Battery tray, battery pack and electric equipment

Abstract

The utility model discloses a battery tray, a battery pack and electric equipment, the battery tray comprises a tray main body and a support cross beam, an accommodating cavity is formed in the tray main body, and the tray main body comprises first edge beams which are oppositely arranged in a first direction; the supporting cross beam is located in the containing cavity, and the two ends, in the first direction, of the supporting cross beam are connected with the first edge beams on the corresponding sides correspondingly. The connecting support is arranged in the containing cavity, and the connecting support is connected with the supporting cross beam and the first edge beam. Therefore, by arranging the connecting bracket, the supporting cross beam and the first side beam can be connected, and the connecting strength between the supporting cross beam and the first side beam can be increased, so that the battery tray is not easy to cause structural instability when encountering side collision, and the thermal runaway risk of the battery pack is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially a kind of battery tray, battery pack and electric equipment. BACKGROUND

[0002] In the related art, the crossbeam and the side beam of the battery tray are connected by arc welding. When the battery pack is subjected to side collision, the arc welding will be broken first due to poor strength, and then the side structure of the battery pack will be unstable and press the battery cell, which has the risk of thermal runaway. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery tray, which can increase the connection strength between the supporting crossbeam and the first side beam, so that the battery tray is not prone to structural instability when subjected to side collision, and is beneficial to reducing the risk of thermal runaway of the battery pack.

[0004] According to the battery tray of the utility model embodiment, the supporting crossbeam and the first side beam are connected by the connecting bracket, the connection strength between the supporting crossbeam and the first side beam can be increased, so that the battery tray is not prone to structural instability when subjected to side collision, and is beneficial to reducing the risk of thermal runaway of the battery pack.

[0005] According to the battery tray of the utility model embodiment, the supporting crossbeam and the first side beam are connected by the connecting bracket, the connection strength between the supporting crossbeam and the first side beam can be increased, so that the battery tray is not prone to structural instability when subjected to side collision, and is beneficial to reducing the risk of thermal runaway of the battery pack.

[0006] According to the battery tray of some embodiments of the utility model, the connecting bracket includes a first connecting part and a second connecting part connected together, the first connecting part is supported on the side wall of the supporting crossbeam in the second direction and connected with the supporting crossbeam through a first fixing part, the second connecting part is supported on the side wall of the first side beam adjacent to the accommodating cavity, and connected with the first side beam through a second fixing part, and the first direction intersects with the second direction.

[0007] According to the battery tray of some embodiments of the utility model, the first fixing part and / or the second fixing part are screws and / or bolts.

[0008] According to the battery tray of some embodiments of the utility model, the first connecting part and the second connecting part are connected into an integral structure by a transition plate.

[0009] According to the battery tray of some embodiments of the utility model, the connecting support further includes connecting ribs, the connecting ribs are connected to the side of the first connecting part away from the support cross beam and the side of the second connecting part away from the first edge beam respectively.

[0010] According to the battery tray of some embodiments of the utility model, the connecting ribs are multiple, the multiple connecting ribs are arranged at intervals along the height direction of the tray body, the first direction, the second direction and the height direction of the tray body intersect each other in pairs.

[0011] According to the battery tray of some embodiments of the utility model, the first connecting part is provided with a first connecting hole, the first connecting hole is arranged between two adjacent connecting ribs, and the first fixing member is arranged in the first connecting hole;And / or, the second connecting part is provided with a second connecting hole, the second connecting hole is arranged between two adjacent connecting ribs, and the second fixing member is arranged in the second connecting hole.

[0012] According to the battery tray of some embodiments of the utility model, the connecting support is connected to the end of the support cross beam.

[0013] According to the battery tray of some embodiments of the utility model, the same end of the support cross beam is provided with multiple connecting supports.

[0014] According to the battery tray of some embodiments of the utility model, the same end of the support cross beam is provided with multiple connecting supports.

[0015] According to the battery tray of some embodiments of the utility model, at least two connecting supports located on the opposite sides of the support cross beam along the second direction are oppositely arranged, and the oppositely arranged connecting supports are connected through the first fixing member penetrating the support cross beam.

