Side beam of battery tray, battery tray, battery system and electric device

Abstract

Disclosed in the present application are a side beam of a battery tray, a battery tray, a battery system and an electric device. The side beam of a battery tray comprises a first transverse frame and a first longitudinal frame, wherein the first transverse frame has a first end and a second end opposite each other in the direction of width, and a first wall surface and a second wall surface opposite each other in the direction of thickness; a first rib plate and a second rib plate are provided inside the first transverse frame; the first rib plate is connected to the first wall surface and the second wall surface, and a first acute angle is formed between the first rib plate and the first wall surface; the second rib plate is connected to the end of the first wall surface close to the second end and the second wall surface; and the first longitudinal frame is connected to the second end, and the direction of width of the first longitudinal frame is perpendicular to that of the first transverse frame.

Description

Battery tray edge beam, battery tray, battery system and electric equipment

[0001] The present application claims priority to the Chinese patent application No. 202411295767.1 filed on September 14, 2024, and entitled "Battery tray edge beam, battery tray, battery system and electric equipment", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, more particularly, to a battery tray edge beam, a battery tray, a battery system and an electric equipment. BACKGROUND

[0003] The battery tray can support and protect the battery in the battery system, and install the battery through the battery tray to the electric equipment.

[0004] The battery tray generally includes a bottom structure and an edge beam. The edge beam of the battery tray can withstand lateral extrusion and protect the side of the battery to reduce the damage degree of the battery. In order to improve the strength of the edge beam, a rib position is arranged in the edge beam.

[0005] However, the rib positions in the edge beam in the above-mentioned related technology are too many, which leads to the increase of the manufacturing cost and weight of the edge beam, and also leads to the increase of the manufacturing cost and weight of the battery system and the electric equipment. SUMMARY

[0006] The present application aims to provide a battery tray edge beam, a battery tray, a battery system and an electric equipment, which can solve the technical problem that the rib positions in the edge beam in the above-mentioned related technology are too many, which leads to the increase of the manufacturing cost and weight of the edge beam, and also leads to the increase of the manufacturing cost and weight of the battery system and the electric equipment.

[0007] In a first aspect, the present application discloses a battery tray edge beam, comprising:

[0008] A first horizontal frame has a first end portion and a second end portion arranged oppositely in the width direction of the first horizontal frame, and has a first wall surface and a second wall surface arranged oppositely in the thickness direction of the first horizontal frame. The first horizontal frame has a first rib plate and a second rib plate arranged at intervals therein.

[0009] One end of the first rib plate is connected to the first wall surface, and the other end is connected to the second wall surface. A first acute angle is formed between the first rib plate and the first wall surface.

[0010] One end of the second rib plate is connected to the first wall surface close to one end of the second end portion, and the other end is connected to the second wall surface.

[0011] A first longitudinal frame connected to the second end portion of the first horizontal frame, a width extension direction of the first longitudinal frame being perpendicular to a width extension direction of the first horizontal frame.

[0012] In some embodiments, the first acute angle is greater than or equal to 50° and less than or equal to 70°.

[0013] In some embodiments, one end of the first web plate, which is closer to the first end portion than the other end of the first web plate, is closer to the second end portion of the first horizontal frame.

[0014] In some embodiments, the second wall surface comprises:

[0015] A first wall section disposed closer to the first end portion, and one end of the first web plate connected to the first wall section.

[0016] A second wall section connected to an end of the first wall section away from the first end portion, and one end of the second web plate connected to the second wall section away from the first wall surface.

[0017] In some embodiments, along the width direction of the first horizontal frame, a distance from the connection between the first web plate and the first wall surface to the first end portion is a first distance, a distance from the connection between the first wall section (141) and the first web plate (150) to the first end portion (110) is a second distance, and the first distance accounts for greater than or equal to 65% and less than or equal to 75% of the second distance.

[0018] In some embodiments, the first wall section comprises:

[0019] A first straight section to which the first web plate is connected;

[0020] A second straight section connected at one end to an end of the first straight section away from the first end portion, and extending away from the first wall surface at the other end and connected to an end of the second wall section away from the second end portion.

[0021] The extension direction of the second straight section intersects the extension direction of the first straight section.

[0022] In some embodiments, along the width direction of the first horizontal frame, a distance from the connection between the first web plate and the first wall surface to the first end portion is a first distance, and the first distance accounts for greater than or equal to 65% and less than or equal to 75% of the width of the first straight section.

[0023] In some embodiments, along the width direction of the first horizontal frame, the width of the first straight section is greater than or equal to 50 mm and less than or equal to 60 mm.

[0024] In some embodiments, the first connecting point is located at a middle portion of the second wall segment.

[0025] In some embodiments, a wall thickness between the first connecting point and the second end portion is greater than a wall thickness between the first connecting point and the first end portion.

[0026] In some embodiments, the first connecting point is located at a middle portion of the second wall segment.

[0027] In some embodiments, a wall thickness between the first connecting point and the second end portion is greater than or equal to 5 mm and less than or equal to 10 mm.

[0028] In some embodiments, a second cross frame is further included, the second cross frame is disposed on a side of the second wall surface facing away from the first wall surface, and the second cross frame is disposed close to the second end portion.

[0029] In some embodiments, the second cross frame has a third wall surface opposite to the second wall surface in a thickness direction of the first cross frame.

[0030] A width of the third wall surface is greater than or equal to 10 mm and less than or equal to 20 mm.

[0031] A wall thickness of the third wall surface is greater than or equal to 2 mm and less than or equal to 4 mm.

[0032] In some embodiments, a wall thickness of the first wall surface is greater than or equal to 2 mm and less than or equal to 4 mm.

[0033] In some embodiments, a wall thickness of the second wall surface is greater than or equal to 2 mm and less than or equal to 4 mm.

[0034] In some embodiments, the first longitudinal frame has a third rib plate.

[0035] In a thickness direction of the first longitudinal frame, the first longitudinal frame includes a fourth wall surface and a fifth wall surface opposite to each other, one end of the fourth wall surface is connected to one end of the first wall surface close to the second end portion.

[0036] The third rib plate includes a first end and a second end opposite to each other, the first end is connected to the fourth wall surface, the second end is connected to the fifth wall surface, and the second end is closer to the first cross frame relative to the first end.

[0037] In some embodiments, the third rib plate intersects with the thickness direction of the first longitudinal frame and forms a second acute angle.

[0038] In some embodiments, an angle of the second acute angle is greater than or equal to 15° and less than or equal to 30°.

[0039] In some embodiments, the third rib plate has a first end and a second end, and the first end is connected to the fourth wall surface, and the second end is connected to the fifth wall surface.

[0040] The second distance accounts for 20% to 30% of the width of the fourth wall surface.

[0041] In some embodiments, the first longitudinal frame further comprises a fourth rib plate.

[0042] The fourth rib plate has a third end and a fourth end arranged oppositely.

[0043] The third end is connected to the fourth wall surface, and the third end is arranged at a side of the first end away from the first horizontal frame.

[0044] The fourth end is connected to the fifth wall surface and is connected to the second end of the third rib plate.

[0045] In some embodiments, the fourth rib plate intersects the thickness direction of the first longitudinal frame and forms a third acute angle.

[0046] The third acute angle is greater than or equal to 30° and less than or equal to 40°.

[0047] In some embodiments, the third end is connected to the fourth wall surface, and the third end is connected to the fourth wall surface.

[0048] The third distance accounts for 10% to 20% of the width of the fourth wall surface.

[0049] In some embodiments, the first longitudinal frame further comprises a sixth wall surface.

[0050] One end of the sixth wall surface is connected to the end of the fourth wall surface away from the first horizontal frame, and the other end of the sixth wall surface is connected to the end of the fifth wall surface away from the first horizontal frame.

[0051] The sixth wall surface has a groove, and the groove has a groove opening facing the outside of the first longitudinal frame.

[0052] In some embodiments, the distance from the groove to the fourth wall surface in the width direction of the sixth wall surface is greater than or equal to 15mm and less than or equal to 20mm.

[0053] In some embodiments, the width of the groove is greater than or equal to 5mm.

[0054] And / or, the depth of the groove is greater than or equal to 1mm.

