighting, higher requirements are put forward for the body-battery integration technology.

[0066] In related technologies, the seat of an electric vehicle is fixed to the vehicle body beam through a mounting structure. The mounting structure is complex, occupies a relatively large amount of the interior space of the whole vehicle, and reduces the user experience. In some embodiments, the seat mounting structure in an electric vehicle includes two cross beams. The first end of each cross beam is mounted on the middle channel of the vehicle, and the second end is mounted on the sill beam of the vehicle. Such a structure is relatively complex and large in size, occupying a relatively large amount of the interior space of the whole vehicle. At the same time, its processing cycle is long and the weight of the parts is heavy, resulting in an increase in the overall vehicle mass, which is not conducive to energy conservation and environmental protection.

[0067] Based on the above considerations, this application designs a battery box body, which integrates the seat mounting structure with the battery box body, can simplify the mounting structure, is small in size, reduces the occupied interior space of the whole vehicle, and improves the user experience. In addition, the battery box body provides bearing capacity for the seat, can increase the strength of the seat mounting structure, improve its stability, and can extend the service life of the seat mounting structure.

[0068] The battery box body disclosed in the embodiments of this application can be but is not limited to being used in power-consuming devices such as vehicles, ships or aircraft. A power supply system of the power-consuming device can be formed by using the battery box body, battery, etc. disclosed in this application. In this way, the seat mounting structure is simplified, the strength of the mounting structure is increased, and the service life of the seat mounting structure is extended.

[0069] The embodiments of this application provide a power-consuming device using a battery as a power source. The power-consuming device can be but is not limited to an electric vehicle, a ship, a spacecraft, etc. Among them, the spacecraft can include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0070] For the convenience of description in the following embodiments, a power-consuming device in an embodiment of this application, a vehicle 1000, is taken as an example for description.

[0071] Please refer to Figure 1 , Figure 1Schematic diagram of the structure of vehicle 1000 provided by some embodiments of the present application. Vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery 100 is disposed inside vehicle 1000. The battery 100 can be disposed at the bottom, the head, or the tail of vehicle 1000. The battery 100 can be used to supply power to vehicle 1000. For example, the battery 100 can serve as the operating power source of vehicle 1000. Vehicle 1000 can also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation, and driving of vehicle 1000.

[0072] In some embodiments of the present application, the battery 100 can not only serve as the operating power source of vehicle 1000, but also serve as the driving power source of vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for vehicle 1000.

[0073] Please refer to Figure 2 , Figure 2 Explosion diagram of the battery 100 provided by some embodiments of the present application. The battery 100 includes a battery box body 10 and a battery module 20. The battery module 20 is accommodated in the battery box body 10. Among them, the battery box body 10 is used to provide an accommodation space for the battery module 20. The battery box body 10 can adopt various structures, such as a cylinder, a cuboid, etc.

[0074] In the battery 100, multiple battery cells can be connected in series, in parallel, or in a series-parallel combination. A series-parallel combination means that there are both series and parallel connections among multiple battery cells. Multiple battery cells can be directly connected in series, in parallel, or in a series-parallel combination together, and then the whole formed by multiple battery cells is accommodated in the battery box body 10. Of course, the battery 100 can also be that multiple battery cells are first connected in series, in parallel, or in a series-parallel combination to form a battery module 20, and multiple battery modules 20 are then connected in series, in parallel, or in a series-parallel combination to form a whole and are accommodated in the battery box body 10. The battery 100 can also include other structures. For example, the battery 100 can also include a busbar component for realizing the electrical connection among multiple battery cells.

[0075] Among them, each battery cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0076] Some embodiments of the present application provide a battery box body 10, including a lower box body 12 and an upper cover 11. The lower box body 12 has a receiving cavity with one end open. The receiving cavity is used to accommodate the battery module 20. The upper cover 11 is used to cover the opening of the lower box body 12. The battery box body 10 further includes:

[0077] Multiple seat mounting structures are located on the upper cover 11.

[0078] As Figure 3 shown, the seat mounting structure is integrated with the battery box body 10. The seat mounting structure is located on the upper cover 11 of the battery box body 10.

[0079] The seat mounting structure is configured to fixedly mount the seat of the vehicle. By integrating the seat mounting structure on the battery box body, the battery box body can provide the bearing capacity of the seat.

[0080] The seat mounting structure can be directly fixed on the upper cover, or the seat mounting structure can be fixed on the lower box body 12 so that the seat mounting structure is located on the upper cover 11 and is fixed in position.

[0081] In some embodiments, the seat mounting structure can be integrated with the battery box body 10 in one piece, which can reduce the installation process in the production process, save labor costs, and improve the reliability of seat installation.

