Battery pack

Abstract

The invention discloses a battery pack and electric equipment. The battery pack includes: a battery module; the box body is used for accommodating the battery module, an accommodating groove is formed in a frame of the box body, the height direction of the accommodating groove along the box body is defined as a Z direction, the depth direction of the accommodating groove is defined as an X direction, and the width direction of the accommodating groove is defined as a Y direction; and the hoisting assembly comprises an embedded part and a hoisting part, the embedded part is arranged in the containing groove, the hoisting part and the embedded part are detachably connected, and the hoisting part is configured to protrude out of the box body in the X direction and is connected with the embedded part so as to be used for being matched with an external hoisting machine. According to the battery pack disclosed by the invention, the accommodating groove is formed in the frame of the box body, and the embedded part can be arranged in the accommodating groove when the hoisting assembly is mounted on the frame, so that the protruding width of the whole hoisting assembly relative to the box body can be reduced, namely the miniaturization of the size of the whole pack can be realized.

Description

Technical Field

[0001] This invention belongs to the field of battery technology, and specifically relates to a battery pack. Background Technology

[0002] A battery pack is a device used to supply power, such as powering a car. During installation or transport, the battery pack needs to be hoisted. In related technologies, the handles or hoisting structures used to hoist the battery pack are usually welded directly to the casing, thus increasing the overall size of the pack due to the presence of the handles or hoisting structures. Summary of the Invention

[0003] The purpose of this invention is to disclose a battery pack to solve the technical problem of the large size of the battery pack after the installation of the hoisting structure on the box body in the prior art.

[0004] To achieve the above objectives, one aspect of the present invention discloses a battery pack comprising: Battery module; A housing for accommodating the battery module, wherein a receiving groove is provided on the side of the housing, the receiving groove is defined as the Z direction along the height direction of the housing, the X direction along the depth direction of the receiving groove, and the Y direction along the width direction of the receiving groove; A hoisting assembly includes an insert and a hoisting member, the insert being disposed within the receiving groove, the hoisting member and the insert being detachably connected, the hoisting member being configured to protrude from the housing along the X direction and be connected to the insert for use with an external hoisting machine.

[0005] As an optional implementation, the receiving groove is a wedge-shaped groove, the width and height of the wedge-shaped groove along the XZ direction gradually decrease from the center of the box to the edge of the box, the groove wall of the receiving groove is formed by two reinforcing ribs of the box frame, the opening of the wedge-shaped groove is opened on the outer side wall of the box frame, and the opening of the wedge-shaped groove extends from one of the reinforcing ribs to the other reinforcing rib along the Z direction; The insert is a wedge-shaped component, detachably disposed within the wedge-shaped groove, and includes a first connecting block and a second connecting block that are separately disposed. The first connecting block and the second connecting block respectively cooperate with a groove wall of the wedge-shaped groove along the Z direction.

[0006] As an optional implementation, one of the first connecting block and the second connecting block is provided with a groove, and the other is provided with a protrusion that cooperates with the groove, the protrusion being inserted into the groove.

[0007] As an optional implementation, both the groove and the protrusion are triangular.

[0008] As an optional implementation, the first connecting block has a first inclined surface on the side facing the second connecting block, and the second connecting block has a second inclined surface on the side facing the first connecting block, with the first inclined surface and the second inclined surface cooperating.

[0009] As an optional implementation, one of the reinforcing ribs has a third inclined surface that mates with the first connecting block, and the other reinforcing rib has a fourth inclined surface that mates with the second connecting block. The distance between the third inclined surface and the first inclined surface along the Z direction gradually decreases from the center of the box to the edge of the box. The fourth inclined surface is parallel to both the first inclined surface and the second inclined surface.

[0010] As an optional implementation, the first connecting block and the second connecting block are detachably connected to the lifting component.

