Tray assembly, battery pack assembly and vehicle

Abstract

The utility model discloses a tray assembly, a battery pack assembly and a vehicle. The tray assembly comprises a tray bottom plate and a battery pack, the tray edge beam is arranged on the outer edge of the tray bottom plate in a surrounding mode so that a containing space can be defined by the tray edge beam and the tray bottom plate together. The reinforcing pieces are located on at least one side of the tray bottom plate, and the reinforcing pieces are connected with the tray bottom plate and the tray edge beams respectively. According to the tray assembly designed by the utility model, the reinforcing piece is arranged, so that the structural strength of the joint of the tray bottom plate and the tray edge beam can be increased, the local stress is reduced, and the fatigue performance is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery packs, in particular to a tray assembly, a battery pack assembly and a vehicle. Background Art

[0002] In the related art, a battery pack is generally provided with a tray. In some existing technologies, the tray is stamped from steel material, and stress is concentrated at the bend of the tray, which is prone to fatigue failure. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a pallet assembly. The pallet assembly designed according to the utility model is provided with a reinforcement member, which can increase the structural strength of the connection between the pallet bottom plate and the pallet side beam, reduce its local stress, and improve fatigue performance.

[0004] The utility model also provides a battery pack assembly having the tray assembly.

[0005] The utility model also provides a vehicle having the battery pack assembly.

[0006] According to the utility model, the pallet assembly includes: a pallet bottom plate; a pallet side beam, which is arranged around the outer edge of the pallet bottom plate to define a storage space together with the pallet bottom plate; a reinforcement member, which is located on at least one side of the pallet bottom plate and is respectively connected to the pallet bottom plate and the pallet side beam.

[0007] According to the utility model, the pallet assembly is provided with a reinforcement member, which can increase the structural strength of the connection between the pallet bottom plate and the pallet side beam, reduce its local stress, and improve fatigue performance.

[0008] According to some embodiments of the utility model, the reinforcement is arranged in the accommodating space and the two side edges of the reinforcement are respectively connected to the pallet side beam and the pallet bottom plate, and at least a portion of the reinforcement protrudes toward the inside of the accommodating space to define a cavity between the reinforcement and the pallet side beam and the pallet bottom plate.

[0009] According to some embodiments of the present utility model, the reinforcement includes a first bending section and a second bending section, wherein one side of the first bending section is connected to the pallet bottom plate, the other side of the first bending section extends in a direction away from the pallet bottom plate and is connected to one side of the second bending section, and the other side of the second bending section extends toward the pallet side beam and is connected to the pallet side beam.

[0010] According to some embodiments of the utility model, a first flange is formed on one side of the first bending section, and the first flange is connected to the bottom plate of the pallet; a second flange is formed on the other side of the second bending section, and the second flange is connected to the side beam of the pallet.

[0011] According to some embodiments of the present invention, the first flange is welded and / or bonded to the bottom plate of the pallet; the second flange is welded and / or bonded to the side beam of the pallet.

[0012] According to some embodiments of the utility model, the reinforcement includes a first fixed section and a second fixed section, wherein the surface of the first fixed section facing the pallet bottom plate is in contact with the pallet bottom plate, the surface of the second fixed section facing the pallet side beam is in contact with the pallet side beam, one end of the first fixed section extends toward the pallet side beam, one end of the second fixed section extends toward the pallet bottom plate, and one end of the first fixed section is connected to one end of the second fixed section.

[0013] According to some embodiments of the present invention, the pallet bottom plate and the pallet side beams are constructed as an integral stamped part.

[0014] The following briefly describes the battery pack assembly according to the second embodiment of the utility model.

[0015] The battery pack assembly according to the utility model includes: a tray assembly, the tray assembly is constructed as any one of the above embodiments; a battery cell module, the battery cell module is arranged on the tray bottom plate and located in the accommodating space; a connector, the connector is arranged on the side of the battery cell module away from the tray bottom plate and the two ends of the connector are respectively connected to the tray bottom plate, the tray side beam and at least one of the reinforcement. Since the battery pack assembly according to the utility model is provided with the tray assembly of the above embodiments, the battery pack assembly has higher structural strength, better integrity and lower cost.

