DESC:F O R M 2
THE PATENTS ACT, 1970
(39 of 1970)
The patent Rule, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)

TITLE OF THE INVENTION
BATTERY SWAPPING MECHANISM FOR SADDLED TYPE ELECTRIC VEHICLE

Name and Address of the Applicant
NAME: Quantum Energy Limited
NATIONALITY: Indian
ADDRESS: S1(B) , Stage 1 Peenya , Near Peenya Police Station, Tumkur road, Bengaluru, Karnataka 560058

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 vehicle range issue by providing easy & fast mechanism for swapping battery in Electric Scooter
Background of the invention
[0002] Demand of Electric vehicles has increased over years as they are more efficient and eco-friendlier. In addition, growth in consumer demand to maximize vehicle efficiency and minimize fuel costs has led to consistent technological advancements in electric vehicles; however, driving range of electric vehicles per single charge is limited and may need to charge twice a day based on usages, which requires up to 6 to 10 hours to full charge a battery.
[0003] Thus, battery swapping leads to near zero down time for electric vehicles as compared to 6-10 hours daily down time with traditional charging. Furthermore, lack of adequate public charging facilities for electric vehicle charging and lack of standardization of charging infrastructure also fuels demand for battery swapping stations.
[0004] Charging time is an important factor for functioning of electric vehicles, especially in long-hauling applications. Currently, most electric vehicles employ a slow charging system to recharge battery. This charging system usually takes up to eight hours to full charge a battery. In addition, generally electric two-wheelers, three-wheelers, and four-wheelers have on-board chargers that charge the vehicle at the rate of 2.5–3 kW per hour. These chargers charge a two-wheeler (for a battery with an energy density up to 3 kWh) in no less than an hour. In addition, these chargers charge a four-wheeler or larger vehicle with batteries of 12 kWh or more in no less than five to six hours. Hence, battery swapping technology plays a vital role by eliminating such issues. It significantly decreases waiting time by interchanging of batteries within three minutes. For this, user just needs to go to a swapping station and get the depleted battery replaced with fully charged one.
[0005] E-scooter operators using current swappable technology require around 1.5 battery packs per vehicle. That’s because, for every fleet of scooters in service, a given number of additional batteries must be simultaneously charging in order for the system to operate efficiently. Conservative estimates indicate that a fleet of 50,000 vehicles requires as many as 75,000 batteries to be manufactured.
[0006] However, as the main mode of energy supply for electric vehicles, charging mode also has two main problems that restrict the industrialization of electric vehicles. First, charging time is long and charging is inconvenient. AC charging pile is small in size and convenient to install, which is suitable for slow charging, but the charging time is long, 6~10 h. DC charging can greatly shorten the charging time, but the strong current has a great impact on the power grid and on battery life. Second, whether employing fast charging or slow charging, when 10 a large number of electric vehicles are charged in disorder, this will have an impact on the power grid. At the same time, when car owners choose a charging place and time, they are usually random. Although orderly charging under the time-of-use price can cut peaks and fill valleys, it is difficult to guide users to take the initiative in reality. Therefore, the battery swapping mode is an effective way 15 to quickly replenish energy.
[0007] Advantages of Battery Swapping Stations Battery swapping, as an alternative refueling option realized through battery swapping stations (BSS), is being considered. Electric vehicle users only own cars and rent batteries from service operators, thus greatly reducing the purchase cost of electric vehicles and solving the problem of long charging times.
[0008] It can be seen that it is a system in which users, battery swapping stations and power grids interact with each other. When the EV battery reaches the threshold of changing power, a BSS will be selected to change power and generate depleted batteries (DB) to be recharged, then put the battery to be charged into chargers. 10 EVs must wait if there are no fully charged batteries (FB) in the station. It can be seen that the battery swapping station is not a separate operation system. Due to the operation of battery charging or discharging, the battery, the distribution network and the battery swapping station are all under centralized management and constitute an integrated system.
