New energy battery tray structure

Abstract

The utility model discloses a new energy battery tray structure which comprises a frame, an upper cover plate and a lower tray, the frame is formed by splicing hollow pipes, the lower tray is arranged at the bottom of the frame, a battery pack is arranged on the inner side of the frame, the upper cover plate is arranged above the battery pack, the upper end of the frame is connected with a first stud in a welded mode, and the lower end of the frame is connected with a second stud in a welded mode. A second stud is connected to the lower end face of the frame in a welded mode, the first stud penetrates through the upper cover plate and is connected with a first nut to lock the upper cover plate to the upper end of the frame, and the second stud penetrates through the lower tray and is in threaded connection with a second nut to lock the lower tray to the frame. The first stud and the second stud are welded through the hollow pipe, and are respectively connected with the upper cover plate and the lower tray through the first stud and the second stud, so that the hollow pipe is prevented from being perforated, riveted and sealed, the sealing performance of the inner cavity of the hollow pipe is guaranteed, the operation process is simplified, and the processing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery tray technology, specifically to a new energy battery tray structure. Background Technology

[0002] With the gradual development of new energy vehicles, new energy batteries are a crucial component of new energy vehicles. The new energy battery tray (also known as the battery box) is the supporting skeleton of the battery module and thermal management system, responsible for fixing the battery cells and modules and ensuring the stability of the overall structure.

[0003] A current battery tray consists of a frame beam with a battery pack housed inside. Sealing plates at the top and bottom of the frame beam confine the battery pack within the beam. Existing battery trays are fixed to the sealing plates using a riveting method. However, this method requires rivets to penetrate the frame beam's wall panels, necessitating additional adhesive sealing to achieve airtightness. Furthermore, drilling holes in the frame beam before riveting is necessary, and poor fit between the rivet screws and holes can lead to issues like insufficient tightening or misalignment, compromising the original frame's structural strength. The process is complex, and production is largely manual, requiring approximately 200 rivet screws per battery tray, resulting in low production efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems and provide a new energy battery tray structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A new energy battery tray structure includes a frame, an upper cover plate, and a lower tray. The frame is made of hollow tubes spliced ​​together. The lower tray is provided at the bottom of the frame. A battery pack is provided inside the frame. The upper cover plate is provided above the battery pack. A first stud is welded to the upper end of the frame. A second stud is welded to the lower end of the frame. The first stud passes through the upper cover plate and is connected to a first nut to lock the upper cover plate to the upper end of the frame. The second stud passes through the lower tray and is threadedly connected to a second nut to lock the lower tray to the frame.

[0007] Preferably, a water-cooled plate is provided on the lower tray, and the water-cooled plate is located at the bottom of the battery pack. The water-cooled plate cools the battery components, improving heat dissipation.

[0008] Preferably, a plurality of first studs are provided at the upper end of the hollow tube around the outer perimeter of the frame, and a plurality of second studs are provided at the lower end of the hollow tube around the outer perimeter of the frame. By providing multiple studs, the connection strength is improved.

[0009] Preferably, the water-cooled plate includes a first plate and a second plate. The first plate is provided with a water channel groove. The second plate is welded and fixed to the first plate and seals with the first plate. The second plate covers the water channel groove so that the water channel groove forms a cooling water flow channel.

[0010] Preferably, the wall thickness of the hollow tube is 1.5 mm.

[0011] Preferably, the upper cover plate has a first mounting hole corresponding to the first stud, and the first stud passes through the first mounting hole and is threadedly connected to the first nut; the lower tray has a second mounting hole corresponding to the second stud, and the second stud passes through the second mounting hole and is threadedly connected to the second nut.

[0012] Preferably, the upper cover plate has a first sealing groove on the side near the hollow tube, and a first sealing ring is disposed in the first sealing groove. The first sealing ring is annular and fits around its circumference against the upper end surface of the frame. The upper cover plate and the frame are sealed together by the first sealing ring. The lower tray has a second sealing groove on the side near the hollow tube, and a second sealing ring is disposed in the second sealing groove. The second sealing ring is annular and fits around its circumference against the lower end surface of the frame. The lower tray and the frame are sealed together by the second sealing ring. The first and second sealing rings ensure that the cavity enclosed by the upper cover plate, the frame, and the lower cover plate is in a sealed state.

