Draw-bar box type battery

Abstract

The utility model relates to a draw-bar box type battery which comprises a draw-bar trolley, an accommodating box and a battery pack, the pull rod trolley comprises an underframe and a pull rod frame, one side of the underframe is connected with the bottom of the pull rod frame to form an L shape, a pull rod is arranged at the top end of the pull rod frame, and stair climbing wheels are arranged on the lower portion of the back face of the pull rod frame. The containing box is a rectangular box body with an opening in the top, the bottom of the containing box is placed on a bottom frame of the pull rod trolley, the bottom of the containing box is fixed to the bottom frame through a detachable connecting piece matched with a bolt, one side wall of the containing box abuts against a pull rod frame of the pull rod trolley, and the side wall of the containing box is fixed to the pull rod frame through a detachable connecting piece matched with a bolt. The battery pack is embedded into the cavity of the containing box from the open end of the containing box and fixedly connected with the containing box through bolts. According to the utility model, the split type structural design is adopted, various requirements can be met through the fact that one vehicle is matched with multiple types of battery modules, the manufacturing cost can be reduced, and the obstacle crossing function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a trolley case type battery. Background Art

[0002] Portable power supplies are often used as backup power supplies for communication base stations to provide emergency power supply in the event of a sudden power outage. In order to facilitate the portable movement of portable power supplies, many designs in the prior art design the portable power supplies into a trolley box structure. For example, the utility model patent with the announcement number CN218731478U discloses a "trolley box battery pack", which sets a pulley at the bottom of the chassis, sets a pull rod at the back of the chassis, embeds the battery pack into the chassis, and realizes the portable movement of the battery pack by pulling the chassis. Many design schemes in the prior art mostly design the wheels and pull rods directly on the chassis or on the battery pack, that is, a fixed integrated structure design is adopted. In order to avoid collision with the battery pack due to shaking during movement, the chassis used to accommodate the battery pack is usually tailored according to the model and size of the battery pack, making this structural design not very versatile. For battery packs of different models, it is necessary to design a chassis corresponding to the size, which will inevitably cause cost waste. Utility Model Content

[0003] In order to make up for the deficiencies in the above-mentioned prior art, the utility model adopts a split structural design, which can meet various needs by adapting multiple types of battery modules to one vehicle, thereby helping to reduce manufacturing costs.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A trolley case battery, comprising:

[0006] A pull rod trolley; the pull rod trolley comprises a base frame and a pull rod frame, one side of the base frame is connected to the bottom of the pull rod frame to form an L shape, a pull rod is arranged at the top of the pull rod frame, and a climbing wheel is arranged at the lower part of the back of the pull rod frame;

[0007] A storage box; the storage box is a rectangular box with an open top, the bottom of the storage box is placed on the bottom frame of the pull rod trolley, the bottom of the storage box is fixed to the bottom frame by a detachable connecting piece and bolts, one side wall of the storage box is against the pull rod frame of the pull rod trolley, and the side wall of the storage box is fixed to the pull rod frame by a detachable connecting piece and bolts;

[0008] The battery pack is embedded in the cavity of the containing box from the open end of the containing box, and the battery pack is fixedly connected to the containing box by bolts.

[0009] Furthermore, the stair climbing wheels are arranged in two groups relatively to each other, and each group of stair climbing wheels has a three-wheel structure.

[0010] Furthermore, the two sets of stair climbing wheels are connected via a reinforcing connecting rod.

[0011] Furthermore, fixing holes are provided on the side walls and the bottom plate of the storage box. The side walls of the storage box are fixed to the pull rod frame through U-shaped connectors and bolts; the bottom plate of the storage box is fixed to the bottom frame through straight connectors and bolts.

[0012] Furthermore, a group of opposite side walls of the storage box are respectively provided with foldable handles.

[0013] Furthermore, a fixing flange is respectively provided on a set of relative inner walls at the open end of the top of the containing box, and a fixing hole is provided on the fixing flange; hanging ears are respectively provided on the two side edges of the battery pack panel, and a fixing hole is provided on the hanging ears. After the battery pack is inserted into the containing box, the bottom surface of the hanging ear contacts the top surface of the fixing flange, and bolts are inserted into the fixing holes to fix the battery pack to the containing box.

