Battery pack tray, battery pack and electrical equipment

Abstract

This invention discloses a battery pack tray, a battery pack, and an electrical device. The battery pack tray includes a tray frame and multiple lifting lugs. The tray frame surrounds a receiving cavity. In a first direction, the tray frame includes two oppositely arranged side frames. The multiple lifting lugs are respectively arranged on opposite sides of the tray frame in the first direction, and the lifting lugs are connected to the side walls of the side frames away from the receiving cavity. Therefore, by designing the lifting lugs as independently formed, the lugs can be designed individually, improving the design flexibility of the battery pack tray, facilitating lightweight design, improving the modal characteristics of the battery pack tray, and enhancing the vibration stress resistance of the lifting lugs, thus demonstrating strong practicality.

Description

Technical Field

[0001] This invention relates to the field of batteries, and more particularly to a battery pack tray, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, battery pack trays are equipped with crossbeams and tray lifting lugs, which are integrated into one piece for easy installation. However, the flexible design of the lifting lug cross-section is limited, requiring consideration of the crossbeam cross-section. Furthermore, to meet the stiffness design requirements of the lifting lug cross-section, the crossbeam may be over-designed. Moreover, the lifting lug design cannot be replicated for other trays, lacking versatility and leaving room for improvement. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a battery pack tray with independently designed lifting lugs, which offers high design flexibility, facilitates lightweight design of the battery pack tray, improves the modal characteristics of the battery pack tray, and enhances the vibration stress resistance level of the lifting lugs, making it highly practical.

[0004] According to an embodiment of the present invention, a battery pack tray includes: a tray frame surrounding a receiving cavity, the tray frame including two oppositely disposed side frames in a first direction; and a plurality of lifting lugs respectively disposed on opposite sides of the tray frame in the first direction, the lifting lugs being connected to the side walls of the side frames opposite to the receiving cavity.

[0005] According to the battery pack tray of the present invention, by setting the lifting lugs to be independently molded, the lifting lugs can be designed separately, thereby improving the design flexibility of the battery pack tray, facilitating the lightweight design of the battery pack tray, thereby improving the modality of the battery pack tray, and making it easier to improve the vibration stress resistance level of the lifting lugs, which is highly practical.

[0006] According to some embodiments of the present invention, in the first direction, the lugs on opposite sides of the tray frame are symmetrically arranged.

[0007] According to some embodiments of the present invention, the battery pack tray has the lugs and the side frame welded together.

[0008] According to some embodiments of the present invention, the battery pack tray includes a lifting lug and a sleeve portion. A through mounting hole is formed in the main body portion. At least a portion of the sleeve portion passes through the mounting hole and is fixedly connected to the main body portion along the circumference of the sleeve portion. The main body portion is fixedly connected to the side frame.

[0009] According to some embodiments of the present invention, in the battery pack tray, the lugs are symmetrically formed in the second direction, and the first direction, the second direction, and the axial direction of the mounting hole are arranged perpendicularly to each other.

[0010] According to some embodiments of the present invention, the battery pack tray has a plurality of cavities inside the lug.

[0011] According to some embodiments of the present invention, the battery pack tray includes a main body comprising a top plate, a middle plate, and a bottom plate arranged parallel to each other at axial intervals in the mounting holes. The top plate is connected to the middle plate via a first connecting plate to define a first chamber, and the bottom plate is connected to the middle plate via a second connecting plate to define a second chamber.

[0012] According to some embodiments of the present invention, in a battery pack tray, the dimension of the top plate along the second direction is smaller than the dimension of the middle plate along the second direction, and the dimension of the middle plate along the second direction is equal to the dimension of the bottom plate along the second direction.

[0013] According to some embodiments of the battery pack tray of the present invention, the projection of the first chamber onto a plane perpendicular to the first direction is an isosceles trapezoid; and / or, the projection of the second chamber onto a plane perpendicular to the first direction is a rectangle.

[0014] According to some embodiments of the present invention, the battery pack tray further includes two first partitions spaced apart along the second direction. The two first partitions are symmetrically arranged about the center of the lug in the second direction. The first partitions extend axially along the mounting hole and are used to separate the first chamber and the second chamber.

[0015] According to some embodiments of the present invention, the battery pack tray has a main body portion with a dimension of L1 along the second direction and a main body portion with a dimension of H1 along the vertical direction, satisfying: 1.5≤L1 / H1≤3.0.

