Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment, and belongs to the technical field of batteries, the battery pack is provided with a first mounting piece, the first mounting piece is adjacent to a first end wall of a first wall, the first mounting piece and the first end wall are integrally formed, a second mounting piece is arranged, the second mounting piece is connected to a second wall, and the first mounting piece and the second mounting piece are integrally formed. The second mounting piece and the first mounting piece are arranged in a spaced mode, compared with a mounting point welded to the outer side wall, the first mounting piece is closer to the containing cavity, the situation that the first mounting piece is loosened or even disengaged in the hoisting process can be avoided through integrated forming, and therefore the connection strength between the first mounting piece and the box body is effectively enhanced, and the service life of the box body is prolonged. The overall hoisting strength of the battery pack is improved, the hoisting stability of the battery pack is guaranteed, the external space of the box body can be prevented from being occupied, and the stability of the whole battery pack in the hoisting process can be guaranteed while the hoisting strength of the whole battery pack is guaranteed through the arrangement of the second hanging piece.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery pack and electrical device. Background Technology

[0002] In existing battery packs, the lifting points or mounting points used to hoist the battery pack are usually welded to the outer wall of the enclosure. This means that the lifting points welded to the outer wall of the enclosure have low strength, which affects the overall lifting strength of the battery pack. Moreover, welding the lifting points or mounting points to the outer wall occupies external space of the enclosure and poses a risk of collision with external components during the hoisting process, which affects the smooth progress of the hoisting. Utility Model Content

[0003] The purpose of this application is to provide a battery pack and electrical equipment to solve the problem that the welding of the lifting points to the outer wall of the battery pack affects the lifting strength of the battery pack.

[0004] A first aspect of this application provides a battery pack having a first direction. The battery pack includes: a housing with an internal cavity; the housing includes a first wall and a second wall spaced apart along the first direction, the first wall and the second wall forming the cavity; the first wall includes a first end wall and a second end wall disposed opposite to each other along the first direction, the first end wall being adjacent to the cavity; a first mounting member disposed along the first direction adjacent to the first end wall, the first mounting member being integrally formed with the first end wall; and a second mounting member connected to the second wall, the second mounting member and the first mounting member being spaced apart.

[0005] Optionally, the first wall has a receiving cavity inside, the first end wall and the second end wall are used to form the receiving cavity, the first mounting member is disposed in the receiving cavity, and along the first direction, the first mounting member is connected to the side of the first end wall away from the receiving cavity.

[0006] Optionally, the battery pack further has a third direction, which intersects with the first direction; the first wall further includes a frame, one end of which is connected to the first end wall along the first direction, and the other end of which is connected to the second end wall, to form the accommodating cavity; the frame includes a first side wall and a second side wall arranged opposite to each other along the third direction, the first mounting member includes a first end and a second end arranged opposite to each other along the third direction, the first end passing through the first side wall, and the second end located inside the accommodating cavity; along the third direction, a first mounting hole is formed on the end face of the first end opposite to the second end; the second end is connected to the second side wall, or there is a gap between the second end and the second side wall.

[0007] Optionally, the first mounting member is disposed in the receiving cavity, and along the first direction, the first mounting member is connected to the side of the first end wall facing the receiving cavity.

[0008] Optionally, the battery pack further has a third direction, which intersects with the first direction; the first wall includes a first wall surface and a second wall surface disposed opposite to each other along the third direction; the first mounting member includes a first end surface and a second end surface disposed opposite to each other along the third direction, and a first mounting hole is provided on the first end surface; along the third direction, the first end surface is flush with the first wall surface, and / or the second end surface is flush with the second wall surface.

[0009] Optionally, the battery pack further has a second direction that intersects with the first direction; the first end wall has a middle section, and the first mounting member is connected to the middle section; the number of the second mounting members is at least two, the at least two second mounting members are arranged at intervals along the second direction, and the at least two second mounting members are distributed on both sides of the first mounting member along the second direction.

[0010] Optionally, the battery pack further has a second direction intersecting the first direction; the battery pack also includes two third mounting members extending along the first direction; the housing also includes a third wall and a fourth wall spaced apart along the second direction, the first wall, the third wall, the second wall and the fourth wall being sequentially connected end to end to form the housing with open ends to form the receiving cavity; along the second direction, one of the third mounting members is connected to the side of the third wall away from the receiving cavity, and the other third mounting member is connected to the side of the fourth wall away from the receiving cavity.