[0082] Integrating the seat mounting structure on the upper cover of the battery box body can simplify the installation structure, make it smaller in volume, reduce the occupied internal space of the whole vehicle, and improve the user experience. At the same time, the stressed part during the use of the seat is transmitted to the battery box body, increasing the strength of the seat mounting structure, enhancing its stability, and extending the service life of the seat mounting structure. In addition, integrating the seat mounting structure on the upper cover of the battery box body can supplement the structural strength of the left and right mounting beams of the whole vehicle. Under the condition that the force is allowed, it can appropriately replace part of the whole vehicle beam structure, thereby simplifying the whole vehicle mounting beam and reducing the weight of the whole vehicle.

[0083] According to some embodiments of the present application, the upper cover 11 includes an upper cover body. The upper cover body has an outer surface and an inner surface opposite to the outer surface. At least one of the outer surface and the inner surface of the upper cover body is provided with a reinforcing bracket 111; the positions of the multiple seat mounting structures correspond to the reinforcing brackets 111.

[0084] As Figure 4A and 4B shown, the upper cover body has an inner surface and an outer surface. The reinforcing bracket 111 can be separately provided on the inner surface or the outer surface. The reinforcing bracket 111 can use the exemplary structures as Figure 5A and 5B shown. In the Figure 4A and 4B shown examples, the reinforcing bracket 111 can also be provided on both the inner surface and the outer surface to further improve the installation structure strength. For the convenience of description and understanding, the reinforcing bracket provided on the outer surface of the upper cover body is defined as the first reinforcing bracket, and the reinforcing bracket provided on the inner surface of the upper cover body is defined as the second reinforcing bracket.

[0085] The seat mounting structure is fixed at the position where the strengthening bracket 111 is located. In some embodiments, the strengthening bracket can be, but is not limited to, bar-shaped, and multiple strengthening brackets can be distributed in parallel on the upper cover body or cross-distributed on the upper cover body.

[0086] The strengthening bracket 111 can be fixed to the upper cover body by means such as welding or threading.

[0087] By correspondingly arranging the strengthening bracket at the position of the seat mounting structure, the strengthening bracket can further provide bearing capacity, enhance the support strength of the upper cover, thereby increasing the strength of the mounting structure and improving the stability of seat installation.

[0088] According to some embodiments of the present application, multiple seat mounting structures include a first seat mounting structure 1121 and / or a second seat mounting structure 1122. Among them, the first seat mounting structure 1121 is fixedly connected to the upper cover 11, and the position of the first seat mounting structure 1121 corresponds to that of the battery module 20. The second seat mounting structure 1122 is fixedly connected to the lower box body 12, and the position of the second seat mounting structure 1122 is offset from that of the battery module 20.

[0089] Since multiple battery modules 20 are placed in the battery box body 10, the space for installing the seat mounting structure is relatively small at the position where the battery module 20 is located. In order to make full use of the space inside the battery box body 10 and increase the strength of the mounting structure at the same time, the seat mounting structure is divided into two categories according to the installation position of the seat mounting structure. Among them, the seat mounting structure with the fixed point at the position corresponding to the battery module 20 is the first seat mounting structure 1121, and the seat mounting structure with the fixed point offset from the position of the battery module 20 is the second seat mounting structure 1122. Different fixing methods are used for these two seat mounting structures.

[0090] For the first seat mounting structure 1121, since its installation space is small, it is fixedly connected to the upper cover 11 to save installation space. For the second seat mounting structure 1122, since its fixed point is offset from the position of the battery module 20 and there is a relatively large installation space, in order to enhance the strength of the mounting structure, the second seat mounting structure 1122 can be fixedly connected to the lower box body 12 through the connection structure 114.

[0091] Differentiating the seat mounting structure according to its corresponding position with the battery module and using different connection methods to fix it to the battery box body can make full use of the structure and internal space of the battery box body itself while improving the structural strength, and improve the integration degree and the stability of seat installation.

[0092] According to some embodiments of the present application, the first seat mounting structure 1121 is hermetically connected to the upper cover body.

[0093] As shown Figure 6 For the first seat mounting structure 1121, it can be sealed with the upper cover body, so as to reduce the entry of impurities such as water vapor into the battery box 10 and not affect the sealing performance of the battery box 10. The sealing connection method can be selected according to the usage scenario. For example, a sealed welding method, a method of setting a sealing ring at the connection, etc. can be used.

[0094] Sealingly connecting the first seat mounting structure to the upper cover body, so that fixing the first seat mounting structure on the upper cover will not affect the sealing performance of the battery box, reduce the influence of external impurities on the battery, and improve the reliability of the battery.

[0095] According to some embodiments of the present application, the first seat mounting structure 1121 is welded to the upper cover body and the sealing connection is achieved by welding.

[0096] For the first seat mounting structure 1121 at the corresponding position of the battery module 20, a welding method can be used to make it sealingly connected to the upper cover 11. In Figure 6 the example shown, the first seat mounting structure 1121 can be a nut, and the nut is fixed to the upper cover body by welding to achieve the sealing connection between the first seat mounting structure 1121 and the upper cover 11. In the subsequent production process, the seat can be bolted to the nut welded to the upper cover 11.

[0097] Using the welding fixing method to fix the first seat mounting structure on the upper cover body and achieving the sealing connection between the two by welding, the structure is simple and convenient for installation and processing production.

