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CN-224231937-U - Nondestructive lithium analysis detection device of lithium battery

CN224231937UCN 224231937 UCN224231937 UCN 224231937UCN-224231937-U

Abstract

The utility model discloses a nondestructive lithium analysis detection device of a lithium battery, which comprises a base, wherein the top of the base is fixedly connected with a detection main body, the top of the base is provided with a detection mechanism, the detection mechanism comprises an electric telescopic rod, the top of the electric telescopic rod is fixedly connected with a piston rod, the top of the piston rod is fixedly connected with a workpiece plate, the inside of the base is provided with a bidirectional motor, the output end of the bidirectional motor is fixedly connected with a screw rod, and the nondestructive lithium analysis detection device of the lithium battery is connected with the detection main body through a detection clamp and a signal wire, so that an alternating current signal required by Electrochemical Impedance Spectroscopy (EIS) detection can be accurately applied, and the impedance response of the lithium battery can be accurately received. According to impedance changes under different frequencies, the fine lithium precipitation condition inside the lithium battery can be perceived sharply, the accuracy of lithium precipitation detection is greatly improved, potential problems can be found in time, and the performance stability of the lithium battery is ensured.

Inventors

  • YANG YONG
  • YANG HUA

Assignees

  • 深圳市冠力达电子有限公司

Dates

Publication Date
20260512
Application Date
20250523

Claims (8)

  1. 1. The nondestructive lithium analysis detection device of the lithium battery comprises a base (1) and is characterized in that the top of the base (1) is fixedly connected with a detection main body (2), and the top of the base (1) is provided with a detection mechanism (3); Detection mechanism (3) are including electric telescopic handle (31), the top fixedly connected with piston rod (32) of electric telescopic handle (31), the top fixedly connected with work piece board (33) of piston rod (32), the inside of base (1) is provided with bi-directional motor (34), the output fixedly connected with lead screw (35) of bi-directional motor (34), the outside threaded connection of lead screw (35) has lasso (36), the top fixedly connected with slide bar (37) of lasso (36), the top fixedly connected with movable block (38) of slide bar (37), the top fixedly connected with connecting rod (39) of movable block (38), the top fixedly connected with of connecting rod (39) detects clamp (310), the outside fixedly connected with signal line (311) of detecting clamp (310), movable groove (312) have been seted up to the inside of base (1), the outside of base (1) is provided with control switch (313).
  2. 2. The lithium battery nondestructive analysis detection device according to claim 1, wherein the top of the workpiece plate (33) is provided with a positioning mechanism (4), the positioning mechanism (4) comprises a portal frame (41), the top of the portal frame (41) is fixedly connected with a movable pipe (42), the inside of the movable pipe (42) is movably connected with a movable rod (43), the top of the movable rod (43) is fixedly connected with a pulling cover (44), the movable rod (43) is fixedly connected with a compression spring (45), the bottom of the movable rod (43) is fixedly connected with a positioning plate (46), and the bottom of the positioning plate (46) is fixedly connected with a buffer cushion (47).
  3. 3. The lithium battery nondestructive analysis detection device according to claim 1, wherein the electric telescopic rod (31) is fixedly connected to the top of the base (1), and the workpiece plate (33) is movably connected to the upper side of the base (1) through a piston rod (32).
  4. 4. The lithium battery nondestructive analysis detection device according to claim 1, wherein the output ends of the bidirectional motor (34) are in opposite directions, and the screw rods (35) are symmetrically distributed on the outer side of the bidirectional motor (34).
  5. 5. The lithium battery nondestructive analysis device according to claim 1, wherein the slide bar (37) is slidably connected to the inside of the moving groove (312), and the moving block (38) is slidably connected to the top of the base (1).
  6. 6. The lithium battery nondestructive analysis detection device according to claim 1, wherein the detection clamps (310) are symmetrically distributed on the outer side of the workpiece plate (33), and one end of the signal wire (311) far away from the detection clamps (310) is fixedly connected in the detection main body (2).
  7. 7. The lithium battery nondestructive analysis detection device according to claim 2, wherein the portal frame (41) is fixed and symmetrically distributed on the top of the workpiece plate (33), and the movable rod (43) is movably connected inside the movable tube (42) through a compression spring (45).
  8. 8. The lithium battery nondestructive analysis device according to claim 2, wherein the number of the positioning plates (46) and the number of the buffer pads (47) are the same, and the positioning plates (46) and the buffer pads (47) are symmetrically distributed on the top of the workpiece plate (33).