[0011] As an optional implementation, the lifting component includes a fixed base and a fixing member. The fixed base is detachably connected to the first connecting block by a first bolt and to the second connecting block by a second bolt. The first bolt and the second bolt are spaced apart along the Z direction to fix the fixed base to the first connecting block and the second connecting block, forming a fixing group. The two fixing groups are spaced apart along the Y direction to fix the fixed base to the first connecting block and the second connecting block. The fixing member protrudes between the two fixing groups. The first connecting block contains a first dental sleeve, and the second connecting block contains a second dental sleeve.

[0012] As an optional implementation, along the Y direction, the width of the insert is smaller than the width of the receiving groove, and the battery pack further includes at least one sealing gasket, which is embedded in the cavity of the frame of the housing and seals against the insert along the Y direction.

[0013] Another aspect of the present invention discloses an electrical device including the battery pack described above.

[0014] Compared with the prior art, the advantages of the battery pack and electrical device of the present invention are as follows: The battery pack of this invention features a receiving groove on the frame of the housing. When the lifting assembly is installed on the frame, the insert can be placed in the receiving groove. The battery pack is then lifted by cooperating with the protruding lifting component and an external lifting machine. Since the insert is essentially hidden within the frame, the width of the lifting assembly protruding relative to the housing is reduced, thus achieving miniaturization of the entire pack size and facilitating installation on electrical equipment. At the same time, it avoids the need for additional welding components and other structures, and also reduces the overall weight of the pack. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. 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 structure according to an embodiment of the present invention; Figure 2 yes Figure 1 An exploded view of the battery pack in the diagram; Figure 3 yes Figure 2 Enlarged schematic diagram of point I in the middle; Figure 4 yes Figure 1 A top view of the battery pack; Figure 5 yes Figure 4 A cross-sectional view along the AA direction; Figure 6 yes Figure 5 Enlarged schematic diagram at point II; Figure 7 yes Figure 6 A three-dimensional schematic diagram of the hoisting components from one perspective; Figure 8 yes Figure 6 A three-dimensional schematic diagram of the hoisting components from another perspective; Figure 9 yes Figure 6 An exploded view of the hoisting components; Figure 10 This is a cross-sectional view of another embodiment of the hoisting assembly of the present invention.

[0017] Explanation of key figure labels: 100 - Battery pack, 10 - Battery module, 20 - Housing, 21 - Frame, 211 - First frame, 212 - Second frame, 22 - Receiving slot, 23 - Reinforcing rib, 231 - First reinforcing rib, 232 - Second reinforcing rib, 233 - Third inclined surface, 234 - Fourth inclined surface, 24 - Cavity, 30 - Lifting assembly, 31 - Embedded part, 311 - First connecting block, 3111 - First inclined surface, 3112 - First Force-bearing surface, 3113-groove, 312-second connecting block, 3121-second inclined surface, 3122-second force-bearing surface, 3123-protrusion, 32-lifting component, 321-fixed seat, 322-fixed component, 3221-lifting hole, 33-third force-bearing surface, 34-first toothed sleeve, 35-second toothed sleeve, 36-fourth force-bearing surface, 37-fixing assembly, 40-first bolt, 50-second bolt, 60-sealing gasket. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0022] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0023] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0024] When battery packs need to be installed on electrical equipment, such as in a car, due to their large size and weight, a lifting structure needs to be installed on the battery pack housing to facilitate cooperation with an external lifting machine. In the existing technology, the lifting structure is usually directly welded to the housing, which increases the size of the entire pack after the lifting structure is installed. Since the space for installing the battery pack on electrical equipment is compact and limited, a lifting structure that protrudes too much from the housing is not convenient for installing the battery pack on the electrical equipment.

[0025] Therefore, in order to solve the above technical problems, please refer to Figures 1 to 9 This application provides a battery pack 100, including a battery module 10, a housing 20, and a hoisting assembly 30.

