Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment. The battery device comprises a box body, an expansion beam and a battery monomer, the box body comprises a box main body and at least one limiting structure, and the limiting structure is arranged on at least one side of the box main body along a first direction. The box body is provided with a containing cavity opened in the second direction. The expansion beam is arranged in the containing cavity and extends in the first direction, and at least one end, in the first direction, of the expansion beam is inserted into the limiting structure. And the battery monomers are arranged in the accommodating cavity and are positioned on one side of the expansion beam along the third direction. In the installation process, at least one end, in the first direction, of the expansion beam can be inserted into the limiting structure on the box body, then the expansion beam can be limited in the box body in the first direction, the second direction and the third direction, the technological process of installation between the expansion beam and the box body is simplified, and installation convenience is improved; meanwhile, the risk of back-twisting is avoided, and the installation stability of the expansion beam is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and an electric equipment. BACKGROUND

[0002] The battery device is widely used in electronic equipment, such as mobile phone, notebook computer, electric vehicle, electric automobile, electric airplane, electric ship, electric toy automobile, electric toy ship, electric toy airplane and electric tool.

[0003] The battery device usually comprises a box body and an expansion beam arranged in the box body, and the expansion beam is connected with the box body by welding or threaded fastener. However, the welding process is relatively complex, and the threaded fastener may be loosened due to the risk of back-tightening during use of the battery device. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a battery device and an electric equipment to solve the technical problems of complex connection structure and poor stability between the expansion beam and the box body.

[0005] According to a first aspect of the present application, a battery device is provided, comprising a box body, an expansion beam and a battery cell, the box body comprising a box main body and at least one limiting structure, the limiting structure being arranged on at least one side of the box main body along a first direction. The box main body has a receiving cavity which is open along a second direction. The expansion beam is arranged in the receiving cavity, and the expansion beam extends along the first direction, and at least one end of the expansion beam along the first direction is inserted into the limiting structure. The battery cell is arranged in the receiving cavity and located on one side of the expansion beam along a third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0006] In the technical solution of the present application, during installation of the expansion beam into the box body, at least one end of the expansion beam along the first direction is inserted into the limiting structure on the box main body, so that the expansion beam is limited in the box main body along the first direction, the second direction and the third direction, thereby simplifying the process flow of installation between the expansion beam and the box main body, improving the installation convenience, avoiding the risk of back-tightening as in the threaded connection, and effectively improving the installation stability of the expansion beam.

[0007] In one embodiment, the limiting structure has a limiting groove, the limiting groove is communicated with the receiving cavity, and the limiting groove extends along the first direction. Part of the expansion beam is inserted into the limiting groove; at least one of the box main body and the expansion beam can produce elastic deformation along the first direction.

[0008] Since at least one of the box main body and the expansion beam can produce elastic deformation along the first direction, the installation and connection between the expansion beam and the box main body are facilitated.

[0009] In one of the embodiments, the expansion beam comprises an expansion beam body and a mounting structure; the expansion beam body extends along a first direction; the mounting structure comprises a mounting portion and an elastic portion; the mounting portion is connected to the expansion beam body through the elastic portion; the elastic portion is arranged to be extendable along the first direction; at least part of the mounting portion is inserted into a limiting groove.

[0010] In use, the elastic portion can be compressed along the first direction, so that at least part of the mounting portion can be inserted into the limiting groove along the first direction, thereby realizing the mounting of the expansion beam relative to the box body. In this way, the mounting convenience of the expansion beam can be improved, and the application requirements of the box body in some cases (i.e., the case where the elasticity of the box body is poor and difficult to deform) can be met.

[0011] In one of the embodiments, the expansion beam body has a receiving groove; the mounting portion is connected to the groove wall of the receiving groove through the elastic portion; and part of the elastic portion and the mounting portion is located in the receiving groove.

[0012] In this way, part of the mounting portion is inserted into the receiving groove, and part of the mounting portion is inserted into the limiting groove. When the battery monomer expands and exerts an expansion force along the third direction on the expansion beam, the expansion force can act on and be borne by the mounting portion, thereby improving the effect of the expansion beam resisting the expansion force along the third direction.

[0013] In one of the embodiments, the limiting structure is protruded from the outer surface of the box body along the first direction. In this way, while avoiding the limiting structure occupying the internal space of the box body, the size of the internal limiting groove of the limiting structure can be increased, and the connection stability of the expansion beam and the box body can be improved.