[0098] According to some embodiments of the present application, as Figure 6 shown, when the first reinforcing bracket 1111 is provided on the outer surface of the upper cover body, the first reinforcing bracket 1111 has a first mounting hole 113 to expose the first seat mounting structure 1121, and the first seat mounting structure 1121 is welded to the first reinforcing bracket 1111.

[0099] It can be understood that the first seat mounting structure can also be fixedly connected by other means. For example, when the thickness of the first reinforcing bracket meets the conditions, internal threads can be provided in the first mounting hole 113, and threads can be provided on the first seat mounting structure. Thus, the first seat mounting structure is threadedly connected to the first reinforcing bracket.

[0100] In some embodiments, the first seat mounting structure 1121 and the first reinforcing bracket 1111 are welded at the first mounting hole 113 and the sealing connection is achieved by welding, so as to ensure the sealing performance of the battery box

[0101] The first reinforcement bracket is welded to the first seat mounting structure, which improves the load-bearing strength of the upper cover and has a simple installation method, facilitating production.

[0102] According to some embodiments of the present application, as Figure 6 shown, when a second reinforcement bracket 1112 is provided on the inner surface of the upper cover body, the first seat mounting structure 1121 is welded to the second reinforcement bracket 1112.

[0103] In some embodiments, the lower end of the first seat mounting structure 1121 can penetrate through the corresponding through hole on the upper cover body to contact the upper surface of the second reinforcement bracket 1121, and the lower end surface of the first seat mounting structure 1121 is welded to the second reinforcement bracket 1121. In other embodiments, the lower end of the first seat mounting structure 1121 can also penetrate through the through hole on the second reinforcement bracket 1121, and the first seat mounting structure 1121 and the second reinforcement bracket 1112 are welded at the through hole, and the first seat mounting structure 1121 and the second reinforcement bracket 1112 can also be hermetically connected at the through hole by welding, thereby ensuring the sealing performance of the battery box body.

[0104] In Figure 6 the illustrated example, the first seat mounting structure 1121 is a nut, and a weight-reducing hole is provided on the upper end surface of the nut, so as to reduce the weight of the first seat mounting structure 1121, and the weight-reducing hole is set as a blind hole to avoid affecting the sealing performance of the battery box body.

[0105] Welding the second reinforcement bracket to the first seat mounting structure improves the load-bearing strength of the upper cover and has a simple installation method, facilitating production.

[0106] According to some embodiments of the present application, the first seat mounting structure 1121 is a nut or a bolt.

[0107] In some embodiments, as Figure 6 shown, the first seat mounting structure 1121 can adopt Figure 7 the illustrated nut. In Figure 6 the shown example, the nut can be fixed to the upper cover body by welding, and during the subsequent production process, the seat can be bolted to the nut welded to the upper cover 11.

[0108] Using a nut or a bolt as the first seat mounting structure has a simple structure and reduces the production cost.

[0109] According to some embodiments of the present application, the battery box body 10 further includes a connection structure 114, and the second seat mounting structure 1122 is fixedly connected to the lower box body 12 through the connection structure 114.

[0110] AsFigure 8 As shown, a connection structure 114 is provided in the battery box body 10. The connection structure 114 is located at a position in the lower box body 12 where the battery module 20 is not provided. The connection structure 114 can be selected according to the usage scenario. For example, structures such as sleeves and nuts can be used. The second seat mounting structure 1122 and the connection structure 114 are fixed to each other, and are fixedly connected to the lower box body 12 through the connection structure 114.

[0111] In some embodiments, the connection structure 114 can be fixedly connected to the lower box body 12. For example, it can be welded or pasted on the lower box body 12. Figure 9 In the example shown, the connection structure 114 is fixed on the wall of the lower box body 12. A welding hole 1151 is provided on the outer wall of the lower box body 12 corresponding to the connection structure 114. Through the welding hole 1151, the connection structure 114 can be welded to the lower box body 12 together, improving the reliability of seat installation.

[0112] The second seat mounting structure is mounted on the lower box body of the battery box body through the connection structure, simplifying the mounting structure, enhancing the bearing strength of the seat, and enhancing the stability of the seat mounting structure.

[0113] According to some embodiments of the present application, at least one box beam 115 is provided in the lower box body 12. The second seat mounting structure 1122 corresponds to the position of the box beam 115, and the second seat mounting structure 1122 is fixedly connected to the box beam 115 through the connection structure 114.

[0114] As Figure 8 shown, the battery box body 10 has a box beam 115 inside. The number and specific structure of the box beam 115 can be designed according to the usage scenario. For example, the box beam 115 can use a flat plate structure and is provided on the side wall of the lower box body 12. The connection structure 114 is provided at the position where the box beam 115 is located and is fixedly connected to the box beam 115. The second seat mounting structure 1122 and the connection structure 114 are fixed to each other, and are fixedly connected to the box beam 115 through the connection structure 114.

[0115] Fixing the second seat mounting structure to the box beam can disperse the force of the seat mounting point to the overall structure of the lower box body 12, enhancing the bearing strength of the seat.

