WO2008122985A1 - Electrical system for a step through two wheeled vehicle - Google Patents

Electrical system for a step through two wheeled vehicle Download PDF

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Publication number
WO2008122985A1
WO2008122985A1 PCT/IN2008/000207 IN2008000207W WO2008122985A1 WO 2008122985 A1 WO2008122985 A1 WO 2008122985A1 IN 2008000207 W IN2008000207 W IN 2008000207W WO 2008122985 A1 WO2008122985 A1 WO 2008122985A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheeled vehicle
electrical system
battery packs
bottom panel
scooter
Prior art date
Application number
PCT/IN2008/000207
Other languages
French (fr)
Inventor
Pramila Rao Nileshwar
Subramoniam Chithambaram
Jabez Dhinagar Samraj
Vinay Chandrakant Harne
Original Assignee
Tvs Motor Company Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tvs Motor Company Ltd filed Critical Tvs Motor Company Ltd
Priority to BRPI0808116 priority Critical patent/BRPI0808116A2/en
Publication of WO2008122985A1 publication Critical patent/WO2008122985A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
    • B62J17/10—Ventilation or air guiding devices forming part of fairings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J43/00—Arrangements of batteries
    • B62J43/10—Arrangements of batteries for propulsion
    • B62J43/16—Arrangements of batteries for propulsion on motorcycles or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/246—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2202/00—Motorised scooters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2204/00—Adaptations for driving cycles by electric motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the subject matter described herein in general, relates to a step-through two wheeled vehicle and in particular relates to an electrical system for a step through two wheeled vehicle.
  • Vehicles driven by electric motors were developed as one such solution proposed for the aforesaid problem.
  • Such vehicles are powered using an electric drive system having the electric motor as a powering source, a battery pack for the electric motor and a controller.
  • the controller manages the operations of the electric motor and the battery pack. Positioning of battery pack in the electric motor driven two- wheeled vehicle may be critical task due to limited availability of space.
  • the battery pack is disposed within a utility box area below the seat. Positioning of the battery pack inside the utility box leads to wastage of space that could have been used for storing other articles. This arrangement also prevents the dissipation of heat that is generated during charging and discharging of the battery pack resulting in decreased efficiency.
  • the subject matter described herein relates to an electrical system for a step through two wheeled vehicle that also provides the means for effective cooling of the battery pack.
  • a step through two wheeled vehicle includes a footboard and a frame.
  • the frame is extending longitudinally along the two wheeled vehicle.
  • the two wheeled vehicle is provided with an electrical system underneath the footboard of the two wheeled vehicle.
  • the electrical system comprises a plurality of battery packs.
  • a plurality of temperature sensors are provided in the electrical system for sensing the temperature of each of the battery packs.
  • a plurality of blowers is provided for cooling the battery packs.
  • the electrical system further includes a controller to operate the blowers based on their temperature.
  • a bottom panel covers the electrical system of the electric motor driven two wheeled vehicle.
  • the bottom panel has a plurality of louvers provided for directing air flow to the battery packs. .
  • Fig.l illustrates the perspective view of the scooter with respect to one embodiment of the present subject matter.
  • Fig.2 illustrates the position of battery packs below the footboard area of the scooter of Fig.l.
  • Fig.3 illustrates the side view of the electrical system of the scooter shown in Fig.l.
  • Fig.4 illustrates the arrangement of louvers on the bottom panel along the G-G axis, D-D axis and H-H axis of the scooter shown in Fig.l.
  • Fig.5 illustrates the arrangement of first louver on the bottom panel along the G-G axis of the scooter shown in Fig.l.
  • Fig.6 illustrates the arrangement of second louver on the bottom panel along the D-D axis of the scooter shown in Fig.l.
  • Fig.7 illustrates the arrangement of third louver on the bottom panel along the H-H axis of the scooter shown in Fig.l.
  • Fig.8 illustrates the electrical system of the scooter of the scooter shown in Fig.l.
