12 Layer Automotive PCBA for EV Battery Management (BMS)​​

♦ What is Automotive PCBA for EV Battery Management (BMS)??

Automotive PCBA (Printed Circuit Board Assembly) for EV Battery Management Systems (BMS)​​ refers to the specialized electronic assemblies that monitor, control, and optimize the performance, safety, and lifespan of lithium-ion (or other) battery packs in electric vehicles (EVs).

♦ Key Functions of BMS PCBA in EVs:

1. Voltage & Current Monitoring​​

• • Measures individual cell voltages (e.g., 96+ cells in a Tesla pack).
  • Tracks charge/discharge current for ​​State of Charge (SOC)​​ estimation.

​​2. Temperature Sensing & Thermal Management​​

• • Uses ​​NTC/PTC thermistors​​ to detect overheating.
  • Triggers cooling systems (liquid/air) to prevent thermal runaway.

​​3. Cell Balancing (Active/Passive)​​

• • ​​Passive Balancing:​​ Burns excess energy via resistors (cheaper, less efficient).
  • ​​Active Balancing:​​ Transfers energy between cells (higher efficiency).

​​4. Fault Protection & Safety​​

• • Prevents:
    • ​​Overcharge​​ (can cause fire)
    • ​​Over-discharge​​ (reduces battery life)
    • ​​Short circuits​​ (isolates faulty cells)

​​5. Communication & Data Logging​​

• • • ​​CAN bus / LIN bus​​ communication with the vehicle’s ECU.
    • Stores historical data for diagnostics (e.g., Tesla’s battery logs).

♦ BMS PCBA Design & Components:​

♦ Types of Automotive PCB Assemblies:

♦ DQS's PCB Assembly Capability

DQS Electronic is located in Shenzhen, focusing on PCB Layout Design, PCB Fabrication, Electronic Components Sourcing, SMT, PCB Assembly and Testing. We are a one-stop EMS electronic manufacturing company committed to providing global customers with rapid prototyping and mass production.

Our products include single, double, multi, high frequency, aluminum base, copper base, FR-4 and other high precision circuit boards.

We have over 10 years of experience in serving many domestic and foreign brand customers in a wide range of fields such as Medical, Automotive, Industrial Automation, Artificial Intelligence, Smart Home, Security, Power and Communications, etc..