[0016] According to some embodiments of the present invention, in the battery pack tray, an included angle α1 is formed between the first connecting plate and the middle plate, satisfying: 40°≤α1≤70°.

[0017] According to some embodiments of the present invention, the battery pack tray has a spacing of L2 between the two first partitions along the second direction, which satisfies: 10mm≤L2≤30mm.

[0018] According to some embodiments of the present invention, the battery pack tray further includes a second partition located at the center of the body portion along the second direction, the second partition extending axially along the mounting hole and serving to separate the first chamber and the second chamber.

[0019] According to some embodiments of the present invention, the battery pack tray, the main body further includes a third partition, wherein the third partition is connected between the connection between the second partition and the middle plate and one side edge of the bottom plate along the second direction; and / or, the third partition is connected between the connection between the second partition and the middle plate and one side edge of the top plate along the second direction.

[0020] According to some embodiments of the present invention, the battery pack tray has a main body portion with a dimension of L1 along the second direction and a main body portion with a dimension of H1 along the axial direction of the mounting hole, satisfying: 1.5≤L1 / H1≤2.5.

[0021] According to some embodiments of the present invention, in the battery pack tray, an included angle α1 is formed between the first connecting plate and the middle plate, satisfying: 40°≤α1≤80°.

[0022] According to some embodiments of the present invention, in the battery pack tray, the first partition is connected to the outer wall of the sleeve portion; or, the second partition is connected to the outer wall of the sleeve portion.

[0023] According to some embodiments of the present invention, the main body and the sleeve portion of the battery pack tray are integrally formed.

[0024] The present invention also proposes a battery pack.

[0025] The battery pack according to embodiments of the present invention includes the battery pack tray according to any of the above embodiments.

[0026] The present invention also proposes an electrical device.

[0027] The electrical device according to embodiments of the present invention includes a battery pack according to any of the above embodiments.

[0028] The battery pack, the electrical device, and the battery pack tray have the same advantages over the prior art, which will not be repeated here.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a schematic diagram of a battery pack tray according to an embodiment of the present invention;

[0032] Figure 2 This is an exploded view of the battery pack tray according to an embodiment of the present invention;

[0033] Figure 3 This is an isometric view of the lifting lug according to Embodiment 1 of the present invention;

[0034] Figure 4 This is a front view of the lifting lug according to Embodiment 1 of the present invention;

[0035] Figure 5 This is an isometric view of the lifting lug according to Embodiment 2 of the present invention;

[0036] Figure 6 This is a front view of the lifting lug according to Embodiment 2 of the present invention.

[0037] Figure label:

[0038] Battery pack tray 100, first direction F1, second direction F2, mounting hole axial direction F3.

[0039] Tray frame 1, side frame 11, receiving cavity 12.

[0040] Lifting lug 2, main body 21, top plate 211, middle plate 212, bottom plate 213, first connecting plate 214, second connecting plate 215, first partition 216, second partition 217, third partition 218, sleeve 22, first chamber 23, second chamber 24. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Hereinafter, with reference to the accompanying drawings, a battery pack tray 100 according to an embodiment of the present invention will be described.

[0045] like Figures 1-6 As shown, the battery pack tray 100 according to an embodiment of the present invention includes: a tray frame 1 and a plurality of lugs 2. The tray frame 1 surrounds a receiving cavity 12. In a first direction F1, the tray frame 1 includes two side frames 11 disposed opposite to each other. The plurality of lugs 2 are respectively arranged on opposite sides of the tray frame 1 in the first direction F1. The lugs 2 are connected to the side wall of the side frame 11 away from the receiving cavity 12.

[0046] This facilitates the lightweight design of the battery pack tray 100, thereby improving the modality of the battery pack tray 100 and enhancing the vibration resistance of the lifting lug 2, making it highly practical.

[0047] First, such as Figures 1-2 As shown, the battery pack tray 100 includes a tray frame 1 and multiple lifting lugs 2. The tray frame 1 surrounds a receiving cavity 12, and the tray frame 1 includes two side frames 11, which are arranged opposite to each other in a first direction F1. It should be noted that the first direction F1 can be... Figure 1 The left and right directions shown can also be Figure 1 The front and back directions are shown.

