Battery box body, battery and electric device

Abstract

The utility model discloses a battery box body, a battery and an electric device. The battery box comprises a box body, a mounting beam and a connecting beam, the mounting beam is arranged on one side of the box body in the first direction, the connecting beam is connected between the box body and the mounting beam, and a cavity is formed in the connecting beam. According to the battery box body disclosed by the embodiment of the invention, the connecting beam is arranged between the box body and the mounting beam, and the cavity is formed in the connecting beam, so that when the battery box body is collided in the use process, the connecting beam can achieve a better buffering and energy-absorbing effect and an anti-collision effect, and the reliability of a battery is improved.

Description

Technical Field

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

[0002] Batteries are widely used as a power source for electric vehicles. A traditional battery module includes a battery and a box. In the related art, a mounting beam is usually provided on the box, and the mounting beam is used to connect to the vehicle so as to hang the battery module on the vehicle.

[0003] However, the traditional box has poor energy absorption performance and is easily deformed and squeezed after a collision, affecting the reliability of the battery during use. Utility Model Content

[0004] In view of the above problems, the main purpose of this application is to provide a battery box, a battery and an electrical device, aiming to solve the problem that the traditional box is easily deformed and squeezed after a collision, affecting the reliability of the battery.

[0005] In a first aspect, the present application provides a battery box, comprising:

[0006] Box;

[0007] A mounting beam is disposed on one side of the box body in the first direction; and

[0008] The connecting beam is connected between the box body and the mounting beam along a first direction, and a cavity is formed inside the connecting beam.

[0009] In the technical solution of the present application, the box body and the mounting beam are connected by a connecting beam, and a cavity is provided inside the connecting beam. When the battery box body is subjected to external forces such as collision, the mounting beam is subjected to force and the force is transmitted to the connecting beam. After the connecting beam is subjected to force, it can deform toward the cavity side to absorb the energy generated by the external forces such as collision, avoid deformation of the box body after being subjected to force or reduce the deformation amount of the box body after being subjected to force, so that the battery box body with such a structure can have a better buffering energy absorption effect and anti-collision effect when a collision occurs during use, so as to provide better protection for the battery, thereby improving the energy absorption performance of the battery box body and improving the reliability of the battery. In addition, the connecting beam with such a structure is also conducive to reducing the weight of the battery box itself, so as to achieve a weight reduction effect.

[0010] In some embodiments, the cavity is extended along the second direction, and the first direction and the second direction are perpendicular to each other. In the present application, the direction in which the mounting beam applies force to the connecting beam is perpendicular to the extension direction of the cavity. When the battery box is hit, the mounting beam can apply force to the connecting beam along the first direction, and the connecting beam can deform toward the cavity along the first direction to achieve buffering and energy absorption, which is conducive to further improving the energy absorption effect of the connecting beam. In addition, when the cavity is extended along the length direction of the connecting beam, the structure of the connecting beam can be simplified, which is convenient for the production and processing of the connecting beam.

[0011] In some embodiments, the connecting beam includes a partition disposed in the cavity, the partition being used to divide the cavity into two sub-cavities arranged along a third direction. Dividing the cavity into a plurality of sub-cavities by the partition is conducive to further improving the energy absorption effect of the connecting beam, thereby effectively improving the protective effect of the battery box on the battery.

[0012] In some embodiments, the partition is provided with one;

[0013] Alternatively, at least two partitions are provided, and at least two partitions are arranged in sequence along the third direction to divide the cavity into at least three sub-cavities arranged in sequence along the third direction. By dividing the cavity into at least three sub-cavities by at least two partitions, the number of sub-cavities can be increased, which is conducive to further improving the energy absorption effect of the connecting beam.

[0014] In some embodiments, the connecting beam further comprises an upper plate portion, a first side plate portion, a lower plate portion and a second side plate portion which are sequentially connected and surround an annular frame, and the cavity is formed in the annular frame;

[0015] The partition is a partition plate, which is located in the annular frame, and the two ends of the partition plate are connected to the first side plate and the second side plate respectively. By simplifying the structure of the connecting beam, the convenience of production and processing of the connecting beam can be improved, and the weight of the battery box can be reduced; in addition, the first side plate and the second side plate are connected by the partition plate, which can increase the strength of the annular frame and avoid damage to the connecting beam.

