Edge beam of battery tray, battery tray, battery system and electric equipment

Abstract

The invention provides an edge beam of a battery tray, the battery tray, a battery system and electric equipment, and relates to the technical field of batteries, one end of a first rib plate is connected with a first wall surface, the other end of the first rib plate is connected with a second wall surface, a first acute angle is formed between the first rib plate and the first wall surface, and one end of a second rib plate is connected with one end, close to a second end part, of the first wall surface; the first longitudinal frame is connected with the second end of the first transverse frame, and the width extending direction of the first longitudinal frame is perpendicular to the width extending direction of the first transverse frame. According to the edge beam provided by the embodiment of the invention, on the basis of ensuring the structural strength of the edge beam, the number of rib positions in the edge beam is reduced, and the manufacturing cost and weight of the edge beam are reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a side beam of a battery tray, a battery tray, a battery system, and electrical equipment. Background Art

[0002] The battery tray can support and protect the batteries in the battery system and install the batteries on the electrical equipment through the battery tray.

[0003] A battery tray generally consists of a bottom structure and side beams. The side beams of the battery tray can withstand lateral compression and protect the sides of the battery to reduce damage. To increase the strength of the side beams, ribs are installed inside the side beams.

[0004] However, the side beams in the above-mentioned related art have more ribs, which increases the manufacturing cost and weight of the side beams, and also increases the manufacturing cost and weight of the battery system and electrical equipment. Summary of the Invention

[0005] The embodiments of the present application provide a side beam of a battery tray, a battery tray, a battery system and an electrical equipment, which are used to solve the technical problem in the above-mentioned related technologies that there are too many ribs in the side beam, which leads to an increase in the manufacturing cost and weight of the side beam, and also leads to an increase in the manufacturing cost and weight of the battery system and the electrical equipment.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a side beam of a battery tray, comprising:

[0008] a first transverse frame, wherein the first transverse frame has a first end and a second end opposite to each other in a width direction of the first transverse frame, and a first wall surface and a second wall surface opposite to each other in a thickness direction of the first transverse frame, and a first rib plate and a second rib plate spaced apart from each other in the first transverse frame;

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

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

[0011] The first vertical frame is connected to the second end of the first transverse frame, and the width extension direction of the first vertical frame is perpendicular to the width extension direction of the first transverse frame.

[0012] An embodiment of the present application provides a side beam of a battery tray, wherein the side beam is formed by arranging a first rib plate and a second rib plate inside a first transverse frame, and connecting one end of the first rib plate to the first wall surface of the first transverse frame, and the other end to the first wall surface opposite to the second wall surface, the first rib plate is close to the first end portion of the first transverse frame relative to 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 anti-extrusion ability of the first transverse frame near the first end portion, and can also improve the first-order main mode of the first transverse frame near the first end portion in the thickness direction of the first transverse frame.

[0013] Furthermore, by connecting one end of the second rib plate to one end of the first wall surface close to the second end portion and the other end to the second wall surface, so that the second rib plate is close to the second end portion of the first transverse frame relative to the first rib plate, the second rib plate can improve the transverse compression resistance of the first transverse frame close to the second end portion, as well as the first-order main mode in the thickness direction of the first transverse frame, thereby ensuring the structural strength of the side beam while using fewer rib plates, thereby reducing the manufacturing cost and weight of the side beam.

[0014] Based on the above technical solution, this application can also be improved as follows.

[0015] In a possible implementation, the angle of the first acute angle is greater than or equal to 50° and less than or equal to 70°.

[0016] By limiting the first acute angle to a range of 50° or greater and 70° or less, it is possible to avoid situations where a too small first acute angle would reduce the component of the first rib in the thickness direction of the first transverse frame, thereby reducing the first-order principal mode of the first transverse frame in the thickness direction. It is also possible to avoid problems where an excessively large first acute angle would reduce the first transverse frame's ability to resist lateral extrusion.

[0017] In a possible implementation, one end of the first rib facing the second wall is closer to the second end portion of the first transverse frame than the other end of the first rib facing the first wall.

[0018] In a possible implementation, the second wall includes:

[0019] The first wall section is arranged close to the first end portion, and one end of the first rib is connected to the first wall section.

[0020] The second wall segment is connected to the end of the first wall segment facing away from the first end portion, and the end of the second rib facing away from the first wall surface is connected to the second wall segment.

[0021] In a possible implementation, along the width direction of the first transverse frame, the distance from the connection between the first rib and the first wall surface to the first end portion is a first distance, the distance from the connection between the first wall segment (141) and the first rib (150) to the first end portion (110) is a second distance, and the percentage of the first distance to the second distance is greater than or equal to 65% and less than or equal to 75%.

[0022] In this way, it is possible to avoid the first-order main mode of the first transverse frame in the thickness direction from decreasing when the percentage of the first distance to the second distance exceeds the range of greater than or equal to 65% and less than or equal to 75%, thereby avoiding the increase in excitation of the resonance point on the first transverse frame due to the decrease of one section mode, and avoiding the increase in the force acting on the pallet, thereby reducing the chance of damage to the pallet.

[0023] In a possible implementation, the first wall segment includes:

[0024] a first straight line segment, the first rib being connected to the first straight line segment;

[0025] a second straight line segment, one end of which is connected to the end of the first straight line segment facing away from the first end portion, and the other end of which extends away from the first wall surface and is connected to the end of the second wall segment facing away from the second end portion;

[0026] An extending direction of the second straight line segment intersects with an extending direction of the first straight line segment.

[0027] In this way, by making the extension direction of the second straight line segment intersect with the extension direction of the first straight line segment, the ability of the first horizontal frame to resist lateral impact can be improved through the second straight line segment, and the first-order main mode of the second horizontal frame in the thickness direction can be improved, further improving the strength of the first horizontal frame and the strength of the frame of the battery tray.

[0028] In one possible implementation, along the width direction of the first horizontal frame, the distance from the connection between the first rib and the first wall surface to the first end is a first distance, and the percentage of the first distance to the width of the first straight line segment is greater than or equal to 65% and less than or equal to 75%.

[0029] In this way, it is possible to avoid the first-order main mode of the first transverse frame in the thickness direction from decreasing when the percentage of the first distance to the width of the first straight line segment exceeds the range greater than or equal to 65% and less than or equal to 75%, thereby avoiding the increase in excitation of the resonance point on the first transverse frame due to the decrease of one section mode, and avoiding the increase in the force acting on the pallet, thereby reducing the chance of damage to the pallet.

[0030] In a possible implementation, along the width direction of the first transverse frame, the width of the first straight line segment is greater than or equal to 50 mm and less than or equal to 60 mm.

[0031] In this way, by making the width of the first straight line segment greater than or equal to 50 mm and less than or equal to 60 mm, while ensuring the lateral extrusion resistance of the first horizontal frame and a better first-order main mode, it is possible to avoid the width of the first straight line segment being too large, which in turn avoids the increase in the manufacturing cost of the first horizontal frame due to the excessive width of the first horizontal frame, and can reduce the manufacturing cost of the battery tray.

[0032] In a possible implementation, a connection point between the second rib and the second wall is a first connection point;

[0033] On the second wall surface, a wall thickness between the first connection point and the second end portion is greater than a wall thickness between the first connection point and the first end portion.

[0034] This improves the structural strength of the wall portion between the first connection point and the second end, thereby increasing the transverse extrusion resistance of the wall portion, thereby improving the transverse extrusion resistance of the first transverse frame and increasing the first-order principal mode of the wall portion. When the structure portion is welded to another structure, increasing the wall thickness of the structure portion can also improve the weldability between the structure portion and the other structure.

[0035] In a possible implementation manner, the first connection point is located in the middle of the second wall segment.

[0036] In a possible implementation, a wall thickness between the first connection point and the second end portion on the second wall surface is greater than or equal to 5 mm and less than or equal to 10 mm.

[0037] In this way, the structural strength of the second wall surface in this portion can be ensured, and the wall thickness of this portion of the wall surface can be avoided to be too large, which would lead to an increase in the manufacturing cost of the first transverse frame and an increase in the cost of the side beam.

[0038] In a possible implementation, a second transverse frame is further included. The second transverse frame is arranged on a side of the second wall surface facing away from the first wall surface, and the second transverse frame is arranged close to the second end portion.

[0039] In this way, by providing the second transverse frame, the second transverse frame can be used to connect the battery protection plate of the battery tray, thereby improving the practicality of the side beam.

