Driving device for detecting mechanical characteristics and electrical characteristics of cells

A driving device for detecting mechanical characteristics and electrical characteristics of cells, comprising a piezoelectric stack, a bridge-type flexible hinge mechanism, a parallel hinge mechanism, a lead screw guide rail, a stepping motor, a linear displacement sensor, a force sensor, a ceramic needle, a first electrode, a second electrode, a cell container, an XY axis displacement platform, a positioning hole, a first metal base, a second metal base, a first metal connecting plate, a second metal connecting plate, a first pre-tightening wedge, a second pre-tightening wedge, a pre-tightening screw, and screws,

• wherein the lead screw guide rail is fixed to the first metal base;
• a driver main body of the driving device comprises the bridge-type flexible hinge mechanism and the parallel flexible hinge mechanism which are fixed to the first metal connecting plate by screws;
• the first metal connecting plate is fixed to the lead screw guide rail by the screws;
• the cell container is arranged above the XY axis displacement platform, and is adjusted to an appropriate position through the XY axis displacement platform;
• the first pre-tightening wedge and the second pre-tightening wedge are pre-tightened by the pre-tightening screw, and the second pre-tightening wedge is fixed to the first metal base by screws;
• the linear displacement sensor is mounted in the first pre-tightening wedge, the first metal base and the second metal base are configured for supporting, mounting and fixing other elements, and
• wherein the force sensor and the ceramic needle are fixed below the driver main body by the second metal connecting plate, the first electrode is attached to the ceramic needle, and the second electrode is attached to a bottom of the cell container;
• the first electrode and the second electrode are connected to an electrical impedance analyzer;
• and in a downward linear motion of the driving device, the ceramic needle is pressed down into the cell container to detect the mechanical characteristics and electrical characteristics of cells.