[0016] According to the battery tray of some embodiments of the utility model, the support cross beam and the first edge beam are welded.

[0017] According to the battery tray of some embodiments of the utility model, the first edge beam includes a first plate extending along the height direction of the tray body and a second plate extending into the accommodating cavity along the first direction, the first plate and the second plate are integrally connected, the end of the support cross beam is located on the inner side of the first plate and the bottom is supported on the second plate, the support cross beam is connected with the first plate and / or the second plate, the connecting support is connected with the first plate, and the first direction intersects with the height direction of the tray body.

[0018] The utility model also provides a battery pack.

[0019] The battery pack according to the utility model embodiment comprises a battery module and the battery tray according to any one of the above-mentioned embodiments, and the battery module is arranged in the accommodating cavity of the battery tray.

[0020] The battery pack according to the utility model embodiment can connect the end of the supporting cross beam and the first edge beam through the connecting support, increase the connecting strength between the supporting cross beam and the first edge beam, prevent the battery tray from being structurally unstable when the battery pack is subjected to side collision, reduce the risk of thermal runaway of the battery pack, and improve the safety of the battery pack.

[0021] The utility model also provides a power consumption equipment.

[0022] The power consumption equipment according to the utility model embodiment comprises the battery pack according to any one of the above-mentioned embodiments.

[0023] The battery pack according to the utility model embodiment is not prone to structural instability when subjected to side collision, has a small risk of thermal runaway, and is beneficial to guarantee the reliability of the power consumption equipment.

[0024] The additional aspects and advantages of the utility model will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above-mentioned and / or additional aspects and advantages of the utility model will become obvious and easy to understand from the description of embodiments in combination with the following drawings, in which:

[0026] Figure 1 It is a schematic view of the battery tray according to the utility model embodiment;

[0027] Figure 2 It is Figure 1 It is a local enlarged view of A in the figure;

[0028] Figure 3 It is a schematic view of the connecting support according to the utility model embodiment;

[0029] Figure 4 It is a schematic view of the connecting support according to the utility model embodiment from another perspective.

[0030] REFERENCE NUMERALS:

[0031] Battery tray 100, first direction F1, second direction F2, height direction F3 of tray main body,

[0032] Tray main body 1, accommodating cavity 11, first edge beam 12, first plate 121, second plate 122,

[0033] supporting crossbeam 2, connecting support 3, first connecting part 31, first connecting hole 311, second connecting part 32, second connecting hole 321, transition plate 33, connecting rib 34, connecting plate 4,

[0034] first fixing part 5, second fixing part 6, bottom plate 7. DETAILED DESCRIPTION

[0035] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the term "a plurality of" means two or more.

[0037] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Below, with reference to the drawings, the battery tray 100 according to the embodiments of the present application is described.

[0039] As Figures 1-4As shown, the battery tray 100 according to the embodiment of the utility model, including: tray main body 1, support crossbeam 2 and connecting support 3, form having containing cavity 11 in tray main body 1, tray main body 1 includes the first side beam 12 that is relatively arranged in the first direction F1;Support crossbeam 2 is located in containing cavity 11, and the both ends of support crossbeam 2 are connected with the first side beam 12 of corresponding side along the first direction F1 respectively;Connecting support 3 is arranged in containing cavity 11, and connecting support 3 is connected with the end of support crossbeam 2 and the first side beam 12 respectively.

[0040] Therefore, the connection strength between the support crossbeam 2 and the first side beam 12 can be increased, so that the battery tray 100 is not prone to structural instability when subjected to side impact, and the risk of thermal runaway of the battery pack is reduced.

