Fixed mounting device for lithium battery of low-speed four-wheeler

Abstract

The utility model belongs to the field of low-speed new energy four-wheelers, and particularly discloses a fixing and mounting device for a lithium battery of a low-speed four-wheeler, which comprises a bottom limiting frame, a battery pack, a battery mounting bracket and a battery box body, the battery pack is installed on the upper end face of the bottom limiting frame. The battery mounting bracket is mounted on the outer sides of the upper end surface and four side surfaces of the battery pack, and the bottom limiting frame is connected with the battery mounting bracket through studs; the battery box body is mounted on the battery mounting bracket, the battery box body wraps the outer side of the battery pack, the upper end of the battery box body is connected with the battery box cover, and a driver seat and a passenger seat are arranged on the upper end surface of the battery box cover; according to the structure, on the basis of the lead-acid battery mounting structure, the lead-acid battery can be replaced by the lithium battery under the condition that vehicle body parts are not changed, so that the design cost is reduced, the production cost is reduced, and the competitiveness of products is improved.

Description

Technical Field

[0001] This utility model belongs to the field of low-speed new energy four-wheeled vehicles, specifically relating to a fixed installation device for lithium batteries in low-speed four-wheeled vehicles. Background Technology

[0002] With the increasing depletion of non-renewable energy sources, as well as the growing environmental pollution and urban traffic problems, new energy vehicles, mainly low-speed electric four-wheeled vehicles, are being used more and more widely.

[0003] Generally, existing low-speed electric four-wheeled vehicles often use lead-acid maintenance-free batteries as their power source. With the continuous maturation of lithium battery technology and the continuous reduction of lithium battery prices, the comprehensive advantages of lithium batteries over traditional lead-acid batteries are gradually becoming apparent. Specifically, this manifests in the following ways: (1) Low-speed four-wheeled vehicles with lead-acid battery configurations already sold on the secondary market will gradually be replaced with lithium batteries when the battery life expires, thereby improving the vehicle's power performance and driving range; (2) Low-speed four-wheeled vehicle manufacturers directly replace the power battery configuration from lead-acid batteries to lithium batteries when new vehicles leave the factory. The external structure of the battery pack of existing low-speed electric four-wheeled vehicles is still lead-acid maintenance-free batteries. How to replace the existing lead-acid batteries with lithium batteries is an urgent task at present. Utility Model Content

[0004] In view of the problems existing in the background art, the present invention provides a fixed installation device for lithium batteries of low-speed four-wheeled vehicles.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a fixing and mounting device for a lithium battery in a low-speed four-wheeled vehicle, comprising a bottom limiting frame, a battery pack, a battery mounting bracket, and a battery housing. The bottom limiting frame is mounted on the chassis of the four-wheeled vehicle. The battery pack is mounted on the upper surface of the bottom limiting frame, and the lower surface of the battery pack is adapted to the upper surface of the bottom limiting frame. The four sides of the battery pack are adapted to the inner surfaces of the bottom limiting frame. The battery mounting bracket is mounted on the upper surface and the four outer sides of the battery pack. The bottom limiting frame and the battery mounting bracket are connected by double-headed bolts. The battery housing is mounted on the battery mounting bracket and wraps around the outside of the battery pack. The upper end of the battery housing is connected to a battery cover, and a driver's seat and a passenger seat are provided on the upper surface of the battery cover.

[0006] The battery pack includes an upper box and a lower box, and a brim is provided on the connecting surface of the upper box and the lower box; a reinforcing rib is provided at the upper brim of the lower box, and the upper end face of the reinforcing rib contacts the lower end face of the brim; handles are provided on both sides of the lower box.

[0007] The bottom of the lower housing is provided with a rectangular opening groove.

[0008] The battery box cover is adapted to the battery box body, and the lower part of the battery box cover is designed with multiple support columns, which are in contact with the upper surface of the battery pack.

[0009] The battery box includes a left battery box body and a right battery box body. The upper ends of the left and right battery box bodies are connected to the battery mounting bracket by bolts, and the lower ends of the left and right battery box bodies are connected to the chassis of the four-wheeled vehicle by bolts.

