Battery tray and battery pack

Abstract

The utility model discloses a kind of battery tray and battery pack, belong to battery pack technical field, comprising: tray assembly, tray assembly has limiting space, limiting space is used to place multiple battery modules;Liquid cooling plate assembly, liquid cooling plate assembly is set below tray assembly, liquid cooling plate assembly is spaced apart with tray assembly;Connecting assembly, connecting assembly includes structural adhesive layer and willow nail, structural adhesive layer is set between tray assembly and liquid cooling plate assembly, liquid cooling plate assembly is connected with tray assembly by structural adhesive layer, willow nail includes multiple, multiple willow nail is along liquid cooling plate assembly rim interval arrangement, liquid cooling plate assembly is connected with tray assembly by structural adhesive layer and multiple willow nail.The utility model has realized the reliable connection of tray assembly and liquid cooling plate assembly, both adapt to the liquid cooling plate structure under the lightweight development, can effectively connect high-strength box body frame, improve the structural stability and applicability of battery tray.

Description

Technical Field

[0001] This utility model discloses a battery tray and a battery pack, belonging to the field of battery pack technology. Background Technology

[0002] With the rapid development of the new energy vehicle industry, battery trays, as an important carrier for batteries, are undergoing continuous innovation in their manufacturing processes. Currently, the mainstream connection methods between the battery tray frame and the liquid cooling plate assembly are friction stir welding and FDS+glue. However, friction stir welding has extremely high requirements for gap and thickness, making it difficult to adapt to the stamped liquid cooling plate structure under the development of lightweighting. On the other hand, the FDS+glue solution cannot achieve an effective connection when facing high-strength roll-pressed boxes because the FDS strength is insufficient to penetrate the high-strength plate. Utility Model Content

[0003] The purpose of this utility model is to solve the limitations of existing high-strength box frame and liquid cooling plate assembly connection using friction stir welding and FDS+adhesive connection methods when adapting to stamped liquid cooling plate structure or connecting high-strength roll-pressed box, and to propose a battery tray and battery pack.

[0004] The problem to be solved by this utility model is achieved by the following technical solution:

[0005] A battery tray includes: a tray assembly having a limiting space for placing multiple battery modules; a liquid cooling plate assembly disposed below the tray assembly, with the liquid cooling plate assembly and the tray assembly spaced apart; and a connecting assembly including a structural adhesive layer and rivets, the structural adhesive layer being disposed between the tray assembly and the liquid cooling plate assembly, the liquid cooling plate assembly and the tray assembly being connected by the structural adhesive layer, and the rivets including a plurality of rivets being spaced apart along the edge of the liquid cooling plate assembly, the liquid cooling plate assembly and the tray assembly being connected by the structural adhesive layer and the plurality of rivets.

[0006] Furthermore, the liquid cooling plate assembly includes: a flow channel plate body, which is connected to the tray assembly via a structural adhesive layer and a plurality of rivets; and multiple flow channel units, which are spaced apart on the flow channel plate body and are respectively connected to the flow channel plate body.

[0007] Furthermore, the pallet assembly includes: a pallet frame, the pallet frame being spaced apart from the liquid cooling plate assembly and the connecting assembly; and a pallet bottom plate, the pallet bottom plate being disposed below the pallet frame, the pallet frame being connected to the pallet bottom plate, and the pallet bottom plate being connected to the liquid cooling plate assembly via a structural adhesive layer and multiple rivets.

[0008] Furthermore, the battery tray also includes: a tray support assembly, which is spaced apart from the liquid cooling plate assembly and the connecting assembly. The tray support assembly is disposed within the limiting space and is connected to at least one of the tray frame and the tray base plate. The tray support assembly is used to divide the limiting space into multiple installation spaces, which hold multiple battery modules. Adjacent battery modules are separated by the tray support assembly.

[0009] Furthermore, the pallet support assembly includes: a transverse bar, at least one of which extends along the width direction of the pallet frame and is connected to at least one of the pallet frame and the pallet base plate; and a longitudinal bar, extending along the length direction of the pallet frame, including multiple longitudinal bars, which are symmetrically arranged about the longitudinal bar and are connected to at least one of the pallet frame and the pallet base plate.

[0010] Furthermore, the battery tray also includes: connectors, including multiple connectors, which are circumferentially spaced on the outside of the tray frame, and are respectively connected to the tray frame, and are respectively spaced apart from the liquid cooling plate assembly and the connecting assembly.

[0011] Furthermore, the battery tray also includes: a circumferential mounting beam, which comprises multiple circumferential mounting beams arranged circumferentially at intervals on the outside of the tray frame, and each of the multiple circumferential mounting beams is connected to the tray frame, and the circumferential mounting beams are respectively spaced apart from the liquid cooling plate assembly and the connecting assembly.