[0009] Compared with the charging station, the battery swapping station (BSS) has these advantages: a) Reducing the initial purchase cost for consumers. Since batteries account for 40% of the total cost of vehicles, consumers do not need to pay high battery costs under the concept of vehicle battery separation. b) Quickly replenishing energy. It only takes approximately 3–5 min.
[0010] Drops, mishandling and exposure to the elements and poor storage conditions are not only possible hazards; they’re reasonably expected outcomes based on what we know of human error and the rugged realities of micromobility. Each accidental bump, jostle and collision compromises the integrity of the battery casing and increases the likelihood of premature failure.
[0011] Batteries are often a target of theft, our team has designed reinforced enclosures that require special tools to open. This makes unauthorised access extremely challenging for would-be vandals, and it helps keep our fully-waterproof batteries even more protected in the event a scooter becomes submerged.
[0012] Reference can be made to US9346421 which discloses about a saddle-type electric vehicle includes an electric motor configured to drive a drive wheel; a battery configured to be attached to, and detached from, a vehicle, and to supply electrical power to the electric motor; a connector on the battery; an elastic member provided on the vehicle and configured to support the battery; and a connector on the vehicle configured to be electrically connected to the connector on the battery. The connector on the vehicle is configured to be switched between an unlock state in which movement of the connector on the vehicle follows oscillations of the battery, and a lock state in which the movement of the connector on the vehicle is restricted or prevented.
[0013] Reference can be made to TWI683764B which discloses about a battery 100 can generate a predetermined high voltage (for example: 48V to 72V) by connecting a plurality of unit cells 101, 102 in series. For example, each unit battery 101, 102 can be configured as a power storage device that can be charged and discharged by a lithium ion battery. Each unit battery 101, 102 is inserted into and detached from above with respect to each battery case 103, 104 fixed in the vehicle body (battery case support structure 110), a battery box support structure 110 for supporting the battery boxes 103 and 104 is attached to the vehicle body frame 11.
[0014] Reference can be made to TWI333906B which discloses about a battery housing device includes a receiving unit disposed on the frame, and a power supply unit detachably disposed in the receiving unit, the accommodating unit has a receiving seat disposed on the frame of the electric vehicle, and a locating base disposed on the frame and located opposite the receiving base. The accommodating seat has an inner surrounding wall surrounding the accommodating space, and two first guiding members and a corresponding space disposed on the inner surrounding wall. This spaced apart by the accommodating groove, and the base is located below the hollow space. The seat cushion is pivotally disposed above the valley seat for receiving the receiving space and the receiving slot of the receiving seat. The power supply unit has a hollow battery case detachably disposed in the accommodating space of the accommodating seat, and two corresponding first guide members disposed on the battery case matched second guiding member, three batteries accommodated in the battery case.
Brief Description of drawings
[0015] Fig.1 depicts a side view of the vehicle
[0016] Fig.2 depicts mechanical linkages for the battery carriage
[0017] Fig.3 depicts an active state while battery is being swapped
[0018] Fig.4 depicts a front view of the battery and battery carriage
PROBLEM TO BE SOLVED
[0019] ] By This Battery Swapping technology we are making the easy of changing the heavy weight battery around 13kg which give a rage of around 85Kmph. So by using this mechanism people can swap the battery much easily and also much fast.
OBJECT OF INVENTION
[0020] Main object of the invention is to provide release mechanism for a detachable type battery pack.
[0021] Another object of the invention is to provide a latching mechanism for a detachable type battery pack.
[0022] Yet another object of the invention is to provide mechanical mechanism for release and latching the battery pack.
[0023] Yet another object of the invention is to arrest the movement while the vehicle is in moving condition.
[0024] Yet another object of the invention is to provide a pivot using which the battery pack can be tilted.
[0025] Yet another object of the invention is to provide assistance during pulling of the battery pack.
[0026] Still another object of the invention is to provide a mechanical auto-lock mechanism which will only open the clamp for release of battery in tilt condition.

