Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, and belongs to the technical field of battery packs. The battery pack comprises a frame, a containing cavity with an opening is defined by the frame, a first mounting hole is formed in the frame, the battery pack has a first direction, and the first mounting hole penetrates through the frame in the first direction; the connecting sleeve is embedded in the first mounting hole, and a first through hole is formed in the connecting sleeve; the cover body covers the containing cavity, a second through hole is formed in the cover body, and the second through hole is opposite to the first through hole; and the fastener penetrates through the first through hole and the second through hole and is connected with the cover body and the frame, and the fastener protrudes out of the cover body along the first direction so as to connect the frame to the electric equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack and electrical equipment. Background Art

[0002] As the power source of electric vehicles, battery packs provide electrical energy. They typically consist of a frame and battery cells, which are housed within the frame and secured and protected.

[0003] Existing battery packs usually have a mounting mechanism on the frame, and the battery pack is connected to the vehicle body through the mounting mechanism to fix the battery pack.

[0004] However, the installation of the mounting mechanism increases the weight and cost of the battery pack. Furthermore, the mounting mechanism occupies space outside the battery pack, resulting in a smaller number of cells that can be arranged within the same space, thus affecting the space utilization of the battery pack. Utility Model Content

[0005] The present utility model provides a battery pack and electrical equipment to solve or at least partially solve the problems existing in the prior art, that is, the battery pack is connected to the vehicle body by a mounting mechanism, resulting in a heavy battery pack, a high cost of the battery pack, and a small number of single cells that can be arranged in the battery pack under the same space, resulting in low space utilization of the battery pack.

[0006] In order to solve the above technical problems, the utility model is achieved as follows:

[0007] In the first aspect, the utility model provides a battery pack having a first direction, a second direction and a third direction intersecting each other, and the battery pack includes: a frame, which encloses a accommodating cavity with an open opening, and a first mounting hole is provided on the frame, and the first mounting hole passes through the frame along the first direction; a connecting sleeve, which is embedded in the first mounting hole, and a first through hole is provided in the connecting sleeve; a cover body, which covers the accommodating cavity, and a second through hole is provided on the cover body, and the second through hole is arranged opposite to the first through hole; a fastener, which is passed through the first through hole and the second through hole and connects the cover body and the frame, and the fastener protrudes from the cover body along the first direction to connect the frame to the electrical equipment.

[0008] In a second aspect, the present invention further provides an electrical device, comprising an electrical device body and the battery pack described in the first aspect, wherein the fastener of the battery pack is connected to the electrical device body.

[0009] In the present invention, a first mounting hole is provided on the frame, a connecting sleeve is embedded in the first mounting hole, and a first through hole is provided in the connecting sleeve. A second through hole is provided on the cover body, and the second through hole is provided opposite to the first through hole. A fastener is passed through the first through hole and the second through hole and connects the cover body and the frame, and the fastener protrudes from the cover body along the first direction, thereby connecting the frame of the battery pack to the electrical equipment. The fastener can realize multiple connection functions, and the battery pack no longer needs to be provided with a mounting mechanism, thereby reducing the weight of the battery pack and reducing the cost of the battery pack. Moreover, more single cells can be arranged in the battery pack under the same space, thereby improving the space utilization of the battery pack. In addition, the provision of the connecting sleeve can enhance the strength of the frame, and avoid the problem that the fastener directly passes through the first mounting hole to connect the frame to the cover body, resulting in loss of frame strength and affecting the reliability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram showing the structure of the battery pack according to an embodiment of the present invention;

[0011] Figure 2 A schematic diagram showing the structure of the battery pack in an embodiment of the present invention with the cover hidden;

[0012] Figure 3 express Figure 2 A partial enlarged view of Figure I;

[0013] Figure 4 A partial cross-sectional view of the battery pack in the AA direction according to an embodiment of the present invention Figure 1 ;

[0014] Figure 5 A partial cross-sectional view of the battery pack in the AA direction according to an embodiment of the present invention Figure 2 ;

[0015] Figure 6 A partial cross-sectional view of the battery pack in the AA direction according to an embodiment of the present invention Figure 3 ;

[0016] Figure 7 A partial cross-sectional view of the battery pack in the AA direction according to an embodiment of the present invention Figure 4 ;

[0017] Figure 8 A partial cross-sectional view of the battery pack in the AA direction according to an embodiment of the present invention Figure 5 ;

[0018] Figure 9 A schematic structural diagram showing the frame described in an embodiment of the present utility model;

[0019] Figure 10 express Figure 9Top view of middle II;

[0020] Figure 11 express Figure 9 Top view of Figure III.

