Frame, battery tray, battery pack and electric device

Abstract

The utility model relates to the technical field of batteries, and provides a frame, a battery tray, a battery pack and an electric device. The frame comprises a frame body and a reinforcing structure. Wherein the frame is provided with an accommodating cavity; the reinforcing structure comprises a first reinforcing part and a second reinforcing part, and the first reinforcing part and the second reinforcing part are located in the containing cavity. The first reinforcing part extends along a first direction; the second reinforcing part is arranged at at least one end of the first reinforcing part in the first direction; the second reinforcing part extends towards the inner wall of the frame body, and the extending direction of the second reinforcing part intersects with the extending direction of the first reinforcing part. The first direction intersects with the length direction of the frame body. Through the arrangement, the strength and the extrusion resistance of the frame are improved, so that when the frame is applied to the battery tray, the deformation of the battery tray is reduced, and the safety of a battery pack is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a frame, a battery tray, a battery pack and a power utilization device. BACKGROUND

[0002] With the continuous development of battery technology, the energy density of batteries is getting higher and higher, and batteries are gradually applied in the power field.

[0003] In the related art, a battery pack includes battery cells and a battery tray, and the battery cells are located in the battery tray to be packaged by the battery tray and protected. The use environment of the battery pack is different, and the battery tray may be deformed due to external force, and even cause the battery cells to be out of control, thereby reducing the safety of the battery pack. UTILITY MODEL CONTENT

[0004] The present application provides a frame, a battery tray, a battery pack and a power utilization device, which can improve the safety of the battery pack.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] In a first aspect, the present application provides a frame applied to a battery tray, the frame comprising:

[0007] a frame body, the frame body having a receiving cavity;

[0008] a reinforcing structure, the reinforcing structure comprising a first reinforcing part and a second reinforcing part, the first reinforcing part and the second reinforcing part being located in the receiving cavity; the first reinforcing part extends along a first direction; along the first direction, the second reinforcing part is arranged at at least one end of the first reinforcing part; the second reinforcing part extends towards an inner wall of the frame body, and the extension direction of the second reinforcing part intersects with the extension direction of the first reinforcing part;

[0009] The first direction intersects with the length direction of the frame body.

[0010] In some embodiments, the second reinforcing part is arranged obliquely relative to the first reinforcing part.

[0011] In some embodiments, along the first direction, the second reinforcing part extends towards an inner wall of the frame body opposite to the first reinforcing part.

[0012] In some embodiments, the number of the second reinforcing parts is at least two, and the at least two second reinforcing parts are connected to the same end of the first reinforcing part; the extension directions of the at least two second reinforcing parts intersect.

[0013] In some embodiments, along the second direction, the at least two second reinforcing portions are located on opposite sides of the first reinforcing portion.

[0014] The first direction, the second direction and the length direction of the frame body are perpendicular to each other.

[0015] In some embodiments, along the second direction, the at least two second reinforcing portions are symmetrically arranged relative to the first reinforcing portion.

[0016] In some embodiments, along the first direction, both ends of the first reinforcing portion are provided with the second reinforcing portions.

[0017] In some embodiments, along the first direction, the second reinforcing portions at both ends of the first reinforcing portion are symmetrically arranged relative to the first reinforcing portion.

[0018] In some embodiments, the first reinforcing portion and the second reinforcing portion divide the accommodating cavity into multiple chambers, the sum of the cross-sectional areas of the multiple chambers located at both ends of the first reinforcing portion along the first direction is less than the sum of the cross-sectional areas of the multiple chambers located at both ends of the first reinforcing portion along the second direction, and the first direction, the second direction and the length direction of the frame body are perpendicular to each other.

[0019] In some embodiments, the multiple chambers include a first chamber, a second chamber, a third chamber and a fourth chamber, the first chamber and the third chamber are arranged along the second direction, and the second chamber and the fourth chamber are arranged along the first direction.

[0020] The sum of the cross-sectional area of the first chamber and the cross-sectional area of the third chamber is S1, the sum of the cross-sectional area of the second chamber and the cross-sectional area of the fourth chamber is S2, and the S1 and the S2 satisfy: 1 / 3≤(S2 / S1)≤3 / 5.

[0021] In some embodiments, the extension directions of the at least two second reinforcing portions have an included angle, the included angle is α, and the α satisfies: 66°≤α≤90°.

[0022] In some embodiments, along the first direction, the ratio of the extension length of the first reinforcing portion to the extension length of the frame body is Q, and the Q satisfies: 0.25≤Q≤0.5.

[0023] In some embodiments, the thickness of the first reinforcing portion is t1, and the t1 satisfies: 0.8mm≤t1≤1.5mm.

[0024] And / or, the thickness of the second reinforcing portion is t2, and the t2 satisfies: 0.8mm≤t2≤1.5mm.

[0025] In some embodiments, the extension length of the frame body along the first direction is L1, and the L1 satisfies 50mm≤L1≤60mm.

[0026] In some embodiments, the extension length of the frame body along the second direction is L2, and the L2 satisfies 25mm≤L2≤30mm, and the first direction, the second direction and the length direction of the frame body are perpendicular to each other.

[0027] In some embodiments, the thickness of the frame wall of the frame body is t3, and the t3 satisfies 0.8mm≤t3≤1.5mm.

[0028] In some embodiments, the frame further comprises an extension section, which is arranged at one side of the frame body outside along the first direction, and the extension section extends along the first direction.

[0029] In some embodiments, the extension section and the frame wall of one side of the frame body are flush along the second direction, and the first direction, the second direction and the length direction of the frame body are perpendicular to each other.

