| 摘要 |
The invention relates to an electrochemical storage device (1) having a state detector (10), comprising an electrochemical storage device (1), which has a wall (5) that surrounds an electrochemical storage material (2), wherein the state detector (10) has at least one ultrasonic transmitter (11) and at least one ultrasonic receiver (12), which are attached to the side of the wall (5) facing away from the electrochemical storage material (2), and wherein the electrochemical storage material (2) is subject to a volume change during operation of the storage device (1), and wherein the electrochemical storage material (2) is liquid during operation of the storage device (1) and is in direct contact with the wall (5) and the ultrasonic transmitter (11) and the ultrasonic receiver (12) are attached to the wall (5) in such a way that the ultrasonic transmitter and the ultrasonic receiver are acoustically coupled to the wall (5). |
