Ocv detection method and detection device

Patent metadata

Field	Value
Publication number	US-12591016-B2
Application number	US-202418427403-A
Country	US
Kind code	B2
Filing date	Jan 30, 2024
Priority date	Jun 21, 2023
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

An OCV detection method comprises: performing OCV detection on to-be-detected materials, wherein to-be-detected battery materials are transported to an OCV detection location for detection, and when the detection result is unqualified, all the materials are transported to a replacement location; performing OCV detection on transferred materials, wherein the OCV detection is performed on transferred battery materials at a transfer station, and the quantity of the detected transferred battery materials is one or more; and performing primary battery replacement. Ater the OCV detection, defective products in the to-be-detected battery materials are transferred to the transfer station, and good products in the transferred battery materials are transferred to the replacement location. Accordingly, in addition to performing OCV detection on regular to-be-detected battery materials, the OCV detection can be performed on transferred battery materials, so that it is possible to detect more batteries per unit time and achieve a high detection efficiency.

First claim

What is claimed is:

1 . An open circuit voltage (OCV) detection method, comprising:
performing OCV detection, via a transmission line, on one or more to-be-detected battery materials at a first location to obtain a detection result, and in response to the detection result not satisfying a first condition, transporting the one or more to-be-detected battery materials to a second location; performing OCV detection, via the transmission line, on one or more transferred battery materials at a third location; performing primary battery replacement, including transferring one of the one or more to-be-detected battery materials that does not meet a criteria to the third location, and transferring one of the one or more transferred battery materials that meets the criteria to the second location for replacement; collecting, via a collection mechanism, information of the one or more to-be-detected battery materials at the second location, wherein the information of the one or more to-be-detected battery materials comprises batch information or production date information of the one or more to-be-detected battery materials; collecting, via the collection mechanism, information of the one or more transferred battery materials at the third location, wherein the information of the one or more transferred battery materials comprises batch information or production date information of the one or more transferred battery materials; and performing secondary battery replacement, including transferring one of the one or more to-be-detected battery materials whose information does not satisfy a second condition to the third location, and transferring one of the one or more transferred battery materials whose information satisfies the second condition to the second location for replacement.

2 . The OCV detection method according to claim 1 , further comprising:
classifying and storing one of the one or more transferred battery materials that does not meet the criteria at the third location.

3 . A detection device, configured to implement the OCV detection method according claim 1 , wherein the detection device comprises:
the transmission line, the transmission line being used to transport the one or more to-be-detected battery materials, and the transmission line being provided with the first location and the second location; a first OCV detection apparatus, the first OCV detection apparatus being used to perform OCV detection on the one or more to-be-detected battery materials; a second OCV detection apparatus, the second OCV detection apparatus being used to perform OCV detection on the one or more transferred battery materials; and a transit apparatus; wherein the first OCV detection apparatus is arranged at the first location, the transit apparatus moves back and forth between the third location and the second location, and the second OCV detection apparatus is arranged on the transit apparatus, and is capable of moving back and forth between the third location and the second location.

4 . The detection device according to claim 3 , wherein the first OCV detection apparatus includes a bracket and a plurality of first test probe mechanisms slidably connected to the bracket along a first direction.

5 . The detection device according to claim 3 , wherein the transit apparatus includes a first linear module, a second linear module slidably connected to the first linear module, and a claw mechanism disposed on the second linear module, one end of the first linear module extends to the second location and the other end extends to the third location, the second linear module moves back and forth relative to the first linear module along a first direction, the claw mechanism moves back and forth relative to the second linear module along a second direction, and the first direction is perpendicular to the second direction.

6 . The detection device according to claim 5 , wherein the second OCV detection apparatus comprises a second test probe mechanism, and the second test probe mechanism is disposed on the second linear module.

7 . The detection device according to claim 3 , wherein the detection device further comprises an information collection mechanism, and the information collection mechanism is disposed on the transit apparatus and is capable of moving back and forth between the third location and the second location.

8 . The detection device according to claim 3 , wherein a storage box and a tray mechanism for supporting the storage box are provided at the third location, and a plurality of storage cells are formed inside the storage box.

9 . The detection device according to claim 8 , wherein the tray mechanism comprises at least two tray bodies arranged in a stacked manner and a sliding rail structure provided between any two adjacent tray bodies, wherein one of the tray bodies may slide relative to the other tray body along a guide direction of the sliding rail structure.

10 . The detection device according to claim 9 , wherein the sliding rail structure comprises a guide rail provided on one of the tray bodies and a slider provided on the other tray body, and the slider is slidably connected to the guide rail.

11 . An open circuit voltage (OCV) detection method, comprising:
performing OCV detection, via a transmission line, on one or more to-be-detected battery materials at a first location to obtain a detection result, and in response to the detection result not satisfying a first condition, transporting the one or more to-be-detected battery materials to a second location, and the detection result comprises a voltage drop per unit time of each of the one or more to-be-detected battery materials; performing OCV detection, via the transmission line, on one or more transferred battery materials at a third location to obtain a voltage drop per unit time of the one or more transferred battery materials; performing primary battery replacement, including transferring one of the one or more to-be-detected battery materials whose voltage drop per unit time does not meet a criteria to the third location, and transferring one of the one or more transferred battery materials whose voltage drop per unit time meets the criteria to the second location for replacement; collecting, via a collection mechanism, information of the one or more to-be-detected battery materials at the second location; collecting, via the collection mechanism, information of the one or more transferred battery materials at the third location; and performing secondary battery replacement, including transferring one of the one or more to-be-detected battery materials whose information does not satisfy a second condition to the third location, and transferring one of the one or more transferred battery materials whose information satisfies the second condition to the second location for replacement.

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Cao Wei
• Wei Wenchao
• Chen Wentao

Classifications

• G01R31/3644 Primary

  Constructional arrangements · CPC title

• H01M10/0404

  Machines for assembling batteries · CPC title

• G01R31/3865 Primary

  related to manufacture, e.g. testing after manufacture · CPC title