Quick-mounting structure for lithium battery of electric vehicle

Abstract

The utility model discloses an electric vehicle lithium battery fast mounting structure which comprises a battery bottom frame and a battery protection frame, side plates are arranged on the two sides of the battery protection frame, telescopic clamping plates are arranged on the inner sides of the side plates, fixing pieces are arranged between the clamping plates and the side plates, and battery piles are stacked in the battery bottom frame to be connected in series. The battery protection frame is placed above a battery pack, the clamping plates are located on the two sides of the battery pack, the positions of the batteries are adjusted so that the batteries can make contact with one another, the telescopic clamping plates can be automatically attached to the outer side of the battery pack in the adjusting process, the positions of the clamping plates are fixed through the fixing pieces after the positions of the batteries are adjusted, the clamping plates cannot move outwards, and therefore the batteries are limited; the battery is prevented from shaking in the running process, the stability is improved, the battery pack connected in series, the battery underframe and the battery protection frame are placed in the battery cavity, the first mounting opening and the second mounting opening are aligned to protection frame mounting screw openings in an electric vehicle and fixed through screws, and then mounting can be completed quickly and conveniently.

Description

Technical Field

[0001] The utility model relates to the field of electric motorcycles, in particular to a quick installation structure for lithium batteries of electric vehicles. Background Art

[0002] An electric vehicle is driven by a battery pack composed of multiple batteries. When repairing and replacing the batteries, it is necessary to stack multiple batteries in the battery cavity of the electric vehicle and connect them in series in sequence through battery connection wires. In order to reduce the gap between the battery cavity and the batteries when placing the battery pack, fillers will be inserted to prevent the batteries from shaking and colliding during driving. After the battery pack is installed, it is necessary to install a battery protection cover to fix the battery pack. When connecting the battery pack in series, it is necessary to bend down and operate in the battery cavity, which is rather inconvenient. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a quick installation structure for lithium batteries of electric vehicles.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a quick installation structure for lithium batteries of electric vehicles, including a battery chassis and a battery protection frame. Side plates are arranged on both sides of the battery protection frame. Retractable clamping plates are arranged on the inner sides of the side plates. Fixing parts are arranged between the clamping plates and the side plates. The bottom of the side plates extends forward to form mounting pieces. First mounting holes are arranged on the mounting pieces. The top of the battery chassis extends outward to form an outer edge. Second mounting holes matching the first mounting holes are arranged on the outer edge.

[0005] Further, the fixing parts include fixing screws and square anti-loosening pieces. The ends of the fixing parts abut against the clamping plates. Fixing threaded holes are arranged on the side plates. The fixing screws are threadedly connected with the fixing threaded holes. The anti-loosening pieces are threadedly connected with the fixing screws. The anti-loosening pieces are in contact with the inner sides of the side plates.

[0006] Further, a support piece is threadedly connected to the end of the fixing screw.

[0007] Further, positioning inner cylinders are arranged on the inner sides of the side plates. Positioning outer cylinders are arranged on the clamping plates and cover the positioning inner cylinders.

[0008] Further, clamping springs are arranged in the positioning inner cylinders.

[0009] Further, a limiting groove is arranged on the outer edge in front of the second mounting hole. The front end of the mounting piece is placed in the limiting groove. The first mounting hole is directly above the second mounting hole.

[0010] The beneficial effects of the present utility model are as follows: First, connect the battery packs in series on the battery chassis, and then quickly place the connected battery packs together with the battery chassis into the battery cavity of the electric vehicle. There is no need to bend down to complete the series connection of the battery packs inside the battery cavity, which is more convenient. Moreover, by setting the clamping plates and fixing parts, the battery packs can be clamped, and there is no need to additionally insert fillers to prevent the battery packs from shaking during driving, thus increasing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the whole of the present utility model.

[0012] Figure 2 is Figure 1 Schematic diagram of part A in

[0013] Figure 3 It is a top view of the present utility model.

[0014] Figure 4 It is a cross-sectional view of the present utility model.