[0021] Reference numerals:

[0022] 1: cover; 101: second through hole;

[0023] 2: Battery module;

[0024] 3: seal;

[0025] 4: Frame; 401: Accommodation cavity; 402: First mounting hole; 403: First side surface; 404: Second side surface; 405: First energy absorption cavity; 406: Second energy absorption cavity; 407: First reinforcing rib; 408: Second reinforcing rib; 409: First groove; 410: Second groove;

[0026] 5: bottom plate; 501: third through hole;

[0027] 6: Fastener; 601: Bolt; 602: Nut;

[0028] 7: connecting sleeve; 701: first through hole;

[0029] 8: Limiting member; 81: Third side surface; 82: Fourth side surface; 801: Sleeve; 802: Connecting portion;

[0030] 9: Inlay;

[0031] H: first direction; K: second direction; J: third direction. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the fixed scope of the present invention.

[0033] In this application, the term "parallel" includes not only absolute parallelism but also the generally recognized parallelism in engineering practice, such as "parallel" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°. At the same time, "perpendicular" also includes not only absolute perpendicularity but also the generally recognized perpendicularity in engineering practice, such as "perpendicular" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distances or equal angles include not only absolute equality but also the generally recognized equality in engineering practice, which may include a certain error, such as a tolerance range of -1% to 1%.

[0034] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0035] Reference Figure 1 , shows a schematic structural diagram of the battery pack in an embodiment of the present utility model; Figure 2 , shows a schematic structural diagram of the battery pack in an embodiment of the present invention with the cover hidden; Figure 3 , showing Figure 2 Partial enlarged view of Figure 1; see Figure 4 , showing a partial cross-sectional view of the battery pack in the AA direction in the embodiment of the present invention Figure 1 ;reference Figure 5 , showing a partial cross-sectional view of the battery pack in the AA direction in the embodiment of the present invention Figure 2 ;reference Figure 6 , showing a partial cross-sectional view of the battery pack in the AA direction in the embodiment of the present invention Figure 3 ;reference Figure 7 , showing a partial cross-sectional view of the battery pack in the AA direction in the embodiment of the present invention Figure 4 ;reference Figure 8 , showing a partial cross-sectional view of the battery pack in the AA direction in the embodiment of the present invention Figure 5 ;reference Figure 9 , shows a schematic structural diagram of the frame in the embodiment of the present utility model; Figure 10 , showing Figure 9 Top view of II; see Figure 11 , showing Figure 9 Top view of Figure III.

[0036] like Figures 1 to 11As shown, an embodiment of the present invention discloses a battery pack having a first direction H, a second direction K and a third direction J that intersect in pairs, the battery pack including a frame 4, the frame 4 enclosing an open accommodating cavity 401, a first mounting hole 402 being provided on the frame 4, the thickness direction of the battery pack being the first direction H, the first mounting hole 402 passing through the frame 4 along the first direction H; a connecting sleeve 7, the connecting sleeve 7 being embedded in the first mounting hole 402, the connecting sleeve 7 being provided with a first through hole 701; a cover body 1, covering the accommodating cavity 401, the cover body 1 being provided with a second through hole 101, the second through hole 101 being arranged opposite to the first through hole 701 along the first direction H; a fastener 6, the fastener 6 being passed through the first through hole 701 and the second through hole 101 and connecting the cover body 1 and the frame 4, and the fastener 6 protruding from the cover body 1 along the first direction H to connect the frame 4 to the electrical equipment.

[0037] The present invention discloses a battery pack that can be connected to an electrical device to provide electrical energy to the device. It should be noted that the electrical device in the present invention can be a vehicle, an electronic device, or any other device that requires electricity. In the present invention, there is no restriction on the specific type of electrical device; any electrical device can be used. The following description will use a vehicle as an example.

[0038] like Figures 1 to 11 As shown, the battery pack disclosed in the embodiment of the present invention includes a frame 4, a connecting sleeve 7, a cover 1, and a fastener 6. The frame 4 defines an open accommodating cavity 401, in which the battery module 2 is mounted. A first mounting hole 402 is provided on the frame 4, extending through the frame 4 along a first direction H. The first direction H is the thickness direction of the battery pack. It is understood that the first mounting hole 402 extends through the frame 4 along the thickness direction of the battery pack.

[0039] like Figures 1 to 11 As shown, the connecting sleeve 7 is embedded in the first mounting hole 402 and has a first through hole 701 defined therein. The first through hole 701 extends through the connecting sleeve 7 along a first direction H. Embedding the connecting sleeve 7 in the first mounting hole 402 enhances the strength of the frame 4. Furthermore, the first through hole 701 is defined within the connecting sleeve 7, and the inner wall of the first through hole 701 is smooth, facilitating insertion of the fastener 6 therethrough.