[0048] Multiple lifting lugs 2 are divided into two groups. The two groups of lifting lugs 2 are respectively arranged on opposite sides of the pallet frame 1 along the first direction F1. Each group has multiple lifting lugs 2. The multiple lifting lugs 2 in the same group are spaced apart along the length direction of the side frame 11.

[0049] The lifting lug 2 and the side frame 11 can be designed as separate molded parts. The lifting lug 2 is attached to the side wall of the side frame 11 away from the receiving cavity 12 along the first direction F1 and is connected to the side frame 11, so that the lifting lug 2 can be used to fix the battery pack tray 100. Exemplarily, the lifting lug 2 can be welded to the side frame 11; or, the lifting lug 2 can be fixed to the side frame 11 by a fastener. The present invention does not limit this.

[0050] The above-described design allows for the independent design of the lifting lug 2, improving the design flexibility of the battery pack tray 100 and preventing over-design. For example, if the tray beam and lifting lug 2 are integrally formed, the tray beam might be over-designed to ensure the structure of the lifting lug 2 meets design requirements. Furthermore, the lifting lug 2 can be applied to different battery pack trays 100, offering good versatility.

[0051] According to an embodiment of the present invention, the battery pack tray 100 is provided with independently molded lifting lugs 2, which allows the lifting lugs 2 to be designed separately, thereby improving the design flexibility of the battery pack tray 100, facilitating the lightweight design of the battery pack tray 100, thereby improving the modality of the battery pack tray 100, and also making it easier to improve the vibration stress resistance level of the lifting lugs 2, which is highly practical.

[0052] In some embodiments of the present invention, such as Figure 1 As shown, the lifting lug 2 and the side frame 11 can be welded together. This arrangement improves the connection stability between the lifting lug 2 and the side frame 11, thereby enhancing the overall stability of the battery pack tray 100. It also simplifies the structure of the battery pack tray 100, facilitating lightweight design.

[0053] In some embodiments of the present invention, such as Figure 1 As shown, in the first direction F1, the lifting lugs 2 on opposite sides of the tray frame 1 are symmetrically arranged. This arrangement ensures that the mounting position of the battery pack tray 100 remains symmetrical, improving the installation stability of the battery pack tray 100 and reducing the difficulty of machining and positioning.

[0054] In some embodiments of the present invention, the lifting lug 2 includes a main body 21 and a sleeve 22. A through mounting hole is formed in the main body 21. At least a portion of the sleeve 22 passes through the mounting hole and is fixedly connected to the main body 21 along the circumference of the sleeve 22. The main body 21 is fixedly connected to the side frame 11.

[0055] For example, refer to Figures 3-4 As shown, the lifting lug 2 includes a main body 21 and a sleeve 22, which are separately formed. A mounting hole is formed within the main body 21, extending vertically through it. The sleeve 22 is tubular and matches the mounting hole. At least a portion of the sleeve 22 extends downwards into the mounting hole, and its outer peripheral wall is fixedly connected to the top of the main body 21 along its circumference, such as by welding. One side of the main body 21 along the first direction F1 is fixedly connected to the side frame 11 to mount the lifting lug 2 onto the tray frame 1. A mounting fastener is inserted into the sleeve 22 to fix the battery pack tray 100 at the mounting position.

[0056] The above settings can improve the structural strength of the lifting lug 2, enhance the supporting effect of the lifting lug 2 on the battery pack tray 100, and ensure the installation stability of the battery pack tray 100.

[0057] In some embodiments of the present invention, such as Figure 4 As shown, in the second direction F2, the lifting lug 2 can be configured as a symmetrically formed part, with the first direction F1, the second direction F2, and the axial direction F3 of the mounting hole arranged perpendicularly to each other. For example, the first direction F1 can be set as... Figure 4 The left and right directions are shown, and the second direction F2 is set as... Figure 1 The front and rear directions are shown, and the axial direction F3 of the mounting hole can be set as... Figure 1 The up and down directions are shown.

[0058] The above settings make the connection between the lug 2 and the side frame 11 more stable, ensuring the impact resistance of the lug 2 in different directions and improving the design rationality of the battery pack tray 100.

[0059] In some embodiments of the present invention, such as Figure 4 As shown, the lifting lug 2 has multiple cavities inside. This design improves the deformation resistance of the lifting lug 2 and reduces its weight, thus achieving a lightweight design for the battery pack tray 100.