[0041] Firstly, as shown in the drawings, Figures 1-2 The battery pack includes a battery module and a battery tray 100, and the battery tray 100 includes a tray main body 1 and a support crossbeam 2. The tray main body 1 has a containing cavity 11 formed therein, and the containing cavity 11 can be used to accommodate the battery module. The tray main body 1 includes two first side beams 12, and the two first side beams 12 are arranged opposite to each other in the first direction F1 (refer to the left-right direction shown in the drawings). The support crossbeam 2 is located in the containing cavity 11, and the support crossbeam 2 extends along the first direction F1 and is connected to the first side beam 12 on the corresponding side at both ends, so that the support crossbeam 2 can support the first side beam 12. Figure 1

[0042] For example, the connecting support 3 can be welded to the support crossbeam 2 and the first side beam 12 respectively; or the connecting support 3 can be connected to the support crossbeam 2 through a first fixing member 5, and then the connecting support 3 and the first side beam 12 are connected through a second fixing member 6, which is not limited by the utility model. Therefore, the connection strength between the support crossbeam 2 and the first side beam 12 can be increased, so that the battery tray 100 is not prone to structural instability when subjected to side impact, and the risk of thermal runaway of the battery pack is eliminated.

[0043] ​It should be noted that simulation verification shows that the overall first-order mode of the battery pack without the connecting bracket 3 is 48.5Hz, and the weld stress is 22MPa. The overall first-order mode of the battery pack with the connecting bracket 3 is 48.9Hz, and the weld stress is 14.1MPa, with the mode increased by 0.4Hz and the vibration stress reduced by 7.9MPa. The battery pack without the connecting bracket 3 cracked and separated in the side impact condition, the side structure became unstable, the support beam 2 extended beyond the sealing surface of the battery pack, and the frontal intrusion of the battery cell was 20.2mm. The battery pack with the connecting bracket 3 maintained a good connection between the support beam 2 and the first side beam 12 in the side impact condition, and the frontal intrusion of the battery cell was 7.7mm.

[0044] According to the battery tray 100 of the embodiment of the present invention, the supporting crossbeam 2 and the first side beam 12 can be connected by providing a connecting bracket 3, which can increase the connection strength between the supporting crossbeam 2 and the first side beam 12, so that the battery tray 100 is not prone to structural instability when encountering a side collision, which is beneficial to reducing the risk of thermal runaway of the battery pack.

[0045] In some embodiments of the present invention, the connecting bracket 3 includes a first connecting portion 31 and a second connecting portion 32 connected to each other. The first connecting portion 31 is supported on the side wall of the supporting beam 2 in the second direction F2 and is connected to the supporting beam 2 through a first fixing member 5. The second connecting portion 32 is supported on the side wall of the first side beam 12 adjacent to the accommodating cavity 11 and is connected to the first side beam 12 through a second fixing member 6. The first direction F1 intersects the second direction F2. For example, the first direction F1 can be set to Figure 1 The left and right directions shown, and the second direction F2 is set to Figure 1 Front-to-back orientation shown.

[0046] For example, refer to Figures 1-3 As shown, the first side beam 12 is adjacent to the side wall of the accommodating cavity 11 and at least one side of the supporting crossbeam 2 along the second direction F2 to define an installation space, and the connecting bracket 3 is disposed within the installation space. The connecting bracket 3 includes a first connecting portion 31 and a second connecting portion 32, which are bent and connected to form a quasi-L shape. The first connecting portion 31 is supported on the side wall of the supporting crossbeam 2 in the second direction F2. The first fixing member 5 passes through the first connecting portion 31 and is connected to the supporting crossbeam 2 to connect the first connecting portion 31 and the supporting crossbeam 2. The second connecting portion 32 is supported on the side wall of the first side beam 12 adjacent to the accommodating cavity 11. The second fixing member 6 passes through the second connecting portion 32 and is connected to the first side beam 12 to connect the second connecting portion 32 and the first side beam 12.

[0047] Through the above setting, the installation difficulty of the connecting support 3 can be reduced, and the practicability of the battery tray 100 is improved. In addition, compared with fixing the connecting support 3 by welding, the connection through the fixing piece can avoid stress concentration and improve the overall modal of the battery tray 100.

[0048] In some embodiments of the present application, as shown in Figure 2 The first fixing piece 5 and / or the second fixing piece 6 can be a screw and / or a bolt. Specifically, the first fixing piece 5 and the second fixing piece 6 can both be configured as a screw; or the first fixing piece 5 and the second fixing piece 6 can both be configured as a bolt; or one of the first fixing piece 5 and the second fixing piece 6 can be configured as a screw, and the other can be configured as a bolt, which is not limited in the present application.