[0026] Please refer to Figures 1 to 10 The battery module 10 includes multiple individual batteries arranged in parallel; the housing 20 is used to house the battery module 10, and the housing 20 has a receiving groove 22 on its side frame 21. The receiving groove 22 is defined as the Z direction along the height direction of the housing 20, the X direction along the depth direction of the receiving groove 22, and the Y direction along the width direction of the receiving groove 22; the hoisting assembly 30 includes an insert 31 and a hoisting member 32. The insert 31 is disposed in the receiving groove 22, and the hoisting member 32 and the insert 31 are detachably connected. The hoisting member 32 is configured to protrude from the housing 20 along the X direction and is connected to the insert 31 for use with an external hoisting machine.

[0027] The aforementioned battery pack 100, by providing a receiving groove 22 on the frame 21 of the housing 20, allows the insert 31 to be placed within the receiving groove 22 when the lifting assembly 30 is installed on the frame 21. The battery pack 100 is then lifted by cooperating with an external lifting machine through the protruding lifting member 32. Since the insert 31 is essentially hidden within the frame 21, the width of the entire lifting assembly 30 protruding relative to the housing 20 is reduced, thus achieving miniaturization of the overall pack size and facilitating installation on electrical equipment. At the same time, it avoids the need for additional welding components and other structures, and also reduces the overall weight of the pack.

[0028] The battery module 10 includes multiple battery rows arranged in parallel along the Y-direction or the X-direction. When the battery module 10 includes multiple battery rows arranged in parallel along the X-direction, each battery row includes multiple individual batteries arranged in parallel along the Y-direction; when the battery module 10 includes multiple battery rows arranged in parallel along the Y-direction, each battery row includes multiple individual batteries arranged in parallel along the X-direction. Individual batteries may include lithium-ion rechargeable batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and are not limited thereto; individual batteries may be cylindrical batteries, prismatic batteries, or flat elongated batteries, etc., and are not limited thereto.

[0029] The housing 20 includes a pair of oppositely arranged first frame 211 and a pair of oppositely arranged second frame 212. The first frame 211 and the second frame 212 are connected alternately in sequence. The first frame 211 extends in a first direction X, and the second frame 212 extends in a second direction Y. The hoisting assembly 30 can be set on the first frame 211, or it can be set on the second frame 212, or the hoisting assembly 30 can be set on both the first frame 211 and the second frame 212. It is not limited here.

[0030] Please see Figures 4 to 10To facilitate the installation of the insert 31 on the housing 20, the insert 31 can be fixed after being placed in the receiving groove 22, avoiding additional fixing methods. In this embodiment, the receiving groove 22 is a wedge-shaped groove. The height of the wedge-shaped groove along the Z direction gradually decreases from the center of the housing 20 to the edge of the housing 20. The groove wall of the receiving groove 22 is formed by two reinforcing ribs 23 of the frame 21 of the housing 20. The opening of the wedge-shaped groove is opened on the outer side wall of the frame 21 of the housing 20, and the opening of the wedge-shaped groove extends from one reinforcing rib 23 to the other reinforcing rib 23 along the Z direction. The insert 31 is a wedge-shaped part, which is detachably installed in the wedge-shaped groove. It includes a first connecting block 311 and a second connecting block 312 that are separately arranged. The first connecting block 311 and the second connecting block 312 respectively cooperate with the inclined surface of a groove wall of the wedge-shaped groove along the Z direction. Thus, on the one hand, after the insert 31 is embedded in the wedge-shaped groove, the first connecting block 311 and a reinforcing rib 23 are inclinedly engaged on one side along the Z direction, and the second connecting block 312 and another reinforcing rib 23 are inclinedly engaged on the side away from the first connecting block 311 along the Z direction. Since the height of the wedge-shaped groove gradually decreases from the center of the housing 20 to the edge of the housing 20 along the Z direction, the insert 31 is prevented from falling off relative to the receiving groove 22. Moreover, the wedge-shaped structure eliminates the need for additional structural connections between the insert 31 and the housing 20, simplifying the connection procedure between the lifting assembly 30 and the housing 20 and improving assembly efficiency. On the other hand, since no other connecting structures are provided between the insert 31 and the housing 20, it is convenient to disassemble the entire lifting assembly 30 relative to the housing 20 when the lifting assembly 30 is no longer needed. This allows the outer periphery of the housing 20 to be a continuous wall, and the lifting assembly 3 does not occupy additional space in the X or Y direction of the housing 20, thereby facilitating the storage of the battery pack 100.