  • Fig.9 illustrates the block diagram of the operation of the controller of the scooter shown in Fig.l.
  • the electrical system positioned underneath the footboard allows effective utilization of available space and for cooling the battery pack is described.
  • the electrical system is placed beneath the frame of the two wheeled vehicle.
  • the frame extends longitudinally along the two wheeled vehicle further includes a footboard attached to the frame.
  • the electrical system includes one or more battery packs, temperature sensors, blowers and a controller.
  • the temperature sensors measure the temperature of the battery packs.
  • Each of the temperature sensors can be mounted on each of the battery pack.
  • the blowers are provided in the front portion of the battery packs and are attached to the frame of the two wheeled vehicle.
  • the controller regulates the operation of the blowers based on the temperature of the battery packs measured by the temperature sensors.
  • the electrical system of the two wheeled vehicle is covered by a bottom panel of the two wheeled vehicle.
  • the bottom panel includes a plurality of louvers for allowing the entry of air.
  • the louvers are placed angularly on the bottom panel to allow the entry of air when the two wheeled vehicle is in motion and thus provides natural cooling to the battery pack.
  • a step through two-wheeled vehicle comprises a Irame that extends longitudinally along the two wheeled vehicle.
  • the vehicle further include a footboard extending downwardly and longitudinally of the frame, an electrical system that is provided underneath the footboard and a bottom panel for covering the electrical system.
  • the bottom panel has a plurality of louvers that are provided on the surface of the bottom panel in order to allow entry of air through louvers.
  • the electrical system includes a plurality of battery packs, a plurality of temperature sensors, a plurality of blowers and a controller.
  • Each temperature sensor senses the temperature of each one of corresponding battery packs.
  • Blowers are provided in the forward portion of battery packs and provide a movement of cooling air towards each of battery packs respectively.
  • the controller selectively operates blowers based on an output from the temperature sensors.
  • the footboard is attached to the frame.
  • the louvers are placed at an angle of 45 degree with respect to the bottom panel.
  • each blower is attached to the frame separately.
  • the temperature sensors and the blowers are connected to the controller through a plurality of connectors.
  • the output of temperature sensor is 40 degrees Celsius.
  • Fig.l illustrates a perspective view of a scooter with respect to one embodiment of the present subject matter.
  • the embodiments disclosed herein are described in the context of a scooter. However, the embodiments and the subject matter herein can also be applied to other vehicles, such as motorcycle type two or three-wheeled vehicles, all terrain vehicles, and other vehicles with more than two wheels.
  • the scooter 100 is configured for accommodating two persons, a rider and a pillion.
  • the scooter 100 includes a frame 105, a seat 110, a front wheel 115, a rear wheel 120, a footboard 125, an electric motor and a transmission means to turn the wheels of the scooter 100.
  • the scooter 100 further includes an electrical system 130 disposed underneath the footboard 125 of the scooter 100.
  • Fig.2 illustrates the position of battery packs below the footboard area.
  • the chassis tubes 205, 210 and 215 are disposed between the footboard 125 of the scooter 100 and a bottom panel 220.
  • the battery packs 225, 230, and 235 are placed between the chassis tubes 205, 210 and 215 below the footboard 125 area of the scooter 100.
  • Each of the battery packs 225, 230 and 235 has a mounted temperature sensor 240, 245 and 250 respectively for measuring their related temperature.
  • Fig.3 illustrates the side view of the electrical system.
  • a plurality of louvers 305 are provided on the surface of the bottom panel 220 of the scooter 100. The plurality of louvers 305 allow entry of air within the electrical system 130 to provide natural cooling of each of the battery pack 225, 230 and 235 when the scooter 100 is in running condition.
  • Fig.4 illustrates the arrangement of louvers on the bottom panel along the G-G axis, D-D axis and H-H axis.
  • three set of louvers (collectively referred to as louvers 305) are provided on the surface of bottom panel 220 of the scooter 100.
  • the louvers 305 are preferably placed at an angle of 45 degree with respect to the bottom panel 220 of the scooter 100.