[0040] In a possible implementation, in a thickness direction of the first transverse frame, the second transverse frame has a third wall surface arranged opposite to the second wall surface;

[0041] The width of the third wall is greater than or equal to 10 mm and less than or equal to 20 mm;

[0042] The thickness of the third wall is greater than or equal to 2 mm and less than or equal to 4 mm.

[0043] In this way, by making the width of the third wall greater than or equal to 10 mm and less than or equal to 20 mm, it can be ensured that the third wall and the battery protection plate of the battery tray have sufficient connection area to ensure the connection stability between the third wall and the battery tray, and it can also avoid the third wall being too wide, which will increase the manufacturing cost of the second cross frame, thereby reducing the manufacturing cost of the side beam.

[0044] In a possible implementation, the thickness of the first wall surface is greater than or equal to 2 mm and less than or equal to 4 mm;

[0045] And / or, the wall thickness of the second wall is greater than or equal to 2 mm and less than or equal to 4 mm.

[0046] In a possible implementation, a third rib is provided in the first longitudinal frame;

[0047] In the thickness direction of the first longitudinal frame, the first longitudinal frame includes a fourth wall surface and a fifth wall surface that are opposite to each other, and one end of the fourth wall surface is connected to one end of the first wall surface close to the second end portion;

[0048] The third rib includes a first end and a second end that are oppositely disposed, the first end being connected to the fourth wall surface, the second end being connected to the fifth wall surface, and the second end being closer to the first transverse frame relative to the first end.

[0049] In this way, by arranging a third rib in the first longitudinal frame, connecting one end of the third rib to the fourth wall of the first longitudinal frame, and connecting the other end of the third rib to the fifth wall of the first longitudinal frame, the lateral anti-extrusion ability of the first longitudinal frame can be improved, thereby improving the lateral anti-extrusion ability of the side beam of the battery tray.

[0050] In a possible implementation, the third rib intersects with the thickness direction of the first longitudinal frame and forms a second acute angle;

[0051] Furthermore, the angle of the second acute angle is greater than or equal to 15° and less than or equal to 30°.

[0052] In this way, by making the third rib intersect with the fourth wall so that the second acute angle is greater than or equal to 15° and less than or equal to 30°, the third rib can not only improve the lateral anti-extrusion ability of the first longitudinal frame, but also improve the first-order main mode of the first longitudinal frame, thereby enriching the function of the third rib.

[0053] Furthermore, by making the second acute angle greater than or equal to 15° and less than or equal to 30°, the third rib can be used to improve the lateral anti-compression capability of the first longitudinal frame while ensuring that the first-order main mode of the first longitudinal frame can be improved.

[0054] In a possible implementation, in the width direction of the fourth wall, a distance from the first end of the third rib to the second end of the fourth wall facing away from the first transverse frame is a second distance;

[0055] The percentage of the second distance to the width of the fourth wall is greater than or equal to 20% and less than or equal to 30%.

[0056] In this way, since the end of the first longitudinal frame is facing away from the first transverse frame, the lateral extrusion force exerted on the first longitudinal frame cannot be shared by the first transverse frame. By making the second distance account for a percentage greater than or equal to 20% and less than or equal to 30% of the width of the fourth wall, the third rib can be placed close to the side of the first longitudinal frame facing away from the first transverse frame, so that the third rib can improve the lateral anti-extrusion ability of the part of the first longitudinal frame facing away from the first transverse frame.

[0057] In a possible implementation, a fourth rib is further provided in the first longitudinal frame;

[0058] The fourth rib has a third end and a fourth end that are oppositely disposed;

[0059] The third end is connected to the fourth wall surface, the third end is spaced apart from the first end of the third rib, and is located on a side of the first end facing the first transverse frame;

[0060] The fourth end is connected to the fifth wall surface and connected to the second end of the third rib.

[0061] Thus, by connecting the third end of the fourth rib to the fourth wall surface and the fourth end of the fourth rib to the fifth wall surface, the fourth rib can improve the first longitudinal frame's resistance to lateral extrusion. Furthermore, by positioning the fourth rib closer to the first transverse frame relative to the third rib, and combining this with the use of the third rib within the first longitudinal frame, the structural strength distribution on the first longitudinal frame can be made more uniform, further improving the overall structural strength of the first longitudinal frame.

[0062] In a possible implementation, the fourth rib intersects with the thickness direction of the first longitudinal frame and forms a third acute angle;

[0063] Furthermore, the angle of the third acute angle is greater than or equal to 30° and less than or equal to 40°.

[0064] In this way, by making the fourth rib intersect with the thickness direction of the first longitudinal frame and forming a third acute angle, the fourth rib can not only improve the lateral extrusion resistance of the first longitudinal frame, but also improve the first-order main mode of the first longitudinal frame, which helps to improve the comprehensive performance of the first longitudinal frame and can further improve the structural strength of the side beam of the battery tray.

[0065] In a possible implementation, in the width direction of the fourth wall, a distance from the third end to a connection point between the fourth wall and the first wall is a third distance;

[0066] The percentage of the third distance to the width of the fourth wall is greater than or equal to 10% and less than or equal to 20%.

[0067] In this way, by making the percentage of the third distance to the width of the fourth wall surface greater than or equal to 10% and less than or equal to 20%, the fourth rib can be made closer to the end where the first horizontal frame is located relative to the third rib, and the third and fourth ribs can be distributed more evenly on the first longitudinal frame, so that the third and fourth ribs can provide more uniform structural reinforcement to the first longitudinal frame, thereby improving the rationality of the layout of the third and fourth ribs in the first longitudinal frame.

[0068] In a possible implementation, the first vertical frame further includes a sixth wall surface;

[0069] One end of the sixth wall is connected to the end of the fourth wall facing away from the first transverse frame, and the other end of the sixth wall is connected to the end of the fifth wall facing away from the first transverse frame;

[0070] The sixth wall surface has a groove, and the notch of the groove faces the outside of the first longitudinal frame.

[0071] In this way, by providing the sixth wall surface on the side of the first longitudinal frame facing away from the first transverse frame, the side beam can be used to connect with the upper cover of the battery tray.

[0072] By setting a groove on the sixth wall, sealing material can be filled in the groove to achieve sealing between the sixth wall and the upper cover. Setting the groove can limit the sealing material to prevent the sealing material from moving and causing sealing failure.

[0073] In a possible implementation, in the width direction of the sixth wall, a distance from the groove to the fourth wall is greater than or equal to 15 mm and less than or equal to 20 mm.

[0074] In the width direction of the sixth wall, by making the distance from the groove to the fourth wall greater than or equal to 15 mm and less than or equal to 20 mm, the area between the fourth wall and the upper cover can be reduced and increased, making it easier to connect the sixth wall and the upper cover in this part of the area by using a connecting piece.

[0075] In a possible implementation, the width of the groove is greater than or equal to 5 mm;

[0076] And / or, the depth of the groove is greater than or equal to 1 mm.

[0077] Thus, by making the width of the groove greater than or equal to 5 mm, a larger contact area can be provided between the sealing material disposed in the groove and the upper cover, thereby improving the sealing effect between the sixth wall surface and the upper cover.

[0078] By making the depth of the groove greater than or equal to 1 mm, it is possible to ensure that the groove effectively limits the sealing material, thereby preventing the groove from being too shallow and thus failing to effectively limit the sealing material.

[0079] In a possible implementation, the first vertical frame further includes a seventh wall surface;

[0080] One end of the seventh wall is connected to an end of the second wall facing away from the first end portion, and the other end of the seventh wall is connected to the fifth wall.

[0081] In this way, by setting the seventh wall of the first longitudinal frame at the other end of the first longitudinal frame opposite to the sixth wall and connecting the seventh wall to the second wall, the seventh wall can be used as a welding surface and used for welding connection with the bottom frame of the battery tray, so as to facilitate the connection between the side beam and the bottom frame of the battery tray.

[0082] In a possible implementation, the width of the seventh wall is greater than or equal to 10 mm and less than or equal to 30 mm;

[0083] And / or, the thickness of the seventh wall is greater than or equal to 5 mm and less than or equal to 10 mm;

[0084] And / or, the thickness of the fourth wall is greater than or equal to 2 mm and less than or equal to 4 mm;

[0085] And / or, the thickness of the fifth wall is greater than or equal to 2 mm and less than or equal to 4 mm;

[0086] And / or, the wall thickness of the sixth wall is greater than or equal to 2 mm and less than or equal to 4 mm.