[0060] In some embodiments of the present invention, the main body 21 includes a top plate 211, a middle plate 212 and a bottom plate 213 arranged in parallel at an axial F3 interval in the mounting holes. The top plate 211 is connected to the middle plate 212 through a first connecting plate 214 to define a first chamber 23, and the bottom plate 213 is connected to the middle plate 212 through a second connecting plate 215 to define a second chamber 24.

[0061] For example, refer to Figures 3-4 As shown, the main body 21 includes a top plate 211, a middle plate 212, and a bottom plate 213. The top plate 211, the middle plate 212, and the bottom plate 213 are aligned along the axial direction F3 of the mounting hole (reference). Figure 1 The top plate 211 is arranged in parallel at intervals along the vertical direction (as shown). The top plate 211 is connected to the corresponding side edges of the middle plate 212 via first connecting plates 214 on both sides along the second direction F2, thus defining a first chamber 23 between the top plate 211 and the middle plate 212. Simultaneously, the middle plate 212 is connected to the corresponding side edges of the bottom plate 213 via second connecting plates 215 on both sides along the second direction F2, thus defining a second chamber 24 between the middle plate 212 and the bottom plate 213. The first chamber 23 and the second chamber 24 are arranged sequentially along the axial direction F3 of the mounting holes. This arrangement improves the deformation resistance of the top plate 211, thereby enhancing the reliability of the battery pack tray 100.

[0062] In some embodiments of the present invention, such as Figures 3-4 As shown, the top plate 211 can be configured such that its dimension along the second direction F2 is smaller than that of the middle plate 212 along the second direction F2. A first connecting plate 214 extends downwards and outwards, with its upper end connected to the top plate 211 and its lower end connected to the middle plate 212, thus defining a trapezoidal first chamber 23 between the top plate 211 and the middle plate 212. Simultaneously, the middle plate 212 can be configured such that its dimension along the second direction F2 is equal to that of the bottom plate 213 along the second direction F2. A second connecting plate 215 extends downwards, with its upper end connected to the middle plate 212 and its lower end connected to the bottom plate 213, thus defining a rectangular second chamber 24 between the top plate 211 and the middle plate 212. This optimizes the structure of the lifting lug 2 and improves its reliability.

[0063] In some embodiments of the present invention, such as Figure 4 As shown, the projection of the first chamber 23 onto the plane perpendicular to the first direction F1 can be set as an isosceles trapezoid. This allows for further optimization of the structure of the lifting lug 2, thereby improving its reliability.

[0064] In some embodiments of the present invention, such as Figure 4 As shown, the projection of the second chamber 24 onto the plane perpendicular to the first direction F1 can be set as a rectangle. This allows for further optimization of the structure of the lifting lug 2, thereby improving its reliability.

[0065] In some embodiments of the present invention, such as Figures 3-4 As shown, the main body 21 may also include two first partitions 216. The two first partitions 216 are spaced apart along the second direction F2 and are symmetrically arranged about the middle of the lug 2 in the second direction F2. The first partitions 216 extend along the axial direction F3 of the mounting hole. The first partitions 216 pass through the middle plate 212 and are connected to the top plate 211 and the bottom plate 213 at both ends, so that the first partitions 216 can be used to separate the first chamber 23 and the second chamber 24.

[0066] The above configuration allows for further separation of the first chamber 23 and the second chamber 24, ensuring the deformation resistance of the lug 2 and improving the design rationality of the battery pack tray 100.

[0067] Simulation results show that the first-order mode of the battery pack, where the tray beam and lifting lug 2 are integrally formed, is 66.1Hz. Figure 3 The first-order mode of the battery pack shown in the lifting lug 2 is 69.1Hz, an improvement of 3.0Hz, thereby increasing the overall stiffness of the battery pack; it has Figure 3 The 3σ stress of key components within the battery pack of the lifting lug 2 shown is lower than that of the battery pack where the tray beam and lifting lug 2 are integrally formed, thus improving the fatigue durability of the battery pack; it has Figure 3 The battery pack of the lifting lug 2 shown is lighter than that of the battery pack in which the tray beam and the lifting lug 2 are integrally formed, achieving a weight reduction rate of 68.6%. This allows for a lightweight design of the battery pack tray 100, while simultaneously improving the rigidity of the lifting lug 2 and the battery pack modes, and reducing vibration stress levels.