[0055] In some embodiments, the first longitudinal frame further comprises a seventh wall surface;

[0056] One end of the seventh wall surface is connected to one end of the second wall surface away from the first end portion, and the other end of the seventh wall surface is connected to the fifth wall surface.

[0057] In some embodiments, the width of the seventh wall surface is greater than or equal to 10 mm and less than or equal to 30 mm;

[0058] And / or, the wall thickness of the seventh wall surface is greater than or equal to 5 mm and less than or equal to 10 mm;

[0059] And / or, the wall thickness of the fourth wall surface is greater than or equal to 2 mm and less than or equal to 4 mm;

[0060] And / or, the wall thickness of the fifth wall surface is greater than or equal to 2 mm and less than or equal to 4 mm;

[0061] And / or, the wall thickness of the sixth wall surface is greater than or equal to 2 mm and less than or equal to 4 mm.

[0062] In some embodiments, a second longitudinal frame is further included;

[0063] One end of the second longitudinal frame is arranged on the fourth wall surface, and the other end of the second longitudinal frame extends away from the fourth wall surface, and the second longitudinal frame is used to connect with the vehicle body.

[0064] In some embodiments, the second longitudinal frame comprises:

[0065] An eighth wall surface, one end of which is connected to the fourth wall surface and is used to connect with the vehicle body;

[0066] A ninth wall surface, one end of which is connected to the other end of the eighth wall surface away from the sixth wall surface, and the other end of which is connected to the fourth wall surface; the connection point of the ninth wall surface and the fourth wall surface is arranged on the side of the fourth wall surface away from the first transverse frame.

[0067] In some embodiments, one end of the ninth wall surface is connected to the first end of the third rib plate.

[0068] In some embodiments, the wall thickness of the eighth wall surface is greater than or equal to 2 mm and less than or equal to 4 mm;

[0069] And / or, the wall thickness of the ninth wall surface is greater than or equal to 2 mm and less than or equal to 4 mm;

[0070] And / or, the width of the eighth wall surface is greater than or equal to 15 mm and less than or equal to 30 mm.

[0071] The second aspect discloses a battery tray, comprising a bottom frame and a side frame, at least part of the side frame adopts the edge beam of the battery tray as described above;

[0072] The first cross frame of the edge beam is connected with the bottom frame.

[0073] The third aspect discloses a battery system, comprising a battery and the battery tray as described above.

[0074] The fourth aspect discloses an electric device, comprising an electric device and the battery system as described above, the battery system is used for providing electric energy for the electric device.

[0075] The battery tray of the present application comprises an edge beam, the edge beam is formed by arranging a first rib plate and a second rib plate in the first cross frame, and connecting one end of the first rib plate to the first wall surface of the first cross frame and the other end to the second wall surface opposite to the first wall surface, the first rib plate is closer to the first end of the first cross frame than the second rib plate, and a first acute angle is formed between the first rib plate and the first wall surface, so that the first rib plate can improve the lateral extrusion resistance of the first cross frame near the first end and the first-order modal of the first cross frame in the thickness direction of the first cross frame. One end of the second rib plate is connected to the first wall surface near the second end, and the other end is connected to the second wall surface, so that the second rib plate is closer to the second end of the first cross frame than the first rib plate, so that the second rib plate improves the lateral extrusion resistance of the first cross frame near the second end and the first-order modal in the thickness direction of the first cross frame, thereby realizing the structural strength of the edge beam with less rib plates, thereby reducing the manufacturing cost and weight of the edge beam. BRIEF DESCRIPTION OF DRAWINGS

[0076] Fig. 1 is a structural schematic diagram of an edge beam provided by an embodiment of the present application;

[0077] Fig. 2 is a cross-sectional schematic diagram of an edge beam provided by an embodiment of the present application;

[0078] Fig. 3 is a structural schematic diagram of a battery tray provided by an embodiment of the present application;

[0079] Fig. 4 is a structural schematic diagram of another edge beam provided by an embodiment of the present application;

[0080] Fig. 5 is a stress nephogram of the edge beam in Fig. 4 simulated by an embodiment of the present application;

[0081] Fig. 6 is a schematic diagram of a battery system provided by an embodiment of the present application;

[0082] Fig. 7 is a schematic diagram of an electric device provided by an embodiment of the present application.

[0083] 10-side frame; 20-bottom frame; 30-battery tray; 40-battery; 50-battery system; 60-electric device; 70-electric apparatus; 11-side beam; 100-first horizontal frame; 110-first end; 120-second end; 130-first wall surface; 140-second wall surface; 150-first rib plate; 160-second rib plate; 141-first wall segment; 142-second wall segment; 1411-first straight segment; 1412-second straight segment; 200-first vertical frame; 210-fourth wall surface; 220-fifth wall surface; 230-sixth wall surface; 240-seventh wall surface; 250-third rib plate; 260-fourth rib plate; 231-groove; 251-first end; 252-second end; 261-third end; 262-fourth end; 300-second horizontal frame; 310-third wall surface; 400-second vertical frame; 410-eighth wall surface; 420-ninth wall surface. DETAILED DESCRIPTION

[0084] In the related art, there are many rib positions in the side frame, which increases the manufacturing cost and weight of the side frame, and also increases the manufacturing cost and weight of the battery system and the electric device.

[0085] Referring to FIG. 1, the reason for this problem is that the rib positions in the side frame are not reasonably designed. In order to improve the structural strength of the side frame, a plurality of rib positions are provided in the side frame to improve the structural strength of the side frame. This way of improving the structural strength of the side frame by increasing the rib positions will increase the manufacturing cost and weight of the side beam, and further increase the manufacturing cost and weight of the battery system and the electric device.

[0086] To solve the above technical problems, the embodiments of the present application provide a side beam of a battery tray, a battery tray, a battery system and an electric device. The side beam is provided with a first rib plate and a second rib plate inside a first horizontal frame. One end of the first rib plate is connected to a first wall surface of the first horizontal frame, and the other end is connected to the first wall surface opposite to a second wall surface. The first rib plate is closer to a first end of the first horizontal frame than the second rib plate, and a first acute angle is formed between the first rib plate and the first wall surface. The first rib plate can improve the lateral extrusion resistance of the first horizontal frame near the first end, and also improve the first-order modal of the first horizontal frame in the thickness direction of the first horizontal frame near the first end.

[0087] By connecting one end of the second rib plate to the first wall surface near the one end of the second end portion and the other end to the second wall surface, the second rib plate is arranged close to the second end portion of the first horizontal frame relative to the first rib plate, so as to improve the lateral extrusion resistance of the first horizontal frame at the position close to the second end portion and the first-order modal in the thickness direction of the first horizontal frame, thereby achieving the structural strength of the edge beam with less rib plates, and reducing the manufacturing cost and weight of the edge beam.

[0088] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0089] Referring to FIGS. 1 and 2, the embodiments of the present application provide an edge beam 11 of a battery tray, which can include a first horizontal frame 100 and a second vertical frame 200.

[0090] In some embodiments, the first vertical frame 200 and the first horizontal frame 100 can be an integrated structure. The first vertical frame 200 and the first vertical frame 200 can each be a metal frame structure.

[0091] It can be understood that the structural strength of the edge beam 11 of the battery tray can generally be measured by the lateral extrusion resistance and the first-order modal.

[0092] The lateral extrusion resistance can be in the X direction as shown in FIG. 2, and in a specific implementation, the battery tray is easily subjected to lateral extrusion applied by the external environment on the edge beam 11.

[0093] The first-order modal can be the change of the first-order modal of the edge beam 11 in the height direction (e.g., the Y direction in FIG. 2). When the first-order modal is low, the excitation of the resonance point on the edge beam 11 increases, thereby increasing the force acting on the edge beam 11 and the battery tray, which can easily cause damage to the tray, such as deformation, cracking, and the like. When the edge beam 11 includes the first horizontal frame 100 and the first vertical frame 200, the first-order modal of the first horizontal frame 100 in the Y direction and the first-order modal of the first vertical frame 200 in the Y direction both affect the change of the first-order modal of the edge beam 11 in the Y direction.

[0094] Referring to FIG. 2, in the width direction of the first horizontal frame 100 (e.g., the X direction in FIG. 2), the first horizontal frame 100 has a first end portion 110 and a second end portion 120 arranged opposite to each other.