[0040] like Figures 1 to 11As shown, the cover 1 in the embodiment of the present invention is placed over the accommodating cavity 401, and the accommodating cavity 401 is sealed by the cover 1 to protect the battery module 2. A second through hole 101 is provided on the cover 1. When the cover 1 is placed over the accommodating cavity 401, the second through hole 101 and the first through hole 701 are arranged opposite each other. The fastener 6 is then passed through the first through hole 701 and the second through hole 101 and connected to the cover 1 and the frame 4. Furthermore, along the first direction A, the fastener 6 protrudes from the cover 1. The portion of the fastener 6 protruding from the cover 1 is connected to an electrical device, thereby connecting the frame 4 to the electrical device.

[0041] It should be noted that the fasteners 6 and the connecting sleeves 7 in the embodiment of the present invention can include multiple ones. Accordingly, it is also necessary to set a plurality of first mounting holes 402 on the frame 4, and embed a connecting sleeve 7 in each first mounting hole 402. A plurality of second through holes 101 are also provided on the cover body 1, and each second through hole 101 is corresponding to a first through hole 701 of a connecting sleeve 7. Each fastener 6 is passed through the corresponding first through hole 701 and the corresponding second through hole 101 and connected to the cover body 1 and the frame 4, and each fastener 6 protrudes from the cover body 1 along the first direction H, and the part of each fastener 6 protruding from the cover body 1 is connected to the electrical equipment, so that the frame 4 of the battery pack is connected to the electrical equipment through multiple fasteners 6, so as to further improve the reliability of the connection between the battery pack and the electrical equipment.

[0042] In an embodiment of the present invention, a first mounting hole 402 is provided on the frame 4, a connecting sleeve 7 is embedded in the first mounting hole 402, and a first through hole 701 is provided in the connecting sleeve 7. A second through hole 101 is provided on the cover 1, and the second through hole 101 is arranged opposite to the first through hole 701. The fastener 6 is passed through the first through hole 101 and the second through hole 701 and connects the cover 1 and the frame 4, and the fastener 6 protrudes from the cover 1 along the first direction H, thereby connecting the frame 4 of the battery pack to the electrical device. The battery pack no longer has a mounting mechanism, which can reduce the weight of the battery pack and reduce the cost of the battery pack. In addition, more single cells can be arranged in the battery pack under the same space, thereby improving the space utilization of the battery pack. Furthermore, the provision of the connecting sleeve 7 can enhance the strength of the frame 4, avoiding the problem that the fastener 6 directly passes through the first mounting hole 402 to connect the frame 4 to the cover 4, resulting in a loss of strength of the frame 4 and affecting the reliability of the battery pack.

[0043] In some embodiments, the connecting sleeve 7 is embedded in the first mounting hole 401 , including the connecting sleeve 7 being inserted into the first mounting hole 401 , or the connecting sleeve 7 and the frame 4 being integrally formed.

[0044] Alternatively, as Figures 1 to 3As shown, the first through hole 701 in the embodiment of the present invention has an axial centerline along the first direction H, and along the second direction K, the frame 4 has a first side surface 403 away from the accommodating cavity 401 and a second side surface 404 close to the accommodating cavity 401; the maximum distance between the axial centerline and the first side surface 403 is D1 mm, and the maximum distance between the axial centerline and the second side surface 404 is D2 mm, satisfying: D1>D2; wherein, the second direction K intersects with the first direction H.

[0045] like Figures 1 to 3 As shown, along a second direction K intersecting the first direction H, the frame 4 has a first side surface 403 away from the accommodating cavity 401 and a second side surface 404 close to the accommodating cavity 401. It can be understood that the first side surface 403 is the outer wall of the frame 4, and the second side surface 404 is the inner wall of the accommodating cavity 401.

[0046] like Figure 3 As shown, in this embodiment of the present invention, the maximum distance D1 between the axis of the first through hole 701 and the first side surface 403 is set to be greater than the maximum distance D2 between the axis of the first through hole 701 and the second side surface 404. This further improves the strength of the frame 4 and avoids the problem of frame 4 strength loss affecting the reliability of the battery pack.

[0047] Alternatively, as Figures 9 to 11 As shown, the battery pack in the embodiment of the present invention also includes: an insert 9, wherein a first groove 409 is provided on the frame 4, the first groove 409 passes through the frame 4 along the first direction H, and the insert 9 is embedded in the first groove 409; the first mounting hole 402 passes through the insert 9 along the first direction H.

[0048] like Figures 9 to 11 As shown, in the embodiment of the present invention, a first groove 409 is provided on the frame 4, and the first groove 409 penetrates the frame 4 along the first direction H. The insert 9 is embedded in the first groove 409, and a first mounting hole 402 is provided on the insert 9, so that the first mounting hole 402 penetrates the insert 9 along the first direction H. The insert 9 further enhances the strength of the frame 4, allowing the frame 4 to withstand strong forces.

