Bye bye “drain”

The Jedlix App November 4, 2020, Ruben Middelkoop

How we solved phantom drain by our new State Machine

Any connected app will use your car’s battery a little bit, even when it’s off! We have implemented a new intelligent learning system for communicating with your car that reduces this phenomenon as much as possible!

Connecting to your car provides endless opportunities to enjoy a smarter electric vehicle experience. You can check your battery status, get notifications if the charger suddenly stops working, and even control your charging so that you lower your electricity costs. All of these great features are the reason why nowadays about 90% of new electric vehicles have standard connectivity built-in. However, if you use these features regularly and track your car too often, you may drain your car’s battery. For some electric vehicle models, this drain is quite significant. Just like humans, cars need a rest sometimes too. At Jedlix, our main concern is having a sustainable impact through smart charging. In this post, our business analyst, Deniz Ozer, explains what causes your car’s battery to drain and how Jedlix’s state machine technology helps to reduce it.

 

Battery drain in electric vehicles

Battery drain is the energy lost from your car’s battery when it is idle. Among electric vehicle owners, this is popularly known as the phantom or vampire drain. Besides allowing your car to move from A to B, the battery is also used to run every other system in your car. It is even used to keep the most precious item in the car healthy: the battery itself. Even when the car is still, the battery carries out thermal management to make sure that the high voltage battery is at an optimal temperature. It also charges your 12V battery (yes, most electric vehicles still have an additional 12V battery). The 12V battery supports the infotainment and connectivity systems in your car. The drain caused by these battery operations can be quite significant, particularly at extreme temperatures or when many of the car’s systems are running and keeping the car “awake”.

 

Incoming: the Jedlix state machine

To reduce the impact that Jedlix has on a car’s battery by keeping its systems awake and running, we have developed a state machine solution. A state machine can be described as “a system with a finite number of states; it is also known as a finite-state machine (FSM). Based on a system’s current state and a given input, the machine performs state transitions and produces outputs”. In practice, this means that Jedlix takes specific parameters from the car to reduce the number of times it needs to interact with the vehicle. This allows Jedlix using as few resources as necessary. Thanks to advanced algorithms embedded in the state machine, we, for example, restrict interactions to moments when the car is smart charging at home.

This has helped to bring down Jedlix’s impact on battery drain to a level that is similar to that caused by regular apps and connections. The state machine technology was developed in close alignment with our automotive partners and Jedlix beta users. This allowed us to iteratively test and improve our design while ensuring that we followed the best practices recommended by our partners. We personally want to thank our partners and community for this support.

 

Other tips for reducing battery drain

  • Changes in temperature and using the air conditioning can cause battery drain and also affect your car’s driving range. When possible, try to park your car somewhere where it will not heat up or cool down too much in Summer or Winter. Temperature changes can cause battery drain and also affect your car’s driving range. When possible, try to park your car somewhere where it will not heat up or cool down too much in Summer or Winter.
  • Limit your use of the car’s resource-intensive functions, such as Sentry Mode and Bluetooth.
  • Switch off the “always-on” features of connectivity solutions and interact less frequently with your car via its connected apps.

Jedlix works closely with car manufacturers like Renault, Tesla and Jaguar. Interested in how our technology can help your business? Contact us at partners@jedlix.com. We are happy to share our best practices.

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(Source: Tesla Netherlands)

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