[0014] In one of the embodiments, the box body comprises two limiting structures, which are respectively arranged on opposite sides of the box body along the first direction. The expansion beam comprises two mounting structures corresponding to the two limiting structures, which are arranged on opposite sides of the expansion beam body along the first direction. At least part of the mounting structure is inserted into the corresponding limiting structure.

[0015] In this way, at least part of the mounting structure on one side is inserted into the limiting structure on one side, and at least part of the mounting structure on the other side is inserted into the limiting structure on the other side. The movement of the mounting structure on one side along the second direction and the third direction can be limited by the limiting structure on one side, and the movement of the mounting structure on the other side along the second direction and the third direction can be limited by the limiting structure on the other side. In this way, the stability of the expansion beam being limited to the box body can be improved, and the reliability of the battery device can be improved.

[0016] In one of the embodiments, the battery device further comprises a cover connected to one side of the box body along the second direction to close the opening of the accommodating cavity. The expansion beam further comprises a connecting structure connected to one side of the expansion beam body along the second direction and connected between the box body and the cover along the second direction.

[0017] The cover can be used to close one end opening of the accommodating cavity, thereby protecting the battery cell well and improving the reliability of the battery device. In addition, the connection stability between the expansion beam and the box body and between the expansion beam and the cover can be improved, thereby improving the reliability of the battery device.

[0018] In one of the embodiments, the battery device further comprises a plurality of connecting members, the box body is provided with a plurality of first connecting holes corresponding to the plurality of connecting members, the cover is provided with a plurality of second connecting holes corresponding to the plurality of first connecting holes, and the connecting structure is provided with a plurality of third connecting holes corresponding to the connecting members. The connecting members are arranged in the corresponding first connecting holes, the corresponding second connecting holes and the corresponding third connecting holes to connect the connecting structure between the box body and the cover along the second direction.

[0019] In this way, the box body, the expansion beam and the cover can be connected together by the plurality of connecting members, thereby improving the reliability of the battery device better.

[0020] In one of the embodiments, the part of the expansion beam inserted into the limiting structure is bonded to the inner wall of the limiting structure.

[0021] Before the expansion beam is assembled in the box body, the adhesive can be arranged on the inner wall of the limiting structure, thereby bonding the part of the expansion beam inserted into the limiting structure to the inner wall of the limiting structure, thereby facilitating the stable installation of the expansion beam in the box body.

[0022] According to the second aspect of the present application, a power consuming device is provided, which comprises the battery device of any of the above embodiments.

[0023] The above description is only a summary of the technical solutions of the present application. In order to make the technical solutions of the present application more clearly understood and implemented, and to make the above and other purposes, features and advantages of the present application more obvious, the following detailed description of the specific embodiments of the present application is provided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments and are not to be considered as limiting of the present application. Moreover, in the drawings, like reference numerals refer to similar components throughout the several views. In the drawings:

[0025] Figure 1A structural schematic diagram of a vehicle according to an embodiment of the present application is shown.

[0026] Figure 2 A structural schematic diagram of a battery device according to an embodiment of the present application is shown.

[0027] Figure 3 A structural schematic diagram of a box body and an expansion beam according to an embodiment of the present application is shown.

[0028] Figure 4 An exploded schematic diagram of a box body and an expansion beam according to an embodiment of the present application is shown.

[0029] Figure 5 A cross-sectional structural schematic diagram of a box body and an expansion beam according to an embodiment of the present application is shown.

[0030] Figure 6 A cross-sectional structural schematic diagram of an expansion beam according to an embodiment of the present application is shown.

[0031] Figure 7 A cross-sectional structural schematic diagram of a box body and an expansion beam according to another embodiment of the present application is shown.

[0032] Figure 8 A structural schematic diagram of an expansion beam according to an embodiment of the present application is shown.

[0033] Reference signs: 1, vehicle; 10, battery device; 100, box body; 110, box main body; 120, limiting structure; 121, first limiting surface; 122, second limiting surface; 123, third limiting surface; 200, expansion beam; 210, expansion beam main body; 220, mounting structure; 221, mounting portion; 2211, first abutting surface; 2212, second abutting surface; 2213, third abutting surface; 222, elastic portion; 230, connecting structure; X, limiting groove; Q, accommodating cavity; Q1, sub-accommodating cavity; S, receiving groove; S1, groove bottom wall; S2, groove opening; S3, groove side wall; K1, first connecting hole; K2, second connecting hole; 300, cover body; 20, motor; 30, controller; F1, first direction; F2, second direction; F3, third direction. DETAILED DESCRIPTION

[0034] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways beyond the specific embodiments described and illustrated herein, and it is therefore intended that the present application not be limited to the embodiments. It will be apparent to those skilled in the art that certain modifications can be made to the specific embodiments, and still the present application can achieve the same objects without departing from the spirit and scope of the present application.