[0030] In some embodiments, the reinforcing structure further comprises a third reinforcing part, which is arranged at the extension section and connected with the frame wall of the frame body extending along the second direction, and the first direction, the second direction and the length direction of the frame body are perpendicular to each other.

[0031] In some embodiments, the extension direction of the third reinforcing part and the extension direction of the extension section have an included angle, and the included angle is an acute angle.

[0032] In some embodiments, the frame body is provided with a connecting hole, which penetrates the frame body along the second direction, and the first direction, the second direction and the length direction of the frame body are perpendicular to each other.

[0033] In some embodiments, the frame further comprises a lifting lug, which is arranged one by one with the connecting hole, and the lifting lug and the frame body are welded through the connecting hole.

[0034] In some embodiments, the frame body is provided with a first electrophoresis hole, which communicates with the accommodating cavity.

[0035] In some embodiments, the extension section is provided with a second electrophoresis hole, which penetrates the extension section along the second direction, and the first direction, the second direction and the length direction of the frame body are perpendicular to each other.

[0036] In a second aspect, the application provides a battery tray, comprising the frame provided in the first aspect.

[0037] In some embodiments, the battery tray further comprises a tray body, the number of the frames is at least two, and the at least two frames are respectively arranged on opposite sides of the tray body along a third direction.

[0038] In some embodiments, along the height direction of the tray body, the two sides of the frame and the tray body are welded.

[0039] In a third aspect, the application provides a battery pack, comprising:

[0040] the battery tray provided in the second aspect;

[0041] a sealing cover, the sealing cover is arranged on the battery tray to form an accommodation cavity;

[0042] a battery cell, the battery cell is arranged in the accommodation cavity.

[0043] In a fourth aspect, the application provides a power consumption device, comprising the frame provided in the first aspect or the battery pack provided in the third aspect.

[0044] The application provides a frame, a battery tray, a battery pack and a power consumption device. The frame comprises a frame body and a reinforcing structure. The frame has a receiving cavity. The reinforcing structure comprises a first reinforcing part and a second reinforcing part, and the first reinforcing part and the second reinforcing part are located in the receiving cavity. The first reinforcing part extends along a first direction. The second reinforcing part is arranged at at least one end of the first reinforcing part along the first direction. The second reinforcing part extends towards an inner wall of the frame body, and the extending direction of the second reinforcing part intersects with the extending direction of the first reinforcing part. The first direction intersects with the length direction of the frame body. Through such arrangement, the strength and the extrusion resistance of the frame are improved, so that the deformation of the battery tray is reduced when the frame is applied to the battery tray, and the safety of the battery pack is improved. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0046] Figure 1 The schematic view of the frame provided in the embodiments of the application;

[0047] Figure 2 Front view of the bezel provided for the embodiment of the present application Figure 1 ;

[0048] Figure 3 Front view of the bezel provided for the embodiment of the present application Figure 2 ;

[0049] Figure 4 Schematic view of the battery tray provided for the embodiment of the present application

[0050] Figure 5 Schematic view of the battery pack provided for the embodiment of the present application

[0051] Figure 6 Front view of the battery pack provided for the embodiment of the present application

[0052] Explanation of reference signs:

[0053] 100 - bezel

[0054] 110 - bezel body; 111 - accommodating cavity; 1111 - first chamber; 1112 - second chamber; 1113 - third chamber; 1114 - fourth chamber; 112 - connecting hole

[0055] 120 - reinforcing structure; 121 - first reinforcing part; 122 - second reinforcing part; 1221 - first second reinforcing part; 1222 - second second reinforcing part; 1223 - third second reinforcing part; 1224 - fourth second reinforcing part; 123 - third reinforcing part

[0056] 130 - extension section

[0057] 140 - lifting lug

[0058] 200 - battery tray; 210 - tray body

[0059] 300 - battery pack; 310 - sealing cover; 320 - accommodating cavity DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application. The embodiments described below and the features in the embodiments can be combined with each other without conflict, if possible.

[0061] With the continuous development of battery technology, the energy density of the battery is higher and higher, and the battery is gradually applied in the power field.

[0062] In the related art, the battery pack includes battery cells and a battery tray, and the battery cells are located in the battery tray to be packaged by the battery tray and protected. The use environment of the battery pack is different, and the battery tray may be deformed due to external force, and even cause the battery cells to be out of control, thereby reducing the safety of the battery pack.

[0063] Therefore, the embodiments of the present application provide a frame 100 applied to a battery tray 200 to improve the structural strength of the battery tray 200 and the extrusion resistance of the battery tray 200, thereby reducing the deformation of the battery tray 200 and enhancing the safety of the battery pack 300.

[0064] First of all, it needs to be pointed out that the first direction in the embodiments of the present application intersects the length direction of the frame body 110, and the first direction can be the width direction of the frame body 110 or the height direction of the frame body 110.

[0065] Further, the second direction, the first direction and the length direction of the frame body 110 are perpendicular to each other. When the first direction is along the width direction of the frame body 110, the second direction is along the height direction of the frame body 110; when the first direction is along the height direction of the frame body 110, the second direction is along the width direction of the frame body 110.

[0066] The embodiments of the present application take the first direction along the width direction of the frame body 110 and the second direction along the height direction of the frame body 110 as an example for description.

[0067] Therefore, referring to Figures 1-3 , the length direction of the frame body 110 is defined as the M direction, the first direction is defined as the R direction, and the second direction is defined as the P direction.