[0031] In other implementations, the receiving groove 22 can be set as a regular square groove according to the molding requirements, thereby facilitating the opening and molding of the receiving groove 22. In this case, the entire lifting assembly 30 can be set as an integral structure, with the lifting assembly 30 embedded in the receiving groove 22. The lifting assembly 30 can be fixed to the box body 20 by welding, or the lifting assembly 30 is provided with connecting ears, which are fixed to the box body by bolts. Since the lifting assembly 30 and the receiving groove 22 have a regular square structure, it is easier to mold the receiving groove 22 and the lifting assembly 30, reducing the molding difficulty. Since the lifting assembly 30 is also embedded in the receiving groove 22, it also achieves the effect of reducing the size of the entire package along the X or Y direction.

[0032] For ease of explanation, the two reinforcing ribs 23 are defined as the first reinforcing rib 231 and the second reinforcing rib 232, respectively. The first reinforcing rib 231 and the first connecting block 311 are engaged at an angle, and the second reinforcing rib 232 and the second connecting block 312 are engaged at an angle. It should be noted that since the first reinforcing rib 231 and the second reinforcing rib 232 need to engage with the insert 31 to form a wedge-shaped positioning structure, the installation position of the hoisting assembly 30 can be automatically calibrated during assembly, avoiding uneven stress caused by misalignment. To ensure the structural strength of the entire housing 20, the wall thickness of the first reinforcing rib 231 and the second reinforcing rib 232 is greater than the wall thickness of other areas of the frame 21, such as... Figure 6 As shown, this ensures the fit strength with the insert 31, and optimizes the overall mechanical properties of the box through local thickening design, avoiding the weakening of the frame structure strength due to the opening of the receiving slot, thus achieving the design goal of reducing weight without reducing strength.

[0033] Specifically, please refer to Figure 6 and Figure 9 To enable the first connecting block 311 and the second connecting block 312 to be installed in the receiving groove 22, the first connecting block 311 has a first inclined surface 3111 on the side facing the second connecting block 312, and the second connecting block 312 has a second inclined surface 3121 on the side facing the first connecting block 311. The first inclined surface 3111 and the second inclined surface 3121 are engaged. One reinforcing rib 23, specifically the first reinforcing rib 231, has a third inclined surface 233 that engages with the first connecting block 311. The other reinforcing rib 23, specifically the second reinforcing rib 232, has a fourth inclined surface 234 that engages with the second connecting block 312. The engagement of the first inclined surface 3111 and the second inclined surface 3121 can be achieved in two ways: (1) Please refer to Figure 6 The first inclined plane 3111 and the second inclined plane 3121 are both parallel to the third inclined plane 233. The first inclined plane 3111 and the third inclined plane 233 are set at an angle, that is, at this time, the cross section of the second connecting block 312 along the XZ direction is a parallelogram, and the cross section of the first connecting block 311 along the XZ direction is a trapezoid.

[0034] (2) Please refer to Figure 10 The first inclined plane 3111 and the second inclined plane 3121 are both parallel to the fourth inclined plane 234, and the second inclined plane 3121 and the fourth inclined plane 234 are set at an angle. That is, at this time, the cross section of the second connecting block 312 along the plane XZ is trapezoidal, and the cross section of the first connecting block 311 along the plane XZ is parallelogram.