[0035] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0036] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0037] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] It is to be noted that if an element is referred to as being "fixed to" or "attached to" another element, it can be directly on the other element or intervening elements can also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms are used for explanation only and are not intended to be limiting.

[0040] In the related art, the connection between the expansion beam and the box body is usually achieved by welding or threaded fastening. The welding process is relatively complex, and the fasteners in the threaded fastening can be loosened due to untwisting during use of the battery device.

[0041] To solve the problem of complex connection structure and poor stability between the expansion beam and the box body, the application designs a battery device and an electric device, which positions the expansion beam on the box body by plug-in connection, thereby improving the installation convenience and stability of the expansion beam.

[0042] The battery device disclosed in the embodiments of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited thereto. The electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship and a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric aircraft toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc. The power supply system of the electric device can be composed of the battery device disclosed in the application, so as to provide power driving for the electric device and improve the service life of the electric device.

[0043] Figure 1 A structural schematic diagram of a vehicle 1 is shown, which can be a fuel car, a gas car or a new energy car. The new energy car can be a pure electric car, a hybrid car or a range-extended car, etc. The vehicle 1 is internally provided with a battery device 10. For example, the battery device 10 can be arranged at the bottom, the front or the tail of the vehicle 1. The battery device 10 can be used for power supply of the vehicle 1. For example, the battery device 10 can be used as an operating power source of the vehicle 1, which is used for the circuit system of the vehicle 1, such as the working power demand of the vehicle 1 during starting, navigation and running. In another embodiment of the application, the battery device 10 can not only be used as an operating power source of the vehicle 1, but also be used as a driving power source of the vehicle 1, which replaces or partially replaces fuel or natural gas to provide driving force for the vehicle 1.

[0044] The interior of the vehicle 1 can also be provided with a motor 20 and a controller 30 for controlling the power supply of the motor 20 by the battery device 10, for example, for the power demand of the vehicle 1 during starting, navigation and driving.

[0045] Figure 2 A structural schematic diagram of the battery device 10 of an embodiment of the present application is shown. Figure 3 A structural schematic diagram of the box body 100 and the expansion beam 200 of an embodiment of the present application is shown, Figure 4 An exploded schematic diagram of the box body 100 and the expansion beam 200 of an embodiment of the present application is shown.

[0046] Please refer to Figures 2-4 An embodiment of the present application provides a battery device 10, comprising a box body 100, an expansion beam 200 and a battery cell (not shown in the figure).

[0047] The box body 100 comprises a box main body 110 and at least one limiting structure 120, and the limiting structure 120 is arranged on at least one side of the box main body 110 along a first direction F1.

[0048] The box main body 110 refers to a part of the box body 100 for accommodating part of the expansion beam 200 and the battery cell.

[0049] The limiting structure 120 refers to a structure arranged on one side of the box main body 110 along the first direction F1, and the limiting structure 120 is used to limit the movement of the expansion beam 200 along a second direction F2 and a third direction F3. The limiting structure 120 can be a protruding structure protruding from the box main body 110 along the first direction F1.

[0050] The limiting structure 120 can be arranged on one side of the box main body 110 along the first direction F1, or the limiting structure 120 can be arranged on opposite sides of the box main body 110 along the first direction F1 respectively.

[0051] The box main body 110 has a receiving cavity Q opening along the second direction F2. The expansion beam 200 is arranged in the receiving cavity Q, the expansion beam 200 extends along the first direction F1, and at least one end of the expansion beam 200 along the first direction F1 is inserted into the limiting structure 120.

[0052] The expansion beam 200 is limited in the box body 100 along the first direction F1, and one end of the expansion beam 200 along the first direction F1 is inserted into the limiting structure 120. The limiting structure 120 is used to limit the movement of the expansion beam 200 along the second direction F2 and the third direction F3, and the movement of the expansion beam 200 along the first direction F1 can be limited by the box main body 110 or the limiting structure 120.

[0053] The battery cell is arranged in the receiving cavity Q and located on one side of the expansion beam 200 along the third direction F3.

[0054] The number of battery cells can be one or multiple, and is not specifically limited herein.

[0055] The expansion beam 200 is located on one side of the battery cell along the third direction F3, can absorb the expansion force generated by the battery cell during expansion, and thus can improve the reliability of the battery device 10.

[0056] The first direction F1, the second direction F2, and the third direction F3 are perpendicular to each other.