[0012] A battery pack comprising the aforementioned battery tray.

[0013] The advantages of this invention compared to existing technologies are as follows:

[0014] This utility model discloses a battery tray and battery pack. By using a connection component that combines a structural adhesive layer with multiple rivets spaced along the edge of the liquid cooling plate assembly, a reliable connection between the tray assembly and the liquid cooling plate assembly is achieved. This not only adapts to the liquid cooling plate structure under the development of lightweighting, but also effectively connects to the high-strength box frame, improving the structural stability and applicability of the battery tray. Attached Figure Description

[0015] Figure 1 This is an isometric side view of a first embodiment of a battery tray according to the present invention.

[0016] Figure 2 This is an isometric side view of a second embodiment of a battery tray according to the present invention.

[0017] Figure 3 This is an isometric side view of a third embodiment of a battery tray according to the present invention.

[0018] Figure 4 This is an isometric side view of the fourth embodiment of a battery tray according to this utility model.

[0019] Among them, 10-pallet support assembly, 101-transverse bar, 102-longitudinal bar, 20-pallet assembly, 201-pallet frame, 202-pallet bottom plate, 30-plug connector, 40-liquid cooling plate assembly, 401-flow channel plate body, 402-flow channel unit, 50-connecting assembly, 501-structural adhesive layer, 502-rivet, 60-circumferential mounting beam. Detailed Implementation

[0020] The following is based on the appendix Figure 1-4 Further explanation of this utility model:

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-4As shown, the first embodiment of this utility model provides a battery tray based on the prior art, including: a tray assembly 20, a liquid cooling plate assembly 40, and a connecting assembly 50. The tray assembly 20 has a limiting space for placing multiple battery modules. The liquid cooling plate assembly 40 is disposed below the tray assembly 20 and is spaced apart from the tray assembly 20. The connecting assembly 50 includes a structural adhesive layer 501 and rivets 502. The structural adhesive layer 501 is disposed between the tray assembly 20 and the liquid cooling plate assembly 40. The liquid cooling plate assembly 40 and the tray assembly 20 are connected by the structural adhesive layer 501. The rivets 502 include multiple rivets, which are spaced apart along the edge of the liquid cooling plate assembly 40. The liquid cooling plate assembly 40 and the tray assembly 20 are connected by the structural adhesive layer 501 and the multiple rivets 502.

[0025] In this embodiment, by setting up a tray assembly 20, a liquid cooling plate assembly 40, and a connecting assembly 50 composed of a structural adhesive layer 501 and multiple rivets 502, the structural adhesive layer 501 achieves initial connection and sealing between the tray assembly 20 and the liquid cooling plate assembly 40. At the same time, the multiple rivets 502 spaced along the edge of the liquid cooling plate assembly 40 further strengthen the connection between the two, ensuring reliable fixation between the tray assembly 20 and the liquid cooling plate assembly 40, adapting to different structural forms of the liquid cooling plate assembly 40, and meeting the connection requirements of high-strength box frame, thus improving the stability and applicability of the overall structure. Furthermore, the spaced liquid cooling plate assembly 40 and tray assembly 20 help optimize heat dissipation and ensure the working performance of multiple battery modules placed within the confined space of the tray assembly 20.

[0026] Furthermore, the liquid cooling plate assembly 40 includes: a flow channel plate body 401, which is connected to the tray assembly 20 via a structural adhesive layer 501 and a plurality of rivets 502; and flow channel units 402, which include a plurality of flow channel units 402, which are spaced apart on the flow channel plate body 401 and are respectively connected to the flow channel plate body 401.

[0027] In this embodiment, by setting a flow channel plate body 401 and multiple flow channel units 402, the flow channel plate body 401 is stably connected to the tray assembly 20 by means of a structural adhesive layer 501 and multiple rivets 502, ensuring the reliability of the overall structure. Multiple flow channel units 402, which are spaced apart on the flow channel plate body 401 and connected to the flow channel plate body 401 respectively, can increase the heat dissipation area and optimize the flow path of the coolant, thereby improving the heat dissipation efficiency of the battery module on the tray assembly 20. At the same time, this structural design allows for flexible arrangement of the flow channel units 402 according to actual heat dissipation requirements, enhancing the applicability and heat dissipation effect of the liquid cooling plate assembly 40.