[0068] In some embodiments of the present invention, such as Figure 4 As shown, the dimension of the main body 21 along the second direction F2 can be set as L1, and the dimension of the main body 21 along the axial direction F3 of the mounting hole can be set as H1, satisfying: 1.5≤L1 / H1≤3.0. That is, the ratio of the dimension L1 of the main body 21 along the second direction F2 to the dimension H1 of the main body 21 along the axial direction F3 of the mounting hole can be taken as 1.5, 1.7, 1.8, 2, 2.2, 2.5, 2.8, 3, etc. Therefore, the structure of the main body 21 can be optimized, improving the structural stability of the lifting lug 2.

[0069] In some embodiments of the present invention, such as Figure 4 As shown, an included angle α1 can be formed between the first connecting plate 214 and the middle plate 212, satisfying: 40°≤α1≤70°. That is, the included angle α1 between the first connecting plate 214 and the middle plate 212 can be 40°, 45°, 50°, 55°, 60°, 65°, 70°, etc. Through the above settings, the lifting lug 2 can be easily processed and formed, and its structure can be optimized, thereby improving the overall structural strength of the lifting lug 2.

[0070] In some embodiments of the present invention, such as Figure 4 As shown, the distance between the two first partitions 216 along the second direction F2 can be set to L2, satisfying: 10mm≤L2≤30mm. That is, the distance L2 between the two first partitions 216 along the second direction F2 can be 10mm, 15mm, 20mm, 25mm, 30mm, etc. Through the above settings, the middle part of the lifting lug 2 can be effectively supported, optimizing the structure of the lifting lug 2, improving the structural stability of the lifting lug 2, reducing the processing difficulty of the lifting lug 2, and improving the practicality of the lifting lug 2.

[0071] In some embodiments of the present invention, the ratio of the dimension L1 of the main body 21 along the second direction F2 to the dimension H1 of the main body 21 along the axial direction F3 of the mounting hole can be set to be greater than or equal to 1.5 and less than or equal to 3. Furthermore, the included angle α1 formed between the first connecting plate 214 and the middle plate 212 can be set to be greater than or equal to 40° and less than or equal to 70°. Additionally, the distance L2 between the two first partition plates 216 along the second direction F2 can be set to be greater than or equal to 10 mm and less than or equal to 30 mm. This effectively improves the structural stability of the lifting lug.

[0072] In some embodiments of the present invention, such as Figures 5-6 As shown, the main body 21 also includes a second partition 217, which is located in the middle of the main body 21 along the second direction F2. The second partition 217 extends along the axial direction F3 of the mounting hole, passes through the middle plate 212, and is connected at both ends to the top plate 211 and the bottom plate 213, respectively. The second partition 217 is used to separate the first chamber 23 and the second chamber 24. This improves the deformation resistance of the lifting lug 2 and enhances the design rationality of the battery pack tray 100.

[0073] In some embodiments of the present invention, the main body 21 further includes a third partition 218. Specifically, the third partition 218 may be connected between the junction of the second partition 217 and the middle plate 212 and one side edge of the bottom plate 213 along the second direction F2; and / or, the third partition 218 may be connected between the junction of the second partition 217 and the middle plate 212 and one side edge of the top plate 211 along the second direction F2.

[0074] For example, two third partitions 218 can be provided. One third partition 218 is connected between the connection point of the second partition 217 and the middle plate 212 and one edge of the bottom plate 213 along the second direction F2, and the other third partition 218 is connected between the connection point of the second partition 217 and the middle plate 212 and the other edge of the bottom plate 213 along the second direction F2, so that the third partitions 218 can further divide the second chamber 24. Alternatively, two third partitions 218 can be provided. One third partition 218 is connected between the connection point of the second partition 217 and the middle plate 212 and one edge of the top plate 211 along the second direction F2, and the other third partition 218 is connected between the connection point of the second partition 217 and the top plate 211 and the other edge of the bottom plate 213 along the second direction F2, so that the third partitions 218 can further divide the first chamber 23. This optimizes the structure of the lifting lug 2 and improves its reliability.