[0057] For example, the first direction F1 is parallel to one of the length direction of the box body 100 and the width direction of the box body 100, the third direction F3 is parallel to the other one of the length direction of the box body 100 and the width direction of the box body 100, and the second direction F2 is parallel to the thickness direction of the bottom wall of the box body 110.

[0058] During installation of the expansion beam 200 into the box body 110, one end of the expansion beam 200 along the first direction F1 can be inserted into the limiting structure 120, and thus the expansion beam 200 can be limited in the box body 110 along the first direction F1, the second direction F2, and the third direction F3, simplifying the process flow of installation of the expansion beam 200 relative to the box body 110, improving the convenience of installation, avoiding the risk of back-off that may occur when using threaded connection, and effectively improving the installation stability of the expansion beam 200.

[0059] In addition, in combination with the battery cell arranged in the box body 110, the installation requirements of the battery cell can be met, the reliability of the battery device 10 can be improved, and other ways of installing the expansion beam 200 such as welding or bolt connection can be omitted (in the welding process of the related art, the expansion beam usually needs to be partially thickened, which will cause an increase in the weight of the battery device, and the bolt will also cause an increase in the weight of the battery device), and thus it is conducive to reducing the weight of the battery device 10.

[0060] In some embodiments, the limiting structure 120 has a limiting groove X (as shown in Figure 7 The limiting groove X is in communication with the accommodating cavity Q and extends along the first direction F1. Part of the expansion beam 200 is inserted into the limiting groove X, and at least one of the box body 110 and the expansion beam 200 can elastically deform along the first direction F1, so as to install and connect between the expansion beam 200 and the box body 110.

[0061] The accommodating cavity Q refers to a cavity on the box body 110 for accommodating the battery cell and part of the expansion beam 200.

[0062] The limiting groove X refers to a groove on the limiting structure 120 in communication with the accommodating cavity Q, and the limiting groove X is used for inserting one end of the expansion beam 200 along the first direction F1.

[0063] The box body 110 can be elastic, for example, the box body 110 is a sheet metal part or the material of the box body 110 is a material that can make the box body 110 have better elasticity. Generally, the box body 110 formed by sheet metal stamping can have better elasticity.

[0064] The mounting structure 220 can also be elastic, the mounting structure 220 can include an elastic part 222, or the material of the mounting structure 220 is selected to make the mounting structure 220 have better elasticity, for example, the mounting structure 220 is a sheet metal part.

[0065] The box body 110 can also be elastic, and the mounting structure 220 is elastic.

[0066] Regardless of the way, one of the box body 110 and the mounting structure 220 that has elasticity can be deformed, so that at least part of the mounting structure 220 is inserted into the limiting structure 120.

[0067] As shown in Figure 4 and Figure 5 The expansion beam 200 includes an expansion beam body 210 and a mounting structure 220, the expansion beam body 210 extends along the first direction F1, and the expansion beam body 210 is provided with the mounting structure 220 on at least one side along the first direction F1, and at least part of the mounting structure 220 is inserted into the limiting structure 120.

[0068] The expansion beam body 210 refers to the part of the expansion beam 200 that is limited in the box body 110 along the first direction F1.

[0069] The mounting structure 220 refers to a structure that can be at least partially inserted into the limiting structure 120.

[0070] The expansion beam body 210 can be provided with the mounting structure 220 on one side along the first direction F1, or the expansion beam body 210 can be provided with the mounting structure 220 on opposite sides along the first direction F1 respectively.

[0071] By inserting at least part of the mounting structure 220 into the limiting structure 120, the movement of the expansion beam 200 along the second direction F2 and the third direction F3 can be limited by the limiting structure 120, in combination with the expansion beam body 210 being limited in the box body 110 along the first direction F1, and the expansion beam body 210 being provided with the mounting structure 220 on at least one side along the first direction F1, therefore, the expansion beam 200 can be limited in the box body 100 along the first direction F1, in this way, the stability of the expansion beam 200 installed in the box body 100 can be improved, thereby improving the reliability of the battery device 10, while also reducing the weight of the battery device 10.

[0072] In some embodiments, the mounting structure 220 comprises a mounting portion 221 and an elastic portion 222, the mounting portion 221 is connected with the expansion beam body 210 through the elastic portion 222, and at least part of the mounting portion 221 is inserted into the limiting groove X.

[0073] The mounting portion 221 is a part of the mounting structure 220 for being at least partially inserted into the limiting structure 120.

