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Optimizing Battery Factory Efficiency with MES Focus on Module EOL Testing

The battery manufacturing industry depends on precise processes and efficient testing to ensure the highest quality standards. One critical system that plays a significant role in achieving this is the Manufacturing Execution System (MES). MES helps organize key functions in battery factories, including cell entry inspection, Module End-of-Line (EOL) testing, and PACK package EOL testing.

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Optimizing Battery Factory Efficiency with MES Focus on Module EOL Testing

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  1. Optimizing Battery Factory Efficiency with MES: Focus on Module EOL Testing The battery manufacturing industry depends on precise processes and efficient testing to ensure the highest quality standards. One critical system that plays a significant role in achieving this is the Manufacturing Execution System (MES). MES helps organize key functions in battery factories, including cell entry inspection, Module End-of-Line (EOL) testing, and PACK package EOL testing. In this document, we will focus on the importance of Module EOL testing, a vital component of the battery manufacturing process. This testing ensures that battery modules meet required quality, performance, and safety standards. Workstation Description •Scan and Module EOL Test: The process starts by scanning a code, followed by a Module EOL test, which involves multiple parameters like module total voltage, monomer voltage, temperature, differential pressure control, internal resistance, insulation voltage resistance, and other key measurements. •Wire Harness Plug-in: The low-voltage wire harness plug-in is done manually, while other testing stages are automated. •Temperature Collection: Room temperature is collected and compared to the module's temperature data to ensure accuracy. •Insulated Voltage Test: High-voltage-resistant cables are used for the insulated voltage test, and the results are automatically uploaded to the MES system.

  2. •Product Flow: Conforming products move to the next workstation, while non- conforming ones are removed at the offline NG station. Key Parameters for Reference •Module Voltage Test: Accuracy of ±0.1mV. •DC Voltage Range for Insulation Test: 0-1000V with a testing time of 0.1-99.9s. Process Verification and Testing The Module EOL testing process is essential for verifying the accuracy and reliability of the following parameters: •Module Voltage Test •Internal Resistance •Cell Voltage Test •Open Circuit Voltage Differential Pressure •Total Positive and Shell Insulation Impedance Summary The use of MES in battery manufacturing, specifically for Module End-of-Line (EOL) testing, ensures that modules are tested for quality, performance, and safety. Accurate testing of parameters like voltage, temperature, and insulation is vital for seamless integration into industries such as electric vehicles and consumer electronics. This testing process is crucial for maintaining the efficiency and quality control needed in modern battery production.

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