[0011] Optionally, the battery pack further has a second direction that intersects with the first direction; the first wall further includes a cover plate, and the second end wall has an opening that extends through the second end wall along the first direction, the opening communicating with the accommodating cavity, the cover plate being detachably installed on the second end wall, and the cover plate closing on the opening.

[0012] Optionally, the battery pack further includes a battery management component; the first wall has a receiving cavity inside, the first end wall and the second end wall are used to surround the receiving cavity, and the battery management component is disposed in the receiving cavity.

[0013] A second aspect of this application provides an electrical device including the battery pack described above.

[0014] In summary, this application provides a battery pack and an electrical device having the battery pack. The battery pack includes a defined housing comprising a first wall and a second wall disposed opposite to each other. The first wall includes a first end wall and a second end wall disposed opposite to each other. The first end wall is adjacent to a receiving cavity inside the housing and is provided with a first mounting member. The first mounting member is attached to the first end wall of the first wall and is integrally formed with the first end wall. A second mounting member is provided and connected to the second wall. The second mounting member is spaced apart from the first mounting member. Compared with mounting points welded to the outer wall, the structural design of integrally forming the first mounting member with the first end wall adjacent to the receiving cavity makes the first mounting member closer to the receiving cavity. Furthermore, the one-piece molding prevents the first mounting component from loosening or even falling off during hoisting, thereby effectively enhancing the connection strength between the first mounting component and the housing, improving the overall hoisting strength of the battery pack, and ensuring the hoisting stability of the battery pack. In addition, compared with the mounting points welded to the outer wall, the structural design of the first mounting component adjacent to the first end wall avoids occupying the space outside the housing, preventing the battery pack from rubbing against external components during hoisting, and ensuring smooth hoisting. Moreover, the setting of the second mounting component on the second wall ensures the hoisting strength of the entire battery pack, while the cooperation between the second mounting component and the first mounting component ensures the stability of the entire battery pack during hoisting. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the battery pack provided in the embodiments of this application from a first angle;

[0017] Figure 2 yes Figure 1 Exploded view;

[0018] Figure 3 This is a schematic diagram of the battery pack provided in the embodiments of this application from a second angle;

[0019] Figure 4 yes Figure 3 Exploded view;

[0020] Figure 5 This is a schematic diagram of a first structure of the battery pack combined with the first mounting member according to an embodiment of this application;

[0021] Figure 6 yes Figure 5 Another structural diagram;

[0022] Figure 7 yes Figure 6 Top view;

[0023] Figure 8 yes Figure 6 Sectional view along axis AA;

[0024] Figure 9 yes Figure 8 A magnified structural diagram at point B;

[0025] Figure 10 This is a schematic diagram of a second structure of the battery pack combined with the first mounting member according to an embodiment of this application;

[0026] Figure 11 yes Figure 10 Top view;

[0027] Figure 12 yes Figure 10 Another structural diagram;

[0028] Figure 13 yes Figure 10 CC-direction sectional view;

[0029] Figure 14 yes Figure 13 A magnified structural diagram at point D.

[0030] Explanation of key figure labels:

[0031] 1. Battery pack;

[0032] 10. Box body; 101. Receiving cavity; 11. First wall; 110. Receiving cavity; 1101. First wall surface; 1102. Second wall surface; 111. First end wall; 1110. First through hole; 1111. Middle section; 1112. Middle section line; 112. Second end wall; 1120. Third mounting hole; 1121. Opening; 1122. Third through hole; 113. Frame body; 1131. First side wall; 11310. First mounting hole; 1132. Second side wall; 1132. Second mounting hole; 1133. Third side wall; 1133. Second through hole; 1134. Fourth side wall; 114. Cover plate; 12. Second wall; 13. Third wall; 14. Fourth wall;

[0033] 20. First mounting component; 201. First end; 2011. First end face; 202. Second end; 2021. Second end face; 21. First mounting hole; 22. Recess; 23. Connecting hole;

[0034] 30. Second mounting component; 31. Second mounting hole;

[0035] 40. Third mounting component; 41. Third mounting hole;

[0036] 50. Battery management component; 51. Battery circuit breaker unit; 52. Battery management system;

[0037] 60. Top cover; 61. Bottom cover;

[0038] 70. Battery cell;

[0039] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0040] To make the objectives, technical solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0041] In the description of this application, 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," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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 this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the embodiments of the application, "parallel" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is -1° to 1°. "Perpendicular" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is 89° to 91°. Equal distances or equal angles refer to a state in which the tolerance range is -1% to 1%.

