Installation Structure of All-Terrain Vehicle Power Battery

Abstract

The present invention discloses a power battery installation structure for an all-terrain vehicle, which includes a chassis and a frame installed above the chassis. A seat is provided in the middle area of the chassis. The area of the frame behind the seat has a hollow area. A support frame is installed between the bottom of the seat and the chassis. A battery pack is installed on the chassis. The front part of the battery pack is arranged in the support frame, and the rear part is arranged in the hollow area. The beneficial effect of the present invention is that the battery pack is ingeniously arranged under the seat and at the position where the engine is installed at the rear of the prototype vehicle, ensuring that the center of gravity of the electric all-terrain vehicle is close to the original position.

Description

Technical Field

[0001] The present invention relates to an all-terrain vehicle, and more particularly to a mounting structure for a power battery of an all-terrain vehicle. Background Art

[0002] An all-terrain vehicle refers to a vehicle that can travel on any terrain and move freely on terrains where ordinary vehicles are difficult to maneuver. This type of vehicle has various uses and is not restricted by road conditions, and its application scope and geographical area are becoming wider and wider, showing an increasing trend year by year.

[0003] With the rapid development of new energy electric vehicles, vehicle electrification is gradually extending to various sub-fields. At present, most all-terrain vehicles are fuel vehicles, and electric all-terrain vehicles are almost blank. In order to meet market demand and the development concept of green travel, the applicant is actively researching and developing electric all-terrain vehicles. One of the technical routes is to transform the original fuel all-terrain vehicle. The electrification transformation requires canceling the engine and transmission on the one hand, and re-arranging the power battery pack on the other hand. These major components not only account for a relatively large proportion of the weight, but also the basic framework of the prototype vehicle does not consider the installation of the battery pack. Therefore, in what way to implant the battery pack and ensure that the center of gravity of the all-terrain vehicle remains basically unchanged after re-layout is an urgent technical problem to be solved currently. Summary of the Invention

[0004] In view of this, the present invention provides a mounting structure for a power battery of an all-terrain vehicle, which cleverly arranges the battery pack under the seat and at the position where the engine was installed at the rear of the prototype vehicle, ensuring that the center of gravity of the electric all-terrain vehicle is close to the original position.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A mounting structure for a power battery of an all-terrain vehicle, comprising a chassis and a frame mounted above the chassis. A seat is provided in the middle region of the chassis, and the region of the frame behind the seat has a hollow region. The key lies in that a support frame is installed between the bottom of the seat and the chassis, a battery pack is installed on the chassis, the front part of the battery pack is arranged in the support frame, and the rear part is arranged in the hollow region.

[0007] Preferably, the battery pack has a stepped shape, and the thickness of its rear part is greater than that of its front part.

[0008] Preferably, the support frame is sequentially provided with a right hollow region, a middle hollow region, and a left hollow region along the width direction of the chassis. Battery packs are provided in both the right hollow region and the left hollow region, and seats are installed above the corresponding two groups of battery packs on the support frame.

[0009] Preferably, a drive shaft of the all-terrain vehicle is provided in the middle hollow area, and the gap between the battery pack and the drive shaft is greater than or equal to 38 mm.

[0010] Preferably, lugs are circumferentially distributed on the battery pack, and support seats are provided on the chassis corresponding to the lugs, and the lugs are fixedly installed on the support seats.

[0011] Preferably, the outer side of the rear part of the battery pack tapers inwards.

[0012] Preferably, a layout bridge is installed at the rear part of the vehicle frame, and the layout bridge is horizontally arranged above the hollow area. A plurality of supports are installed on the layout bridge, and the supports are used for fixedly assembling electrical components.

[0013] Preferably, both ends of the layout bridge are detachably installed on the vehicle frame through connecting components.

[0014] Preferably, a rear cross beam tube is detachably installed at the rear part of the vehicle frame.

[0015] Preferably, the seat is detachably installed on the support frame.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The front half of the battery pack is installed under the seat, and the rear half is installed at the engine installation position at the rear of the prototype vehicle, so that the center of gravity of the modified electric all-terrain vehicle is almost close to that of the original fuel vehicle, and the overall layout is very reasonable, which can ensure the passing ability and vehicle balance after the all-terrain vehicle is electrified.

[0018] 2. The two groups of battery packs are symmetrically arranged on the left and right sides of the vehicle body, which not only ensures the vehicle balance, but also leaves sufficient space for the installation of the drive shaft.

