Battery frame, battery device, and electric device

Abstract

The application discloses a battery frame, a battery device and a power utilization device. The battery frame comprises a first beam extending along a first direction, one end of the first beam being a first end, and a first cavity being formed in the first beam; a second beam extending along a second direction, one end of the second beam being a second end, and a second cavity being formed in the second beam, the first end being connected with the second end, and the first beam and the second beam defining a mounting cavity between opposite sides of the first beam and the second beam; a first connecting piece, one end of the first connecting piece being connected with an inner wall of the first cavity, and the other end being connected with an inner wall of the second cavity; and a second connecting piece connected between an outer circumferential surface of the first beam and an outer circumferential surface of the second beam. According to the battery frame, the first connecting piece and the second connecting piece are used for fixing the first beam and the second beam at different positions, the connecting strength of the first beam and the second beam can be improved, the probability of connection failure of the first beam and the second beam can be reduced, and the stability of the battery frame can be improved.

Description

Technical Field

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

[0002] In related technologies, when a battery device is impacted, the connection at the beam joint of the battery device is prone to failure. The beam moves inward and squeezes the battery cells, which increases the degree of damage to the battery device and makes the battery device less resistant to impact. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a battery frame and a battery device, as well as an electrical device incorporating the aforementioned battery device, wherein the battery frame can improve the impact resistance of the battery device.

[0004] In a first aspect, embodiments of this application provide a battery frame, comprising: a first beam extending along a first direction, one end of the first beam in the first direction being a first end, and a first cavity extending through the first end in the first direction being formed within the first beam; a second beam extending along a second direction intersecting the first direction, one end of the second beam in the second direction being a second end, and a second cavity extending through the second end in the second direction being formed within the second beam, the first end being connected to the second end, and a mounting cavity defining a space between opposite sides of the first beam and the second beam, the mounting cavity being used to mount a battery cell assembly; a first connector, one end of the first connector extending into the first cavity and connected to the inner wall of the first cavity, and the other end extending into the second cavity and connected to the inner wall of the second cavity; and a second connector connecting the outer peripheral surface of the first beam and the outer peripheral surface of the second beam.

[0005] In the above-described technical approach, the battery frame according to the embodiments of this application, by providing a first connector and a second connector, wherein the first connector supports and fixes the first beam and the second beam inside the first beam and the second beam, and the second connector supports and fixes the first beam and the second beam outside the first beam and the second beam, can improve the connection strength at the connection between the first beam and the second beam and the stability of the battery frame, thereby reducing the degree of damage to the battery device when it is impacted and improving the impact resistance of the battery device.

[0006] In some embodiments, the second connector is connected between the opposite sides of the first beam and the second beam.

[0007] In the above-mentioned technical approach, the difficulty of arranging the battery device on the power-consuming device can be reduced, and the first beam and the second beam can also protect the second connector, further reducing the probability of failure of the connection between the first beam and the second beam.

[0008] In some embodiments, the first connector has a first connecting segment with a first fixing hole formed thereon, the first connecting segment extending into the first cavity; the second connector has a second connecting segment with a second fixing hole formed thereon; a third fixing hole communicating with the first cavity is formed on the side of the first beam opposite to the second beam; the battery frame further includes a first fastener, the first fastener passing through the second fixing hole and the third fixing hole in sequence and connected to the first fixing hole, so that the first connecting segment is connected to the inner wall of the first cavity, and the side of the first beam opposite to the second beam is connected to the second connecting segment.

[0009] The above-mentioned technical approach can further reduce the stress concentration at the connection between the first beam and the second beam, thereby reducing the damage to the battery device when it is subjected to an impact.

[0010] In some embodiments, the first connector further includes a third connecting segment with a fourth fixing hole formed thereon, the third connecting segment extending into the second cavity; the second connector includes a fourth connecting segment with a fifth fixing hole formed thereon; a sixth fixing hole communicating with the second cavity is formed on the side of the second beam opposite to the first beam; the battery frame further includes a second fastener, the second fastener passing through the fifth fixing hole and the sixth fixing hole in sequence and connecting to the fourth fixing hole, so that the third connecting segment is connected to the inner wall of the second cavity and the side of the second beam opposite to the first beam is connected to the fourth connecting segment.

[0011] The above-mentioned technical approach can further reduce the stress concentration at the connection between the first beam and the second beam, thereby reducing the damage to the battery device when it is subjected to an impact.