[0045] Some embodiments of this application provide an electrical device including a battery pack 1, which serves as the power supply for the electrical device. The electrical device may be, but is not limited to, mobile devices (e.g., mobile phones, laptops, etc.), electric vehicles (e.g., pure electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, electric bicycles, electric scooters, electric golf carts, electric trucks, etc.), electric trains, ships and satellites, energy storage systems, etc.

[0046] In some embodiments of this application, a battery pack 1 is provided, as shown in the reference... Figures 1 to 14 The battery pack 1 includes: a housing 10, a first mounting member 20, and a second mounting member 30. The battery pack 1 has intersecting first directions X, second directions Y, and a third direction Z, as detailed below. Figures 1 to 14 In the embodiment shown, the first direction X, the second direction Y, and the third direction Z are all orthogonal to each other.

[0047] Reference Figures 1-4 The housing 10 has an internal cavity 101. The housing 10 includes a first wall 11 and a second wall 12 arranged opposite each other along a first direction X. The first wall 11 and the second wall 12 form the cavity 101, which is used to accommodate the battery cell 70. (Refer to...) Figures 1 to 14 The first wall 11 includes a first end wall 111 and a second end wall 112 disposed opposite to each other along the first direction X. The first end wall 111 is adjacent to the receiving cavity 101, and the second end wall 112 is away from the receiving cavity 101 along the first direction X. In other words, the first end wall 111 is the inner side wall of the first wall 11, and the second end wall 112 is the outer side wall of the first wall 11.

[0048] Reference Figures 1-4The housing 10 also includes a third wall 13 and a fourth wall 14 arranged opposite each other along the second direction Y. The first wall 11, the third wall 13, the second wall 12, and the fourth wall 14 are connected end to end to enclose and form a housing 10 with open ends. The first wall 11, the third wall 13, the second wall 12, and the fourth wall 14 are connected end to end to enclose a receiving cavity 101. Specifically, as shown in the figure... Figures 1 to 14 In the embodiment shown, the first direction X is parallel to the length direction of the box 10, the second direction Y is parallel to the width direction of the box 10, and the third direction Z is parallel to the height direction of the box 10.

[0049] Reference Figure 2 as well as Figures 4 to 14 The first mounting component 20 is disposed adjacent to the first end wall 111 along the first direction X, and the first mounting component 20 and the first end wall 111 are integrally formed. In some implementations, the first mounting component 20 and the first end wall 111 are integrally formed by die casting, and in some implementations, the first mounting component 20 and the first end wall 111 are integrally formed by injection molding. The specific method can be selected according to the actual use requirements.

[0050] Reference Figures 1-4 The second mounting member 30 is connected to the second wall 12, and the second mounting member 30 and the first mounting member 20 are spaced apart, as shown in the following figure. Figures 1-4 In the embodiment shown, the second mounting member 30 protrudes from the side of the second wall 12 facing away from the first wall 11 along the first direction X. The second mounting member 30 and the first mounting member 20 are spaced apart along the first direction X. In some implementations, the second mounting member 30 is welded to the second wall 12. In some implementations, the second mounting member 30 and the second wall 12 are integrally formed.

[0051] During the assembly process, battery packs require hoisting. Hoisting is usually achieved through a combination of hoisting ropes and hoisting points or attachment points. In existing battery packs, hoisting points are usually welded to the outer wall of the casing. The strength of these hoisting points welded to the outer wall of the casing is relatively low, meaning that the hoisting force that the hoisting points can withstand is small, which affects the hoisting strength of the battery pack. For battery packs with high energy density and high overall mass, there is a risk of the battery pack falling during hoisting, which affects the hoisting safety of the battery pack.

[0052] In addition, during the assembly of the battery pack into the electrical equipment, the entire battery pack needs to be assembled with the electrical equipment through mounting points. For example, bolts are inserted into the mounting points to assemble the battery pack with the vehicle chassis. However, the mounting points welded to the outer wall of the battery pack may loosen or even fall off when the electrical equipment encounters bumps or impacts, affecting the stability and firmness of the mounting between the battery pack and the electrical equipment.

