Description:Preamble to the Description
The following specification particularly describes the invention and the manner in which it is to be performed:

DESCRIPTION OF THE INVENTION:
Technical field of the invention
[0001] The present invention relates to battery mounting provision provided on the down tube of the main frame.
Background of the invention
[0002] Battery failure is by far the most common issue when it comes to mobility scooter troubleshooting. Most scooter users do not really consider the battery, but if this component does not work properly, nothing else will.
[0003] Mounting batteries on the floorboard of an electric scooter is a common practice, as it provides a central and easily accessible location for the battery pack. However, it's important to ensure proper mounting and secure attachment to minimize any potential risks or issues.
[0004] The battery pack should be securely fastened to the scooter's floorboard to prevent movement or displacement during normal operation or when encountering vibrations or bumps. The battery pack should be adequately protected from external elements such as water, dust, or impact.
[0005] It's essential to ensure proper insulation and protection for the battery pack to prevent any electrical shorts or contact with metal parts of the scooter. Insulating materials, such as foam padding or rubber grommets, can help create a buffer between the battery and the scooter's frame.
[0006] Weight distribution of the scooter when mounting the battery on the floorboard is an important factor hence placing of battery may impart significant amount of weight on the front or rear of the scooter and may affect its balance and handling characteristics.
[0007] Mounting the battery directly on the main frame of an electric scooter is another common approach. This type of mounting can offer stability, security, and efficient use of space. The battery should be securely fastened to the main frame of the scooter using appropriate mounting brackets or clamps. The attachment mechanism should be strong enough to withstand vibrations and impacts that may occur during normal use.
[0008] Lithium-ion batteries, commonly used in electric scooters, generate heat during operation. Mounting the battery directly on the main frame can help dissipate heat more effectively as the frame acts as a heat sink. However, it has to be noted that the frame does not become excessively hot and that there is proper ventilation around the battery to prevent overheating.
[0009] Vibration can potentially have an impact on electric scooter batteries, although the severity of the impact depends on various factors such as the quality of the battery, its design, and the extent of the vibrations.
[0010] Vibrations can potentially cause mechanical stress on the battery pack, which may result in loosening of connections, damaged cells, or compromised insulation. This can lead to reduced battery performance, capacity, or even failure.
[0011] Proper mounting and cushioning of the battery pack within the scooter can help mitigate the effects of vibrations. Securely fastening the battery and using shock-absorbing materials or padding can help reduce the impact of vibrations.
[0012] Periodically inspecting the battery pack for any signs of damage, loose connections, or abnormalities is important, the riding conditions and terrain can significantly impact the vibrations experienced by the electric scooter. Rough roads, uneven surfaces, or excessive jolts can subject the battery to more intense vibrations, potentially affecting its longevity.
[0013] Reference can be made to JP5879173B2 which disclose about a luggage box (23) disposed below a seat (3) on which an occupant sits and a battery box containing a battery therein and disposed below the luggage box (23). (14) and a frame member (9) extending to the upper rear side of the vehicle body from the rear end portions on both sides in the vehicle width direction of the step floor (4) on which the occupant places the foot, and the frame member (9) A vehicle body frame (F) in which a support bracket (26) protrudes at a position corresponding to a lower side of both sides of the luggage box (23), and between the luggage box (23) and the battery box (14) While being arranged, the load of the luggage box (23) is supported, and a fixing flange (25c) is provided at a position corresponding to the support bracket (26). A latch mounting stay (25), and locking flanges (28) interposed between the support bracket (26) and the fixing flange (25c) on both sides of the battery box (14) 27a, 28a) are provided in a protruding manner, and the support bracket (26) and the fixing flange (25c) are inserted via the collar (34) in a state in which the locking flange (27a, 28a) is sandwiched therebetween. They are characterized in that they are mutually fixed,
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[0014] Reference can be made to US7198129B2 which discloses about a vehicle body frame F includes the head pipe 27, a left-right pair of upper down frames 37 joined to the head pipe 27 and extended rearwardly downwards, a left-right pair of lower down frames 38, 38 which have horizontal portions 38b integrally joined to the rear ends of inclined portions 38a joined to the head pipe 27 on the lower side relative to the upper down frames 37 and extended rearwardly downwards and which have their rear ends welded to rear end portions of the upper down frames 37, a left-right pair of seat rails 39, 39 extended rearwardly upwards from intermediate portions of both the upper down frames 37, a left-right pair of rear frames 40 for connection between rear portions of the upper down frames 37 and rear portions of the seat rails 39, and a left-right pair of support frames 41, 41 disposed on the outer sides of the upper down frames 37, the lower down frames 25 and the rear frames 40 and extended in the front-rear direction.

[0015] Reference can be made to JP5879173B2 which discloses about a plurality of battery cells having electrodes at their ends are bundled and mounted on a vehicle. In the battery pack for an electric vehicle, the battery supporting frame that connects and supports the ends of the plurality of battery cells exposes and bundles the parts other than the ends of the battery cells. unit. Since the portions other than the end portions of the battery cells are exposed and bundled, cooling air can be sufficiently guided to the entire circumference of the battery cells, and sufficient cooling performance and heat radiation performance can be obtained.

Brief Description of drawings
[0016] Fig.1 is a view of complete frame of the electric vehicle
[0017] Fig. 2 is a view of battery mounting on the down frame

PROBLEM TO BE SOLVED
[0018] In the above mentioned prior arts, battery pack is not directly attached to the battery frame which involves increased number of linkages and the number of parts which increases the overall cost and also the weight of the vehicle which eventually affects its mileage as well.