[0035] Thus, by setting one of the first connecting block 311 and the second connecting block 312 in a parallelogram shape along the XZ plane and the other in a trapezoid shape along the XZ plane, the first connecting block 311 and the second connecting block 312 can be detachably installed in the receiving groove 22. When the lifting component 32 is subjected to an upward pulling force along the Z direction, the first connecting block 311 and the second connecting block 312 can be prevented from detaching from the receiving groove 22.

[0036] Specifically, in this embodiment, the first connecting block 311 has a trapezoidal cross-section along the XZ plane, and the second connecting block 312 has a parallelogram cross-section along the XZ plane. The distance between the third inclined surface 233 and the first inclined surface 3111 along the Z direction gradually decreases from the center of the box 20 towards the edge of the box 20. The fourth inclined surface 234 is parallel to the first inclined surface 3111 and the second inclined surface 3121, forming a bidirectional constraint that restricts the rotation of the connecting blocks along the X and Z directions, preventing fatigue damage to the connecting blocks caused by torsion. At the same time, the combination design of the trapezoidal and parallelogram cross-sections of the connecting blocks makes the first connecting block 311 and the second connecting block 312 form an asymmetrical force-bearing structure, which can effectively resist the shear force and torsional moment generated by unexpected situations such as center of gravity shift and oblique lifting during the hoisting process.

[0037] Please see Figure 8 and Figure 9 In one embodiment of the present invention, in order to increase the stability of the fit between the first connecting block 311 and the second connecting block 312, one of the first connecting block 311 and the second connecting block 312 is provided with a groove 3113, and the other is provided with a protrusion 3123 that cooperates with the groove 3113. The protrusion 3123 is inserted into the groove 3113. By embedding the protrusion 3123 into the groove 3113, the contact area on the side where the first connecting block 311 and the second connecting block 312 are in contact is increased, so that the two can approach each other to form an integral structure, thereby increasing the stability of their embedding in the receiving groove 22 when the external hoisting machine is hoisting them.

[0038] For example, in one embodiment, a groove 3113 can be provided on the first connecting block 311, and a protrusion 3123 can be provided on the second connecting block 312; in another embodiment, a protrusion 3123 can be provided on the first connecting block 311, and a groove 3113 can be provided in the second connecting block 312, both of which can achieve the technical effect of interlocking. Specifically, in this embodiment, the first connecting block 311 is provided with a groove 3113, and the second connecting block 312 is provided with a protrusion 3123. Since the second connecting block 312 is located below the first connecting block 311 along the Z direction, after the first connecting block 311 and the second connecting block 312 are respectively placed in the receiving groove 22, the protrusion 3123 is inserted into the groove 3113, and the protrusion 3123 can provide support for the first connecting block 311. The insertion and engagement of the protrusion 3123 and the groove 3113 form a mechanical limiting structure, which can strictly limit the relative displacement and rotation of the first connecting block 311 and the second connecting block 312 in the X and Y directions. This prevents the two connecting blocks from misaligning or increasing the gap due to center of gravity shift, oblique lifting, or bumps and vibrations during transportation. At the same time, in conjunction with the previous inclined surface engagement structure, a dual constraint of inclined surface positioning and insertion limiting is formed, allowing the entire lifting assembly 30 to form an integrated force-bearing unit within the receiving groove 22. The structural stability is significantly better than that of the traditional splicing design, greatly reducing the risk of structural loosening after long-term use.

[0039] In one embodiment of the present invention, both the groove 3113 and the protrusion 3123 are triangular. Since the width of the cross-section along the YZ direction of the triangle gradually increases along the Z direction, and it has a sharp end, it serves as a guide, facilitating the rapid insertion of the protrusion 3123 into the groove 3113. In other embodiments, the protrusion 3123 and the groove 3113 can be respectively set as square, trapezoidal, or other shapes, which are not limited here.