[0014] Furthermore, a handle is provided on the panel of the battery pack.

[0015] Furthermore, the inner wall of the containing box is provided with a flame retardant foam layer.

[0016] The utility model designs a trolley with a pull rod, a storage box for embedding a battery pack, and a battery pack into three split structures, which are fixedly connected to each other in a detachable manner, which not only ensures the stability of the connection during movement, but also facilitates the maintenance or replacement and disassembly of the battery pack; the split structural design allows the trolley to be adapted to multiple types of battery packs in one vehicle, which can meet the portable movement of battery packs of different types and help reduce manufacturing costs; and the bottom of the trolley adopts a climbing wheel design, which has the function of climbing stairs and overcoming obstacles during the transportation of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the assembled trolley box type battery in the embodiment;

[0018] Figure 2 It is a structural schematic diagram of the drawbar trolley;

[0019] Figure 3 It is a structural schematic diagram of the fixed connection part between the receiving box and the pull rod trolley;

[0020] Figure 4 It is a structural schematic diagram of the containing box;

[0021] Figure 5 A schematic diagram of the battery pack structure.

[0022] Description of Figure Numbers:

[0023] 1. Trolley; 11. Trolley; 12. Trolley frame; 13. Climbing wheel; 14. Base frame; 2. Storage box; 21. Fixing hole; 22. Fixing flange; 23. Fixing hole; 3. Battery pack; 31. Hanging ear; 32. Bolt; 33. Handle; 4. Handle; 5. U-shaped connector; 6. Straight connector. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] This embodiment discloses a trolley case type battery, such as Figures 1 to 5 As shown, it is mainly composed of a pull rod trolley 1, a container box 2 and a battery pack 3. The above three parts are independent components and are assembled to form Figure 1 The portable battery pack shown in the figure is described in detail below with reference to the accompanying drawings.

[0026] like Figure 2 As shown, the main structure of the pull rod trolley 1 is an L-shaped bracket. Figure 2 The direction shown is for reference. The horizontal part of the L-shaped bracket is the base frame 14, and the vertical part is the rod frame 12. The base frame 14 is a rectangular frame structure formed by connecting vertical and horizontal support rods. The rod frame 12 is also a frame structure. The top of the rod frame 12 is a horizontally arranged rod 11, and the bottom end of the rod frame 12 is vertically connected to the frame of the base frame 14. The middle part of the rod frame 12 is connected by vertical and horizontal support rods to form a fixed connection part for fixing the storage box 2. Wheel mounting parts are relatively provided on the two side frames of the lower end of the rod frame 12, and the wheel mounting parts extend to the side away from the base frame 14. A three-wheel climbing wheel 13 is provided at the end of each wheel mounting part. In order to strengthen the supporting force of the climbing wheel 13, this embodiment also sets a reinforcing connecting rod between two opposite climbing wheels 13 for connection.

[0027] The design of the pull rod trolley 1 is further optimized. Considering the convenience of storage of the pull rod trolley 1, the connection between the bottom frame 14 and the pull rod frame 12 can also be designed as a hinged structure. The bottom frame 14 can be folded up and closed with the pull rod frame 12 by rotation to reduce the space occupied. For the same purpose, the upper half of the pull rod frame 12 (i.e., the section with the pull rod 11) can also be designed as a retractable structure relative to the middle section where the fixed connection part is located, which also helps to reduce the space occupied and facilitate storage when not in use.

[0028] like Figure 3 and Figure 4As shown, the container box 2 is a rectangular box with an open top, and the cavity inside the box is used to embed the battery pack 3. The container box 2 in this embodiment can meet the embedding of 4U / 6U standard lithium battery packs. In order to avoid collision between the container box 2 and the battery pack 3 during movement, and to reduce the vibration impact on the battery pack 3 during movement, a flame retardant foam layer is arranged around the inner wall of the container box 2 to play the role of vibration reduction, collision prevention and fire prevention. A fixing hole 21 is provided on the side wall of the container box 2 close to the pull rod frame 12, and a fixing hole is also provided on the bottom plate of the container box 2 opposite to the open end. Foldable handles 4 are symmetrically installed on the side walls of the side wall where the fixing hole 21 is located. When encountering obstacles that the climbing wheels 13 of the pull rod trolley 1 cannot cross, the handles 4 can be used to achieve manual assistance in crossing the obstacles. A fixing flange 22 is provided on the inner wall of the side wall with the handle 4 close to the open end. The fixing flange 22 is an L-shaped structure, and a fixing hole 23 is provided on the top surface of the fixing flange 22.

