Completely automated operation of driverless transport systems
1 | Challenge:
Enabling a completely automated operation of driverless transport systems
A completely driverless transport system (AGV) was to be created for a Chinese steel manufacturer. In order to meet the customer requirements, HOPPECKE, together with its long-standing customer DIMOS Maschinenbau GmbH, provided a custom-fit solution.
Many businesses are increasingly faced with the challenge of finding an internal transport solution that is both flexible and fully automated. This is also the case with DIMOS Maschinenbau GmbH, a long-standing customer of HOPPECKE.
Controlled by networked systems, driverless transport systems are at the heart of every state-of-the-art warehouse. They not only facilitate work in intralogistics, but also they ensure that the required goods are transported autonomously to the right place at the right time, giving greater efficiency and cost savings to the customers operation.
However, although the AGVs perform their work autonomously, without ground contacts for automatic inductive charging, they require human intervention to change and recharge their batteries. This human intervention can slow down the operation and reduce the efficiency of the intralogistics process.
2 | Solution:
Flexible and fully automated battery changing station
In this application, a driverless transport system drives autonomously into the changing station when its battery is empty. An automated swap car pulls the empty battery out of the AGV and drives it to a free charging station. The battery is then automatically connected, charged and monitored.
With a total of 18 batteries and 13 chargers, a flexible and fully automated battery changing station for AGVs was put into operation for the first time in April 2020. The battery changing station uses the low-maintenance and quick-charging trak | uplift batteries in combination with the matching trak | charger HF premium with intelligent power module management.
Each battery is equipped with an intelligent battery controller, the trak | collect. The battery controller reads relevant data such as the charging status and operational readiness of the battery, and then communicates this with the chargers and the HOPPECKE trak | monitor 4.0, a cloud-enabled system for battery, charging station and data management.
The trak | monitor 4.0 processes the data from the chargers and the battery controller. Via a standardized communication interface, it makes this data available for the controlling of the system, in this fully autonomous application. In order to insert a charged battery into a driverless transport system, the trak | monitor 4.0 informs the plant control system of the position of the battery proposed for replacement. The battery is autonomously removed from the charging station by the battery changing car, driven to the AGV and inserted into it. After the successful exchange, the AGV can continue its job with a fully charged battery. Therefore no human assistance is required for the entire process.
If the HOPPECKE battery controller trak | collect detects a need for maintenance on a battery, the trak | monitor 4.0 will transmit the corresponding message to the central management system. The battery is then automatically moved to a separate service station where the necessary maintenance work can be carried out, allowing for a quick reaction to any needed service or maintenance.
3 | Products:
- Batteries: trak | uplift
- Charger: trak | charger HF premium
- Battery controller: trak | collect
- Battery management system: trak | monitor 4.0
"For our project with six fully automated industrial trucks and a flexible, fully autonomous battery changing station, in HOPPECKE we have found our partner for intelligent battery management systems, to implement the project successfully. We would like to thank the HOPPECKE company for the good cooperation and for a smooth process".
Steffen Bohl, Electrical engineering development DIMOS Maschinenbau GmbH