[0012] In some embodiments, the battery frame further includes: an expansion beam disposed in the mounting cavity and spaced apart from the second beam in the first direction, one end of the expansion beam being a third end in the length direction, and a third cavity formed within the expansion beam extending through the third end in the length direction of the expansion beam; the battery frame further includes: a third connector, the third connector including a first connecting portion and a second connecting portion, the side of the first beam opposite to the second beam being connected to the first connecting portion, and the second connecting portion extending into the third cavity and connected to the inner wall of the third cavity.

[0013] In the above-mentioned technical approach, the space for arranging battery cells in the mounting cavity can be increased, thereby improving the energy density of the battery device. Furthermore, the connection area between the second connection part and the expansion beam can be increased, thereby improving the strength and reliability of the connection between the expansion beam and the first beam.

[0014] In some embodiments, the battery frame further includes: a fourth connector connected between the first connecting portion and the outer peripheral surface of the expansion beam; the fourth connector having a third connecting portion with a seventh fixing hole formed thereon; the first connecting portion having an eighth fixing hole formed thereon; and a ninth fixing hole communicating with the first cavity formed on the side of the first beam opposite to the second beam. The battery frame further includes: a third fastener passing through the seventh fixing hole, the eighth fixing hole, and the ninth fixing hole in sequence and connected to the first connector, so that the first connecting portion is connected to the first beam, and the fourth connector is connected to the first connecting portion.

[0015] The above-mentioned technical approach can further reduce the stress concentration at the connection between the first beam and the second beam, thereby reducing the damage to the battery device when it is subjected to an impact.

[0016] In some embodiments, the fourth connector further includes a fourth connecting portion, on which a tenth fixing hole is formed; the expansion beam has an eleventh fixing hole communicating with the third cavity on one side in the first direction; the second connecting portion has a twelfth fixing hole; the battery frame further includes a fourth fastener, which passes through the tenth fixing hole and the eleventh fixing hole in sequence and connects to the twelfth fixing hole, so that the fourth connecting portion is connected to the expansion beam; and the second connecting portion is connected to the inner wall of the third cavity.

[0017] The above-mentioned technical methods can further reduce the stress concentration on the battery frame and reduce the damage to the battery device when it is impacted.

[0018] Secondly, embodiments of this application provide a battery device, including a battery frame according to embodiments of this application.

[0019] In the above-described technical approach, the battery device according to the embodiments of this application, by setting the battery frame according to the embodiments of this application, can reduce the degree of damage to the battery device when it is impacted and improve the impact resistance of the battery device.

[0020] Thirdly, embodiments of this application provide an electrical device, including a battery device according to embodiments of this application.

[0021] In the above-described technical approach, the electrical device according to the embodiments of this application can improve its impact resistance by incorporating a battery device according to the embodiments of this application.

[0022] In some embodiments, the electrical device is a vehicle, and the first beam is formed as the door sill beam of the vehicle.

[0023] The above-mentioned technical methods can improve the energy density of the battery device, thereby increasing the vehicle's range.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an electrical device according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of a battery device according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of a battery frame according to an embodiment of this application;

[0028] Figure 4 yes Figure 3 An exploded view of the battery frame shown;

[0029] Figure 5 This is a cross-sectional view of the battery frame according to an embodiment of this application.

[0030] Figure label:

[0031] 1. Electrical appliances;

[0032] 1000. Battery device;

[0033] 100. Battery frame;

[0034] 10. First beam; 11. First cavity; 12. First end; 13. Mounting cavity; 14. Third fixing hole; 15. Ninth fixing hole;

[0035] 20. Second beam; 21. Second cavity; 22. Second end; 23. Sixth fixing hole;

[0036] 30. First connector; 31. First connecting segment; 311. First fixing hole; 32. Third connecting segment; 321. Fourth fixing hole;

[0037] 40. Second connector; 41. Second connecting section; 411. Second fixing hole; 42. Fourth connecting section; 421. Fifth fixing hole;

[0038] 50. First fastener; 51. Second fastener; 52. Third fastener; 53. Fourth fastener;

[0039] 60. Expansion beam; 61. Third cavity; 62. Third end; 63. Eleventh fixing hole;

[0040] 70. Third connecting member; 71. First connecting part; 711. Eighth fixing hole; 72. Second connecting part; 721. Twelfth fixing hole;

[0041] 80. Fourth connecting piece; 81. Third connecting part; 811. Seventh fixing hole; 82. Fourth connecting part; 821. Tenth fixing hole. Detailed Implementation

[0042] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0044] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0045] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0046] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0047] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0048] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0049] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0050] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include one or more battery cells, and when there are multiple battery cells, they are connected in series, parallel, or mixed connections via a busbar.