[0029] like Figure 5 As shown, the two side edges of the battery pack 3 panel are respectively provided with hanging ears 31, fixing holes are provided on the hanging ears 31, and a handle 33 is provided on one end of the panel close to the hanging ears 31.

[0030] The above-mentioned trolley 1 and storage box 2 are assembled by sheet metal parts, which can improve the load-bearing effect. When assembling the trolley 1, storage box 2, and battery pack 3, refer to Figure 1 and Figure 3 As shown, the storage box 2 is first placed on the bottom frame 14 of the trolley 1, and a straight bar type connector 6 is added between the bottom plate of the storage box 2 and the bottom frame 14, and the bottom plate of the storage box 2, the straight bar type connector 6, and the bottom frame 14 are fixed by bolts. A U-shaped connector 5 is arranged on the side wall of the storage box 2 with a fixing hole 21, and the U-shaped connector 5 is installed at the fixing hole 21 by bolts, and fixing holes are provided on the side panels of the U-shaped connector 5 and the support rod of the fixed connection part of the trolley 1, and the panels on both sides of the U-shaped connector 5 are fixed to the support rod of the fixed connection part of the trolley 1 by bolts. After completing the fixed assembly of the storage box 2 and the trolley 1, the battery pack 3 is embedded into the inner cavity from the open end of the storage box 2, so that the bottom surface of the ear 31 of the battery pack 3 is placed on the top surface of the fixing flange 22 of the storage box 2, and the bolts 32 are inserted into the fixing holes of the ear 31 and the fixing holes 23 of the fixing flange 22, so as to fix the battery pack 3 and the storage box 2.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trolley case battery, characterized in that: include: A pull rod trolley; the pull rod trolley comprises a base frame and a pull rod frame, one side of the base frame is connected to the bottom of the pull rod frame to form an L shape, a pull rod is arranged at the top of the pull rod frame, and a climbing wheel is arranged at the lower part of the back of the pull rod frame; A storage box; the storage box is a rectangular box with an open top, the bottom of the storage box is placed on the bottom frame of the pull rod trolley, the bottom of the storage box is fixed to the bottom frame by a detachable connecting piece and bolts, one side wall of the storage box is against the pull rod frame of the pull rod trolley, and the side wall of the storage box is fixed to the pull rod frame by a detachable connecting piece and bolts; The battery pack is embedded in the cavity of the containing box from the open end of the containing box, and the battery pack is fixedly connected to the containing box by bolts.

2. A trolley case battery according to claim 1, characterized in that: The stair climbing wheels are arranged in two groups opposite to each other, and each group of stair climbing wheels has a three-wheel structure.

3. A trolley case battery according to claim 2, characterized in that: The two sets of stair climbing wheels are connected via a reinforcing connecting rod.

4. A trolley case battery according to claim 1, characterized in that: The side walls and bottom plate of the storage box are both provided with fixing holes. The side walls of the storage box are fixed to the pull rod frame through U-shaped connectors and bolts; the bottom plate of the storage box is fixed to the bottom frame through straight connectors and bolts.

5. The trolley case battery according to claim 1, characterized in that: A group of opposite side walls of the containing box are respectively provided with foldable handles.

6. A trolley case battery according to claim 1, characterized in that: A set of relative inner walls at the open end of the top of the containing box are respectively provided with fixing flanges, and fixing holes are provided on the fixing flanges; the two side edges of the battery pack panel are respectively provided with hanging ears, and fixing holes are provided on the hanging ears. After the battery pack is inserted into the containing box, the bottom surface of the hanging ears contacts the top surface of the fixing flanges, and bolts are inserted into the fixing holes to fix the battery pack to the containing box.

7. The trolley case battery according to claim 1, characterized in that: A handle is provided on the panel of the battery pack.

8. The trolley case battery according to claim 1, characterized in that: The inner wall of the containing box is provided with a flame retardant foam layer.

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