Supplier and Process Quality Audit for Lithium-Ion Cell Manufacturing: HTTP Interfaces and External Systems

Data sources for this category include raw material batch ledgers, production MES systems, slurry and coating testing equipment, workshop dew point

What the Data for This Category Looks Like

Data sources for this category include raw material batch ledgers, production MES systems, slurry and coating testing equipment, workshop dew point monitoring devices, formation and grading cabinets, and laboratory testing equipment. Daily documents cover batching records, coating and rolling parameter logs, winding/stacking operation records, liquid injection ledgers, formation and grading data, OCV and safety test reports. Data is updated in real time per batch and per individual cell. Fields include batch number, test values, equipment number, timestamp, and more. Units involve electrochemical and industrial parameters such as voltage, resistance, dew point temperature, and slurry solid content.

Constraints on HTTP Interfaces and External Systems

The real-time updates, multi-source heterogeneous nature, and specialized parameter traits of data in this category create multiple constraints for HTTP interfaces. Multi-source data comes from production equipment, laboratories, and other distinct systems. A unified Authorization parameter must be used for authentication to prevent cross-system data leaks. Single pieces of real-time synchronized data have small volume but high frequency. Interfaces must adapt to high-concurrency requests to avoid data backlogs. The original format of electrochemical specialized parameters must be fully preserved. responseData must not arbitrarily convert units or truncate fields. The audit process requires association with multi-batch documents. Interfaces must support batch queries by batch number and cell ID to ensure complete associated data.

Configuration Settings

The following configurations apply to FastGPT v4.17.0

Configuration ItemRecommended SettingRationale
AuthorizationBearer {custom secret}Adapts to the unified authentication requirements of multi-source external systems, preventing unauthorized access to production and test data
Timeout30–60 secondsAdapts to the response requirements of real-time data reporting and audit queries, preventing long-running tasks from blocking the interface queue
responseDataRetain original fields and units, no format conversionElectrochemical parameters in this category must strictly match original test values. Missing fields or conversions will affect audit accuracy
variablesBind batch number and cell ID as dynamic parametersSupports querying corresponding documents per single batch or single cell dimension, adapting to the precise positioning requirements of the audit process
Single search limitTop 10 entriesThe number of documents associated with a single batch is usually within 10, preventing redundant data from occupying interface bandwidth
Authentication cache duration15 minutesBalances authentication security and interface response speed, adapting to the authentication requirements of high-frequency equipment reporting

Three Common Misconfigurations

  • Phenomenon: Interface calls return a 504 timeout status code, or requests do not receive a response. Cause: The timeout period was not adjusted to match the high-frequency real-time data reporting characteristics of this category. The default timeout duration is too short to cover multi-source data query and splicing processes.
  • Phenomenon: Electrochemical parameter units are missing or converted in returned responseData. Cause: responseData was not configured to retain the original format. Arbitrary unit conversion or field truncation leads to distortion of test data used as audit basis.
  • Phenomenon: Database query requests only partially return data, or fail to match corresponding test records entirely. Cause: Batch number and cell ID were not bound as dynamic query parameters via variables. Fixed parameters mean the query scope does not match the batch- and per-cell updated data structure of this category. Unthrottled concurrent requests also exhaust database resources.

How to Confirm Proper Configuration

  • Call the configured interface with a known batch number. Check that responseData includes original document fields for the batch, such as batching and coating records, and that units have not been modified.
  • Initiate more than 10 concurrent requests. Confirm the interface does not throw timeouts or 500-series errors, and adjust the timeout period to fit business requirements.
  • Use the dynamic parameters bound via variables. Verify the number of documents returned matches the actual number of documents associated with the batch.
  • Check the Authorization parameter configuration. Call the interface with an unauthorized secret, and confirm a 401 unauthorized status code is returned to ensure authentication works.

The values provided are common starting points and should be evaluated against the reader's own samples.