Nanocrystalline Cores

• Common Problems with Onboard Chargers (OBCs) in Electric Vehicles and How Nanocrystalline Cores Solve Them

  

  Aug 25, 2025

  Introduction to Onboard Chargers (OBCs) and Their Role in Electric Vehicles Onboard Chargers (OBCs) are a critical part of electric vehicles (EVs), converting AC electricity from the grid into the DC power needed to charge the vehicle's high-voltage battery. As EV demand grows, the need for faster and more efficient charging has increased, which brings new challenges to OBC designs. These challenges are primarily related to heat management and electromagnetic interference (EMI), both of which can severely impact the performance and lifespan of OBCs. This article discusses the common problems associated with OBCs and how nanocrystalline cores provide an effective solution. The Key Problems in OBCs: Heat and Electromagnetic Interference Overheating and Performance Degradation A major concern for OBCs is heat, which results from the energy losses that occur during power conversion. Excessive heat can cause components to degrade faster and force the system to throttle its performance to avoid damage. This can reduce the overall efficiency of the vehicle's charging system and lead to increased failure rates in the power electronics. For instance, when operating at maximum capacity, OBCs can experience failure rates that are 40% higher than at normal operating levels, primarily due to overheating. Electromagnetic Interference (EMI) High-speed switching, a characteristic feature of OBCs, generates EMI. This interference can disrupt the vehicle's other sensitive electronic systems, such as communication buses and infotainment units, leading to potential malfunctions. Modern power semiconductors, like GaN (Gallium Nitride) and SiC (Silicon Carbide), operate at high frequencies, generating electromagnetic noise in the 2.4 GHz and 5 GHz bands, which requires highly efficient filtering solutions.   How Nanocrystalline Cores Solve the Heat and EMI Issues Reducing Heat Generation: The Role of Nanocrystalline Cores Nanocrystalline cores have an exceptional ability to reduce core losses, which are responsible for generating heat. Their grain structure, which is much smaller than conventional magnetic materials, results in significantly lower core losses, reducing heat generation by up to 1000 times compared to traditional materials. This reduction in heat allows OBCs to operate at higher power levels without the need for bulky cooling systems, which leads to a more compact and efficient design. Suppressing Electromagnetic Interference (EMI) Nanocrystalline cores excel in EMI suppression due to their high permeability. This allows them to absorb high-frequency noise over a broad range of frequencies, making them ideal for use in common-mode chokes (CMCs) designed to filter out EMI. By improving noise suppression, nanocrystalline cores ensure that the OBC can meet stringent EMC standards and maintain the integrity of the vehicle's electronic systems.   Nanocrystalline Cores vs. Traditional Ferrite Cores: A Comparative Analysis Parameter Nanocrystalline Cores Ferrite Cores Saturation Flux (Bs) 1.2T 0.4T Max Operating Frequency ≥1 MHz <200 kHz Curie Temperature ∼570°C ∼120°C DC Bias Performance >80%@100 Oe 20%@100 Oe Size/Weight 50% weight, 75% size reduction No significant reduction Cost Lower system-level cost Higher due to additional cooling components     The Future of OBC Design with Nanocrystalline Cores Nanocrystalline cores are poised to revolutionize the design of onboard chargers for electric vehicles. By addressing the critical challenges of overheating and EMI, they enable the development of more efficient, compact, and reliable OBCs. This innovation is key to advancing EV technology and supporting the growing demand for faster, more efficient charging solutions.

  Hot Tags : Nanocrystalline Cores EV Technology Onboard Chargers Electric Vehicle Charging Electromagnetic Interference Overheating in OBCs

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• “Too Expensive” Rarely Means “No Budget” — It’s Usually About Risk in B2B Technical Sales

  

  Jul 18, 2025

  In B2B technical sales, price objections often hide a deeper concern: performance risk. Learn how to turn uncertainty into confidence with engineering validation — and close high-value deals without discounts.   Why “Too Expensive” Often Means “Too Risky” In B2B technical sales, hearing “the price is too high” is common. But more often than not, the objection isn’t really about budget — it’s about risk perception. Customers dealing with high-stakes products — such as nanocrystalline cores, inverters, or EV components — need proof, not just a price tag. When performance is uncertain, even a competitive quote won’t secure the deal.   Case Study: Selling Nanocrystalline Cores to a Korean Inverter Manufacturer One of our prospects — a Korean inverter company — praised our nanocrystalline magnetic cores for their excellent technical performance. But their initial feedback was: “We love the performance. But the price is too high.” Rather than offer a cheaper product, we asked a strategic question: “Is the concern really cost — or whether the product’s performance will justify the investment?”   Root Cause: Uncertainty in Thermal Performance The client's engineering team admitted their real concern: they were unsure if our product would meet their thermal threshold in real-world use. This was a classic case of risk-based decision making.   Our Solution: Performance Validation Through Data Instead of discounting, we delivered engineering confidence: Thermal test reports showing performance under load; Fatigue testing data from an existing EV client; A pilot batch for in-system validation and custom testing. By addressing the root concern, we enabled the client to move forward without hesitation.   Result: Purchase Order Without Price Reduction 3 months later, we received the purchase order. What changed? Not our price — but the customer’s confidence in our solution. They needed clarity, not concessions.   Key Takeaway: Sell Confidence, Not Just Products In the world of EV components, inverter cores, and power electronics, your customers are not just evaluating your materials — they’re assessing whether they can trust your product in their mission-critical systems. The smartest way to overcome objections is to: Understand the real source of hesitation; Offer concrete, technical proof; Replace doubt with data. Dongguan JH Amorphous design and export nanocrystalline and amorphous magnetic cores to manufacturers in the EV, inverter, and transformer industries worldwide.Let’s engineer better performance — together.    

  Hot Tags : EV and inverter core suppliers Nanocrystalline Cores nanocrystalline and amorphous magnetic cores amorphous magnetic cores nanocrystalline magnetic cores

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