[0051] The technical solutions described in the embodiments of this application are applicable to various power devices that use battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0052] In related technologies, when a battery device is impacted, the connection at the beam joint of the battery device is prone to failure. The beam moves inward and squeezes the battery cells, which increases the degree of damage to the battery device and makes the battery device less resistant to impact.

[0053] Based on the above considerations, in order to improve the impact resistance of the battery device, the applicant has conducted in-depth research and designed a battery frame. The first beam and the second beam are connected inside by a first connector, and the outer surfaces of the first beam and the second beam are connected by a second connector. The first connector and the second connector support and fix the first beam and the second beam inside and outside the first beam and the second beam, respectively, thereby improving the connection strength at the connection between the first beam and the second beam, reducing the degree of damage to the battery device when it is impacted, and improving the impact resistance of the battery device.

[0054] This application provides an electrical device that uses the battery device disclosed herein as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0055] Figure 1 This is a schematic diagram of an electrical device according to an embodiment of this application; Figure 2 This is a schematic diagram of a battery device according to an embodiment of this application; Figure 3 This is a schematic diagram of a battery frame according to an embodiment of this application; Figure 4 yes Figure 3 An exploded view of the battery frame shown; Figure 5 This is a cross-sectional view of the battery frame according to an embodiment of this application.

[0056] The following is for reference. Figures 1-5 A battery frame 100 according to an embodiment of the first aspect of this application is described.

[0057] like Figures 3-5 As shown, the battery frame 100 includes: a first beam 10, a second beam 20, a first connector 30, and a second connector 40.

[0058] Specifically, the first beam 10 extends along a first direction, with one end of the first beam 10 in the first direction being a first end 12. A first cavity 11 is formed in the first beam 10, penetrating the first end 12 in the first direction. The second beam 20 extends along a second direction, intersecting the first direction. One end of the second beam 20 in the second direction is a second end 22. A second cavity 21 is formed in the second beam 20, penetrating the second end 22 in the second direction. The first end 12 is connected to the second end 22. An installation cavity 13 is defined between the opposite sides of the first beam 10 and the second beam 20. The installation cavity 13 is used to install a battery cell assembly. One end of the first connector 30 extends into the first cavity 11 and is connected to the inner wall of the first cavity 11. The other end extends into the second cavity 21 and is connected to the inner wall of the second cavity 21. The second connector 40 is connected between the outer peripheral surface of the first beam 10 and the outer peripheral surface of the second beam 20.

[0059] For example, a stepped surface is formed on the side of the first beam 10 facing the second beam 20. In the second direction, the first cavity 11 is located on the side of the stepped surface facing the mounting cavity 13. In the first direction, the stepped surface is located on the side of the first cavity 11 facing the first end 12. A clearance channel communicating with the second cavity 21 is formed on the side of the second beam 20 facing the mounting cavity 13. The second end 22 overlaps on the stepped surface and is welded to the stepped surface. The clearance channel is opposite to the opening of the first cavity 11 through the first end 12. The first connector 30 extends into the second cavity 21 through the clearance channel.

[0060] In addition to the individual battery cells, the electrical components and wiring harnesses of the battery device 1000 are also arranged in the mounting cavity 13. The second connector 40 can be connected between the opposite sides of the first beam 10 and the second beam 20, or between the sides of the first beam 10 and the second beam 20 away from the mounting cavity 13, or between the sides of the first beam 10 and the second beam 20 in a third direction, where the first direction, the second direction, and the third direction intersect each other.

[0061] After the battery device 1000 is assembled onto the power consumption device 1, the first connector 30 fixes and supports the first beam 10 and the second beam 20 inside the first beam 10 and the second beam 20, and the second connector 40 fixes and supports the first beam 10 and the second beam 20 outside the first beam 10 and the second beam 20. In this way, the first beam 10 and the second beam 20 are fixed and supported at different positions inside and outside the first beam 10 and the second beam 20. The connection strength of the bracket of the first beam 10 and the second beam 20 is high, and the force distribution between the first beam 10 and the second beam 20 is relatively uniform, which can improve the stability of the battery frame 100.