[0068] Therefore, in a first aspect, referring to Figure 1 and Figure 2 , the embodiments of the present application provide a frame 100, which includes a frame body 110 and a reinforcing structure 120. The frame 100 has a receiving cavity 111. The reinforcing structure 120 includes a first reinforcing part 121 and a second reinforcing part 122, and the first reinforcing part 121 and the second reinforcing part 122 are located in the receiving cavity 111. The first reinforcing part 121 extends along the first direction (R); along the first direction (R), the second reinforcing part 122 is arranged at least one end of the first reinforcing part 121; the second reinforcing part 122 extends towards the inner wall of the frame body 110, and the extension direction of the second reinforcing part 122 intersects the extension direction of the first reinforcing part 121; the first direction (R) intersects the length direction (M) of the frame body 110.

[0069] It can be understood that the first reinforcing portion 121 and the second reinforcing portion 122 are arranged inside the frame body 110 in the embodiments of the present application, which prevents the reinforcing structure 120 from being designed as a structural redundancy formed on the battery tray 200, reduces the space ratio of the battery pack 300, and also reduces the production cost of the battery pack 300 and improves the assembly efficiency of the battery pack 300. The extension directions of the first reinforcing portion 121 and the second reinforcing portion 122 intersect, and such a reinforcing structure 120 with intersecting extension directions can effectively disperse and resist the force applied externally to the frame body 110. The first reinforcing portion 121 and the second reinforcing portion 122 form a supporting effect and a structural reinforcing effect on the frame body 110, improve the strength of the frame body 110 and the extrusion resistance of the frame body 110, and reduce the deformation of the battery tray 200 when the frame 100 is applied to the battery tray 200, thereby improving the safety of the battery pack 300. Furthermore, the space ratio of the reinforcing structure 120 can also be reduced, so as to reduce the space ratio of the battery pack 300 when the frame 100 is applied to the battery tray 200, which helps to improve the energy density of the battery pack 300. In addition, by arranging the first reinforcing portion 121 and the second reinforcing portion 122, the strength and extrusion resistance of the frame 100 can be improved without significantly increasing the amount of material used, which helps to reduce the weight of the frame 100.

[0070] It can be understood that the second reinforcing portion 122 in the embodiments of the present application can be arranged on one side of the first reinforcing portion 121 along the first direction (R), or on both sides, and the embodiments of the present application do not make specific requirements thereon. In addition, the extension direction of the second reinforcing portion 122 can intersect the extension direction of the first reinforcing portion 121, that is, the extension direction of the second reinforcing portion 122 can be perpendicular to the extension direction of the first reinforcing portion 121, or the extension direction of the second reinforcing portion 122 and the extension direction of the first reinforcing portion 121 can have other included angle angles, and the embodiments of the present application do not make specific requirements thereon.

[0071] In some embodiments, the second reinforcing portion 122 is arranged obliquely relative to the first reinforcing portion 121.

[0072] Furthermore, the second reinforcing portion 122 is arranged obliquely relative to the first reinforcing portion 121, and such an obliquely arranged second reinforcing portion 122 can better resist bending and torsional forces, thereby improving the strength and stability of the frame 100. In addition, on the basis of meeting the strength of the frame 100 and the extrusion resistance and bending resistance performance requirements of the frame 100, the thickness of the frame body 110 can be reduced by such a first reinforcing portion 121 and a second reinforcing portion 122, thereby reducing the weight of the frame 100 and reducing the material cost of the frame 100. After the frame 100 is applied to the battery tray 200, the weight of the battery pack 300 is further reduced, which helps to design the battery pack 300 to be lightweight.

[0073] In combination with the foregoing embodiments, the extending direction of the second reinforcing portion 122 and the first reinforcing portion 121 intersect. The second reinforcing portion 122 is arranged obliquely relative to the first reinforcing portion 121. The extending direction of the second reinforcing portion 122 is various. In some embodiments, along the first direction (R), the second reinforcing portion 122 extends toward the inner wall of the frame body 110 opposite the first reinforcing portion 121.

[0074] It is not difficult to understand that the second reinforcing portion 122 extends to the inner wall of the frame body 110, which can effectively disperse and bear the extrusion force along the first direction received by the frame 100 through the first reinforcing portion 121 and the second reinforcing portion 122, thereby improving the extrusion resistance of the frame 100, preventing the deformation of the frame 100, so that when the frame 100 is applied to the battery pack 300, the deformation of the battery cell caused by the deformation of the frame 100 and the thermal runaway of the battery cell are avoided, thereby enhancing the structural stability and safety of the battery pack 300.

[0075] Of course, in the embodiments of the present application, the frame 100 will also bear various forces from different directions during use. By arranging the second reinforcing portion 122 obliquely relative to the first reinforcing portion 121, the bending resistance and torsion resistance of the frame 100 are increased, the deformation of the frame 100 under external force is reduced, and the durability and reliability of the frame 100 are improved.

[0076] As an optional embodiment, the number of second reinforcing portions 122 is at least two, and the at least two second reinforcing portions 122 are connected to the same end of the first reinforcing portion 121; the extending directions of the at least two second reinforcing portions 122 intersect.

[0077] Referring to Figure 2 When the number of second reinforcing portions is two, the first second reinforcing portion 1221 and the second second reinforcing portion 1222 are connected to the left end or the right end of the first reinforcing portion 121 along the first direction (R), and the first second reinforcing portion 1221 and the second second reinforcing portion 1222 can be arranged intersecting.

[0078] Alternatively, the third second reinforcing portion 1223 and the fourth second reinforcing portion 1224 are connected to the left end or the right end of the first reinforcing portion 121 along the first direction (R). The third second reinforcing portion 1223 and the fourth second reinforcing portion 1224 can be arranged intersecting.

