Edge beam, edge beam assembly, tray, battery assembly and electric equipment

Abstract

The utility model discloses a boundary beam, a boundary beam assembly, a tray, a battery assembly and electric equipment, the boundary beam is used for the tray of the battery assembly, the boundary beam comprises a frame, a first plate and a reinforcing plate, an accommodating cavity is formed in the frame, the frame comprises the first plate and the reinforcing plate which are connected with each other, and the first plate and the reinforcing plate are at least partially overlapped in the thickness direction of the first plate and the reinforcing plate; the frame is provided with a through hole, the through hole penetrates through the first plate and the reinforcing plate and is communicated with the containing cavity, and the structural strength of the edge beam is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a side beam, a side beam assembly, a tray, a battery assembly and electrical equipment. Background Art

[0002] The side beam of the battery device can be used as a load-bearing structure as well as a structure for the battery device to discharge thermal runaway gas. In the prior art, the design of the exhaust channel of the battery device mainly utilizes the extra space inside the battery pack of the battery device and uses plastic parts to design the exhaust channel. However, in the case of sudden thermal runaway of the battery pack, the high-temperature gas in the battery pack will cause the plastic parts to deform due to heat, causing the exhaust channel to deform. Utility Model Content

[0003] The utility model aims to provide a side beam, a side beam assembly, a tray, a battery assembly and an electrical device, so as to solve the problem of poor structural strength of the side beam.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In the first aspect, the utility model provides a side beam, which is used for a tray of a battery assembly, comprising: a frame, wherein a accommodating cavity is formed inside the frame; the frame comprises a first plate and a reinforcing plate connected to each other, in the thickness direction of the first plate and the reinforcing plate, the first plate and the reinforcing plate at least partially overlap, the frame is provided with a through hole, the through hole passes through the first plate and the reinforcing plate, and is connected to the accommodating cavity.

[0006] In one embodiment, the first plate is provided with a first through hole, the reinforcing plate is provided with a second through hole, and the first through hole is connected to the accommodating cavity through the second through hole.

[0007] In one embodiment, a radial dimension of the first through hole is greater than a radial dimension of the second through hole, or a radial dimension of the first through hole is smaller than a radial dimension of the second through hole.

[0008] In one embodiment, the distance between the edge of the first through hole and the edge of the second through hole is at least 2 mm.

[0009] In one embodiment, the sum of the projected areas of the first through hole and the second through hole in a direction perpendicular to the thickness of the first plate is not less than the projected area of ​​the explosion-proof valve of the battery assembly in a direction perpendicular to the thickness of the first plate.

[0010] In one embodiment, a width of a region between the first through hole and the second through hole is greater than or equal to 2 mm.

[0011] In one embodiment, the side beam further includes a weld portion, which is disposed between an inner circumferential surface of the second through hole and an inner circumferential surface of the first through hole, and a radial width of the weld portion is equal to a distance between the first through hole and the second through hole.

[0012] In one embodiment, the frame further includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are spaced apart along a second direction, the first connecting plate and the second connecting plate are both connected to the first plate, and the second direction intersects with the first direction.

[0013] In one embodiment, the frame further includes a first connecting rib and a second connecting rib, the first connecting rib and the second connecting rib are arranged in the accommodating cavity at intervals and connected to the frame, and the first connecting rib and the second connecting rib separate the accommodating cavity to form an exhaust channel.

[0014] In one embodiment, the frame also includes a second plate, the second plate and the first plate are spaced apart along a first direction, the second plate is provided with an air outlet, one end of the first connecting rib is connected to the reinforcing plate, and the other end is connected to the second plate, and one end of the second connecting rib is connected to the reinforcing plate, and the other end is connected to the second plate.

[0015] In one embodiment, the frame, the first connecting ribs and the second connecting ribs are an integrated structure.

[0016] In one embodiment, at least a portion of the area where the first plate and the reinforcing plate are connected is fully welded using laser penetration welding.