[0074] The elastic portion 222 is a part of the mounting structure 220 with elasticity, and the elastic portion 222 can be a spring.

[0075] Part of the mounting portion 221 can be inserted into the limiting structure 120. Alternatively, the whole mounting portion 221 can be inserted into the limiting structure 120.

[0076] In some embodiments, the elastic portion 222 is arranged to be retractable along the first direction F1.

[0077] In this way, by arranging the elastic portion 222 to be retractable along the first direction F1, the mounting portion 221 can be linearly moved along the first direction F1 under the elastic restoring force of the elastic portion 222, so as to be inserted into the limiting structure 120 along the first direction F1, thereby improving the mounting reliability of the mounting structure 220 inserted into the limiting structure 120.

[0078] In use, the elastic portion 222 can be compressed along the first direction F1, so that at least part of the mounting portion 221 can be inserted into the limiting groove X along the first direction F1, thereby realizing the mounting of the expansion beam 200 relative to the box body 110. In this way, the mounting convenience of the expansion beam 200 can be improved, and the application requirements of the box body 110 in some cases (i.e., the case that the elasticity of the box body 110 is poor and difficult to deform) can be met.

[0079] In some embodiments, as shown in Figure 5 , the expansion beam body 210 and the mounting structure 220 are integrally formed.

[0080] In this way, the integrity and structural stability of the expansion beam 200 can be improved, and the manufacturing and assembly efficiency of the expansion beam 200 can be improved.

[0081] It should be noted that in the case that the box body 110 has good elasticity, the expansion beam body 210 and the mounting structure 220 can be integrally formed.

[0082] In some embodiments, as shown in Figure 4 and Figure 6 , the expansion beam body 210 has a receiving groove S for receiving the mounting structure 220, the mounting portion 221 is connected with the groove wall of the receiving groove S through the elastic portion 222, and part of the elastic portion 222 and the mounting portion 221 is located in the receiving groove S.

[0083] In use, a part of the mounting portion 221 is inserted into the receiving groove S and a part is inserted into the limiting groove X, when the battery monomer expands and exerts an expansion force on the expansion beam 200 along the third direction F3, the expansion force can act on and be borne by the mounting portion 221, thereby improving the effect of the expansion beam 200 resisting the expansion force along the third direction F3.

[0084] In addition, the elastic portion 222 can also be compressed so that the mounting portion 221 and the elastic portion 222 are both received in the receiving groove S, facilitating the expansion beam 200 to be arranged in the box body 110 along the first direction F1. In this process, the mounting portion 221 and the elastic portion 222 are always received in the receiving groove S under the limiting of the two side walls of the expansion beam body 210 arranged opposite along the first direction F1, when the expansion beam 200 is displaced to the height of the limiting structure 120 along the second direction F2, the mounting portion 221 can be inserted into the limiting structure 120 under the action of the elastic restoring force of the elastic portion 222, so that the installation convenience of the expansion beam 200 can be improved, and the application requirement of the box body 110 in some cases (such as the case that the elasticity of the box body 110 is poor and difficult to deform, for example, the box body 110 adopts a profile, for example, the box body 110 adopts an aluminum alloy profile) can be met.

[0085] The receiving groove S is a groove on the expansion beam body 210 for receiving the mounting structure 220.

[0086] In some embodiments, as shown in Figure 6 The receiving groove S has a groove bottom wall S1 and a groove opening S2 arranged opposite along the first direction F1, and a groove side wall S3 between the groove bottom wall S1 and the groove opening S2, and the groove side wall S3 is arranged around the axis direction of the groove opening S2.

[0087] The cross section of the receiving groove S perpendicular to the first direction F1 can be rectangular.

[0088] The groove side wall S3 can be arranged around the axis direction of the groove opening S2.

[0089] It can be understood that the groove side wall S3 is arranged extending along the first direction F1, and in the process that the mounting portion 221 is inserted into the limiting structure 120 under the action of the elastic restoring force of the elastic portion 222, the groove side wall S3 can play a guiding role, so that the mounting portion 221 can be better inserted into the limiting structure 120 along the first direction F1, and the installation reliability of the mounting structure 220 inserted into the limiting structure 120 can be improved.

[0090] In some embodiments, as shown in Figure 7As shown, the limiting structure 120 includes a first limiting surface 121 perpendicular to the second direction F2, and the mounting structure 220 includes a first abutting surface 2211. The first limiting surface 121 is configured to surround the limiting slot X. In a direction from the top of the box body 110 to the bottom of the box body 110, the first limiting surface 121 is located on one side of the first abutting surface 2211.