[0010] The beneficial effects of this utility model are as follows: This utility model provides a fixed installation device for lithium batteries in low-speed four-wheeled vehicles. This structure can replace lead-acid batteries with lithium batteries without changing the vehicle body parts, based on the lead-acid battery installation structure. This greatly reduces design costs and production costs, thereby effectively improving the competitiveness of the product. Attached Figure Description

[0011] Figure 1 This is a 3D outline of the battery pack.

[0012] Figure 2 This is a rear view of the battery pack.

[0013] Figure 3 Battery pack installation diagram for the entire vehicle.

[0014] Figure 4 Schematic diagram of the rear of the battery pack.

[0015] In the diagram: 1. Upper housing, 2. Lower housing, 3. Cap brim, 4. Opening groove, 5. Handle, 6. Reinforcing rib, 7. Bottom limiting frame, 8. Battery pack, 9. Battery mounting bracket, 10. Double-ended bolt, 11. Nut, 12. Left side of battery box, 13. Right side of battery box, 14. Battery box cover, 15. Driver's seat, 16. Passenger seat, 17. Piping bundle. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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.

[0017] The following detailed description of the specific embodiments of this utility model, in conjunction with the accompanying drawings, further illustrates the following: A fixing and mounting device for a lithium battery in a low-speed four-wheeled vehicle includes a bottom limiting frame 7, a battery pack 8, a battery mounting bracket 9, and a battery housing. The bottom limiting frame 7 is mounted on the chassis of the four-wheeled vehicle. The battery pack 8 includes an upper housing 1 and a lower housing 2. A cap 3 is provided on the connecting surface of the upper housing 1 and the lower housing 2. The cap 3 is provided to meet the sealing requirements of the lithium battery pack and to facilitate the installation and fit of the battery pack 8 with the vehicle. A reinforcing rib 6 is provided at the upper cap 3 of the lower housing 2. The upper end face of the reinforcing rib 6 contacts the lower end face of the cap 3. The reinforcing rib 6 supports the battery mounting bracket 9. A battery housing is mounted on the battery mounting bracket 9. A driver's seat 15 is mounted on the left side 12 of the battery housing, and a passenger seat 16 is mounted on the right side 13 of the battery housing. The driver's seat 15 and the passenger seat 16 are connected to the left side 12 and the right side 13 of the battery housing via hinges. The seats can be upright or laid flat. A battery housing cover 14 is mounted on the left and right sides of the battery housing. The lower part of the battery housing cover 14 is designed with multiple support columns, which contact the upper surface of the battery pack. The driver's seat 15 and the passenger seat 16 are laid flat on the upper surface of the battery housing cover to support the weight of the driver and passenger. Handles 5 are provided on both sides of the lower housing 2 to facilitate the movement of the battery pack 8. A rectangular opening groove is provided at the bottom of the lower housing 2. 4. The opening groove 4 is for facilitating the insertion of the vehicle wiring harness, air conditioning system refrigerant lines, rear wheel disc brake system brake fluid lines, and other pipeline harnesses 17 from the bottom of the battery pack 8 and out from the rear of the four-wheeled vehicle; the battery pack 8 is mounted on the upper end face and inner limit face of the bottom limiting frame 7, and the lower end face of the battery pack 8 is adapted to the upper end face of the bottom limiting frame 7; the battery mounting bracket 9 is mounted on the upper end face and four outer sides of the battery pack 8, and the bottom limiting frame 7 and the battery mounting bracket 9 are connected by double-headed bolts 10; the battery mounting bracket 9 can restrict the movement of the battery pack 8 in four directions (front, back, left, and right), and the two sides of the battery mounting bracket 9 are fixed by four double-headed bolts 10, with the double-headed bolts 10... The square nut is welded to the chassis. The nut 11 above the double-ended bolt 10 is tightened after the battery mounting bracket 9 is installed in place. The front end of the battery mounting bracket 9 is installed on the cap 3 of the battery pack 8. The battery box is installed on the battery mounting bracket 9 and wraps around the outside of the battery pack 8. The battery box includes a left battery box 12 and a right battery box 13. The upper ends of the left battery box 12 and the right battery box 13 are connected to the battery mounting bracket 9 by bolts, and the lower ends of the left battery box 12 and the right battery box 13 are connected to the chassis of the four-wheeled vehicle by bolts. The battery box wraps around the outside of the battery pack 8 to protect the battery pack 8 from external damage and to make the interior of the four-wheeled vehicle more aesthetically pleasing.The upper end of the battery box is connected to the battery box cover 14. Multiple support pillars are designed on the lower surface of the battery box cover 14, and these pillars contact the upper surface of the battery pack. A driver's seat 15 and a passenger seat 16 are located on the upper surface of the battery box cover 14. The battery box cover 14 is adapted to the battery box and protects the battery pack 8 while also supporting the driver's seat 15 and the passenger seat 16. During vehicle use, the battery pack 8 can be exposed simply by opening the battery box cover 14, facilitating maintenance of the battery pack 8.