[0013] This utility model provides a new energy battery tray structure with the following advantages: By welding a first stud and a second stud onto a hollow tube, and connecting the first stud and the second stud to the upper cover plate and the lower tray respectively, the perforation, riveting, and sealing operations of the hollow tube are avoided, ensuring the sealing of the hollow tube cavity. At the same time, the operation process is simplified and the processing efficiency is improved. The studs are welded to the frame by resistance welding, and the bolt welding fixation can realize automated welding, reducing many production steps in the existing riveting connection manufacturing, simplifying the production process, and reducing energy consumption and labor costs in the production process. A water-cooling plate is set at the bottom of the battery pack to cool the battery pack, so that the working environment of the battery pack is maintained below a certain temperature during operation, ensuring safe use. Attached Figure Description

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings:

[0015] Figure 1 A schematic diagram of a new energy battery tray structure provided by this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of a local structure in the middle;

[0017] Figure 3A top view of a new energy battery tray structure after removing the top cover plate, provided by this utility model;

[0018] Figure 4 for Figure 2 A schematic diagram of the local structure of part A in the middle;

[0019] Figure 5 for Figure 2 A schematic diagram of the local structure of part B in the middle section.

[0020] The following are the labels in the diagram: 1. Frame; 11. Hollow tube; 2. Top cover plate; 21. First mounting hole; 22. First sealing groove; 23. First sealing ring; 3. Lower tray; 31. Second mounting hole; 32. Second sealing groove; 33. Second sealing ring; 4. Water cooling plate; 41. First plate; 42. Second plate; 43. Cooling water flow channel; 5. First stud; 6. Second stud; 7. First nut; 8. Second nut; 9. Battery pack. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0024] like Figures 1-3As shown, a new energy battery tray structure includes a frame 1, an upper cover plate 2, and a lower tray 3. The frame 1 is spliced ​​from hollow tubes 11. The lower tray 3 is provided at the bottom of the frame 1. A battery pack 9 is provided inside the frame 1. The upper cover plate 2 is provided above the battery pack 9. A first stud 5 is welded to the upper end of the frame 1. A second stud 6 is welded to the lower end of the frame 1. The first stud 5 passes through the upper cover plate 2 and is connected to a first nut 7 to lock the upper cover plate 2 to the upper end of the frame 1. The second stud 6 passes through the lower tray 3 and is threadedly connected to a second nut 8 to lock the lower tray 3 to the frame 1.

[0025] By adopting the above technical solution, the hollow tube 11 is connected to the upper cover plate 2 and the lower tray 3 respectively by welding the first stud 5 and the second stud 6. This avoids the need for drilling, riveting, and sealing operations on the hollow tube 11, ensuring the airtightness of the inner cavity of the hollow tube 11, simplifying the operation process, and improving processing efficiency. Furthermore, the structural connection strength is high, and the battery is securely installed. Specifically, the first stud 5 and the second stud 6 are resistance welded to the frame 1. A robotic arm can be used to pick up the studs and then weld them to the frame 1 using resistance welding, thereby achieving automated welding processing, improving welding efficiency, shortening the production cycle, and reducing the manufacturing cost of the battery tray. This solves the problems of complex and inefficient riveting processes in existing structures, reducing the production steps involved in riveting technology, such as drilling holes in the frame and applying additional adhesive for sealing after riveting to achieve airtightness. It also avoids process problems such as insufficient tightening, misalignment, and missed riveting caused by manual riveting, simplifying the production process and reducing energy consumption and labor costs.

[0026] Specifically, a water-cooled plate 4 is provided on the lower tray 3, and the water-cooled plate 4 is located at the bottom of the battery pack 9. The water-cooled plate 4 cools the battery pack 9 components, improving the heat dissipation effect.

[0027] Specifically, the upper end of the hollow tube 11 on the outer periphery of the frame 1 is provided with multiple first studs 5, and the lower end of the hollow tube 11 on the outer periphery of the frame 1 is provided with multiple second studs 6. The multiple studs on each hollow tube 11 improve the connection strength. Specifically, the wall thickness of the hollow tube 11 is 1.5mm.

[0028] Specifically, the water-cooled plate 4 includes a first plate 41 and a second plate 42. The first plate 41 is provided with a water channel groove. The second plate 42 is welded and fixed to the first plate 41 and is sealed to the first plate 41. The second plate 42 covers the water channel groove so that the water channel groove forms a cooling water flow channel 43.