[0017] In a second aspect, the utility model further provides a side beam assembly, comprising an explosion-proof valve and a side beam as described in any one of the various embodiments of the first aspect, wherein the explosion-proof valve cooperates with an air outlet of the frame.

[0018] In one embodiment, the side beam assembly further includes a deflector, which surrounds the explosion-proof valve and has an opening, and the opening faces the ground.

[0019] In the third aspect, the utility model also provides a pallet, comprising a first side beam assembly, a second side beam assembly and a plurality of support beams, the first side beam assembly and the second side beam assembly are both side beam assemblies as described in any one of the various embodiments of the second aspect, the first side beam assembly and the second side beam assembly are arranged relative to each other, one end of the plurality of support beams is connected to the first side beam assembly, and the other end is connected to the second side beam assembly, the first side beam assembly, the second side beam assembly and the plurality of support beams enclose a receiving cavity, the first side beam assembly and the second side beam assembly are both provided with at least one first through hole and at least one second through hole, the first through hole is connected to the second through hole, the first through hole is also connected to the receiving cavity, and the second through hole is connected to the accommodating cavity.

[0020] In one embodiment, the receiving cavity faces away from the explosion-proof valve of the side beam assembly.

[0021] In one embodiment, the pallet also includes a connecting beam, which encloses a accommodating space. One end of the connecting beam is connected to the first side beam assembly, and the other end is connected to the second side beam assembly. The structure of the connecting beam is the same as that of the side beam, and the accommodating space is connected to the accommodating cavity of the frame.

[0022] In a fourth aspect, the utility model further provides a battery assembly, comprising a battery and a tray as described in any one of the various embodiments of the third aspect, wherein the tray is connected to the battery, and the receiving cavity receives the battery.

[0023] In a fifth aspect, the utility model further provides an electrical device, comprising a battery assembly as described in any of the various embodiments of the fourth aspect.

[0024] By setting a frame, a first plate and a reinforcing plate, a accommodating cavity is formed inside the frame, and the frame includes a first plate and a reinforcing plate that are connected. In the thickness direction of the first plate and the reinforcing plate, the first plate and the reinforcing plate at least partially overlap, and the frame is provided with a through hole, which passes through the first plate and the reinforcing plate and is connected to the accommodating cavity, thereby improving the structural strength of the side beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a cross-sectional view of a side beam of an embodiment;

[0027] Figure 2 is a side view of a side beam of an embodiment;

[0028] Figure 3 The diagram is a schematic structural diagram of an inner panel of a side beam according to an embodiment.

[0029] Description of reference numerals:

[0030] 10-side beam, 11-frame, 12-air outlet, 13-first connecting rib, 14-second connecting rib, 15-first plate, 151-first through hole, 16-second plate, 17-reinforcement plate, 171-second through hole, 18-first connecting plate, 19-second connecting plate, 20-exhaust channel, 21-first chamber, 22-second chamber, 23-matching hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0033] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0034] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] In the prior art, the exhaust channel 20 in the battery pack design mainly makes full use of the extra space inside the package and uses plastic parts to design the exhaust channel 20. As the complexity of the structural design increases, the exhaust smoothness of the exhaust channel 20 decreases. At the same time, in the event of sudden thermal runaway of the battery, the high-temperature gas in the battery pack escapes everywhere, which will accelerate the thermal runaway of the battery cell. The high temperature will also cause the plastic parts to deform due to heat. That is, once serious thermal runaway occurs, the exhaust channel 20 will face the risk of blockage, resulting in exhaust obstruction. In addition, as the space utilization rate and capacity density of the battery pack gradually increase, the available space inside the battery pack is also compressed to the extreme. Therefore, the utility model considers using at least part of the internal chamber of the side beam 10 as the exhaust channel 20 of the battery pack.