[0087] In this way, by making the width of the seventh wall greater than or equal to 10 mm and less than or equal to 30 mm, it can be ensured that there is a sufficiently thick welding area between the seventh wall and the bottom frame of the battery tray, which facilitates the implementation of the welding process and avoids the waste of materials caused by the width of the seventh wall being too wide, thereby reducing the manufacturing cost of the first longitudinal frame and the manufacturing cost of the side beam.

[0088] Furthermore, by making the wall thickness of the seventh wall surface greater than or equal to 5 mm and less than or equal to 10 mm, it is possible to avoid welding through the seventh wall surface due to the wall thickness being too thin, or increasing the cost of the first longitudinal frame and the side beam due to the wall thickness of the seventh wall being too large.

[0089] In a possible implementation, a second vertical frame is further included;

[0090] One end of the second longitudinal frame is disposed on the fourth wall surface, and the other end of the second longitudinal frame extends away from the fourth wall surface. The second longitudinal frame is used to be connected to the vehicle body.

[0091] In this way, by providing the second longitudinal frame, connection and sealing with the vehicle body can be achieved through the second longitudinal frame, so as to realize the battery-body integration solution.

[0092] In a possible implementation, the second vertical frame includes:

[0093] an eighth wall surface, one end of which is connected to the fourth wall surface and is used to connect to the vehicle body;

[0094] The ninth wall has one end connected to the other end of the eighth wall facing away from the sixth wall, and the other end connected to the fourth wall; the connection point between the ninth wall and the fourth wall is spaced apart from the connection point between the eighth wall and the fourth wall on the side facing the first horizontal frame.

[0095] In this way, by setting the ninth wall and connecting one end of the ninth wall to the eighth wall and the other end to the fourth wall, the ninth wall can support the eighth wall and improve the lateral anti-extrusion ability of the second longitudinal frame.

[0096] In a possible implementation, one end of the ninth wall surface is connected to the first end of the third rib.

[0097] In this way, by connecting the ninth wall surface and the third rib plate on the fourth wall surface, the force can be transmitted between the ninth wall surface and the third rib plate, and the lateral anti-extrusion ability of the ninth wall surface can be strengthened and supported by the third rib plate.

[0098] In a possible implementation, the eighth wall has a thickness greater than or equal to 2 mm and less than or equal to 4 mm;

[0099] And / or, the thickness of the ninth wall surface is greater than or equal to 2 mm and less than or equal to 4 mm;

[0100] And / or, the width of the eighth wall is greater than or equal to 15 mm and less than or equal to 30 mm.

[0101] A second aspect of an embodiment of the present application provides a battery tray, comprising a bottom frame and a side frame, wherein at least a portion of the side frame adopts the side beam of the battery tray as described above;

[0102] The first transverse frame of the side beam is connected to the bottom frame.

[0103] A third aspect of an embodiment of the present application provides a battery system, which includes a battery and the battery tray described above.

[0104] An embodiment of the present application provides a battery system. By using the above-mentioned battery tray to support batteries, the battery system can improve the safety of battery use and reduce the probability of the battery being damaged by external collision or compression.

[0105] A fourth aspect of an embodiment of the present application provides an electrical equipment, which includes an electrical device and the battery system as described above, wherein the battery system is used to provide electrical energy to the electrical device.

[0106] An embodiment of the present application provides an electric device, which uses the above-mentioned battery system to power an electric device, thereby improving the safety of the electric device during use and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0108] Figure 1 A schematic structural diagram of a side beam provided in an embodiment of the present application;

[0109] Figure 2 A schematic cross-sectional view of a side beam provided in an embodiment of the present application;

[0110] Figure 3 A schematic structural diagram of a battery tray provided in an embodiment of the present application;

[0111] Figure 4 A schematic structural diagram of another side beam provided in an embodiment of the present application;

[0112] Figure 5 for Figure 4 Stress cloud diagram of the simulated edge beam in .

[0113] Description of reference numerals:

[0114] 10-side frame; 20-bottom frame;

[0115] 11-side beam;

[0116] 100-first horizontal frame;

[0117] 110 - first end; 120 - second end; 130 - first wall; 140 - second wall;

[0118] 150-first rib; 160-second rib;

[0119] 141-first wall segment; 142-second wall segment;

[0120] 1411-first straight line segment; 1412-second straight line segment;

[0121] 200-first vertical frame;

[0122] 210 - fourth wall; 220 - fifth wall; 230 - sixth wall; 240 - seventh wall;

[0123] 250-third rib plate; 260-fourth rib plate;

[0124] 231 - groove; 251 - first end; 252 - second end; 261 - third end; 262 - fourth end;

[0125] 300-second horizontal frame;

[0126] 310-third wall;

[0127] 400-second vertical frame;

[0128] 410-eighth wall; 420-ninth wall. DETAILED DESCRIPTION

[0129] As described in the background art, the related art has a large number of ribs 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 electrical equipment.

[0130] refer to Figure 1 The reason for this problem is that the design of the ribs in the side frame is unreasonable. In order to improve the structural strength of the side frame, multiple ribs are set in the side frame to improve the structural strength of the side frame. This method of increasing the structural strength of the side frame by increasing the ribs will lead to an increase in the manufacturing cost and weight of the side beam, which will in turn lead to an increase in the manufacturing cost and weight of the battery system and electrical equipment.

[0131] In response to 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 electrical equipment. The side beam is formed by arranging a first rib and a second rib inside a first transverse frame, and one end of the first rib is connected to the first wall of the first transverse frame, and the other end is connected to the first wall opposite to the second wall. The first rib is close to the first end of the first transverse frame relative to the second rib, and a first acute angle is formed between the first rib and the first wall, so that the first rib can improve the lateral anti-extrusion ability of the first transverse frame near the first end, and can also improve the first-order main mode of the first transverse frame near the first end in the thickness direction of the first transverse frame.

[0132] Furthermore, by connecting one end of the second rib plate to one end of the first wall surface close to the second end portion and the other end to the second wall surface, so that the second rib plate is close to the second end portion of the first transverse frame relative to the first rib plate, the second rib plate can improve the transverse compression resistance of the first transverse frame close to the second end portion, as well as the first-order main mode in the thickness direction of the first transverse frame, thereby ensuring the structural strength of the side beam while using fewer rib plates, thereby reducing the manufacturing cost and weight of the side beam.

[0133] 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 in conjunction with 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 of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0134] refer to Figure 1 and Figure 2 An embodiment of the present application provides a side beam 11 of a battery tray. The side beam 11 may include a first transverse frame 100 and a second longitudinal frame 200.

[0135] In some embodiments, the first vertical frame 200 and the first horizontal frame 100 may be an integrated structure. The first vertical frame 200 and the first horizontal frame 100 may both be metal frame structures.

[0136] It is understandable that the structural strength of the side beam 11 of the battery tray can generally be measured by the lateral compression resistance and the first-order main mode.

[0137] Among them, the transverse direction of the transverse extrusion resistance can be as follows Figure 2 In the X direction, during specific implementation, the battery tray is susceptible to lateral extrusion exerted on the side beam 11 by the external environment.

[0138] Among them, the first-order main mode can be the side beam 11 in the height direction (such as Figure 2When the first-order main mode changes in the Y direction (in the Y direction), a low first-order main mode will lead to increased excitation of the resonance point on the side beam 11, which in turn increases the forces acting on the side beam 11 and the battery tray, easily causing damage to the tray, such as deformation and cracking. When the side beam 11 includes a first transverse frame 100 and a first longitudinal frame 200, the first-order main mode of the first transverse frame 100 in the Y direction and the first-order main mode of the first longitudinal frame 200 in the Y direction will both affect the changes in the first-order main mode of the side beam 11 in the Y direction.

[0139] refer to Figure 2 , in the width direction of the first horizontal frame 100 (such as Figure 2 In the X direction), the first transverse frame 100 has a first end 110 and a second end 120 that are oppositely arranged.

[0140] It should be noted that Figure 2 The dotted line in the figure is for the purpose of indicating the specific position of the second end portion 120 , and does not mean that there is a connection trace or connection structure between the second end portion 120 on the actual side beam 11 and the first longitudinal frame 200 .

[0141] In the thickness direction of the first transverse frame 100 (eg Figure 2 In the Y direction (in the middle Y direction), the first transverse frame 100 has a first wall surface 130 and a second wall surface 140 that are oppositely disposed. A first rib 150 and a second rib 160 are spaced apart within the first transverse frame 100. The first rib 150 is closer to the first end 110 than the second rib 160, and the second rib 160 is closer to the second end 120 than the first rib 150.