[0095] It should be noted that the dashed line in FIG. 2 is used to indicate the specific position of the second end portion 120, and does not represent that the second end portion 120 and the first longitudinal frame 200 have the connection trace or connection structure on the actual edge beam 11.

[0096] In the thickness direction (Y direction in FIG. 2) of the first horizontal frame 100, the first horizontal frame 100 has oppositely arranged first and second wall surfaces 130 and 140, and the first horizontal frame 100 has oppositely arranged first and second rib plates 150 and 160. The first rib plate 150 is closer to the first end portion 110 than the second rib plate 160, and the second rib plate 160 is closer to the second end portion 120 than the first rib plate 150.

[0097] It can be understood that the second end portion 120 can be the connection between the end of the first wall surface 130 facing away from the first end portion 110 and the first longitudinal frame 200.

[0098] In some embodiments, the first wall surface 130 and the second wall surface 140 can be parallel, and the widths of the first wall surface 130 and the second wall surface 140 can also be approximately equal.

[0099] One end of the first rib plate 150 is connected to the first wall surface 130, and the other end is connected to the second wall surface 140, and a first acute angle is formed between the first rib plate 150 and the first wall surface 130. The end of the first rib plate 150 connected to the first wall surface 130 can be closer to the first end portion 110 of the first horizontal frame 100 than the end of the first rib plate 150 connected to the second wall surface 140.

[0100] In some embodiments, the side of the second wall surface 140 facing away from the first wall surface 130 can be used to mount an ear (not shown in the figure). The end of the first rib plate 150 facing the second wall surface 140 is closer to the second end portion 120 of the first horizontal frame 100 than the end of the first rib plate 150 facing the first wall surface 130, so as to make the support force of the first rib plate 150 on the second wall surface 140 more uniform.

[0101] In this way, the first rib plate 150 can play a role in transmitting the battery gravity to the ear, and when transmitting the battery gravity to the ear, the force transmission path is from the obliquely downward direction of the side of the first rib plate 150 closer to the second end portion to the obliquely upward direction of the side of the first rib plate 150 closer to the first end portion. The end of the first rib plate 150 facing the second wall surface 140 is closer to the second end portion 120 of the first horizontal frame 100 than the end of the first rib plate 150 facing the first wall surface 130, so that the oblique direction of the first rib plate 150 is approximately the same as the force transmission path direction, and the first rib plate 150 matches the force transmission path direction, so as to provide sufficient support.

[0102] One end of the second rib plate 160 is connected to one end of the first wall surface 130 close to the second end portion 120, and the other end is connected to the second wall surface 140. The end of the second rib plate 160 connected to the second wall surface 140 is closer to the first end portion 110 of the first horizontal frame 100 than the end of the second rib plate 160 connected to the first wall surface 130.

[0103] One end of the first longitudinal frame 200 is connected to the second end portion 120 of the first horizontal frame 100, and the other end extends away from the first horizontal frame 100. The width extension direction (Y direction in FIG. 2) of the first longitudinal frame 200 is perpendicular to the width extension direction (X direction in FIG. 2) of the first horizontal frame 100.

[0104] In some examples, the first rib plate 150, the second rib plate 160, and the first horizontal frame 100 and the first longitudinal frame 200 can be an integrated structure.

[0105] The edge beam 11 of the battery tray provided by the embodiments of the present application is configured by arranging the first rib plate 150 and the second rib plate 160 inside the first horizontal frame 100, connecting one end of the first rib plate 150 to the first wall surface 130 of the first horizontal frame 100, connecting the other end of the first rib plate 150 to the second wall surface 140 opposite to the first wall surface 130, and connecting the first rib plate 150 to the second rib plate 160 close to the first end portion 110 of the first horizontal frame 100, and forming a first acute angle between the first rib plate 150 and the first wall surface 130, so that the first rib plate 150 can improve the lateral extrusion resistance of the first horizontal frame 100 close to the first end portion 110 and improve the first-order modal shape of the first horizontal frame 100 in the thickness direction of the first horizontal frame 100 close to the first end portion 110.

[0106] Further, one end of the second rib plate 160 is connected to one end of the first wall surface 130 close to the second end portion 120, and the other end is connected to the second wall surface 140, so that the second rib plate 160 is closer to the second end portion 120 of the first horizontal frame 100 than the first rib plate 150, so that the second rib plate 160 improves the lateral extrusion resistance of the first horizontal frame 100 close to the second end portion 120 and improves the first-order modal shape of the first horizontal frame 100 in the thickness direction of the first horizontal frame 100, thereby achieving the lateral extrusion resistance and the first-order modal shape of the edge beam 11 with fewer rib plates, thereby reducing the manufacturing cost and weight of the edge beam 11.

[0107] Referring to FIG. 3, the application further provides a battery tray 30, which can include the bottom frame 20 and the side frame 10, at least part of the side frame 10 being the above-mentioned edge beam 11. For example, when the side frame 10 is a cuboid frame, the side frame 10 has four side walls, and one of the side walls can be the above-mentioned edge beam 11, or both of the opposite side walls can be the above-mentioned edge beam 11, or all of the four side walls can be the above-mentioned edge beam 11. The side frame 10 is arranged around the bottom frame 20, and the battery can be installed in the battery tray 30 surrounded by the side frame 10 and the bottom frame 20. The battery tray 30 can further include an upper cover, and the battery tray 30 has an opening surrounded by the side frame 10, and the upper cover covers the opening.

[0108] In the edge beam 11, the first horizontal frame 100 can be arranged on the bottom frame 20 and used to connect with the bottom frame 20. The first horizontal frame 100 can be connected with the bottom frame 20 by welding.

[0109] The first longitudinal frame 200 in the edge beam 11 can be used to connect with the upper cover. For example, the upper cover can cover one end of the first longitudinal frame 200 away from the bottom frame 20, and the upper cover is used to seal the battery in the battery tray 30. In some examples, the first longitudinal frame 200 and the upper cover can be connected by a connecting piece, and the sealing of the joint between the upper cover and the first longitudinal frame 200 can be achieved by arranging a sealing material at the joint.

[0110] Referring to FIG. 3, the application provides a battery tray 30, which includes a bottom frame 20 and a side frame 10, at least part of the side frame 10 being the above-mentioned edge beam 11, so as to improve the lateral extrusion resistance of the side frame 10 and the first-order modal of the side frame 10, and further improve the structural strength of the battery tray 30.

[0111] Referring to FIG. 2, in some examples, the first acute angle (such as the angle a in FIG. 2) is greater than or equal to 50°

[0112] and less than or equal to 70°. For example, the first acute angle can be one of 52°, 55°, 60°, 63° and 67°, or the first acute angle can be any value within the range of greater than or equal to 50° and less than or equal to 70°.

[0113] In this way, by limiting the angle of the first acute angle to the range of greater than or equal to 50° and less than or equal to 70°, the component of the first rib plate 150 in the thickness direction of the first horizontal frame 100 can be avoided due to the too small angle of the first acute angle, and the first-order modal of the first horizontal frame 100 in the thickness direction is reduced. The problem of reducing the lateral extrusion resistance of the first horizontal frame 100 due to the too large angle of the first acute angle can also be avoided.

[0114] Referring to FIGS. 2 and 4, in some embodiments, the second wall surface 140 can include a first wall segment 141 and a second wall segment 142 connected to each other. The first wall segment 141 is disposed close to the first end portion 110, and one end of the first rib plate 150 is connected to the first wall segment 141. The second wall segment 142 is connected to the first wall segment 141 at an end thereof away from the first end portion 110, and one end of the second rib plate 160 away from the first wall surface 130 is connected to the second wall segment 142. In some examples, the first wall segment 141 and the second wall segment 142 can be of an integral structure.

[0115] Referring to FIG. 4, in some embodiments, the one end of the second rib plate 160 away from the first wall surface 130 can be located at a middle portion of the second wall segment 142.

[0116] Referring to FIG. 2, in some embodiments, along a width direction (e.g., the X direction in FIG. 2) of the first cross frame 100, a distance from a connection between the first rib plate 150 and the first wall surface 130 to the first end portion 110 is a first distance, and a distance from a connection between the first rib plate 150 and the first wall segment 141 to the first end portion 110 is a second distance. A percentage of the first distance (e.g., L1 in FIG. 2) to the second distance (e.g., L2 in FIG. 2) is greater than or equal to 65% and less than or equal to 75%.