[0116] According to some embodiments of the present application, the box beam 115 has a hollow cavity. A second mounting hole 116 communicating with the hollow cavity is provided on the box beam 115. One end of the connection structure 114 penetrates through the second mounting hole 116 and is located inside the box beam 115 and is fixedly connected to the box beam 115. The other end of the connection structure 114 is fixedly connected to the second seat mounting structure 1122.

[0117] As Figure 8As shown, a hollow cavity for the connecting structure 114 to pass through is provided on the box beam 115. To fix the connecting structure 114, a second mounting hole 116 is also provided on the box beam 115. One end of the connecting structure 114 passes through the second mounting hole 116 and can be restricted inside the box beam 115, reducing the risk of shaking and affecting the installation stability. At the other end of the connecting structure 114, the second seat mounting structure 1122 is fixedly connected thereto, thereby realizing the fixed connection between the second seat mounting structure 1122 and the box beam 115.

[0118] In one example, the connecting structure 114 is a sleeve, and the second seat mounting structure 1122 is nested and fixed on the connecting structure 114. The hollow sleeve structure can reduce the weight of the connecting structure, which is beneficial to achieving the goal of vehicle lightweighting. When the connecting structure 114 is a sleeve, the end of the connecting structure 114 located in the hollow cavity of the box beam 115 can be a closed end, that is, the connecting structure 114 is a sleeve with only one end open, so as to prevent impurities such as water vapor in the environment from entering the battery box 10 and not affecting the sealing performance of the battery box 10.

[0119] By opening a hole in the box beam to insert one end of the connecting structure into the box beam, the stability of the seat mounting structure fixed on the box beam can be improved, and the installation structure is simplified while the installation strength is enhanced.

[0120] According to some embodiments of the present application, the other end of the connecting structure 114 is configured to be hermetically connected to the upper cover body.

[0121] As Figure 8 shown, the connecting structure 114 is hermetically connected to the upper cover body, so as to reduce the entry of impurities such as water vapor into the battery box 10 and not affect the sealing performance of the battery box 10. The sealing connection method can be selected according to the use occasion. For example, a sealed welding method, a method of setting a sealing ring at the connection, etc. can be used.

[0122] Hermetically connecting the connecting structure to the upper cover body will not affect the sealing performance of the battery box, reduce the influence of external impurities on the battery, and improve the reliability of the battery.

[0123] According to some embodiments of the present application, the end face of the other end of the connecting structure 114 has a sealing groove, and a sealing ring 117 is arranged in the sealing groove. The end face of the other end of the connecting structure 114 is configured to be in contact with the inner surface of the upper cover body, and when the other end of the connecting structure 114 is fixedly connected to the second seat mounting structure 1122, the sealing ring 117 is in a compressed state.

[0124] As Figure 8As shown, a sealing groove is provided at the end face of the other end of the connection structure 114, so that the sealing ring 117 can be embedded in the sealing groove to prevent the sealing ring 117 from sliding relative to the connection structure 114 and affecting the sealing effect. The sealing ring 117 also contacts the inner surface of the upper cover body. When the second seat mounting structure 1122 is fixed to the connection structure 114, the upper cover 11 is clamped between the second seat mounting structure 1122 and the connection structure 114, and the sealing ring 117 will be squeezed. Due to the squeezing of the upper cover 11 on the sealing ring 117, the sealing ring 117 is in a compressed state, thereby improving the sealing effect.

[0125] By providing a sealing ring between the connection structure and the upper cover body, and the sealing ring is in a compressed state when the second seat mounting structure is fixedly connected to the connection structure, the sealing performance of the battery box is realized. This sealing method has a simple structure and is convenient for installation.

[0126] According to some embodiments of the present application, when the other end of the connection structure 114 is fixedly connected to the second seat mounting structure 1122, the compression amount of the sealing ring 117 is between 15% and 30%.

[0127] Features such as the shape and material of the sealing ring 117 can be selected according to the use occasion. In some embodiments, it can be selected according to the compression amount of the sealing ring 117 when the second seat mounting structure 1122 is fixedly connected to the connection structure 114. For example, a sealing ring with a compression amount between 15% and 30% can be selected.

[0128] When the connection structure and the second seat mounting structure are in a connected state, the sealing ring having a certain compression amount can improve the sealing effect and ensure the sealing performance of the battery box.

[0129] According to some embodiments of the present application, the end face of the other end of the connection structure 114 has a threaded hole 118 for installing the second seat mounting structure 1122, and the threaded hole 118 is a blind hole, that is, the connection structure 114 can be a sleeve structure with only one end open.

[0130] In Figure 8 the illustrated example, a threaded connection method can be used to realize the fixed connection between the connection structure 114 and the second seat mounting structure 1122. As Figure 10 shown, a threaded hole 118 is provided on the end face of the connection structure 114 for installing the second seat mounting structure 1122, and the second seat mounting structure 1122 can be threadedly installed on the connection structure 114.

