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An electric bike battery pack involves much more than combining cells to achieve a target voltage and capacity. 

Vehicle communication, protection circuit configuration, assembly quality,

certification, and a manufacturing environment capable of maintaining consistent quality are all essential to delivering a finished product.

AlphaCell International supported an electric bike battery pack project from initial cell selection through prototype development, validation, production preparation, and final delivery. 

This article outlines the key stages of the project and the support provided at each stage.

## Project Scope

- Application: Electric Bike

- Cell / Pack Configuration: Pouch-type lithium-ion cells, 7S2P

## Initial Review: Cell Selection and Pack Configuration Based on Requirements

The project began with a review of the vehicle's required voltage, capacity, output conditions, and available battery installation space.

Electric bikes experience varying electrical loads depending on riding conditions, while the battery must also fit within the limited space available in the vehicle frame. 

Based on these requirements, AlphaCell selected pouch-type cells and designed the battery pack using a 7S2P configuration.

Pouch-type cells offer flexibility in form factor, making them suitable for applications with limited installation space. 

However, their relatively thin outer packaging also requires appropriate structural design to secure and protect the cells. 

The cell selection and pack configuration established at this stage affect subsequent BMS settings,

component selection, and manufacturing processes, making the initial review a critical foundation for the entire project.

## Phase 1 · Prototype: Developing a Battery Pack for Vehicle Integration

Based on the initial design, the prototype battery pack was assembled and a Battery Management System (BMS) was integrated.

The BMS protects the battery against overcharge, over-discharge, overcurrent, and abnormal temperature conditions, while also managing cell voltage balancing. 

In an electric bike, the battery must additionally communicate status information with the vehicle controller through CAN communication to operate as part of the vehicle system.

AlphaCell supported BMS and vehicle CAN communication integration and reviewed the related requirements to ensure the battery pack could be integrated into the vehicle system.

## Phase 2 · Validation: Performance Verification and Certification Support

Based on the findings from the prototype stage, the battery pack's performance and protection functions were reviewed and validated.

The review included checking whether charging and discharging performance met the required specifications under actual operating conditions, 

as well as whether the BMS protection functions operated appropriately under abnormal conditions. 

Any necessary adjustments were discussed with the customer and reflected in the design and development process.

AlphaCell also reviewed the applicable battery pack certification requirements and, in consultation with the customer, supported the necessary testing and certification process.

## Phase 3 · Production Preparation and Delivery: Manufacturing Setup and Final Delivery

Following validation, preparations were made to establish a manufacturing environment capable of producing the battery pack consistently and maintaining product quality.

Battery pack production requires suitable assembly jigs, production equipment, and inspection processes to verify product quality before shipment.

In coordination with the customer and production facility, AlphaCell supported the setup of the necessary production equipment, jigs, and inspection systems.

AlphaCell also reviewed process inspection items and quality management procedures.

Following production preparation, the finished battery packs were delivered according to the customer's requested schedule.

## Coordinating Development and Production Preparation Is Essential

A common challenge in battery pack projects is that prototypes may be completed while preparations for manufacturing processes, 

equipment, and certification fall behind during the transition to production.

In this project, vehicle integration, certification requirements, and manufacturing conditions were considered from the initial review stage. 

Development and production preparation proceeded in parallel, helping reduce gaps between project stages and ultimately enabling the project to progress through to final delivery.

Battery pack projects also involve multiple partners, including cell manufacturers, BMS suppliers, production facilities, and testing and certification organizations.

Coordinating technical requirements and schedules across these parties is therefore essential. 

AlphaCell managed the overall project by organizing customer requirements and facilitating discussions among the customer and partner companies,

helping ensure that activities at each stage progressed in alignment with the project schedule.

## Mobility Battery Pack Solutions: From Initial Review to Final Delivery

Mobility battery pack development requires technical understanding and project experience across multiple stages, 

including cell selection, pack design, BMS and vehicle communication integration, safety reviews, and manufacturing preparation.

AlphaCell International supports battery pack projects from cell selection and pack design through BMS and communication integration, 

certification support, production equipment setup coordination, partner coordination, and final product delivery.

If you are planning to develop a battery pack for a mobility application or preparing to move an existing product toward production,

please share your required voltage and capacity, operating environment, and available installation space. 

We welcome the opportunity to discuss your project from the initial review stage.

For inquiries, please contact us through Contact Us or at support@alphacell.co.kr.

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