[0075] Simulation results show that the first-order mode of the battery pack, where the tray beam and lifting lug 2 are integrally formed, is 66.1Hz. Figure 5 The first-order mode of the battery pack shown in the lifting lug 2 is 69.2Hz, an improvement of 3.1Hz, thereby increasing the overall stiffness of the battery pack; it has Figure 5 The 3σ stress of key components within the battery pack of the lifting lug 2 shown is lower than that of the battery pack where the tray beam and lifting lug 2 are integrally formed, thus improving the fatigue durability of the battery pack; it has Figure 5 The battery pack of the lifting lug 2 shown is lighter than that of the battery pack in which the tray beam and the lifting lug 2 are integrally formed, achieving a weight reduction rate of 61.7%. This allows for a lightweight design of the battery pack tray 100, while simultaneously improving the rigidity of the lifting lug 2 and the battery pack modes, and reducing vibration stress levels.

[0076] In some embodiments of the present invention, such as Figure 6 As shown, the main body 21 can be moved along the second direction F2 (reference). Figure 1 The dimension of the main body 21 in the front-to-back direction (as shown) is set to L1, and the axial direction of the mounting hole is F3 (refer to) Figure 1 The dimension (shown in the vertical direction) is set as H1, satisfying: 1.5 ≤ L1 / H1 ≤ 2.5. That is, the ratio of the dimension L1 of the main body 21 along the second direction F2 to the dimension H1 of the main body 21 along the axial direction F3 of the mounting hole can be taken as 1.5, 1.7, 1.8, 2, 2.2, 2.5, etc. Therefore, the structure of the main body 21 can be optimized, improving the structural stability of the lifting lug 2.

[0077] In some embodiments of the present invention, such as Figure 6 As shown, an included angle α1 can be formed between the first connecting plate 214 and the middle plate 212, satisfying: 40°≤α1≤80°. That is, the included angle α1 between the first connecting plate 214 and the middle plate 212 can be 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, etc. Through the above settings, the lifting lug 2 can be easily processed and formed, and the structure of the upper part of the lifting lug 2 can be optimized, thereby improving the overall structural strength of the lifting lug 2.

[0078] In some embodiments of the present invention, such as Figure 6 As shown, the ratio of the dimension L1 of the main body 21 along the second direction F2 to the dimension H1 of the main body 21 along the axial direction F3 of the mounting hole can be set to be greater than or equal to 1.5 and less than or equal to 2.5, and the included angle α1 formed between the first connecting plate 214 and the middle plate 212 can be set to be greater than or equal to 40° and less than or equal to 80°. This effectively improves the structural stability of the lifting lug.

[0079] In some embodiments of the present invention, such as Figure 3 As shown, the first partition 216 can be connected to the outer wall of the sleeve portion 22. This increases the connection area between the main body portion 21 and the sleeve portion 22, thereby improving the overall structural stability of the lifting lug 2.

[0080] In some embodiments of the present invention, such as Figure 5 As shown, the second partition 217 can be connected to the outer wall of the sleeve portion 22. This increases the connection area between the main body portion 21 and the sleeve portion 22, thereby improving the overall structural stability of the lifting lug 2.

[0081] In some embodiments of the present invention, the main body 21 and the sleeve 22 can be integrally formed. This improves the connection strength between the main body 21 and the sleeve 22, thereby enhancing the overall structural stability of the lifting lug 2.

[0082] The present invention also proposes a battery pack.

[0083] The battery pack according to an embodiment of the present invention includes a battery pack tray 100 according to any of the above embodiments.

[0084] According to the battery pack of the present invention, the weight of the battery pack tray 100 is reduced, achieving lightweighting of the battery pack, while improving the rigidity of the lifting lug 2 and the vibration resistance of the battery pack.

[0085] The present invention also proposes an electrical device.

[0086] The electrical device according to embodiments of the present invention includes a battery pack according to any of the above embodiments. It should be noted that the electrical device can be a new energy vehicle or a hybrid vehicle.