[0062] When the battery device 1000 is impacted, the first connector 30 inside the first beam 10 and the second beam 20 prevents separation between the first beam 10 and the second beam 20 and prevents deformation at the connection between the first beam 10 and the second beam 20. The second connector 40 outside the first beam 10 and the second beam 20 prevents separation between the first beam 10 and the second beam 20 and prevents deformation at the connection between the first beam 10 and the second beam 20. The first connector 30 and the second connector 40 can disperse the impact load, thereby reducing the stress concentration at the connection between the first beam 10 and the second beam 20. Furthermore, if one of the first connector 30 and the second connector 40 fails, the other can still be fixed and supported between the first beam 10 and the second beam 20. Therefore, the probability of connection failure or excessive deformation at the connection between the first beam 10 and the second beam 20 is low, and the probability of the first beam 10 and the second beam 20 squeezing the battery cell assembly during a collision is also low, thereby reducing the degree of damage to the battery device 1000 when it is impacted.

[0063] According to the battery frame 100 of the first aspect embodiment of this application, by providing a first connector 30 and a second connector 40, the first connector 30 supports and fixes the first beam 10 and the second beam 20 inside the first beam 10 and the second beam 20, and the second connector 40 supports and fixes the first beam 10 and the second beam 20 outside the first beam 10 and the second beam 20, the connection strength at the connection of the first beam 10 and the second beam 20 and the stability of the battery frame 100 can be improved, thereby reducing the degree of damage to the battery device 1000 when it is impacted and improving the impact resistance of the battery device 1000.

[0064] In some embodiments, such as Figure 3 and Figure 5 As shown, the second connector 40 connects the two opposite sides of the first beam 10 and the second beam 20.

[0065] That is, the second connector 40 is disposed in the mounting cavity 13, and the second connector 40 connects the first beam 10 on one side surface located in the mounting cavity 13 and the second beam 20 on one side surface located in the mounting cavity 13.

[0066] Therefore, the outer structure of the battery frame 100 is less, the outer side of the battery frame 100 is relatively flat, the battery frame 100 requires less layout space, and the battery device 1000 needs to consider fewer obstacles during assembly, thereby reducing the difficulty of arranging the battery device 1000 on the power consumption device 1. In addition, the first beam 10 and the second beam 20 can also protect the second connector 40, further reducing the probability of connection failure between the first beam 10 and the second beam 20.

[0067] In some embodiments, such as Figure 4 and Figure 5As shown, the first connector 30 has a first connecting section 31, on which a first fixing hole 311 is formed, and the first connecting section 31 extends into the first cavity 11. The second connector 40 has a second connecting section 41, on which a second fixing hole 411 is formed. A third fixing hole 14 communicating with the first cavity 11 is formed on the side opposite to the first beam 10 and the second beam 20. The battery frame 100 also includes a first fastener 50, which passes through the second fixing hole 411 and the third fixing hole 14 in sequence and is connected to the first fixing hole 311, so that the first connecting section 31 is connected to the inner wall of the first cavity 11 and the side opposite to the first beam 10 and the second beam 20 is connected to the second connecting section 41.

[0068] For example, the first fastener 50 is a bolt, the first fixing hole 311 is a threaded hole, the first fastener 50 passes through the second fixing hole 411 and the third fixing hole 14 in sequence and is tightened in the first fixing hole 311, thereby realizing the connection between the first connecting section 31 and the inner wall of the first cavity 11, and the connection between the opposite side surface of the first beam 10 and the second beam 20 and the second connecting section 41.

[0069] In this way, the first connecting section 31, the side wall of the first cavity 11, and the second connecting section 41 can form a three-layer connection structure. When one of the first connecting section 31, the side wall of the first cavity 11, and the second connecting section 41 is subjected to a load impact, the load can be distributed to the other two structures. As a result, the stress concentration of the connection between the first beam 10 and the second beam 20 can be further reduced, and the damage to the battery device 1000 when it is impacted can be reduced.

[0070] In some embodiments, such as Figure 4 and Figure 5 As shown, the first connector 30 also has a third connecting section 32, on which a fourth fixing hole 321 is formed. The third connecting section 32 extends into the second cavity 21. The second connector 40 has a fourth connecting section 42, on which a fifth fixing hole 421 is formed. A sixth fixing hole 23 communicating with the second cavity 21 is formed on the side of the second beam 20 opposite to the first beam 10. The battery frame 100 also includes a second fastener 51, which passes through the fifth fixing hole 421 and the sixth fixing hole 23 in sequence and is connected to the fourth fixing hole 321, so that the third connecting section 32 is connected to the inner wall of the second cavity 21 and the side of the second beam 20 opposite to the first beam 10 is connected to the fourth connecting section 42.

