CINEVE | Auto Technicians “Decoding” Batteries — Live Reveals New Energy Vehicle Repair Secrets

On May 15, YASN New Energy and Jiuyun Training Center concluded their first live broadcast on “New Energy Vehicle Battery Pack Repair” in a powerful finale! This wasn’t a theory class you’d forget after listening—this was real skills that technicians can apply at their workstations tomorrow.

• Understand: Every parameter on a battery nameplate is more than just a number.

• Disassemble: See inside the battery pack, layer by layer.

• Diagnose: Learn a practical methodology to determine module structures accurately.

• Repair: Hands-on battery balancing, guiding you step by step.

The live session focused on one core topic: “New Energy Vehicle Battery Balancing.” We know that in the era of new energy vehicles, what technicians lack isn’t passion—it’s skills that can be immediately applied. This broadcast cut the fluff and delivered the full chain from nameplate knowledge to hands-on practice, tailored specifically for the NEV repair industry.

This first session is just the beginning. Stay tuned for the next chapter in new energy vehicle repair!

Live Demonstration

This year, YASN New Energy will focus on “the hardest-to-repair new energy vehicles”, partnering with 100 repair training centers to create a platform that directly addresses industry pain points and connects resources for manufacturers of core NEV powertrain components, diagnostic and testing equipment providers, and automotive repair training service providers—co-creating value together.

1. Battery Pack Nameplate Interpretation:

The instructor emphasized that understanding the battery pack nameplate is the first step in NEV repair, focusing on two key pieces of information: battery capacity and series configuration.

1.1 Battery Capacity Calculation

Rated Voltage×Rated Capacity÷1000=Battery Capacity (kWh) 

1.2 Battery Pack Series Calculation (essential for fault diagnosis)

The total voltage is the sum of all single cells in series, similar to a 12V lead-acid battery in fuel vehicles (6 × 2V cells in series). 

Calculation: Total Voltage÷Single Cell Rated Voltage=Number of Series Cells, choose the value that gives an integer result as the series count.

Live Demonstration

2. Battery Pack Internal Structure Analysis 

A battery pack is mainly composed of six key sections. In this live session, the six core components were explained: 

2.1 Cells: The most numerous basic units inside the battery pack; the actual energy-storing “battery bodies.” 

2.2 Modules: Groups of cells connected in series and parallel form a module. For example, the pack dissected in this session had six modules, which helps quickly locate faulty cells. 

2.3 BMS (Battery Management System): Known as the battery’s “computer board,” divided into master and slave controllers, serving as the core of battery management. 

2.4 BDU System: The battery pack’s power distribution unit. 

2.5 Thermal Management System: The battery pack’s “temperature guardian,” maintaining cells at optimal operating temperatures. 

2.6 Casing: The “protective shell” of the battery pack, made of high-strength, corrosion-resistant materials. It secures all internal components—including cells, modules, and thermal management systems—and provides waterproof, dustproof, and impact protection, shielding components from external hazards and mitigating safety risks from battery faults.

Additionally, the session shared the three most common types of cells/modules in the automotive industry: Prismatic Cell Modules, Cylindrical Cell Modules and Pouch Cell Modules

3. Practical Operation of NEV Battery Balancing

• 3.1 Step-by-Step LFP Battery Balancing: The session provided a complete walkthrough of balancing 6-series prismatic LFP modules, detailing the entire disassembly and operation process.

• 3.2 Core Logic and Types of Balancing: Explained the underlying principles of battery balancing and the differences among the three most common balancing methods.

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• High-precision multimeters, insulation testers, and professional decoders were highlighted as indispensable tools for daily repair work.

Finally, the session addressed questions on the differences in tools between NEV and conventional vehicle repairs in detail. It also included live demonstrations of the three essential NEV repair tools, providing step-by-step guidance on how to use them.

YASN New Energy: Driving Standardization and Professional Development in NEV Repair

YASN New Energy remains committed to its mission of “addressing pain points, solving problems, and empowering the industry.” This year, we are centering on “the hardest-to-repair new energy vehicles” to tackle real pain points for both B2B and B2C markets.

We are collaborating with NEV repair training centers across all provinces in China, as well as engaging with repair institutions in the Philippines, Finland, Brazil, and other international markets. Our focus goes beyond training—we are building a complete ecosystem that connects four core roles:

• Repair shops

• Training institutions

• Component manufacturers

• Tool producers

This approach ensures technology meets real-world scenarios, resources meet demand, and no part of the chain remains isolated.

YASN New Energy moves in sync with the industry and alongside the future. Next year, we will launch the nation’s largest NEV repair ecosystem exhibition, featuring more hands-on repair live sessions, high-quality tools, premium components, and extensive resource connections.