GENERAL STATEMENT OF INVENTION
[0027] The said invention is about providing a mechanism which enables easy removal of battery pack from the vehicle, battery pack are generally heavy and lifting up at an angle of 180 degree from ground makes it extremely difficult operation for a user.
[0028] In the said invention the battery is placed in a battery carriage which is tilted and at the same time provide assistance for the user for lifting the battery pack when compared to traditional swapping mechanism, further the carriage also provides a self-locking mechanism by which once the new completely charged battery is replaced then it is secured in the battery carriage arresting any moment during the ride of the vehicle.

SUMMARY OF THE INVENTION

[0029] Steps In the Battery Swapping technology in Electric Scooter
1: Switch Off the Ignition Switch: Once the SOC indicates the low charge the vehicle 10 will be navigated to the nearest swapping station where vehicle battery can be replaced by the charged battery.
2: Open the Seat latch: Since the battery is under the driver seat the seat has to be unlatched and then the Utility box lid has to be open to access the battery pack.
3: Open the rider’s seat.
4: Open the utility box lid
5: Un-lock the battery carriage by ignition key
6: Pull the battery out, while pulling battery will tilt and auto unlock from battery carriage and will be taken out for changing/swapping.

DETAILED DESCRIPTION OF THE INVENTION

[0030] Fig. 1 is a side view of an electric scooter according to an embodiment of the present invention having a head pipe which is rotatable and supports a stem shafts connected to the front of a body frame. A handlebar which is covered by a handlebar cover is joined to the top of the stem shaft and a pair of left and right front suspension supporting a front wheel.
[0031] The body frame includes: a main pipe extending downward from the back of the head pipe; a pair of left and right under frames constituting the step-trough floor; and rear frames joined to the under frames, extending upward in the vehicle rearward direction.
[0032] The swing arm is provided either side in the vehicle width direction and is swingably supported to the body frame. The swing arm, a partially hollow structure made of metal such as aluminum, supporting the rear wheel which houses the hub motor, rear wheel is rotatably supported to the swing arm by the axle.
[0033] A battery carriage for housing battery to supply power to the electric motor is disposed between the pair of left and right under frames and below a storage box with a prescribed space, which is sandwiched between the pair of left and right rear frames, a main stand for keeping the vehicle in an upright standing position is fitted to the bottom face of the swing arm.
[0034] An openable and closable lid for covering a detachable battery pack located below the rider seat, the lid in closed condition is an integrated part of bottom of the storage box.
[0035] Fig 2 is side view of battery carriage (200) for battery swapping functionality; battery carriage (200) is provided with two fixed support brackets (201) and (208) which are fixed on to the frame of the vehicle, (202) is a bracket which is fixed on the battery carriage (200), hinge (210) is attached to bracket (202) which allows the battery carriage (200) to rotate on “y” axis.
[0036] First mechanical link member (203) is a coupler link which connects the second mechanical link member (204) is a crank link and the slider block (205), First mechanical member (203) can be rotated on “Y” axis and simultaneously can be tilted on its “Z” axis, slider block (205) is a floating member and can be moved along “Z” axis.
[0037] Third mechanical link member (206) is another coupler link which can be slide on “Y” axis as well as rotate on its “Y” axis.
[0038] A clamping mean (207) which is a fourth mechanical link keeps the battery pack (216) in its position during the lock condition and also restricts jolting and any kind of motion which may lead to disconnection of power to the hub motor, (207) is rotatable on its axis.
[0039] Fifth mechanical link (209) is an arrestor link which restricts the angle of tilt of the battery carriage (200).
[0040] Fig 3 is the side view of battery carriage (200) during the swapping of battery pack (216), during swapping operation, the applied torque to lift the battery pack (216) from the battery carriage (200) will rotate the battery carriage (200) by a biased means (210) at its hinge position which will engage second mechanical link member (204) will also rotates in the direction of the tilt due to the system being a closed system.
[0041] The second mechanical link member (204) during swapping condition will tilt and during this tilt it will pull the Coupler link (203) in downward direction along Z axis and this downward motion of coupler link (203) will be arrested by an arrestor pin (215) fixed on the battery carriage (200), The coupler link (203) is also in connection with slider block (205), as the battery carriage (200) starts tilting more than 15 deg., the distance of the second mechanical link member (204) shortens and it pulls Coupler link (203) in downward direction, this causes the slider block (205) to slide downward.
[0042] The slider block (205) is connected to third mechanical link member (206), this third mechanical link member is free to rotate/ pivot along the Y – axis by means of biasing means (213), as the degree of rotation further increases the third mechanical link member (206) moves along the Y axis and maximum increment is 5 mm from initial position.
[0043] Fig 4 is the front view of the battery carriage (200) showing the displacement of third mechanical link member (206) by 5 mm, also the clamping means (207) is connected to third mechanical link member (206) by means of biasing means (213).
[0044] When battery carriage (200) reaches its inclination 20 deg, the clamping means (207) starts rotating along the X axis till it is in full open condition at 23 deg., fifth mechanical link (209) is an arrestor link which will serve in the closing of the clamping means (207) as well over tilting when the battery (216) is placed back in battery carriage (200) and the battery carriage (20) is rested.

