Design concept

The boat is designed to give freedom to people - and to simplify their life. The electric driveline is easy to use and gives minimum footprint to nature as it is silent and emission free.

Design sketch & animation of the electric boat Freepower® Solar Boat, MVP2. Design made by Pivot Industridesign

The autonomous idea

The autonomous idea is about freedom. Freedom to go whenever and wherever without fuel stops that creates unwanted detours. Freedom to harvest the energy around us!

An autonomous system is created when, for example, the system is self-sufficient in the energy it requires to operate the system. The electric boat Freepower gets its energy from the sun and recharges itself by just being outdoors! We can say it is "free" and does not depend on shore power to function.

 

To achieve autonomous operation every part in the powertrain is balanced to work seamlessly together. Every part, from solar panel down to propeller pitch, has carefully been chosen to match the surrounding parts in the system with the philosophy of keep it simple and minimalistic. This guarantees a robust system and high efficiency. 

Ecobalance

 The system control app monitor battery status. It gets information about incoming charging power from solar panels and consumed power to the electric outboard engine. By overlay these parameters the app compute net balance in battery. This is shown in Ecobalance view and help user to drive with minimal energy consumption. 

At sea on Bohus coast in Sweden with the family & Freepower ® Solar Boat MVP.

Engine run by solar energy 

Say goodbye to range anxiety! With the sun as primary source of power there are unlimited clean resources - all for free!

 

Photovoltaic panels are clean, silent, reliable and works without moving parts. They produce electric energy, the most noble energy of all, at all times during daylight. Today’s panels have an efficiency of approximately 20% so there is a huge potential in efficiency in the years to come. 

Performance

The boat is equipped with a 3kW electric outboard engine and batteries from ePropulsion. The solar panels are flexible SunPower cells from Sunfield New Energy. Together they perform 1kW.

 

Standard battery gives 3h (21NM) range at full speed (7kt) without charge from solar panels. At cruising speed (5,5kt) the range is 6h (33NM), still without help from solar panels. If longer range is required there is a twin battery option that doubles the range.

 

During daytime when solar panels add power, range can be much longer. If user go by Ecobalance batteries last all day long so range is highly up to each user’s individual driving pattern. 

Cruising speed 5,5 kn

Max speed
7 kn

Length 
6.2 m

Weight
700 kg

Solar cells
1 kW

Battery 9-18 kWh

Motor 
3 kW

Range example

Plan your route in the chart below to visualize the reach of your local archipelago or lake. The range is visualized for full speed (21NM) and marching speed (33NM).

Photo: Epropulsion

Hull design - form follows function

A lot of effort has been put in to streamline hull shape optimized for minimum wet surface at cruising speed. Industrial designer has worked close together with naval architect to come up with a hull that have both high performance and a nice aesthetic expression. We are working together with the design agency Pivot, Norway.

 

Aluminum is used throughout the design as it is highly recyclable, lightweight and at the same time a durable material.

Pivot+logo+2016+WHITE+[Converted]-01.png

Dashboard control in an app

Instead of traditional meters, monitoring of all systems are done by an app for tablets and phones. It’s simple to control the boat; the driver only needs to focus on steering wheel, throttle and the app. The app shows all needed information to driver in real-time. This gives the user freedom to do other things - like enjoy the ride?

To help user drive economic the app has an Ecobalance view where user can adjust throttle to follow net zero battery usage.

In future release it will be integrated in sea chart with possibility to compute the trip.

 

The app has different modes depending on user profile e.g. possibility to pay-to-use suitable for rental business models. 

 Circle of life

To make real impact for the environment it’s not good enough to just look at the parts when in use of product. We have always in mind and look for the part’s total life cycle. Therefore we have chosen aluminum as hull material. We are working on a battery recycling program with the battery producer and use as few parts as possible to reduce carbon footprint as much as possible.

 

We believe in protecting the circle of life – we just borrow the earth from next generation so we should leave it in better condition than when we accessed it!

 BJURTECH AS  

Bjellandveien 13, 3172 Vear, Tønsberg, Norway

+ 47 412 777 01   |    martin@bjurtech.com

 

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