[0053] The battery pack 1 provided in this application embodiment has the first mounting member 20 disposed along the first direction X adjacent to the first end wall 111 of the first wall 11, that is, the first mounting member 20 is disposed adjacent to the inner side wall of the first wall 11. In other words, the first mounting member 20 is disposed along the first direction X adjacent to the receiving cavity 101 inside the housing 10. Moreover, the first mounting member 20 is integrally formed with the first end wall 111. Compared with the existing battery pack structure in which the hanging point or mounting point is welded to the outer side wall of the housing, the first mounting member 20 is adjacent to the first end wall 111. Furthermore, the structural design of the first mounting component 20, which is far from the second end wall 112, ensures that it does not occupy external space of the housing 10. During the hoisting of the entire battery pack 1, the first mounting component 20, acting as a lifting point, prevents collisions with external components, ensuring hoisting stability and smooth assembly. During the assembly of the battery pack 1 with electrical equipment, the first mounting component 20, acting as a mounting point, prevents collisions with components on the electrical equipment, ensuring the mounting stability and safety of the entire battery pack 1 with the electrical equipment. The integral molding design of the first mounting component 20 with the first end wall 111, compared to lifting points or mounting points welded to the outer wall of the housing, effectively improves the connection strength between the first mounting component 20 and the housing 10. This ensures the hoisting strength of the housing 10 and its internal battery cells and electrical components during battery pack 1 assembly, and guarantees the mounting stability and firmness of the entire battery pack 1 with the electrical equipment during assembly. Furthermore, the second mounting member 30 on the second wall 12, spaced apart from the first mounting member 20, ensures the overall lifting strength of the battery pack 1. The first mounting member 20 and the second mounting member 30 work together to ensure uniform stress distribution on the battery pack 1 during lifting, improving the uniformity of vibration mode distribution and ensuring balanced stress distribution during lifting and assembly. This guarantees smoothness and stability during lifting and ensures the stability and firmness of the mounting between the battery pack 1 and the electrical equipment during assembly. Moreover, the integrally formed structure between the first mounting member 20 and the first end wall 111 reduces manufacturing difficulty and cost, improving the manufacturing efficiency of the battery pack 1.

[0054] In some embodiments, refer to Figure 2 as well as Figures 4-9 The first wall 11 has a cavity 110 inside, and the first end wall 111 and the second end wall 112 are used to enclose the cavity 110, as shown in the figure. Figures 5-9 The first mounting member 20 is disposed in the receiving cavity 110, and along the first direction X, the first mounting member 20 is connected to the side of the first end wall 111 opposite to the receiving cavity 101. Specifically, as follows... Figure 5In the illustrated embodiment, the first mounting member 20 is integrally formed with the first end wall 111. A receiving cavity 110 is provided inside the first wall 11, providing additional storage space for the housing 10 besides the receiving cavity 101, thereby increasing the storage space of the battery pack 1. In some implementations, electrical components (such as relays, fuses, etc.) can be placed in the receiving cavity 110, allowing for the storage of more battery cells within the receiving cavity 101, improving the space utilization rate inside the housing 10, and increasing the energy density of the battery pack 1. The design of placing the first mounting member 20 in the receiving cavity 110 and connecting it to the side of the first end wall 111 opposite to the receiving cavity 101 ensures that the first mounting member 20 does not occupy external space of the housing 10, and guarantees the connection strength between the first mounting member 20 and the first wall 11, ensuring the lifting strength of the entire battery pack 1 and the mounting strength between the entire battery pack 1 and the electrical equipment.