List of References-

100-Vehicle
200-Battery Carriage
201-Fixed support bracket welded on frame
202-Fixed support bracket welded on battery carriage
203- First mechanical link member
204- Second mechanical link member
205- Sliding block
206-Third mechanical link member
207-Fourth Mechanical link member
208-Fixed support bracket welded on frame
209-Fifth Mechanical link member
210-Hinge
211-Arrestor pin
212-Arrestor pin
213-Biasing means
214-Arrestor pin
215-Arrestor pin
216-Battery Pack

,CLAIMS:We Claim:
1. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) for housing battery to supply power to the electric motor disposed between a pair of left and right under frames and below a storage box sandwiched between the pair of left and right rear frames, wherein the said battery carriage (200) is provided with battery swapping functionality which allows battery pack (216) to be lifted from the battery carriage (200) using biased means and plurality of mechanical linkages.
2. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 1, wherein the said battery carriage is fixed on the vehicle 100 by means of support brackets (201) and (208).
3. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 2, wherein the said battery carriage (200) is having a bracket (202) fixed on it which allows the battery carriage (200) to rotate on “Y” axis by means of a hinge (210) attached to the bracket (202).
4. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 1, wherein first of the said plurality of mechanical linkages is coupler link (203) which connects the second of the said plurality of mechanical link member (204) which is a crank link to a slider block (205).
5. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 4, wherein the said coupler link (203) can be rotated on “Y” axis and can be tilted on its “Z” axis, further the said slider block (205) is a floating member and can be moved along “Z” axis.
6. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 1, wherein third of the said plurality of mechanical linkages is another coupler link (206) which can be slide on “Y” axis as well as rotate on its “Y” axis.
7. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 1, wherein fourth of the said plurality of mechanical linkages is a clamping means which keeps the said battery pack (216) in its position during the lock condition preventing jolting of the said battery pack (216).
8. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 1, wherein fifth of the said plurality of mechanical linkages is an arrestor link (209) which restricts the angle of tilt of the battery carriage (200).
9. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 1, wherein the said biasing means (213) is used to connect a clamping means (207) to the third of the said plurality of mechanical linkages.
10. A battery swapping mechanism for saddled type electric vehicle comprising a battery carriage (200) as claimed in claim 1, wherein during swapping of battery pack (216), the applied torque to lift the battery pack (216) from the battery carriage (200) will rotate the battery carriage (200) by a biased means (210) at its hinge position which will engage second mechanical link member (204) will also rotates in the direction of the tilt due to the system being a closed system.

Dated-18 April 2023 Signature of the Agent
Rajat Chaudhary IN/PA-3136