Overhead battery fixing device

Abstract

The utility model aims to provide the overhead battery fixing device, which adopts an assembled structure, is simple in structure and convenient to install, is favorable for improving the sealing performance of a top cover skin, and effectively improves the external direct impact resistance of an overhead battery. The battery fixing device comprises a top cover and a battery fixing assembly, the battery fixing assembly comprises two battery packs and two battery supports, the two battery supports are arranged at the upper end of the top cover in parallel, inner flanges are arranged on the inner sides of the two battery supports, and the two battery packs are arranged between the two battery supports in parallel. The tops of the two ends of the two battery supports are both provided with end reinforcing beams, and the tops of the middle ends of the two battery supports are provided with middle reinforcing beams. The power storage battery pack is applied to the technical field of power storage battery packs.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of top-mounted battery fixing devices, especially top-mounted battery fixing devices. BACKGROUND

[0002] Current most low-floor bus models top-mounted battery adopts the installation mode of integral tray support, specifically is that multiple battery packs are installed on a bracket, and then the installed integral top-mounted battery assembly is hoisted to the top cover by hoisting equipment, and finally an integral battery cover is installed to cover the top-mounted battery.For the way of installing top-mounted battery by integral tray support, large hoisting equipment is needed to complete the one-time installation of integral top-mounted battery assembly.The structure is not convenient for subsequent maintenance work, even if individual battery packs can be removed from the top cover, but the operation process is more complicated, and it is a high-altitude operation, and there are certain safety hazards in the process of disassembly and repair.

[0003] For the structure of installing top-mounted battery by integral tray support, most manufacturers need to weld and install the fixing bracket by connecting a special bracket on the top cover skeleton, and the tray support is fixed by a screw rod welded from the inner skeleton to the top cover skin.The structure destroys the local integrity of the top cover skin.If the screw rod hole is not sealed well or the sealing glue at the screw rod hole cracks after a long time of use, water leakage may occur in the roof.If the sealing performance of this structure is to be good, the screw rod welding bracket upper surface, top cover skin and tray support mounting foot lower surface must be mutually parallel and attached, which is difficult to process.Even if the mutual parallelism and attachment of the above three can be handled, due to the weight of a single top-mounted battery pack approaching 200 kg, the body vibration during vehicle driving and the interaction of the weight of the battery assembly on the integral tray support, plastic deformation may occur at the connection between the top cover and the tray support, reducing the attachment of the screw rod welding bracket upper surface, top cover skin and tray support mounting foot lower surface, which may cause the sealing failure of the top cover skin screw rod hole over time.

[0004] Most buses with integral tray support for installing top-mounted battery also need to install a small inclined strut between the top cover beam near the top-mounted battery and the side wall column to strengthen the longitudinal structural strength of the local top cover skeleton.The inclined strut will extend into the air conditioning duct inside the vehicle, which increases the installation difficulty of the duct cotton and increases the resistance of the front and rear air supply in the duct.

[0005] The utility model discloses a kind of overhead battery bracket and the structure of the utility model patent with patent announcement No.CN 213442060 U a kind of passenger car overhead multi-box battery fixing device are all traditional integral tray support, and the fixing structure of the above two overhead batteries all has the above problem.

[0006] The utility model discloses a kind of overhead battery bracket and the structure of the utility model patent with patent announcement No.CN 221466680 U a kind of overhead battery device are all traditional integral tray support.The integral tray support thereof is mainly to install and fix multiple battery packs integrally on roof, cannot additionally play the role of protecting the upper part of overhead battery from impact, cannot weaken the damage when overhead battery position suffers direct impact.The dismounting work of overhead battery must be assisted by large hoisting equipment, there is the difficult problem of dismounting due to imperfect site and equipment.

[0007] Therefore, it is necessary to provide an overhead battery fixing device, which adopts a spliced structure, is simple in structure and convenient to install, is beneficial to improve the sealing performance of the top cover skin, and effectively improves the anti-external direct impact capability of the overhead battery. Utility model content

[0008] The utility model solves the technical problems of overcoming the deficiencies of the prior art, and provides an overhead battery fixing device, which adopts a spliced structure, is simple in structure and convenient to install, is beneficial to improve the sealing performance of the top cover skin, and effectively improves the anti-external direct impact capability of the overhead battery.

