Abstract: A force sensing device comprises a top cover, a base, and an elastic body arranged therebetween. The cover includes a sphere and a peripheral edge. The base includes a cylindrical body and a flange for fixing to a housing of a force sensor. An installation hole is formed in the cylindrical body for receiving the sphere. The sphere is rotatable within the hole such that the cover is rotatable relative to the base to a predetermined tilt position when subjected to an off-axis overload. When no load is applied to the cover, the peripheral edge of the cover and the flange of the base are separated by a distance to allow the cover to be moved relative to the base. When the cover is rotated to the predetermined tilt position, the peripheral edge of the cover leans against the flange of the base.

Abstract: The invention relates to a compound represented by formula (I), a nonaqueous electrolyte additive containing same, a nonaqueous electrolyte and a power storage device, and the use thereof for the nonaqueous electrolyte additive.

Abstract: An automatic charging vehicle, a method for operating the automatic charging vehicle, and an automatic charging system. The automatic charging vehicle includes: an automatic traveling module, which is configured to move, according to a route between the automatic charging vehicle and a device to be charged, to the device to be charged; a power module, which is configured to store and provide electric energy; and an automatic docking and separating device, which is configured to execute docking and separating between a first connector and a second connector capable of being in electrical contact with the first connector, the first connector and the second connector being used for transmitting electric energy.

Abstract: The present invention discloses a method for detecting the mechanical response of a mechanical component by an organic mechanoresponsive fluorescent material, comprising the following steps of: selecting an organic mechanoresponsive fluorescent material; preparing an organic mechanoresponsive fluorescent material solution; forming a film on a metal surface; calibrating fluorescence intensity and obtaining the fluorescence intensity and distribution in a crack tip area; observing the fluorescence signal generated at cracks to monitor the occurrence of fatigue cracks, and predict a propagation pathway of fatigue cracks by using the fluorescence intensity distribution in the crack tip area.

Abstract: An electric energy conversion and control device includes an electric energy conversion unit configured to perform electric energy conversion, a connection end of energy storage battery pack configured to connect to the energy storage battery pack, a safety device connected in a connection line between the electric energy conversion unit and the connection end of the energy storage battery pack to protect the electric energy conversion and control device from damage caused by excessive current, a DC circuit breaker connected in the connection circuit, a main contactor connected in the connection line, and a control module configured to control the electric energy conversion unit and monitor and manage the energy storage battery pack. The invention also relates to an energy storage system.

Abstract: A battery charging and discharging device, includes a power conversion unit configured to perform electrical conversion; a connecting end for the energy storage battery pack configured to connect an energy storage battery pack; a connecting end for charging and discharging configured to connect a charging power supply or a device to be charged or a load. A first charging switch and a second charging switch are arranged between the connecting end for charging and discharging and the input of the power conversion unit, and between the output of the power conversion unit and the connecting end for the energy storage battery pack respectively. A first discharging switch and a second discharging switch are arranged between the connecting end for the energy storage battery pack and the input of the power conversion unit, and between the output of the power conversion unit and the connecting end for charging and discharging respectively.

Abstract: The present invention discloses a method for detecting the mechanical response of a mechanical component by an organic mechanoresponsive fluorescent material, comprising the following steps of: selecting an organic mechanoresponsive fluorescent material; preparing an organic mechanoresponsive fluorescent material solution; forming a film on a metal surface; calibrating fluorescence intensity and obtaining the fluorescence intensity and distribution in a crack tip area; observing the fluorescence signal generated at cracks to monitor the occurrence of fatigue cracks, and predict a propagation pathway of fatigue cracks by using the fluorescence intensity distribution in the crack tip area.