[0036] The utility model embodiment provides a side beam 10, the side beam 10 is used for the tray of the battery assembly, please refer to Figure 1 and Figure 2 , including a frame 11, a first plate 15 and a reinforcing plate 17.

[0037] A receiving cavity is formed inside the frame 11. Optionally, an air outlet 12 connected to the receiving cavity is formed on the frame 11. Optionally, the shape of the cross section of the air outlet 12 along the axial direction can be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the cross section of the air outlet 12 along the axial direction can be, but not limited to, a quadrilateral, hexagon, circular, octagonal, elliptical, etc.

[0038] The frame 11 includes a first plate 15 and a reinforcing plate 17 that are connected. In the thickness direction of the first plate 15 and the reinforcing plate 17, the first plate 15 and the reinforcing plate 17 at least partially overlap. The frame 11 is provided with a through hole that passes through the first plate 15 and the reinforcing plate 17 and is connected to the accommodating cavity.

[0039] By setting the frame 11, the first plate 15 and the reinforcing plate 17, a accommodating cavity is formed inside the frame 11. The frame 11 includes the first plate 15 and the reinforcing plate 17 connected to each other. In the thickness direction of the first plate 15 and the reinforcing plate 17, the first plate 15 and the reinforcing plate 17 at least partially overlap. The frame 11 is provided with a through hole, which passes through the first plate 15 and the reinforcing plate 17 and is connected to the accommodating cavity, thereby improving the structural strength of the side beam 10.

[0040] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The first plate 15 defines a first through hole 151 , the reinforcing plate 17 defines a second through hole 171 , and the first through hole 151 is connected to the accommodating cavity through the second through hole 171 .

[0041] Optional, please refer to Figure 1 , Figure 2and Figure 3 , the center line of the first through hole 151 coincides with the center line of the second through hole 171.

[0042] Optionally, the cross-section of the first through hole 151 along the axial direction may be in a polygonal, circular, elliptical, irregular, etc. Optionally, the cross-section of the first through hole 151 along the axial direction may be in a quadrilateral, hexagon, circular, octagonal, elliptical, etc., but is not limited thereto.

[0043] Optionally, the cross-section of the second through hole 171 along the axial direction may be in a polygonal, circular, elliptical, irregular, etc. Optionally, the cross-section of the second through hole 171 along the axial direction may be in a quadrilateral, hexagon, circular, octagonal, elliptical, etc., but is not limited thereto.

[0044] Specifically, the first through hole 151 and the second through hole 171 improve the structure of the high-temperature air waves of the battery pack entering the accommodating cavity.

[0045] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , the radial dimension of the first through hole 151 is greater than the radial dimension of the second through hole 171 , or the radial dimension of the first through hole 151 is smaller than the radial dimension of the second through hole 171 .

[0046] Optionally, the cross-section of the first through hole 151 along the axial direction and the cross-section of the second through hole 171 along the axial direction are both circular, and the diameter of the first through hole 151 is greater than the diameter of the second through hole 171. Optionally, the cross-section of the first through hole 151 along the axial direction and the cross-section of the second through hole 171 along the axial direction are both circular, and the diameter of the first through hole 151 is smaller than the diameter of the second through hole 171.

[0047] Specifically, the above arrangement of the first through hole 151 and the second through hole 171 facilitates filling of solder.

[0048] Optionally, the cross-section of the first through hole 151 along the axial direction and the cross-section of the second through hole 171 along the axial direction are both circular, and the axis of the first through hole 151 coincides with the axis of the second through hole 171 .

[0049] Specifically, the above arrangement of the axis of the first through hole 151 and the axis of the second through hole 171 increases the speed of the high-temperature air wave discharge.

[0050] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , the distance between the edge of the first through hole 151 and the edge of the second through hole 171 is at least 2 mm.

[0051] Optionally, the distance between the edge of the first through hole 151 and the edge of the second through hole 171 may range from 2 mm, 3 mm to 5 mm, etc.

