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CN-119894613-B - OCV detection method and detection equipment

CN119894613BCN 119894613 BCN119894613 BCN 119894613BCN-119894613-B

Abstract

The application provides an OCV detection method and detection equipment, wherein the OCV detection method comprises the steps of detecting an OCV of an incoming material to be detected, transmitting the incoming material to be detected to an OCV detection station for detection, transmitting all incoming materials to a replacement station when a detection result is unqualified, detecting an OCV of the incoming material of a transfer battery at the transfer station, wherein the number of the detected incoming materials of the transfer battery is one or more, replacing the battery once, transferring defective OCV in the incoming material of the battery to be detected to the transfer station, and transferring the defective OCV in the incoming material of the transfer battery to the replacement station for replacement. Therefore, besides the conventional OCV detection of the battery incoming material to be detected, the OCV detection of the transferring battery incoming material can be performed, so that more batteries can be detected in unit time, and the detection efficiency is higher.

Inventors

  • CAO WEI
  • WEI WENCHAO
  • CHEN WENTAO

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260508
Application Date
20230621

Claims (13)

  1. 1. An OCV detection method is characterized in that, the OCV detection method comprises the following steps: OCV detection of the incoming materials to be detected, transmitting the incoming materials of the batteries to be detected to an OCV detection station for detection, and transmitting all the incoming materials to a replacement station when the detection result is unqualified; OCV detection is carried out on the incoming materials of the transfer battery at the transfer station, and the number of the detected incoming materials of the transfer battery is one or more; the method comprises the steps of replacing a battery once, transferring an OCV detection defective product in the incoming material of the battery to be detected to a transfer station, and transferring the OCV detection defective product in the incoming material of the transfer battery to a replacement station for replacement; The OCV detection of the incoming material to be detected and the OCV detection of the transferring incoming material are two detection positions which are not mutually interfered.
  2. 2. The OCV detection method according to claim 1, the OCV detection method is characterized by further comprising the following steps: and detecting information of the incoming materials to be detected, transmitting the incoming materials of the battery to be detected to a replacement station for information acquisition, and stopping all the incoming materials to the replacement station when the information acquisition result is unqualified.
  3. 3. The OCV detection method according to claim 2, further comprising: Detecting information of transfer incoming materials, acquiring information of transfer battery incoming materials at a transfer station, wherein the number of the transfer battery incoming materials for acquiring information is one or more; And (3) secondary replacement of the battery, transferring the information unqualified product in the to-be-detected incoming material to a transfer station, and transferring the information qualified product in the transfer battery to a replacement station for replacement.
  4. 4. The OCV detection method according to claim 1, wherein in the step of detecting the OCV of the relay incoming material, the detection defective product of the relay battery incoming material at the relay station is classified and stored.
  5. 5. The OCV detection method according to claim 3, wherein in the step of detecting the incoming material information, defective products of the detection of the incoming material of the transfer battery at the transfer station are classified and stored.
  6. 6. A detection apparatus for implementing the OCV detection method according to any one of claims 1 to 5, comprising: The transmission line is used for conveying incoming materials of the battery to be tested and is provided with an OCV detection station and a replacement station; The transfer station is used for storing a plurality of transfer battery supplies; The first OCV detection device is used for carrying out OCV detection on incoming materials of the battery to be detected; the second OCV detection device is used for transferring the incoming materials of the battery to perform OCV detection; The transfer device is used for realizing the replacement of the incoming materials between the incoming materials of the battery cell to be tested and the incoming materials of the transfer battery; The first OCV detection device is arranged at the OCV detection station, the transfer device is arranged between the transfer station and the replacement station to reciprocate, and the second OCV detection device is arranged on the transfer device and can reciprocate between the transfer station and the replacement station.
  7. 7. The test apparatus of claim 6, wherein the first OCV test device comprises a bracket and a plurality of first test probe mechanisms slidably coupled to the bracket in a first direction.
  8. 8. The apparatus of claim 6, wherein the transfer device comprises a first linear module, a second linear module slidably coupled to the first linear module, and a gripper mechanism disposed on the second linear module, one end of the first linear module extends to the replacement station and the other end extends to the transfer station, the second linear module reciprocates relative to the first linear module in a first direction, the gripper mechanism reciprocates relative to the second linear module in a second direction, and the first direction is perpendicular to the second direction.
  9. 9. The apparatus of claim 8, wherein the second OCV test device comprises a second test probe mechanism disposed on the second linear module.
  10. 10. The apparatus according to any one of claims 6 to 9, further comprising an information collection mechanism provided on the transfer device and capable of reciprocating between the transfer station and the replacement station.
  11. 11. The inspection apparatus according to claim 6 to 9, wherein the transfer station includes a storage box having a plurality of storage cells formed therein and a tray mechanism for supporting the storage box.
  12. 12. The detecting device for detecting a rotation of a motor rotor as claimed in claim 11, wherein the tray mechanism includes at least two tray main bodies stacked one above the other and a slide rail structure provided between any adjacent two of the tray main bodies, wherein one of the tray main bodies slides relative to the other tray main body along a guiding direction of the slide rail structure.
  13. 13. The apparatus of claim 12, wherein the rail structure comprises a rail on one of the tray bodies and a slider on the other tray body, the slider sliding the connector to the rail.