[0055] In some embodiments, refer to Figures 1 to 14 The first wall 11 also includes a frame 113, one end of which is connected to the first end wall 111 along the first direction X, and the other end is connected to the second end wall 112, to form an accommodating cavity 110. (See reference...) Figures 5-6 , Figures 8-10 as well as Figures 12-14 The frame 113 includes a first sidewall 1131 and a second sidewall 1132 disposed opposite each other along a third direction Z, and a third sidewall 1133 and a fourth sidewall 1134 disposed opposite each other along a second direction Y. The first sidewall 1131, the third sidewall 1133, the second sidewall 1132 and the fourth sidewall 1134 are connected end to end to form a frame 113 with openings at opposite ends along a first direction X. The first end wall 111 covers the opening of the frame 113 along the first direction X adjacent to the receiving cavity 101, and the second end wall 112 covers the opening of the frame 113 along the first direction X away from the receiving cavity 101, thereby defining a receiving cavity 110 inside the frame 113. (Refer to...) Figures 5-6 as well as Figures 8-9 The first mounting component 20 includes a first end 201 and a second end 202 disposed opposite to each other along the third direction Z. The first end 201 passes through the first sidewall 1131 of the frame 113, and the second end 202 is located inside the accommodating cavity 110. Along the third direction Z, a first mounting hole 21 is formed on the end face of the first end 201 opposite to the end of the second end 202, as detailed below. Figures 5-6 as well as Figures 8-9 In the embodiment shown, the first mounting hole 21 is a blind hole. The opening of the first mounting hole 21 allows the battery pack 1 to be hoisted as a lifting point. When assembling the battery pack 1 with the electrical equipment, the first mounting hole 21 can be used as a mounting point to achieve the assembly of the battery pack 1 and the electrical equipment, thereby improving the convenience of hoisting and assembly, and ensuring the hoisting strength and load-bearing strength of the entire battery pack 1.

[0056] In some embodiments, refer to Figure 5 and Figure 8 The second end 202 is connected to the second side wall 1132 of the frame 113, so that the first mounting member 20 is disposed inside the accommodating cavity 110 and integrally formed with the first end wall 111, while the second end 202 is connected to the second side wall 1132, which can further improve the connection strength between the first mounting member 20, the first end wall 111 and the frame 113, and ensure the hoisting strength and mounting strength of the entire battery pack 1.

[0057] In some embodiments, there is a gap between the second end 202 of the first mounting member 20 and the second side wall 1132 of the frame 113. The structural design of the gap between the second end 202 and the second side wall 1132 can reduce the space occupied by the first mounting member 20 in the accommodating cavity 110, facilitate the layout of electrical components in the accommodating cavity 110, and improve the space utilization of the accommodating cavity 110.

[0058] In some embodiments, refer to Figure 5 The first mounting member 20 has a recess 22 formed at one end opposite to the first end wall 111 along the first direction X. The recess 22 can provide installation space for electrical components arranged in the accommodating cavity 110, and ensure the installation stability of electrical components in the accommodating cavity 110.

[0059] In some embodiments, refer to Figure 5 as well as Figures 8-9 The first mounting member 20 has a connection hole 23 at one end opposite to the first end wall 111 along the first direction X. The connection hole 23 and the recessed part 22 are spaced apart along the third direction Z. The connection hole 23 is used to connect with the electrical components arranged in the accommodating cavity 110 to ensure the secure installation of the electrical components in the accommodating cavity 110.

[0060] In some embodiments, refer to Figure 2 and Figure 4 The first mounting component 20 is disposed in the receiving cavity 101, as shown in the reference. Figure 2 and Figure 4 as well as Figures 10-14Along the first direction X, the first mounting member 20 is connected to the side of the first end wall 111 facing the receiving cavity 101. This structural design, where the first mounting member 20 is placed in the receiving cavity 101 and connected to the side of the first end wall 111 facing the receiving cavity 101, combined with the integral molding of the first mounting member 20 and the first end wall 111, ensures the connection strength between the first mounting member 20 and the first wall 11, thereby guaranteeing the lifting strength of the entire battery pack 1 and the connection strength between the battery pack 1 and the electrical equipment. Furthermore, although the first mounting member 20 is located in the receiving cavity 101, it only occupies a small space inside the receiving cavity 101 in the first direction X. After the battery pack 1 is assembled, the position of the first mounting member 20 will be filled with potting compound. Therefore, while ensuring lifting strength and connection strength, it does not affect the space utilization rate inside the housing 10.

[0061] In some embodiments, refer to Figures 5-6 , Figures 8-10 as well as Figures 12-13 The first wall 11 includes a first wall surface 1101 and a second wall surface 1102 disposed opposite to each other along the third direction Z, as shown in the figure. Figure 10 as well as Figures 12-14 The first mounting component 20 includes a first end face 2011 and a second end face 2021 disposed opposite each other along the third direction Z. A first mounting hole 21 is provided on the first end face 2011. Along the third direction Z, the first end face 2011 is flush with the first wall surface 1101. Specifically, the first end face 2011 and the first wall surface 1101 of the first wall 11 are on the same plane, or the distance between the first end face 2011 and the first wall surface 1101 along the third direction Z is -1mm to 1mm. The structural design of the first end face 2011 being flush with the first wall surface 1101 and the first mounting hole 21 being provided on the first end face 2011 ensures the overall lifting strength and connection strength of the battery pack 1, while also ensuring the overall flatness of the battery pack 1 after assembly and the sealing performance of the entire battery pack 1.