[0142] It can be understood that the second end portion 120 may be a connection between an end of the first wall 130 facing away from the first end portion 110 and the first longitudinal frame 200 .

[0143] In some embodiments, the first wall 130 and the second wall 140 can be parallel, and the widths of the first wall 130 and the second wall 140 can be approximately equal.

[0144] One end of the first rib 150 is connected to the first wall 130, and the other end is connected to the second wall 140, forming a first acute angle between the first rib 150 and the first wall 130. The end of the first rib 150 connected to the first wall 130 can be closer to the first end 110 of the first transverse frame 100 than the end of the first rib 150 connected to the second wall 140.

[0145] In some embodiments, the side of the second wall 140 facing away from the first wall 130 can be used to mount a lifting lug (not shown). The end of the first rib 150 facing the second wall 140 is closer to the second end 120 of the first transverse frame 100 than the end of the first rib 150 facing the first wall 130. This allows the first rib 150 to provide a more uniform support force on the second wall 140.

[0146] In this way, the first rib 150 can play the role of transferring the weight of the battery to the lifting ear. When transferring the weight of the battery to the lifting ear, the force transmission path is from the oblique downward direction of the side of the first rib 150 close to the second end to the oblique upper direction of the side of the first rib 150 close to the first end. The end of the first rib 150 facing the second wall 140 is relative to the end of the first rib 150 facing the first wall 130, close to the second end 120 of the first cross frame 100, so that the inclination direction of the first rib 150 is almost the same as the force transmission path. The first rib 150 matches the direction of the force transmission path to provide sufficient support.

[0147] One end of the second rib 160 is connected to an end of the first wall 130 near the second end 120, and the other end is connected to the second wall 140. The end of the second rib 160 connected to the second wall 140 can be closer to the first end 110 of the first transverse frame 100 than the end of the second rib 160 connected to the first wall 130.

[0148] One end of the first longitudinal frame 200 can be connected to the second end portion 120 of the first transverse frame 100, and the other end extends away from the first transverse frame 100. Figure 2 Y direction) is perpendicular to the width extension direction of the first transverse frame 100 (such as Figure 2 mid-X direction).

[0149] In some examples, the first rib 150 , the second rib 160 , the first transverse frame 100 , and the first longitudinal frame 200 may be an integrated structure.

[0150] An embodiment of the present application provides a side beam 11 of a battery tray, wherein the side beam 11 is formed by arranging a first rib 150 and a second rib 160 inside a first transverse frame 100, and connecting one end of the first rib 150 to the first wall 130 of the first transverse frame 100, and connecting the other end to the second wall 140 opposite to the first wall 130. The first rib 150 is closer to the first end 110 of the first transverse frame 100 relative to the second rib 160, and a first acute angle is formed between the first rib 150 and the first wall 130, so that the first rib 150 can improve the lateral anti-extrusion ability of the first transverse frame 100 near the first end 110, and can also improve the first-order main mode of the first transverse frame 100 near the first end 110 in the thickness direction of the first transverse frame 100.

[0151] Furthermore, by connecting one end of the second rib 160 to one end of the first wall 130 close to the second end 120 and the other end to the second wall 140, the second rib 160 is close to the second end 120 of the first cross frame 100 relative to the first rib 150, so that the second rib 160 improves the lateral anti-extrusion ability of the first cross frame 100 close to the second end 120, as well as the first-order main mode in the thickness direction of the first cross frame 100, thereby achieving the lateral anti-extrusion ability and the first-order main mode of the side beam 11 while using fewer ribs, thereby reducing the manufacturing cost and weight of the side beam 11.

[0152] refer to Figure 3 The embodiment of the present application also provides a battery tray, which may include a bottom frame 20 and a side frame 10. At least a portion of the side frame 10 adopts the above-mentioned side beam 11. For example, when the side frame 10 is a rectangular frame, the side frame 10 has four side walls, one of which may adopt the above-mentioned side beam 11, or two opposite side walls may adopt the above-mentioned side beam 11, or all four side walls may adopt the above-mentioned side beam 11. The side frame 10 is arranged on the bottom frame 20, and the battery can be installed in the battery tray surrounded by the side frame 10 and the bottom frame 20. The battery tray may also include an upper cover, and the battery tray has an opening surrounded by the side frames 10, and the upper cover is arranged on the opening.

[0153] The first transverse frame 100 in the side beam 11 can be disposed on the bottom frame 20 for connection with the bottom frame 20 , and the first transverse frame 100 can be connected to the bottom frame 20 by welding.

[0154] The first longitudinal frame 200 in the side beam 11 can be used to connect to the upper cover. For example, the upper cover can be placed on the end of the first longitudinal frame 200 facing away from the bottom frame 20, and the upper cover is used to seal the batteries within the battery tray. In some examples, the first longitudinal frame 200 and the upper cover can be connected by a connector, and the joint between the upper cover and the first longitudinal frame 200 can be sealed by providing a sealing material at the connection between the upper cover and the first longitudinal frame 200.

[0155] An embodiment of the present application provides a battery tray, which includes a bottom frame 20 and a side frame 10. At least a portion of the side frame 10 adopts the above-mentioned side beam 11, thereby improving the lateral anti-extrusion ability of the side frame 10 and improving the first-order main mode of the side frame 10, thereby improving the structural strength of the battery tray.

[0156] refer to Figure 2 In some embodiments, the first acute angle (e.g. Figure 2 The angle of the first acute angle (the angle α) is greater than or equal to 50° and less than or equal to 70°. For example, the angle of the first acute angle can be one of 52°, 55°, 60°, 63°, and 67°, or the angle of the first acute angle can be any point within the range of greater than or equal to 50° and less than or equal to 70°.

[0157] Thus, by limiting the first acute angle to a range of 50° or greater and 70° or less, it is possible to avoid a situation where a too small first acute angle reduces the component of the first rib 150 in the thickness direction of the first transverse frame 100, thereby reducing the first-order principal mode of the first transverse frame 100 in the thickness direction. It is also possible to avoid a situation where an excessively large first acute angle reduces the ability of the first transverse frame 100 to resist lateral compression.

[0158] refer to Figure 2 and Figure 4 In some embodiments, the second wall surface 140 may include a first wall segment 141 and a second wall segment 142 connected to each other. The first wall segment 141 is disposed near the first end 110, and one end of the first rib 150 is connected to the first wall segment 141. The second wall segment 142 is connected to the end of the first wall segment 141 facing away from the first end 110, and the end of the second rib 160 facing 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 may be a one-piece structure.

[0159] refer to Figure 4 In some embodiments, the end of the second rib 160 facing away from the first wall 130 may be located in the middle of the second wall segment 142 .

[0160] refer to Figure 2 In some embodiments, along the width direction of the first horizontal frame 100 (eg Figure 2 The first distance is the distance between the connection point between the first rib 150 and the first wall 130 and the first end 110, and the second distance is the distance between the connection point between the first rib (150) and the first wall section (141) and the first end (110). Figure 2 L1 in) accounts for the second distance (such as Figure 2The percentage of L2) in is greater than or equal to 65% and less than or equal to 75%.

[0161] refer to Figure 2 It is understood that the first transverse frame 100 has an end wall disposed at the first end portion 110, with one end of the end wall connected to the first wall surface 130 and the other end connected to the second wall surface 140. One end of the first distance L1 is the connection between the surface of the first rib 150 facing the first end portion 110 and the first wall surface 130, or the connection between the surface of the first rib 150 facing away from the first end portion 110 and the first wall surface 130. The other end may extend to the surface of the end wall of the first transverse frame 100 facing the first rib 150, or the other end may extend to the surface of the end wall of the first transverse frame 100 facing away from the first rib 150.

[0162] Furthermore, one end of the second distance L2 is the connection between the surface of the first rib 150 facing the first end portion 110 and the second wall 140, or the connection between the surface of the first rib 150 facing away from the first end portion 110 and the second wall 140. The other end may extend to the surface of the end wall of the first transverse frame 100 facing the first rib 150, or the other end may extend to the surface of the end wall of the first transverse frame 100 facing away from the first rib 150.

[0163] In some embodiments, the percentage of the first distance L1 to the second distance L2 may be one of 67%, 70%, 71% and 74%, or any point value within the range of greater than or equal to 65% and less than or equal to 75%.

[0164] In this way, it is possible to avoid the first-order main mode of the first transverse frame 100 in the thickness direction from decreasing when the percentage of the first distance to the second distance exceeds the range of greater than or equal to 65% and less than or equal to 75%, thereby avoiding the increase in excitation of the resonance point on the first transverse frame 100 due to the decrease of one section mode, and avoiding the increase in the force acting on the pallet, thereby reducing the chance of damage to the pallet.