[0040] Please see Figures 7 to 9 In one embodiment of the present invention, in order to ensure the connection strength between the entire embedded member 31 and the lifting member 32, the first connecting block 311 and the second connecting block 312 are detachably connected to the lifting member 32 at the same time. That is, the lifting member 32 has connection points with the first connecting block 311 and the second connecting block 312 respectively, so that when the lifting member 32 is subjected to tension, the tension is simultaneously distributed to the first connecting block 311 and the second connecting block 312.

[0041] When the lifting component 32 is detachably connected to the first connecting block 311 and the second connecting block 312, it can be achieved by bolt connection or by snap-fit ​​connection.

[0042] Specifically, to ensure the connection stability between the lifting component 32 and the first connecting block 311 and the second connecting block 312 respectively, the lifting component 32 includes a fixed base 321 and a fixing member 322. The fixed base 321 is detachably connected to the first connecting block 311 by a first bolt 40 and detachably connected to the second connecting block 312 by a second bolt 50. The first bolt 40 and the second bolt 50 are spaced apart along the Z direction to fix the fixed base 321 to the first connecting block 311 and the second connecting block 312, forming a fixing group 37. The two fixing groups 37 are spaced apart along the Y direction to fix the fixed base 321 to the first connecting block 311 and the second connecting block 312, and the fixing member 322 protrudes from the two fixing groups. Between 37; a first dental sleeve 34 is pre-embedded in the first connecting block 311, and a second dental sleeve 35 is pre-embedded in the second connecting block 312. In this way, by first pre-embedding the first dental sleeve 34 and the second dental sleeve 35 in the first connecting block 311 and the second connecting block 312 respectively, it is convenient to connect the fixing seat 321 to the first connecting block 311 and the second connecting block 312 respectively by the first bolt 40 and the second bolt 50. Furthermore, by forming two fixing groups 37 along the Y direction with the first bolt 40 and the second bolt 50 and protruding the fixing member 322 between the two fixing groups 37, when the fixing member 322 is subjected to tension, the tension can be dispersed to the outside of the fixing member 322, avoiding the concentration of tension.

[0043] Understandably, in order to facilitate the installation of the whole assembly consisting of the first connecting block 311 and the second connecting block 312 in the receiving groove 22, the length along the Y direction and the width along the X direction of the side of the first connecting block 311 and the second connecting block 312 facing the center of the housing 20, as well as the length along the Y direction and the width along the X direction of the side of the first connecting block 311 and the second connecting block 312 facing the outer surface of the housing 20, are all smaller than the width and length of the receiving groove 22 at the corresponding positions, so as to realize the installation of the first connecting block 311 and the second connecting block 312 in the receiving groove 22.

[0044] Therefore, please refer to Figure 2 and Figure 3 In one embodiment of the present invention, in order to prevent impurities from entering the receiving groove 22, the width of the insert 31 along the Y direction is smaller than the width of the receiving groove 22. The battery pack 100 also includes at least one sealing gasket 60. The sealing gasket 60 is embedded in the cavity 24 of the frame 21 of the housing 20 and seals against the insert 31 along the Y direction. In this way, by providing a sealing gasket 60 in the housing 20 along the Y direction, on the one hand, the friction between the sealing gasket 60 and the first connecting block 311 and the second connecting block 312 is large, which prevents the first connecting block 311 and the second connecting block 312 from moving in the receiving groove 22; on the other hand, the sealing abutment between the sealing gasket 60 and the insert 31 is equivalent to sealing the receiving groove 22, reducing the entry of impurities into the receiving groove 22.