[0016] According to some embodiments of the utility model, the reinforcement member is constructed in two pieces and is respectively arranged on both sides of the tray bottom plate in the first direction; the connecting member includes: a stop section, the stop section is arranged on the side of the battery cell module away from the tray bottom plate, and the stop section extends in the first direction; a first connecting section and a second connecting section, the first connecting section and the second connecting section are respectively connected to the two ends of the stop section, the first connecting section and the second connecting section extend toward the tray bottom plate and are respectively connected to the two reinforcement members.

[0017] According to some embodiments of the present invention, the battery pack assembly further includes: a heat exchange plate, which is arranged on a side of the battery cell module away from the tray bottom plate and is located in the accommodating space, and the heat exchange plate is arranged between the battery cell module and the stop section.

[0018] According to some embodiments of the present invention, a heat exchange channel is formed inside the heat exchange plate, and a plurality of first protrusions corresponding to the heat exchange channel are formed on the surface of the heat exchange plate away from the battery cell module, and the first protrusions protrude in a direction away from the battery cell module; the stop section is formed with a plurality of second protrusions corresponding one-to-one to the plurality of first protrusions, and the second protrusions protrude in a direction away from the first connecting section and away from the second connecting section.

[0019] According to some embodiments of the present invention, the connecting member is configured as a plurality of connecting members spaced apart in a second direction, and the second direction is orthogonal to the first direction.

[0020] The following briefly describes a vehicle according to an embodiment of the third aspect of the utility model.

[0021] The vehicle according to the utility model includes the battery pack assembly described in any one of the above embodiments. Since the vehicle according to the utility model is provided with the battery pack assembly described in the above embodiments, the vehicle has better safety performance.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is an overall structural diagram of a tray assembly according to an embodiment of the utility model.

[0025] Figure 2 It is an enlarged view of the local structure of the tray assembly according to some embodiments of the utility model.

[0026] Figure 3 It is an enlarged view of the local structure of the tray assembly according to other embodiments of the utility model.

[0027] Figure 4 It is a structural diagram of a connector according to an embodiment of the utility model.

[0028] Figure 5 It is a diagram of the matching structure of the tray assembly and the connecting piece according to an embodiment of the utility model.

[0029] Figure 6 yes Figure 5 The middle circle shows an enlarged view of point A.

[0030] Figure 7 It is a structural diagram of a tray assembly accommodating a heat exchange plate according to an embodiment of the utility model.

[0031] Reference numerals:

[0032] 10. Pallet assembly; 11. Pallet bottom plate; 12. Pallet side beam; 13. Reinforcement member; 13a. Cavity; 131. First bending section; 132. Second bending section; 133. First flange; 134. Second flange; 135. First fixing section; 136. Second fixing section; 14. End plate;

[0033] 30. Connecting piece; 31. Stop section; 311. Second protrusion; 32. First connecting section; 33. Second connecting section; 34. Connecting foot; 34a. Mounting hole; 35. Fixing piece;

[0034] 40. heat exchange plate; 41. first protrusion. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the related art, a battery pack is generally provided with a tray. In some existing technologies, the tray is stamped from steel material, and stress is concentrated at the bend of the tray, which is prone to fatigue failure.

[0041] Reference below Figure 1-Figure 7 A tray assembly 10 according to an embodiment of the present invention is described.

[0042] like Figure 1 As shown, the pallet assembly 10 according to the utility model includes: a pallet bottom plate 11, a pallet side beam 12 and a reinforcement 13. The pallet side beam 12 is arranged around the outer edge of the pallet bottom plate 11 to define a storage space together with the pallet bottom plate 11; the reinforcement 13 is located on at least one side of the pallet bottom plate 11, and the reinforcement 13 is connected to the pallet bottom plate 11 and the pallet side beam 12 respectively. Specifically, the pallet bottom plate 11 and the pallet side beam 12 are jointly constructed as a pallet body, and the pallet body forms a storage space, and the storage space can accommodate structural parts such as battery cells, distribution boxes, and heat exchange plates 40. In order to ensure the structural strength of the pallet body, the reinforcement 13 can be arranged at the connection between the pallet bottom plate 11 and the pallet side beam 12 to increase the structural strength of the pallet body at the bend, reduce its local stress, and improve fatigue performance, thereby increasing the strength and safety performance of the structure provided with the pallet assembly 10, and can reduce the fatigue stress of the structural parts placed in the storage space. In some embodiments, the reinforcement 13 is stamped and formed by steel material, which has the characteristics of low cost and can reduce the cost of the pallet assembly 10.