[0117] Referring to FIG. 2, it can be understood that the first cross frame 100 has an end wall disposed at the first end portion 110, and the end wall is connected to the first wall surface 130 at one end thereof and connected to the second wall surface 140 at the other end thereof. One end of the first distance L1 is a connection between a surface of the first rib plate 150 facing the first end portion 110 and the first wall surface 130, or a connection between a surface of the first rib plate 150 away from the first end portion 110 and the first wall surface 130. The other end can extend to a surface of the end wall of the first cross frame 100 facing the first rib plate 150, or the other end can also extend to a surface of the end wall of the first cross frame 100 away from the first rib plate 150.

[0118] Further, one end of the second distance L2 is a connection between a surface of the first rib plate 150 facing the first end portion 110 and the second wall surface 140, or a connection between a surface of the first rib plate 150 away from the first end portion 110 and the second wall surface 140. The other end can extend to a surface of the end wall of the first cross frame 100 facing the first rib plate 150, or the other end can also extend to a surface of the end wall of the first cross frame 100 away from the first rib plate 150.

[0119] In some embodiments, the percentage of the first distance L1 to the second distance L2 can be one of 67%, 70%, 71%, and 74%, or any value within a range of greater than or equal to 65% and less than or equal to 75%.

[0120] In this way, when the percentage of the first distance to the second distance exceeds a range of greater than or equal to 65% and less than or equal to 75%, the first cross frame 100 can avoid falling in the first-order main mode in the thickness direction, thereby avoiding the increase in the excitation of the resonance point on the first cross frame 100 due to the fall in the first-order mode, and avoiding the increase in the force acting on the tray, thereby reducing the probability of damage to the tray.

[0121] Referring to FIG. 4, in some embodiments, the first wall segment 141 can include a first straight segment 1411 and a second straight segment 1412. The first rib 150 is connected to the first straight segment 1411. One end of the second straight segment 1412 is connected to the end of the first straight segment 1411 away from the first end portion 110, and the other end extends away from the first wall surface 130 and is connected to the end of the second wall segment 142 away from the second end portion 120. The extension direction of the second straight segment 1412 intersects the extension direction of the first straight segment 1411.

[0122] In this way, by intersecting the extension direction of the second straight segment 1412 with the extension direction of the first straight segment 1411, the ability of the first cross frame 100 to resist lateral impact can be improved by the second straight segment 1412, and the first-order main mode of the second cross frame 300 in the thickness direction can be improved, further improving the strength of the first cross frame 100 and the strength of the frame of the battery tray 30.

[0123] Referring to FIG. 4, in some embodiments, along the width direction of the first cross frame 100, the distance from the connection of the first rib 150 to the first wall surface 130 to the first end portion 110 is a first distance (L1 in FIG. 4), and the percentage of the first distance to the width (L3 in FIG. 4) of the first straight segment 1411 is greater than or equal to 65% and less than or equal to 75%.

[0124] In some embodiments, the percentage of the first distance L1 to the width L3 of the first straight segment 1411 can be one of 67%, 70%, 71%, and 74%, or any point value within a range of greater than or equal to 65% and less than or equal to 75%.

[0125] In some embodiments, one end of the first straight segment 1411 can extend to the inner surface of the first cross frame 100 near the end wall of the first end portion 110 facing the first rib 150, or can extend to the outer surface of the end wall facing away from the first rib 150. The other end of the first straight segment 1411 can be the connection between the outer surface of the first straight segment 1411 facing away from the first wall surface 130 and the outer surface of the second straight segment 1412 facing away from the first wall surface 130.

[0126] In this way, the first lateral frame 100 can avoid the first-order main modal drop in the thickness direction when the first distance exceeds the range of greater than or equal to 65% and less than or equal to 75% of the width of the first straight section 1411, thereby avoiding the increase in the excitation of the resonance point on the first lateral frame 100 due to the first-order modal drop and the increase in the force acting on the tray, and reducing the probability of damage to the tray.

[0127] Referring to FIG. 4, in some embodiments, the width of the first straight section 1411 is greater than or equal to 50 mm and less than or equal to 60 mm along the width direction of the first lateral frame 100 (e.g., the X direction in FIG. 4). For example, the width of the first straight section 1411 can be one of 53 mm, 55 mm, 57 mm, and 58 mm, or any value within the range of greater than or equal to 50 mm and less than or equal to 60 mm.

[0128] In this way, by making the width of the first straight section 1411 greater than or equal to 50 mm and less than or equal to 60 mm, the width of the first wall 130 and the second wall 140 related to the first straight section 1411 can be prevented from being excessively large due to the large width of the first straight section 1411, thereby preventing the width of the first lateral frame 100 from being excessively large and increasing the manufacturing cost of the first lateral frame 100, and reducing the manufacturing cost of the battery tray 30.

[0129] Referring to FIG. 4, in some embodiments, the connection between the second rib plate 160 and the second wall 140 is a first connection point. On the second wall 140, the wall thickness between the first connection point and the second end 120 is greater than the wall thickness between the first connection point and the first end 110.

[0130] In this way, the structural strength of the part of the wall between the first connection point and the second end 120 can be improved, thereby improving the lateral extrusion resistance of this part of the wall and the first-order modal of the first lateral frame 100. When this part of the structure is used for welding with other structures, the weldability between this part of the structure and the other structures can also be improved by increasing the wall thickness of this part of the structure.

[0131] Referring to FIG. 4, in some embodiments, the wall thickness (e.g., h1 in FIG. 4) between the first connection point and the second end 120 on the second wall 140 is greater than or equal to 5 mm and less than or equal to 10 mm. For example, the wall thickness between the first connection point and the second end 120 can be one of 5 mm, 6 mm, 7 mm, 7.2 mm, 8 mm, and 9 mm, or any value within the range of greater than or equal to 5 mm and less than or equal to 10 mm.

[0132] In this way, the structural strength of the second wall surface 140 at this portion can be ensured, the wall thickness of this portion can be prevented from being excessively large, the manufacturing cost of the first cross frame 100 can be prevented from increasing, and the cost of the edge beam 11 can be prevented from increasing.

[0133] Referring to FIG. 4, in some embodiments, the edge beam 11 of the battery tray can further include a second cross frame 300, which is arranged on the side of the second wall surface 140 away from the first wall surface 130 and is arranged close to the second end portion 120.

[0134] In this way, by arranging the second cross frame 300, the second cross frame 300 can be used to connect the battery protection plate of the battery tray 30, and the practicability of the edge beam 11 can be improved.

[0135] If the second wall surface 140 has the first wall segment 141 and the second wall segment 142, the second cross frame 300 can be connected to the side of the second wall segment 142 away from the first wall surface 130 and used to connect the protection plate of the battery.

[0136] Referring to FIG. 4, in some embodiments, in the thickness direction (e.g., the Y direction in FIG. 4) of the first cross frame 100, the second cross frame 300 has a third wall surface 310 arranged opposite to the second wall surface 140. The width (e.g., L4 in FIG. 4) of the third wall surface 310 is greater than or equal to 10 mm and less than or equal to 20 mm.

[0137] It can be understood that the width L4 of the third wall surface 310 is the width of the third wall surface away from the outer surface of the first cross frame in the width direction (e.g., the X direction in FIG. 4) of the first cross frame.

[0138] In some embodiments, the width L4 of the third wall surface 310 can be one of 11 mm, 13 mm, 14 mm, 16 mm, 17 mm, 18 mm, and 19 mm, or any value within the range of greater than or equal to 10 mm and less than or equal to 20 mm.

[0139] In this way, by the width of the third wall surface 310 being greater than or equal to 10 mm and less than or equal to 20 mm, the third wall surface 310 can have sufficient connection area with the battery protection plate of the battery tray 30, so as to ensure the connection stability between the third wall surface 310 and the battery tray 30, and the third wall surface 310 can be prevented from being excessively wide, so as to prevent the manufacturing cost of the second cross frame 300 from increasing, and the manufacturing cost of the edge beam 11 can be reduced.