[0049] Of course, either of the first fixing piece 5 and the second fixing piece 6 can be configured as a rivet, which will not be described here.

[0050] Through the above setting, the installation of the connecting support 3 is convenient, and the connection stability of the connecting support 3 and the first side beam 12 and the support cross beam 2 can be ensured, which is beneficial to improve the structural strength of the battery tray 100.

[0051] In some embodiments of the present application, as shown in Figure 4 The first connecting portion 31 and the second connecting portion 32 can be connected as an integrated structure through the transition plate 33. Through the above setting, the connection between the first connecting portion 31 and the second connecting portion 32 is smoother, which is beneficial to improve the structural stability of the connecting support 3.

[0052] In addition, when the support cross beam 2 and the first side beam 12 are connected by welding, the connecting support 3 can avoid the welding seam of the support cross beam 2 and the first side beam 12 through the transition plate 33, which improves the design rationality of the battery tray 100.

[0053] In some embodiments of the present application, the connecting support 3 can be integrally formed, such as integrally cast. Thus, the processing difficulty of the connecting support 3 can be reduced, and the structural strength of the connecting support 3 is improved. In addition, since the first connecting portion 31 and the second connecting portion 32 are connected through the transition plate 33, the connecting support 3 is more easily demoulded, which greatly reduces the forming difficulty of the connecting support 3.

[0054] In some embodiments of the present application, as shown in Figure 3As shown, the connecting bracket 3 further comprises a connecting rib 34 connected to the first connecting portion 31 away from one side of the support cross beam 2 and the second connecting portion 32 away from one side of the first edge beam 12, respectively, and the connecting rib 34 is used to support the first connecting portion 31 and the second connecting portion 32. Therefore, the structural stability of the connecting bracket 3 can be improved, thereby ensuring the connection stability of the first edge beam 12 and the support cross beam 2.

[0055] In some embodiments of the utility model, as shown in Figure 3 As shown, the connecting rib 34 can be multiple, and the multiple connecting ribs 34 are arranged in the height direction F3 of the tray body 1 at intervals, and the first direction F1 and the second direction F2 intersect with each other and the height direction F3 of the tray body 1. Exemplarily, the first direction F1 can be set as the left-right direction as shown in Figure 1 The second direction F2 is set as the front-rear direction as shown in Figure 1 And the height direction F3 of the tray body 1 is set as the up-down direction. Therefore, the structural strength of the connecting bracket 3 can be increased.

[0056] In some embodiments of the utility model, the connecting rib 34 can be at least two, and the at least two connecting ribs 34 are arranged in the height direction F3 of the tray body 1 at intervals, the uppermost connecting rib 34 is used to connect the top end of the first connecting portion 31 and the top end of the second connecting portion 32, and the lowermost connecting rib 34 is used to connect the bottom end of the first connecting portion 31 and the bottom end of the second connecting portion 32. Therefore, the structure of the connecting bracket 3 can be optimized.

[0057] In some embodiments of the utility model, as shown in Figure 3 As shown, the first connecting portion 31 is provided with a first connecting hole 311, the first connecting hole 311 is arranged between the adjacent two connecting ribs 34, and the first fixing member 5 is arranged in the first connecting hole 311. The first fixing member 5 arranged in the first connecting hole 311 is connected with the support cross beam 2 to fix the first connecting portion 31 on the support cross beam 2.

[0058] It can be understood that by arranging the first connecting hole 311 between the adjacent two connecting ribs 34, the connecting rib 34 can support the first fixing member 5 from both sides, and the connection stability between the connecting bracket 3 and the support cross beam 2 can be improved, thereby improving the reliability of the battery tray 100.

[0059] In some embodiments of the utility model, as shown in Figure 3As shown, the second connecting part 32 is provided with a second connecting hole 321, the second connecting hole 321 is arranged between two adjacent connecting ribs 34, and the second fixing member 6 is arranged in the second connecting hole 321, and the second fixing member 6 arranged in the second connecting hole 321 is connected with the first edge beam 12, so as to fix the second connecting part 32 on the first edge beam 12.