[0043] According to the utility model, the pallet assembly 10 is provided with a reinforcement member 13, which can increase the structural strength of the connection between the pallet bottom plate 11 and the pallet side beam 12, reduce its local stress, and improve fatigue performance.

[0044] It can be understood that the reinforcement 13 can be set at any position, ensuring that the reinforcement 13 is respectively connected to the pallet bottom plate 11 and the pallet side beam 12. For example, the reinforcement 13 is set in the accommodating space, or is set outside the accommodating space, and the reinforcement 13 can cover the connection between the pallet bottom plate 11 and the pallet side beam 12 as a whole. The reinforcement 13 can also be partially connected to the pallet body. At this time, the reinforcement 13 can be connected to the pallet bottom plate 11 at one end and connected to the pallet side beam 12 at the other end. It can be selected according to actual needs and is not limited here.

[0045] According to some embodiments of the present invention, Figure 2 As shown, the reinforcement 13 is arranged in the accommodating space and the two side edges of the reinforcement 13 are respectively connected to the pallet side beam 12 and the pallet bottom plate 11, at least a portion of the reinforcement 13 protrudes toward the inside of the accommodating space to define a cavity 13a between the reinforcement 13 and the pallet side beam 12 and the pallet bottom plate 11. At this time, the reinforcement 13 is arranged in the accommodating space, one side of the reinforcement 13 is connected to the pallet bottom plate 11, and the other side is connected to the pallet side beam 12, the edge portion of the reinforcement 13 is connected to the pallet body, and the middle portion of the reinforcement 13 and the pallet body together define a cavity 13a, and the cavity 13a can strengthen the structural strength of the pallet body at the bend.

[0046] In some embodiments, the reinforcement member 13 is configured to be arc-shaped; in other embodiments, the reinforcement member 13 is configured to be a plurality of segments connected in sequence.

[0047] According to some embodiments of the present invention, Figure 2 As shown, the reinforcement 13 includes a first bending section 131 and a second bending section 132, wherein one side of the first bending section 131 is connected to the pallet bottom plate 11, the other side of the first bending section 131 extends in a direction away from the pallet bottom plate 11 and is connected to one side of the second bending section 132, the other side of the second bending section 132 extends toward the pallet side beam 12 and is connected to the pallet side beam 12, and the first bending section 131, the second bending section 132, the pallet bottom plate 11 and the pallet side beam 12 jointly define the above-mentioned cavity 13a.

[0048] According to some embodiments of the present invention, Figure 2As shown, a first flange 133 is formed on one side of the first bending section 131, and the first flange 133 is connected to the pallet bottom plate 11; a second flange 134 is formed on the other side of the second bending section 132, and the second flange 134 is connected to the pallet side beam 12. The reinforcement 13 is connected to the pallet body through the first flange 133 and the second flange 134 to increase the contact area between the reinforcement 13 and the pallet body, thereby increasing the connection strength between the reinforcement 13 and the pallet body and ensuring the structural strength of the pallet assembly 10.

[0049] According to some embodiments of the present invention, Figure 2 As shown, the first flange 133 is welded and / or bonded to the pallet bottom plate 11; the second flange 134 is welded and / or bonded to the pallet side beam 12. In some embodiments, a first connection layer is provided between the first flange 133 and the pallet bottom plate 11, and a second connection layer is provided between the second flange 134 and the pallet side beam 12, wherein the first connection layer and the second connection layer may be a glue coating or a welding layer, which may be selected according to actual needs and is not limited here.

[0050] According to some embodiments of the present invention, Figure 3 As shown, the reinforcement 13 includes a first fixing section 135 and a second fixing section 136, wherein the surface of the first fixing section 135 facing the pallet bottom plate 11 is in contact with the pallet bottom plate 11, and the surface of the second fixing section 136 facing the pallet side beam 12 is in contact with the pallet side beam 12, one end of the first fixing section 135 extends toward the pallet side beam 12, one end of the second fixing section 136 extends toward the pallet bottom plate 11, and one end of the first fixing section 135 is connected to one end of the second fixing section 136. At this time, the reinforcement 13 as a whole covers the connection between the pallet bottom plate 11 and the pallet side beam 12, which can increase the thickness of the connection between the pallet bottom plate 11 and the pallet side beam 12, thereby increasing the structural strength of the connection between the pallet bottom plate 11 and the pallet side beam 12.