[0052] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The sum of the projection areas of the first through hole 151 and the second through hole 171 in a direction perpendicular to the thickness of the first plate 15 is not less than the projection area of ​​the explosion-proof valve of the battery assembly in a direction perpendicular to the thickness of the first plate 15 .

[0053] Optionally, the above arrangement can better isolate the air.

[0054] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , in a direction perpendicular to the thickness direction of the edge beam, a width of a region between the first through hole and the second through hole is greater than or equal to 2 mm.

[0055] Optionally, in a direction perpendicular to the thickness direction of the edge beam, the width of the area between the first through hole and the second through hole may be, but is not limited to, 2 mm, 3 mm, 4 mm, 5 mm, etc.

[0056] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The side beam 10 also includes a weld portion, which is arranged between the inner circumferential surface of the second through hole 171 and the inner circumferential surface of the first through hole 151. In a direction perpendicular to the thickness direction of the side beam 10, the width of the weld portion is equal to the distance between the edge of the first through hole 151 and the edge of the second through hole 171.

[0057] Specifically, the weld portion prevents gas from leaking from the gap between the first plate 15 and the reinforcing plate 17 and better isolates the air.

[0058] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The frame 11 also includes a first connecting plate 18 and a second connecting plate 19, which are spaced apart along the second direction, and the first connecting plate 18 and the second connecting plate 19 are both connected to the first plate 15, and the second direction intersects with the first direction.

[0059] Optionally, the shape of the first connecting plate 18 may be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the first connecting plate 18 may be, but is not limited to, quadrilateral, hexagon, circular, octagonal, elliptical, etc.

[0060] Optionally, the shape of the second connecting plate 19 may be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the second connecting plate 19 may be, but is not limited to, quadrilateral, hexagon, circular, octagonal, elliptical, etc.

[0061] Optionally, the connection method of the first plate 15 and the first connecting plate 18 can be laser penetration welding, ultrasonic welding, hot melt welding, laser welding and snap connection, etc. Optionally, the first plate 15 and the first connecting plate 18 are connected together by laser penetration welding, and the welding form of the first plate 15 and the first connecting plate 18 allows a variety of options for the shape of the first plate 15 and the shape of the first connecting plate 18, and the welding method is stable and has a high degree of reliability. Optionally, the connection method of the second connecting plate 19 and the first connecting plate 18 can be laser penetration welding, ultrasonic welding, hot melt welding, laser welding and snap connection, etc. Optionally, the second connecting plate 19 and the first connecting plate 18 are connected together by laser penetration welding, and the welding form of the second connecting plate 19 and the first connecting plate 18 allows a variety of options for the shape of the second connecting plate 19 and the shape of the first connecting plate 18, and the welding method is stable and has a high degree of reliability.

[0062] Specifically, the above arrangement improves the overall mode of the side beam 10 and improves the anti-extrusion capability of the exhaust passage 20 .

[0063] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The frame 11 also includes a first connecting rib 13 and a second connecting rib 14, which are spaced apart in the accommodating cavity and connected to the frame 11, and the first connecting rib 13 and the second connecting rib 14 separate the accommodating cavity to form an exhaust channel 20.

[0064] Optional, please refer to Figure 1 , Figure 2 and Figure 3 A first chamber 21 is enclosed between the first connecting rib 13 and the frame 11 , a second chamber 22 is enclosed between the second connecting rib 14 and the frame 11 , and the first chamber 21 and the second chamber 22 are arranged on both sides of the exhaust channel 20 .

[0065] Optionally, the first chamber 21 and the second chamber 22 are disposed on both sides of the exhaust passage 20 along the second direction.

[0066] Specifically, the above arrangement of the first chamber 21 and the second chamber 22 ensures the integrity of the exhaust passage 20 and improves the high temperature resistance performance.