[0028] In this embodiment, the tray assembly 20 includes: a tray frame 201, which is spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50; and a tray bottom plate 202, which is disposed below the tray frame 201. The tray frame 201 and the tray bottom plate 202 are connected, and the tray bottom plate 202 is connected to the liquid cooling plate assembly 40 via a structural adhesive layer 501 and multiple rivets 502. By setting the tray frame 201 and the tray bottom plate 202, and spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50, mutual interference can be reduced. The connection between the tray frame 201 and the tray bottom plate 202 forms a stable load-bearing structure that can reliably support the placed battery module. The connection between the tray bottom plate 202 and the liquid cooling plate assembly 40 via the structural adhesive layer 501 and multiple rivets 502 ensures both the sealing and strength of the connection, and facilitates heat transfer through the tray bottom plate 202 to the liquid cooling plate assembly 40 for heat dissipation. The overall structural design is reasonable, improving the load-bearing capacity and heat dissipation efficiency of the battery tray.

[0029] In one exemplary embodiment, the battery tray further includes a tray support assembly 10, which is spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50, respectively. The tray support assembly 10 is disposed within a limiting space and is connected to at least one of the tray frame 201 and the tray base plate 202. The tray support assembly 10 is used to divide the limiting space into multiple installation spaces, and multiple battery modules are placed in the multiple installation spaces. Adjacent battery modules are separated by the tray support assembly 10.

[0030] In this embodiment, the tray support assembly 10 is spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50 to avoid mutual interference. It is positioned within the limiting space and connected to at least one of the tray frame 201 and the tray bottom plate 202, which can divide the limiting space into multiple installation spaces for placing multiple battery modules respectively. The tray support assembly 10 separates adjacent battery modules to prevent collisions between modules and improves structural stability. At the same time, this separation design facilitates independent heat dissipation and maintenance of each battery module, enhancing the safety and ease of use of the battery tray.

[0031] Further, the pallet support assembly 10 includes: a transverse bar 101, at least one of which extends along the width direction of the pallet frame 201 and is connected to at least one of the pallet frame 201 and the pallet base plate 202; and a longitudinal bar 102, which extends along the length direction of the pallet frame 201 and includes multiple longitudinal bars 102, which are symmetrically arranged about respect to the longitudinal bars 102 and are connected to at least one of the pallet frame 201 and the pallet base plate 202.

[0032] In this embodiment, by setting a transverse rod 101 and multiple longitudinal rods 102, the transverse rod 101 includes at least one and extends along the width direction of the tray frame 201, and is connected to at least one of the tray frame 201 and the tray bottom plate 202, which can support and position the internal structure of the tray assembly 20 from the width direction. The longitudinal rods 102 extend along the length direction of the tray frame 201, and the multiple longitudinal rods 102 are symmetrically arranged about the longitudinal rod 102, and are connected to at least one of the tray frame 201 and the tray bottom plate 202, which can further strengthen the support from the length direction. The combination of the two can not only stably divide the limiting space into multiple installation spaces that meet the requirements, ensuring that multiple battery modules are placed in an orderly manner, but the symmetrical arrangement of multiple longitudinal rods 102 can also make the force more even, improve the overall structural strength and stability of the tray support assembly 10, and thus enhance the battery tray's ability to bear and protect the battery modules.

[0033] In one exemplary embodiment, the battery tray further includes: a plurality of plug-in members 30, which are circumferentially spaced on the outside of the tray frame 201, and are respectively connected to the tray frame 201, and are spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50.

[0034] In this embodiment, multiple connectors 30 of the battery tray are circumferentially spaced on the outside of the tray frame 201 and connected to the tray frame 201 respectively. This facilitates quick and stable docking and installation of the battery tray with the external structure. The circumferentially spaced layout also ensures uniform stress on the connection, improving the overall assembly stability. At the same time, the connectors 30 are spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50, which avoids mutual interference and ensures that the heat dissipation function of the liquid cooling plate assembly 40 and the connection performance of the connecting assembly 50 are not affected, thus enhancing the assembly convenience and structural coordination of the battery tray.

[0035] In one exemplary embodiment, the battery tray further includes: a circumferential mounting beam 60, which includes a plurality of circumferential mounting beams 60 arranged circumferentially at intervals on the outside of the tray frame 201, and the plurality of circumferential mounting beams 60 are respectively connected to the tray frame 201, and the circumferential mounting beams 60 are respectively spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50.

[0036] In this embodiment, multiple circumferential mounting beams 60 of the battery tray are circumferentially spaced on the outside of the tray frame 201 and connected to the tray frame 201 respectively. This provides stable connection points for mounting the battery tray to the vehicle body or other external structures. The circumferentially spaced layout allows the load to be evenly distributed on the tray frame 201, avoiding local stress concentration and improving the reliability of the overall mounting structure. At the same time, the circumferential mounting beams 60 are spaced apart from the liquid cooling plate assembly 40 and the connecting assembly 50, which can effectively avoid interference with the heat dissipation channel of the liquid cooling plate assembly 40 and the connection structure of the connecting assembly 50. This ensures that the heat dissipation efficiency of the liquid cooling plate assembly 40 and the connection strength of the connecting assembly 50 are not affected, further enhancing the installation adaptability and structural stability of the battery tray.