[0165] refer to Figure 4 In some embodiments, the first wall segment 141 may 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 facing 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 facing 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.

[0166] In this way, by making the extension direction of the second straight line segment 1412 intersect with the extension direction of the first straight line segment 1411, the ability of the first horizontal frame 100 to resist lateral impact can be improved through the second straight line segment 1412, and the first-order main mode of the second horizontal frame 300 in the thickness direction can be improved, further improving the strength of the first horizontal frame 100 and the strength of the frame of the battery tray.

[0167] refer to Figure 4 In some embodiments, along the width direction of the first transverse frame 100, the distance from the connection between the first rib 150 and the first wall 130 to the first end 110 is a first distance (e.g. Figure 4 L1 in ), the first distance accounts for the width of the first straight line segment 1411 (such as Figure 4 The percentage of L3) in is greater than or equal to 65% and less than or equal to 75%.

[0168] In some embodiments, the percentage of the first distance L1 to the width L3 of the first straight line segment 1411 can be one of 67%, 70%, 71% and 74%, or any point value within the range of greater than or equal to 65% and less than or equal to 75%.

[0169] In some embodiments, one end of the first straight segment 1411 may extend to the inner surface of the end wall of the first transverse frame 100 near the first end portion 110 facing the first rib 150, or may 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 may be the connection between the outer surface of the first straight segment 1411 facing away from the first wall 130 and the outer surface of the second straight segment 1412 facing away from the first wall 130.

[0170] In this way, it is possible to avoid the first-order main mode of the first transverse frame 100 in the thickness direction from decreasing when the percentage of the first distance to the width of the first straight line segment 1411 exceeds the range greater than or equal to 65% and less than or equal to 75%, thereby avoiding the increase in excitation of the resonance point on the first transverse frame 100 due to the decrease of one section of the mode, and avoiding the increase in the force acting on the pallet, thereby reducing the chance of damage to the pallet.

[0171] refer to Figure 4 In some embodiments, along the width direction of the first horizontal frame 100 (eg Figure 4 In the X-direction, the width of the first straight line segment 1411 is greater than or equal to 50 mm and less than or equal to 60 mm. For example, the width of the first straight line segment 1411 can be any value within the range of greater than or equal to 50 mm and less than or equal to 60 mm.

[0172] In this way, by making the width of the first straight line segment 1411 greater than or equal to 50 mm and less than or equal to 60 mm, while ensuring the lateral extrusion resistance and better first-order main mode of the first horizontal frame 100, it is possible to avoid the width of the first straight line segment 1411 being too large, which would cause the width of the related first wall 130 and the second wall 140 to be too large. In addition, it is possible to avoid the increase in the manufacturing cost of the first horizontal frame 100 due to the excessive width of the first horizontal frame 100, and the manufacturing cost of the battery tray can be reduced.

[0173] refer to Figure 4 In some embodiments, the connection point between the second rib 160 and the second wall 140 is the 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.

[0174] In this way, the structural strength of the wall portion between the first connection point and the second end portion 120 can be increased, thereby increasing the transverse extrusion resistance of the wall portion, thereby improving the transverse extrusion resistance of the first transverse frame 100 and improving the first-order principal mode of the wall portion. When the structure portion is welded to another structure, increasing the wall thickness of the structure portion can also improve the weldability between the structure portion and the other structure.

[0175] refer to Figure 4 In some embodiments, the wall thickness between the first connection point and the second end 120 on the second wall 140 (eg Figure 4 h1) 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.

[0176] In this way, the structural strength of the second wall 140 in this portion can be ensured, and the wall thickness of this portion can be avoided to be too large, which would lead to an increase in the manufacturing cost of the first transverse frame 100 and the cost increase of the side beam 11.

[0177] refer to Figure 4 In some embodiments, the side beam 11 of the battery tray may further include a second transverse frame 300 , which is disposed on a side of the second wall 140 facing away from the first wall 130 , and the second transverse frame 300 is disposed close to the second end 120 .

[0178] In this way, by providing the second transverse frame 300 , the second transverse frame 300 can be used to connect the battery protection plate of the battery tray, thereby improving the practicality of the side beam 11 .

[0179] If the second wall surface 140 has a first wall segment 141 and a second wall segment 142 , the second transverse frame 300 can be connected to the side of the second wall segment 142 facing away from the first wall surface 130 and used to connect to the protection plate of the battery.

[0180] refer to Figure 4 In some embodiments, in the thickness direction of the first transverse frame 100 (eg Figure 4 In the Y direction), the second horizontal frame 300 has a third wall 310 arranged opposite to the second wall 140. The width of the third wall 310 (e.g. Figure 4 L4) is greater than or equal to 10 mm and less than or equal to 20 mm.

[0181] It can be understood that the width L4 of the third wall 310 is the width of the outer surface of the third wall facing away from the first transverse frame along the width direction of the first transverse frame (eg Figure 4 width in the X direction).

[0182] In some embodiments, the width L4 of the third wall 310 can be one of 11 mm, 13 mm, 14 mm, 16 mm, 17 mm, 18 mm and 19 mm, or any point value within the range of greater than or equal to 10 mm and less than or equal to 20 mm.

[0183] In this way, by making the width of the third wall 310 greater than or equal to 10 mm and less than or equal to 20 mm, it can be ensured that the third wall 310 and the battery protection plate of the battery tray have sufficient connection area to ensure the connection stability between the third wall 310 and the battery tray, and it can also avoid the third wall 310 being too wide, which will lead to an increase in the manufacturing cost of the second cross frame 300, thereby reducing the manufacturing cost of the side beam 11.

[0184] refer to Figure 2 and Figure 4 In some embodiments, the first longitudinal frame 200 has a third rib 250 therein, and the third rib 250 and the first longitudinal frame 200 can be an integrated structure.

[0185] In the thickness direction of the first vertical frame 200 (eg Figure 4 In the middle X direction), the first longitudinal frame 200 may include a fourth wall 210 and a fifth wall 220 that are oppositely arranged, and one end of the fourth wall 210 is connected to an end of the first wall 130 close to the second end 120.

[0186] The third rib 250 may include a first end 251 and a second end 252 oppositely disposed, wherein the first end 251 is connected to the fourth wall 210 , the second end 252 is connected to the fifth wall 220 , and the second end 252 is closer to the first transverse frame 100 relative to the first end 251 .

[0187] In some examples, in the width direction of the first vertical frame 200 (eg Figure 4 In the middle Y direction), the second end 252 of the third rib 250 is closer to the first transverse frame 100 relative to the first end 251.

[0188] In this way, by setting the third rib 250 in the first longitudinal frame 200, and connecting one end of the third rib 250 to the fourth wall 210 of the first longitudinal frame 200, and connecting the other end of the third rib 250 to the fifth wall 220 of the first longitudinal frame 200, the lateral anti-extrusion capability of the first longitudinal frame 200 can be improved, thereby improving the lateral anti-extrusion capability of the side beam 11 of the battery tray.

[0189] refer to Figure 4 In some embodiments, the third rib 250 forms a second acute angle with the thickness direction of the first longitudinal frame 200. The second acute angle (e.g. Figure 4 The angle of the middle β angle is greater than or equal to 15° and less than or equal to 30°.

[0190] In some embodiments, the angle of the second acute angle can be one of 16°, 18°, 19°, 20°, 21°, 23°, 26° and 28°, or any point value within the range of greater than or equal to 15° and less than or equal to 30°.

[0191] In this way, by making the third rib 250 intersect with the thickness direction of the first longitudinal frame 200 so that the second acute angle is greater than or equal to 15° and less than or equal to 30°, the third rib 250 can not only improve the lateral anti-extrusion capability of the first longitudinal frame 200, but also improve the first-order main mode of the first longitudinal frame 200, thereby enriching the function of the third rib 250.

[0192] Furthermore, by making the second acute angle greater than or equal to 15° and less than or equal to 30°, the third rib 250 can ensure that it can improve the first-order main mode of the first vertical frame 200 and be more used to improve the lateral anti-extrusion capability of the first vertical frame 200.

[0193] refer to Figure 4 In some embodiments, in the width direction of the fourth wall 210 (eg Figure 4 In the Y direction), the distance from the first end 251 of the third rib 250 to the second end 120 of the fourth wall 210 facing away from the first transverse frame 100 is the second distance (e.g. Figure 4 The second distance L5 accounts for the width of the fourth wall 210 (e.g. Figure 4 The percentage of L6) is greater than or equal to 20% and less than or equal to 30%.