[0009] The technical scheme adopted by the utility model is as follows: the utility model includes a top cover and a battery fixing assembly, the battery fixing assembly includes two groups of battery packs and two groups of battery supports, the two groups of battery supports are arranged in parallel at the upper end of the top cover, the inner sides of the two groups of battery supports are each provided with an inward flange, the two groups of battery packs are arranged side by side between the two groups of battery supports and are connected and fixed with the inward flanges through fasteners, the top of each end of the two groups of battery supports is provided with an end reinforcing beam, and the top of the middle of the two groups of battery supports is provided with a middle reinforcing beam.

[0010] As can be seen from the above scheme, the disassembly and assembly process of this application is relatively simple. During the installation process, after the battery fixing assembly is installed on the ground, a small hoisting device is used to hoist the battery fixing assembly to the roof of the vehicle for installation. Installers only need to stand on either side of the vehicle body, less than 2 meters high, using ladders or platforms to complete the installation of the roof-mounted battery, eliminating the need to climb onto the roof and reducing the safety risks for installers. The end reinforcing beams and the middle reinforcing beams strengthen the structural strength of the battery fixing assembly, improving its impact and compression resistance at the middle or end positions, further reducing safety hazards.

[0011] In a preferred embodiment, the end reinforcing beam is a sheet metal part with a channel steel structure. The end reinforcing beam has a first fixing hole, which is fixed to the top of the battery bracket by fasteners. The end reinforcing beam has a long flange and a short flange on both sides, with the long flange facing inward above the battery bracket and the short flange facing outward above the battery bracket.

[0012] In a preferred embodiment, the central reinforcing beam is a sheet metal part with a channel steel structure, the central reinforcing beam has a second fixing hole, the second fixing hole is fixed above the battery bracket by fasteners, and both sides of the central reinforcing beam are provided with outward flanges.

[0013] In a preferred embodiment, the top cover includes a top cover skin, and side beams are provided on both the left and right sides of the top cover skin. The outer side of the side beams is an arc-shaped structure, and a connecting bracket is welded to the arc-shaped structure. A first mounting hole is provided on the top of the connecting bracket, and the first mounting hole is connected to the battery bracket by a fastener.

[0014] In a preferred embodiment, the inner flange is provided with a second mounting hole, and the battery pack is connected and fixed to the second mounting hole by fasteners.

[0015] A preferred embodiment is that the inner flange has a wire hole and a lifting hole.

[0016] A preferred embodiment is that the battery holder is an isosceles trapezoidal structure.

[0017] In a preferred embodiment, the same end of the two sets of battery fixing assemblies shares a set of end reinforcing beams, and each set of battery fixing assemblies is connected to a set of middle reinforcing beams. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is an exploded three-dimensional structural diagram of this utility model;

[0020] Figure 3 This is a three-dimensional structural schematic diagram of the end reinforcement beam.

[0021] Figure 4 This is a three-dimensional structural diagram of the central reinforcing beam.

[0022] Figure 5 This is a three-dimensional structural diagram of the top cover;

[0023] Figure 6 This is a three-dimensional structural diagram of the connecting bracket;

[0024] Figure 7 This is a three-dimensional structural diagram of the battery bracket;

[0025] Figure 8 This is a three-dimensional structural diagram of the connecting bracket on the top cover;

[0026] Figure 9 This is a schematic diagram of the structure for the installer to install the battery fixing assembly. Detailed Implementation

[0027] like Figure 1 , Figure 2 as well as Figure 9 As shown, in this embodiment, the present invention includes a top cover 1 and a battery fixing assembly. The battery fixing assembly includes two sets of battery packs 3 and two sets of battery brackets 4. The two sets of battery brackets 4 are arranged parallel to each other on the upper end of the top cover 1. The inner sides of the two sets of battery brackets 4 are provided with inner flanges 5. The two sets of battery packs 3 are arranged side by side between the two sets of battery brackets 4 and are connected and fixed to the inner flanges 5 by fasteners. The top of both ends of the two sets of battery brackets 4 are provided with end reinforcing beams 6, and the top of the middle of the two sets of battery brackets 4 is provided with a middle reinforcing beam 7.