[0131] In some embodiments, in order to improve the sealing effect, the threaded hole 118 can be set as a blind hole.

[0132] It can be understood that the second seat mounting structure 1122 can also be installed in other ways. For example, the end face of the other end of the connecting structure 114 and the shape of the second seat mounting structure 1122 can be set to fit each other, so that the second seat mounting structure 1122 can be snapped onto the connecting structure 114.

[0133] Setting the threaded hole for installing the second seat mounting structure as a blind hole can achieve the sealing of the battery box body and reduce the risk of failures caused by impurities such as water vapor entering the battery box body.

[0134] According to some embodiments of the present application, the lower box body 12 includes a bottom plate opposite to the upper cover 11. The second seat mounting structure 1122 is fixedly connected to the bottom plate through the connecting structure 114, and the position of the connecting structure 114 is staggered from that of the battery module 20.

[0135] Since the battery module 20 is placed inside the lower box body 12, the lower box body 12 is provided with a bottom plate to form a receiving cavity. The length of the connecting structure 114 can be set such that the end opposite to the second seat mounting structure 1122 can extend to be connected to the bottom plate of the battery box body 10. At this time, the connecting structure 114 and the bottom plate are fixed to each other. When the second seat mounting structure 1122 is fixed to the connecting structure 114, it can be fixedly connected to the bottom plate of the battery box body 10 through the connecting structure 114.

[0136] The second seat mounting structure is fixedly connected to the bottom plate of the battery box body, which can disperse the force applied to the seat mounting point to the overall structure of the lower box body, improve the bearing strength of the seat, and further enhance the stability of the seat mounting structure.

[0137] According to some embodiments of the present application, at least one box body beam 115 is provided inside the lower box body 12. The second seat mounting structure 1122 corresponds to the position of the box body beam 115. One end of the connecting structure 114 penetrates through the box body beam 115 and extends to the bottom plate and is fixedly connected to the bottom plate. The other end of the connecting structure 114 is fixedly connected to the second seat mounting structure 1122, and the connecting structure 114 is fixedly connected to the box body beam 115.

[0138] There is a box body beam 115 inside the battery box body 10. The connecting structure 114 is arranged at the position where the box body beam 115 is located, fixedly connected to the box body beam 115, and the end opposite to the second seat mounting structure 1122 extends to the bottom plate of the battery box body 10 and is fixedly connected to it. When the second seat mounting structure 1122 is connected to the connecting structure 114, it can be fixedly connected to both the box body beam 115 and the bottom plate through the connecting structure 114.

[0139] Align the second installed seat with the position of the box beam and connect it to the bottom plate through the connection structure, which can disperse the force on the seat mounting point to the box beam and the bottom plate, enhance the support strength of the seat mounting structure, and improve the stability of the seat installation.

[0140] According to some embodiments of the present application, the second seat mounting structure 1122 has a threaded structure 119 for mounting the seat.

[0141] As Figure 11 shown, a threaded structure 119 for mounting the seat is provided on the second seat mounting structure 1122. In subsequent production processes, the seat can be installed in the threaded structure on the second seat mounting structure 1122 through bolts and is threadedly connected to the second seat mounting structure 1122.

[0142] It can be understood that the seat can also be installed in other ways. For example, the seat can be welded to the second seat mounting structure 1122 to achieve the fixation of the seat.

[0143] Using the threaded structure to install the seat has a simple structure and is convenient for installation and processing production.

[0144] According to some embodiments of the present application, the strengthening bracket 111 is a sheet metal bracket, and the strengthening bracket 111 has at least one bending structure 1113.

[0145] As Figure 6 and Figure 8 shown, the structure of the strengthening bracket 111 can be set to have a bent part and is formed by sheet metal. The number of the bending structures 1113 and the shape of each bending structure 1113 can be designed according to different usage occasions.

[0146] In one example, the strengthening bracket 111 can be set in a "ji" shape, which is convenient for connecting with the upper cover 11 of the battery box 10, and at the same time, it can provide a space convenient for fixing the seat mounting structure after connection.

[0147] Using a sheet metal bracket with a bending structure can improve the structural strength and reduce local stress concentration. At the same time, the sheet metal bracket is relatively thin and light, which can reduce the weight of the part.

[0148] According to some embodiments of the present application, at least one bending structure 1113 and the upper cover body form an installation cavity 120, and at least a part of the seat mounting structure is located in the installation cavity 120.

[0149] When fixing the seat mounting structure, the sheet metal bracket itself may not be sufficient to provide an installation position. Since the sheet metal bracket is provided with a bending structure 1113, as Figure 6 and Figure 8As shown, when the reinforcing bracket 111 is fixed to the upper cover 11, the bent portion of the reinforcing bracket 111 and the upper cover body enclose an installation space, and the seat installation structure can be located or partially located in this installation space.

[0150] Since the sheet metal structure is usually thin, the installation cavity between the bent structure and the upper cover body can provide an installation position for the seat installation structure, improving the integration of the whole vehicle.