[0194] refer to Figure 4It is understood that the second distance L5 may be the distance between the inner surface of the sixth wall 230 and the surface of the first end 251 facing the sixth wall 230. Alternatively, the second distance L5 may also be the distance between the outer surface of the sixth wall 230 and the surface of the first end 251 facing the sixth wall 230.

[0195] The width of the fourth wall 210 can be, along the width direction of the first longitudinal frame (eg Figure 4 The distance between the outer surface of the first wall 130 and the inner surface of the sixth wall 230 in the Y direction.

[0196] In some embodiments, the percentage of the second distance L5 to the width L6 of the fourth wall 210 can be one of 21%, 23%, 24%, 25%, 27% and 29%, or any point value within the range greater than or equal to 20% and less than or equal to 30%.

[0197] In this way, since the end of the first longitudinal frame 200 faces away from the first transverse frame 100, the lateral extrusion force exerted on the first longitudinal frame 200 cannot be shared by the first transverse frame 100. By making the second distance account for a percentage greater than or equal to 20% and less than or equal to 30% of the width of the fourth wall 210, the third rib 250 can be brought close to the side of the first longitudinal frame 200 facing away from the first transverse frame 100, so that the third rib 250 can improve the lateral anti-extrusion ability of the part of the first longitudinal frame 200 facing away from the first transverse frame 100.

[0198] refer to Figure 4 In some embodiments, the first longitudinal frame 200 further includes a fourth rib 260, which has a third end 261 and a fourth end 262 disposed opposite each other. The third end 261 is connected to the fourth wall 210, is spaced apart from the first end 251 of the third rib 250, and is 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 220 and is connected to the second end 252 of the third rib 250.

[0199] In the width direction of the first vertical frame 200 (eg Figure 4 In the middle Y direction), the third end 261 of the fourth rib 260 is closer to the first transverse frame 100 relative to the fourth end 262.

[0200] Thus, by connecting the third end 261 of the fourth rib 260 to the fourth wall 210 and the fourth end 262 of the fourth rib 260 to the fifth wall 220, the fourth rib 260 can improve the transverse compression resistance of the first vertical frame 200. Furthermore, by positioning the fourth rib 260 closer to the first transverse frame 100 relative to the third rib 250 and combining the use of the third rib 250 within the first vertical frame 200, the structural strength distribution of the first vertical frame 200 can be made more uniform, further improving the overall structural strength of the first vertical frame 200.

[0201] refer to Figure 4 In some embodiments, the fourth rib 260 intersects the thickness direction of the first longitudinal frame 200 and forms a third acute angle (eg Figure 4 The third acute angle γ is greater than or equal to 30° and less than or equal to 40°.

[0202] In some embodiments, the third acute angle γ can be one of 30°, 31°, 33°, 35°, 37° and 38°, or any point value within the range of greater than or equal to 30° and less than or equal to 40°.

[0203] In this way, by making the fourth rib 260 intersect with the thickness direction of the first longitudinal frame 200 and form a third acute angle, the fourth rib 260 can not only improve the lateral anti-extrusion ability of the first longitudinal frame 200, but also improve the first-order main mode of the first longitudinal frame 200, which helps to improve the comprehensive performance of the first longitudinal frame 200 and can further improve the structural strength of the side beam 11 of the battery tray.

[0204] refer to Figure 4 In some embodiments, in the width direction of the fourth wall 210, the distance from the third end 261 of the fourth rib 260 to the connection between the fourth wall 210 and the first wall 130 is a third distance (e.g. Figure 4 The third distance L7 accounts for the width of the fourth wall 210 (e.g. Figure 4 The percentage of L6) is greater than or equal to 10% and less than or equal to 20%.

[0205] refer to Figure 4 In some embodiments, the fourth distance L7 may be the distance between the surface of the third end 261 facing the first transverse frame 100 and the inner surface of the first wall 130 facing the second wall 140 .

[0206] In some embodiments, the percentage of the third distance L7 to the width L6 of the fourth wall 210 can be one of 11%, 12%, 13%, 14%, 16%, 17% and 19%, or it can be any point value within the range greater than or equal to 10% and less than or equal to 20%.

[0207] In this way, by making the percentage of the third distance to the width of the fourth wall 210 greater than or equal to 10% and less than or equal to 20%, the fourth rib 260 can be located closer to the end of the first horizontal frame 100 relative to the third rib 250, and the third rib 250 and the fourth rib 260 can be distributed more evenly on the first longitudinal frame 200, so that the third rib 250 and the fourth rib 260 can provide more uniform structural reinforcement to the first longitudinal frame 200, thereby improving the rationality of the layout of the third rib 250 and the fourth rib 260 in the first longitudinal frame 200.

[0208] refer to Figure 4 In some embodiments, the first longitudinal frame 200 may further include a sixth wall 230 , one end of the sixth wall 230 being connected to the end of the fourth wall 210 facing away from the first transverse frame 100 , and the other end of the sixth wall 230 being connected to the end of the fifth wall 220 facing away from the first transverse frame 100 .

[0209] In this way, by providing the sixth wall surface 230 on the side of the first longitudinal frame 200 facing away from the first transverse frame 100 , the side beam 11 can be used to connect with the upper cover of the battery tray.

[0210] refer to Figure 4 In some embodiments, the sixth wall 230 has a groove 231, with the opening of the groove 231 facing the outside of the first vertical frame 200. Thus, by providing the groove 231 on the sixth wall 230, a sealing material can be filled into the groove 231 to achieve a seal between the sixth wall 230 and the upper cover. The groove 231 can also limit the sealing material and prevent the sealing material from moving and causing sealing failure.

[0211] refer to Figure 4 In some embodiments, in the width direction of the sixth wall 230 (eg Figure 4 In the Y direction), the distance from the groove 231 to the fourth wall 210 (e.g. Figure 4 For example, the distance L8 from the groove 231 to the fourth wall 210 may be any one of 15 mm, 16 mm, 17 mm, 117.5 mm, 18 mm, 19 mm, and 20 mm, or any value within the range of 15 mm to 20 mm.

[0212] In a specific implementation, the distance L8 from the groove 231 to the fourth wall 210 can be, in the thickness direction of the first longitudinal frame 200 (eg Figure 4 In the X direction), the distance between the outer wall of the groove 231 facing the fourth wall 210 and the fourth wall 210.

[0213] In the width direction of the sixth wall 230, by making the distance from the groove 231 to the fourth wall 210 greater than or equal to 15 mm and less than or equal to 20 mm, the area between the fourth wall 210 and the upper cover can be reduced and increased, making it easier to connect the sixth wall 230 to the upper cover in this part of the area by using a connecting piece.

[0214] refer to Figure 4 In some embodiments, the width of the groove 231 (eg Figure 4 For example, the width L9 of the groove 231 may be 6 mm, 7 mm, 8 mm, or 10 mm.

[0215] Thus, by making the width of the groove 231 greater than or equal to 5 mm, the sealing material disposed 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.

[0216] The depth of the groove 231 (eg Figure 4 For example, the depth h2 of the groove 231 may be 2 mm, 3 mm, 4 mm, or 6 mm.

[0217] In this way, by making the depth of the groove 231 greater than or equal to 1 mm, it is possible to ensure that the groove 231 effectively limits the sealing material, thereby preventing the groove 231 from being too shallow and thus failing to effectively limit the sealing material.

[0218] In some examples, the sealing material may be a sealing structural adhesive.

[0219] refer to Figure 4 In some embodiments, the first vertical frame 200 may further include a seventh wall 240. One end of the seventh wall 240 is connected to the end of the second wall 140 of the first transverse frame 100 facing away from the first end 110, and the other end of the seventh wall 240 is connected to the fifth wall 220. The seventh wall 240 can be welded to the bottom frame 20 of the battery tray.

[0220] In some embodiments, the thickness of the seventh wall 240 (eg Figure 4 For example, the thickness h3 of the seventh wall surface 240 may be any one of 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, and 10 mm, or any value within the range of 5 mm or more and 10 mm or less.

[0221] In this way, by setting the seventh wall 240 of the first longitudinal frame 200 at the other end of the first longitudinal frame 200 opposite to the sixth wall 230, and connecting the seventh wall 240 to the second wall 140, the seventh wall 240 can be used as a welding surface and used for welding connection with the bottom frame 20 of the battery tray, so as to facilitate the connection between the side beam 11 and the bottom frame 20 of the battery tray.