[0045] It should be noted that the frame 21 of the housing 20 is also provided with a cavity 24, which is connected to the receiving groove 22 and is located on at least one side of the receiving groove 22 along the Y direction for accommodating the sealing gasket 60. Specifically, in this embodiment, cavities 24 are provided on both sides of the receiving groove 22 along the Y direction. The battery pack 100 also includes two sealing gaskets 60, one of which is located in one cavity 24. The two sealing gaskets 60 prevent the entire insert 31 from sliding relative to the receiving groove 22 by blocking the two sides along the Y direction, thereby further preventing the insert 31 from sliding relative to the receiving groove 22 and increasing the sealing performance of the entire receiving groove 22.

[0046] The sealing gasket 60 can be made of elastic materials such as foam or rubber.

[0047] It should be noted that, in order to facilitate the fixing of the fastener 322 and the external hoisting machine, a hoisting hole 3221 can be provided on the fastener 322 so that the connection with the external hoisting machine can be quickly realized through the hoisting hole 3221, thereby improving hoisting efficiency.

[0048] The installation process of the hoisting assembly 30 in this embodiment is as follows: (1) Place the two sealing gaskets 60 into the cavities 24 on both sides respectively; (2) Place the first connecting block 311 into the receiving groove 22; (3) Align the protrusion 3123 of the first connecting block 311 with the groove 3113 on the first connecting block 311, and install the second connecting block 312 into the receiving groove 22; (4) The hoisting component 32 is fixed to the first connecting block 311 and the second connecting block 312 by the first bolt 40 and the second bolt 50 respectively.

[0049] Please refer to Figures 7 to 9 In this embodiment, the way the insert 31 engages with the receiving groove 22 when subjected to an upward pulling force is as follows: The side of the first connecting block 311 facing away from the second connecting block 312 is the first force-bearing surface 3112, and the side of the second connecting block 312 facing away from the first connecting block 311 is the second force-bearing surface 3122. The sides of the first connecting block 311 and the second connecting block 312 facing the center of the housing 20 together form the third force-bearing surface 33. The two ends of the first connecting block 311 and the second connecting block 312 facing the sealing gasket 60 along the Y direction are two fourth force-bearing surfaces 36. The first force-bearing surface 3112 and the second force-bearing surface 3122 cooperate to restrict the movement of the insert 31 relative to the receiving groove 22 in the Z and X directions. The third force-bearing surface 33 restricts the movement of the insert 31 in the X direction toward the center of the housing 20. The two fourth force-bearing surfaces 36 on the left and right sides restrict the movement of the insert 31 in the Y direction, thereby ensuring the stability of the insert 31 in the receiving groove 22.

[0050] The aforementioned battery pack 100, by setting the insert 31 as a wedge-shaped member, including a first connecting block 311 and a second connecting block 312, and the receiving groove 22 as a wedge-shaped groove, allows the entire insert 31 to be detachably connected within the receiving groove 22. The lifting member 32 is detachably connected to the first connecting block 311 and the second connecting block 312 respectively. When the lifting assembly 30 is not needed, the entire lifting assembly 30 can be easily disassembled relative to the housing 20, avoiding increasing the overall installation size of the battery pack 100. By providing a protrusion 3123 and a groove 3113 between the first connecting blocks 311, the contact area between them is increased, enhancing the stability of the fit. By providing a sealing gasket 60 inside the housing 20 that contacts the insert 31, impurities are prevented from entering the receiving groove 22, increasing the friction of the insert 31 within the receiving groove 22 and preventing the insert 31 from sliding relative to the housing 20 during lifting.

[0051] In another embodiment of the present invention, an electrical device is also provided, including the battery pack 100 described above.

[0052] Among them, the electrical equipment can be vehicles or spacecraft, etc.; or the battery pack 100 can be used to assemble energy storage boxes, etc., and the vehicle can be a pure electric vehicle or a hybrid vehicle, etc., that requires the installation of the battery pack 100.

