E-car Charger App
Help e-car drivers manage car battery and find e-car chargers
E-car charger app
Overview

Increasingly, customers and manufactures choose electric/hybrid vehicles over traditional gasoline cars, which makes the infrastructure of e-chargers in high demand in urban areas. Next to it, the current e-chargers can usually only be activated by chip-cars. This requires extra effort from users and it's difficult for e-charger companies to update real-time information.

The goal of this project was to develop a comprehensive system tackling the current issues. On the front-end, users can easily manage their battery and plan a charging session with the mobile app. On the back-end, the e-charger company can learn customer behaviors and needs by the data collected.

Time

02/2015 - 05/2015

Role

Interaction design
Visual design
Digital prototype

User stories

At the begining, we involved the client in the brainstorming session to understand users' needs and wishes. In the session, the customer journey was made collaboratively, based on which some app features were came up. After analyzing and orginazing all the information, the detailed user stories were formulated. The following are the main requirements of the app in the user stories:

  • Users can register an account in the app.

  • Users can plan a route to an e-charger and get estimated charging time.

  • Users can activate an e-charger and pay directly by the app.

  • Users would get notified when it finishes charging or the desirable chargers get occupied.

  • The app would give suggestion of charge speed and location based on users' preferred time/cost.

E-car charger app

Brianstorming session

Interaction design

Based on the users stories, I first made the flowchart and then the wireframes to communicate the flow of the app. The clinet was involved in this stage several times to reach the agreement on the key features.

E-car charger app

Flowchart

E-car charger app

Wireframes

E-car charger app

Design iterations

Visual design

Generally speaking, the design intends to create a "premium" look and feel, because e-car drivers are early adopters who usually comes from higher class. The interaction should be smooth and effortless because it's suppose to lubricate the current charging process.

E-car charger app

App key screens

E-car charger app

App logo design

E-car charger app

Iconography

Digital prototype

During the iteration process, the digital prototype was made to communicate the transition and interaction in the app with developers if necessary.

E-car charger app