[0222] Furthermore, by making the wall thickness of the seventh wall 240 greater than or equal to 5 mm and less than or equal to 10 mm, it is possible to avoid welding through the seventh wall 240 due to the wall thickness being too thin, or to avoid an increase in the cost of the first longitudinal frame 200 and the side beam 11 due to the wall thickness of the seventh wall 240 being too large.

[0223] refer to Figure 4 In some embodiments, the width of the seventh wall 240 (eg Figure 4 For example, the width L10 of the seventh wall 240 may be any one of 11 mm, 13 mm, 16 mm, 18 mm, 20 mm, 21 mm, and 26 mm, or any value within the range of 10 mm to 30 mm.

[0224] In some embodiments, the width L10 of the seventh wall 240 may be the width of the outer wall of the seventh wall 240 facing away from the sixth wall 230 .

[0225] In this way, by making the width of the seventh wall 240 greater than or equal to 10 mm and less than or equal to 30 mm, it can be ensured that there is a sufficiently thick welding area between the seventh wall 240 and the bottom frame 20 of the battery tray, which facilitates the implementation of the welding process and can avoid the waste of materials caused by the width of the seventh wall 240 being too wide, thereby reducing the manufacturing cost of the first longitudinal frame 200 and the manufacturing cost of the side beam 11.

[0226] refer to Figure 4 In some embodiments, the battery tray's side beam 11 may further include a second longitudinal frame 400. One end of the second longitudinal frame 400 is positioned on the fourth wall 210, and the other end of the second longitudinal frame 400 extends away from the fourth wall 210. The second longitudinal frame 400 is configured to connect to the vehicle body. The second longitudinal frame 400 can be sealed to the vehicle body, achieving a battery-body integration solution.

[0227] refer to Figure 4 In some embodiments, the second vertical frame 400 can be connected to the side of the first vertical frame 200 facing away from the first transverse frame 100 , and the second vertical frame 400 can be connected to the side of the fourth wall 210 of the first vertical frame 200 facing away from the fifth wall 220 .

[0228] refer to Figure 4 In some embodiments, the second longitudinal frame 400 may include an eighth wall 410 and a ninth wall 420. One end of the eighth wall 410 is connected to the fourth wall 210 for connection to the vehicle body. One end of the ninth wall 420 is connected to the other end of the eighth wall 410 facing away from the sixth wall 230, and the other end of the ninth wall 420 is connected to the fourth wall 210. The connection point between the ninth wall 420 and the fourth wall 210 is spaced apart from the connection point between the eighth wall 410 and the fourth wall 210 on the side facing the first transverse frame 100.

[0229] The ninth wall 420 is tilted relative to the eighth wall 410 , and the included angle between the width extension direction of the ninth wall 420 and the width extension direction of the eighth wall 410 can be less than 90°, for example, can be one of 30°, 45° or 60°.

[0230] In a specific implementation, one end of the eighth wall 410 is connected to the connection between the fourth wall 210 and the sixth wall 230. One end of the ninth wall 420 is connected to the other end of the eighth wall 410 facing away from the sixth wall 230, and the other end is connected to the fourth wall 210 and connected to the first end 251 of the third rib 250.

[0231] In some embodiments, foam may be provided on a side surface of the eighth wall 410 facing away from the first transverse frame 100 so as to be sealed and connected to the vehicle body through the surface.

[0232] By providing the ninth wall 420, with one end of the ninth wall 420 connected to the eighth wall 410 and the other end connected to the fourth wall 210, the ninth wall 420 can support the eighth wall 410 and improve the lateral compression resistance of the second vertical frame 400. Furthermore, by connecting the ninth wall 420 and the third rib 250 on the fourth wall 210, force transmission between the ninth wall 420 and the third rib 250 can be facilitated, and the third rib 250 can strengthen and support the lateral compression resistance of the ninth wall 420.

[0233] refer to Figure 4 In some embodiments, the width of the eighth wall 410 (eg Figure 4 For example, the width L11 of the eighth wall surface 410 may be any value within the range of 10 mm to 30 mm.

[0234] In a specific implementation, the width L11 of the eighth wall 410 can be, along the thickness direction of the first longitudinal frame (eg Figure 4The distance from the end of the eighth wall 410 facing away from the fourth wall 210 to the outer surface of the fourth wall 210 (in the X direction) is:

[0235] Based on the above embodiment, except for the seventh wall 240 and the thickness of the second wall 140 between the first connection point and the second end 120, the thickness of each wall and each rib on the side beam 11 can be greater than or equal to 2 mm and less than or equal to 4 mm. For example, the thickness of the first wall 130, the third wall 310, the fourth wall 210, the fifth wall 220, the sixth wall 230, the eighth wall 410, and the ninth wall 420 can all be greater than or equal to 2 mm and less than or equal to 4 mm. For example, the thickness can be any 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.

[0236] On the basis of the above embodiment, if the side beam 11 has the first rib 150, the second rib 160, the third rib 250 and the fourth rib 260 at the same time, and the wall surfaces of the first transverse frame 100 and the first longitudinal frame 200 are not missing, the lower limit of the first-order main mode is controlled at 70 Hz, and random vibration for 21 hours under the relevant road spectrum can control the upper limit of the damage value of each component to 0.01, and the lower limit of the lateral anti-extrusion force is controlled at 110 kN.

[0237] Removing only the first rib 150 would reduce the first-order principal mode of the side beam 11 to 67.3 Hz, and the lateral crush resistance of the side beam 11 would be reduced to 95 kN. Under random vibration conditions, the damage value of the key component, the battery cell housing, rose to 0.2, and the damage value of the weld of the tray bottom frame 20 increased significantly to 0.6.

[0238] If only the second rib 160 is removed, the first-order main mode of the side beam 11 will be reduced to 65.3 Hz, and the lateral compression resistance of the side beam 11 will be reduced to 97 kN. Under random vibration conditions, the damage value of the key component, the battery cell shell, will increase to 0.1.

[0239] Removing only the second wall section 142 connected to the second rib 160 on the second wall surface 140 would reduce the first-order main mode of the side beam 11 to 67.0 Hz, and the lateral compression resistance of the side beam 11 would be reduced to 88 kN. The damage value of the key component, the battery cell housing, increased to 0.2 under random vibration conditions.

[0240] If only the third rib 250 is removed, the first-order main mode of the side beam 11 will be reduced to 69.2 Hz, and the transverse anti-compression capacity of the side beam 11 will be reduced to 108 KN.

[0241] If only the fourth stiffener 260 is removed, the first-order main mode of the side beam 11 will be reduced to 68.2 Hz, and the transverse anti-compression capacity of the side beam 11 will be reduced to 102 KN.

[0242] Based on the above embodiments, Figure 5 From the simulated stress cloud map of the middle side beam 11 , it can be seen that the closer to the first stiffener 150 , the second stiffener 160 and the second wall section 142 , the brighter the cloud map color is. These three positions contribute more to the first-order main mode of the overall structure of the side beam 11 .

[0243] Therefore, the influence of the first rib 150 and the second rib 160 on the first-order principal mode of the side beam 11 is greater than the influence of the third rib 250 and the fourth rib 260 on the first-order principal mode of the side beam 11 .

[0244] By arranging the first rib 150, the second rib 160, and the second wall segment 142 at corresponding positions, the first-order principal mode of the side beam 11 can be ensured and the structural strength of the side beam 11 can be improved. The structural strength of the side beam 11 can be further improved by further arranging the third rib 250 and the fourth rib 260 within the first longitudinal frame 200.

[0245] An embodiment of the present application also provides a battery system, which may include a battery and a battery tray thereon.

[0246] An embodiment of the present application further provides a battery system, which can improve the safety of battery use and reduce the probability of the battery being damaged by external collision or compression by using the above-mentioned battery tray to support the battery.

[0247] An embodiment of the present application further provides an electrical device, which may include an electrical device and a battery system as described above, wherein the battery system is used to provide electrical energy to the electrical device.

[0248] The embodiment of the present application also provides an electric device, which uses the above-mentioned battery system to power an electric device, thereby improving the safety of the electric device during use and enhancing the user experience.

[0249] Among them, the electrical equipment can be a vehicle or an energy storage device. Among them, the vehicle can be a new energy vehicle (New Energy Vehicle), such as a pure electric vehicle (Pure Electric Vehicle / Battery Electric Vehicle; abbreviated as: PEV / BEV), a range extended electric vehicle (Range Extended Electric Vehicle; abbreviated as: REEV), a hybrid electric vehicle (Hybrid Electric Vehicle; abbreviated as: HEV), a fuel cell electric vehicle), and the vehicle can also be any vehicle with a battery.