[0062] Among them, reference Figures 5-6 , Figures 8-10 as well as Figures 12-13 The first wall surface 1101 of the first wall 11 and the side of the first side wall 1131 of the frame 113 facing away from the second side wall 1132 along the third direction Z are on the same plane. The second wall surface 1102 and the side of the second side wall 1132 of the frame 113 facing away from the first side wall 1131 along the third direction Z are on the same plane.

[0063] In some embodiments, the second end face 2021 is flush with the second wall face 1102. Specifically, the second end face 2021 and the second wall face 1102 of the first wall 11 are on the same plane, or the distance between the second end face 2021 and the second wall face 1102 along the third direction Z is -1mm to 1mm. The structural design that the second end face 2021 is flush with the second wall face 1102 allows the first mounting member 20 to extend along the third direction Z to the second wall face 1102 of the first wall 11, thereby further improving the connection strength between the first mounting member 20 and the first wall 11, and thus ensuring the hoisting strength of the entire battery pack 1 and the connection strength between the entire battery pack 1 and the electrical equipment.

[0064] In some embodiments, refer to Figure 7 and Figure 11 The first wall 11 has a middle section 1111, and the first mounting member 20 is connected to the middle section 1111, as shown in the reference. Figures 1-4 The number of second mounting members 30 is at least two, and the at least two second mounting members 30 are arranged at intervals along the second direction Y, and the at least two mounting members 30 are distributed on both sides of the first mounting member 20 along the second direction Y. The structural design of connecting the first mounting member 20 to the middle section 1111 of the first wall 11 and distributing at least two second mounting members 30 on both sides of the first mounting member 20 along the second direction Y can make the first mounting member 20 and the second mounting members 30 form a stable triangular structure, thereby improving the hoisting strength of the entire battery pack 1, improving the connection strength between the battery pack 1 and the electrical equipment, improving the stress uniformity of the entire battery pack 1 during hoisting, improving the uniformity of the vibration mode distribution, and improving the stress distribution balance of the entire battery pack 1 during hoisting and assembly.

[0065] Reference Figures 1-4 The second mounting component 30 has a second mounting hole 31 that extends through the second mounting component 30 in the third direction Z. Specifically, as shown... Figures 1-4 In the illustrated embodiment, there is one first mounting member 20 and two second mounting members 30, which are spaced apart along the second direction Y on both sides of the first mounting member 20, forming a triangular structure with the first mounting member 20. In other implementations, there can be two or more first mounting members 20, spaced apart along the second direction Y, and there can be two or more second mounting members 30, as long as the second mounting members 30 at both ends of the second direction Y are located on both sides of two or more first mounting members 20.

[0066] Among them, reference Figure 7 and Figure 11The method for determining the middle section 1111 of the first wall 11 is as follows: The length of the first end wall 111 along the second direction Y is measured using a measuring instrument. Based on this length, the midpoint of the length is determined. Using this midpoint as the starting point, a middle section line 1112 is drawn on the first wall surface 1101 of the first wall 11. The range of this middle section line 1112 along both sides of the second direction Y, from 10mm to 20mm, constitutes the middle section 1111 of the first wall 11. In other implementations, the range of the middle section line 1112 along both sides of the second direction Y, from 5mm to 10mm, can be defined as the middle section 1111 of the first wall 11. The specific choice can be made based on the actual application.

[0067] In some embodiments, refer to Figures 1-4 The battery pack 1 also includes two third mounting members 40. The third mounting members 40 extend along the first direction X and the second direction Y. One third mounting member 40 is connected to the side of the third wall 13 opposite to the receiving cavity 101, and the other third mounting member 40 is connected to the side of the fourth wall 14 opposite to the third wall 13. The third mounting member 40 has a third mounting hole 41 that extends through the third mounting member 40 along the third direction Z. The design of the third mounting member 40, in conjunction with the first mounting member 20 and the second mounting member 30, ensures that mounting members are provided on the first wall 11, second wall 12, third wall 13 and fourth wall 14 of the housing 10, thereby effectively improving the lifting strength of the entire battery pack 1 and the connection strength between the battery pack 1 and the electrical equipment.