[0140] Referring to FIGS. 2 and 4, in some embodiments, the first longitudinal frame 200 has a third rib plate 250, and the third rib plate 250 and the first longitudinal frame 200 can be in an integrated structure.

[0141] In the thickness direction (e.g., the X direction in FIG. 4) of the first longitudinal frame 200, the first longitudinal frame 200 can include a fourth wall surface 210 and a fifth wall surface 220 disposed opposite to each other, one end of the fourth wall surface 210 being connected to the first wall surface 130 near one end of the second end portion 120.

[0142] The third rib plate 250 can include a first end 251 and a second end 252 disposed opposite to each other, the first end 251 being connected to the fourth wall surface 210, the second end 252 being connected to the fifth wall surface 220, and the second end 252 being closer to the first transverse frame 100 than the first end 251.

[0143] In some examples, in the width direction (e.g., the Y direction in FIG. 4) of the first longitudinal frame 200, the second end 252 of the third rib plate 250 is closer to the first transverse frame 100 than the first end 251.

[0144] In this way, by providing the third rib plate 250 in the first longitudinal frame 200 and connecting one end of the third rib plate 250 to the fourth wall surface 210 of the first longitudinal frame 200 and connecting the other end of the third rib plate 250 to the fifth wall surface 220 of the first longitudinal frame 200, the lateral extrusion resistance of the first longitudinal frame 200 can be improved, and thus the lateral extrusion resistance of the side beam 11 of the battery tray can be improved.

[0145] Referring to FIG. 4, in some embodiments, the third rib plate 250 forms a second acute angle with the thickness direction of the first longitudinal frame 200. The second acute angle (e.g., the β angle in FIG. 4) is greater than or equal to 15° and less than or equal to 30°.

[0146] In some embodiments, the second acute angle can be one of 16°, 18°, 19°, 20°, 21°, 23°, 26°, and 28°, or any value within a range greater than or equal to 15° and less than or equal to 30°.

[0147] In this way, by intersecting the third rib plate 250 with the thickness direction of the first longitudinal frame 200 to make the second acute angle greater than or equal to 15° and less than or equal to 30°, the third rib plate 250 can not only improve the lateral extrusion resistance of the first longitudinal frame 200, but also improve the first-order modal of the first longitudinal frame 200, enriching the functions of the third rib plate 250.

[0148] Furthermore, by making the angle of the second acute angle greater than or equal to 15° and less than or equal to 30°, the third rib plate 250 can ensure that the first-order modal of the first longitudinal frame 200 is improved, and more functions for improving the lateral extrusion resistance of the first longitudinal frame 200 are provided.

[0149] Referring to FIG. 4, in some embodiments, the first end 251 of the third rib plate 250 is spaced apart from the second end portion 120 of the first horizontal frame 100 by a second distance (L5 in FIG. 4) in the width direction (Y direction in FIG. 4) of the fourth wall surface 210. The second distance L5 accounts for a percentage of the width (L6 in FIG. 4) of the fourth wall surface 210 that is greater than or equal to 20% and less than or equal to 30%.

[0150] Referring to FIG. 4, it can be understood that the second distance L5 can be a distance between an inner surface of the sixth wall surface 230 and a surface of the first end 251 facing the sixth wall surface 230. Alternatively, the second distance L5 can also be a distance between an outer surface of the sixth wall surface 230 and a surface of the first end 251 facing the sixth wall surface 230.

[0151] The width of the fourth wall surface 210 can be a distance between an outer surface of the first wall surface 130 and an inner surface of the sixth wall surface 230 in the width direction (Y direction in FIG. 4) of the first longitudinal frame 200.

[0152] In some embodiments, the percentage of the second distance L5 with respect to the width L6 of the fourth wall surface 210 can be one of 21%, 23%, 24%, 25%, 27%, and 29%, or any value within a range greater than or equal to 20% and less than or equal to 30%.

[0153] In this way, since the first longitudinal frame 200 has an end facing away from the first horizontal frame 100, the first horizontal frame 100 cannot share the lateral extrusion force received by the first longitudinal frame 200, and by making the percentage of the second distance with respect to the width of the fourth wall surface 210 greater than or equal to 20% and less than or equal to 30%, the third rib plate 250 can be positioned close to the side of the first longitudinal frame 200 facing away from the first horizontal frame 100, so that the third rib plate 250 can improve the lateral extrusion resistance of the portion of the first longitudinal frame 200 facing away from the first horizontal frame 100.

[0154] Referring to FIG. 4, in some embodiments, the first longitudinal frame 200 further has a fourth rib plate 260, which has a third end 261 and a fourth end 262 arranged opposite to each other. The third end 261 is connected to the fourth wall surface 210 and is spaced apart from the first end 251 of the third rib plate 250 and located on a side of the first end 251 facing the first horizontal frame 100. The fourth end 262 is connected to the fifth wall surface 220 and is connected to the second end 252 of the third rib plate 250.

[0155] In the width direction (Y direction in FIG. 4) of the first longitudinal frame 200, the third end 261 of the fourth rib plate 260 is closer to the first horizontal frame 100 than the fourth end 262.

[0156] In this way, by connecting the third end 261 of the fourth rib plate 260 to the fourth wall surface 210 and connecting the fourth end 262 of the fourth rib plate 260 to the fifth wall surface 220, the fourth rib plate 260 can improve the lateral extrusion resistance of the first longitudinal frame 200. By connecting the fourth rib plate 260 to the first lateral frame 100 relative to the third rib plate 250 and in combination with the use of the third rib plate 250 in the first longitudinal frame 200, the structural strength distribution of the first longitudinal frame 200 can be more uniform, and the overall structural strength of the first longitudinal frame 200 can be further improved.

[0157] Referring to FIG. 4, in some embodiments, the fourth rib plate 260 intersects the thickness direction of the first longitudinal frame 200 and forms a third acute angle (e.g., the angle γ in FIG. 4), and the angle of the third acute angle γ is greater than or equal to 30° and less than or equal to 40°.

[0158] In some embodiments, the angle of the third acute angle γ can be one of 30°, 31°, 33°, 35°, 37°, and 38°, or any value within the range of greater than or equal to 30° and less than or equal to 40°.

[0159] In this way, by connecting the third end 261 of the fourth rib plate 260 to the fourth wall surface 210 and connecting the fourth end 262 of the fourth rib plate 260 to the fifth wall surface 220, the fourth rib plate 260 can improve the lateral extrusion resistance of the first longitudinal frame 200. By connecting the fourth rib plate 260 to the first lateral frame 100 relative to the third rib plate 250 and in combination with the use of the third rib plate 250 in the first longitudinal frame 200, the structural strength distribution of the first longitudinal frame 200 can be more uniform, and the overall structural strength of the first longitudinal frame 200 can be further improved.

[0160] Referring to FIG. 4, in some embodiments, in the width direction of the fourth wall surface 210, the distance from the third end 261 of the fourth rib plate 260 to the connection of the fourth wall surface 210 to the first wall surface 130 is a third distance (e.g., L7 in FIG. 4), and the percentage of the third distance L7 to the width (e.g., L6 in FIG. 4) of the fourth wall surface 210 is greater than or equal to 10% and less than or equal to 20%.

[0161] Referring to FIG. 4, in some embodiments, the fourth distance L7 can be the distance between the surface of the third end 261 facing the first lateral frame 100 and the inner surface of the first wall surface 130 facing the second wall surface 140.

[0162] In some embodiments, the percentage of the third distance L7 to the width L6 of the fourth wall surface 210 can be one of 11%, 12%, 13%, 14%, 16%, 17%, and 19%, or any value within the range of greater than or equal to 10% and less than or equal to 20%.

[0163] In this way, by making the third distance greater than or equal to 10% and less than or equal to 20% of the width of the fourth wall surface 210, the fourth rib plate 260 can be made to be closer to one end of the third rib plate 250 relative to the first horizontal frame 100, the third rib plate 250 and the fourth rib plate 260 can be more evenly distributed on the first vertical frame 200, and thus the third rib plate 250 and the fourth rib plate 260 can more evenly strengthen the structure of the first vertical frame 200, and the layout rationality of the third rib plate 250 and the fourth rib plate 260 in the first vertical frame 200 can be improved.

