Five Important Factors for making Battery Pack Molds

PUNE, India - April 22, 2025 - PRLog -- In this post, we will look at a variety of factors to consider when constructing a battery pack mold to ensure high-quality and durable components.

1. Material Selection

Material selection in battery pack mold-making entails selecting the best thermoplastic that meets the specific needs of the battery design. It covers discussions about thermal conductivity, impact resistance, and chemical compatibility with battery components.

2. Design for Venting

The venting design includes channels or vents in the mold that allow air and gas to circulate during the injection molding process. It regulates air traps, provides consistent filling of the mold cavity, and eliminates defects like as air pockets and inadequate filling, which can jeopardize the structural integrity of battery pack components.

3. Precision and Tolerance

Precision defines a level of accuracy and consistency in making components within prescribed tolerances. However, there are some considerations you should make to guarantee that each battery pack matches the exact dimensions criteria, which contributes to the overall product quality.

4. Parting Line and Ejection

In the manufacture of battery pack molds, the parting line indicates the point at which the mold halves separate. On the other side, ejection refers to systems that remove molded components from the mold.

The Best Battery Pack Assembly Line: Technical Features

1. Square Battery Assembly Line:

Core procedures: primarily winding or stacking procedures that include electrode preparation, cell encapsulation (aluminum/steel shell), top cover welding, etc. Hot press forming machines, cell insertion machines, ultrasonic welding machines, and other pieces of equipment are used.

Advantages: High compatibility, adaptability to various sizes and customizing requirements; simple structure, high energy density (for example, blade battery).

2. Cylindrical Battery Assembly Line

Core processes include fully automatic winding, supporting tab welding, liquid injection, sealing, and other equipment. A classic example is the 4680 cylindrical battery manufacturing line.

Advantages: mature process, high automation, great yield and consistency, wide heat dissipation area, and short single-cell manufacturing cycle.

3. Pouch Battery Assembly Line

Core Processes: Key equipment for stacking technology comprises tab welding machines, aluminum film punching and shell insertion machines, top and side sealing machines, and so on, all of which use high-precision linear or rotary production line layouts.

Advantages: Highest energy density (5–10% higher than square cells at the cell level), excellent safety (simple pressure relief in the event of thermal runaway), and adaptability to future solid-state battery technology pathways.

Conclusion

Are you ready to improve your battery pack production with precision and efficiency? Collaborate with OPM, where innovation meets excellence. We are now excited to serve clients all over the world. Contact us today by email at sales@opm-uk.com or call us at +91–9900299893 to learn more about custom-made solutions that will boost your battery pack production.

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