[0016] In some embodiments, the connecting beam is a roller beam structure, the first side plate portion includes a first section and a second section which are separately arranged, one of the first section and the second section is connected to the upper plate portion, and the other is connected to the lower plate portion;

[0017] The first section is connected to the partition, the second section includes a first flange welded to the partition, and the partition includes a second flange welded to the second side plate. By providing the first flange on the second section, the first section and the second section can be welded more firmly, and by providing the second flange on the partition, the partition and the second side plate can be welded more firmly, thereby improving the overall stability of the connecting beam.

[0018] In some embodiments, the box body includes a bottom plate, side plates and an extension plate, the side plates are arranged around the bottom plate, and the extension plate is connected to the side plates and extends along the first direction;

[0019] The battery box also includes a first fastening assembly, and the extension plate and the connecting beam are fastened together by the first fastening assembly. The first fastening assembly fastens the extension plate and the upper plate, which can make the connection between the battery box and the connecting beam more stable and make the battery box and the connecting beam more convenient to disassemble and assemble.

[0020] In some embodiments, the side panels are inclined relative to the third direction, and the connecting beam includes an inclined surface that matches the side panels. By providing the connecting beam with an inclined surface that matches the side panels, the fitting effect between the connecting beam and the box body can be improved, thereby improving the stability of the connection between the connecting beam and the box body.

[0021] In some embodiments, the mounting beam includes an upper enclosure, a lower enclosure, and an inner lining plate, a mounting cavity is formed between the upper enclosure and the lower enclosure, and the inner lining plate is supported and arranged in the mounting cavity. By supporting the mounting cavity with the inner lining plate, the overall stability of the mounting beam can be improved, and thus the mounting capacity of the battery box can be improved.

[0022] In some embodiments, the battery box further includes a bottom guard plate and a second fastening assembly, the bottom guard plate is used to support the box, the mounting beam further includes a connecting plate connected to the lower enclosure plate, the connecting plate is at least partially located between the bottom guard plate and the connecting beam, and the connecting beam, the connecting plate and the bottom guard plate are sequentially fastened and connected by the second fastening assembly. The second fastening assembly sequentially fastens the connecting beam, the connecting plate and the bottom guard plate, making it easier to disassemble and assemble the connecting beam, the connecting plate and the bottom guard plate.

[0023] In some embodiments, the upper enclosure plate includes an enclosure plate body and a third flange, the third flange is arranged along a third direction and is welded to the connecting beam;

[0024] And / or, the inner lining plate includes a lining plate body and a fourth flange, and the fourth flange is arranged along the third direction and welded to the connecting beam. By arranging the third flange on the upper enclosure plate, the connection between the upper enclosure plate and the connecting beam can be made more firmly, and by arranging the fourth flange on the inner lining plate, the connection between the inner lining plate and the connecting beam can be made more firmly, thereby improving the stability of the connection between the mounting beam and the connecting beam.

[0025] In a second aspect, the present application provides a battery, which includes the battery case in the above-mentioned solution.

[0026] In a third aspect, the present application provides an electrical device, which includes the battery in the above solution, and the battery is used to provide electrical energy.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0031] Figure 2 An exploded schematic diagram of a battery according to some embodiments of the present application;

[0032] Figure 3 Schematic diagram of the exploded structure of the battery box in some embodiments of the present application Figure 1 ;

[0033] Figure 4 Schematic diagram of the exploded structure of the battery box in some embodiments of the present application Figure 2 ;

[0034] Figure 5 A top view of a battery box according to some embodiments of the present application;

[0035] Figure 6 This is a schematic diagram of the structure of the connecting beam in some embodiments of the present application;

[0036] Figure 7 This is a schematic diagram of the cross-sectional structure of a battery box along the Y direction of some embodiments of the present application;

[0037] Figure 8 Schematic diagram of the structure of connecting beams of other embodiments of the present application.