[0060] It can be understood that, by arranging the second connecting hole 321 between the two adjacent connecting ribs 34, the connecting rib 34 can support the second fixing member 6 from both sides, which can improve the connection stability between the connecting support 3 and the supporting cross beam 2, thereby improving the reliability of the battery tray 100.

[0061] In some embodiments of the utility model, as shown in Figure 1 The connecting support 3 is connected to the end of the supporting cross beam 2. Thus, the space occupation of the connecting support 3 in the accommodating cavity 11 can be reduced, which is beneficial to the arrangement of the battery module.

[0062] In some embodiments of the utility model, as shown in Figure 2 The same end of the supporting cross beam 2 is provided with a plurality of connecting supports 3. Exemplarily, at least one connecting support 3 can be arranged on both sides of the end of the supporting cross beam 2 along the second direction F2; or a plurality of connecting supports 3 can be arranged on at least one side of the end of the supporting cross beam 2 along the second direction F2, and the plurality of connecting supports 3 on the same side are arranged in sequence along the up-down direction.

[0063] It can be understood that, by connecting the first edge beam 12 and the supporting cross beam 2 through the plurality of connecting supports 3, the connection stability between the first edge beam 12 and the supporting cross beam 2 can be improved, thereby improving the reliability of the tray body 1.

[0064] In some embodiments of the utility model, as shown in Figures 2-3 The same end of the supporting cross beam 2 is provided with a plurality of connecting supports 3. Exemplarily, at least one connecting support 3 can be arranged on both sides of the end of the supporting cross beam 2 along the second direction F2; or a plurality of connecting supports 3 can be arranged on at least one side of the end of the supporting cross beam 2 along the second direction F2, and the plurality of connecting supports 3 on the same side are arranged in sequence along the up-down direction. Figure 1 As shown, the first direction F1 is the left-right direction, and the second direction F2 is the front-rear direction. Figure 1 As shown, the first direction F1 is the left-right direction, and the second direction F2 is the front-rear direction.

[0065] It can be understood that by arranging the connecting brackets 3 on the opposite sides of the same end of the support cross beam 2 in the second direction F2, the connecting brackets 3 can support the support cross beam 2 from the opposite sides of the support cross beam 2 in the second direction F2, so that the structure of the battery tray 100 is more uniform, and the structural stability of the battery tray 100 is improved. In addition, by arranging the connecting brackets 3 on the opposite sides of the support cross beam 2 in the second direction F2 to be connected by the connecting plate 4, the positioning and installation of multiple connecting brackets 3 can be completed by a single action, the installation difficulty of the connecting brackets 3 is reduced, and the installation precision of the connecting brackets 3 can be improved.

[0066] In some embodiments of the utility model, as shown in Figure 2 and Figure 4 At least two connecting brackets 3 located on the opposite sides of the support cross beam 2 in the second direction F2 are oppositely arranged, and the oppositely arranged connecting brackets 3 are connected by the first fixing piece 5 penetrating the support cross beam 2. That is, the first fixing piece 5 can penetrate the first connecting part 31 of the connecting bracket 3, the support cross beam 2 and be connected with the first connecting part 31 of the opposite connecting bracket 3, so as to fix the two connecting brackets 3 on the support cross beam 2 together.

[0067] Through the above arrangement, the connecting bracket 3 and the support cross beam 2 can be more easily positioned and installed, the installation difficulty of the connecting bracket 3 is reduced, the number of first fixing pieces 5 can be reduced, the structure of the battery tray 100 is simplified, and the practicability of the battery tray 100 is improved.

[0068] In some embodiments of the utility model, the support cross beam 2 is welded to the first edge beam 12. Therefore, the installation stability of the support cross beam 2 can be improved, and the structural stability of the battery tray 100 is improved.