[0049] It should be noted that the insert 9 and the frame 4 can be made of different materials, and the strength of the insert 9 material can be greater than that of the frame 4 material. This ensures that the frame 4 meets the required load-bearing strength while reducing the cost of the battery pack and meeting the requirement for lightweight battery packs. Furthermore, the insert 9 can be connected to the first groove 409 by welding, riveting, gluing, or other methods to enhance the reliability of the connection between the insert 9 and the frame 4.

[0050] The shape of the insert 9 is adapted to the shape of the first groove 409. For example, when the insert 9 is cylindrical, the first groove 409 is also cylindrical. When the insert 9 is rectangular, the first groove 409 is also rectangular. Of course, in the embodiments of the present invention, there are no excessive restrictions on the specific shapes of the insert 9 and the first groove 409. In actual applications, technicians can set them as needed.

[0051] Alternatively, as Figures 4 to 9 As shown, a first energy absorbing cavity 405 is provided in the frame 4 in the embodiment of the present invention. The first energy absorbing cavity 405 is provided on a side of the first mounting hole 402 away from the accommodating cavity 401 , and the first energy absorbing cavity 405 extends along the third direction J.

[0052] like Figures 4 to 9 As shown, a first energy-absorbing cavity 405 is provided within the frame 4. The first energy-absorbing cavity 405 is located on a side of the first mounting hole 402 away from the accommodating cavity 401 and extends along a third direction J that intersects the first direction H and the second direction K. When the battery pack encounters a side impact, the first energy-absorbing cavity 405 collapses under the impact force and absorbs part of it, thereby dispersing the force on the battery pack and protecting it.

[0053] It should be noted that multiple first energy-absorbing cavities 405 can be provided within the frame 4, spaced apart along the first direction H. When the battery pack encounters a side impact, the multiple first energy-absorbing cavities 405 can collapse under the impact force and absorb part of the impact force, thereby further dispersing the force on the battery pack and providing better protection for the battery pack.

[0054] Alternatively, as Figures 4 to 9 As shown, a first reinforcing rib 407 and a second reinforcing rib 408 are provided in the frame 4, wherein the first reinforcing rib 407 is connected to the inner wall of the frame 4 along the first direction H, and the second reinforcing rib 408 is connected to the inner wall of the frame 4 along the second direction K, so as to form a plurality of first energy absorption cavities 405 arranged at intervals in the frame 4.

[0055] like Figures 4 to 9 As shown, the frame 4 is a square tubular structure, and the first reinforcing rib 407 is connected to the inner wall of the frame 4 along the first direction H, and the second reinforcing rib 408 is connected to the inner wall of the frame 4 along the second direction K, so that the inner cavity of the frame 4 is divided into multiple areas by the first reinforcing rib 407 and the second reinforcing rib 408, forming a plurality of first energy absorption cavities 405 arranged at intervals in the frame 4.

[0056] In the embodiment of the present invention, the inner cavity of the frame 4 is divided into multiple areas by the first reinforcing ribs 407 and the second reinforcing ribs 408, thereby forming multiple first energy-absorbing cavities 405 arranged at intervals within the frame 4. Furthermore, the provision of the first reinforcing ribs 407 and the second reinforcing ribs 408 can further enhance the strength of the frame 4.

[0057] Alternatively, as Figures 4 to 8 As shown, a second energy absorbing cavity 406 is provided in the frame 4 in the embodiment of the present invention. The second energy absorbing cavity 406 penetrates the frame 4 along the first direction H; the connecting sleeve 7 is inserted into the second energy absorbing cavity 406 .

[0058] like Figures 4 to 8 As shown, a second energy-absorbing cavity 406 can also be provided within the frame 4. The second energy-absorbing cavity 406 extends through the frame 4 along the first direction H. The connecting sleeve 7 is inserted into the second energy-absorbing cavity 406 to connect the frame 4 to the electrical device via the second energy-absorbing cavity 406. Furthermore, when the frame 4 encounters a collision, the second energy-absorbing cavity 406 can collapse under the impact force and absorb part of the collision force, thereby dispersing the force on the battery pack and protecting the battery pack.

[0059] Alternatively, as Figure 1 、 Figures 4 to 8 As shown, the battery pack in the embodiment of the present invention further includes a seal 3, wherein the seal 3 abuts between the frame 4 and the cover 1, or the seal 3 abuts between the connecting sleeve 7 and the cover 1, or one side of the seal 3 abuts against the connecting sleeve 7 and the frame 4, and the other side abuts against the cover 1. The fastener 6 passes through the seal 3.

[0060] like Figure 1 、 Figures 4 to 8 As shown, in the embodiment of the present invention, a seal 3 is provided between the frame 4 and the cover 1 to prevent external moisture, impurities, etc. from entering the accommodating cavity 401 and affecting the battery module 2 through the seal 3 .