[0151] According to some embodiments of the present application, the reinforcing bracket 111 has at least one opening 1114.

[0152] As Figure 5A shown, openings 1114 are provided on the reinforcing bracket 111. By providing these openings, when surface treatment is performed on the reinforcing bracket 111, the electrophoresis liquid can pass through these openings and flow evenly on both sides of the reinforcing bracket 111, improving the treatment effect.

[0153] At the same time, these openings 1114 also reduce the weight of the reinforcing bracket 111.

[0154] The shape and position of the openings 1114 can be selected according to the usage scenario, and the present disclosure does not limit this.

[0155] Providing openings on the reinforcing bracket facilitates surface treatment of the reinforcing bracket using electrophoresis liquid, optimizing the uniformity of electrophoresis, and at the same time can also reduce the weight of the reinforcing bracket.

[0156] According to some embodiments of the present application, the reinforcing bracket 111 is welded to the upper cover body and forms a plurality of solder joints, and the position of the reinforcing bracket 111 near the solder joints has a convex structure 1115.

[0157] In some embodiments, the reinforcing bracket 111 is fixedly connected to the upper cover body by welding. At this time, a plurality of solder joints will be formed at the welding position. As Figure 5B shown, the reinforcing bracket 111 is provided with a convex structure 1115 near the solder joints.

[0158] The shape, quantity, and position of the convex structure 1115 can be selected according to the usage scenario, and the present disclosure does not limit this.

[0159] Providing a convex structure at the solder joint position facilitates drainage, reduces the risk of corrosion caused by water accumulation at the welding position, and extends the service life of the reinforcing bracket.

[0160] According to some embodiments of the present application, the reinforcing bracket 111 is strip-shaped, and the reinforcing bracket 111 extends from one side where one side edge of the upper cover body is located to the side where the opposite side edge is located.

[0161] As Figure 5A and 5BAs shown, the reinforcing bracket 111 is strip-shaped, so that it can be connected to multiple seat mounting structures and fix the multiple seat mounting structures on the upper cover body. Figure 5A and 5B In the illustrated example, a seat mounting structure can be provided at the position of each protrusion on the reinforcing bracket 111.

[0162] The length of the reinforcing bracket 111 can be set to extend from one side where one side edge of the upper cover body is located to the side where the opposite side edge is located. Thus, the space of the upper cover body can be fully utilized.

[0163] Connecting multiple seat mounting structures to the same reinforcing bracket makes the force on the reinforcing bracket uniform and extends its service life.

[0164] According to some embodiments of the present application, a plurality of reinforcing brackets 111 are provided on both the outer surface and the inner surface of the upper cover body, and the positions of the plurality of reinforcing brackets 111 on the outer surface correspond to those of the plurality of reinforcing brackets 111 on the inner surface one by one.

[0165] As Figure 6 and Figure 8 shown, reinforcing brackets 111 can be provided on the inner and outer surfaces of the upper cover body respectively. The reinforcing bracket 111 provided on the outer surface corresponds to the reinforcing bracket 111 provided on the inner surface in position. The upper cover body is clamped between the two reinforcing brackets 111, and both of the two reinforcing brackets are fixed on the upper cover body.

[0166] Providing corresponding reinforcing brackets on the inner and outer surfaces of the upper cover body can further improve the load-bearing strength of the upper cover.

[0167] According to some embodiments of the present application, the two reinforcing brackets 111 corresponding in position on the outer surface and the inner surface have bending structures 1113 that correspond in position and have opposite bending directions.

[0168] As Figure 6 and Figure 8 shown, the reinforcing bracket 111 provided on the outer surface corresponds to the reinforcing bracket 111 provided on the inner surface. The bending structures 1113 of the two reinforcing brackets 111 have opposite bending directions. At this time, an installation space for fixing the seat mounting structure can be formed.

[0169] Setting the bending structures of the reinforcing brackets on the inner and outer surfaces to have opposite bending directions can provide installation points for the seat mounting structure and improve the stability of the seat mounting structure.

[0170] An embodiment of the present application provides a battery 100, which includes a battery box body 10 and a battery module 20 placed in the battery box body 10. The battery box body adopts the battery box body 10 in the above embodiment.

[0171] The battery 100 may include the battery box body 10 in the above embodiments. For the sake of brevity, it will not be elaborated here. It should be understood that corresponding to the embodiments of the battery box body 10, the embodiments of the battery 100 may further include more modules.

[0172] An embodiment of the present application provides an electric device, which includes the battery in the above embodiments, and the battery is used to provide electric energy.

[0173] A specific embodiment of the present application will be described below. It should be understood that this specific embodiment is only described for the purpose of illustration and should not be construed as a limitation to the present application.