[0079] When the number of the second reinforcing portions 122 is multiple, the second reinforcing portion one 1221 and the second reinforcing portion two 1222 are connected to the left end or the right end of the first reinforcing portion 121 along the first direction (R), and the second reinforcing portion three 1223 and the second reinforcing portion four 1224 are connected to the right end or the left end of the first reinforcing portion 121 along the first direction (R). Among them, the extension direction of the second reinforcing portion one 1221 and the extension direction of the second reinforcing portion two 1222 intersect, and the extension direction of the second reinforcing portion three 1223 and the extension direction of the second reinforcing portion four 1224 intersect.

[0080] In this way, by arranging multiple second reinforcing portions 122, the strength of the frame 100 is enhanced, so that the extrusion resistance of the frame 100 is enhanced, and at the same time, the bending resistance and the torsion resistance of the frame 100 can also be improved. When the frame 100 is applied to the battery tray 200, the deformation of the battery tray 200 can be reduced to avoid the battery tray 200 from deforming to cause the thermal runaway of the battery cell, thereby improving the safety of the battery pack 300.

[0081] In some embodiments, along the second direction (P), at least two second reinforcing portions 122 are located on opposite sides of the first reinforcing portion 121.

[0082] It can be understood that the second reinforcing portion one 1221 and the second reinforcing portion two 1222 are located on opposite sides of the first reinforcing portion 121 along the second direction (P), and the second reinforcing portion three 1223 and the second reinforcing portion four 1224 are located on opposite sides of the first reinforcing portion 121 along the second direction (P). In this way, the frame 100 can resist and disperse the extrusion force borne by the frame 100 through at least two second reinforcing portions 122, further prevent the deformation of the frame 100, and make the structural stability and safety of the battery pack 300.

[0083] Of course, through such a reinforcing structure 120, the frame 100 can also effectively resist bending and torsional moments from different directions, thereby improving the bending resistance and torsion resistance of the frame 100, and reducing the probability of structural fatigue and damage of the frame 100.

[0084] Referring to Figure 2 In some embodiments, along the first direction (R), both ends of the first reinforcing portion 121 are provided with the second reinforcing portion 122.

[0085] In the embodiments of the present application, by arranging the second reinforcing portion 122 at both ends of the first reinforcing portion 121 along the first direction (R), the stress and load from different directions can be effectively dispersed and borne, so as to improve the strength and extrusion resistance of the frame 100, and when the frame 100 is applied to the battery tray 200, the deformation of the battery tray 200 can be prevented, thereby improving the safety of the battery pack 300.

[0086] Referring to Figure 2 In some embodiments, the second reinforcing portions 122 at the two ends of the first reinforcing portion 121 are symmetrically arranged relative to the first reinforcing portion 121 along the first direction (R). The embodiments of the present application symmetrically arrange the second reinforcing portions 122 relative to the first reinforcing portion 121 along the first direction (R) to achieve force balance and stability of the frame body 110 through such a symmetrical arrangement. Further, the symmetrical second reinforcing portions 122 can uniformly disperse the extrusion load, bending load, and torsional load of the frame 100, thereby improving the extrusion resistance, bending resistance, and torsional resistance of the frame 100 and reducing deformation of the frame 100. It can be understood that the frame 100 is applied to the battery tray 200, which can reduce deformation of the battery tray 200, thereby reducing the probability of thermal runaway of the battery cell caused by deformation of the battery tray 200 and improving the safety of the battery pack 300.

[0087] Referring to Figure 2 In some embodiments, the second reinforcing portion one 1221 and the second reinforcing portion two 1222 are symmetrically arranged relative to the first reinforcing portion 121 along the second direction (P). The second reinforcing portion three 1223 and the second reinforcing portion four 1224 are symmetrically arranged relative to the first reinforcing portion 121 along the second direction (P). In this way, the embodiments of the present application symmetrically arrange the second reinforcing portions 122 relative to the first reinforcing portion 121 along the second direction (P) to better balance the load of the frame body 110 in the second direction (P) and the first direction (R), and at the same time, through the mutual support between the first reinforcing portion 121 and the second reinforcing portion 122, to reduce the deformation of the frame body 110, thereby reducing the probability of thermal runaway of the battery cell and improving the safety of the battery pack 300.

[0088] In addition, the symmetrically arranged second reinforcing portions 122 facilitate the production and manufacturing of the reinforcing structure 120 and the frame 100, thereby reducing the complexity of the production process of the frame 100 and the production cost of the frame 100.

[0089] In some embodiments, the reinforcing structure 120 and the frame body 110 can be an integral piece, so that the corresponding frame 100 can be obtained through one-time processing, thereby improving the production efficiency of the frame 100.

[0090] It can be understood that the first reinforcing portion 121 and the second reinforcing portion 122 are arranged in the accommodation cavity 111 of the frame body 110, and the first reinforcing portion 121 and the second reinforcing portion 122 divide the accommodation cavity 111 into multiple chambers. The sum of the cross-sectional areas of the multiple chambers at the two ends of the first reinforcing portion 121 along the first direction (R) is less than the sum of the cross-sectional areas of the multiple chambers at the two ends of the first reinforcing portion 121 along the second direction.

[0091] Exemplarily, the plurality of chambers include a first chamber 1111, a second chamber 1112, a third chamber 1113, and a fourth chamber 1114, the first chamber 1111 and the third chamber 1113 are arranged along the second direction (P), and the second chamber 1112 and the fourth chamber 1114 are arranged around the first direction (R); a sum of a cross-sectional area of the first chamber 1111 and a cross-sectional area of the third chamber 1113 is S1, and a sum of a cross-sectional area of the second chamber 1112 and a cross-sectional area of the fourth chamber 1114 is S2, where S2 is less than S1.