[0051] According to some embodiments of the present invention, the pallet bottom plate 11 and the pallet side beams 12 are constructed as an integral stamped part to reduce the number of parts of the pallet assembly 10, lower production costs and simplify the assembly process.

[0052] In some embodiments, the pallet body composed of the pallet bottom plate 11 and the pallet side beams 12 is formed by stamping high-strength steel.

[0053] In some existing technologies, the battery pack tray is bonded to the battery cell module and liquid cooling plate with glue. However, there are problems of poor connection strength and poor integrity between the tray, the battery cell module and the liquid cooling plate. It is easy for the local stress of the battery pack to be excessive, leading to fatigue failure of the battery pack structure. If the connection strength between the tray, the battery cell module and the liquid cooling plate is increased, a large amount of high-strength performance glue will be required, which will increase the cost of the battery pack.

[0054] The following is a brief description of the battery pack assembly according to the present invention.

[0055] like Figure 4-Figure 7 As shown, the battery pack assembly according to the utility model includes: a tray assembly 10, a battery cell module and a connector 30. The tray assembly 10 is constructed as any of the tray assembly 10 described in the above embodiments; the battery cell module is arranged on the tray bottom plate 11 and is located in the accommodation space; the connector 30 is arranged on the side of the battery cell module away from the tray bottom plate 11, and the two ends of the connector 30 are respectively connected to at least one of the tray bottom plate 11, the tray side beam 12 and the reinforcement 13. The connector 30 is arranged to increase the binding force from the bottom of the tray assembly 10 to the side of the battery cell module and the side of the battery cell module away from the tray bottom plate 11, so as to bind the battery cell module to the tray assembly 10, so that the battery cell module and the tray assembly 10 can be connected with glue of lower strength, and the amount of glue can be appropriately reduced, thereby reducing the cost of the whole battery pack assembly. At the same time, the tray assembly 10, the battery cell module and the connector 30 form an overall closed loop, and the overall structural strength of the electromagnetic holding assembly is higher. Since the battery pack assembly according to the present invention is provided with the tray assembly 10 of the above-mentioned embodiment, the battery pack assembly has higher structural strength, better integrity and lower cost.

[0056] In some embodiments, the connector 30 is made of a light, high-temperature resistant material with high structural strength.

[0057] In some embodiments, the reinforcing member 13 and the connecting member 30 are both stamped and formed from steel, which has the characteristic of low cost.

[0058] According to some embodiments of the present invention, Figure 5 As shown, the reinforcement member 13 is constructed in two pieces and is respectively arranged on both sides of the tray bottom plate 11 in the first direction; Figure 4-Figure 6 As shown, the connecting member 30 includes a stop section 31, a first connecting section 32 and a second connecting section 33. The stop section 31 is arranged on the side of the battery cell module away from the tray bottom plate 11, and the stop section 31 extends in a first direction; the first connecting section 32 and the second connecting section 33 are respectively connected to the two ends of the stop section 31, and the first connecting section 32 and the second connecting section 33 extend toward the tray bottom plate 11 and are respectively connected to the two reinforcement members 13.

[0059] In some embodiments, the two side edges of the reinforcement 13 are respectively connected to the pallet side beam 12 and the pallet bottom plate 11, and the reinforcement 13 has a second bending section 132. A stop section 31 is provided on the side of the battery module away from the pallet bottom plate 11, and both ends of the stop section 31 extend toward the pallet bottom plate 11 and are fixedly connected to the second bending section 132. The reinforcement 13 has the function of strengthening the structural strength of the pallet assembly 10 and resisting external forces. At the same time, through the connecting member 30 connected by the reinforcement 13 and the battery module bound by the connecting member 30, the reinforcement 13, the pallet body, the battery module and the connecting member 30 form an integral closed loop, thereby enhancing the overall structure. The present application designs the reinforcement 13 and the connecting member 30 to form an integral surrounding structure between the battery module and the pallet assembly 10. By connecting the reinforcement 13 and the connecting member 30, the battery module can be fixed to the pallet assembly 10 without adding an additional connection structure, simplifying the overall structure of the battery pack assembly, and reducing the cost of the battery pack assembly.