[0174] The battery box body 10 in an electric vehicle includes a lower box body 12 and an upper cover 11. The lower box body 12 includes a bottom plate opposite to the upper cover 11. The upper cover 11 includes a sheet metal upper cover body. On the inner surface and the outer surface of the upper cover body, a plurality of reinforcing brackets 111 are respectively provided. The positions of the reinforcing brackets 111 on the inner and outer surfaces correspond to each other one by one. Two reinforcing brackets 111 corresponding to each other on the inner and outer surfaces of the upper cover body are in a strip structure, extending from one side of the upper cover body to the opposite side and contacting the upper cover body. By fixing the reinforcing brackets 111 to the upper cover body, a coherent integral structure can be formed to evenly transfer and disperse the force of the seat fixing point. The reinforcing brackets 111 are strip-shaped sheet metal brackets, and each reinforcing bracket 111 has a bent structure 1113 formed by stamping and outer edges located on both sides of the bent structure 1113, and the outer edges are attached to the surface of the upper cover body. The reinforcing brackets and the upper cover body are welded at the outer edges of the reinforcing brackets to form a plurality of welding points. When the reinforcing brackets 111 are fixed to the sheet metal upper cover, an installation cavity 120 is formed between the bent structure 1113 and the upper cover 11. The reinforcing brackets 111, as a reinforcing structure, can supplement the structural strength of the seat installation beam. Under the condition that the force is allowed, part of the vehicle body beam structure can be appropriately replaced, so as to simplify the vehicle body installation beam and reduce the vehicle weight. The stamping structure of the reinforcing brackets 111 itself can reduce local stress concentration and increase the rigidity of the brackets. An opening 1114 is provided on the reinforcing brackets 111 as a weight reduction hole and a drainage groove, so as to achieve lightweight while making the electrophoresis liquid evenly cover the surface of the reinforcing brackets 111. A convex structure 1115 is also provided on the reinforcing brackets 111 near the welding points, reducing the risk of corrosion of fasteners caused by water accumulation during use and extending the service life.

[0175] For the installation points located above the battery module 20, a welding fixing method is used to hermetically connect the first seat installation structure 1121 to the reinforcing brackets 111. As Figure 6As shown, the first seat mounting structure 1121 is a nut that penetrates the upper cover body and is welded to the reinforcing bracket 111 at the top and bottom of the nut, thereby achieving the sealing of the battery box body 10. A weight-reducing hole is provided on the upper end face of the nut, which can reduce the weight of the first seat mounting structure 1121, and the weight-reducing hole is set as a blind hole to avoid affecting the sealing performance of the battery box body. In the subsequent production process, the seat can be locked to the nut through a bolt. For the first seat mounting structures 1121 above all the battery modules 20 in the battery box body 10, they are all welded and fixed to the same reinforcing bracket 111.

[0176] For the mounting points that are not above the battery module 20, the seat mounting structure is installed together with the box beam 115 inside the battery box body 10 through the connecting structure 114, so as to realize the force transmission and dispersion of the seat fixing point to the overall structure of the battery box body 10. As Figure 9 shown, the connecting structure 114 is fixedly welded to the upper part of the box beam 115. At the same time, welding holes 1151 are provided on both sides of the box beam 115, and are fixedly welded to the side surface of the box beam 115 through the welding holes 1151 on both sides of the box beam 115. One end face of the connecting structure 114 connected to the second seat mounting structure 1122 has a threaded hole 118, which serves as the locking point of the second seat mounting structure 1122, and the thread depth is determined according to the height of the second seat mounting structure 1122. The threaded hole 118 is a blind hole, and the bottom is provided with a sealing structure to prevent water vapor from entering the inside of the battery box body 10. A sealing groove is provided on the end face of the connecting structure 114 connected to the second seat mounting structure 1122, and a sealing ring 117 is embedded in the sealing groove. After being fixed to the second seat mounting structure 1122, the compression amount of the sealing ring 117 is between 15% and 30%, so as to achieve the sealing of the battery box body 10. As Figure 8 shown, a through hole is opened at the position of the upper cover 11 corresponding to the connecting structure 114. After the upper cover 11 is installed, the second seat mounting structure 1122 is installed on the connecting structure 114. The second seat mounting structure 1122 has external threads to achieve threaded fixation with the connecting structure 114. The second seat mounting structure 1122 has self-tapping threads inside and is provided with a threaded structure 119 for installing the seat, which serves as the locking structure for the seat mounting bolt. The thread depth of the threaded structure 119 is determined according to the length of the locking bolt of the seat mounting structure. The threaded structure 119 is a blind hole, and the bottom is provided with a sealing structure. The second seat mounting structure 1122 is fixedly connected to the lower box body 12 through the connecting structure 114, which can further enhance the stability of the seat mounting structure.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery box body, comprising a lower box body and an upper cover. The lower box body has a receiving cavity with one end open, the receiving cavity is used for accommodating a battery module, and the upper cover is used for covering the opening of the lower box body, characterized in that, The battery box body further includes: A plurality of seat mounting structures, which are located on the upper cover.

2. The battery box according to claim 1, wherein The upper cover includes an upper cover body, the upper cover body has an outer surface and an inner surface opposite to the outer surface, and at least one of the outer surface and the inner surface of the upper cover body is provided with a reinforcing bracket; The positions of the plurality of seat mounting structures correspond to the reinforcing brackets.