[0037] The second embodiment of this utility model provides a battery pack based on the first embodiment, including the battery tray of the first embodiment.

[0038] In this embodiment, the battery pack, including the battery tray of the first embodiment, can utilize the stable structure formed by the tray frame 201 and the tray base plate 202 in the tray assembly 20, along with the multiple installation spaces separated by the transverse rods 101 and longitudinal rods 102 of the tray support assembly 10, to achieve orderly support and reliable protection for multiple battery modules, preventing collisions between modules. At the same time, the flow channel plate body 401 of the liquid cooling plate assembly 40 is firmly connected to the tray base plate 202 through the structural adhesive layer 501 and multiple rivets 502. The multiple flow channel units 402 can efficiently dissipate the heat generated by the battery modules. The peripheral mounting beam 60 and the plug-in parts 30 can also provide convenience for mounting and docking the battery pack with external structures, and the spacing between the components avoids functional interference, thus improving the overall structural stability, heat dissipation efficiency, and assembly adaptability of the battery pack.

[0039] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A battery tray, characterized in that, include: A tray assembly (20) having a limiting space for placing multiple battery modules; A liquid cooling plate assembly (40) is disposed below the tray assembly (20) and the liquid cooling plate assembly (40) is spaced apart from the tray assembly (20); A connecting component (50) includes a structural adhesive layer (501) and rivets (502). The structural adhesive layer (501) is disposed between the tray assembly (20) and the liquid-cooled plate assembly (40). The liquid-cooled plate assembly (40) and the tray assembly (20) are connected by the structural adhesive layer (501). A plurality of rivets (502) are spaced apart along the edge of the liquid-cooled plate assembly (40). The liquid-cooled plate assembly (40) and the tray assembly (20) are connected by the structural adhesive layer (501) and the plurality of rivets (502).

2. The battery tray according to claim 1, characterized in that, The liquid-cooled plate assembly (40) includes: The flow channel plate body (401) is connected to the tray assembly (20) via the structural adhesive layer (501) and a plurality of the rivets (502); The flow channel unit (402) includes a plurality of flow channel units (402) spaced apart on the flow channel plate body (401) and the plurality of flow channel units (402) are respectively connected to the flow channel plate body (401).

3. The battery tray according to claim 1 or 2, characterized in that, The tray assembly (20) includes: A tray frame (201) is spaced apart from the liquid cooling plate assembly (40) and the connecting assembly (50); A pallet bottom plate (202) is disposed below the pallet frame (201), the pallet frame (201) is connected to the pallet bottom plate (202), and the pallet bottom plate (202) is connected to the liquid cooling plate assembly (40) through the structural adhesive layer (501) and a plurality of rivets (502).

4. The battery tray according to claim 3, characterized in that, The battery tray also includes: A tray support assembly (10) is provided at intervals with the liquid cooling plate assembly (40) and the connecting assembly (50). The tray support assembly (10) is disposed within the limiting space and is connected to at least one of the tray frame (201) and the tray base plate (202). The tray support assembly (10) is used to divide the limiting space into multiple installation spaces, and multiple battery modules are placed in the multiple installation spaces. Adjacent battery modules are separated by the tray support assembly (10).

5. The battery tray according to claim 4, characterized in that, The tray support assembly (10) includes: A transverse bar (101), at least one of which extends along the width direction of the pallet frame (201) and is connected to at least one of the pallet frame (201) and the pallet bottom plate (202). A longitudinal bar (102) extends along the length of the pallet frame (201). The longitudinal bar (102) includes a plurality of longitudinal bars (102), which are symmetrically arranged about the longitudinal bar (102). The plurality of longitudinal bars (102) are connected to at least one of the pallet frame (201) and the pallet bottom plate (202).

6. The battery tray according to claim 3, characterized in that, The battery tray also includes: The connector (30) includes a plurality of connectors, which are circumferentially spaced on the outside of the tray frame (201). The plurality of connectors (30) are respectively connected to the tray frame (201) and are spaced apart from the liquid cooling plate assembly (40) and the connecting assembly (50).

7. The battery tray according to claim 3, characterized in that, The battery tray also includes: The circumferential mounting beams (60) include multiple circumferential mounting beams (60), which are circumferentially spaced on the outside of the pallet frame (201). The multiple circumferential mounting beams (60) are respectively connected to the pallet frame (201), and the circumferential mounting beams (60) are respectively spaced apart from the liquid cooling plate assembly (40) and the connecting assembly (50).

8. A battery pack, characterized in that, Includes the battery tray according to any one of claims 1-7.

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