[0053] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A battery pack (100), characterized in that, include: Battery module (10); A housing (20) is provided for accommodating the battery module (10). The housing (20) has a receiving groove (22) on its side frame (21). The receiving groove (22) is defined as the Z direction along the height direction of the housing (20), the X direction along the depth direction of the receiving groove (22), and the Y direction along the width direction of the receiving groove (22). The hoisting assembly (30) includes an insert (31) and a hoisting member (32), the insert (31) being disposed within the receiving groove (22), the hoisting member (32) and the insert (31) being detachably connected, the hoisting member (32) being configured to protrude from the housing (20) along the X direction and being connected to the insert (31) for use with an external hoisting machine.

2. The battery pack (100) according to claim 1, characterized in that, The receiving groove (22) is a wedge-shaped groove. The height of the wedge-shaped groove along the Z direction gradually decreases from the center of the box (20) towards the edge of the box (20). The groove wall of the receiving groove (22) is formed by two reinforcing ribs (23) of the frame (21) of the box (20). The opening of the wedge-shaped groove is opened on the outer side wall of the frame (21) of the box (20), and the opening of the wedge-shaped groove extends along the Z direction from one of the reinforcing ribs (23) to the other reinforcing rib (23). The insert (31) is a wedge-shaped component, which is detachably disposed in the wedge-shaped groove. It includes a first connecting block (311) and a second connecting block (312) that are separately disposed. The first connecting block (311) and the second connecting block (312) respectively cooperate with a groove wall of the wedge-shaped groove along the Z direction.

3. The battery pack (100) according to claim 2, characterized in that, One of the first connecting block (311) and the second connecting block (312) is provided with a groove (3113), and the other is provided with a protrusion (3123) that cooperates with the groove (3113). The protrusion (3123) is inserted into the groove (3113).

4. The battery pack (100) according to claim 3, characterized in that, Both the groove (3113) and the protrusion (3123) are triangular.

5. The battery pack (100) according to any one of claims 2-4, characterized in that, The first connecting block (311) has a first inclined surface (3111) on the side facing the second connecting block (312), and the second connecting block (312) has a second inclined surface (3121) on the side facing the first connecting block (311), and the first inclined surface (3111) and the second inclined surface (3121) cooperate with each other.

6. The battery pack (100) according to claim 5, characterized in that, One of the reinforcing ribs (23) has a third inclined surface (233) that mates with the first connecting block (311), and the other reinforcing rib (23) has a fourth inclined surface (234) that mates with the second connecting block (312). The distance between the third inclined surface (233) and the first inclined surface (3111) along the Z direction gradually decreases from the center of the box (20) toward the edge of the box (20). The fourth inclined surface (234) is parallel to the first inclined surface (3111) and the second inclined surface (3121), respectively.

7. The battery pack (100) according to any one of claims 2-4, characterized in that, The first connecting block (311) and the second connecting block (312) are detachably connected to the hoisting component (32).

8. The battery pack (100) according to claim 7, characterized in that, The hoisting component (32) includes a fixed base (321) and a fixing member (322). The fixed base (321) is detachably connected to the first connecting block (311) by a first bolt (40) and to the second connecting block (312) by a second bolt (50). The first bolt (40) and the second bolt (50) are spaced apart along the Z direction to fix the fixed base (321) to the first connecting block (311) and the second connecting block (312) and form a fixing group (37). The two fixing groups (37) are spaced apart along the Y direction to fix the fixed base (321) to the first connecting block (311) and the second connecting block (312). The fixing member (322) protrudes between the two fixing groups (37). The first connecting block (311) has a first dental sleeve (34) embedded in it, and the second connecting block (312) has a second dental sleeve (35) embedded in it.

9. The battery pack (100) according to any one of claims 1-4, characterized in that, Along the Y direction, the width of the insert (31) is smaller than the width of the receiving groove (22), and the battery pack (100) also includes at least one sealing gasket (60), which is embedded in the cavity (24) of the frame (21) of the housing (20) and seals against the insert (31) along the Y direction.

10. An electrical appliance, characterized in that, include: The battery pack (100) as described in any one of claims 1-9.

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