[0028] The top cover 1 is welded to the vehicle roof. After installing the battery mounting assembly on the ground, installers use small hoisting equipment to lift the battery mounting assembly to the roof for installation. Installers only need to stand on the sides of the vehicle less than 2 meters high using ladders or platforms to complete the installation of the roof-mounted battery, without having to climb onto the roof, reducing the safety risks for installers. Finally, a roof-mounted battery cover is installed on top of the battery mounting assembly, providing double protection. The central reinforcing beam 7 prevents the roof-mounted battery cover from being squeezed downwards in the event of a severe impact, improving the impact and compression resistance of the middle part of the battery mounting assembly. The end reinforcing beams 6 prevent the roof-mounted battery cover from being squeezed downwards in the event of a severe impact from the top and sides, improving the impact and compression resistance of the two ends of the battery mounting assembly.

[0029] likeFigure 3 As shown, in this embodiment, the end reinforcing beam 6 is a sheet metal part with a channel steel structure. The end reinforcing beam 6 has a first fixing hole 8, which is fixed above the battery bracket 4 by fasteners. The two sides of the end reinforcing beam 6 are respectively provided with a long flange 9 and a short flange 10. The long flange 9 is set inward above the battery bracket 4, and the short flange 10 is set outward above the battery bracket 4.

[0030] The long flange 9 and the short flange 10 strengthen the structural strength at both ends of the battery fixing assembly. During assembly, the short flange 10 needs to be arranged outwards to avoid the frame of the top battery cover. The end reinforcing beam 6 connects and fixes the ends of two adjacent sets of battery fixing assemblies together, strengthening the structural strength at both ends of the two adjacent sets of battery fixing assemblies. It also prevents the top battery cover from being squeezed downwards in the event of a severe impact from above and to the sides, improving the impact and compression resistance of the battery fixing assembly at both ends.

[0031] like Figure 4 As shown, in this embodiment, the central reinforcing beam 7 is a sheet metal part with a channel steel structure. The central reinforcing beam 7 has a second fixing hole 11, which is fixed above the battery bracket 4 by fasteners. Both sides of the central reinforcing beam 7 are provided with outward flanges 12.

[0032] The outward flange 12 can strengthen the structural strength of the middle part of the battery fixing assembly, and at the same time, it can help to compress downwards when the top of the battery cover is subjected to a severe impact, thereby improving the impact and compression resistance of the middle part of the battery fixing assembly.

[0033] like Figures 5 to 8 As shown, in this embodiment, the top cover 1 includes a top cover skin 13. Side beams 14 are provided on both the left and right sides of the top cover skin 13. The outer side of the side beams 14 is an arc surface structure. A connecting bracket 15 is welded to the arc surface structure. A first mounting hole 16 is provided on the top of the connecting bracket 15. The first mounting hole 16 is connected to the battery bracket 4 by fasteners.

[0034] The side beam 14 is an irregularly shaped side beam, and the connecting bracket 15 is welded to the side beam 14. The inner side of the side beam 14 is designed with a stop for overlapping the top cover skin 13. The connecting bracket 15 overlaps with the outer arc-shaped surface of the side beam 14, ensuring the integrity of the top cover skin 13. The first mounting hole 16 is used to install and fix the battery bracket 4 assembly, that is, to install and fix the installed battery fixing assembly onto the connecting bracket 15. This mounting structure can directly distribute the weight of the battery pack 3 onto the side beam 14, relatively improving the longitudinal stiffness of the battery fixing assembly and effectively reducing the vibration amplitude of the top-mounted battery during driving. At the same time, it eliminates the need to specially attach a frame for the top-mounted battery to the frame of the top cover 1, greatly reducing the weight of the top cover frame.