[0038] The reference numerals in the specific implementation manner are as follows:

[0039] Vehicles 1000;

[0040] Battery 100, controller 200, motor 300;

[0041] Battery box 10, first part 11, bottom plate 111, side plate 112, extension plate 113, second part 12;

[0042] Battery cell 20,

[0043] The mounting beam 30, the upper enclosure plate 31, the enclosure plate body 311, the third flange 312, the lower enclosure plate 32, the inner lining plate 33, the lining plate body 331, the fourth flange 332, and the connecting plate 34;

[0044] Connecting beam 40, cavity 41, partition 42, upper plate 43, first side plate 44, first section 441, second section 442, lower plate 45, second side plate 46, first flange 47, second flange 48, connecting portion 49;

[0045] Bottom guard plate 50;

[0046] A first fastening assembly 60;

[0047] The second fastening assembly 70 .

[0048] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0051] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0052] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of 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 the specific circumstances.

[0057] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. Traditional batteries are composed of a box and multiple battery cells contained in the box. Related technologies usually set a mounting beam on the box, which is used to connect to the vehicle to hang the battery on the vehicle. Among them, batteries, as core components of new energy vehicles, have high requirements in terms of reliability. At present, the reliability of power batteries during use is one of the issues that consumers generally care about.

[0058] During the actual use of the battery, the battery will be affected by various complex usage environments. In particular, in vehicles equipped with such batteries, the proportion of side collisions in traffic accidents is relatively high, which makes the battery very easy to be squeezed during the side collision, resulting in the battery cells in the box being prone to fire and explosion risks.

[0059] In order to solve the problem of fire and explosion of batteries in the event of a collision during use, in the prior art, a frame assembly for loading and protecting the battery is usually provided on the outer peripheral side of the battery. On the one hand, the battery can be installed on the vehicle through the frame assembly, and on the other hand, it can also absorb energy and prevent collisions in the event of a collision, so as to provide certain protection for the battery. However, the existing frame assembly has a complex structure, is inconvenient to process and install, and has a poor buffering and energy absorption effect in the event of a collision, which makes it impossible to provide a good protection effect for the battery, thereby resulting in poor reliability of the battery during use.

[0060] Based on the above considerations, in order to solve the problem that the traditional battery box has poor energy absorption performance, which leads to poor reliability of the battery in the later use process, a battery box was designed after in-depth research. The battery box includes a box body, a mounting beam and a connecting beam. The mounting beam is arranged on one side of the box body in a first direction, and the connecting beam is connected between the box body and the mounting beam. A cavity is formed inside the connecting beam.

[0061] When a battery case of this structure is used, the case and the mounting beam are connected by a connecting beam, and a cavity is provided inside the connecting beam. When the battery case is subjected to external forces such as collision, the mounting beam is subjected to force and transmitted to the connecting beam. After the connecting beam is subjected to force, it can deform toward the cavity side to absorb the energy generated by external forces such as collision, avoid deformation of the case after being subjected to force or reduce the deformation of the case after being subjected to force. Therefore, when a battery case of this structure is subjected to collision during use, it can have a better buffering energy absorption effect and anti-collision effect, so as to provide better protection for the battery, thereby improving the energy absorption performance of the battery case and improving the reliability of the battery. Secondly, this battery case has a simple structure and is more convenient to install and process. In addition, the connecting beam of this structure is also conducive to reducing the weight of the battery case itself, so as to achieve a weight reduction effect.

[0062] The battery box disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. The power supply system of the electrical device can be composed of the battery box and battery system disclosed in the present application, which is beneficial to improve the protection of the battery and improve the reliability of the battery.

[0063] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0064] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0065] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0066] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0067] Please refer to Figure 2 , Figure 2Schematic diagram of an explosion of a battery 100 provided for some embodiments of the present application. The battery 100 includes a battery case 10 and a battery cell 20, and the battery cell 20 is contained in the battery case 10. Among them, the battery case 10 is used to provide a storage space for the battery cell 20, and the battery case 10 can adopt a variety of structures. In some embodiments, the battery case 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20. The first part 11 can be a hollow structure with one end open, and the second part 12 can be a plate-like structure, and the second part 12 covers the open side of the first part 11, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 can also be hollow structures with one side open, and the open side of the second part 12 covers the open side of the first part 11. Of course, the battery case 10 formed by the first part 11 and the second part 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0068] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the battery case 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the battery case 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0069] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0070] According to some embodiments of this application, please refer to Figures 3 to 5 , Figure 7 , Figure 3 Schematic diagram of the exploded structure of the battery box in some embodiments of the present application Figure 1 , Figure 4 Schematic diagram of the exploded structure of the battery box in some embodiments of the present application Figure 2 , Figure 5 This is a top view of a battery box in some embodiments of the present application. Figure 7The cross-sectional structure diagram of the battery box along the Y direction of some embodiments of the present application. The present application provides a battery box 10, which is used to be installed on a vehicle 1000. The battery box 10 includes a box, a mounting beam 30 and a connecting beam 40. The mounting beam 30 is arranged on one side of the box in a first direction. Along the first direction, the connecting beam 40 is connected between the box and the mounting beam 30, and a cavity 41 is formed inside the connecting beam 40.