[0071] For example, the second fastener 51 is a bolt, the fourth fixing hole 321 is a threaded hole, the second fastener 51 passes through the fifth fixing hole 421 and the sixth fixing hole 23 in sequence and is tightened in the fourth fixing hole 321. Thus, the third connecting section 32 is connected to the inner wall of the second cavity 21, the side of the second beam 20 opposite to the first beam 10 is connected to the fourth connecting section 42, the first connecting section 31 and the third connecting section 32 are connected, and multiple reinforcing ribs are connected between the surface of the first connecting section 31 and the surface of the third connecting section 32.

[0072] In this way, the third connecting section 32, the side wall of the second cavity 21, and the fourth connecting section 42 can form a three-layer connection structure. When one of the third connecting section 32, the side wall of the second cavity 21, and the fourth connecting section 42 is subjected to a load impact, the load can be distributed to the other two structures. As a result, the stress concentration at the connection between the first beam 10 and the second beam 20 can be further reduced, and the damage to the battery device 1000 when it is impacted can be reduced.

[0073] In some embodiments, such as Figures 3-5 As shown, the battery frame 100 further includes: an expansion beam 60, which is disposed in the mounting cavity 13 and spaced apart from the second beam 20 in the first direction. One end of the expansion beam 60 in the length direction is a third end 62. A third cavity 61 is formed in the expansion beam 60, which extends through the third end 62 in the length direction of the expansion beam 60. The battery frame 100 also includes: a third connector 70, which includes a first connecting part 71 and a second connecting part 72. The side of the first beam 10 opposite to the second beam 20 is connected to the first connecting part 71, and the second connecting part 72 extends into the third cavity 61 and is connected to the inner wall of the third cavity 61.

[0074] For example, the battery cell assembly is arranged in the mounting cavity 13 and is located on the side of the expansion beam 60 away from the second beam 20 in the first direction. The first connecting part 71 is plate-shaped, and in the first direction, both ends of the first connecting part 71 extend to both sides of the expansion beam 60. Through holes are formed on the first beam 10 and the first connecting part 71, and threaded holes are formed on the first connecting section 31. Bolts are passed through the through holes on the first connecting part 71 and the first beam 10 in sequence and tightened into the threaded holes on the first connecting section 31.

[0075] During the operation of the battery device 1000, a large amount of heat is generated inside the battery device 1000, which causes the components and structures inside the mounting cavity 13 to expand due to heat. As will be understood by those skilled in the art, the expansion beam 60 is made of an elastic material. During the operation of the battery device 1000, the expansion beam 60 deforms with the expansion and contraction of the components and structures inside the mounting cavity 13, so that the shape of the components inside the mounting cavity 13 remains relatively stable.

[0076] It is understandable that by providing a third cavity 61 in the expansion beam 60, and the second connecting part 72 extending into the third cavity 61 and connecting to the inner wall of the third cavity 61, the space occupied by the third connecting part 70 in the mounting cavity 13 can overlap with the space occupied by the expansion beam 60. This increases the space in the mounting cavity 13 for arranging battery cells, thereby improving the energy density of the battery device 1000. Furthermore, the second connecting part 72 extending into the third cavity 61 increases the connection area between the second connecting part 72 and the expansion beam 60, thereby improving the strength and reliability of the connection between the expansion beam 60 and the first beam 10.

[0077] In some embodiments, such as Figures 3-5 As shown, the battery frame 100 also includes a fourth connector 80, which is connected between the first connecting portion 71 and the outer peripheral surface of the expansion beam 60.

[0078] During the operation of the battery device 1000, when the battery device 1000 vibrates, the fourth connector 80 can provide support and fixation between the first connector 71 and the expansion beam 60, that is, between the first beam 10 and the expansion beam 60, thereby improving the stability of the battery device 1000.

[0079] When the battery device 1000 is impacted, part of the impact load on the first beam 10 and the second beam 20 can be transferred to the expansion beam 60 through the fourth connector 80. This can further reduce the stress concentration at the connection between the first beam 10 and the second beam 20, and reduce the damage to the battery device 1000 when it is impacted.

[0080] Furthermore, the fourth connector 80 has a third connecting portion 81, on which a seventh fixing hole 811 is formed, and an eighth fixing hole 711 is formed on the first connecting portion 71. A ninth fixing hole 15 communicating with the first cavity 11 is formed on the side of the first beam 10 opposite to the second beam 20. The battery frame 100 also includes a third fastener 52, which passes through the seventh fixing hole 811, the eighth fixing hole 711 and the ninth fixing hole 15 in sequence and is connected to the first connector 30 so that the first connecting portion 71 is connected to the first beam 10, and the fourth connector 80 is connected to the first connecting portion 71.