3. The battery box according to claim 1 or 2, characterized in that, The plurality of seat mounting structures include a first seat mounting structure and / or a second seat mounting structure, wherein, the first seat mounting structure is fixedly connected to the upper cover, and the position of the first seat mounting structure corresponds to that of the battery module, the second seat mounting structure is fixedly connected to the lower box body, and the position of the second seat mounting structure is staggered from that of the battery module.

4. The battery box according to claim 3, characterized in that, The first seat mounting structure is sealingly connected to the upper cover body.

5. The battery box according to claim 4, wherein The first seat mounting structure is welded to the upper cover body and sealed by welding.

6. The battery box according to claim 3, characterized in that, When a first reinforcing bracket is provided on the outer surface of the upper cover body, the first reinforcing bracket has a first mounting hole to expose the first seat mounting structure, and the first seat mounting structure is welded to the first reinforcing bracket.

7. The battery box according to claim 3, characterized in that, When a second reinforcing bracket is provided on the inner surface of the upper cover body, the first seat mounting structure is welded to the second reinforcing bracket.

8. The battery box according to claim 3, characterized in that, The first seat mounting structure is a nut or a bolt.

9. The battery box according to claim 3, wherein The battery box body further includes a connection structure, and the second seat mounting structure is fixedly connected to the lower box body through the connection structure.

10. The battery box according to claim 9, characterized in that, At least one box beam is provided in the lower box body, the position of the second seat mounting structure corresponds to that of the box beam, and the second seat mounting structure is fixedly connected to the box beam through the connection structure.

11. The battery box according to claim 10, wherein, The box beam has a hollow cavity, a second mounting hole communicating with the hollow cavity is provided on the box beam, one end of the connection structure passes through the second mounting hole and is located inside the box beam and is fixedly connected to the box beam, the other end of the connection structure is fixedly connected to the second seat mounting structure.

12. The battery box according to claim 11, wherein, The other end of the connection structure is configured to be sealingly connected to the upper cover body.

13. The battery box according to claim 12, characterized in that, The end face of the other end of the connection structure has a sealing groove, and a sealing ring is arranged in the sealing groove. The end face of the other end of the connection structure is configured to be in contact with the inner surface of the upper cover body, and when the other end of the connection structure is fixedly connected to the second seat mounting structure, the sealing ring is in a compressed state.

14. The battery box according to claim 13, characterized in that, When the other end of the connection structure is fixedly connected to the second seat mounting structure, the compression amount of the sealing ring is between 15% and 30%.

15. The battery box according to claim 11, characterized in that, The end face of the other end of the connection structure has a threaded hole for mounting the second seat mounting structure, and the threaded hole is a blind hole.

16. The battery box according to claim 9, wherein The lower box body includes a bottom plate opposite to the upper cover, the second seat mounting structure is fixedly connected to the bottom plate through the connection structure, and the connection structure is staggered from the position of the battery module.

17. The battery box according to claim 16, characterized in that, At least one box beam is arranged in the lower box body, and the second seat mounting structure corresponds to the position of the box beam. One end of the connecting structure penetrates through the box beam and extends to the bottom plate and is fixedly connected to the bottom plate, and the other end of the connecting structure is fixedly connected to the second seat mounting structure. And the connecting structure is fixedly connected to the box beam.

18. The battery box according to claim 9, characterized in that, The second seat mounting structure has a threaded structure for mounting the seat.

19. The battery box according to any one of claims 2-18, characterized in that, The reinforcing bracket is a sheet metal bracket, and the reinforcing bracket has at least one bending structure.

20. The battery box according to claim 19, wherein, An installation cavity is formed between the at least one bending structure and the upper cover body, and at least a part of the seat mounting structure is located in the installation cavity.

21. The battery box according to any one of claims 2-18, characterized in that, There are at least one opening on the reinforcing bracket.

22. The battery box according to any one of claims 2-18, wherein, The reinforcing bracket is welded to the upper cover body to form a plurality of welding points, and a convex structure is provided at a position of the reinforcing bracket close to the welding points.

23. The battery box according to any one of claims 2-18, characterized in that, The reinforcing bracket is strip-shaped, and the reinforcing bracket extends from one side where one side edge of the upper cover body is located to the other side where the opposite side edge is located.

24. The battery box according to any one of claims 2-18, characterized in that, A plurality of reinforcing brackets are arranged on both the outer surface and the inner surface of the upper cover body, and the positions of the plurality of reinforcing brackets on the outer surface and the plurality of reinforcing brackets on the inner surface correspond to each other one by one.

25. The battery box according to claim 24, wherein The two reinforcing brackets corresponding to each other in position on the outer surface and the inner surface have bending structures with corresponding positions and opposite bending directions.

26. A battery, comprising a battery box body and a battery module placed in the battery box body, characterized in that, The battery box body adopts the battery box body described in any one of claims 1-25.

27. An electrical device, characterized in that, The electric device includes the battery described in claim 26, and the battery is used to provide electric energy.

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