[0061] It should be noted that the sealing member 3 in the embodiment of the present invention can be sealing foam or sealant. In the embodiment of the present invention, there are no excessive restrictions on the specific material of the sealing member 3. In actual applications, technicians can choose according to their needs.

[0062] Alternatively, as Figures 4 to 8 As shown, on a plane perpendicular to the first direction H, the projection of the second through hole 101 at least partially overlaps with the projection of the first through hole 701 ; the sealing member 3 is arranged around the first through hole 701 and the second through hole 101 .

[0063] like Figures 4 to 8As shown, on a plane perpendicular to the first direction H, the projection of the second through hole 101 and the projection of the first through hole 701 at least partially overlap. In other words, along the first direction H, the second through hole 101 and the first through hole 701 are at least partially opposite each other. This allows the fastener 6 to pass through the second through hole 101 and the first through hole 701 and connect to the frame 4 and the cover 1.

[0064] In the embodiment of the present invention, the seal 3 is arranged around the first through hole 701 and the second through hole 101 so that the seal 3 can extend between the frame 4 and the cover 1, thereby sealing the gap between the frame 4 and the cover 1 and improving the safety of the battery pack.

[0065] Furthermore, the arrangement of the sealing member 3 can increase the height of the accommodating cavity 401 along the first direction H, thereby increasing the space of the accommodating cavity 401, so that more single cells can be arranged in the accommodating cavity 401, and the space utilization rate of the battery pack is higher.

[0066] Alternatively, as Figures 4 to 8 As shown, the battery pack in the embodiment of the present invention also includes: a limit member 8, wherein, along the first direction H, the limit member 8 has a third side 81 and a fourth side 82 that are opposite to each other, the third side 81 abuts against the cover body 1, and the fourth side 82 abuts against the frame 4 and the connecting sleeve 7; the limit member 8 is arranged around the first through hole 701 and the second through hole 101, and the seal 3 is located on the side of the limit member 8 away from the first through hole 701. Specifically, the seal 3 is located on the outer peripheral side of the limit member 8, and the seal 3 is arranged around the limit member 8 to limit the thickness of the seal 3 by the limit member 8.

[0067] like Figures 4 to 8 As shown, in this embodiment of the present invention, a stopper 8 can be provided between the frame 4 and the cover 1. Specifically, the third side 81 of the stopper 8 can be brought into contact with the cover 1, while the fourth side 82 of the stopper 8 can be brought into contact with the frame 4 and the connecting sleeve 7. The stopper 8 limits the thickness of the seal 3, thereby controlling the compression of the seal 3 and preventing the seal 3 from being damaged by excessive pressure and thus failing to seal.

[0068] In this embodiment of the present invention, the stopper 8 can be disposed around the first through hole 701 and the second through hole 101, while the seal 3 is located on the side of the stopper 8 away from the first through hole 701. The seal 3 is disposed around the stopper 8. This allows the stopper 8 to limit the thickness of the seal 3, controlling the compression rate of the seal 3 and preventing the seal 3 from being damaged by excessive preload, thereby preventing the seal 3 from failing to seal. Furthermore, the seal 3 seals the gap between the frame 4 and the cover 1, preventing external moisture, impurities, etc. from entering the accommodating cavity 401, thereby improving the safety of the battery pack.

[0069] Alternatively, as Figure 7and Figure 8 As shown, along the first direction H, the connecting sleeve 7 at least partially extends out of the frame 4 and abuts against the cover body 1; the sealing member 3 is arranged around the portion of the connecting sleeve 7 extending out of the frame 4 to limit the thickness of the sealing member 3 through the portion of the connecting sleeve 7 extending out of the frame 4.

[0070] like Figure 7 and Figure 8 As shown, the connecting sleeve 7 is partially extended out of the frame 4 along the first direction H and abuts against the cover 1. The sealing member 3 is disposed around the portion of the connecting sleeve 7 extending out of the frame 4. This portion of the connecting sleeve 7 extending out of the frame 4 limits the thickness of the sealing member 3, controlling the compression of the sealing member 3 and preventing the sealing member 3 from being damaged by excessive preload, thereby preventing the sealing member 3 from failing to seal.

[0071] Furthermore, in the embodiment of the present invention, the thickness of the seal 3 can be directly limited by the portion of the connecting sleeve 7 extending out of the frame 4. There is no need to separately set a limiter 8, making the battery pack structure simpler and more convenient to install.

[0072] Alternatively, as Figure 5 As shown, the limiting member 8 in the embodiment of the present invention includes a sleeve 801 and a connecting portion 802 that is connected to the end of the sleeve 801, wherein the sleeve 801 is inserted into the first through hole 701, one side of the connecting portion 802 abuts against the end of the connecting sleeve 7 and / or the frame 4, and the other side abuts against the cover body 1, and the fastener 6 passes through the sleeve 801.