[0092] Therefore, because S1 is greater than S2, the frame 100 can bear greater load and stress in the second direction (P), and the deformation of the frame 100 in the second direction (P) is reduced. It can be understood that, when the frame 100 is subjected to extrusion in the first direction (R), the extrusion load of the frame 100 is dispersed by the reinforcing structure 120, the local stress concentration is reduced, and the extrusion resistance of the frame body is improved.

[0093] In some embodiments, S1 and S2 satisfy: 1 / 3≤(S2 / S1)≤3 / 5.

[0094] Exemplarily, S2 / S1 can be equal to 1 / 3, 2 / 5, 7 / 15, 8 / 15, 3 / 5, and the like, and the application embodiments do not make specific requirements thereon, and values meeting the above range can be used. The application embodiments adjust the load distribution of the frame body 110 by limiting the area ratio of the chambers, avoid the load of the frame body 110 from being concentrated, so that the frame 100 can better resist deformation through the first reinforcing portion 121 and the second reinforcing portion 122, the structure of the frame 100 is more stable, further making the structure of the battery pack 300 stable, reducing the probability of thermal runaway of the battery cells caused by deformation of the battery pack 300, and improving the safety of the battery pack 300.

[0095] In some embodiments, along the first direction (R), a ratio of an extension length of the first reinforcing portion 121 to an extension length of the frame body 110 is Q, and Q satisfies: 0.25≤Q≤0.5.

[0096] Exemplarily, Q can be 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, and the like, and a ratio meeting the above numerical range can be used, and the application embodiments do not make specific requirements thereon.

[0097] It should be noted that, referring to Figure 3 , the starting point of the extension length of the first reinforcing portion 121 in the first direction (R) is the intersection point of the left second reinforcing portion 122 and the first reinforcing portion 121, and the ending point of the extension length of the first reinforcing portion 121 in the first direction (R) is the intersection point of the right second reinforcing portion 122 and the first reinforcing portion 121.

[0098] Or, when the second reinforcing portion 122 is only arranged at one end of the first reinforcing portion 121, the starting point of the first reinforcing portion 121 in the length calculation along the first direction (R) is the intersection point of the second reinforcing portion 122 and the first reinforcing portion 121, and the ending point of the first reinforcing portion 121 in the length calculation along the first direction (R) is the end of the first reinforcing portion 121 away from the second reinforcing portion 122.

[0099] In combination Figure 2 And Figure 3 In some embodiments, the second reinforcing portion 122 has an extension direction, and the extension direction of the second reinforcing portion 122 and the extension direction of the second reinforcing portion 122 form an included angle α; α satisfies: 66°≤α≤90°.

[0100] For example, the included angle α between the extension direction of the second reinforcing portion one 1221 and the extension direction of the second reinforcing portion two 1222 can be equal to 66°, 68°, 70°, 72°, 74°, 76°, 78°, 80°, 82°, 84°, 86°, 88°, 90°, etc., and the angle values satisfying the above numerical range can be used, and the embodiments of the present application do not make specific requirements thereon.

[0101] The included angle α between the extension direction of the second reinforcing portion three 1223 and the extension direction of the second reinforcing portion four 1224 can be equal to 66°, 68°, 70°, 72°, 74°, 76°, 78°, 80°, 82°, 84°, 86°, 88°, 90°, etc., and the angle values satisfying the above numerical range can be used, and the embodiments of the present application do not make specific requirements thereon.

[0102] Furthermore, the included angle between the extension direction of the second reinforcing portion one 1221 and the extension direction of the second reinforcing portion two 1222 can be the same as or different from the included angle between the extension direction of the second reinforcing portion three 1223 and the extension direction of the second reinforcing portion four 1224, and the embodiments of the present application do not make specific requirements on the angle combination of the two.

[0103] In some embodiments, the thickness of the first reinforcing portion 121 is t1, and t1 satisfies: 0.8mm≤t1≤1.5mm.

[0104] For example, the thickness t1 of the first reinforcing portion 121 can be equal to 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, etc., and the thickness values satisfying the above numerical range can be used, and the embodiments of the present application do not make specific requirements thereon.

[0105] In some embodiments, the thickness of the second reinforcing portion 122 is t2, and t2 satisfies: 0.8mm≤t2≤1.5mm.

[0106] Exemplarily, the thickness t2 of the second reinforcing portion 122 can be equal to 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc., and thickness values meeting the above numerical range are all acceptable, and the embodiment of the present application does not make specific requirements thereon.

[0107] It should be noted that in the embodiment of the present application, the thickness t1 of the first reinforcing portion 121 and the thickness t2 of the second reinforcing portion 122, and the ratio (Q) between the extension length of the first reinforcing portion 121 and the extension length of the frame body 110 can be combined with each other, and the present application does not make specific requirements on the mutual combination.

[0108] In combination with Figure 2 and Figure 3 In some embodiments, along the first direction (R), the extension length of the frame body 110 is L1, and L1 satisfies: 50 mm≤L1≤60 mm.

[0109] Exemplarily, the extension length L1 of the frame body 110 can be equal to 50 mm, 51 mm, 52 mm, 53 mm, 54 mm, 55 mm, 56 mm, 57 mm, 58 mm, 59 mm, 60 mm, etc., and the present application does not make specific requirements thereon, and L1 meeting the above numerical range is all acceptable.