[0060] According to some embodiments of the present invention, Figure 7 As shown, the battery pack assembly also includes a heat exchange plate 40, which is arranged on the side of the battery cell module away from the tray bottom plate 11 and is located in the accommodating space, and the heat exchange plate 40 is arranged between the battery cell module and the stop section 31. Specifically, the heat exchange plate 40 is suitable for exchanging heat with the battery cell module. The heat exchange plate 40 is arranged between the battery cell module and the stop section 31 of the connector 30 to reduce the local force on the battery cell module. The heat exchange plate 40 can evenly distribute the restraining force of the stop section 31 to the battery cell module, which can effectively reduce the fatigue stress of the battery cell module and increase the safety performance of the battery pack assembly. In addition, the tray body, the connector 30 and the heat exchange plate 40 are rigidly connected, which can significantly increase the structural strength of the battery pack assembly.

[0061] According to some embodiments of the present invention, Figure 7 As shown, a heat exchange channel is formed inside the heat exchange plate 40, and a plurality of first protrusions 41 corresponding to the heat exchange channel are formed on the surface of the heat exchange plate 40 away from the battery module, and the first protrusions 41 protrude in a direction away from the battery module; Figure 4 As shown, the stop section 31 is formed with a plurality of second protrusions 311 corresponding to the plurality of first protrusions 41, and the second protrusions 311 protrude in a direction away from the first connecting section 32 and away from the second connecting section 33. Specifically, when the stop section 31 contacts the heat exchange plate 40, the first protrusions 41 can cooperate with the second protrusions 311, which can increase the contact area between the stop section 31 and the heat exchange plate 40, thereby increasing the tension of the connector 30, thereby increasing the binding strength of the connector 30 on the heat exchange plate 40, and reducing the local pressure of the connector 30 on the heat exchange plate 40.

[0062] In some embodiments, Figure 4-Figure 6As shown, the free ends of the first connecting section 32 and the second connecting section 33 are both provided with connecting feet 34, and the connecting feet 34 of the first connecting section 32 and the connecting feet 34 of the second connecting section 33 extend in directions away from each other, and mounting holes 34a are provided on the connecting feet 34. The connecting feet 34 can be fixed to the second bending section 132 of the reinforcement 13 by the fixing member 35, so as to realize the fixed connection between the connecting member 30 and the reinforcement 13.

[0063] In some embodiments, the fixing member 35 is constructed as a bolt, the connecting foot 34 of the connecting member 30 is provided with a bolt mounting hole 34a, the second bending section 132 of the reinforcement member 13 is provided with a threaded hole, and the bolt passes through the bolt mounting hole 34a and the threaded hole to fix the connecting member 30 and the reinforcement member 13.

[0064] According to some embodiments of the present invention, Figure 5 As shown, the connectors 30 are constructed to be multiple and spaced apart in the second direction, the second direction is orthogonal to the first direction, the multiple connectors 30 can increase the binding strength of the battery cell module, and the multiple connectors 30 are spaced apart in the second direction so that the battery cell module and the heat exchange plate 40 can be evenly stressed.

[0065] In some embodiments, after the connector 30 cooperates with the reinforcement 13 , the battery cell module can be limited in a first direction, and the connector 30 constrains the battery cell module to limit the movement of the battery cell module in a direction away from the tray bottom plate 11 .

[0066] In some embodiments, end plates 14 are further provided at both ends of the battery cell module in the second direction, and the end plates 14 are fixed to the tray bottom plate 11 to limit the movement of the battery cell module in the second direction, thereby achieving three-phase limiting, preventing the battery cell module from shaking in the battery pack assembly, and ensuring the overall structural stability of the battery pack assembly.

[0067] The vehicle according to the present utility model is briefly described below.

[0068] The vehicle according to the utility model includes the battery pack assembly described in any one of the above embodiments. Since the vehicle according to the utility model is provided with the battery pack assembly described in the above embodiments, the vehicle has better safety performance.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0070] Although embodiments of the present invention have been shown and described above, changes, modifications, substitutions and variations may be made to the embodiments described above.

Claims

1. A tray assembly, characterized in that: include: Tray bottom plate (11); A pallet side beam (12), the pallet side beam (12) being arranged around the outer edge of the pallet bottom plate (11) so as to define a containing space together with the pallet bottom plate (11); A reinforcement member (13), wherein the reinforcement member (13) is located on at least one side of the pallet bottom plate (11), and the reinforcement member (13) is respectively connected to the pallet bottom plate (11) and the pallet side beam (12).