  • the first set of louvers 305/1 is formed on the bottom panel 220 of the scooter 100 along the H-H axis.
  • the second set of louvers 305/2 is formed on the bottom panel 220 of the scooter 100 along the D-D axis.
  • the third set of louvers 305/3 is formed on the bottom panel 220 of the scooter 100 along the G-G axis.
  • the louvers 305 allow the entry of air to provide natural cooling of the battery packs 225, 230 and 235 when the scooter 100 is in motion. It would be appreciated by a skilled person that the angle of the louver 305 can be changed so as to adjust the rate of air flow to the battery pack 225, 230 and 235.
  • Fig.5 illustrates the arrangement of first louver on the bottom panel along the axis G-G.
  • the first set of louvers 305/1 covers the first battery pack 225 and is formed on the bottom panel 220 of the scooter 100 at an angle of preferably 45 degrees along the axis G-G.
  • the first set of louvers 305/1 allows the entry of air when the scooter 100 is in motion directing the air flow to the first battery pack 225.
  • the first louver 305/1 can be formed at an angle between 0 to 90 degrees on the surface of the bottom panel 220 of the scooter 100.
  • the second set and the third set of louvers 305/2 and 305/3 are arranged so as to direct the air flow to the second and the third battery packs 230 and 235.
  • the structure of the second and the third louver 305/2 and 305/3 is depicted in Fig. 6 and Fig. 7 respectively.
  • Fig.8 illustrates the electrical system of the scooter.
  • the second temperature sensor 245, and the third temperature sensor 250 are connected to a controller 805 by means of connectors 810.
  • Blowers 815, 820, and 825 are attached to the frame 105 of the scooter 100 and are connected to the controller 805 through connectors 810.
  • the blowers 815, 820, and 825 are provided in the forward portion of the battery packs 225, 230, and 235 respectively to provide a forced movement of cooling air.
  • the temperature sensors 240, 245, and 250 measures the temperature of the first battery packs 225, 230, and 235 respectively. Based on the temperature of the battery packs 225, 230, and 235 the controller 805 operates one or more of the blowers 815, 820 or 825.
  • Fig.9 illustrates the block diagram of the operation of the controller.
  • the block diagram illustrates the circuitry to operate the first blower 815, the second blower 820, and the third blower 825.
  • the circuitry includes a thermistor 905 comprising a first temperature sensor 240, the second temperature sensor 245, and the third temperature sensor 250 to measure the temperature of the first battery pack 225, the second battery pack 230, and the third battery pack 235.
  • the current output of the thermistor 905 is given to a signal conditioner 910.
  • the signal conditioner 910 filters the electrical noises from the output signal of the thermistor 905 and the filtered output is given to a comparator 915.
  • the comparator 915 compares the output of thermistor 905 with a threshold value.
  • the comparator 915 triggers the electrical switch 920 and thus operate the blower 925 comprising the first blower 815, the second blower 820 and the third blower 825.
  • the first blower 815, the second blower 820, and the third blower 825 will therefore provide the movement of cooling air to the first battery pack 225, the second battery pack 230, and the third battery pack 235 respectively.
  • the predetermined threshold value is 40 degree Celsius.
  • the subject matter described herein is not limited to motor driven scooter type vehicle. Rather, the subject matter described herein can be applied to any other vehicle using any other power source, and more particularly to small wheeled vehicles like motorcycles.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Secondary Cells (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The subject matter described herein relates to a step-through two wheeled vehicle. According to one embodiment of the present subject matter, a electrical system is disposed underneath the footboard of the two wheeled vehicle. The electrical system includes battery packs such that each of the battery pack has a temperature sensor mounted on it and has a blower provided in a forward portion of the battery pack. A controller operates the blowers when the temperature of the battery packs exceeds the threshold value. The electrical system is covered by a bottom panel having the louvers formed on its surface to provide natural cooling of the battery packs when the two wheeled vehicle is in running condition