[0110] It should be noted that the extension length of the frame body 110 along the first direction (R) is the distance between the two opposite outer side walls of the frame body 110 along the first direction (R).

[0111] In some embodiments, along the second direction (P), the extension length of the frame body 110 is L2, and L2 satisfies: 25 mm≤L2≤30 mm.

[0112] Exemplarily, the extension length L2 of the frame body 110 can be equal to 25 mm, 25.5 mm, 26 mm, 26.5 mm, 27 mm, 27.5 mm, 28 mm, 28.5 mm, 29 mm, 29.5 mm, 30 mm, etc., and the present application does not make specific requirements thereon, and L2 meeting the above numerical range is all acceptable.

[0113] It should be noted that the extension length of the frame body 110 along the second direction (P) is the distance between the two opposite outer side walls of the frame body 110 along the second direction (P).

[0114] In some embodiments, the thickness of the frame wall of the frame body 110 is t3, and t3 satisfies: 0.8 mm≤t3≤1.5 mm.

[0115] Exemplarily, the wall thickness t3 of the frame body 110 can be equal to 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc., and thickness values meeting the above numerical range are all acceptable, and the embodiments of the present application do not make specific requirements thereon.

[0116] It should be noted that in the embodiments of the present application, the extension length L1 of the frame body 110 along the first direction (R), the length L2 of the frame body 110 extending along the second direction (P), and the wall thickness t3 of the frame body 110 can be combined with each other, and the embodiments of the present application do not make specific requirements thereon.

[0117] Referring to Figure 2 In some embodiments, the frame 100 further comprises an extension section 130, which is arranged on one side of the frame body 110 outside along the first direction (R); the extension section 130 extends along the first direction (R). Through the arrangement of the extension section 130, the connection between the frame 100 and the battery tray 200 is stabilized through the connection between the extension section 130 and the battery tray 200.

[0118] It should be noted that the extension length of the extension section 130 along the first direction (R) meets the requirement that the side of the extension section 130 away from the frame body 110 abuts against the bottom surface of the battery tray 200.

[0119] In some embodiments, along the second direction (P), the extension section 130 is flush with the frame wall on one side of the frame body 110. In this way, through the flush of the extension section 130 with the frame wall of the frame body 110, a continuous plane or edge can be formed, thereby enhancing the structural integrity and integrity of the frame 100, and also facilitating the production and manufacturing of the frame 100.

[0120] Referring to Figure 2 In some embodiments, the reinforcing structure 120 further comprises a third reinforcing portion 123, which is arranged on the extension section 130 and connected with the frame wall of the frame body 110 extending along the second direction (P).

[0121] In this way, the connection of the third reinforcing portion 123 and the extension section 130 can further enhance the connection strength between the extension section 130 and the frame body 110, and avoid the deformation of the extension section 130. Furthermore, through the arrangement of the third reinforcing portion 123, the extension section 130 is supported and constrained, which helps to improve the extrusion resistance, bending resistance and torsion resistance of the frame 100, thereby improving the stability of the frame 100.

[0122] In some embodiments, the third reinforcing portion 123 and the extension section 130 intersect each other to form a stable triangular support structure, so as to provide additional support, enhance the extrusion resistance, bending resistance and torsional moment capacity of the frame 100, reduce the deformation of the frame 100 under external force, improve the stability of the frame 100 structure, and further reduce the deformation of the battery tray 200 when the frame 100 is applied to the battery tray 200, so as to enhance the safety of the battery pack 300.

[0123] In some embodiments, the frame body 110 is provided with a connecting hole 112 penetrating through the frame body 110 along the second direction (P).

[0124] It should be noted that the number of the connecting holes 112 can be multiple, and the multiple connecting holes 112 are arranged at intervals along the length direction (M) of the frame body 110.

[0125] Referring to Figure 6 In some embodiments, the frame 100 further comprises a lifting lug 140, and the lifting lug 140 and the connecting hole 112 are arranged one by one, and the lifting lug 140 and the frame body 110 are welded through the connecting hole 112. In the present application, the lifting lug 140 is arranged to facilitate the hoisting of the battery pack 300 when the frame 100 is applied to the battery tray 200.

[0126] In some embodiments, the frame body 110 is provided with a first electrophoresis hole (not shown in the figure), and the first electrophoresis hole is in communication with the accommodating cavity 111.

[0127] For example, the first electrophoresis hole can be arranged at the top or side of the frame body 110, so that the electrophoretic liquid can flow into the frame body 110 through the first electrophoresis hole, so as to cover the surface of the frame body 110 and the reinforcing structure 120 arranged in the frame body 110 with electrophoretic material, and improve the uniformity of the surface electrophoresis treatment of the frame 100.

[0128] In some embodiments, the extension section 130 is provided with a second electrophoresis hole (not shown in the figure) penetrating through the extension section 130 along a second direction (P). When the frame 100 is applied to the battery tray 200, the extension section 130 and the part of the bottom of the battery tray 200 are laminated, and the extension section 130 and the battery tray 200 are welded. In this way, the second electrophoresis hole is arranged on the extension section 130, so that the electrophoresis liquid flows through the second electrophoresis hole to the extension section 130 and the surface of the battery tray 200, so as to perform electrophoresis treatment on the extension section 130, the third reinforcing part 123 and the surface of the battery tray 200, and improve the corrosion resistance of the frame 100 and the surface of the battery tray 200.

[0129] In some embodiments, the frame body 110 is provided with a positioning hole (not shown in the figure) for installation and positioning of the frame 100 and the battery tray 200.