Description

OCV detection method and detection equipment Technical Field The application relates to the technical field of OCV detection, in particular to an OCV detection method and a detection device capable of implementing the OCV detection method. Background After the battery monomer is subjected to the processes of formation, capacity division, code pasting and the like, an OCV (Open Circuit Voltage ) test is further required, and parameters such as a K value (the K value is the voltage drop of the battery monomer in unit time and reflects the self-discharge rate of the battery monomer), current, voltage, capacity and the like of the battery monomer can be obtained through the OCV test so as to screen out the battery monomer with unqualified electrochemical parameters, thereby ensuring the quality of each batch of battery monomer. At present, the OCV detection process of the battery is as follows, the incoming materials of the battery monomers in batches are transmitted to the OCV detection station by the transmission line, the battery monomers in the first batch subjected to detection are stored in the transfer station, however, the battery monomers in the second batch are transmitted to the OCV detection station for detection, once defective products occur, the defective products in the first batch in the transfer station are supplemented to the second batch, so that the battery monomers in the second batch are ensured to be detected to be qualified and then transmitted to the next station, and thus, the detection efficiency of the current OCV detection method is relatively low. Disclosure of Invention The embodiment of the application aims to provide an OCV detection method and detection equipment, and aims to solve the technical problem that the detection efficiency of the conventional OCV detection method is low. The technical scheme adopted by the embodiment of the application is as follows: In a first aspect, an embodiment of the present application provides an OCV detection method, including: OCV detection of the incoming materials to be detected, transmitting the incoming materials of the batteries to be detected to an OCV detection station for detection, and transmitting all the incoming materials to a replacement station when the detection result is unqualified; OCV detection is carried out on the incoming materials of the transfer battery at the transfer station, and the number of the detected incoming materials of the transfer battery is one or more; and the battery is replaced once, the OCV detection defective products in the incoming materials of the battery to be detected are transferred to the transfer station, and the OCV detection defective products in the incoming materials of the transfer battery are transferred to the replacement station for replacement. The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages: According to the OCV detection method provided by the embodiment of the application, OCV detection is carried out on the incoming materials of the battery to be detected, and meanwhile, OCV detection is also carried out on the incoming materials of the transfer battery, so that two OCV detection stations are arranged in the battery production process, and the two OCV detection stations are mutually noninterfere, so that the incoming materials to be detected can be stably output into batches of good products, and the detected good products in the incoming materials of the transfer battery and the detected defective products in the incoming materials of the battery to be detected can be replaced. Therefore, besides the conventional OCV detection of the battery incoming material to be detected, the OCV detection of the transferring battery incoming material can be performed, so that more batteries can be detected in unit time, and the detection efficiency is higher. In some embodiments, the OCV detection method further comprises: and detecting information of the incoming materials to be detected, transmitting the incoming materials of the battery to be detected to a replacement station for information acquisition, and stopping all the incoming materials to the replacement station when the information acquisition result is unqualified. By adopting the technical scheme, the method can also carry out corresponding information detection on the incoming materials of the battery to be detected, and the battery with unqualified information acquisition stays at the replacement station to wait for replacement. In some embodiments, the OCV detection method further comprises: Detecting information of transfer incoming materials, acquiring information of transfer battery incoming materials at a transfer station, wherein the number of the transfer battery incoming materials for acquiring information is one or more; And (3) secondary replacement of the battery, transferring the information unqualified product in the to-be-detected inc