[0073] like Figure 5 As shown, in this embodiment of the present invention, the sleeve 801 of the stopper 8 can be inserted into the first through hole 701, and the connecting portion 802 connected to the sleeve 801 can be positioned between the frame 4 and the cover 1. Specifically, one side of the connecting portion 802 can be abutted against the end of the connecting sleeve 7 and the frame 4, or one side of the connecting portion 802 can be abutted against the end of the connecting sleeve 7 and the frame 4, and the other side of the connecting portion 802 can be abutted against the cover 1, thereby positioning the connecting portion 802 between the frame 4 and the cover 1. The fastener 6 passes through the sleeve 801.

[0074] In an embodiment of the present invention, the sleeve 801 of the limiting member 8 is inserted into the first through hole 701 to limit the position of the limiting member 8 through the sleeve 801, thereby improving the installation efficiency of the limiting member 8 and avoiding the connection part 802 from being offset, which affects the installation of the battery pack.

[0075] Optionally, the hardness of the material used for the limiting member 8 is smaller than the hardness of the material used for the connecting sleeve 7 .

[0076] Optionally, the wear resistance of the material used for the limiting member 8 is greater than the wear resistance of the material used for the connecting sleeve 7 .

[0077] During use of the battery pack, the connecting sleeve 7 rubs against the inner wall of the first through hole 701 and the inner wall of the second through hole 101, causing a certain degree of wear on the connecting sleeve 7, the inner wall of the first through hole 701, or the inner wall of the second through hole 101. Long-term wear can damage the connecting sleeve 7, the frame 4, or the cover 1, requiring replacement of the connecting sleeve 7, the frame 4, or the cover 1.

[0078] In the embodiment of the present invention, the sleeve 801 of the stopper 8 is inserted into the first through hole 701, and the connecting portion 802 of the stopper 8 is disposed between the frame 4 and the cover 1. Furthermore, the hardness of the material used for the stopper 8 is set to be less than the hardness of the material used for the connecting sleeve 7, and the wear resistance of the material used for the stopper 8 is set to be greater than the wear resistance of the material used for the connecting sleeve 7, so as to reduce the wear of the connecting sleeve 7, the inner wall of the first through hole 701, and the inner wall of the second through hole 101, thereby extending the service life of the connecting sleeve 7, the frame 4, and the cover 1, and reducing the risk of failure of the connecting sleeve 7, the frame 4, and the cover 1.

[0079] Alternatively, as Figure 1 As shown, the frame 4 of the embodiment of the present invention is provided with a second groove 410 on the end surface close to the cover body 1 , and the sealing member 3 is at least partially accommodated in the second groove 410 .

[0080] like Figure 1 As shown, in an embodiment of the present invention, a second groove 410 can be provided on the end surface of the frame 4 close to the cover body 1, and the seal 3 can be at least partially accommodated in the second groove 410, so as to seal the gap between the frame 4 and the cover body 1 through the seal 3, thereby improving the sealing of the battery pack and preventing external moisture and impurities from entering the accommodating cavity 401 through the gap between the frame 4 and the cover body 1 and causing damage to the battery module 2.

[0081] Exemplarily, when the sealing member 3 is a sealant, the sealant can be filled into the second groove 410 so that the sealant overflows and flows into the gap between the frame 4 and the cover 1, thereby sealing the gap between the frame 4 and the cover 1 and improving the sealing of the battery pack.

[0082] Alternatively, as Figure 1 As shown, the battery pack in the embodiment of the present invention also includes a base plate 5, wherein the base plate 5 is arranged on the side of the frame 4 away from the cover body 1; a third through hole 501 is provided on the base plate 5, and the third through hole 501 is arranged opposite to the first through hole 701, and the fastener 6 passes through the third through hole 501, the first through hole 701 and the second through hole 101, and connects the base plate 5, the frame 4 and the cover body 1.

[0083] like Figure 1As shown, the bottom plate 5 in the embodiment of the present invention is arranged on the side of the frame 4 away from the cover body 1, and a third through hole 501 is provided on the bottom plate 5, and the third through hole 501 is arranged opposite to the first through hole 701. The fastener 6 is passed through the third through hole 501, the first through hole 701 and the second through hole 101, and partially extends out of the second through hole 101. The portion of the fastener 6 extending out of the second through hole 101 is connected to the electrical device, thereby connecting the bottom plate 5, the frame 4 and the cover body 1 to the electrical device. The bottom plate 5 in the embodiment of the present invention can close the end of the accommodating cavity 401 away from the cover body 1, thereby further protecting the battery module 2.