[0130] Referring to Figure 4 In the second aspect, the embodiments of the present application provide a battery tray 200, comprising the frame 100 in the above-mentioned embodiments.

[0131] The battery tray 200 in the embodiments of the present application includes the frame 100 in the above-mentioned embodiments, so that the structural stability of the battery tray 200 can be improved by the frame 100, the external force can be resisted by the frame 100, the extrusion deformation of the battery tray 200 can be prevented, the probability of thermal runaway of the battery cell caused by the deformation of the battery tray 200 can be reduced, and the safety of the battery pack 300 can be improved.

[0132] In some embodiments, the battery tray 200 further comprises a tray body 210, and the number of the frame 100 is at least two, and the at least two frames 100 are arranged on opposite sides of the tray body 210 along a third direction respectively; the third direction intersects with the height direction of the tray body 210.

[0133] In the embodiments of the present application, the two frames 100 are arranged on opposite sides of the tray body 210, the stress stability of the tray body 210 is ensured by the arrangement of the two frames 100, and the tray body 210 is protected by the frames 100 in multiple directions to prevent deformation of the side edges of the tray body 210, reduce the probability of thermal runaway of the battery cell caused by the deformation of the battery tray 200, and improve the safety of the battery pack 300.

[0134] Of course, the number of the frame 100 can also be four, and the four frames 100 can be arranged in sequence around the circumferential side of the tray body 210.

[0135] It should be noted that the third direction in the embodiments of the present application can be the width direction of the battery tray 200 or the length direction of the battery tray 200. The embodiments of the present application take the third direction along the width direction of the battery tray 200 as an example for description.

[0136] In some embodiments, the two sides of the frame 100 and the tray body 210 are welded along the height direction of the tray body 210. In this way, the frame 100 and the tray body 210 are stably connected by welding.

[0137] For example, the top of the frame 100 can be connected with the tray body 210 by arc welding and the bottom of the frame 100 can be connected with the tray body 210 by spot welding along the height direction of the tray body 210.

[0138] Referring to Figure 5 and Figure 6 In a third aspect, the embodiments of the present application provide a battery pack 300, comprising: a battery tray 200, a sealing cover 310, and a battery cell, the sealing cover 310 is arranged on the battery tray 200 to form a containing cavity 320, and the battery cell is arranged in the containing cavity 320.

[0139] It can be understood that the connection of the battery tray 200 and the sealing cover 310 forms a sealed containing cavity 320 to protect the battery cell inside. The battery pack 300 in the embodiments of the present application can improve the safety of the battery pack 300 because it includes the battery tray 200 in the second aspect.

[0140] In some embodiments, the battery pack 300 further comprises a protection member arranged at the bottom of the battery tray 200. In this way, the protection member protects the bottom of the battery tray 200, thereby protecting the battery pack 300 and reducing the deformation of the battery pack 300.

[0141] In a fourth aspect, the embodiments of the present application can also provide an electric device, comprising the frame 100 in the first aspect or the battery pack 300 in the third aspect.

[0142] It should be noted that the electric device in the embodiments of the present application includes a vehicle, an aircraft, a ferry, an energy storage system, a computer, etc., and the embodiments of the present application do not make specific requirements thereon.

[0143] It should be noted that a reference to "one embodiment," "an embodiment," "example embodiment," "some embodiments," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0144] In general, terminology can be understood at least in part from usage in context. For example, terms, such as "one or more" as used herein, can be understood as describing any feature, structure, or characteristic in a singular or multiple sense, depending at least in part on the context in which the term is used. Similarly, terms, such as "a," "an," or "the," again can be understood as describing either a singular or plural number of any feature, structure, or characteristic, depending at least in part on the context in which the term is used.

[0145] It will be readily understood that the terms "on," "above," and "over," as used herein, shall not be construed so as to mean only "directly on" but shall be interpreted to mean the aforementioned terms as well as "in" a medium in between, and that "above" or "over" shall be interpreted to mean the aforementioned terms as well as "above" or "over" without a medium in between (i.e., directly on).

[0146] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0147] Finally, it should be noted that the above-described embodiments are merely exemplary of the application and should not be used in a manner to limit the scope of the application. Those skilled in the art will be able to make numerous modifications and / or substitutions from the described specific embodiments without deviating from the application's spirit or scope.

Claims

1. A frame for use in a battery tray (200), characterized in that, The border (100) includes: A frame body (110) having a receiving cavity (111); A reinforcing structure (120) includes a first reinforcing portion (121) and a second reinforcing portion (122), the first reinforcing portion (121) and the second reinforcing portion (122) being located within the accommodating cavity (111); the first reinforcing portion (121) extends along a first direction; along the first direction, the second reinforcing portion (122) is disposed at at least one end of the first reinforcing portion (121); the second reinforcing portion (122) extends toward the inner wall of the frame body (110), and the extending direction of the second reinforcing portion (122) intersects the extending direction of the first reinforcing portion (121); The first direction intersects with the length direction of the frame body (110).

2. The frame according to claim 1, characterized in that, The second reinforcing part (122) is inclined relative to the first reinforcing part (121).

3. The frame according to claim 1, characterized in that, Along the first direction, the second reinforcement (122) extends toward the inner wall of the frame body (110) opposite to the first reinforcement (121).

4. The frame according to claim 1, characterized in that, The number of the second reinforcing parts (122) is at least two, and the at least two second reinforcing parts (122) are connected to the same end of the first reinforcing part (121); the extending directions of the at least two second reinforcing parts (122) intersect.

