Executive Summary & Key Takeaways: Here is a summary of BYD Battery R&D's latest technical disclosures on Sodium-Ion (Na-ion) and All-Solid-State Sulfide Batteries:

1. Platform Engineering & Core Hardware Breakdown

Figure 1: BYD Seal & Ocean Series Engineering — featuring Cell-to-Body (CTB) structural battery integration and 40,500 Nm/deg torsional rigidity.

1. All-Solid-State Sulfide Pilot Cells (400 Wh/kg)

• BYD has begun pilot-line validation of 60 Ah all-solid-state sulfide pouch/blade cells targeting flagship Denza and Yangwang models from 2027, followed by wider scale-up between 2028 and 2030.
• Meanwhile, 2nd-Gen LFP Blade Battery remains the primary workhorse for 90% of passenger EVs thanks to its 4,000+ cycle longevity and low cost.

2. Cold-Weather Sodium-Ion Integration

• Retains 90% capacity discharge at -20°C, making it ideal for stationary grid storage and sub-zero urban micro-EVs.

2. Technical Specifications & Architecture Comparison

Figure 2: Next-Generation Powertrain & ADAS: High-voltage SiC power electronics, DiPilot intelligent sensor suite, and LFP Blade Battery 2.0.

Below is the complete engineering and specification breakdown across the export powertrain and chassis architecture:

3. Real-World Ownership Impact, Safety & Regional Availability

From a long-term ownership perspective, the combination of Cobalt-Free LFP Blade Battery chemistry, Cell-to-Body (CTB) / Cell-to-Chassis (CTC) structural rigidity, and over-the-air (DiLink OTA) software refinement ensures strong residual values and low scheduled maintenance costs across both right-hand-drive (ANZ/UK) and European markets.