Sensor device and valve assembly with improved sealing features

A sensor device, comprising:

• a shell and a sensing assembly, the sensing assembly comprising a circuit substrate, a sensing element and a sleeve, the sensor device further comprising an inner cavity and a channel, the inner cavity and the channel being located on different sides in a thickness direction of the circuit substrate, respectively;
• wherein the sleeve is located on one side in the thickness direction of the circuit substrate, the sleeve has a cylinder wall, one end of the cylinder wall along an axial direction of the channel is hermetically connected to the circuit substrate, the cylinder wall of the sleeve is located at an outer periphery of the channel, the sensing element is electrically connected to the circuit substrate, the sensing element is configured to sense pressure and/or temperature of a fluid in the channel;
• and
• the shell has a fitting portion, the fitting portion and the sleeve are located on a same side in the thickness direction of the circuit substrate, the fitting portion has an accommodating portion, the sleeve is at least partially accommodated in the accommodating portion, the fitting portion comprises a first peripheral wall portion forming the accommodating portion, the first peripheral wall portion is in sealing connection with an outer peripheral side of the cylinder wall of the sleeve, and the inner cavity is not in communication with the channel.