[0019] 3. The layout bridge is horizontally installed at the rear end of the prototype vehicle frame through the connecting components at both ends thereof. A plurality of supports on the layout bridge can provide sufficient installation positions for electrical components of the electric all-terrain vehicle, so that a large number of electrical components can be integrated in this area, which can ensure the neat arrangement of electrical components, simplify the wiring harness structure and reduce the circuit failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 , Figure 2 and Figure 3 are respectively cross-sectional views of the electric all-terrain vehicle along three different cross-sections;

[0021] Figure 4 is an axonometric view of the electric all-terrain vehicle;

[0022] Figure 5 is a schematic structural view of the layout bridge 7;

[0023] Figure 6 Another structural schematic diagram of the arranged bridge frame 7. Specific implementation manner

[0024] The present invention will be further described below in conjunction with embodiments and drawings.

[0025] As Figure 1 and 3 shown, a power battery installation structure of an electric all-terrain vehicle includes a chassis 1. A vehicle frame 5 is installed above the chassis 1. A seat 2 is arranged in the middle area of the chassis 1. The area of the vehicle frame 5 behind the seat 2 has a hollow area 5a. A support frame 3 is installed between the bottom of the seat 2 and the chassis 1. A battery pack 4 is installed on the chassis 1. The front half of the battery pack 4 is located inside the support frame 3, and the rear half is located inside the hollow area 5a. For a traditional fuel vehicle, the engine and the transmission are arranged in the hollow area 5a. For the electric all-terrain vehicle modified based on the prototype vehicle, installing the front half of the battery pack 4 under the seat 2 and the rear half inside the hollow area 5a can ensure that the center of gravity of the modified electric all-terrain vehicle is almost close to that of the original fuel vehicle. Based on this, since the hollow area 5a has a relatively large accommodation space, the thickness of the rear end of the battery pack 4 can be adjusted adaptively according to the battery capacity requirement to meet a wider range of usage requirements. In this embodiment, the battery pack 4 has a stepped shape, and the thickness of its rear part is greater than that of its front part. Specifically, the thickness of the battery pack 4 located in the hollow area 5a is greater than the thickness located inside the support frame 3.

[0026] Again, as Figure 3 shown, the support frame 3 is successively provided with a right hollow area 31, a middle hollow area 32, and a left hollow area 33 along the width direction of the chassis 1. The number of battery packs 4 is two groups, which are respectively installed in the right hollow area 31 and the left hollow area 33. The number of seats 2 is also two groups, which are respectively installed above the corresponding two groups of battery packs 4 on the support frame 3. Combining with the attached Figure 2 it can be seen that the drive shaft 6 of the all-terrain vehicle is installed in the middle hollow area 32. The above structural layout is very reasonable, which not only ensures the balance of the whole vehicle, but also leaves sufficient space for the installation of the drive shaft 6. In order to ensure that the movement of the drive shaft 6 is not interfered, it should be required that the gap between the battery pack 4 and the drive shaft 6 is greater than or equal to 38 mm. This embodiment is preferably set to 38 mm.

[0027] Again, as Figure 2 shown, in order to avoid the wheels of the all-terrain vehicle, the outer side of the rear part of the battery pack 4 is narrowed inward. Specifically, the width of the rear part of the battery pack 4 gradually becomes narrower, making its outer side form an inclined shape.

[0028] Again, as Figure 3As shown, in order to facilitate the fixing of the battery pack on the chassis, lugs 4a are circumferentially distributed on the battery pack 4, and support seats 1a are provided on the chassis 1 at positions corresponding to the lugs 4a. The lugs 4a are fixedly installed on the support seats 1a. To ensure the reliability of the fixing, the number of lugs 4a is six groups, symmetrically distributed along the circumference of the battery pack 4.

[0029] Again, Figure 1 and 5 As shown, a layout bridge 7 is installed at the rear of the vehicle frame 5. Both ends of the layout bridge 7 are horizontally installed above the hollow area 5a through connecting components 8. With such a design, on the one hand, the structural strength of the vehicle frame 5 can be improved. On the other hand, the layout bridge 7 can be used as an integrated installation area for electrical components. To facilitate the installation of electrical components, a number of supports are arranged on the layout bridge 7. The specific number of supports is set according to the number of electrical components. In this embodiment, four groups of supports are arranged on the layout bridge 7, namely a charger support a, a DC support b, a motor controller support c, and a low-voltage battery support d. Combining with the attached Figure 4 It can be seen that the charger support a is used to assemble the charger, the DC support b is used to assemble the DC AC / DC converter, the motor controller support c is used to assemble the motor controller, and the low-voltage battery support d is used to assemble the low-voltage battery.

[0030] Please refer to the attached Figure 5 , the charger support a and the motor controller support c have the same structure. Here, the charger support a is taken as an example for description. The charger support a includes a second rectangular frame a1 arranged parallel above the surface of the layout bridge 7. Support pieces a2 extending downward are provided at both ends of the second rectangular frame a1. The lower ends of the support pieces a2 are fixedly welded to the upper surface of the layout bridge 7. Screw holes f are distributed on the second rectangular frame a1. The charger can be fastened to the upper end of the second rectangular frame a1 by screws. Based on the above structure, there is a certain hollow space between the second rectangular frame a1 and the surface of the layout bridge 7, and the second rectangular frame a1 is a hollow structure, which can ensure that the charger has a good heat dissipation environment.