Description

ELECTRICAL SYSTEM FOR A STEP THROUGH TWO WHEELED VEHICLE
TECHNICAL FIELD
The subject matter described herein, in general, relates to a step-through two wheeled vehicle and in particular relates to an electrical system for a step through two wheeled vehicle. BACKGROUND
In order to reduce the air pollution and preserve the depleting crude oil, great attention has been given to the problem of reduction of fuel consumption in vehicles and to reduce the pollutants emitted by vehicles. Vehicles driven by electric motors were developed as one such solution proposed for the aforesaid problem. Such vehicles are powered using an electric drive system having the electric motor as a powering source, a battery pack for the electric motor and a controller. The controller manages the operations of the electric motor and the battery pack. Positioning of battery pack in the electric motor driven two- wheeled vehicle may be critical task due to limited availability of space.
Conventionally in the two-wheeled electric vehicles, the battery pack is disposed within a utility box area below the seat. Positioning of the battery pack inside the utility box leads to wastage of space that could have been used for storing other articles. This arrangement also prevents the dissipation of heat that is generated during charging and discharging of the battery pack resulting in decreased efficiency. _
Therefore, there is a need to for a electrical system that is disposed in a manner which allows proper utilization of available space, and providing adequate cooling arrangement for the battery pack within the two- wheeled vehicle.
SUMMARY The subject matter described herein relates to an electrical system for a step through two wheeled vehicle that also provides the means for effective cooling of the battery pack.
According to one aspect of the present subject matter, a step through two wheeled vehicle includes a footboard and a frame. The frame is extending longitudinally along the two wheeled vehicle. The two wheeled vehicle is provided with an electrical system underneath the footboard of the two wheeled vehicle. The electrical system comprises a plurality of battery packs. A plurality of temperature sensors are provided in the electrical system for sensing the temperature of each of the battery packs. A plurality of blowers is provided for cooling the battery packs. The electrical system further includes a controller to operate the blowers based on their temperature.
A bottom panel covers the electrical system of the electric motor driven two wheeled vehicle. The bottom panel has a plurality of louvers provided for directing air flow to the battery packs. .
These and other features, aspects, and advantages of the present subject matter will become better understood with reference to the following description and appended claims. This summary is provided to introduce a selection of concepts in a simplified form. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
BRIEF DESCRIPTION OF DRAWINGS:
The above and other features, aspects, and advantages of the subject matter will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Fig.l illustrates the perspective view of the scooter with respect to one embodiment of the present subject matter.
Fig.2 illustrates the position of battery packs below the footboard area of the scooter of Fig.l.
Fig.3 illustrates the side view of the electrical system of the scooter shown in Fig.l.
Fig.4 illustrates the arrangement of louvers on the bottom panel along the G-G axis, D-D axis and H-H axis of the scooter shown in Fig.l.
Fig.5 illustrates the arrangement of first louver on the bottom panel along the G-G axis of the scooter shown in Fig.l.
Fig.6 illustrates the arrangement of second louver on the bottom panel along the D-D axis of the scooter shown in Fig.l.
Fig.7 illustrates the arrangement of third louver on the bottom panel along the H-H axis of the scooter shown in Fig.l. Fig.8 illustrates the electrical system of the scooter of the scooter shown in Fig.l.
Fig.9 illustrates the block diagram of the operation of the controller of the scooter shown in Fig.l.
DESCRIPTION
An electrical system positioned underneath the footboard allows effective utilization of available space and for cooling the battery pack is described. The electrical system is placed beneath the frame of the two wheeled vehicle. The frame extends longitudinally along the two wheeled vehicle further includes a footboard attached to the frame.
The electrical system includes one or more battery packs, temperature sensors, blowers and a controller. The temperature sensors measure the temperature of the battery packs. Each of the temperature sensors can be mounted on each of the battery pack. The blowers are provided in the front portion of the battery packs and are attached to the frame of the two wheeled vehicle. The controller regulates the operation of the blowers based on the temperature of the battery packs measured by the temperature sensors.
The electrical system of the two wheeled vehicle is covered by a bottom panel of the two wheeled vehicle. The bottom panel includes a plurality of louvers for allowing the entry of air. The louvers are placed angularly on the bottom panel to allow the entry of air when the two wheeled vehicle is in motion and thus provides natural cooling to the battery pack. A step through two-wheeled vehicle comprises a Irame that extends longitudinally along the two wheeled vehicle. The vehicle further include a footboard extending downwardly and longitudinally of the frame, an electrical system that is provided underneath the footboard and a bottom panel for covering the electrical system. The bottom panel has a plurality of louvers that are provided on the surface of the bottom panel in order to allow entry of air through louvers. The electrical system includes a plurality of battery packs, a plurality of temperature sensors, a plurality of blowers and a controller. Each temperature sensor senses the temperature of each one of corresponding battery packs. Blowers are provided in the forward portion of battery packs and provide a movement of cooling air towards each of battery packs respectively. The controller selectively operates blowers based on an output from the temperature sensors.
In accordance with one aspect of the present subject matter, the footboard is attached to the frame.
In accordance with another aspect of the present subject matter, the louvers are placed at an angle of 45 degree with respect to the bottom panel.
In accordance with another aspect of the present subject matter, each blower is attached to the frame separately.