[0015] In the figure: 1. Battery chassis; 11. Outer edge; 12. Limit groove; 2. Battery protection frame; 21. Mounting piece; 22. First mounting hole; 3. Battery; 4. Side plate; 41. Positioning inner cylinder; 5. Clamping plate; 51. Positioning outer cylinder; 6. Fixing screw; 61. Support piece; 62. Lock washer; 7. Clamping spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further elaborates on the present utility model with reference to the drawings: A quick-installation structure for lithium batteries of an electric vehicle includes a battery chassis 1 and a battery protection frame 2. Side plates 4 are provided on both sides of the battery protection frame 2. A retractable clamping plate 5 is provided inside the side plates 4. A fixing part is provided between the clamping plate 5 and the side plates 4. The batteries 3 are placed in the battery chassis 1 for series connection. The battery protection frame 2 is placed above the battery packs. The clamping plates 5 are located on both sides of the battery packs. Adjust the position of the batteries 3 so that the batteries are in contact with each other. During the adjustment process, the retractable clamping plates 5 will automatically fit the outer sides of the battery packs. After adjusting the position of the batteries, fix the position of the clamping plates 5 through the fixing part, so that the clamping plates cannot move outwards, thereby restricting the batteries and preventing the batteries from shaking during driving, increasing stability. The bottom of the side plate 4 extends forward to form a mounting piece 21. A first mounting hole 22 is provided on the mounting piece 21. The top of the battery chassis 1 extends outwards to form an outer edge 11. A second mounting hole matching the first mounting hole 22 is provided on the outer edge. Place the series-connected battery packs together with the battery chassis 1 and the battery protection frame 2 into the battery cavity. Align the first mounting hole 22 and the second mounting hole with the mounting screw holes of the protection frame on the electric vehicle, and fix them with screws, then the fixation of the battery chassis 1 and the battery protection frame 2 can be completed, and the installation is quick.

[0017] Further, the fixing member includes a fixing screw 6 and a square anti-loosening piece 62. A fixing threaded hole is provided on the side plate 4. The fixing screw 6 is threadedly connected to the fixing threaded hole. After adjusting the position of the battery, the fixing screw 6 is screwed inward so that the end of the fixing member abuts against the clamping plate 5 to prevent the clamping plate 5 from shrinking backward. The anti-loosening piece 62 is threadedly connected to the fixing screw 6. The anti-loosening piece 62 is rotated outward to contact the inner side of the side plate 4. The anti-loosening piece 62 can prevent the fixing screw 6 from loosening and increase the stability.

[0018] Further, a support piece 61 is threadedly connected to the end of the fixing screw 6. The support piece 61 prevents the fixing screw 6 from being pulled out of the fixing threaded hole and can prevent the fixing screw 6 from tilting.

[0019] Further, two positioning inner cylinders 41 are provided on the inner side of the side plate 4. A positioning outer cylinder 51 is provided on the clamping plate 5 and is sleeved on the positioning inner cylinder 41 so that the clamping plate 5 moves axially along the positioning inner cylinder 41.

[0020] Further, a clamping spring 7 is provided in the positioning inner cylinder 41. The clamping plate 5 expands and contracts through the clamping spring 7. When installing the battery protection frame 2, the clamping spring 7 contracts and controls the clamping plate 5 to fit against the outer side of the battery pack.

[0021] Further, a limiting groove 12 is provided on the outer edge 11 of the front side of the second installation opening. The installation portion 21 is placed into the limiting groove 12 to complete preliminary fixation. At this time, the first installation opening 22 is located directly above the second installation opening, facilitating the alignment of the first installation opening 22 and the second installation opening, and thus facilitating subsequent fixation by screws on the protection frame installation opening of the electric vehicle.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-install structure for lithium batteries in electric vehicles, characterized in that It includes a battery base frame and a battery protection frame, wherein side panels are arranged on both sides of the battery protection frame, a retractable clamping plate is arranged on the inner side of the side panel, a fixing piece is arranged between the clamping plate and the side panel, the bottom of the side panel extends forward to form a mounting plate, a first mounting opening is arranged on the mounting plate, the top of the battery base frame extends outward to form an outer edge, a second mounting opening matching the first mounting opening is arranged on the outer edge.

2. The electric vehicle lithium battery quick-install structure according to claim 1, characterized in that The fixing part includes a fixing screw and a square anti-loosening piece. The end of the fixing part abuts against the clamping plate. The side plate is provided with a fixing threaded opening. The fixing screw is threadedly connected to the fixing threaded opening. The anti-loosening piece is threadedly connected to the fixing screw. The anti-loosening piece contacts the inner side of the side plate.

3. The electric vehicle lithium battery quick-install structure according to claim 2, characterized in that The end of the fixing screw is threadedly connected with a supporting sheet.

4. The electric vehicle lithium battery quick-install structure according to claim 1, characterized in that A positioning inner cylinder is arranged on the inner side of the side plate, and a positioning outer cylinder is arranged on the clamping plate and covers the positioning inner cylinder.

5. The electric vehicle lithium battery quick-install structure according to claim 4, characterized in that A clamping spring is arranged in the positioning inner cylinder.

6. The electric vehicle lithium battery quick-install structure according to claim 1, characterized in that A limiting groove is arranged on the outer edge of the front side of the second installation opening, the front end of the installation piece is placed in the limiting groove, and the first installation opening is located directly above the second installation opening.

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