[0031] In this embodiment, the low-voltage battery support d includes a rectangular enclosure d1 fixedly welded to the upper surface of the layout bridge 7. A hoop d2 is detachably arranged on the upper part of the rectangular enclosure d1. The hoop d2 spans the width direction of the rectangular enclosure d1. The rectangular enclosure d1 and the upper surface of the layout bridge 7 enclose a box structure. During assembly, the lower end of the low-voltage battery is placed in the box structure, and the upper end can be locked and fixed by the hoop d2.

[0032] To further ensure the heat dissipation effect of the electrical components, heat dissipation holes e are provided at positions on the layout bridge 7 corresponding to the charger support a, the motor controller support c, and the low-voltage battery support d.

[0033] Please refer to the attached Figure 6, the DC support b is arranged in the middle of the front end of the distribution bridge 7, specifically including a first rectangular frame b1 obliquely arranged at the edge position of the front end of the distribution bridge 7. Folding plates b2 are provided at both ends of the first rectangular frame b1, and the middle parts of the folding plates b2 are welded and fixed to the distribution bridge 7. Screw holes are distributed on the first rectangular frame b1, and the DC-DC converter can be fastened to the surface of the first rectangular frame b1 by screws.

[0034] For another example Figure 6 As shown, the connecting component 8 is fixedly connected to the lower side of the end of the distribution bridge 7. An assembly groove 8a penetrating through in the extension length direction is provided at the lower end of the connecting component 8. Combining Figure 4 it can be seen that the connecting component 8 is fixed to the all-terrain vehicle frame 5 through the assembly groove 8a.

[0035] A rear crossbeam tube 5b is provided at the rear of the frame 5. In this embodiment, the distribution bridge 7, the rear crossbeam tube 5b, and the seat 2 are all assembled to the corresponding components in a detachable manner. Designed in this way, the battery pack 4 can be assembled from top to bottom, that is, assembled in the order of battery pack 4 → seat 2 → distribution bridge 7 → rear crossbeam tube 5b, meeting the requirements of the disassembly and assembly process.

[0036] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.

Claims

1. An installation structure for a power battery of an all-terrain vehicle, comprising a chassis and a frame mounted above the chassis. A seat is provided in the middle area of the chassis, and there is a hollow area in the area of the frame behind the seat. It is characterized in that: A support frame is installed between the bottom of the seat and the chassis. A battery pack is installed on the chassis. The front part of the battery pack is arranged within the support frame, and the rear part is arranged within the hollowed-out area. A wiring bridge is installed at the rear of the vehicle frame. Both ends of the wiring bridge are horizontally installed above the hollowed-out area through connecting components. An on-board charger support, a DC support, a motor controller support, and a low-voltage battery support are installed on the wiring bridge. The on-board charger support is used for assembling an on-board charger, the DC support is used for assembling a DC AC / DC converter, the motor controller support is used for assembling a motor controller, and the low-voltage battery support is used for assembling a low-voltage battery. The on-board charger support includes a second rectangular frame arranged parallel above the surface of the wiring bridge. Support pieces extending downward are provided at both ends of the second rectangular frame. The lower ends of the support pieces are fixedly welded to the upper surface of the wiring bridge. Screw holes are distributed on the second rectangular frame, and the on-board charger can be fastened to the upper end of the second rectangular frame by screws. The motor controller support has the same structure as the on-board charger support. A rear crossbeam tube is provided at the rear of the vehicle frame. The wiring bridge, the rear crossbeam tube, and the seat are all assembled to the corresponding components in a detachable manner.

2. The power battery mounting structure of the all-terrain vehicle according to claim 1, characterized in that: The battery pack has a stepped shape, and the thickness of its rear part is greater than that of its front part.

3. The all-terrain vehicle power battery installation structure according to claim 1, wherein: The support frame is sequentially provided with a right hollowed-out area, a middle hollowed-out area, and a left hollowed-out area along the width direction of the chassis. Battery packs are provided in both the right hollowed-out area and the left hollowed-out area. Seats are installed above the corresponding two groups of battery packs on the support frame.

4. The installation structure of the all-terrain vehicle power battery according to claim 2, characterized in that: A drive shaft of the all-terrain vehicle is provided in the middle hollowed-out area. The gap between the battery pack and the drive shaft is greater than or equal to 38 mm.

5. The installation structure of the all-terrain vehicle power battery according to claim 1, characterized in that: Ears are circumferentially distributed on the battery pack, and support seats are provided on the chassis at positions corresponding to the ears. The ears are fixedly installed on the support seats.

6. The power battery mounting structure of the all-terrain vehicle according to claim 1, wherein: The outer side of the rear part of the battery pack narrows inward.

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