OBJECT OF INVENTION
[0019] Main object of the invention is to reduce vibration transfer for the battery pack from the frame.
[0020] Another object of the present invention is to provide enhanced load transfer from the battery pack to the frame.
[0021] Another object of the present invention is to save the cells of the battery pack from getting damaged.
[0022] Yet another object of the present invention is to prevent rattling of the battery pack during the ride condition.

GENERAL STATEMENT OF INVENTION
[0023] A scooter type electrically powered vehicle of the present invention includes a down frame portion extending downward and rearward along a vehicle longitudinal direction from a head pipe and a down frame portion extending from the lower end of the down frame portion toward the rear in the vehicle longitudinal direction, wherein the down frame consists of an integrated mounting provisions for the battery pack.

SUMMARY OF THE INVENTION

[0024] A down frame portion extending downward and rearward along a vehicle longitudinal direction from a head pipe and a down frame portion extending from the lower end of the down frame portion toward the rear in the vehicle longitudinal direction having integrated raised projections for receiving the battery pack.

DETAILED DESCRIPTION OF THE INVENTION

[0025] Figure 1 illustrates a frame (100) of a scooter type electrically powered vehicle which includes a down frame portion extending downward and rearward along a vehicle longitudinal direction from a head pipe (101) and a down frame portion extending from the lower end of the down frame portion toward the rear in the vehicle longitudinal direction.
[0026] The step floor includes a step floor positioned between the pair of left (103) and right down frame (104). The step floor is supported by the left (103) and right (104) down frames of the main frame (102) pipe.
[0027] The battery pack (106) is supported on the support plate (107) having an “u” shape in side view so as to extend along the front surface and the rear surface, And is fixed and held on the vehicle body frame (100). The battery pack (106) is located just above of this support plate (107). In addition, the battery pack (106) is held such that its front and back and left and right are surrounded by the laterally extending down frame (103) and (104). Further, on the left and right outer sides of the battery pack, the rear portions of the left (103) and right (104) down frames inclined rearwardly and upward as seen from the side are disposed.
[0028] The battery holding down frame of the main frame (102) is mainly composed of, for example, a round or square steel pipe, and the lower front side and the rear upper side thereof are fastened and fixed to the floor support plate (107) along with plurality of cross plates (108) and a secondary cross bar (110) which is attached to the pair of left (103) and right (104) down frame pipes, in a manner that its lower most end is lower than that of battery pack (
106) enhancing the overall structural strength of the down frame (102) . The battery holding frame is integrated with plurality of raised projections (105) which receive the battery pack (106) and include battery pack fastening means. A plurality of “L” shape of bracket (109) are attached on the outer shell of the battery pack (106) and which are used for mounting of battery pack on to the down frame.
[0029] Battery pack (106) is fastened and fixed to the left and right direction of the floor, a pair of left (103) and right (104) down frame pipes extending rearward from the left and right end portions of the down frame; a support plate (107) which connects the down frame pipes to the front portion in the vehicle direction. The support plate (107) has a flat plate shape along the lower surface of the battery pack (106), and its front and rear edges are bent so as to extend along the front and rear corner portions of the upper surface of the battery pack (106). A pair of left (103) and right (104) down frame have integrated raised projections (105) for supporting fastening of the battery pack fixed on the upper side of lower frame pipes.
, C , Claims:WE CLAIM
1. An electric two-wheeled vehicle comprising: a vehicle body frame having a main frame (102), an electric motor disposed on the rear frame; supported by the rear end portion of the rear frame, and driving the rear wheel by the electric motor; a battery pack (106) for supplying power to the motor; and the main frame (102) includes: a pair of left (103) and right (104) down frame portions extending in a vehicle length direction, a pair of first and second cross plates (108) connected to a position lower than battery pack (106), a support plate (107) extending rearward of the head pipe (101) of the main frame and a secondary cross bar (110).
2. An electric two-wheeled vehicle as claimed in claim 1, wherein the said battery pack (106) is mounted on the left (103) and right (104) down frame portions of the main frame (102).
3. An electric two-wheeled vehicle as claimed in claim 1, wherein the said left (103) and right (104) down frame portions of the main frame (102) are having plurality of the raised projections (105).
4. An electric two-wheeled vehicle as claimed in claim 3, wherein the said raised projection (105) are the integral part of the said left (103) and right (104) down frame portions of the main frame (102) on which the battery pack (106) is mounted.
5. An electric two-wheeled vehicle as claimed in claim 1, wherein the said battery pack have (106) an integrated “L” (109) shape plurality of brackets attached on to its outer shell.
6. An electric two-wheeled vehicle as claimed in claim 1, wherein the said battery pack (106) is fixed on the left (103) and right (104) down frame portions of the main frame (102) by fastening of “L” (109) shape plurality of brackets attached on to its outer shell.
7. An electric two-wheeled vehicle as claimed in claim 1, wherein the said pair of first and second cross plates (108) are located above the said support plate (107) and provided increased strength to lower frame.
8. An electric two-wheeled vehicle as claimed in claim 1, wherein the said support plate (107) has a flat shape along the lower surface of the battery unit (106), and its front and rear edges are bent so as to extend along the front and rear portions of the of the battery unit.
9. An electric two-wheeled vehicle as claimed in claim 1, wherein the said secondary cross bar (110) is located below the heap pipe (101) part of the main frame (102) which supports and strengthens the left (103) and right (104) down frame portions of the main frame (102).
10. An electric two-wheeled vehicle as claimed in claim 1, wherein the said battery pack (106) is mounted directly on the vehicle frame in a manner which results in dampening of vibrations which are received as a response of vehicle going through undulation from the road.

Dated- 6th Day of July 2023 Signature of the Agent
Rajat Chaudhary IN/PA-3136