[0069] In some embodiments of the utility model, the first edge beam 12 includes a first plate 121 extending in the height direction F3 of the tray body 1 and a second plate 122 extending into the accommodating cavity 11 in the first direction F1, the first plate 121 is integrally connected with the second plate 122, the end of the support cross beam 2 abuts the inner side of the first plate 121 and is supported on the second plate 122, the support cross beam 2 is connected with the first plate 121 and / or the second plate 122, the connecting bracket 3 is connected with the first plate 121, and the first direction F1 intersects with the height direction F3 of the tray body 1.

[0070] For example, refer to Figure 2As shown, the first side beam 12 comprises a first plate 121 and a second plate 122, the first plate 121 is arranged to extend along the height direction F3 of the tray body 1, and the second plate 122 is arranged to extend along the first direction F1 into the accommodating cavity 11, and the end of the second plate 122 is connected to the lower end of the first plate 121, so that the second plate 122 is integrally connected with the first plate 121. Exemplarily, the height direction F3 of the tray body 1 can be set as Figure 1 As shown in the up-down direction, and the first direction F1 is set as Figure 1 As shown in the left-right direction.

[0071] The end of the support cross beam 2 abuts against the inner side of the first plate 121 and is supported on the second plate 122, the support cross beam 2 is used to be connected with the first plate 121 and / or the second plate 122, and the connecting bracket 3 can connect the first side beam 12 with the first plate 121. Specifically, the support cross beam 2 can be connected with the first plate 121, or the support cross beam 2 can be connected with the second plate 122, or the support cross beam 2 can be connected with the first plate 121 and the second plate 122 respectively, and the utility model does not limit this.

[0072] Through the above arrangement, the connection strength between the first side beam 12 and the support cross beam 2 can be ensured, so that the reliability of the battery tray 100 is improved.

[0073] In some embodiments of the utility model, as Figure 2 As shown, the inner wall of the first plate 121 and the upper wall of the second plate 122 are connected with a reinforcing plate, the reinforcing plate is inclined to extend downward and inward along the first direction F1, the reinforcing plate is used to enhance the structural strength of the first side beam 12, the reinforcing plate is provided with a avoiding gap, and the support cross beam 2 is supported on the first plate 121 and the second plate 122 through the avoiding gap. Therefore, the overall reliability of the battery tray 100 can be improved.

[0074] In some embodiments of the utility model, as Figures 1-2 As shown, the battery tray 100 of the utility model embodiment further comprises a bottom plate 7, the bottom plate 7 is connected with the tray body 1 by welding and is located at the bottom of the tray body 1, the bottom plate 7 is used to limit the cooperation with the support cross beam 2 to support the support cross beam 2. Therefore, the structural stability of the battery tray 100 can be improved.

[0075] It should be noted that the bottom plate 7 can be constructed as a cold plate, so that the bottom plate 7 can cool the battery module in the accommodating cavity 11.

[0076] The utility model further provides a battery pack.

[0077] According to the battery pack of the utility model embodiment, comprising: a battery module and the battery tray 100 of any one of the above embodiments, the battery module is arranged in the accommodating cavity 11 of the battery tray 100.

[0078] According to the battery pack of the embodiment of the utility model, the end of the support cross beam 2 and the first side beam 12 are connected through the connecting support 3, the connecting strength between the support cross beam 2 and the first side beam 12 is increased, the battery tray 100 is not prone to structural instability when suffering from side collision, the risk of thermal runaway of the battery pack is reduced, and the safety of the battery pack is improved.

[0079] The utility model further provides a kind of electric equipment.

[0080] According to the electric equipment of the embodiment of the utility model, the battery pack of any one of the above embodiments is included.

[0081] According to the electric equipment of the embodiment of the utility model, the battery pack is not prone to structural instability when suffering from side collision, the risk of thermal runaway is small, and the reliability of the electric equipment is guaranteed.

[0082] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A battery tray (100), characterized in that: include: A pallet body (1), wherein a receiving cavity (11) is formed in the pallet body (1), and the pallet body (1) includes first side beams (12) arranged opposite to each other in a first direction (F1); a supporting crossbeam (2), the supporting crossbeam (2) being located in the accommodating cavity (11), and the two ends of the supporting crossbeam (2) along the first direction (F1) being respectively connected to the first side beam (12) on the corresponding side; A connecting bracket (3) is arranged in the accommodating cavity (11), and the connecting bracket (3) is respectively connected to the supporting crossbeam (2) and the first side beam (12).