[0091] In this embodiment, the first abutting surface 2211 is formed on the mounting portion 221.

[0092] The first limiting surface 121 refers to a surface on the limiting structure 120 for limiting on one side of the first abutting surface 2211.

[0093] The first abutting surface 2211 refers to a surface on the mounting structure 220 for abutting with the first limiting surface 121.

[0094] In this way, in a direction from the top of the box body 110 to the bottom of the box body 110, the first limiting surface 121 is located on one side of the first abutting surface 2211, and the movement of the mounting structure 220 along the second direction F2 can be well limited by the limiting structure 120.

[0095] In some embodiments, as shown, the limiting structure 120 is protruded from the outer surface of the box body 110 along the first direction F1. In this way, while avoiding occupying the internal space of the box body 110, the size of the limiting slot X inside the limiting structure 120 can be increased, and the connection stability of the expansion beam 200 and the box body 110 can be improved. Figure 7

[0096] In other embodiments, the limiting structure 120 includes a second limiting surface 122 parallel to the third direction F3 and arranged at an angle with respect to the first direction F1 and the second direction F2. The second limiting surface 122 is configured to surround the limiting slot X. As shown, the mounting structure 220 includes a second abutting surface 2212. In a direction from the limiting structure 120 to the box body 110, the second limiting surface 122 is located on one side of the second abutting surface 2212. Figure 8

[0097] In this embodiment, the second abutting surface 2212 is formed on the mounting portion 221.

[0098] The second limiting surface 122 refers to a surface on the limiting structure 120 for limiting on one side of the second abutting surface 2212.

[0099] The second abutting surface 2212 refers to a surface on the mounting structure 220 for abutting with the second limiting surface 122.

[0100] ​​Since the second limiting surface 122 is parallel to the third direction F3 and is arranged at an angle with respect to the first direction F1 and the second direction F2 respectively, the second limiting surface 122 and the second abutting surface 2212 are both inclined surfaces, which facilitates the insertion of at least part of the mounting structure 220 into the limiting structure 120 and allows the mounting structure 220 to be limited in the box body 100 along the first direction F1.

[0101] In some embodiments, as shown in Figure 4 The limiting structure 120 includes two third limiting surfaces 123 arranged at intervals along the third direction F3, and the third limiting surfaces 123 are used to surround the limiting groove X. Along the third direction F3, the mounting structure 220 is limited between the two third limiting surfaces 123.

[0102] Optionally, the third limiting surface 123 is perpendicular to the third direction F3, and the mounting structure 220 is provided with two third abutting surfaces 2213, and along the third direction F3, the third limiting surface 123 is correspondingly limited on one side of the third abutting surface 2213. In this embodiment, the third abutting surface 2213 is formed on the mounting portion 221.

[0103] The third limiting surface 123 refers to the surface on the limiting structure 120 for limiting the mounting structure 220 between the two third limiting surfaces 123.

[0104] The third abutting surface 2213 refers to the surface on the mounting structure 220 for abutting the third limiting surface 123 along the third direction F3.

[0105] In this way, the mounting structure 220 can be well limited between the two third limiting surfaces 123, and the movement of the mounting structure 220 along the third direction F3 can be well limited by the limiting structure 120.

[0106] In some embodiments, as shown in Figure 4 and Figure 5 The box body 100 includes two limiting structures 120, and the two limiting structures 120 are respectively arranged on opposite sides of the box body 110 along the first direction F1. The expansion beam 200 includes two mounting structures 220 corresponding to the two limiting structures 120, and the two mounting structures 220 are arranged on opposite sides of the expansion beam body 210 along the first direction F1. At least part of the mounting structure 220 is inserted into the corresponding limiting structure 120.

[0107] At least part of the mounting structure 220 on one side is inserted into the limiting structure 120 on one side, and at least part of the mounting structure 220 on the other side is inserted into the limiting structure 120 on the other side. The movement of the mounting structure 220 on one side along the second direction F2 and the third direction F3 can be limited by the limiting structure 120 on one side, and the movement of the mounting structure 220 on the other side along the second direction F2 and the third direction F3 can be limited by the limiting structure 120 on the other side. In this way, the stability of the expansion beam 200 limited to the box body 100 can be improved, and the reliability of the battery device 10 can be improved.

[0108] In some embodiments, as shown in Figure 2 The battery device 10 further includes a cover 300 connected to one side of the box body 110 along the second direction F2 to close the opening of the accommodation cavity Q. As shown in Figure 5 The expansion beam 200 further includes a connecting structure 230 connected to one side of the expansion beam body 210 along the second direction F2 and connected between the box body 110 and the cover 300 along the second direction F2.