2. The tray assembly according to claim 1, characterized in that: The reinforcement member (13) is arranged in the accommodating space and the two side edges of the reinforcement member (13) are respectively connected to the pallet side beam (12) and the pallet bottom plate (11), and at least a portion of the reinforcement member (13) protrudes toward the inside of the accommodating space to define a cavity (13a) between the reinforcement member (13) and the pallet side beam (12) and the pallet bottom plate (11).

3. The tray assembly according to claim 2, characterized in that: The reinforcement member (13) comprises a first bending section (131) and a second bending section (132), wherein one side of the first bending section (131) is connected to the pallet bottom plate (11), the other side of the first bending section (131) extends in a direction away from the pallet bottom plate (11) and is connected to one side of the second bending section (132), and the other side of the second bending section (132) extends toward the pallet side beam (12) and is connected to the pallet side beam (12).

4. The tray assembly according to claim 3, characterized in that: A first flange (133) is formed on one side of the first bending section (131), and the first flange (133) is connected to the pallet bottom plate (11); a second flange (134) is formed on the other side of the second bending section (132), and the second flange (134) is connected to the pallet side beam (12).

5. The tray assembly according to claim 4, characterized in that: The first flange (133) is welded and / or bonded to the pallet bottom plate (11); and the second flange (134) is welded and / or bonded to the pallet side beam (12).

6. The tray assembly according to claim 1, characterized in that: The reinforcement (13) comprises a first fixing section (135) and a second fixing section (136), wherein the surface of the first fixing section (135) facing the pallet bottom plate (11) is in contact with the pallet bottom plate (11), and the surface of the second fixing section (136) facing the pallet side beam (12) is in contact with the pallet side beam (12), one end of the first fixing section (135) extends toward the pallet side beam (12), one end of the second fixing section (136) extends toward the pallet bottom plate (11), and one end of the first fixing section (135) is connected to one end of the second fixing section (136).

7. The tray assembly according to claim 1, characterized in that: The pallet bottom plate (11) and the pallet side beam (12) are constructed as an integral stamped part.

8. A battery pack assembly, characterized in that: include: A tray assembly (10), wherein the tray assembly (10) is configured as a tray assembly (10) according to any one of claims 1 to 7; A battery cell module, the battery cell module being arranged on the tray bottom plate (11) and located in the accommodation space; A connecting member (30), wherein the connecting member (30) is arranged on a side of the battery cell module away from the tray bottom plate (11), and two ends of the connecting member (30) are respectively connected to at least one of the tray bottom plate (11), the tray side beam (12) and the reinforcement member (13).

9. The battery pack assembly according to claim 8, characterized in that: The reinforcement members (13) are structured in two pieces and are respectively arranged on two sides of the tray bottom plate (11) in the first direction; The connecting member (30) comprises: A stop section (31), the stop section (31) being arranged on a side of the battery cell module away from the tray bottom plate (11), and the stop section (31) extending in a first direction; A first connecting section (32) and a second connecting section (33), wherein the first connecting section (32) and the second connecting section (33) are respectively connected to two ends of the stop section (31), and the first connecting section (32) and the second connecting section (33) extend toward the tray bottom plate (11) and are respectively connected to the two reinforcement members (13).

10. The battery pack assembly according to claim 9, characterized in that: Also includes: A heat exchange plate (40), the heat exchange plate (40) being arranged on a side of the battery cell module away from the tray bottom plate (11) and located in the accommodation space, and the heat exchange plate (40) being arranged between the battery cell module and the stop section (31).

11. The battery pack assembly according to claim 10, characterized in that: A heat exchange channel is formed inside the heat exchange plate (40), and a plurality of first protrusions (41) corresponding to the heat exchange channel are formed on a surface of the heat exchange plate (40) facing away from the battery cell module, and the first protrusions (41) protrude in a direction away from the battery cell module; the stop section (31) is formed with a plurality of second protrusions (311) corresponding one-to-one to the plurality of first protrusions (41), and the second protrusions (311) protrude in a direction away from the first connecting section (32) and away from the second connecting section (33).

12. The battery pack assembly according to claim 9, characterized in that: The connecting member (30) is configured as a plurality of connecting members arranged at intervals in a second direction, and the second direction is orthogonal to the first direction.

13. A vehicle, characterized in that: Comprising a battery pack assembly according to any one of claims 8-12.

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