NOVELTY - The battery cell module (10) has battery cells (11) such as lithium-ion battery cell that are provided in series and arranged in battery. The current is flowed through battery in normal operation of battery. A cell electronics is provided with an arrangement (18) of power-electronic semiconductor switches (12,13) which are switched in normal operation in accordance with specific switching position combination and switched to prevent malfunction in other switching position combination, in which the battery power flux is maintained by battery.    USE - Battery cell module of battery used in motor car (all claimed). Can also be used in hybrid and electric vehicles.    ADVANTAGE - Since the cell electronics is provided with arrangement of power-electronic semiconductor switches which are switched in normal operation in accordance with specific switching position combination and switched to prevent malfunction in other switching position combination, in which battery power flux is maintained by battery, when safety-critical condition occurs, the intrinsic safety of the battery cell module is increased efficiently in reliable manner. Hence the battery cell is reliably protected, and the operation of battery is maintained at the same time. The energy content per battery cell is increased effectively. The security requirements of battery management system are reduced due to security of battery cell module. The availability of battery is increased and battery backup is created efficiently. The failure or malfunction is automatically avoided in safety-critical case. The destruction of the battery cell is automatically prevented.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a battery;    (2) a motor car; and    (3) a method for operating battery cell module.    DESCRIPTION OF DRAWING(S) - The drawing shows a circuit diagram of the battery cell module.    Battery cell module (10)    Battery cell (11)    Power-electronic semiconductor switches (12,13)    Battery cell terminals (14,15)    Arrangement of power-electronic semiconductor switches (18)