Automaker Battery Brands Going Into Vehicles, Not Just Competing with CATL “车企牌”电池相继上车，不只是PK宁德时代

TL;DR

• Chinese EV makers (HarmonyOS, Li Auto, Xiaomi, NIO) are launching proprietary battery brands using "penetrating management" — full control from cell chemistry to pack-level production, including involvement in supplier hiring and second/third-tier supply chain oversight
• CATL remains the dominant supplier with unmatched production consistency, but EV makers argue their BMS algorithms and vehicle-integration expertise give them an application-layer advantage that can partially offset consistency gaps
• The industry is bifurcating into two models: high-integration supply from CATL versus "车企牌" (OEM-branded) batteries where second-tier cell makers act as ODMs under strict OEM control
• EV makers are compensating for consistency gaps through intensified screening (e.g., four-stage ceramic removal vs. industry-standard two-stage, four-cycle pressure-drop testing, X-ray inspection on every cell)
• CATL's "Intel Inside" consumer-branding strategy has created significant mindshare, making it difficult for OEM-branded batteries to gain consumer trust despite potentially comparable or superior real-world reliability metrics

Why It Matters

This shift represents a fundamental restructuring of the EV supply chain, where OEMs are moving from passive buyers to active co-developers and brand owners of one of the most critical and costly components (30% of vehicle cost). For AI and tech practitioners, it illustrates how vertical integration and deep supply-chain control can serve as competitive moats in hardware-intensive industries, and how software-defined capabilities (BMS, thermal management) can compensate for manufacturing gaps.

Technical Details

• "Penetrating management" model: OEMs like Li Auto have deployed ~300 battery engineers and Xiaomi ~100+ (mostly BMS-focused), directly participating in cell development, material selection, and even core岗位 hiring at supplier factories — a departure from the traditional "black box" procurement model
• Production consistency as the key differentiator: CATL's advantage lies in statistical process control at scale; industry insiders note CATL is the only domestic cell maker where products have no grading tiers due to uniform quality. Consistency directly affects voltage differential (压差), which passive BMS均衡 cannot fully correct — only active均衡 (costing ~20,000 RMB per commercial vehicle unit) can "fill the valley"
• Enhanced screening protocols: OEM-branded batteries employ stricter defect detection — four-stage ceramic removal (vs. two), four-cycle pressure-drop testing (vs. 2-3), and 100% X-ray inspection on trial lines — to compensate for second-tier cell maker consistency gaps
• Safety standards exceeding national norms: Xiaomi's 龙甲电池 requires 500J bottom-impact resistance (vs. 150J national standard), and HarmonyOS's 巨鲸电池 mandates no explosion during thermal runaway at ~100% SOC in high-temperature environments — standards described as among the most stringent in the industry
• BMS application-layer advantage: OEMs argue their battery management systems benefit from deeper vehicle-level controller integration and driving-pattern data, potentially outperforming CATL's one-size-fits-all approach in real-world scenarios

Industry Insight

• The EV battery supply chain will likely consolidate into a two-tier structure: CATL as the premium integrated supplier for brands prioritizing brand recognition, and second-tier cell makers (Sunwoda, etc.) operating as ODMs under strict OEM control for brands pursuing differentiation — suppliers that cannot adapt to either model face marginalization
• OEMs investing heavily in battery engineering talent and supply-chain oversight are building long-term moats; the 100-300 person battery teams at Xiaomi and Li Auto represent strategic bets that could pay off as consumer trust in OEM-branded batteries grows, but require sustained capital commitment before ROI materializes
• CATL's response will be critical — the article suggests the incumbent's path forward is deeper openness and integration into OEM development workflows rather than confrontation, which could reshape the competitive dynamic from supplier-customer to co-development partnerships