ENG-01 · Energy & Power
Intelligent Wireless Battery Management System PCBA
A representative engineering architecture for pack-level safety supervision, battery-state estimation, fault diagnostics, data logging, and wireless cell-monitor communication.
Project context
How this product is typically engineered
A representative engineering architecture for pack-level safety supervision, battery-state estimation, fault diagnostics, data logging, and wireless cell-monitor communication.
System architecture
Typical architecture
Cell-monitoring nodes report voltage and temperature data over a wireless link to a gateway MCU, while the main control board coordinates diagnostics, logging, regulated power, and Ethernet, USB, or vehicle-network communication.
Engineering risks to resolve
Decisions to close before release
- Maintain synchronized, dependable cell data when the RF link is obstructed or congested.
- Keep SOC and SOH estimates stable across temperature, aging, and changing load profiles.
- Meet low standby-current, EMC, isolation, and fail-safe requirements in one compact controller.
Validation plan
Checks to define before production
- Calibrate voltage and temperature channels and correlate SOC and SOH estimates with laboratory cycling data.
- Exercise packet loss, node dropout, brownout, sensor disagreement, and communication-recovery scenarios.
- Complete RF coexistence, EMC and ESD, thermal, sleep-current, and environmental stress testing.
What to put in the RFQ
Files and records to agree before quoting
Use this list to agree the build inputs and release records for a similar product. The final set depends on the project.
Design baseline
Released schematic or block diagram, interface table, power states, critical constraints, and revision owner.
Manufacturing release
Gerber or ODB++, stack-up, centroid data, assembly drawings, approved DFM dispositions, and panel assumptions.
Material control
Released BOM revision, manufacturer part numbers, AVL or alternate rules, no-substitute lines, MSL handling, and exception approvals.
Validation record
Test method, acceptance criteria, sample or serial identity, measured result fields, and disposition. Example scope: Calibrate voltage and temperature channels and correlate SOC and SOH estimates with laboratory cycling data.
Production release
First-article status plus the agreed SPI, AOI, X-ray, ICT, FCT, programming, rework, OQA, labeling, and packing records.
During RFQ review, we confirm the required fields, sampling, limits, approvals, and record-retention period. Confidential project information stays within the agreed access rules.
Development and production controls
Typical manufacturing scope
- Wireless cell-data aggregation.
- Battery-state and fault supervision.
- Gateway, logging, and service interfaces.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
