Based on the RapidECU all-domain electronic control development platform, this solution addresses industry pain points such as inaccurate traction battery voltage/current/temperature acquisition, large SOC/SOH estimation errors, inefficient balancing control, difficult high-voltage safety management and poor cell consistency, delivering an integrated Battery Management System (BMS) solution. The solution adopts a distributed architecture of a main-control BMU plus acquisition CSCs, covering the full workflow of cell monitoring, high-voltage insulation detection, charge/discharge power limiting, fault protection and thermal-linkage control. Paired with a full set of proprietary tools — ECUCoder automatic code generation, MeCa calibration software and the SimCar battery-dedicated HIL bench — it supports the AUTOSAR standard and ISO 26262 functional safety, adapts to various battery packs including LFP, NMC and hydrogen energy storage, and covers passenger vehicles, commercial vehicles, construction machinery and energy storage equipment. One hardware platform serves both prototyping and mass production, effectively shortening development cycles and improving battery service life and vehicle high-voltage safety.