Electric Vehicles - Update

Blog overview

By Ian Dunbar on Monday August 28, 2017

There was a time when I thought electric vehicles (EV’s) would be nothing more than a passing phase. With range (travel distance), price and lack of infrastructure (charging points) being major issues, I genuinely thought they would rapidly fade away and be nothing more than a distant memory as we all revert to the trusty old internal combustion engine. Recent news though has seemingly proved me very wrong indeed.

Strong increase of electric vehicles
Only a matter of weeks ago, France announced the total ban of fossil fuel vehicles in 2040 with the UK quickly following suit by declaring all new vehicles sold from 2040 must be alternatively fuelled. China now sells more EV’s than the USA and although it only accounts for a little more than 1% of all newly registered vehicles (2016), it still shows a marked increase on recent years. Volvo have also announced that from 2019 all cars it makes will be either electric or hybrid. It is clear to me that the world has started to change.

Little more risk
So, the likelihood of encountering EV’s during operational incidents will increase exponentially in the coming years. Regular readers of my blogs will know that I do not promote an alarmist approach and seek to empower rescuers at every opportunity. I still believe that providing EV’s are dealt with in a safe methodical way, they will continue to pose little more risk than conventional vehicles. Remember that there has still been no reported incidents of emergency responders being injured by EV’s during extrication so all risks must be kept in context.

Approach to electric vehicles
The shutdown method hasn’t really changed a great deal with the general approach being;

-          Identification

-          Turn off ignition and remove keys

-          Chock wheels

-          Put gear into ‘Park’

-          Isolate 12v battery (thus isolating airbag/SRS systems

-          Remove selected fuses

-          Remove Service Plug**

**Alternatives to removing service plug include e.g. some Tesla models requiring the cutting of the ‘First Responder Loop’. Click here for more information (TESLA S Emergency Response Guide).

In relation to Tesla S
In addition to the above (and once again in relation to Tesla Model S) there are other vehicle anatomy considerations provided by the manufacturer. In the event of power isolation, mechanical access can be gained to the hood and to the rear doors by use of strategically placed levers.

To manually open the hood the rescuer must pull the release cables located in the front wheel arch liners. First, operating the primary lever located in the right-hand wheel well and then the secondary lever located in the left-hand wheel well. To access these levers, the wheel arch liners must be removed (see below)

 

The rear doors can be accessed by folding back the edge of the carpet below the rear seats to access the mechanical release cables. Pull the release cables towards the centre of the vehicle (see below).

Tesla S release cables 

New era
In my opinion, the last year or two has marked the biggest shift in vehicle technology and anatomy in over two decades. It feels like we are entering a new era in vehicle design, especially when we take a close look at manufacturers like TESLA who seem to be pushing the envelope. The next few years will be very interesting and maybe we do have to consider adopting more than a generic safe approach (something I have always advocated) and we will simply have to have a wider understanding of each individual vehicle design; something which will test the most experienced rescuer. Whatever the future holds it looks like it will be battery powered; something I genuinely never thought I would see.

As ever, I welcome your comments.

Ian Dunbar

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