Abdul Lateef Dar

Fig.1(b):-Comparison of Torque-Speed Characteristics of Combustion Engine and Electric Motor.

2. BATTERIES

A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices.
In Tiger Electric, the motor is paired with an IP67-compliant 25.5kW natural-cooling compact battery that can be juiced up to 100 per cent using a regular home charging point in 10 hours. Sonalika is also offering an optional fast-charging system, which can charge Tiger Electric's battery in four hours. The new Tiger Electric tractor is equipped with the Sonalika transmission. It offers a top speed of 24.93kmph
and a battery backup of 8 hours while operating with a 2- tonne trolley.

Fig.2:- BATTERY

Exchangeable Battery Packs
This concept bases on exchangeable battery packs for the tractor when working in plantations for an extended period. The tractor transports a trailer with a set of exchangeable battery packs to the place of work (Fig. 2(a)). Whenever a battery pack on the tractor is exhausted, it is replaced with a fully charged one. Work continues until the last battery pack is down to a margin, which ensures a return to the base. To exploit this concept to a maximum, a second set of mobile exchangeable battery pack is simultaneously charged at the home base.




Fig.2(a) :- Charging batteries at the home base and operating the tractor in the field using the on-board battery pack. Operating time extension by battery- swapping between trailer and tractor.

3.