2. The battery tray (100) according to claim 1, characterized in that The connecting bracket (3) comprises a first connecting portion (31) and a second connecting portion (32) connected to each other, wherein the first connecting portion (31) is supported on the side wall of the supporting beam (2) in the second direction (F2) and is connected to the supporting beam (2) via a first fixing member (5), and the second connecting portion (32) is supported on the side wall of the first side beam (12) adjacent to the accommodating cavity (11) and is connected to the first side beam (12) via a second fixing member (6), and the first direction (F1) intersects with the second direction (F2).

3. The battery tray (100) according to claim 2, characterized in that: The first fixing member (5) and / or the second fixing member (6) are screws and / or bolts.

4. The battery tray (100) according to claim 2, characterized in that: The first connecting portion (31) and the second connecting portion (32) are connected to form an integral structure via a transition plate (33).

5. The battery tray (100) according to claim 2, characterized in that: The connecting bracket (3) further comprises connecting ribs (34), the connecting ribs (34) being respectively connected to a side of the first connecting portion (31) facing away from the supporting crossbeam (2) and a side of the second connecting portion (32) facing away from the first side beam (12).

6. The battery tray (100) according to claim 5, characterized in that: There are a plurality of connecting ribs (34), and the plurality of connecting ribs (34) are spaced apart and arranged along the height direction (F3) of the pallet body (1), and the first direction (F1) and the second direction (F2) intersect with the height direction (F3) of the pallet body (1) in pairs.

7. The battery tray (100) according to claim 6, characterized in that: The first connecting portion (31) is provided with a first connecting hole (311), the first connecting hole (311) is provided between two adjacent connecting ribs (34), and the first fixing member (5) is passed through the first connecting hole (311); and / or, The second connecting portion (32) is provided with a second connecting hole (321), the second connecting hole (321) is provided between two adjacent connecting ribs (34), and the second fixing member (6) is passed through the second connecting hole (321).

8. The battery tray (100) according to claim 1, characterized in that: The connecting bracket (3) is connected to the end of the supporting beam (2).

9. The battery tray (100) according to claim 8, characterized in that: A plurality of connecting brackets (3) are provided at the same end of the supporting crossbeam (2).

10. The battery tray (100) according to claim 9, characterized in that: The connecting brackets (3) are provided on opposite sides of the same end of the supporting crossbeam (2) along the second direction (F2); the connecting brackets (3) located on opposite sides of the supporting crossbeam (2) along the second direction (F2) are connected via a connecting plate (4); and the first direction (F1) and the second direction (F2) intersect.

11. The battery tray (100) according to claim 10, characterized in that: At least two connecting brackets (3) located on opposite sides of the supporting beam (2) along the second direction (F2) are arranged opposite to each other, and the oppositely arranged connecting brackets (3) are connected via a first fixing member (5) passing through the supporting beam (2).

12. The battery tray (100) according to any one of claims 1 to 11, characterized in that: The supporting cross beam (2) is welded to the first side beam (12).

13. The battery tray (100) according to any one of claims 1 to 11, characterized in that: The first side beam (12) includes a first plate (121) extending along the height direction (F3) of the pallet body (1) and a second plate (122) extending along the first direction (F1) toward the accommodating cavity (11), the first plate (121) and the second plate (122) are integrally connected, the end of the supporting cross beam (2) abuts against the inner side of the first plate (121) and the bottom is supported on the second plate (122), the supporting cross beam (2) is connected to the first plate (121) and / or the second plate (122), the connecting bracket (3) is connected to the first plate (121), and the first direction (F1) intersects with the height direction (F3) of the pallet body (1).

14. A battery pack, characterized in that: include: A battery module and a battery tray (100) according to any one of claims 1 to 13, wherein the battery module is arranged in the accommodating cavity (11) of the battery tray (100).

15. An electrical device, characterized in that: Comprising the battery pack according to claim 14.

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