[0081] For example, the first connecting part 71 is plate-shaped. In the first direction, both ends of the first connecting part 71 extend to both sides of the expansion beam 60. The fourth connecting member 80 is disposed on the side of the expansion beam 60 facing the second beam 20 in the first direction. That is, the fourth connecting member 80 is connected between the side of the expansion beam 60 facing the second beam 20 and the part of the first connecting part 71 that extends beyond the expansion beam 60 in the direction of the second beam 20. The third fastener 52 is a bolt. The first connecting section 31 of the first connecting member 30 is provided with a threaded hole. The third fastener 52 passes through the seventh fixing hole 811 and the eighth fixing hole 711 in sequence and is tightened in the threaded hole. Thus, the first connecting part 71 is connected to the first beam 10, and the fourth connecting member 80 is connected to the first connecting part 71.

[0082] In this way, the sidewalls of the first connecting section 31, the third connecting part 81, the first connecting part 71, and the first cavity 11 can form a four-layer connection structure. When one of the sidewalls of the first connecting section 31, the third connecting part 81, the first connecting part 71, and the first cavity 11 is subjected to a load impact, the load can be distributed to the other three structures. As a result, the stress concentration on the battery frame 100 can be further reduced, and the damage to the battery device 1000 when it is impacted can be reduced.

[0083] Furthermore, the third connecting part 81 is connected between the first connecting part 71 and the second connecting section 41, and a stepped surface is formed on the second connecting section 41, and the third connecting part 81 overlaps on the stepped surface.

[0084] In some embodiments, such as Figures 3-5 As shown, the fourth connector 80 also has a fourth connecting portion 82, on which a tenth fixing hole 821 is formed. The expansion beam 60 has an eleventh fixing hole 63 communicating with the third cavity 61 on one side in the first direction. The second connecting portion 72 has a twelfth fixing hole 721. The battery frame 100 also includes a fourth fastener 53, which passes through the tenth fixing hole 821 and the eleventh fixing hole 63 in sequence and connects to the twelfth fixing hole 721 so that the fourth connecting portion 82 is connected to the expansion beam 60 and the second connecting portion 72 is connected to the inner wall of the third cavity 61.

[0085] For example, the fourth fastener 53 is a bolt, and the twelfth fixing hole 721 is a threaded hole. The fourth fastener 53 passes through the tenth fixing hole 821 and the eleventh fixing hole 63 in sequence and is tightened in the twelfth fixing hole 721. Thus, the fourth connecting part 82 is connected to the outer peripheral surface of the expansion beam 60, and the second connecting part 72 is connected to the inner wall of the third cavity 61.

[0086] In this way, the sidewalls of the fourth connecting part 82, the third cavity 61, and the second connecting part 72 can form a three-layer connection structure. When one of the fourth connecting part 82, the sidewalls of the third cavity 61, and the second connecting part 72 is subjected to a load impact, the load can be distributed to the other two structures. As a result, the stress concentration on the battery frame 100 can be further reduced, and the damage to the battery device 1000 when it is impacted can be reduced.

[0087] According to the battery device 1000 of the second aspect embodiment of this application, such as Figure 2 As shown, it includes: the battery frame 100 according to the first aspect embodiment of this application.

[0088] According to the second aspect embodiment of the present application, the battery device 1000 can reduce the degree of damage when subjected to impact by providing the battery frame 1000 described above according to the first aspect embodiment of the present application.

[0089] According to the third aspect embodiment of this application, the electrical device 1, such as Figure 1 As shown, it includes: the battery device 1000 according to the second aspect embodiment of this application.

[0090] According to the third aspect of the present application, the impact resistance of the power device 1 can be improved by providing the battery device 1000 according to the second aspect of the present application.

[0091] In some embodiments, the electrical device 1 is a vehicle, and the first beam 10 is formed as the door sill beam of the vehicle.

[0092] Understandably, since the dimensions of a vehicle in the left-right direction are fixed, using the sill beam as the first beam 10 of the battery unit 1000 allows for more space inside the sill beam to accommodate individual battery cells. This increases the energy density of the battery unit 1000, thereby improving the vehicle's range. Furthermore, using the sill beam as the first beam 10 of the battery unit 1000 increases the integration of components on the vehicle, reduces material usage, and lowers the vehicle's production costs.

[0093] The following is for reference. Figures 3-5 A specific embodiment of the battery frame 100 according to the present invention is described.