[0250] The electrical device may be a motor or an electronically controlled device, such as vehicle-mounted equipment or air-conditioning components.

[0251] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0252] It should be noted that phrases such as "in a specific implementation," "in some embodiments," "in this embodiment," and "exemplarily" mentioned in the specification indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0253] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0254] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0255] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0256] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions 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: include: A first transverse frame (100), wherein in a width direction of the first transverse frame (100), the first transverse frame (100) has a first end portion (110) and a second end portion (120) that are oppositely disposed, and in a thickness direction of the first transverse frame (100), the first transverse frame (100) has a first wall surface (130) and a second wall surface (140) that are oppositely disposed, and the first transverse frame (100) has a first rib plate (150) and a second rib plate (160) that are spaced apart therein; One end of the first rib (150) is connected to the first wall (130), and the other end is connected to the second wall (140), and a first acute angle is formed between the first rib (150) and the first wall (130); One end of the second rib (160) is connected to one end of the first wall (130) close to the second end (120), and the other end is connected to the second wall (140); The first longitudinal frame (200) is connected to the second end portion (120) of the first transverse frame (100), and the width extension direction of the first longitudinal frame (200) is perpendicular to the width extension direction of the first transverse frame (100).

2. The side beam (11) of the 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 side beam (11) of the battery tray according to claim 1, characterized in that: One end of the first rib (150) facing the second wall (140) is closer to the second end portion (120) of the first transverse frame (100) relative to the other end of the first rib (150) facing the first wall (130).

4. The side beam (11) of the battery tray according to claim 1, characterized in that: The second wall (140) includes: A first wall section (141) is disposed near the first end portion (110), and one end of the first rib (150) is connected to the first wall section (141); The second wall section (142) is connected to the end of the first wall section (141) facing away from the first end (110), and the end of the second rib (160) facing away from the first wall surface (130) is connected to the second wall section (142).

5. The side beam (11) of the battery tray according to claim 4, characterized in that: Along the width direction of the first transverse frame (100), the distance from the connection between the first rib (150) and the first wall surface (130) to the first end portion (110) is a first distance, and the distance from the connection between the first wall section (141) and the first rib (150) to the first end portion (110) is a second distance, and the percentage of the first distance to the second distance is greater than or equal to 65% and less than or equal to 75%.

6. The side beam (11) of the battery tray according to claim 4, characterized in that: The first wall section (141) comprises: a first straight line segment (1411), the first rib (150) being connected to the first straight line segment (1411); a second straight line segment (1412), one end of which is connected to the end of the first straight line segment (1411) facing away from the first end portion (110), and the other end of which extends away from the first wall surface (130) and is connected to the end of the second wall segment (142) facing away from the second end portion (120); The extension direction of the second straight line segment (1412) intersects with the extension direction of the first straight line segment (1411).

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

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

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

10. The side beam (11) of the battery tray according to claim 9, characterized in that: The first connection point is located in the middle of the second wall segment (142).

11. The side beam (11) of the battery tray according to claim 9, characterized in that: On the second wall surface (140), the wall thickness between the first connection point and the second end portion (120) is greater than or equal to 5 mm and less than or equal to 10 mm.

12. The side beam (11) of the battery tray according to claim 1, characterized in that: It also includes a second transverse frame (300), which is arranged on the side of the second wall (140) facing away from the first wall (130), and the second transverse frame (300) is arranged close to the second end (120).

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

14. The side beam (11) of the battery tray according to claim 1, characterized in that: The thickness of the first wall surface (130) is greater than or equal to 2 mm and less than or equal to 4 mm; And / or, 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 side beam (11) of the battery tray according to any one of claims 1 to 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) that are arranged opposite to each other, and one end of the fourth wall surface (210) is connected to one end of the first wall surface (130) close to the second end portion (120); The third rib (250) includes a first end (251) and a second end (252) that are arranged opposite to each other, wherein the first end (251) is connected to the fourth wall (210), the second end (252) is connected to the fifth wall (220), and the second end (252) is closer to the first transverse frame (100) relative to the first end (251).

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

17. The side beam (11) of the battery tray according to claim 15, characterized in that: In the width direction of the fourth wall (210), the distance from the first end (251) of the third rib (250) to the second end (120) on the fourth wall (210) facing away from the first transverse frame (100) is a second distance; The percentage of the second distance to the width of the fourth wall (210) is greater than or equal to 20% and less than or equal to 30%.

18. The side beam (11) of the battery tray according to claim 15, characterized in that: The first longitudinal frame (200) further comprises a fourth rib (260); The fourth rib (260) has a third end (261) and a fourth end (262) that are arranged opposite to each other; The third end (261) is connected to the fourth wall (210), and the third end (261) is spaced apart from the first end (251) of the third rib (250) and is located on a 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 (250).

19. The side beam (11) of the battery tray according to claim 18, characterized in that: The fourth rib (260) intersects with the first longitudinal frame (200) in a thickness direction and forms a third acute angle; Furthermore, the angle of the third acute angle is greater than or equal to 30° and less than or equal to 40°.

20. The side beam (11) of the battery tray according to claim 18, characterized in that: In the width direction of the fourth wall surface (210), the distance from the third end (261) to the connection point between the fourth wall surface (210) and the first wall surface (130) is a third distance; The percentage of the third distance to the width of the fourth wall (210) is greater than or equal to 10% and less than or equal to 20%.

21. The side beam (11) of the battery tray according to claim 15, characterized in that: The first longitudinal frame (200) further includes a sixth wall surface (230); One end of the sixth wall (230) is connected to the end of the fourth wall (210) facing away from the first transverse frame (100), and the other end of the sixth wall (230) is connected to the end of the fifth wall (220) facing away from the first transverse frame (100); The sixth wall surface (230) has a groove (231), and the notch of the groove (231) faces the outside of the first longitudinal frame (200).

22. The side beam (11) of the battery tray according to claim 21, characterized in that: In the width direction of the sixth wall surface (230), the distance 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.

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

24. The side beam (11) of the battery tray according to claim 21, characterized in that: The first vertical frame (200) further includes a seventh wall surface (240); One end of the seventh wall (240) is connected to an end of the second wall (140) facing away from the first end portion (110), and the other end of the seventh wall (240) is connected to the fifth wall (220).

25. The side beam (11) of the battery tray according to claim 24, characterized in that: The width of the seventh wall (240) is greater than or equal to 10 mm and less than or equal to 30 mm And / or, the thickness of the seventh wall (240) is greater than or equal to 5 mm and less than or equal to 10 mm; And / or, the thickness of the fourth wall (210) is greater than or equal to 2 mm and less than or equal to 4 mm; and / or, the thickness of the fifth wall (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 (230) is greater than or equal to 2 mm and less than or equal to 4 mm.

26. The side beam (11) of the battery tray according to claim 21, characterized in that: Also included is a second vertical frame (400); 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). The second longitudinal frame is used to be connected to the vehicle body.

27. The side beam (11) of the battery tray according to claim 26, characterized in that: The second vertical frame (400) includes: an eighth wall (410), one end of which is connected to the fourth wall (210) and is used for connection to the vehicle body; a ninth wall (420), one end of which is connected to the other end of the eighth wall (410) facing away from the sixth wall (230), and the other end of which is connected to the fourth wall (210); The connection point between the ninth wall surface (420) and the fourth wall surface (210) is spaced apart from the connection point between the eighth wall surface (410) and the fourth wall surface (210) and is located on the side facing the first transverse frame (100).

28. The side beam (11) of the battery tray 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 (250).

29. The side beam (11) of the battery tray according to claim 27, characterized in that: The thickness of the eighth wall (410) is greater than or equal to 2 mm and less than or equal to 4 mm; And / or, the thickness of the ninth wall (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 (410) is greater than or equal to 15 mm and less than or equal to 30 mm.

30. A battery tray, characterized in that: It comprises a bottom frame and a side frame, wherein at least a portion of the side frame adopts the side beam (11) of the battery tray according to any one of claims 1 to 29; The first transverse frame (100) of the side beam (11) is connected to the bottom frame.

31. A battery system, characterized in that: Comprising a battery and a battery tray as claimed in claim 30.

32. An electrical device, characterized in that: It comprises an electrical device and a battery system as claimed in claim 31, wherein the battery system is used to provide electrical energy to the electrical device.

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