[0087] According to the embodiments of the present invention, the weight of the battery pack tray 100 is reduced, achieving battery pack lightweighting, while improving the rigidity of the lifting lug 2 and the vibration resistance of the battery pack.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack tray (100), characterized in that, include: The tray frame (1) surrounds a receiving cavity (12). In a first direction (F1), the tray frame (1) includes two side frames (11) arranged opposite to each other. Multiple lugs (2) are arranged on opposite sides of the tray frame (1) in the first direction (F1), and the lugs (2) are connected to the side wall of the side frame (11) away from the receiving cavity (12); The lifting lug (2) includes a main body (21) and a sleeve (22). A through mounting hole is formed in the main body (21). At least a portion of the sleeve (22) passes through the mounting hole and is fixedly connected to the main body (21) along the circumference of the sleeve (22). The main body (21) is fixedly connected to the side frame (11). In the second direction (F2), the lug (2) is a symmetrically formed part, and the first direction (F1), the second direction (F2) and the axial direction (F3) of the mounting hole are perpendicular to each other; The lug (2) has multiple cavities inside; The main body (21) includes a top plate (211), a middle plate (212) and a bottom plate (213) arranged parallel to each other at axial (F3) intervals in the mounting holes. The top plate (211) is connected to the middle plate (212) through a first connecting plate (214) to define a first chamber (23). The bottom plate (213) is connected to the middle plate (212) through a second connecting plate (215) to define a second chamber (24). The dimension of the top plate (211) along the second direction (F2) is smaller than the dimension of the middle plate (212) along the second direction (F2), and the dimension of the middle plate (212) along the second direction (F2) is equal to the dimension of the bottom plate (213) along the second direction (F2); The main body (21) further includes two first partitions (216) spaced apart along the second direction (F2). The two first partitions (216) are symmetrically arranged about the center of the lug (2) in the second direction (F2). The first partitions (216) extend along the axial direction (F3) of the mounting hole and are used to separate the first chamber (23) and the second chamber (24); or The main body (21) also includes a second partition (217), which is located in the middle of the main body (21) along the second direction (F2). The second partition (217) extends along the axial direction (F3) of the mounting hole and is used to separate the first chamber (23) and the second chamber (24).

2. The battery pack tray (100) according to claim 1, characterized in that, The lug (2) and the side frame (11) are welded together.

3. The battery pack tray (100) according to claim 1, characterized in that, In the first direction (F1), the lugs (2) on opposite sides of the tray frame (1) are symmetrically arranged.

4. The battery pack tray (100) according to claim 1, characterized in that, The projection of the first chamber (23) onto the plane perpendicular to the first direction (F1) is an isosceles trapezoid; and / or, the projection of the second chamber (24) onto the plane perpendicular to the first direction (F1) is a rectangle.

5. The battery pack tray (100) according to claim 1, characterized in that, The main body (21) has a dimension of L1 along the second direction (F2) and a dimension of H1 along the axial direction (F3) of the mounting hole, satisfying: 1.5≤L1 / H1≤3.

0.

6. The battery pack tray (100) according to claim 1, characterized in that, An included angle α1 is formed between the first connecting plate (214) and the middle plate (212), satisfying: 40°≤α1≤70°.

7. The battery pack tray (100) according to claim 1, characterized in that, The distance between the two first partitions (216) along the second direction (F2) is L2, which satisfies: 10mm≤L2≤30mm.

8. The battery pack tray (100) according to claim 1, characterized in that, The main body (21) further includes a third partition (218), which connects the second partition (217) and the middle plate (212) to one side edge of the bottom plate (213) along the second direction (F2); and / or, The third partition (218) is connected between the connection between the second partition (217) and the middle plate (212) and one side edge of the top plate (211) along the second direction (F2).

9. The battery pack tray (100) according to claim 8, characterized in that, The main body (21) has a dimension of L1 along the second direction (F2) and a dimension of H1 along the axial direction (F3) of the mounting hole, satisfying: 1.5≤L1 / H1≤2.

5.

10. The battery pack tray (100) according to claim 8 or 9, characterized in that, An included angle α1 is formed between the first connecting plate (214) and the middle plate (212), satisfying: 40°≤α1≤80°.

11. The battery pack tray (100) according to claim 1, characterized in that, The first partition (216) is connected to the outer wall of the sleeve portion (22); or, the second partition (217) is connected to the outer wall of the sleeve portion (22).

12. The battery pack tray (100) according to claim 1, characterized in that, The main body (21) and the sleeve (22) are integrally formed.

13. A battery pack, characterized in that, Includes the battery pack tray (100) according to any one of claims 1-12.

14. An electrical appliance, characterized in that, Includes the battery pack according to claim 13.

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