[0084] Alternatively, as Figures 1 to 3 As shown, the fastener 6 in the embodiment of the present invention includes a bolt 601 and a nut 602, the bolt 601 is passed through the third through hole 501, the first through hole 701 and the second through hole 101 and is connected to the base plate 5, the frame 4 and the cover body 1, and the bolt 601 protrudes from the cover body 1 along the first direction H; the nut 602 is connected to the part of the bolt 601 protruding from the cover body 1, and the maximum distance between the side of the nut 602 away from the cover body 1 along the first direction H and the cover body 1 is smaller than the maximum distance between the side of the bolt 601 away from the cover body 1 along the first direction H and the cover body 1.

[0085] like Figures 1 to 3 As shown, in the embodiment of the present invention, the bolt 601 is passed through the third through hole 501, the first through hole 701 and the second through hole 101, and connected to the bottom plate 5, the frame 4 and the cover 1. In addition, along the first direction H, the bolt 601 at least partially protrudes from the cover 1, and the portion of the bolt 601 protruding from the cover 1 is passed through a component of the electrical device and extends out of the component of the electrical device, and then the nut 602 is connected to the side of the component of the electrical device away from the battery pack, thereby connecting the battery pack to the electrical device through the bolt 601 and the nut 602. In addition, by controlling the matching length of the nut 602 and the bolt 601, after the nut is screwed into the bolt 601, a section of the bolt 601 can be left, and this section of the bolt 601 can be connected to the electrical device. Of course, this section of the bolt 601 can also have threads.

[0086] An embodiment of the present utility model discloses a battery pack, which includes: a frame, which forms a accommodating cavity with an open opening, a first mounting hole is provided on the frame, the thickness direction of the battery pack is the first direction, and the first mounting hole passes through the frame along the first direction; a connecting sleeve, which is embedded in the first mounting hole, and a first through hole is provided in the connecting sleeve; a cover body, which covers the accommodating cavity, and a second through hole is provided on the cover body, and the second through hole is arranged opposite to the first through hole; a fastener, which is passed through the first through hole and the second through hole and connects the cover body and the frame, and the fastener protrudes from the cover body along the first direction to connect the frame to the electrical equipment.

[0087] In an embodiment of the utility model, a first mounting hole is provided on the frame, a connecting sleeve is embedded in the first mounting hole, and a first through hole is provided in the connecting sleeve. A second through hole is provided on the cover body, and the second through hole is provided opposite to the first through hole. A fastener is passed through the first through hole and the second through hole and connects the cover body and the frame, and the fastener protrudes from the cover body along the first direction, thereby connecting the frame of the battery pack to the electrical equipment. The battery pack no longer has a mounting mechanism, thereby reducing the weight of the battery pack and reducing the cost of the battery pack. Moreover, more single cells can be arranged in the battery pack in the same space, thereby improving the space utilization of the battery pack. Furthermore, the provision of the connecting sleeve can enhance the strength of the frame, and avoid the problem that the fastener directly passes through the first mounting hole to connect the frame to the cover body, resulting in a loss of frame strength and affecting the reliability of the battery pack.

[0088] The embodiment of the present utility model further discloses an electric device, which includes an electric device body and the battery pack in the above embodiment, wherein the fastener 6 of the battery pack is connected to the electric device body.

[0089] The electric device in the embodiment of the present invention can be a vehicle, an electronic device, or any other electric device that needs to be powered by a battery pack. In the embodiment of the present invention, there is no restriction on the specific type of the electric device, and any electric device can be used.

[0090] It should be noted that in the embodiment of the present invention, the battery pack included in the electrical equipment has the same structure as the battery pack described in the above embodiment, and its beneficial effects are also similar, which will not be described in detail here.

[0091] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0092] Although alternative embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including alternative embodiments and all changes and modifications that fall within the scope of the present invention.

[0093] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity from another, and do not necessarily require or imply any actual relationship or order between these entities. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that an article or terminal device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the article or terminal device comprising the element.

[0094] The above is a detailed introduction to the technical solution provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. At the same time, for those skilled in the art, according to the principles and implementation methods of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A battery pack having a first direction (H), a second direction (K) and a third direction (J) intersecting each other, characterized in that: The battery pack comprises: A frame (4) enclosing an open accommodating cavity (401), wherein the frame (4) is provided with a first mounting hole (402), and the first mounting hole (402) penetrates the frame (4) along the first direction (H); A connecting sleeve (7), the connecting sleeve (7) being embedded in the first mounting hole (402), and a first through hole (701) being provided in the connecting sleeve (7); a cover body (1), covering the accommodating cavity (401), the cover body (1) being provided with a second through hole (101), the second through hole (101) and the first through hole (701) being arranged opposite to each other along the first direction (H); A fastener (6), wherein the fastener (6) is inserted into the first through hole (701) and the second through hole (101) and connects the cover body (1) and the frame (4), and the fastener (6) protrudes from the cover body (1) along the first direction (H) to connect the frame (4) to the electrical equipment.