In accordance with another aspect of the present subject matter, the temperature sensors and the blowers are connected to the controller through a plurality of connectors.
In accordance with another aspect of the present subject matter, the output of temperature sensor is 40 degrees Celsius. Fig.l illustrates a perspective view of a scooter with respect to one embodiment of the present subject matter. The embodiments disclosed herein are described in the context of a scooter. However, the embodiments and the subject matter herein can also be applied to other vehicles, such as motorcycle type two or three-wheeled vehicles, all terrain vehicles, and other vehicles with more than two wheels.
As used herein, the terms "front", "rear", "left", "right", "up", and "down", correspond to the direction assumed by a driver of the vehicle. The scooter 100 is configured for accommodating two persons, a rider and a pillion. The scooter 100 includes a frame 105, a seat 110, a front wheel 115, a rear wheel 120, a footboard 125, an electric motor and a transmission means to turn the wheels of the scooter 100. The scooter 100 further includes an electrical system 130 disposed underneath the footboard 125 of the scooter 100.
The terms 'scooter' and 'two wheeled vehicle' are hereinafter interchangeably used.
Fig.2 illustrates the position of battery packs below the footboard area. As shown, the chassis tubes 205, 210 and 215 are disposed between the footboard 125 of the scooter 100 and a bottom panel 220. The battery packs 225, 230, and 235 are placed between the chassis tubes 205, 210 and 215 below the footboard 125 area of the scooter 100. Each of the battery packs 225, 230 and 235 has a mounted temperature sensor 240, 245 and 250 respectively for measuring their related temperature. Fig.3 illustrates the side view of the electrical system. A plurality of louvers 305 are provided on the surface of the bottom panel 220 of the scooter 100. The plurality of louvers 305 allow entry of air within the electrical system 130 to provide natural cooling of each of the battery pack 225, 230 and 235 when the scooter 100 is in running condition.
Fig.4 illustrates the arrangement of louvers on the bottom panel along the G-G axis, D-D axis and H-H axis. As shown in figure 4, three set of louvers (collectively referred to as louvers 305) are provided on the surface of bottom panel 220 of the scooter 100. The louvers 305 are preferably placed at an angle of 45 degree with respect to the bottom panel 220 of the scooter 100. The first set of louvers 305/1 is formed on the bottom panel 220 of the scooter 100 along the H-H axis. The second set of louvers 305/2 is formed on the bottom panel 220 of the scooter 100 along the D-D axis. The third set of louvers 305/3 is formed on the bottom panel 220 of the scooter 100 along the G-G axis. The louvers 305 allow the entry of air to provide natural cooling of the battery packs 225, 230 and 235 when the scooter 100 is in motion. It would be appreciated by a skilled person that the angle of the louver 305 can be changed so as to adjust the rate of air flow to the battery pack 225, 230 and 235.
Fig.5 illustrates the arrangement of first louver on the bottom panel along the axis G-G. The first set of louvers 305/1 covers the first battery pack 225 and is formed on the bottom panel 220 of the scooter 100 at an angle of preferably 45 degrees along the axis G-G. The first set of louvers 305/1 allows the entry of air when the scooter 100 is in motion directing the air flow to the first battery pack 225. The first louver 305/1 can be formed at an angle between 0 to 90 degrees on the surface of the bottom panel 220 of the scooter 100. Similarly the second set and the third set of louvers 305/2 and 305/3 are arranged so as to direct the air flow to the second and the third battery packs 230 and 235. The structure of the second and the third louver 305/2 and 305/3 is depicted in Fig. 6 and Fig. 7 respectively.
Fig.8 illustrates the electrical system of the scooter. The first temperature sensor
240, the second temperature sensor 245, and the third temperature sensor 250 are connected to a controller 805 by means of connectors 810.
Blowers 815, 820, and 825 are attached to the frame 105 of the scooter 100 and are connected to the controller 805 through connectors 810. The blowers 815, 820, and 825 are provided in the forward portion of the battery packs 225, 230, and 235 respectively to provide a forced movement of cooling air.
The temperature sensors 240, 245, and 250 measures the temperature of the first battery packs 225, 230, and 235 respectively. Based on the temperature of the battery packs 225, 230, and 235 the controller 805 operates one or more of the blowers 815, 820 or 825.
Fig.9 illustrates the block diagram of the operation of the controller. The block diagram illustrates the circuitry to operate the first blower 815, the second blower 820, and the third blower 825. The circuitry includes a thermistor 905 comprising a first temperature sensor 240, the second temperature sensor 245, and the third temperature sensor 250 to measure the temperature of the first battery pack 225, the second battery pack 230, and the third battery pack 235. The current output of the thermistor 905 is given to a signal conditioner 910. The signal conditioner 910 filters the electrical noises from the output signal of the thermistor 905 and the filtered output is given to a comparator 915. The comparator 915 compares the output of thermistor 905 with a threshold value. When the output of thermistor 905 exceeds the threshold value, the comparator 915 triggers the electrical switch 920 and thus operate the blower 925 comprising the first blower 815, the second blower 820 and the third blower 825. The first blower 815, the second blower 820, and the third blower 825 will therefore provide the movement of cooling air to the first battery pack 225, the second battery pack 230, and the third battery pack 235 respectively. In the present embodiment, the predetermined threshold value is 40 degree Celsius.
The subject matter described herein is not limited to motor driven scooter type vehicle. Rather, the subject matter described herein can be applied to any other vehicle using any other power source, and more particularly to small wheeled vehicles like motorcycles.
Although the subject matter has been described in considerable detail with reference to certain preferred embodiments thereof, other embodiments are possible. As such, the spirit and scope of the appended claims should not be limited to the description of the preferred embodiment contained therein