5. The frame according to claim 4, characterized in that, Along the second direction, the at least two second reinforcing portions (122) are located on opposite sides of the first reinforcing portion (121); The first direction, the second direction, and the length direction of the frame body (110) are perpendicular to each other.

6. The frame according to claim 5, characterized in that, Along the second direction, the at least two second reinforcing portions (122) are symmetrically arranged relative to the first reinforcing portion (121).

7. The frame according to claim 4, characterized in that, Along the first direction, the first reinforcing part (121) is provided with a second reinforcing part (122) at both ends.

8. The frame according to claim 7, characterized in that, Along the first direction, the second reinforcing portions (122) at both ends of the first reinforcing portion (121) are symmetrically arranged relative to the first reinforcing portion (121).

9. The frame according to claim 7, characterized in that, The first reinforcing part (121) and the second reinforcing part (122) divide the accommodating cavity (111) into a plurality of chambers. The sum of the cross-sectional areas of the plurality of chambers located at both ends of the first reinforcing part (121) along the first direction is less than the sum of the cross-sectional areas of the plurality of chambers located at both ends of the first reinforcing part (121) along the second direction. The first direction, the second direction and the length direction of the frame body (110) are perpendicular to each other.

10. The frame according to claim 9, characterized in that, The plurality of chambers include a first chamber (1111), a second chamber (1112), a third chamber (1113), and a fourth chamber (1114), wherein the first chamber (1111) and the third chamber (1113) are arranged along the second direction; and the second chamber (1112) and the fourth chamber (1114) are arranged along the first direction. The sum of the cross-sectional area of ​​the first chamber (1111) and the cross-sectional area of ​​the third chamber (1113) is S1, and the sum of the cross-sectional area of ​​the second chamber (1112) and the cross-sectional area of ​​the fourth chamber (1114) is S2. S1 and S2 satisfy: 1 / 3 ≤ (S2 / S1) ≤ 3 / 5.

11. The frame according to claim 4, characterized in that, The at least two second reinforcing parts (122) extend in directions with an included angle α; the included angle α satisfies: 66°≤α≤90°.

12. The frame according to any one of claims 1-11, characterized in that, Along the first direction, the ratio of the extension length of the first reinforcing part (121) to the extension length of the frame body (110) is Q, wherein Q satisfies: 0.25≤Q≤0.

5.

13. The frame according to any one of claims 1-11, characterized in that, The thickness of the first reinforcing part (121) is t1, and t1 satisfies: 0.8mm≤t1≤1.5mm; And / or, the thickness of the second reinforcing part (122) is t2, wherein t2 satisfies: 0.8mm≤t2≤1.5mm.

14. The frame according to any one of claims 1-11, characterized in that, Along the first direction, the extension length of the frame body (110) is L1, and L1 satisfies: 50mm≤L1≤60mm; And / or, along the second direction, the extension length of the frame body (110) is L2, wherein L2 satisfies: 25mm≤L2≤30mm, and the first direction, the second direction and the length direction of the frame body (110) are perpendicular to each other; And / or, the thickness of the frame wall of the frame body (110) is t3, wherein t3 satisfies: 0.8mm≤t3≤1.5mm.

15. The frame according to any one of claims 1-11, characterized in that, It also includes an extension segment (130) along the first direction, the extension segment (130) being disposed on one side outside the frame body (110); the extension segment (130) extending along the first direction.

16. The frame according to claim 15, characterized in that, Along the second direction, the extension segment (130) and the frame wall on one side of the frame body (110) are flush, and the first direction, the second direction and the length direction of the frame body (110) are perpendicular to each other.

17. The frame according to claim 15, characterized in that, The reinforcing structure (120) further includes a third reinforcing part (123), which is disposed on the extension section (130) and connected to the frame wall of the frame body (110) extending along the second direction. The first direction, the second direction and the length direction of the frame body (110) are perpendicular to each other.

18. The frame according to claim 17, characterized in that, The extension direction of the third reinforcing part (123) and the extension direction of the extension segment (130) have an angle, and the angle is an acute angle.

19. The frame according to any one of claims 1-11, characterized in that, The frame body (110) is provided with a connecting hole (112), which penetrates the frame body (110) along a second direction. The first direction, the second direction and the length direction of the frame body (110) are perpendicular to each other.

20. The frame according to claim 19, characterized in that, It also includes a lifting lug (140), which is provided one-to-one with the connecting hole (112), and the lifting lug (140) and the frame body (110) are welded through the connecting hole (112).

21. The frame according to any one of claims 1-11, characterized in that, The frame body (110) is provided with a first electrophoresis hole, which is connected to the accommodating cavity (111).

22. The frame according to claim 15, characterized in that, The extension section (130) is provided with a second electrophoresis hole, which penetrates the extension section (130) along a second direction. The first direction, the second direction and the length direction of the frame body (110) are perpendicular to each other.

23. A battery tray, characterized in that, include: The border (100) as described in any one of claims 1-22.

24. The battery tray according to claim 23, characterized in that, Also includes: The pallet body (210) has at least two borders (100), which are respectively disposed on opposite sides of the pallet body (210) along a third direction; the third direction intersects with the height direction of the pallet body (210).

25. The battery tray according to claim 24, characterized in that, Along the height direction of the tray body (210), the two sides of the frame (100) are welded to the tray body (210).

26. A battery pack, characterized in that, include: The battery tray (200) as described in any one of claims 23-25; A sealing cap (310) is placed over the battery tray (200) to enclose and form a receiving cavity (320); The battery cell is disposed within the receiving cavity (320).

27. An electrical appliance, characterized in that, include: The border (100) as described in any one of claims 1-22; Or, the battery pack (300) as described in claim 26.

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