2. The battery pack according to claim 1, characterized in that: The first through hole (701) has an axial centerline along the first direction (H); along the second direction (K), the frame (4) has a first side surface (403) away from the accommodating cavity (401) and a second side surface (404) close to the accommodating cavity (401); The maximum distance between the axis and the first side surface (403) is D1 mm, and the maximum distance between the axis and the second side surface (404) is D2 mm, satisfying: D1>D2.

3. The battery pack according to claim 1, characterized in that: The battery pack further comprises: an insert (9), wherein: The frame (4) is provided with a first groove (409), the first groove (409) penetrates the frame (4) along the first direction (H), and the insert (9) is embedded in the first groove (409); The first mounting hole (402) passes through the insert (9) along the first direction (H).

4. The battery pack according to claim 2, characterized in that: A first energy absorbing cavity (405) is provided in the frame (4), the first energy absorbing cavity (405) is provided on a side of the first mounting hole (402) away from the accommodating cavity (401), and the first energy absorbing cavity (405) extends along the third direction (J).

5. The battery pack according to claim 1, characterized in that: A second energy absorbing cavity (406) is provided in the frame (4), and the second energy absorbing cavity (406) penetrates the frame (4) along the first direction (H); The connecting sleeve (7) is inserted into the second energy absorbing cavity (406).

6. The battery pack according to claim 1, characterized in that: The battery pack further comprises: a sealing member (3), wherein: The sealing member (3) abuts between the frame (4) and the cover body (1), and / or the sealing member (3) abuts between the connecting sleeve (7) and the cover body (1); The fastener (6) passes through the sealing member (3).

7. The battery pack according to claim 6, characterized in that: The battery pack further comprises: a limiting member (8), wherein: Along the first direction (H), the limiting member (8) has a third side surface (81) and a fourth side surface (82) which are away from each other, the third side surface (81) abuts against the cover body (1), and the fourth side surface (82) abuts against the frame (4) and the connecting sleeve (7); The limiting member (8) is arranged around the first through hole (701) and the second through hole (101), the sealing member (3) is located on the outer ring side of the limiting member (8) away from the first through hole (701), and the sealing member (3) is arranged around the limiting member (8) so as to limit the thickness of the sealing member (3) by the limiting member (8).

8. The battery pack according to claim 6, characterized in that: Along the first direction (H), the connecting sleeve (7) at least partially extends out of the frame (4) and abuts against the cover body (1); The sealing member (3) is arranged around the portion of the connecting sleeve (7) extending out of the frame (4), so as to limit the thickness of the sealing member (3) by the portion of the connecting sleeve (7) extending out of the frame (4).

9. The battery pack according to claim 7, characterized in that: The stopper (8) comprises: a sleeve (801) and a connecting portion (802) surrounding and connected to the end of the sleeve (801), wherein: The sleeve (801) is inserted into the first through hole (701), one side of the connecting portion (802) abuts against the end of the connecting sleeve (7) and / or the frame (4), and the other side abuts against the cover body (1), and the fastener (6) passes through the sleeve (801).

10. The battery pack according to claim 9, characterized in that: The hardness of the limiting member (8) is smaller than the hardness of the connecting sleeve (7); And / or, the wear resistance of the limiting member (8) is greater than the wear resistance of the connecting sleeve (7).

11. The battery pack according to claim 6, characterized in that: A second groove (410) is provided on the end surface of the frame (4) close to the cover body (1), and the sealing member (3) is at least partially accommodated in the second groove (410).

12. The battery pack according to claim 1, characterized in that: The battery pack further comprises: a bottom plate (5), wherein: The bottom plate (5) is arranged on a side of the frame (4) away from the cover body (1); The bottom plate (5) is provided with a third through hole (501), the third through hole (501) being arranged opposite to the first through hole (701), the fastener (6) passing through the third through hole (501), the first through hole (701) and the second through hole (101), and connecting the bottom plate (5), the frame (4) and the cover body (1).

13. The battery pack according to claim 12, characterized in that: The fastener (6) comprises a bolt (601) and a nut (602); the bolt (601) is passed through the third through hole (501), the first through hole (701) and the second through hole (101) and is connected to the bottom plate (5), the frame (4) and the cover body (1); and the bolt (601) protrudes from the cover body (1) along the first direction (H); The nut (602) is connected to a portion of the bolt (601) protruding from the cover body (1), and a maximum distance between a side of the nut (602) away from the cover body (1) along the first direction (H) and the cover body (1) is smaller than a maximum distance between a side of the bolt (601) away from the cover body (1) along the first direction (H) and the cover body (1).

14. An electrical device, characterized in that: include: An electrical equipment body and a battery pack according to any one of claims 1 to 13, wherein: The fastener (6) of the battery pack is connected to the electrical equipment body.

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