Electronic encoder module for drug delivery device and drug delivery device

The invention relates to charging an electronic module (2) of a drug delivery device (1) and a corresponding charging system. The electronic encoder module (2) may comprise: at least one sensor unit; a PCBA (6) having a processor configured to control operation of the at least one sensor unit and to process and/or store signals from the at least one sensor unit; a rechargeable battery (5) connected to the PCBA (6); and a cap-shaped housing (4) which at least partially encloses the at least one sensor unit, the PCBA (6) and the battery (5). The housing (4) comprises a lateral surface (11) and/or a top surface (10) arranged at the proximal end, wherein at least two electrical contacts (8, 9) connected to the battery (5) and/or the PCBA (6) are provided on the lateral surface (11) and/or arranged on the top surface (10) at the proximal end. 本发明涉及对药物递送装置(1)的电子模块(2)进行充电以及相应的充电系统。电子编码器模块(2)可以包括：至少一个传感器单元；具有处理器的PCBA(6)，该处理器被配置为控制该至少一个传感器单元的操作、以及处理和/或存储来自该至少一个传感器单元的信号；连接到PCBA(6)的可充电电池(5)；以及帽形外壳(4)，该帽形外壳至少部分地封围该至少一个传感