[0164] Referring to FIG. 4, in some embodiments, the first vertical frame 200 can further include a sixth wall surface 230, one end of the sixth wall surface 230 being connected to the end of the fourth wall surface 210 away from the first horizontal frame 100, and the other end of the sixth wall surface 230 being connected to the end of the fifth wall surface 220 away from the first horizontal frame 100.

[0165] In this way, by providing the sixth wall surface 230 on the side of the first vertical frame 200 away from the first horizontal frame 100, the edge beam 11 can be used to connect with the upper cover of the battery tray 30.

[0166] Referring to FIG. 4, in some embodiments, the sixth wall surface 230 has a groove 231, and the opening of the groove 231 faces the outside of the first vertical frame 200. In this way, by providing the groove 231 on the sixth wall surface 230, the groove 231 can be filled with sealing material to achieve sealing between the sixth wall surface 230 and the upper cover, and the groove 231 can limit the sealing material to avoid movement of the sealing material causing sealing failure.

[0167] Referring to FIG. 4, in some embodiments, in the width direction (e.g., the Y direction in FIG. 4) of the sixth wall surface 230, the distance (e.g., L8 in FIG. 4) from the groove 231 to the fourth wall surface 210 is greater than or equal to 15 mm and less than or equal to 20 mm. For example, the distance L8 from the groove 231 to the fourth wall surface 210 can be one of 15 mm, 16 mm, 17 mm, 117.5 mm, 18 mm, 19 mm, and 20 mm, or any point value within the range greater than or equal to 15 mm and less than or equal to 20 mm.

[0168] In a specific implementation, the distance L8 from the groove 231 to the fourth wall surface 210 can be the distance between the outer side wall of the groove 231 facing the fourth wall surface 210 and the fourth wall surface 210 in the thickness direction (e.g., the X direction in FIG. 4) of the first vertical frame 200.

[0169] In the width direction of the sixth wall surface 230, by making the distance from the groove 231 to the fourth wall surface 210 greater than or equal to 15 mm and less than or equal to 20 mm, the area between the fourth wall surface 210 and the upper cover can be reduced, and the sixth wall surface 230 can be connected to the upper cover in this area by using a connecting piece.

[0170] Referring to FIG. 4, in some embodiments, the width of the groove 231 (as L9 in FIG. 4) is greater than or equal to 5 mm. For example, the width L9 of the groove 231 can be 6 mm, 7 mm, 8 mm, or 10 mm.

[0171] In this way, by making the width of the groove 231 greater than or equal to 5 mm, the sealing material arranged in the groove 231 can have a larger contact area with the upper cover, thereby improving the sealing effect between the sixth wall surface 230 and the upper cover.

[0172] The depth of the groove 231 (as h2 in FIG. 4) is greater than or equal to 1 mm. For example, the depth h2 of the groove 231 can be 2 mm, 3 mm, 4 mm, or 6 mm.

[0173] In this way, by making the depth of the groove 231 greater than or equal to 1 mm, the groove 231 can effectively limit the sealing material, and avoid that the groove 231 is too shallow to effectively limit the sealing material.

[0174] In some examples, the sealing material can be a structural adhesive for sealing.

[0175] Referring to FIG. 4, in some embodiments, the first longitudinal frame 200 can further include a seventh wall surface 240, one end of the seventh wall surface 240 being connected to the end of the second wall surface 140 of the first transverse frame 100 away from the first end portion 110, and the other end of the seventh wall surface 240 being connected to the fifth wall surface 220. The seventh wall surface 240 can be used for welding connection with the bottom frame 20 of the battery tray 30.

[0176] In some embodiments, the wall thickness of the seventh wall surface 240 (as h3 in FIG. 4) is greater than or equal to 5 mm and less than or equal to 10 mm. For example, the thickness h3 of the seventh wall surface 240 can be one of 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, and 10 mm, or any value within the range of greater than or equal to 5 mm and less than or equal to 10 mm.

[0177] In this way, by arranging the seventh wall surface 240 of the first longitudinal frame 200 at the other end of the first longitudinal frame 200 opposite to the sixth wall surface 230, and connecting the seventh wall surface 240 to the second wall surface 140, the seventh wall surface 240 can be used as a welding surface and be used for welding connection with the bottom frame 20 of the battery tray 30, so as to connect the side beam 11 to the bottom frame 20 of the battery tray 30.

[0178] Further, by making the wall thickness of the seventh wall surface 240 greater than or equal to 5 mm and less than or equal to 10 mm, it is possible to avoid the seventh wall surface 240 being welded through due to the wall thickness of the seventh wall surface 240 being too thin, or the cost of the first longitudinal frame 200 and the edge beam 11 increasing due to the wall thickness of the seventh wall surface 240 being too large.

[0179] Referring to FIG. 4, in some embodiments, the width (as L10 in FIG. 4) of the seventh wall surface 240 is greater than or equal to 10 mm and less than or equal to 30 mm. For example, the width L10 of the seventh wall surface 240 can be one of 11 mm, 13 mm, 16 mm, 18 mm, 20 mm, 21 mm, and 26 mm, or any value within the range of greater than or equal to 10 mm and less than or equal to 30 mm.

[0180] In some embodiments, the width L10 of the seventh wall surface 240 can be the width of the outer wall surface of the seventh wall surface 240 facing away from the sixth wall surface 230.

[0181] In this way, by making the width of the seventh wall surface 240 greater than or equal to 10 mm and less than or equal to 30 mm, it is possible to ensure that the seventh wall surface 240 has a sufficient thick welding area with the bottom frame 20 of the battery tray 30, facilitating the implementation of the welding process, and avoiding the width of the seventh wall surface 240 being too wide, thereby reducing the manufacturing cost of the first longitudinal frame 200 and the manufacturing cost of the edge beam 11.

[0182] Referring to FIG. 4, in some embodiments, the edge beam 11 of the battery tray can further include a second longitudinal frame 400. One end of the second longitudinal frame 400 is arranged at the fourth wall surface 210, and the other end of the second longitudinal frame 400 extends away from the fourth wall surface 210, and the second longitudinal frame 400 is used to connect with the vehicle body. The second longitudinal frame 400 can be used to sealably connect with the vehicle body to achieve a battery-vehicle body integration solution.

[0183] Referring to FIG. 4, in some embodiments, the second longitudinal frame 400 can be connected to the first longitudinal frame 200 away from one side of the first transverse frame 100, and the second longitudinal frame 400 can be connected to the fourth wall surface 210 of the first longitudinal frame 200 away from the fifth wall surface 220.

[0184] Referring to FIG. 4, in some embodiments, the second longitudinal frame 400 can include an eighth wall surface 410 and a ninth wall surface 420. One end of the eighth wall surface 410 is connected to the fourth wall surface 210 for connection with the vehicle body. One end of the ninth wall surface 420 is connected to the other end of the eighth wall surface 410 away from the sixth wall surface 230, and the other end of the ninth wall surface 420 is connected to the fourth wall surface 210. The connection point of the ninth wall surface 420 and the fourth wall surface 210 is arranged away from the connection point of the eighth wall surface 410 and the fourth wall surface 210 toward the first transverse frame 100.

[0185] The ninth wall surface 420 is arranged obliquely relative to the eighth wall surface 410, and an angle between a width extension direction of the ninth wall surface 420 and a width extension direction of the eighth wall surface 410 can be less than 90°, for example, one of 30°, 45° or 60°.

[0186] In a specific implementation, one end of the eighth wall surface 410 is connected to a connection between the fourth wall surface 210 and the sixth wall surface 230. One end of the ninth wall surface 420 is connected to the other end of the eighth wall surface 410 away from the sixth wall surface 230, and the other end is connected to the fourth wall surface 210 and connected to the first end 251 of the third rib plate 250.

[0187] In some embodiments, a side surface of the eighth wall surface 410 away from the first horizontal frame 100 can be provided with foam to be sealingly connected to the vehicle body through the surface.

[0188] By arranging the ninth wall surface 420 and connecting one end of the ninth wall surface 420 to the eighth wall surface 410 and the other end to the fourth wall surface 210, the ninth wall surface 420 can support the eighth wall surface 410 and improve the lateral extrusion resistance of the second longitudinal frame 400. By connecting the ninth wall surface 420 to the third rib plate 250 on the fourth wall surface 210, the force can be transmitted between the ninth wall surface 420 and the third rib plate 250, and the third rib plate 250 can strengthen and support the lateral extrusion resistance of the ninth wall surface 420.

