The trend for electric vehicles is clear. However, their success depends on high-performance and cost-effective batteries. In the UK, the pilot project AMPLiFII at WMG is laying the foundations of a new generation of traction batteries. The project includes innovative automation technology from Horizon Instruments with a Festo pick and place solution.
The development of electric vehicles is gathering speed. China has set itself and car manufacturers ambitious targets, and aims for 12 per cent of all vehicles to be electric by 2020. France wants all cars sold after 2040 to be electric. Volvo has announced its intention to end the production of vehicles powered by internal combustion engine in 2019. The London Taxi Company has also signalled its intention to enter the electric vehicle market by changing its name to the London Electric Vehicle Company. The new taxis will have the same classic look as their predecessors, but will be cleaner and quieter. The UK government has recognised the shift towards electric vehicles, and in July 2017 announced a major investment programme to develop battery technology.
The pilot project Automated Module-to-pack Pilot Line for Industrial Innovation, or AMPLiFII for short, is demonstrating how efficient automation can contribute to the competitive production of traction batteries in Europe.
High-speed battery cell pick & place with the planar surface gantry EXCH from Festo.
After testing, the battery cells are aligned accurately and inverted if necessary. The pick and place system then inserts them into the module located on a conveyor. The plant can be configured to handle the exact number of battery cells, which can sometimes vary. 100 individual cells per module is typical, with a total weight of approximately 9 kg once assembled. Festo delivered a compact complete solution using Cartesian robot technology for fast and precise handling. “We didn’t need to coordinate multiple suppliers or worry about product compatibility”, explains Daniel Bolton. “Within just eight weeks of the order being placed we had a custom system. Festo also provided us with technical support throughout the design, installation and commissioning process.” With the new automation solution, each cell can be picked, rotated, aligned and placed in the modules within 1.2 seconds.
At the heart of the battery pick and place system is the Festo EXCH-60. The planar surface gantry is aimed at high-speed assembly operations where small, light mass-produced items need to be positioned quickly and flexibly. Powered by two fixed motors, the EXCH delivers an optimum dynamic response. By eliminating the need to use separate gantries for each axis, it delivers precise alignment. At speeds of up to 5 m/s and acceleration rates of up to 50 m/s2 it is capable of 100 picks per minute with a repetition accuracy of ±0.1 mm. For Steve Sands of Festo, using the EXCH is a significant step: “This project is the very first time that the planar surface gantry from Festo has been used in the UK. The automation technology now incorporated in this pilot line for electric vehicle batteries was originally developed for the construction of solar panels. It is ideal for handling delicate components and placing them with great precision.” The 2D planar surface gantry is controlled by a CPX valve terminal. It allows state-of-the-art electronics and pneumatics to sit on a single, stand-alone base.