[0035] like Figure 7 As shown, in this embodiment, the inner flange 5 is provided with a second mounting hole 17, and the battery pack 3 is connected and fixed to the second mounting hole 17 by fasteners.

[0036] The battery pack 3 is pressed against the upper surface of the inner flange 5, and then locked in from bottom to top at the second mounting hole 17 by the fastener, thus completing the connection and fixing operation of the battery pack 3 and the battery bracket 4.

[0037] like Figure 7 As shown, in this embodiment, the inner flange 5 has a wiring hole 18 and a lifting hole 19. The wiring hole 18 is used to arrange the battery pack power cables, and a small lifting device uses the lifting hole 19 to lift the battery fixing assembly to the roof for installation.

[0038] like Figure 7 As shown, in this embodiment, the battery bracket 4 is an isosceles trapezoidal structure. The battery bracket 4 is welded with three longitudinally arranged stiffeners to improve the longitudinal structural strength of the battery bracket assembly.

[0039] like Figures 1 to 4 As shown, in this embodiment, the same end of the two sets of battery fixing assemblies shares a set of end reinforcing beams 6, and each set of battery fixing assemblies is connected to a set of middle reinforcing beams 7. The end reinforcing beams 6 connect and fix the two ends of the two adjacent sets of battery fixing assemblies together, which helps to strengthen the structural strength of the two ends of the adjacent sets of battery fixing assemblies.

Claims

1. A top-mounted battery fixing device, characterized in that: It includes a top cover (1) and a battery fixing assembly. The battery fixing assembly includes two sets of battery packs (3) and two sets of battery brackets (4). The two sets of battery brackets (4) are arranged in parallel at the upper end of the top cover (1). The inner side of the two sets of battery brackets (4) is provided with an inner flange (5). The two sets of battery packs (3) are arranged side by side between the two sets of battery brackets (4) and are connected and fixed to the inner flange (5) by fasteners. The top of both ends of the two sets of battery brackets (4) is provided with an end reinforcing beam (6), and the top of the middle end of the two sets of battery brackets (4) is provided with a middle reinforcing beam (7).

2. The top-mounted battery fixing device according to claim 1, characterized in that: The end reinforcing beam (6) is a sheet metal part with a channel steel structure. The end reinforcing beam (6) has a first fixing hole (8). The first fixing hole (8) is fixed above the battery bracket (4) by fasteners. The end reinforcing beam (6) has a long flange (9) and a short flange (10) on both sides respectively. The long flange (9) is set inward above the battery bracket (4), and the short flange (10) is set outward above the battery bracket (4).

3. The top-mounted battery fixing device according to claim 1, characterized in that: The central reinforcing beam (7) is a sheet metal part with a channel steel structure. The central reinforcing beam (7) has a second fixing hole (11). The second fixing hole (11) is fixed above the battery bracket (4) by fasteners. Both sides of the central reinforcing beam (7) are provided with outward flanges (12).

4. The top-mounted battery fixing device according to claim 1, characterized in that: The top cover (1) includes a top cover skin (13), and side beams (14) are provided on both the left and right sides of the top cover skin (13). The outer side of the side beams (14) is an arc surface structure, and a connecting bracket (15) is welded to the arc surface structure. A first mounting hole (16) is provided on the top of the connecting bracket (15), and the first mounting hole (16) is connected to the battery bracket (4) by fasteners.

5. The top-mounted battery fixing device according to claim 1, characterized in that: The inner flange (5) has a second mounting hole (17), and the battery pack (3) is connected and fixed to the second mounting hole (17) by fasteners.

6. The top-mounted battery fixing device according to claim 1, characterized in that: The inner flange (5) has a wire hole (18) and a lifting hole (19).

7. The top-mounted battery fixing device according to claim 1, characterized in that: The battery bracket (4) is an isosceles trapezoidal structure.

8. The top-mounted battery fixing device according to claim 1, characterized in that: The two sets of battery fixing components share a set of end reinforcing beams (6) at the same end, and each set of battery fixing components is provided with a set of middle reinforcing beams (7).

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