[0109] The cover 300 refers to a component on the battery device 10 for closing the opening of one end of the accommodation cavity Q.

[0110] The accommodation cavity Q refers to a cavity on the box body 110 for accommodating the battery monomer and part of the expansion beam 200.

[0111] The opening of one end of the accommodation cavity Q can be closed by the cover 300, thereby protecting the battery monomer well, and improving the reliability of the battery device 10. The connecting structure 230 refers to a structure on the expansion beam 200 connected between the box body 110 and the cover 300.

[0112] The connecting structure 230 can be L-shaped, and two connecting structures 230 can be provided and spaced apart along the first direction F1.

[0113] In this way, the connection stability between the expansion beam 200 and the box body 100, and between the expansion beam 200 and the cover 300 can be improved, and the reliability of the battery device 10 can be improved.

[0114] In some embodiments, as shown in Figure 5 The expansion beam body 210, the mounting structure 220, and the connecting structure 230 are integrally formed.

[0115] In this way, the manufacturing and assembly efficiency of the expansion beam 200 can be improved.

[0116] In some embodiments, the battery device 10 further comprises a plurality of connecting members (not shown in the figures), the box body 110 is provided with a plurality of first connecting holes K1 corresponding to the plurality of connecting members, the cover body 300 is provided with a plurality of second connecting holes K2 corresponding to the plurality of first connecting holes K1, and the connecting structure 230 is provided with a plurality of third connecting holes (not shown in the figures) corresponding to the connecting members. The connecting members are arranged in the corresponding first connecting holes K1, the corresponding second connecting holes K2 and the corresponding third connecting holes, so that the connecting structure 230 is connected between the box body 110 and the cover body 300 along the second direction F2.

[0117] The connecting member refers to a component for penetrating the corresponding first connecting hole K1, the corresponding second connecting hole K2 and the corresponding third connecting hole. The connecting member can be a bolt, and the first connecting hole K1, the second connecting hole K2 and the third connecting hole are all threaded holes corresponding to the bolt.

[0118] The first connecting hole K1 is a hole on the box body 110 for the connecting member to penetrate.

[0119] The second connecting hole K2 is a hole on the cover body 300 for the connecting member to penetrate.

[0120] The third connecting hole is a hole on the connecting structure 230 for the connecting member to penetrate.

[0121] The plurality of first connecting holes K1 can be arranged at intervals around the accommodation cavity Q, and the plurality of second connecting holes K2 can be arranged at intervals around the accommodation cavity Q.

[0122] It can be that part of the connecting members are connected to the hole walls of the corresponding first connecting holes K1, the hole walls of the corresponding second connecting holes K2 and the hole walls of the corresponding third connecting holes, and the other part of the connecting members are connected to the hole walls of the corresponding first connecting holes K1 and the hole walls of the corresponding second connecting holes K2.

[0123] In this way, the box body 110, the expansion beam 200 and the cover body 300 can be connected together by using the plurality of connecting members, thereby better improving the reliability of the battery device 10.

[0124] In some embodiments, the box body 110 and the limiting structure 120 are an integrally formed structure.

[0125] In this way, the number of parts of the battery device 10 can be reduced, thereby improving the assembly efficiency of the battery device 10, and also improving the strength and manufacturing efficiency of the box body 100.

[0126] In some embodiments, the expansion beam 200 divides the accommodation cavity Q into two sub-accommodation cavities Q1 arranged at intervals along the third direction F3, and the battery device 10 comprises two groups of battery monomer groups corresponding to the two sub-accommodation cavities Q1. The battery monomer group is arranged in the corresponding sub-accommodation cavity Q1 and comprises a plurality of battery monomers.

[0127] The sub- accommodating cavity Q1 is separated from the accommodating cavity Q, and can be defined by the cavity wall of the accommodating cavity Q and the expansion beam 200.

[0128] The sub- accommodating cavity Q1 can correspond to the battery monomer group one by one.

[0129] In this way, the expansion beam 200 is arranged at the middle part of the box body 110, which is beneficial to improve the structural strength of the box body 110; and the expansion beam 200 can resist the expansion of the battery monomers of the two groups of battery monomer groups in the working process, which is beneficial to improve the service life of the battery monomers.

[0130] In other embodiments, the battery device 10 includes two expansion beams 200 and a plurality of battery monomers, and all the battery monomers are limited between the two expansion beams 200 along the third direction F3.