[0071] like Figure 3 and Figure 4 As shown in the figure, the Y direction is the width direction of the battery case 10, the X direction is the length direction of the battery case 10, and the Z direction is the height direction of the battery case 10.

[0072] Exemplarily, the battery box 10 includes a first part 11 and a second part 12, wherein the first part 11 includes the above-mentioned box, the mounting beam 30 and the connecting beam 40. The box is a stamped box made by a stamping process, the mounting beam 30 is a stamped mounting beam made by a stamping process, and the connecting beam 40 is a rolled connecting beam made by a rolling process. The first direction is Figure 3 The X direction shown in .

[0073] For example, the cavity 41 inside the connecting beam 40 can be extended along the first direction, can be extended along the second direction, or can be extended along the third direction. Figure 3 The Y direction is shown in the figure, and the third direction is Figure 3 The connecting beam 40 is welded to the mounting beam 30. Of course, in other embodiments, the connecting beam 40 can also be connected to the mounting beam 30 by threaded connection or clamping. The connecting beam 40 and the box body can be threadedly connected by a screw. Of course, in other embodiments, the connecting beam 40 can also be connected to the box body by welding or clamping.

[0074] The box body and the mounting beam 30 are connected by a connecting beam 40, and a cavity 41 is provided inside the connecting beam 40. When the battery box body 10 is subjected to external forces such as collision, the mounting beam 30 is subjected to force and transmitted to the connecting beam 40. After the connecting beam 40 is subjected to force, it can deform toward the cavity 41 side to absorb the energy generated by the external forces such as collision, so as to avoid deformation of the box body after being subjected to force or reduce the deformation amount of the box body after being subjected to force. Therefore, the battery box body 10 with such a structure can play a better buffering energy absorption effect and anti-collision effect when a collision occurs during use, so as to play a better protective role for the battery, thereby improving the energy absorption performance of the battery box body 10 and improving the reliability of the battery 100. Secondly, the battery box body 10 has a simple structure and is more convenient to install and process. In addition, the connecting beam 40 with such a structure is also conducive to reducing the weight of the battery box body 10 itself, so as to achieve the effect of weight reduction.

[0075] According to some embodiments of this application, see Figure 3 and Figure 4 The cavity 41 extends along the second direction, and the first direction and the second direction are perpendicular to each other.

[0076] The cavity 41 inside the connecting beam 40 is opened at both ends along the second direction, and the cavity 41 is a hole structure penetrating the connecting beam 40 along the second direction.

[0077] In the battery case 10 of this structure, the direction in which the mounting beam 30 applies force to the connecting beam 40 is perpendicular to the extension direction of the cavity 41. When the battery case 10 is hit, the mounting beam 30 can apply force to the connecting beam 40 along the first direction, and the connecting beam 40 can deform toward the cavity 41 along the first direction to achieve buffering and energy absorption, which is conducive to further improving the energy absorption effect of the connecting beam 40. In addition, when the cavity 41 is extended along the length direction of the connecting beam 40, the structure of the connecting beam 40 can be simplified, which is convenient for the production and processing of the connecting beam 40.

[0078] According to some embodiments of this application, see Figure 4 , Figure 6 , Figure 7 and Figure 8 , Figure 6 This is a schematic diagram of the structure of the connecting beam in some embodiments of the present application. Figure 8 It is a schematic structural diagram of the connecting beam of some other embodiments of the present application. The connecting beam 40 includes a partition 42 arranged in the cavity 41, and the partition 42 is used to divide the cavity 41 into two sub-cavities arranged along the third direction.

[0079] The shape of the partition 42 is not limited and may be a plate-like structure, a block-like structure, etc. The partition 42 may extend along the second direction to divide the cavity 41 into two sub-cavities arranged along the third direction and a single sub-cavity may extend along the second direction.

