Technical analysis and optimization of integrated stepper servo motor in battery packaging pressing

This article aims to explore the technical characteristics, common problems and solutions of integrated motor in battery packaging and pressing applications. Through in-depth analysis of customer feedback and actual application cases, targeted optimization measures are proposed to improve the application effect of motors in this field.

1. Introduction to battery packaging and pressing

Battery packaging and pressing is one of the key steps in the manufacturing process of lithium-ion batteries. This process mainly uses pressure to tightly combine components such as battery cells, positive and negative electrodes, and diaphragms to ensure the electrical connection and physical stability inside the battery. The quality of packaging and pressing directly affects the performance, safety and service life of the battery. With the rapid development of new energy vehicles and energy storage industries, higher requirements are put forward for battery packaging and pressing technology, such as high precision, high efficiency, high stability and good consistency.

2. Motor models and application scenarios

• Motor model: STM5776B-CANpen-1FH

• Main application scenarios: battery packaging and pressing

STM5776B-CANpen motor has been widely used in the field of battery packaging and pressing with its high precision, high reliability and strong communication capabilities. The motor can meet complex process requirements and ensure the consistency and quality of battery packaging.

3. Functional features and applications

• Position mode: Achieve precise positioning to ensure accurate alignment of components during the pressing process.

• Torque mode: Provide stable torque output to meet the pressing requirements under different materials and process conditions.

During the battery packaging pressing process, the STM5776B-CANpen motor effectively improves the packaging efficiency and product quality by precisely controlling the position and torque.

4. Customer feedback issues and solutions

• Problem 1: Easy to shake and overcurrent after pressing in place in torque mode

Problem description: In torque control mode, the motor occasionally shakes after pressing in place, accompanied by an overcurrent alarm.

Solution: After analysis, it was found that the jitter and overcurrent were caused by the motor's excessive speed at the moment of arrival and the large reverse force. By limiting the torque control speed limit value, the jitter and overcurrent problems were effectively solved. The adjusted motor runs more smoothly, improving the pressing accuracy and stability.

5. Technical Optimization Suggestions

1. Enhance communication stability:

In CANpen communication, ensure that the bus layout is reasonable to avoid signal attenuation and reflection caused by too long branches. Follow the IS11898-1/2 standard and formulate appropriate branch length specifications to improve communication reliability and stability.

2. Optimize control algorithm:

Further optimize the motor control algorithm in view of the specific process requirements of battery packaging pressing. Improve the response speed and stability of the motor by adjusting PID parameters and adding anti-jitter filtering and other functions.

3. Strengthen heat dissipation design:

Consider strengthening heat dissipation measures in motor design, such as adding heat sinks and optimizing air ducts. Ensure that the motor can maintain stable performance output under high load and long-term operation conditions.

6. Conclusion

The integrated motor(STM5776B-CANpen motor) has shown excellent performance and broad application prospects in battery packaging pressing applications. Through in-depth analysis of customer feedback issues and actual application cases, we have put forward targeted solutions and technical optimization suggestions. In the future, we will continue to pay attention to the development trend and technical needs of motors in the field of battery packaging pressing, and provide customers with better quality and more efficient products and services.