[0131] In this way, the two expansion beams 200 can better absorb the expansion force generated in the expansion process of the battery monomers, thereby being beneficial to improve the reliability of the battery device 10.

[0132] In some embodiments, the part of the expansion beam 200 inserted into the limiting structure 120 is bonded to the inner wall of the limiting structure 120.

[0133] Before the expansion beam 200 is assembled in the box body 110, an adhesive can be arranged on the inner wall of the limiting structure 120, so that the part of the expansion beam 200 inserted into the limiting structure 120 is bonded to the inner wall of the limiting structure 120, thereby being beneficial to more stably install the expansion beam 200 in the box body 110. The adhesive can be a curable glue or double-sided adhesive tape, etc.

[0134] An embodiment of the present application provides a power consumption device, which includes the battery device 10 of any of the above embodiments.

[0135] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0136] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A battery device, characterized in that: include: A box body (100) comprises a box body (110) and at least one limiting structure (120); the limiting structure (120) is provided on at least one side of the box body (110) along a first direction (F1); the box body (110) has a receiving cavity (Q) opening along a second direction (F2); the limiting structure (120) has a limiting groove (X), the limiting groove (X) is connected to the receiving cavity (Q), and the limiting groove (X) extends along the first direction (F1); an expansion beam (200) disposed in the accommodating cavity (Q), the expansion beam (200) extending along the first direction (F1), and at least one end of the expansion beam (200) along the first direction (F1) being inserted into the limiting groove (X); and A battery cell is disposed in the accommodating cavity (Q) and is located on one side of the expansion beam (200) along the third direction (F3); At least one of the box body (110) and the expansion beam (200) is capable of generating elastic deformation along the first direction (F1); and the first direction (F1), the second direction (F2), and the third direction (F3) are perpendicular to each other.

2. The battery device according to claim 1, wherein: The expansion beam (200) comprises an expansion beam body (210) and a mounting structure (220); The expansion beam body (210) extends along the first direction (F1); the mounting structure (220) comprises a mounting portion (221) and an elastic portion (222); the mounting portion (221) is connected to the expansion beam body (210) via the elastic portion (222); the elastic portion (222) is telescopically arranged along the first direction (F1); and at least a portion of the mounting portion (221) is inserted into the limiting groove (X).

3. The battery device according to claim 2, characterized in that The expansion beam body (210) has a receiving groove (S); the mounting portion (221) is connected to a groove wall of the receiving groove (S) via the elastic portion (222); and portions of the elastic portion (222) and the mounting portion (221) are located within the receiving groove (S).

4. The battery device according to claim 1, wherein: The box body (110) and the limiting structure (120) are an integrally formed structure.

5. The battery device according to claim 1, wherein: The limiting structure (120) is protruding from the outer surface of the box body (110) along the first direction (F1).

6. The battery device according to claim 2 or 3, characterized in that: The box body (100) comprises two limiting structures (120), and the two limiting structures (120) are respectively arranged on two opposite sides of the box body (110) along the first direction (F1); The expansion beam (200) comprises two mounting structures (220) corresponding one-to-one to the two limiting structures (120), and the two mounting structures (220) are arranged on opposite sides of the expansion beam body (210) along the first direction (F1); At least a portion of the mounting structure (220) is inserted into the corresponding limiting structure (120).

7. The battery device according to claim 2 or 3, characterized in that: The battery device also includes a cover (300); The cover (300) is connected to one side of the box body (110) along the second direction (F2) to close the opening of the accommodating cavity (Q); The expansion beam (200) further includes a connection structure (230); The connection structure (230) is connected to one side of the expansion beam body (210) along the second direction (F2), and is connected between the box body (110) and the cover body (300) along the second direction (F2).

8. The battery device according to claim 7, characterized in that The battery device further includes a plurality of connectors; The box body (110) is provided with a plurality of first connection holes (K1) corresponding to the plurality of connection members; The cover body (300) is provided with a plurality of second connection holes (K2) corresponding to the plurality of first connection holes (K1); The connection structure (230) is provided with a plurality of third connection holes adapted to the connection member; The connecting member is passed through the corresponding first connecting hole (K1), the corresponding second connecting hole (K2), and the corresponding third connecting hole, so that the connecting structure (230) is connected between the box body (110) and the cover body (300) along the second direction (F2).

9. The battery device according to any one of claims 1 to 5, characterized in that: The portion of the expansion beam (200) inserted into the limiting structure (120) is bonded to the inner wall of the limiting structure (120).

10. An electrical device, characterized in that: A battery device comprising the battery device according to any one of claims 1 to 9.

Images