[0067] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3The frame 11 also includes a second plate 16, which is spaced apart from the first plate 15 along the first direction. The second plate 16 is provided with an air outlet 12. One end of the first connecting rib 13 is connected to the reinforcing plate 17, and the other end is connected to the second plate 16. One end of the second connecting rib 14 is connected to the reinforcing plate 17, and the other end is connected to the second plate 16.

[0068] Optional, please refer to Figure 1 , Figure 2 and Figure 3 One end of the first connecting rib 13 is connected to the reinforcing plate 17, and the other end is connected to the second plate 16. One end of the second connecting rib 14 is connected to the reinforcing plate 17, and the other end is connected to the second plate 16. The reinforcing plate 17, the second plate 16, the first connecting rib 13 and the second connecting rib 14 enclose the exhaust channel 20.

[0069] Optionally, the first plate 15, the second plate 16 and the reinforcing plate 17 are parallel to each other. Optionally, the angle formed between the first plate 15 and the second plate 16 is in the range of 10 to 80 degrees. Optionally, the angle formed between the reinforcing plate 17 and the second plate 16 is in the range of 10 to 80 degrees.

[0070] Optionally, the shape of the first plate 15 may be a polygon, a circle, an ellipse, an irregular shape, etc. Optionally, the shape of the first plate 15 may be, but not limited to, a quadrilateral, a hexagon, a circle, an octagon, an ellipse, etc. Optionally, the shape of the second plate 16 may be, but not limited to, a quadrilateral, a hexagon, a circle, an octagon, an ellipse, etc. Optionally, the shape of the reinforcing plate 17 may be, but not limited to, a quadrilateral, a hexagon, a circle, an octagon, an ellipse, etc. Optionally, the shape of the reinforcing plate 17 may be, but not limited to, a quadrilateral, a hexagon, a circle, an octagon, an ellipse, etc.

[0071] Specifically, the provision of the second plate 16 improves the structure of the frame 11 .

[0072] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The frame 11, the first connecting rib 13 and the second connecting rib 14 are an integrated structure.

[0073] Optionally, the frame 11, the first connecting rib 13 and the second connecting rib 14 are formed by roll forming of a metal plate. Optionally, the frame 11, the first connecting rib 13 and the second connecting rib 14 can also be manufactured separately and then connected together. Optionally, the connection method of the frame 11 and the first connecting rib 13 can be laser penetration welding, ultrasonic welding, hot melt welding, laser welding and snap connection, etc. Optionally, the frame 11 and the first connecting rib 13 are connected together by laser penetration welding. During the welding process, it is necessary to achieve technical details of no pores and missing welds, and the position of the weld seam also needs to meet the airtightness requirements. The welding form of the frame 11 and the first connecting rib 13 allows the shape of the frame 11 and the shape of the first connecting rib 13 to have a variety of options, and the welding method is stable and reliable. Optionally, the connection method of the frame 11 and the second connecting rib 14 can be laser penetration welding, ultrasonic welding, hot melt welding, laser welding and snap connection, etc. Optionally, the frame 11 and the second connecting rib 14 are connected together by laser penetration welding. During the welding process, technical details such as no pores and missing welds need to be achieved, and the weld position also needs to meet the airtightness requirements. The welding form of the frame 11 and the second connecting rib 14 allows for a variety of options for the shape of the frame 11 and the shape of the second connecting rib 14, and the welding method provides a stable connection with a high degree of reliability.

[0074] Optionally, the connection positions between the frame 11 and the first connection rib 13 and the second connection rib 14 are all fully welded to prevent gas from escaping.

[0075] Specifically, the above-mentioned arrangement of the frame 11, the first connecting rib 13 and the second connecting rib 14 improves the stress curve of the entire side beam 10, obtains higher modal and mechanical properties, greatly improves the deformation of the side beam 10 caused by extrusion or collision impact of the battery pack, provides sufficient support and protection for the battery cell, and greatly ensures the integrity and high temperature resistance of the exhaust channel 20.