[0189] Referring to FIG. 4, in some embodiments, the width (such as L11 in FIG. 4) of the eighth wall surface 410 can be greater than or equal to 10 mm and less than or equal to 30 mm. For example, the width L11 of the eighth wall surface 410 can be one of 13 mm, 15 mm, 18 mm, 22 mm, 26 mm and 29 mm, or any point value in the range of greater than or equal to 10 mm and less than or equal to 30 mm.

[0190] In a specific implementation, the width L11 of the eighth wall surface 410 can be the distance from the end of the eighth wall surface 410 away from the fourth wall surface 210 to the outer surface of the fourth wall surface 210 in the thickness direction (such as the X direction in FIG. 4) of the first longitudinal frame.

[0191] On the basis of the above embodiment, the thickness of each wall surface and each rib plate on the side beam 11 can be greater than or equal to 2 mm and less than or equal to 4 mm, except for the seventh wall surface 240 and the wall thickness between the first connecting point and the second end portion 120 on the second wall surface 140. For example, the thickness of the first wall surface 130, the third wall surface 310, the fourth wall surface 210, the fifth wall surface 220, the sixth wall surface 230, the eighth wall surface 410, and the ninth wall surface 420 can be greater than or equal to 2 mm and less than or equal to 4 mm. For example, it can be one of 2 mm, 2.3 mm, 2.5 mm, 2.8 mm, 3.1 mm, 3.4 mm, 3.5 mm, and 3.7 mm, or any value within the range of greater than or equal to 2 mm and less than or equal to 4 mm.

[0192] On the basis of the above embodiment, if the side beam 11 has the first rib plate 150, the second rib plate 160, the third rib plate 250, and the fourth rib plate 260, and the wall surfaces of the first horizontal frame 100 and the first vertical frame 200 are not missing, the lower limit of the first-order main mode is controlled to be 70 Hz, and the upper limit of the damage value of each part is controlled to be 0.01 under the condition of random vibration for 21 hours under the relevant road spectrum, and the lower limit of the lateral extrusion resistance is controlled to be 110 KN.

[0193] If only the first rib plate 150 is cancelled, the first-order main mode of the side beam 11 is reduced to 67.3 Hz, and the lateral extrusion resistance of the side beam 11 is reduced to 95 KN. The damage value of the key component cell shell under the random vibration condition increases to 0.2, and the damage value of the tray bottom frame 20 weld increases significantly to 0.6.

[0194] If only the second rib plate 160 is cancelled, the first-order main mode of the side beam 11 is reduced to 65.3 Hz, and the lateral extrusion resistance of the side beam 11 is reduced to 97 KN. The damage value of the key component cell shell under the random vibration condition increases to 0.1.

[0195] If only the second wall segment 142 connected to the second rib plate 160 on the second wall surface 140 is cancelled, the first-order main mode of the side beam 11 is reduced to 67.0 Hz, and the lateral extrusion resistance of the side beam 11 is reduced to 88 KN. The damage value of the key component cell shell under the random vibration condition increases to 0.2.

[0196] If only the third rib plate 250 is cancelled, the first-order main mode of the side beam 11 is reduced to 69.2 Hz, and the lateral extrusion resistance of the side beam 11 is reduced to 108 KN.

[0197] If only the fourth rib plate 260 is cancelled, the first-order main mode of the side beam 11 is reduced to 68.2 Hz, and the lateral extrusion resistance of the side beam 11 is reduced to 102 KN.

[0198] On the basis of the above-mentioned embodiments, in combination with the stress nephogram of the simulation of the side beam 11 in FIG. 5, it can be known that the closer to the first rib plate 150, the second rib plate 160 and the second wall section 142, the brighter the color of the nephogram, and the three positions supply greater to the first-order main mode of the overall structure of the side beam 11.

[0199] Therefore, the influence of the first rib plate 150 and the second rib plate 160 on the first-order main mode of the side beam 11 is greater than the influence of the third rib plate 250 and the fourth rib plate 260 on the first-order main mode of the side beam 11.

[0200] By setting the first rib plate 150, the second rib plate 160 and the second wall section 142 at the corresponding positions, the first-order main mode of the side beam 11 can be ensured, and the structural strength of the side beam 11 can be improved. By further setting the third rib plate 250 and the fourth rib plate 260 in the first longitudinal frame 200, the structural strength of the side beam 11 can be further improved.

[0201] Referring to FIG. 6, the embodiments of the present application further provide a battery system 50, which can include the battery 40 and the battery tray 30 above.

[0202] The embodiments of the present application further provide a battery system 50, which can improve the use safety of the battery 40 and reduce the probability of damage of the battery 40 caused by external collision and extrusion by using the battery tray 30 described above to support the battery 40.

[0203] Referring to FIG. 7, the embodiments of the present application further provide a power utilization device 60, which can include the power utilization apparatus 70 and the battery system 50 described above, and the battery system 50 is used to provide power for the power utilization apparatus 70.

[0204] The embodiments of the present application further provide a power utilization device 60, which can improve the safety during use of the power utilization device 60 and improve the user experience by using the battery system 50 described above to supply power for the power utilization apparatus 70.

[0205] The power utilization device can be a vehicle or a power storage device, and the vehicle can be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range extended electric vehicle (REEV), a hybrid electric vehicle (HEV) or a fuel cell electric vehicle, and the vehicle can also be any vehicle with a battery.

[0206] The electric device can be an electric motor or an electric control device, such as a vehicle-mounted device or an air conditioner component.

[0207] The terms "upper", "lower", and the like are used for describing the relative positions of the structures in the drawings, and are merely for the convenience of description, and do not limit the scope of the application. Changes or adjustments of the relative positions, without substantial changes in the technical content, are also considered as the scope of the application.

[0208] It should be noted that, in the present application, unless otherwise specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact or indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0209] In addition, in the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be direct connection, or indirect connection through an intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0210] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0211] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A side beam (11) of a battery tray, characterized in that, The utility model relates to a battery tray's edge beam (11) and battery tray, including: First cross frame (100), in the width direction of first cross frame (100), first cross frame (100) has oppositely arranged first end (110) and second end (120), in the thickness direction of first cross frame (100), first cross frame (100) has oppositely arranged first wall surface (130) and second wall surface (140), first cross frame (100) has spaced first web plate (150) and second web plate (160) in it; One end of first web plate (150) is connected with first wall surface (130), the other end is connected with second wall surface (140), and first web plate (150) and first wall surface (130) form first acute angle; One end of second web plate (160) is connected with first wall surface (130) near one end of second end (120), and the other end is connected with second wall surface (140); First longitudinal frame (200) is connected with second end (120) of first cross frame (100), and the width extension direction of first longitudinal frame (200) is perpendicular to the width extension direction of first cross frame (100).

2. The edge beam (11) of a battery tray according to claim 1, characterized in that The angle of the first acute angle is greater than or equal to 50° and less than or equal to 70°.

3. The edge beam (11) of a battery tray according to claim 1, characterized in that The one end of the first web plate (150) towards the second wall surface (140) is closer to the second end (120) of the first cross frame (100) than the other end of the first web plate (150) towards the first wall surface (130).

4. The battery tray's edge beam (11) according to claim 1, characterized in that The second wall surface (140) comprises: A first wall segment (141) is arranged near the first end (110), and one end of the first web plate (150) is connected to the first wall segment (141); A second wall segment (142) is connected to the end of the first wall segment (141) away from the first end (110), and one end of the second web plate (160) away from the first wall surface (130) is connected to the second wall segment (142).

5. A cell tray's rim (11) according to claim 4, characterized in that, In the width direction of the first cross frame (100), the distance from the connection between the first web plate (150) and the first wall surface (130) to the first end (110) is a first distance, the distance from the connection between the first wall segment (141) and the first web plate (150) to the first end (110) is a second distance, and the first distance accounts for more than or equal to 65% and less than or equal to 75% of the second distance.

6. The edge beam (11) of a battery tray according to claim 4, characterized in that The first wall segment (141) comprises: A first straight segment (1411) to which the first web plate (150) is connected; A second straight segment (1412) connected at one end to the end of the first straight segment (1411) away from the first end (110) and extending away from the first wall surface (130) and connected at the other end to the end of the second wall segment (142) away from the second end (120); The extending direction of the second straight segment (1412) intersects with the extending direction of the first straight segment (1411).