[0080] The cavity 41 is divided into a plurality of sub-cavities by the partition 42, which is conducive to further improving the energy absorption effect of the connecting beam 40, thereby effectively improving the protection of the battery box 10 to the battery. In addition, by arranging the partition 42 in the cavity 41 and supporting and fixing the cavity 41 by the partition 42, the overall strength of the connecting beam 40 can also be enhanced.

[0081] Specifically, in one embodiment, see Figure 7 , the partition 42 is provided with one.

[0082] The cavity 41 is divided into two sub-cavities by a partition 42, which is conducive to further improving the energy absorption effect of the connecting beam 40, thereby effectively improving the protection of the battery box 10 to the battery. In addition, by arranging the partition 42 in the cavity 41 and supporting and fixing the cavity 41 by the partition 42, the overall strength of the connecting beam 40 can also be enhanced.

[0083] In another embodiment, at least two partitions 42 are provided, and the at least two partitions 42 are sequentially arranged along the third direction to divide the cavity 41 into at least three sub-cavities sequentially arranged along the third direction.

[0084] Among them, the number of partitions 42 can be two, three, four, five or six, etc., and the number of sub-cavities is one more than the number of partitions 42, and the number of sub-cavities can be three, four, five, six or seven, etc.

[0085] Exemplarily, the connecting beam 40 also includes a connecting portion 49 arranged along a third direction. Among at least two partitions 42, two adjacent partitions 42 along the third direction are connected by the connecting portion 49. The connecting portion 49 is connected to the same side ends of the two partitions 42. The connecting portion 49 can be arranged to fit the inner wall of the cavity 41 to improve the inherent strength of the connecting beam 40.

[0086] For example, see Figure 8 There are two partitions 42, and the two partitions 42 are arranged in sequence along the third direction to divide the cavity 41 into three sub-cavities arranged in sequence along the third direction.

[0087] According to some embodiments of this application, see Figure 6 , Figure 7 and Figure 8 The connecting beam 40 also includes an upper plate portion 43, a first side plate portion 44, a lower plate portion 45 and a second side plate portion 46 which are connected in sequence and form a ring-shaped frame, and the cavity 41 is formed in the ring-shaped frame; the partition portion 42 is a partition plate, which is located in the ring-shaped frame, and the two ends of the partition plate are respectively connected to the first side plate portion 44 and the second side plate portion 46.

[0088] The upper plate 43, the first side plate 44, the lower plate 45 and the second side plate 46 form a cavity 41 in the annular frame, and the annular frame is a long frame structure extending along the second direction. The upper plate 43 can be arranged parallel to the lower plate 45, and the partition plate can be arranged parallel to the upper plate 43 or the lower plate 45.

[0089] By simplifying the structure of the connecting beam 40, the convenience of production and processing of the connecting beam 40 can be improved and the weight of the battery box 10 itself can be reduced; in addition, the first side plate portion 44 and the second side plate portion 46 are connected by a partition plate, which can increase the strength of the annular frame and avoid damage to the connecting beam 40.

[0090] According to some embodiments of this application, see Figure 6 , Figure 7 and Figure 8 The connecting beam 40 is a rolled beam structure, and the first side plate portion 44 includes a first section 441 and a second section 442 which are separately arranged, one of the first section 441 and the second section 442 is connected to the upper plate portion 43, and the other is connected to the lower plate portion 45; the first section 441 is connected to the partition portion 42, the second section 442 includes a first flange 47 welded to the partition portion 42, and the partition portion 42 includes a second flange 48 welded to the second side plate portion 46.

[0091] By providing a first flange 47 on the second section 442 , the first section 441 and the second section 442 can be welded more firmly. By providing a second flange 48 on the partition 42 , the partition 42 and the second side plate 46 can be welded more firmly, thereby improving the overall stability of the connecting beam 40 .

[0092] Specifically, in one implementation, see Figure 6 and Figure 7 When the connecting beam 40 includes a partition 42 and the partition 42 is provided with one, the first section 441 is connected to the partition 42, the second section 442 includes a first flange 47 welded to the partition 42, and the partition 42 includes a second flange 48 welded to the second side plate portion 46.