[0076] The utility model embodiment also provides a side beam 10 assembly, please refer to Figure 1 , Figure 2 and Figure 3 , including an explosion-proof valve, a guide cover and the side beam 10 as mentioned above, the explosion-proof valve cooperates with the air outlet 12, and the guide cover surrounds the explosion-proof valve.

[0077] Optionally, the side beam 10 assembly also includes an explosion-proof valve mounting base, the explosion-proof valve mounting base extends into the air outlet 12 and cooperates with the air outlet 12, the explosion-proof valve cooperates with the explosion-proof valve mounting base, the explosion-proof valve mounting base weld position is fully welded by arc welding, and the weld position needs to meet the air tightness requirements. Optionally, a matching hole 23 is opened on the side beam 10 near the air outlet 12, and the side beam 10 assembly also includes a shroud mounting piece, the shroud mounting piece uses a closed rivet nut with a sealing ring, and the air tightness requirements of the rivet nut position are ensured. Specifically, when the battery pack has a thermal runaway and generates an air wave to be discharged, the explosion-proof valve opens, and the placement of the shroud can well guide the direction of the high-temperature air wave, which greatly avoids the failure of the components of the vehicle related to the explosion-proof valve due to the influence of the air wave.

[0078] Optionally, the side beam 10 assembly further includes an end cover, which is tightly matched with the exhaust passage 20 from the side of the side beam 10 to close the exhaust passage 20. Optionally, there are multiple end covers. Optionally, the end cover is welded to the exhaust passage 20 on all sides, and the weld position is fully welded using laser wire welding or arc welding, and the weld position meets the airtightness requirement.

[0079] The utility model embodiment also provides a side beam 10 assembly, please refer to Figure 1 , Figure 2 and Figure 3 , including an explosion-proof valve and the aforementioned side beam 10 , the explosion-proof valve cooperates with the air outlet 12 .

[0080] Specifically, the provision of the explosion-proof valve and the air outlet 12 improves the safety of the battery pack in discharging high-temperature air waves.

[0081] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 At least a portion of the area where the first plate 15 and the reinforcing plate 17 are connected is fully welded using laser penetration welding.

[0082] Optionally, the joint between the reinforcing plate 17 and the first plate 15 is fully welded to prevent gas from escaping from between the reinforcing plate 17 and the first plate 15 .

[0083] Optionally, the reinforcing plate 17 and the first plate 15 may be connected by ultrasonic welding, hot melt welding, laser welding, snap connection, etc. Optionally, the reinforcing plate 17 and the first plate 15 are connected together by laser penetration welding. The welding form of the reinforcing plate 17 and the first plate 15 allows for a variety of choices for the shape of the reinforcing plate 17 and the shape of the first plate 15, and the welding method is stable and highly reliable.

[0084] Specifically, the arrangement of the first plate 15 , the second plate 16 and the reinforcing plate 17 improves the structure of the exhaust passage 20 .

[0085] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , including an explosion-proof valve and the aforementioned side beam 10 , the explosion-proof valve is arranged at the air outlet 12 of the frame 11 .

[0086] Specifically, in the event of a fire or abnormal situation, the explosion-proof valve is helpful in protecting electrical equipment.

[0087] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The side beam 10 assembly further includes a deflector, which surrounds the explosion-proof valve and has an opening, and the opening faces the ground.

[0088] Specifically, the air deflector prevents the battery pack from emitting high-temperature air waves that damage other parts.

[0089] The utility model also provides a tray, please refer to Figure 1 , Figure 2 and Figure 3 , including the side beam 10 assembly as mentioned above, the side beam 10 assembly is used to form a receiving cavity, and the receiving cavity is connected with the accommodating cavity of the side beam 10 assembly through the through hole of the side beam 10 assembly.

