Abstract: A battery assembly, an electric vehicle, and a method for monitoring battery are disclosed. The battery assembly includes a battery, a sensing part on the battery and an alarm module electrically connected to the sensing part. The sensing part is configured to generate a deformation sensing signal corresponding to a deformation of the battery. The alarm module is configured to issue an alarm when the deformation sensing signal exceeds a threshold.

Abstract: An in-car safety system includes: a detecting device, a processor, an in-car equipment and a piezoelectric device. The detecting device is disposed on a car. The processor is disposed in the car. The processor is electrically connected to the detecting device. The processor is configured to receive a detecting signal transmitted by the detecting device and transmit an electrical signal in accordance with the detecting signal. The in-car equipment is disposed in the car. The piezoelectric device is disposed on the in-car equipment. The piezoelectric device is electrically connected to the processor. The piezoelectric device is configured to receive the electrical signal and generate a vibration to the in-car equipment in accordance with the electrical signal.

Abstract: An in-car safety system includes: a detecting device, a processor, an in-car equipment and a piezoelectric device. The detecting device is disposed on a car. The processor is disposed in the car. The processor is electrically connected to the detecting device. The processor is configured to receive a detecting signal transmitted by the detecting device and transmit an electrical signal in accordance with the detecting signal. The in-car equipment is disposed in the car. The piezoelectric device is disposed on the in-car equipment. The piezoelectric device is electrically connected to the processor. The piezoelectric device is configured to receive the electrical signal and generate a vibration to the in-car equipment in accordance with the electrical signal.

Abstract: An optical component includes a housing. The housing defines a receiving cavity and includes a bottom plate and a side plate connecting a peripheral portion of the bottom plate. The optical component further includes a collimating component and a diffractive optical element (DOE) in the receiving cavity. The collimating component is configured for collimating the light into collimated light. The DOE includes a diffractive portion configured for converting the collimated light into structured light and a bezel surrounding the diffractive portion. The optical component further includes a first adhesive layer and a second adhesive layer. The first adhesive layer is between the bezel and the collimating component and contacts the side plate. The second adhesive layer filling a silt between the side plate and the collimating component.