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October, 2024
The Growing Demand for Testing in the World of Electric Mobility
By Walter Gueli, Division Manager, Seica S.p.A.
only battery ultrasonic or laser bonding tests but also all related modules and systems, such as the battery management system (BMS), onboard charger (OBC), inverter, and the electric motor itself. One of the main drivers of growth in this
T
industry is the adoption of higher-capacity bat- teries. Currently, there are three main types: lithium-ion, lead-acid, and nickel-metal hydride. Lithium-ion batteries are still leading the market due to their high performance, greater power output, and lightweight, but other materials are on the horizon.
EVs and Batteries Battery packs are made up of numerous
individual cells. Cells are the fundamental building blocks. Each one stores chemical energy and comes in cylindrical, pouch, or prismatic shapes. Cells, and therefore batter- ies, come in various chemistries, with lithi- um-ion being the most common. Each cell can output between one and six volts. Cells are connected using current collector plates to create battery modules. A module consists of several cells linked in series or parallel, forming a unit that generates the needed
Battery cells arranged into a module.
age, current, and temperature, featuring a safety system to shut the battery down if spe- cific safety thresholds are exceeded. Under BMS supervision, the switching system can disconnect the main battery from the vehi- cle’s high-voltage bus, ensuring constant communication among the onboard compo- nents.
The battery thermal management sys-
esting solutions for the electric vehicle market, whether for land, sea, air, or space applications, need to address not
voltage and energy capacity. These modules are then put together to
form the complete battery pack. The pack can include additional components like the BMS, which handles monitoring and thermal management. The BMS protects the cells by keeping track of key parameters such as volt-
tem (BTMS) manages the battery’s thermal energy and temperature, heating or cooling it as needed. Thermal interface materials (TIM) are used between battery components to bond them, even out temperatures, while assisting the BTMS in thermal management.
ACIR Testing To ensure a high-quality battery pack,
all cells must undergo a strict process to measure their internal resistance (IR). Making a battery pack from cells with differ- ent IR values, would lead to uneven current flow and temperature variations within the pack, which could be extremely dangerous and must be avoided. Following the electric vehicle industry
standards, Seica has developed a specialized platform for testing individual cells. With the Mini 80 and Mini 200 systems, Seica offers both manual and automated solutions for ACIR testing. The Mini 80 can be integrated directly into an automation line, while the Mini 200 is designed for manual testing of individual cells in their shipping boxes.
Battery Testing The electrical connections between bat-
tery cells are critical for both the performance and safety of the battery, making connection
Continued on next page Apollo Seiko to
Highlight Robotic Soldering
BRIDGMAN, MI — Apollo Seiko is showcasing the J-CAT 340 LYRA robotic soldering system at SMTA International 2024. With its advanced tempera-
BOOTH B2-138 AT THE MESSE MUNCHEN Contact us to schedule a meeting
ture setting capabilities, the J- CAT LYRA allows for precise con- trol of iron tip temperature, enabling high-quality soldering of components with varying heat capacities. This results in reliable filling of through-holes and flaw- less back fillets, ensuring optimal performance and reliability. The J-CAT LYRA features
an approach function, which facilitates additional axis move- ment during soldering. This innovative feature streamlines programming and setup, making point teaching faster and more efficient while also reducing ini- tial setup time. In addition, the J-CAT
sales@rubadue.com • 970.351.6100
www.Rubadue.com
See at electronica, Hall B2, Booth 138
LYRA offers the option for dual iron units and feeders, further enhancing its versatility and pro- ductivity. The high-powered con- troller can operate two feeder units simultaneously, reducing cycle time by up to 50%. More -
J-CAT 340 LYRA robotic soldering system.
with unparalleled flexibility and efficiency.
Contact: Apollo Seiko, 3969 W Lemon Creek Road,
Bridgman, MI 49106 % 269-465-3400 E-mail:
stacey@apolloseiko.com Web:
www.apolloseiko.com
See at SMTAI, Booth 2872
over, the ability to utilize two iron units is advantageous for soldering high heat capacity components, providing users
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