[0090] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , including a first side beam 10 assembly, a second side beam 10 assembly and a supporting beam. The first side beam 10 assembly and the second side beam 10 assembly are both the side beam 10 assemblies as described above. The first side beam 10 assembly and the second side beam 10 assembly are arranged opposite to each other. One end of the supporting beam is connected to the first side beam 10 assembly, and the other end is connected to the second side beam 10 assembly to separate the accommodating cavity into a first accommodating cavity and a second accommodating cavity. The first accommodating cavity and the second accommodating cavity are respectively used to accommodate battery assemblies.

[0091] Optionally, the first side beam 10 component and the second side beam 10 component are both provided with at least one first through hole 151 and at least one second through hole 171, the first through hole 151 is connected with the second through hole 171, the first through hole 151 is also connected with the receiving cavity, and the second through hole 171 is connected with the receiving cavity.

[0092] Specifically, the above-mentioned arrangement of the support beam improves the speed at which the battery pack discharges high-temperature air waves and the structural strength of the tray.

[0093] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3The through hole of the first side beam 10 component is arranged on a side of the first side beam 10 component for forming a first receiving cavity, and the through hole of the second side beam 10 component is arranged on a side of the second side beam 10 component for forming a second receiving cavity.

[0094] The present utility model also provides a battery assembly, please refer to Figure 1 , Figure 2 and Figure 3 , including a battery and the aforementioned tray, the tray is connected to the battery, and the receiving cavity receives the battery.

[0095] Optionally, the battery assembly includes a battery pack and a battery module.

[0096] Specifically, when thermal runaway occurs in the battery, the gas in the battery enters the exhaust channel 20 through the first through hole 151 and the second through hole 171, and is then quickly discharged through the exhaust hole of the explosion-proof valve, thereby improving the safety performance of the electrical equipment.

[0097] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 A plurality of batteries are arranged along a first direction to form a battery pack, a pressure relief mechanism is provided at one end of the battery along a second direction, and the pressure relief mechanisms of two adjacent batteries are arranged alternately so that both ends of the battery pack along the second direction have a plurality of pressure relief mechanisms, and the first direction intersects with the second direction; the through hole is opposite to the plurality of pressure relief mechanisms of the battery pack along the first direction.

[0098] Specifically, the pressure relief mechanism refers to the explosion-proof valve of the battery cell. The gas is exhausted from the explosion-proof valve and discharged from both sides. The through hole and the exhaust channel are opposite to each other, which can shorten the exhaust distance and increase the exhaust speed. Preferably, the two are opposite to each other.

[0099] An embodiment of the utility model further provides an electrical device, comprising the battery assembly as described above.

[0100] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship of the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0101] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the present invention still fall within the scope covered by the present invention.

Claims

1. A side beam, characterized in that: The side beam is used for a tray of a battery assembly, and includes: A frame, wherein a receiving cavity is formed inside the frame; The frame includes a first plate and a reinforcing plate connected to each other. In the thickness direction of the first plate and the reinforcing plate, the first plate and the reinforcing plate at least partially overlap. The frame is provided with a through hole, which passes through the first plate and the reinforcing plate and is connected to the accommodating cavity.

2. The side beam according to claim 1, characterized in that: The first plate is provided with a first through hole, the reinforcing plate is provided with a second through hole, and the first through hole is communicated with the accommodating cavity through the second through hole.

3. The side beam according to claim 2, characterized in that: The radial size of the first through hole is larger than the radial size of the second through hole, or the radial size of the first through hole is smaller than the radial size of the second through hole.

4. The side beam according to claim 2, characterized in that: The distance between the edge of the first through hole and the edge of the second through hole is at least 2 mm.

5. The side beam according to claim 2, characterized in that: The sum of the projected areas of the first through hole and the second through hole in a direction perpendicular to the thickness of the first plate is not less than the projected area of ​​the explosion-proof valve of the battery assembly in a direction perpendicular to the thickness of the first plate.