[0068] In existing battery packs, mounting points are typically set on two opposite side walls along the width of the battery pack body, and a mounting point or lifting point is set on one of the two side walls along the length. In other words, existing battery packs usually only have mounting points or lifting points on three side walls of the body. This can lead to uneven stress distribution and uneven force on the entire battery pack during hoisting. The side walls without mounting points or lifting points are at risk of damage.

[0069] The battery pack 1 provided in this application embodiment, through the cooperation of the third mounting member 40 with the first mounting member 20 and the second mounting member 30, can provide lifting points or mounting points on all four walls of the housing 10, thereby making the force on the entire battery pack 1 more uniform and the distribution of vibration modes more uniform during the hoisting process, and the stress distribution of the entire battery pack 1 more balanced during the hoisting and mounting process.

[0070] In some embodiments, refer to Figures 1-4 The first wall 11 also includes a cover plate 114, see reference. Figure 5 , Figure 8 as well as Figure 12 An opening 1121 is provided on the second end wall 112, extending through the second end wall 112 in the first direction X. The opening 1121 communicates with the receiving cavity 110. (Refer to...) Figures 1-4 The cover plate 114 is detachably mounted on the second end wall 112, and the cover plate 114 closes the opening 1121. Specifically, refer to Figure 5 and Figure 12 The second end wall 112 has a third mounting hole 1120 on the side facing away from the first end wall 111 along the first direction X. There are multiple third mounting holes 1120, which surround the opening 1121 along the circumferential direction of the second end wall 112. The cover plate 114 is detachably connected to the second end wall 112 through the third mounting holes 1120. The cover plate 114 can seal the accommodating cavity 110, thereby protecting the electrical components arranged in the accommodating cavity 110. The detachable connection of the cover plate 114 facilitates the installation and removal of the electrical components in the accommodating cavity 110.

[0071] In some embodiments, refer to Figure 2 and Figure 4 The battery pack 1 also includes a battery management component 50, which is disposed in the receiving cavity 110. Moving the battery management component 50 from the receiving cavity 101 to the receiving cavity 110 located outside the receiving cavity 101 allows the receiving cavity 101 to accommodate a larger number of battery cells 70, improving the space utilization inside the housing 10 and increasing the energy density of the battery pack 1. (Referring to...) Figure 2 and Figure 4 The battery management component 50 includes a battery disconnect unit 51 (BDU) and a battery management system 52 (BMS), which are disposed at a distance from each other in the accommodating cavity 110 along the second direction Y.

[0072] In some embodiments, refer to Figures 1-4 The battery pack 1 also includes a top cover 60 and a bottom cover 61, as shown in the figure. Figures 5-14 A first mounting hole 11310 is provided on the first side wall 1131 of the frame 113, as shown in the figure. Figure 8 A second mounting hole 11320 is provided on the second side wall 1132. As mentioned above, the first wall 11, the third wall 13, the second wall 12, and the fourth wall 14 are connected end to end to form a box 10 with openings at both ends. The top cover 60 covers one of the two openings and is detachably connected to the first side wall 1131 through the first mounting hole 11310. The bottom cover 61 covers the other of the two openings and is detachably connected to the second side wall 1132 through the second mounting hole 11320. The top cover 60 is provided with a connecting hole (not shown in the figure). The connecting hole is positioned opposite to the first mounting hole 21 in the third direction Z to facilitate the hoisting and mounting of the entire battery pack 1.

[0073] In some embodiments, the first mounting member 20 and the first end wall 111 are integrally formed, and the materials of the first mounting member 20 and the first end wall 11 are A380 aluminum alloy. In some implementations, the materials of the first mounting member 20 and the first end wall 11 are AlSi. 10 In some implementations, the first mounting component 20 and the first wall 11 are made of Al6061 / 6063-T6 aluminum alloy, and the specific material can be selected according to the actual usage requirements.

[0074] In some embodiments, refer to Figures 5-6 as well as Figures 10-13 A first through hole 1110 is provided on the first end wall 111, which extends through the first end wall 111 along the first direction X. The first through hole 1110 communicates with the receiving cavity 110. There are multiple first through holes 1110, which are spaced apart along the second direction Y. The first through holes 1110 are used to connect the electrical components in the battery management assembly 50 arranged in the receiving cavity 110 with the battery cells 70 and related electrical components (such as CCS assembly, i.e., wire harness board integration, acquisition integration, assembly or wire harness isolation plate) in the receiving cavity 101.

