Ocv detection method and detection device

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.