Claims

We Claim:
1. A step through two-wheeled vehicle 100, said two wheeled vehicle 100 comprising: a frame 105 extending longitudinally along said two wheeled vehicle 100; a footboard 125 extending downwardly and longitudinally of said frame 105, an electrical system 130 provided underneath said footboard 125; a bottom panel 220 for covering said electrical system 130, wherein said bottom panel 220 has a plurality of louvers (305/1, 305/2 and 305/3) provided on the surface of said bottom panel 220 allowing entry of air through said louvers (305/1, 305/2 and 305/3); said electrical system 130 comprises: a plurality of battery packs (225, 230 and 235); a plurality of temperature sensors (240, 245 and 250) wherein each of said temperature sensor (240, 245 and 250) is sensing the temperature of each of said battery packs 225, 230 and 235 respectively; a plurality of blowers (815, 820 and 825) provided in the forward portion of said battery packs 225, 230 and 235, wherein each of said blowers (815, 820 and 825) provide a movement of cooling air towards each of said battery packs (225, 230 and 235) respectively; a controller 805, wherein said controller 805 selectively operates said blowers (815, 820 and 825) based on an output from said temperature sensors (240, 245 and 250).
2. The two wheeled vehicle 100 as claimed in claim 1, wherein said footboard 125 is attached to said frame 105.
3. The two wheeled vehicle 100 as claimed in claim 1, wherein said louvers (305/1, 305/2 and 305/3) are placed at an angle of 45 degree with respect to the bottom
5 panel 220.
4. The two wheeled vehicle 100 as claimed in claim 1, wherein each of said blowers (815, 820 and 825) are attached to said frame 105.
5. The two wheeled vehicle 100 as claimed in claim 1, wherein said temperature sensors (240, 245 and 250) and said blowers (815, 820 and 825) are connected to
10 said controller 805 through a plurality of connectors 810.
6. The two wheeled vehicle 100 as claimed in claim 1, wherein said output of temperature sensors (240, 245 and 250) is 40 degrees Celsius.
■ 15
PCT/IN2008/000207 2007-04-05 2008-03-31 Electrical system for a step through two wheeled vehicle WO2008122985A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BRPI0808116 BRPI0808116A2 (en) 2007-04-05 2008-03-31 ELECTRICAL SYSTEM FOR A TWO-WHEEL STEP-THROUGH TYPE VEHICLE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN716/CHE/2007 2007-04-05
IN716CH2007 2007-04-05

Publications (1)

Publication Number Publication Date
WO2008122985A1 true WO2008122985A1 (en) 2008-10-16

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ID=39719127

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PCT/IN2008/000207 WO2008122985A1 (en) 2007-04-05 2008-03-31 Electrical system for a step through two wheeled vehicle

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BR (1) BRPI0808116A2 (en)
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WO (1) WO2008122985A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2532122A (en) * 2014-09-10 2016-05-11 Ford Global Tech Llc Battery box for an electric cycle
DE102015000579A1 (en) * 2015-01-16 2016-07-21 Audi Ag motor vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10297570A (en) * 1997-05-01 1998-11-10 Yamaha Motor Co Ltd Hybrid two-wheeler
JP2005093144A (en) * 2003-09-12 2005-04-07 Tokyo R & D Co Ltd Battery-cooling system, and power supply device and motor vehicle equipped with the system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10297570A (en) * 1997-05-01 1998-11-10 Yamaha Motor Co Ltd Hybrid two-wheeler
JP2005093144A (en) * 2003-09-12 2005-04-07 Tokyo R & D Co Ltd Battery-cooling system, and power supply device and motor vehicle equipped with the system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2532122A (en) * 2014-09-10 2016-05-11 Ford Global Tech Llc Battery box for an electric cycle
US9387906B2 (en) 2014-09-10 2016-07-12 Ford Global Technologies, Llc Battery box for electric cycle
GB2532122B (en) * 2014-09-10 2020-12-23 Ford Global Tech Llc Battery box for an electric cycle
DE102015000579A1 (en) * 2015-01-16 2016-07-21 Audi Ag motor vehicle

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BRPI0808116A2 (en) 2014-06-17

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