6. The side beam according to claim 2, characterized in that: In a direction perpendicular to the thickness direction of the edge beam, a width of a region between the first through hole and the second through hole is greater than or equal to 2 mm.

7. The side beam according to claim 2, characterized in that: The side beam also includes a weld portion, which is arranged between the inner circumferential surface of the second through hole and the inner circumferential surface of the first through hole. In a direction perpendicular to the thickness direction of the side beam, the width of the weld portion is equal to the distance between the edge of the first through hole and the edge of the second through hole.

8. The side beam according to claim 2, characterized in that: The battery assembly includes a plurality of batteries, and the plurality of batteries are arranged and extended along a first direction. The frame also includes a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are spaced apart along a second direction. The first connecting plate and the second connecting plate are both connected to the first plate, and the second direction intersects with the first direction.

9. The side beam according to claim 1, characterized in that: The frame further includes a first connecting rib and a second connecting rib, the first connecting rib and the second connecting rib are arranged in the accommodating cavity at intervals and connected to the frame, and the first connecting rib and the second connecting rib separate the accommodating cavity to form an exhaust channel.

10. The side beam according to claim 9, characterized in that: The frame also includes a second plate, which is spaced apart from the first plate along a first direction, and the second plate is provided with an air outlet, one end of the first connecting rib is connected to the reinforcing plate, and the other end is connected to the second plate, and one end of the second connecting rib is connected to the reinforcing plate, and the other end is connected to the second plate.

11. The side beam according to claim 9, characterized in that: The frame, the first connecting ribs and the second connecting ribs are an integrated structure.

12. The side beam according to claim 9, characterized in that: At least a portion of the area where the first plate and the reinforcing plate are connected is fully welded by laser penetration welding.

13. A side beam assembly, characterized in that: It comprises an explosion-proof valve and a side beam as claimed in any one of claims 1 to 12, wherein the explosion-proof valve is arranged at an air outlet of the frame.

14. The side beam assembly according to claim 13, characterized in that: The side beam assembly further includes a deflector, which surrounds the explosion-proof valve and has an opening, wherein the opening faces the ground.

15. A tray having a receiving cavity for receiving the battery assembly, characterized in that: It comprises a side beam assembly as described in any one of claims 13-14, wherein the side beam assembly is used to form the receiving cavity, and the receiving cavity is connected with the accommodating cavity of the side beam assembly through the through hole of the side beam assembly.

16. The pallet according to claim 15, characterized in that It includes a first side beam assembly, a second side beam assembly and a support beam, the first side beam assembly and the second side beam assembly are both the side beam assemblies as described in any one of claims 13 to 14, the first side beam assembly and the second side beam assembly are arranged relative to each other, one end of the support beam is connected to the first side beam assembly, and the other end is connected to the second side beam assembly to separate the accommodating cavity into a first accommodating cavity and a second accommodating cavity, the first accommodating cavity and the second accommodating cavity are respectively used to accommodate the battery assembly.

17. The pallet according to claim 16, characterized in that The through hole of the first side beam component is arranged on a side of the first side beam component for forming the first receiving cavity, and the through hole of the second side beam component is arranged on a side of the second side beam component for forming the second receiving cavity.

18. A battery assembly, characterized in that: It comprises a battery and a tray as claimed in any one of claims 15 to 17, wherein the tray is connected to the battery, and the receiving cavity receives the battery.

19. The battery assembly according to claim 18, characterized in that: A plurality of the batteries are arranged along a first direction to form a battery pack, a pressure relief mechanism is provided at one end of the battery along a second direction, and the pressure relief mechanisms of two adjacent batteries are arranged alternately, so that both ends of the battery pack along the second direction have a plurality of pressure relief mechanisms, and the first direction intersects with the second direction; The through hole is opposite to the plurality of pressure relief mechanisms of the battery pack along the first direction.

20. An electrical equipment, characterized in that: Comprising a battery assembly as claimed in any one of claims 18 to 19.

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