[0018] The usage process of this utility model is as follows: First, assemble the upper box 1, lower box 2, and cap 3 into a battery pack 8; then weld the bottom limiting frame 7 onto the chassis of the four-wheeled vehicle, and install the assembled battery pack 8 on the upper surface of the bottom limiting frame 7; insert the refrigerant pipes of the air conditioning system and the brake fluid pipes of the rear wheel disc brake system of the four-wheeled vehicle into the opening groove 4 at the bottom of the battery pack 8 and out from the rear of the four-wheeled vehicle; then install the battery mounting bracket 9 on the upper surface of the battery pack 8, and connect the bottom limiting frame 7 and the battery mounting bracket 9 together using double-ended bolts 10; then install the battery box body on the battery mounting bracket 9, wherein the upper end of the battery box body is connected to the battery mounting bracket 9 by bolts, and the lower end of the battery box body is connected to the chassis of the four-wheeled vehicle by bolts, so that the battery box body wraps around the outside of the battery pack 8; finally, install the battery box cover 14 on the upper surface of the battery box body, and install the driver's seat 15 and the passenger seat 16 on the upper surface of the battery box cover 14.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0020] The parts of this utility model not described in detail are existing technologies.

Claims

1. A fixed mounting device for low-speed four-wheeled vehicle lithium batteries, comprising a bottom limiting frame (7), a battery pack (8), a battery mounting bracket (9) and a battery box, characterized in that: The bottom limiting frame (7) is installed on the chassis of the four-wheeled vehicle, the battery pack (8) is installed within the limiting range of the bottom limiting frame (7), the lower end surface of the battery pack (8) is adapted to the upper end surface of the bottom limiting frame, the battery mounting bracket (9) is installed on the upper end surface and the outer side of the four side surfaces of the battery pack (8), the bottom limiting frame (7) is connected with the battery mounting bracket (9) through the stud bolt (10), the battery box is installed on the battery mounting bracket (9), the battery box is wrapped outside the battery pack (8), the upper end of the battery box is connected with the battery box cover (14), the upper end surface of the battery box cover (14) is provided with the driver seat (15) and the passenger seat (16).

2. The mounting device for low-speed four-wheeled vehicle lithium battery according to claim 1, characterized in that: The battery pack (8) comprises an upper box body (1) and a lower box body (2), and a brim (3) is arranged on the connecting surface of the upper box body (1) and the lower box body (2).

3. The mounting device for low-speed four-wheeled vehicle lithium battery according to claim 2, characterized in that: The lower box body (2) is provided with a reinforcing rib (6) at the upper end, and the upper end surface of the reinforcing rib (6) is in contact with the lower end surface of the brim (3).

4. The mounting device for low-speed four-wheeled vehicle lithium battery according to claim 2, characterized in that: The lower box body (2) is provided with a handle (5) on both sides.

5. The mounting device for low-speed four-wheeled vehicle lithium battery according to claim 2, characterized in that: The bottom of the lower box body (2) is provided with a rectangular open groove (4).

6. The mounting device for low-speed four-wheeled vehicle lithium battery according to claim 1, characterized in that: The battery box cover (14) is adapted to the battery box.

7. The mounting device for low-speed four-wheeled vehicle lithium battery according to claim 1, characterized in that: The battery box comprises a battery box left body (12) and a battery box right body (13), the upper ends of the battery box left body (12) and the battery box right body (13) are connected with the battery mounting bracket (9) through bolts, and the lower ends of the battery box left body (12) and the battery box right body (13) are connected with the chassis of the four-wheeled vehicle through bolts.

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