[0029] Specifically, the upper cover plate 2 has a first mounting hole 21 corresponding to the first stud 5, and the first stud 5 passes through the first mounting hole 21 and is threadedly connected to the first nut 7; the lower tray 3 has a second mounting hole 31 corresponding to the second stud 6, and the second stud 6 passes through the second mounting hole 31 and is threadedly connected to the second nut 8.

[0030] Specifically, a first sealing groove 22 is formed on the side of the upper cover plate 2 near the hollow tube 11, and a first sealing ring 23 is disposed in the first sealing groove 22. The first sealing ring 23 is annular and fits around the upper end surface of the frame 1. The upper cover plate 2 and the frame 1 are sealed together by the first sealing ring 23. A second sealing groove 32 is formed on the side of the lower tray 3 near the hollow tube 11, and a second sealing ring 33 is disposed in the second sealing groove 32. The second sealing ring 33 is annular and fits around the lower end surface of the frame 1. The lower tray 3 and the frame 1 are sealed together by the second sealing ring 33. The first sealing ring 23 and the second sealing ring 33 keep the cavity enclosed by the upper cover plate 2, the frame 1, and the lower cover plate in a sealed state.

[0031] It should be noted that this structure can also be used for the sealed installation of similar battery pack products.

[0032] The parts not covered in this technical solution can be implemented using existing technologies.

[0033] The foregoing has shown and described the basic principles, main features, and characteristics of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model includes the appended claims and their equivalents.

Claims

1. A new energy battery tray structure, characterized in that: The system includes a frame (1), an upper cover plate (2), and a lower tray (3). The frame (1) is made of hollow tubes (11) spliced ​​together. The lower tray (3) is provided at the bottom of the frame (1). A battery pack (9) is provided inside the frame (1). The upper cover plate (2) is provided above the battery pack (9). A first stud (5) is welded to the upper end of the frame (1). A second stud (6) is welded to the lower end of the frame (1). The first stud (5) passes through the upper cover plate (2) and is connected to a first nut (7) to lock the upper cover plate (2) to the upper end of the frame (1). The second stud (6) passes through the lower tray (3) and is threadedly connected to a second nut (8) to lock the lower tray (3) to the frame (1).

2. The new energy battery tray structure according to claim 1, characterized in that: A water-cooled plate (4) is provided on the lower tray (3), and the water-cooled plate (4) is located at the bottom of the battery pack (9).

3. The new energy battery tray structure according to claim 1, characterized in that: Multiple first studs (5) are provided at the upper end of the hollow tube (11) around the outer periphery of the frame (1), and multiple second studs (6) are provided at the lower end of the hollow tube (11) around the outer periphery of the frame (1).

4. The new energy battery tray structure according to claim 2, characterized in that: The water-cooled plate (4) includes a first plate (41) and a second plate (42). The first plate (41) is provided with a water channel groove. The second plate (42) is welded and fixed to the first plate (41) and sealed to the first plate (41). The second plate (42) covers the water channel groove so that the water channel groove forms a cooling water flow channel (43).

5. The new energy battery tray structure according to claim 1, characterized in that: The wall thickness of the hollow tube (11) is 1.5 mm.

6. The new energy battery tray structure according to claim 1, characterized in that: The upper cover plate (2) has a first mounting hole (21) corresponding to the first stud (5), and the first stud (5) passes through the first mounting hole (21) and is threaded to the first nut (7); the lower tray (3) has a second mounting hole (31) corresponding to the second stud (6), and the second stud (6) passes through the second mounting hole (31) and is threaded to the second nut (8).

7. The new energy battery tray structure according to claim 1, characterized in that: The upper cover plate (2) has a first sealing groove (22) on the side near the hollow tube (11), and a first sealing ring (23) is provided in the first sealing groove (22). The first sealing ring (23) is annular and fits around the upper surface of the frame (1). The upper cover plate (2) and the frame (1) are sealed together by the first sealing ring (23). The lower tray (3) has a second sealing groove (32) on the side near the hollow tube (11), and a second sealing ring (33) is provided in the second sealing groove (32). The second sealing ring (33) is annular and fits around the lower surface of the frame (1). The lower tray (3) and the frame (1) are sealed together by the second sealing ring (33).

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