[0075] In some embodiments, refer to Figure 6 , Figure 8 as well as Figure 12 A second through hole 11330 is provided on the third side wall 1133 of the frame 113, which extends through the third side wall 1133 along the second direction Y. The second through hole 11330 communicates with the accommodating cavity 110 and is used to connect the battery management system 52 in the battery management assembly 50 to external devices.

[0076] In some embodiments, refer to Figures 5-6 , Figure 8 , Figure 10 as well as Figures 12-13 A third through hole 1122 is provided on the second end wall 112, which extends through the second end wall 112 along the first direction X. The third through hole 1122 communicates with the accommodating cavity 110 and is used to connect the battery disconnect unit 51 in the battery management assembly 50 to an external device.

[0077] The technical solutions provided by the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery pack having a first orientation, characterized in that, The battery pack includes: The box has an internal cavity, and the box includes a first wall and a second wall spaced apart along the first direction, which are used to enclose the cavity. The first wall includes a first end wall and a second end wall disposed opposite to each other along the first direction, and the first end wall is adjacent to the receiving cavity; The first mounting component is disposed adjacent to the first end wall along the first direction, and the first mounting component is integrally formed with the first end wall. The second mounting component is connected to the second wall, and the second mounting component and the first mounting component are spaced apart.

2. The battery pack as described in claim 1, characterized in that, The first wall has a receiving cavity inside, and the first end wall and the second end wall are used to form the receiving cavity. The first mounting member is disposed in the receiving cavity, and along the first direction, the first mounting member is connected to the side of the first end wall away from the receiving cavity.

3. The battery pack as described in claim 2, characterized in that, The battery pack also has a third direction, which intersects with the first direction; The first wall also includes a frame, one end of which is connected to the first end wall along the first direction, and the other end of which is connected to the second end wall, to form the accommodating cavity; The frame includes a first sidewall and a second sidewall that are disposed opposite to each other along the third direction. The first mounting member includes a first end and a second end that are disposed opposite to each other along the third direction. The first end passes through the first sidewall and the second end is located inside the accommodating cavity. Along the third direction, a first mounting hole is provided on the end face of the first end opposite to the second end; The second end is connected to the second sidewall, or there is a gap between the second end and the second sidewall.

4. The battery pack as described in claim 1, characterized in that, The first mounting member is disposed in the receiving cavity, and along the first direction, the first mounting member is connected to the side of the first end wall facing the receiving cavity.

5. The battery pack as described in claim 4, characterized in that, The battery pack also has a third direction, which intersects with the first direction; The first wall includes a first wall surface and a second wall surface disposed opposite to each other along the third direction; The first mounting component includes a first end face and a second end face disposed opposite to each other along the third direction, and a first mounting hole is provided on the first end face; Along the third direction, the first end face is flush with the first wall surface, and / or the second end face is flush with the second wall surface.

6. The battery pack as described in claim 1, characterized in that, The battery pack also has a second direction, which intersects with the first direction; The first end wall has a middle section, and the first mounting member is connected to the middle section; The number of the second mount is at least two, the at least two second mounts are arranged at intervals along the second direction, and the at least two second mounts are distributed on both sides of the first mount along the second direction.

7. The battery pack as described in claim 1, characterized in that, The battery pack also has a second direction, which intersects with the first direction; The battery pack also includes two third mounting members that extend along the first direction; The box also includes a third wall and a fourth wall spaced apart along the second direction. The first wall, the third wall, the second wall and the fourth wall are connected end to end in sequence to form the box with open ends to form the receiving cavity. Along the second direction, one of the third mounting members is connected to the side of the third wall opposite to the receiving cavity, and the other of the third mounting members is connected to the side of the fourth wall opposite to the receiving cavity.

8. The battery pack as described in claim 2, characterized in that, The battery pack also has a second direction, which intersects with the first direction; The first wall further includes a cover plate, and the second end wall has an opening that extends through the second end wall in the first direction. The opening communicates with the receiving cavity, and the cover plate is detachably installed on the second end wall and closes to the opening.

9. The battery pack as claimed in claim 1, characterized in that, The battery pack also includes a battery management component; The first wall has an accommodating cavity inside, and the first end wall and the second end wall are used to enclose the accommodating cavity, and the battery management component is disposed in the accommodating cavity.

10. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 9.

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