Description

Nondestructive lithium analysis detection device of lithium battery Technical Field The utility model relates to the technical field of lithium battery detection, in particular to a nondestructive lithium analysis detection device of a lithium battery. Background In modern energy systems, lithium batteries are widely applied to the fields of electric automobiles, energy storage systems and various portable electronic devices by virtue of the advantages of high energy density, long cycle life and the like. However, in the process of frequent charge and discharge of the lithium battery, lithium precipitation occurs, so that the battery capacity is quickly reduced, the service life of the battery is greatly shortened, and the replacement cost is increased. The traditional lithium battery lithium separation detection method has a plurality of limitations. For example, although lithium dendrites can be visually observed by microscopic detection after the battery is disassembled, the battery cannot be used continuously once the battery is disassembled, which is too high in cost and impractical for a battery pack applied on a large scale, and some detection modes based on appearance or simple electrical parameters have low detection precision, and early-stage lithium precipitation signs inside the battery cannot be timely and accurately found, so that strict requirements on battery safety and performance reliability in practical application are difficult to meet. Therefore, the utility model provides a nondestructive lithium analysis detection device of a lithium battery. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides a nondestructive lithium analysis detection device of a lithium battery, so as to solve the problems. The utility model aims at realizing the technical scheme that the nondestructive lithium analysis detection device of the lithium battery comprises a base, wherein the top of the base is fixedly connected with a detection main body, and the top of the base is provided with a detection mechanism; The detection mechanism comprises an electric telescopic rod, a piston rod is fixedly connected to the top of the electric telescopic rod, a workpiece plate is fixedly connected to the top of the piston rod, a bidirectional motor is arranged in the base, a screw rod is fixedly connected to the output end of the bidirectional motor, a ferrule is connected to the outer side of the screw rod in a threaded mode, a slide rod is fixedly connected to the top of the ferrule, a moving block is fixedly connected to the top of the slide rod, a connecting rod is fixedly connected to the top of the moving block, a detection clamp is fixedly connected to the top of the connecting rod, a signal wire is fixedly connected to the outer side of the detection clamp, a moving groove is formed in the base, and a control switch is arranged on the outer side of the base. Preferably, the top of work piece board is provided with positioning mechanism, positioning mechanism includes the portal frame, the top fixedly connected with movable tube of portal frame, the inside swing joint of movable tube has the movable rod, the top fixedly connected with pulling cover of movable rod, fixedly connected with compression spring on the movable rod, the bottom fixedly connected with locating plate of movable rod, the bottom fixedly connected with blotter of locating plate. Preferably, the electric telescopic rod is fixedly connected to the top of the base, and the workpiece plate is movably connected to the upper side of the base through a piston rod. Preferably, the output ends of the bidirectional motor are in opposite directions, and the screw rods are symmetrically distributed on the outer side of the bidirectional motor. Preferably, the sliding rod is slidably connected inside the moving groove, and the moving block is slidably connected at the top of the base. Preferably, the detection clamps are symmetrically distributed on the outer side of the workpiece plate, and one end, far away from the detection clamps, of the signal wire is fixedly connected to the inside of the detection main body. Preferably, the portal frame is fixed and symmetrically distributed at the top of the workpiece plate, and the movable rod is movably connected inside the movable pipe through a compression spring. Preferably, the number of the positioning plates is the same as that of the buffer pads, and the positioning plates and the buffer pads are symmetrically distributed at the top of the workpiece plate. Advantageous effects Compared with the prior art, the utility model has the following beneficial effects: (1) According to the nondestructive analysis lithium detection device for the lithium battery, the detection mechanism is connected with the detection main body through the detection clamp and the signal wire, and can accurately apply alternating current signals required by Electrochemical Impedance Spectrosco