7. The edge beam (11) of a battery tray according to claim 6, characterized in that The distance from the connection between the first rib plate (150) and the first wall surface (130) to the first end portion (110) along the width direction of the first cross frame (100) is a first distance, and the percentage of the first distance to the width of the first straight segment (1411) is greater than or equal to 65% and less than or equal to 75%.

8. The edge beam (11) of a battery tray according to claim 6, characterized in that The width of the first straight segment (1411) along the width direction of the first cross frame (100) is greater than or equal to 50 mm and less than or equal to 60 mm.

9. A rim (11) of a battery tray according to any one of claims 4-8, characterized in that, The connection between the second rib plate (160) and the second wall surface (140) is a first connection point; The wall thickness between the first connection point and the second end portion (120) on the second wall surface (140) is greater than the wall thickness between the first connection point and the first end portion (110).

10. A cell tray's rim (11) according to claim 9, characterized in that, The first connection point is located in the middle of the second wall segment (142).

11. A cell tray's rim (11) according to claim 9, characterized in that, The wall thickness between the first connection point and the second end portion (120) on the second wall surface (140) is greater than or equal to 5 mm and less than or equal to 10 mm.

12. The cell tray's rim (11) according to any of claims 1 - 11, characterized in that, A second cross frame (300) is further included, which is arranged on the side of the second wall surface (140) away from the first wall surface (130), and is arranged close to the second end portion (120).

13. The edge beam (11) of a battery tray according to claim 12, characterized in that In the thickness direction of the first cross frame (100), the second cross frame (300) has a third wall surface (310) arranged opposite to the second wall surface (140); The width of the third wall surface (310) is greater than or equal to 10 mm and less than or equal to 20 mm; The wall thickness of the third wall surface (310) is greater than or equal to 2 mm and less than or equal to 4 mm.

14. The cell tray's rim (11) according to any one of claims 1-11, characterized in that, The wall thickness of the first wall surface (130) is greater than or equal to 2 mm and less than or equal to 4 mm; The wall thickness of the second wall surface (140) is greater than or equal to 2 mm and less than or equal to 4 mm.

15. The edge beam (11) of a battery tray according to any one of claims 1-8, characterized in that, The first longitudinal frame (200) has a third rib plate (250) therein; In the thickness direction of the first longitudinal frame (200), the first longitudinal frame (200) includes a fourth wall surface (210) and a fifth wall surface (220) arranged opposite to each other, one end of the fourth wall surface (210) being connected to one end of the first wall surface (130) close to the second end portion (120); The third rib plate (250) includes a first end (251) and a second end (252) arranged opposite to each other, the first end (251) being connected to the fourth wall surface (210), the second end (252) being connected to the fifth wall surface (220), and the second end (252) being closer to the first cross frame (100) than the first end (251).

16. A cell tray's rim (11) according to claim 15, characterized in that, The third rib plate (250) intersects with the thickness direction of the first longitudinal frame (200) and forms a second acute angle; The angle of the second acute angle is greater than or equal to 15° and less than or equal to 30°.

17. The cell tray's rim (11) according to claim 15, characterized in that, The first end (251) of the third rib plate (250) is spaced apart from the second end (120) of the first transverse frame (100) by a second distance in the width direction of the fourth wall surface (210); The second distance accounts for 20% to 30% of the width of the fourth wall surface (210).

18. The cell tray's rim (11) according to claim 15, characterized in that, The first longitudinal frame (200) further comprises a fourth rib plate (260); The fourth rib plate (260) has a third end (261) and a fourth end (262) oppositely arranged; The third end (261) is connected to the fourth wall surface (210), and the third end (261) is spaced apart from the first end (251) of the third rib plate (250) and located on the side of the first end (251) facing the first transverse frame (100); The fourth end (262) is connected to the fifth wall surface (220) and is connected to the second end (252) of the third rib plate (250).

19. A cell tray's rim (11) according to claim 18, characterized in that, The fourth rib plate (260) intersects the thickness direction of the first longitudinal frame (200) and forms a third acute angle; The third acute angle is greater than or equal to 30° and less than or equal to 40°.

20. The cell tray's rim (11) according to claim 18, characterized in that, The third end (261) is spaced apart from the connection between the fourth wall surface (210) and the first wall surface (130) by a third distance in the width direction of the fourth wall surface (210); The third distance accounts for 10% to 20% of the width of the fourth wall surface (210).

21. The cell tray's rim (11) according to any of claims 15-20, characterized in that, The first longitudinal frame (200) further comprises a sixth wall surface (230); One end of the sixth wall surface (230) is connected to the end of the fourth wall surface (210) away from the first transverse frame (100), and the other end of the sixth wall surface (230) is connected to the end of the fifth wall surface (220) away from the first transverse frame (100); The sixth wall surface (230) has a groove (231) with an opening facing the outside of the first longitudinal frame (200).

22. A cell tray's rim (11) according to claim 21, characterized in that, The distance between the groove (231) and the fourth wall surface (210) is greater than or equal to 15mm and less than or equal to 20mm in the width direction of the sixth wall surface (230).

23. The cell tray's rim (11) according to claim 21, characterized in that, The width of the groove (231) is greater than or equal to 5mm; And / or, the depth of the groove (231) is greater than or equal to 1mm.

24. The cell tray's rim (11) according to claim 21, characterized in that, The first longitudinal frame (200) further comprises a seventh wall surface (240); One end of the seventh wall surface (240) is connected to the end of the second wall surface (140) away from the first end (110), and the other end of the seventh wall surface (240) is connected to the fifth wall surface (220).

25. A cell tray's rim (11) according to claim 24, characterized in that, The width of the seventh wall surface (240) is greater than or equal to 10mm and less than or equal to 30mm And / or, the wall thickness of the seventh wall surface (240) is greater than or equal to 5mm and less than or equal to 10mm; And / or, the wall thickness of the fourth wall surface (210) is greater than or equal to 2mm and less than or equal to 4mm; And / or, the wall thickness of the fifth wall surface (220) is greater than or equal to 2 mm and less than or equal to 4 mm. And / or, the wall thickness of the sixth wall surface (230) is greater than or equal to 2 mm and less than or equal to 4 mm.

26. The cell tray's rim (11) according to claim 21, characterized in that, The second longitudinal frame (400) is further included; One end of the second longitudinal frame (400) is arranged on the fourth wall surface (210), and the other end of the second longitudinal frame (400) extends away from the fourth wall surface (210), and the second longitudinal frame is used to connect with the vehicle body.

27. A cell tray's rim (11) according to claim 26, characterized in that, The second longitudinal frame (400) includes: An eighth wall surface (410) connected to one end of the fourth wall surface (210) for connecting with the vehicle body; A ninth wall surface (420) connected to one end of the eighth wall surface (410) away from the other end of the sixth wall surface (230), and connected to the fourth wall surface (210) at the other end; The connecting point of the ninth wall surface (420) and the fourth wall surface (210) is arranged on the side of the eighth wall surface (410) and the fourth wall surface (210) towards the first horizontal frame (100).

28. A cell tray's rim (11) according to claim 27, characterized in that, One end of the ninth wall surface (420) is connected to the first end (251) of the third rib plate (250).

29. A cell tray's rim (11) according to claim 27, characterized in that, The wall thickness of the eighth wall surface (410) is greater than or equal to 2 mm and less than or equal to 4 mm. And / or, the wall thickness of the ninth wall surface (420) is greater than or equal to 2 mm and less than or equal to 4 mm. And / or, the width of the eighth wall surface (410) is greater than or equal to 15 mm and less than or equal to 30 mm.

30. A battery tray (30) characterized by, The side frame (10) includes at least part of the edge beam (11) of the battery tray according to any one of claims 1 to 29. The first horizontal frame (100) of the edge beam (11) is connected to the bottom frame (20).

31. A battery system (50) characterized by: The battery system (50) according to claim 31 is used to provide electric energy for the electric device (70).

32. An electrical device (60) characterized by: The battery system (50) according to claim 31 is used to provide electric energy for the electric device (70).

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