Product Overview

PCS PCBA is the core control and power board of energy storage systems, enabling bidirectional AC-DC conversion, battery charge/discharge management, grid interaction and multi-layer safety protection, with seamless communication between BMS and EMS. BQC delivers customized JDSM/OEM PCS PCBA solutions for residential, C&I, marine and grid-scale energy storage. All boards adopt high-reliability power design, EMC & high-voltage safety optimization, and complete automated aging testing for stable operation under wide temperature and heavy load conditions.

BQC500KB

Core Functions

Core SpecificationsElectrical Performance Power range: 3kW–2MW single/three-phase bidirectional PCS boards DC input: 48V–1500V; AC output: 220/230V single-phase, 380/400V three-phase Peak conversion efficiency: 99.2% Interfaces: CAN2.0, RS485, Modbus TCP, Ethernet for cloud & battery linkage Full protections: overvoltage, overcurrent, short circuit, over-temperature, anti-islanding, three-phase imbalance.

Hardware & Manufacturing

Main control chips: ST/NXP/Microchip industrial MCUs; power ICs from ADI/TI/NXP with domestic P2P alternatives PCB: High Tg thick copper FR-4; conformal coating optional for humid/salt spray environments Working temp: -40℃ ~ +75℃ Process: Full SMT/THT production, SPI/AOI/3D X-Ray inspection, self-developed automated FCT test fixtures Traceability: MES QR code full tracking of all production and test data Compliance: ISO9001, ISO14001, IATF16949, ISO13485, IEC62619 & UL energy storage standards

Key Functions

Real-time BMS coordination to limit charge/discharge power and protect batteries

Dual grid-tied & off-grid working modes

Active harmonic filtering and reactive power compensation

Cloud remote monitoring, fault alarm and remote firmware upgrade

Modular design for parallel multi-cabinet energy storage expansion

Application Scenarios

Residential Energy Storage: PV home storage all-in-one machines, portable outdoor power stations

C&I Energy Storage: Container energy storage, factory peak-valley arbitrage, data center backup power

Marine BESS: Vessel energy storage PCBA with anti-salt spray coating for offshore microgrids

Grid-Scale Storage: Large energy storage power stations for frequency regulation and new energy consumption

Special Storage: Optical-storage-charging integrated equipment, EV charger backup systems

Company Profile

Founded in Shenzhen (July 2003), BQC launched its Penang, Malaysia factory in 2024.

Scale: Shenzhen plant (20,000㎡, 900 staff); Malaysia plant (6,000㎡, 100 staff)

Performance: 2025 revenue USD 136.4M; annual BMS output over 50GWh by end-2025

Core business: Energy storage PCS/BMS PCBA, PV inverter, robot, medical & automotive electronics

Client advantages: Serves 3 out of global Top10 BESS integrators and 3 out of Top5 marine storage integrators; long-term partners with EVE, CALB, TBEA, Nidec etc.

R&D & Supply Chain: Complete HW/SW/NPI engineering team; privileged chip allocation from ST/TI/ADI/NXP; domestic alternative ICs cut cost by 30% with 6–8 weeks lead time

Production capacity: 24 SMT lines in Shenzhen, self-developed automated BMS/PCS testing equipment, full set of reliability test chambers

Values: Integrity, Sharing, Sustainable Contribution, Customer-first

FAQ

Q1: Can you customize PCS PCBA based on our technical specs?

A1: Yes. We provide full JDSM joint design service, including schematic, PCB layout, component selection and DFM report to deliver tailor-made boards matching your power, communication and protection requirements.

Q2: What are sample and mass production lead times & MOQ?

A2: Small MOQ prototype samples supported; sample lead time 7–12 working days, mass production 15–30 days. Mass stock of mainstream MCUs and power ICs shortens delivery cycles.

Q3: How do you solve chip shortage and long lead time issues?

A3: We have stable authorized supply from international chip vendors and mature domestic P2P replacement ICs, with 30% lower cost and stable 6–8 weeks supply cycle.

Q4: What reliability tests are conducted before delivery?

A4: All boards pass automated FCT testing for voltage, current, communication and protection functions. Optional high-low temperature cycling, vibration and salt spray aging tests are available for outdoor/marine products. All test data is stored in MES for full traceability.

Major equipment