[0093] Among them, the first flange 47 is set along the first direction, and the second flange 48 is set along the third direction. Of course, in other embodiments, the first flange 47 can also be connected to the partition portion 42 by bonding or threaded connection, and the second flange 48 can also be connected to the second side plate portion 46 by bonding or threaded connection.

[0094] In another embodiment, see Figure 8 In the case where the connecting beam 40 includes a partition 42 and at least two partitions 42 are provided, two adjacent partitions 42 are connected via a connecting portion 49, the partition 42 closest to the second section 442 of at least two partitions 42 is connected to the first section 441, the second section 442 includes a first flange 47 welded to the partition 42, and the partition 42 farthest from the second section 442 of at least two partitions 42 includes a second flange 48 welded to the second side plate portion 46.

[0095] Among them, the first flange 47 is set along the first direction, and the second flange 48 is set along the third direction. Of course, in other embodiments, the first flange 47 can also be connected to the partition portion 42 by bonding or threaded connection, and the second flange 48 can also be connected to the second side plate portion 46 by bonding or threaded connection.

[0096] According to some embodiments of this application, see Figures 3 to 8 The box body includes a bottom plate 111, a side plate 112 and an extension plate 113. The side plate 112 is arranged around the bottom plate 111. The extension plate 113 is connected to the side plate 112 and extends along the first direction. The battery box body 10 also includes a first fastening component 60. The extension plate 113 and the connecting beam 40 are fastened together by the first fastening component 60.

[0097] Among them, the extension plate 113 can be an annular enclosure plate arranged around the box body, and the connecting beam 40 is arranged on one side of the extension plate 113 along the third direction. The extension plate 113 and the upper plate portion 43 of the connecting beam 40 are parallel to each other and are fastened together by a first fastening component 60.

[0098] Among them, the specific structure of the first fastening component 60 is not limited, and it can be a threaded fastening component, a pin fastening component, a rivet fastening component, etc. For example, the first fastening component 60 in this embodiment can be a bolt fastening component, and the bolt fastening component includes a first bolt and a first nut. The extension plate 113 and the upper plate portion 43 are both provided with a first through hole. The first bolt extends through the extension plate 113 and the upper plate portion 43 in turn and is threadedly connected with the first nut to achieve a fastening effect between the extension plate 113 and the upper plate portion 43.

[0099] By fastening the extension plate 113 and the upper plate portion 43 with the first fastening assembly 60 , the connection between the battery box 10 and the connecting beam 40 can be made more stable, and the battery box 10 and the connecting beam 40 can be more conveniently assembled and disassembled.

[0100] According to some embodiments of this application, see Figure 6 and Figure 7 The side plate 112 is inclined relative to the third direction, and the connecting beam 40 includes an inclined surface corresponding to the side plate 112.

[0101] Exemplarily, the side panel 112 is tilted in a direction away from the center side of the box body, the first side panel portion 44 of the connecting beam 40 is connected to the mounting beam 30, the second side panel portion 46 is arranged close to the side panel 112 of the box body, the second side panel portion 46 is tilted toward the first side panel portion 44 relative to the third direction, the second side panel portion 46 and the side panel 112 are parallel to each other, and the second side panel portion 46 is provided with an inclined surface corresponding to and matching the side panel 112, and the inclined surface is in contact with the side panel 112.

[0102] By providing an inclined surface matching the side plate 112 on the connecting beam 40 , the fitting effect between the connecting beam 40 and the box body can be improved, thereby improving the stability of the connection between the connecting beam 40 and the box body.

[0103] According to some embodiments of this application, see Figure 4and Figure 7 The mounting beam 30 includes an upper enclosure plate 31, a lower enclosure plate 32 and an inner lining plate 33. A mounting cavity is formed between the upper enclosure plate 31 and the lower enclosure plate 32, and the inner lining plate 33 is supported and arranged in the mounting cavity.

[0104] By supporting the mounting cavity through the inner lining plate 33 , the overall stability of the mounting beam 30 can be improved, thereby improving the mounting capacity of the battery box 10 .

