As electric vehicles (EVs) gain momentum worldwide, the systems behind them are evolving rapidly. One of the most critical components in a Battery Electric Vehicle (BEV) is the Battery Management System (BMS)—a system responsible for monitoring and controlling the battery's voltage, current, and health. Unlike traditional gasoline-powered cars, EVs require BMS and CMS (Cell Management System) to ensure safe operation and extend battery life.
Tohoku Solutions, a subsidiary of SVI, brings over 30 years of automotive electronics experience and 2 years of dedicated BMS manufacturing. We currently produce BMS for a Chinese EV brand, with production for a European automaker starting in August and discussions underway with U.S. customers. Here’s how Tohoku turns BMS concepts into complete, road-ready solutions.
Our journey begins with close collaboration during the early design stage. By partnering with customers at the concept level, we help ensure:
Our design for manufacturing (DFM) expertise, especially in automotive-grade electronics, reduces risk and accelerates time-to-market.
In addition to SMT and PCBA processes, we support BMS with custom die molds, metal and plastic component manufacturing, and in-house wire harness production. This enables tight control over part quality and compatibility from the ground up.
Tohoku applies automotive manufacturing principles to every BMS project:
We handle complex, multilayer PCBs that incorporate microcontrollers, cell monitoring ICs, current sensors, and communication interfaces—all with high-density layouts.
BMS requires more than visual and AOI checks. Tohoku invests in custom functional testers, including:
Our test systems simulate real-world operating conditions to validate each board’s intelligence and safety logic.
Tohoku doesn’t just assemble—we design and produce plastic enclosures, metal components, and customized connectors. By managing the entire value chain, we ensure all parts are built to spec, tested, and seamlessly integrated.
Beyond the board, we provide complete system integration:
This level of vertical integration reduces handoffs and improves quality control—especially important in automotive applications where failure is not an option.
Before shipping, every BMS unit undergoes burn-in, end-of-line testing, and compliance documentation based on customer specifications.
As part of the SVI global network, we also offer:
✅ Proven track record in automotive EMS since 1990s
✅ In-house testing and box-build capabilities
✅ Full compliance with functional safety and traceability standards
✅ Seamless integration into global supply chains through SVI
✅ Currently producing BMS for EV brands in China and expanding to Europe and the U.S.
✅ Vertically integrated: from mold design and injection to wire harness and final test
✅ Trusted by global OEMs for quality, reliability, and scalability in BMS production
From concept to car, Tohoku Solutions delivers peace of mind through complete BMS manufacturing—from board to box, plastic to PCBA, and prototype to production. Backed by decades of experience and trusted by today’s EV innovators, we’re proud to support the future of mobility.
Partner with a manufacturer who understands the demands of EV innovation from the inside out.
Contact us today to discuss how Tohoku Solutions can support your next-generation battery system.