[0094] The battery frame 100 includes: a first beam 10, a second beam 20, an expansion beam 60, a first connector 30, a second connector 40, a third connector 70, a fourth connector 80, a first fastener 50, a second fastener 51, a third fastener 52, and a fourth fastener 53.

[0095] The first beam 10 extends along a first direction, and one end of the first beam 10 in the first direction is a first end 12. A first cavity 11 is formed in the first beam 10, penetrating the first end 12 in the first direction. A third fixing hole 14 and a ninth fixing hole 15 communicating with the first cavity 11 are formed on the side of the first beam 10 opposite to the second beam 20.

[0096] The second beam 20 extends along a second direction, which intersects with the first direction. One end of the second beam 20 in the second direction is the second end 22. A second cavity 21 is formed inside the second beam 20, which passes through the second end 22 in the second direction. The first end 12 is connected to the second end 22. An installation cavity 13 is defined between the opposite sides of the first beam 10 and the second beam 20. A sixth fixing hole 23 is formed on the side of the second beam 20 opposite to the first beam 10, which communicates with the second cavity 21.

[0097] The first connector 30 has a first connecting segment 31 and a third connecting segment 32. A first fixing hole 311 is formed on the first connecting segment 31, which extends into the first cavity 11. A fourth fixing hole 321 is formed on the third connecting segment 32, which extends into the second cavity 21. The second connector 40 has a second connecting segment 41 and a fourth connecting segment 42. A second fixing hole 411 is formed on the second connecting segment 41, and a fifth fixing hole 421 is formed on the fourth connecting segment 42.

[0098] The first fastener 50 passes through the second fixing hole 411 and the third fixing hole 14 in sequence and connects to the first fixing hole 311, so that the first connecting section 31 is connected to the inner wall of the first cavity 11, and the side of the first beam 10 opposite to the second beam 20 is connected to the second connecting section 41. The second fastener 51 passes through the fifth fixing hole 421 and the sixth fixing hole 23 in sequence and connects to the fourth fixing hole 321, so that the third connecting section 32 is connected to the inner wall of the second cavity 21, and the side of the second beam 20 opposite to the first beam 10 is connected to the fourth connecting section 42.

[0099] An expansion beam 60 is disposed in the mounting cavity 13 and is spaced apart from the second beam 20 in the first direction. One end of the expansion beam 60 in the length direction is a third end 62. A third cavity 61 is formed in the expansion beam 60, which penetrates the third end 62 in the length direction of the expansion beam 60. An eleventh fixing hole 63 communicating with the third cavity 61 is formed on the side of the expansion beam 60 facing the second beam 20 in the first direction. The battery cell assembly is disposed in the mounting cavity 13 and is located on the side of the expansion beam 60 away from the second beam 20.

[0100] The battery frame 100 also includes a third connector 70, which includes a first connector 71 and a second connector 72. The side of the first beam 10 opposite to the second beam 20 is connected to the first connector 71. The second connector 72 extends into the third cavity 61 and is connected to the inner wall of the third cavity 61. An eighth fixing hole 711 is formed on the first connector 71, which is located on the side of the expansion beam 60 facing the second beam 20. A twelfth fixing hole 721 is formed on the second connector 72.

[0101] The fourth connector 80 has a third connecting portion 81 and a fourth connecting portion 82. A seventh fixing hole 811 is formed on the third connecting portion 81, and a tenth fixing hole 821 is formed on the fourth connecting portion 82. A third fastener 52 passes sequentially through the seventh fixing hole 811 and the eighth fixing hole 711 to connect with the ninth fixing hole 15, thereby connecting the first connecting portion 71 to the first beam 10, and the fourth connector 80 to the first connecting portion 71. A fourth fastener 53 passes sequentially through the tenth fixing hole 821 and the eleventh fixing hole 63 to connect with the twelfth fixing hole 721, thereby connecting the fourth connecting portion 82 to the expansion beam 60, and the second connecting portion 72 to the inner wall of the third cavity 61.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery frame (100), characterized in that, include: A first beam (10) extends along a first direction, and one end of the first beam (10) in the first direction is a first end (12). A first cavity (11) is formed in the first beam (10) that extends through the first end (12) in the first direction. The second beam (20) extends along a second direction, which intersects with the first direction. One end of the second beam (20) in the second direction is a second end (22). A second cavity (21) is formed in the second beam (20) that extends through the second end (22) in the second direction. The first end (12) is connected to the second end (22). An installation cavity (13) is defined between the opposite sides of the first beam (10) and the second beam (20). The installation cavity (13) is used to install a battery cell assembly. The first connector (30) has one end extending into the first cavity (11) and connected to the inner wall of the first cavity (11), and the other end extending into the second cavity (21) and connected to the inner wall of the second cavity (21). The second connector (40) is connected between the outer peripheral surface of the first beam (10) and the outer peripheral surface of the second beam (20).