[0105] According to some embodiments of this application, see Figure 3 , Figure 4 and Figure 7 The battery box 10 also includes a bottom guard plate 50 and a second fastening assembly 70. The bottom guard plate 50 is used to support the box. The mounting beam 30 also includes a connecting plate 34 connected to the lower enclosure 32. The connecting plate 34 is at least partially located between the bottom guard plate 50 and the connecting beam 40. The connecting beam 40, the connecting plate 34 and the bottom guard plate 50 are fastened and connected in sequence by the second fastening assembly 70.

[0106] Among them, the connecting plate 34 is located between the lower plate portion 45 of the connecting beam 40 and the bottom guard plate 50, and one end of the connecting plate 34 extends between the box body and the bottom guard plate 50. The specific structure of the second fastening assembly 70 is not limited, and it can be a threaded fastening assembly, a pin fastening assembly, a rivet fastening assembly, etc. For example, the second fastening assembly 70 in this embodiment can be a bolt fastening assembly, and the bolt fastening assembly includes a second bolt and a second nut. The lower plate portion 45, the connecting plate 34 and the bottom guard plate 50 are all provided with a second through hole. The second bolt extends through the bottom guard plate 50, the connecting plate 34 and the lower plate portion 45 in turn and is threadedly connected to the second nut to achieve a fastening effect between the connecting beam 40, the connecting plate 34 and the bottom guard plate 50.

[0107] By sequentially fastening the connecting beam 40 , the connecting plate 34 and the bottom guard plate 50 through the second fastening assembly 70 , the connecting beam 40 , the connecting plate 34 and the bottom guard plate 50 can be more conveniently assembled and disassembled.

[0108] According to some embodiments of this application, see Figure 7 The upper enclosure 31 includes an enclosure body 311 and a third flange 312 . The third flange 312 is arranged along the third direction and is welded to the connecting beam 40 .

[0109] The third flange 312 is arranged along the third direction, and the third flange 312 can be welded to the first side plate portion 44 of the connecting beam 40. Of course, in other embodiments, the third flange 312 can also be connected to the connecting beam 40 by bonding or threaded connection.

[0110] By providing the third flange 312 on the upper enclosure plate 31 , the connection between the upper enclosure plate 31 and the connecting beam 40 can be made more firmly, thereby improving the stability of the connection between the mounting beam 30 and the connecting beam 40 .

[0111] According to some embodiments of this application, see Figure 7 The inner lining plate 33 includes a lining plate body 331 and a fourth flange 332 . The fourth flange 332 is arranged along the third direction and welded to the connecting beam 40 .

[0112] The fourth flange 332 is arranged along the third direction, and the fourth flange 332 can be welded to the first side plate portion 44 of the connecting beam 40. Of course, in other embodiments, the fourth flange 332 can also be connected to the connecting beam 40 by bonding or threaded connection.

[0113] By providing the fourth flange 332 on the upper enclosure plate 31 , the connection between the upper enclosure plate 31 and the connecting beam 40 can be made more firmly, thereby improving the stability of the connection between the mounting beam 30 and the connecting beam 40 .

[0114] According to some embodiments of this application, see Figures 3 to 8 The battery box 10 is composed of a stamped box, a stamped mounting beam 30, a rolled connecting beam 40 and a bottom guard plate 50. The box, the connecting beam 40 and the mounting beam 30 are arranged in sequence along the X direction. The box and the mounting beam 30 are connected by the connecting beam 40. A cavity 41 is arranged inside the connecting beam 40, and the cavity 41 extends along the Y direction. The bottom guard plate 50 is used to support the box.

[0115] Among them, the connecting beam 40 includes an upper plate portion 43, a first side plate portion 44, a lower plate portion 45, a second side plate portion 46 and a partition portion 42. The upper plate portion 43, the first side plate portion 44, the lower plate portion 45 and the second side plate portion 46 are connected in sequence and form an annular frame. The cavity 41 is formed in the annular frame. The partition portion 42 is arranged in the cavity 41 and divides the cavity 41 into two sub-cavities arranged along the Z direction.

[0116] The box body includes a bottom plate 111, a side plate 112 and an extension plate 113. The side plate 112 is arranged around the bottom plate 111. The extension plate 113 is connected to the side plate 112 and extends along the X direction. The first bolt extends through the extension plate 113 and the upper plate portion 43 in sequence and is threadedly connected to the first nut.

[0117] Among them, the mounting beam 30 includes an upper enclosure plate 31, a lower enclosure plate 32, an inner lining plate 33 and a connecting plate 34. A mounting cavity is formed between the upper enclosure plate 31 and the lower enclosure plate 32. The inner lining plate 33 is supported and arranged in the mounting cavity. The connecting plate 34 is connected to the lower enclosure plate 32. The second bolt extends through the bottom guard plate 50, the connecting plate 34 and the lower plate portion 45 in sequence and is threadedly connected to the second nut.

[0118] According to some embodiments of the present application, the present application provides a battery. Since the battery includes all embodiments of all technical solutions of the above-mentioned battery case, it at least has all the beneficial effects brought by all the above-mentioned embodiments, which will not be described one by one here.

[0119] According to some embodiments of the present application, the present application provides an electric device, and the battery is used to provide electric energy. Since the electric device includes all embodiments of all technical solutions of the above-mentioned battery, it at least has all the beneficial effects brought by all the above-mentioned embodiments, which will not be repeated here one by one.

[0120] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery box, characterized in that: include: Box; A mounting beam, disposed on one side of the box body in the first direction; as well as A connecting beam is connected between the box body and the mounting beam along a first direction, and a cavity is formed inside the connecting beam.

2. The battery box according to claim 1, characterized in that: The cavity is extended along a second direction, and the first direction and the second direction are perpendicular to each other.

3. The battery case according to claim 1, characterized in that: The connecting beam includes a partition provided in the cavity, and the partition is used to divide the cavity into two sub-cavities arranged along a third direction.

4. The battery case according to claim 3, characterized in that: The partition is provided with one; Alternatively, at least two partitions are provided, and at least two partitions are arranged sequentially along the third direction to divide the cavity into at least three sub-cavities arranged sequentially along the third direction.

5. The battery case according to claim 3, characterized in that: The connecting beam further comprises an upper plate portion, a first side plate portion, a lower plate portion and a second side plate portion which are sequentially connected and surround an annular frame, and the cavity is formed in the annular frame; The partition part is a partition plate, the partition plate is located in the annular frame, and two ends of the partition plate are respectively connected to the first side plate part and the second side plate part.

6. The battery case according to claim 5, characterized in that: The connecting beam is a roller beam structure, the first side plate portion comprises a first section and a second section which are separately arranged, one of the first section and the second section is connected to the upper plate portion, and the other is connected to the lower plate portion; The first section is connected to the partition, the second section includes a first flange welded to the partition, and the partition includes a second flange welded to the second side plate.

7. The battery case according to any one of claims 1 to 6, characterized in that: The box body comprises a bottom plate, side plates and an extension plate, wherein the side plates are arranged around the bottom plate, and the extension plate is connected to the side plates and extends along a first direction; The battery box also includes a first fastening assembly, and the extension plate and the connecting beam are fastened and connected via the first fastening assembly.

8. The battery case according to claim 7, characterized in that: The side plate is inclined relative to the third direction, and the connecting beam includes an inclined surface corresponding to and matching the side plate.

9. The battery case according to any one of claims 1 to 6, characterized in that: The mounting beam comprises an upper enclosure plate, a lower enclosure plate and an inner lining plate. A mounting cavity is formed between the upper enclosure plate and the lower enclosure plate, and the inner lining plate is supported and arranged in the mounting cavity.

10. The battery case according to claim 9, characterized in that: The battery box body also includes a bottom guard plate and a second fastening assembly, the bottom guard plate is used to support the box body, the mounting beam also includes a connecting plate connected to the lower enclosure plate, the connecting plate is at least partially located between the bottom guard plate and the connecting beam, and the connecting beam, the connecting plate and the bottom guard plate are fastened and connected in sequence by the second fastening assembly.

11. The battery case according to claim 9, characterized in that: The upper enclosure plate comprises an enclosure plate body and a third flange, one end of the third flange is connected to the enclosure plate body, and the other end extends along the third direction and is welded to the connecting beam; And / or, the inner lining plate includes a lining plate body and a fourth flange, one end of the fourth flange is connected to the lining plate body, and the other end extends along a third direction and is welded to the connecting beam.

12. A battery, characterized in that: Comprising the battery case according to any one of claims 1 to 11.

13. An electrical device, characterized in that: Comprising the battery of claim 12, the battery being used to provide electrical energy.

Images