2. The battery frame (100) according to claim 1, characterized in that, The second connector (40) is connected between the opposite sides of the first beam (10) and the second beam (20).

3. The battery frame (100) according to claim 2, characterized in that, The first connector (30) has a first connecting section (31) with a first fixing hole (311) formed thereon, and the first connecting section (31) extends into the first cavity (11). The second connector (40) has a second connecting section (41) with a second fixing hole (411) formed thereon. A third fixing hole (14) communicating with the first cavity (11) is formed on the side of the first beam (10) opposite to the second beam (20). The battery frame (100) further includes: a first fastener (50), which passes through the second fixing hole (411) and the third fixing hole (14) in sequence and is connected to the first fixing hole (311) so that the first connecting segment (31) is connected to the inner wall of the first cavity (11) and the side of the first beam (10) opposite to the second beam (20) is connected to the second connecting segment (41).

4. The battery frame (100) according to claim 2, characterized in that, The first connector (30) also has a third connecting segment (32) with a fourth fixing hole (321) formed thereon. The third connecting segment (32) extends into the second cavity (21). The second connector (40) has a fourth connecting segment (42) with a fifth fixing hole (421) formed thereon. The second beam (20) has a sixth fixing hole (23) communicating with the second cavity (21) on the side opposite to the first beam (10). The battery frame (100) further includes a second fastener (51), which passes through the fifth fixing hole (421) and the sixth fixing hole (23) in sequence and is connected to the fourth fixing hole (321) so that the third connecting section (32) is connected to the inner wall of the second cavity (21) and the side of the second beam (20) opposite to the first beam (10) is connected to the fourth connecting section (42).

5. The battery frame (100) according to any one of claims 1-4, characterized in that, Also includes: An expansion beam (60) is disposed in the mounting cavity (13) and spaced apart from the second beam (20) in the first direction. One end of the expansion beam (60) in the length direction is a third end (62). A third cavity (61) is formed in the expansion beam (60) that penetrates the third end (62) in the length direction of the expansion beam (60). The battery frame (100) further includes a third connector (70), which includes a first connector (71) and a second connector (72). The side of the first beam (10) opposite to the second beam (20) is connected to the first connector (71), and the second connector (72) extends into the third cavity (61) and is connected to the inner wall of the third cavity (61).

6. The battery frame (100) according to claim 5, characterized in that, Also includes: A fourth connector (80) is connected between the first connecting portion (71) and the outer peripheral surface of the expansion beam (60). The fourth connector (80) has a third connecting portion (81) with a seventh fixing hole (811) formed thereon. An eighth fixing hole (711) is formed thereon on the first connecting portion (71). A ninth fixing hole (15) communicating with the first cavity (11) is formed on the side of the first beam (10) opposite to the second beam (20). The battery frame (100) further includes: a third fastener (52), which passes through the seventh fixing hole (811), the eighth fixing hole (711) and the ninth fixing hole (15) in sequence and is connected to the first connector (30) so that the first connecting part (71) is connected to the first beam (10), and the fourth connector (80) is connected to the first connecting part (71).

7. The battery frame (100) according to claim 6, characterized in that, The fourth connector (80) also has a fourth connecting portion (82), on which a tenth fixing hole (821) is formed. The expansion beam (60) has an eleventh fixing hole (63) communicating with the third cavity (61) on one side in the first direction. The second connecting portion (72) has a twelfth fixing hole (721). The battery frame (100) further includes a fourth fastener (53), which passes through the tenth fixing hole (821) and the eleventh fixing hole (63) in sequence and is connected to the twelfth fixing hole (721) so that the fourth connecting part (82) is connected to the expansion beam (60) and the second connecting part (72) is connected to the inner wall of the third cavity (61).

8. A battery device (1000), characterized in that, include: The battery frame (100) according to any one of claims 1-7.

9. An electrical device (1), characterized in that, include: The battery device (1000) according to claim 8.

10. The electrical appliance (1) according to claim 9, characterized in that, The electrical device (1) is a vehicle, and the first beam (10) is formed as the door sill beam of the vehicle.

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