Technology Reigns Supreme, Efficient Service
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Technology Reigns Supreme, Efficient Service
A Protection Circuit Module (PCM) — often referred to as a Battery Management System (BMS) in more sophisticated implementations — is the electronic brain embedded within every lithium battery pack. In the context of shared battery swapping networks, the PCM takes on a far more critical and multifaceted role than in a conventional single-user battery application. It must simultaneously protect the cell chemistry, manage thermal conditions, communicate with external platforms, and support rapid hot-swap operations without compromising safety or data integrity.
Shared battery swapping networks are large-scale, commercially operated ecosystems in which standardized battery packs are rented, swapped, and recharged across a distributed network of stations. Users of electric two-wheelers, delivery scooters, electric cargo bikes, or light electric vehicles simply ride to a nearby station, remove their depleted battery, and insert a fully charged one — the entire process taking under 60 seconds. The PCM within each battery pack must therefore be engineered to handle thousands of such swap cycles reliably over its operational lifespan.
Overcharge, over-discharge, short-circuit, over-temperature, and over-current protection are all managed in real time, preventing catastrophic cell failure across every swap cycle.
CAN bus, Bluetooth, and serial communication interfaces allow seamless integration with IoT platforms, enabling remote diagnostics, usage tracking, and predictive maintenance.
Integrated heating functions and NTC temperature sensing ensure the battery operates safely across extreme climates — from sub-zero winters to tropical summers.
The global shared battery swapping market has experienced explosive growth since 2019, driven by the accelerating adoption of electric two-wheelers and light electric vehicles (LEVs) across Asia, Europe, and emerging markets. According to industry analysts, the battery swapping services market is projected to exceed USD 12 billion by 2030, growing at a CAGR of over 28%. China alone accounts for the largest share, with operators like CATL's EVOGO, NIO's Power Swap, and a host of two-wheeler-focused platforms deploying tens of thousands of swapping stations nationwide.
In Southeast Asia, companies such as Gogoro (Taiwan), Gachaco (Japan), and numerous Vietnamese and Indonesian startups are rapidly expanding swap infrastructure to serve the enormous population of electric motorcycle and scooter users. In Europe, pilot programs for electric cargo bikes and last-mile delivery fleets are gaining traction in cities like Amsterdam, Paris, and Berlin.
At the industrial level, AGV (Automated Guided Vehicle) operators in warehouses and logistics centers are increasingly adopting battery swapping to maximize uptime — replacing manual plug-in charging with automated swap stations that keep fleets running around the clock. This industrial dimension places even more stringent demands on the PCM, requiring not only cell-level protection but also advanced state-of-health (SoH) reporting, cycle-count logging, and authentication protocols to prevent counterfeit or degraded packs from entering the network.
The evolution of PCM technology is being shaped by the unique operational demands of shared swapping networks. Several critical trends are defining the next generation of protection circuit modules:
Industry consortia and government bodies are pushing for standardized battery form factors and communication protocols. PCMs must support universal interfaces (CAN 2.0, SMBus, RS485) so that a single battery pack can operate across multiple network operators' stations — a key requirement for open-standard swap ecosystems.
Next-generation BMS firmware integrates machine learning algorithms for real-time State of Charge (SoC) and State of Health (SoH) estimation. This allows the network platform to dynamically route batteries with declining capacity to lower-demand applications, extending overall fleet life and reducing replacement costs.
As swap networks expand into colder climates (Northern Europe, Northeast China, high-altitude regions), PCMs with integrated active heating circuits become essential. Advanced NTC-based thermal management ensures cells remain within optimal operating temperature ranges, preventing capacity loss and lithium plating during cold-weather charging.
To prevent counterfeit batteries from infiltrating shared networks, modern PCMs incorporate encrypted identity chips and digital authentication handshake protocols. Each battery pack carries a unique cryptographic identity that the swap station verifies before accepting the pack — protecting both users and network operators.
With swap station throughput becoming a competitive differentiator, PCMs must support high-rate charging (2C–4C) without compromising cell longevity. Adaptive charging algorithms within the BMS dynamically adjust current profiles based on real-time cell temperature and impedance measurements.
Regulatory requirements and operator SLAs demand complete traceability of every battery's charge/discharge history, fault events, and maintenance records. PCMs with onboard EEPROM logging and cloud synchronization capabilities provide the audit trail needed for compliance, warranty management, and second-life battery assessment.
Understanding where and how PCMs are deployed within shared battery ecosystems reveals the true complexity of their design requirements. Below are the most significant application scenarios driving PCM innovation today:
This is the largest and most mature application segment. Platforms operating fleets of shared electric scooters and motorcycles — particularly in China, Vietnam, Indonesia, and India — require PCMs capable of handling 48V–96V battery packs with continuous discharge currents of 20A–120A. The PCM must support Bluetooth connectivity for user-facing apps (enabling battery status display, rental authentication, and fault reporting) while simultaneously communicating with the station via CAN or RS485 for network-level management. Heating functions are critical in northern deployment zones where ambient temperatures regularly fall below -10°C.
Urban logistics operators deploying electric cargo bikes and delivery scooters face intense duty cycles — multiple full discharges per day, often in demanding stop-start conditions. PCMs for this segment must provide robust short-circuit protection, accurate SoC reporting to route planning software, and high-cycle-life cell balancing to ensure consistent range across the delivery window. Integration with fleet management platforms via CAN bus allows dispatchers to monitor battery status across hundreds of vehicles in real time.
Automated Guided Vehicles in fulfillment centers and manufacturing plants operate 24/7, making charging downtime unacceptable. Battery swapping stations — often fully automated robotic systems — allow AGVs to exchange depleted packs in under 30 seconds. PCMs in this environment must meet industrial-grade reliability standards, support high-accuracy coulomb counting for precise SoC reporting, and implement rigorous authentication to ensure only certified packs enter the fleet. Communication via CAN 2.0B or SMBus to the AGV's onboard controller is standard.
Commercial drone operators — in agriculture, infrastructure inspection, and emergency response — increasingly rely on standardized battery swap systems to maintain continuous flight operations. PCMs for drone batteries must be ultra-lightweight, support high discharge rates (10C+), and provide precise cell-level monitoring to prevent in-flight failures. Bluetooth-enabled BMS boards allow ground crews to verify battery health status before each flight without physical inspection.
Municipal governments and smart city planners are integrating battery swapping kiosks into public transit hubs, parking structures, and convenience stores. These kiosks serve users of electric scooters, e-bikes, and personal mobility devices. PCMs in this context must support multi-chemistry compatibility (LFP, NMC, LTO), robust tamper detection, and real-time cloud reporting to city management platforms — enabling data-driven decisions on kiosk placement, capacity planning, and grid load balancing.
We are Shenzhen Litongwei Electronic Technology Co., Ltd., established in 2005, a national high-tech enterprise specializing in the R&D and manufacturing of lithium-ion safety control systems. Our products are widely used in 3C digital devices, electric scooters, bicycles, motorcycles, tricycles, golf carts, AGVs, drones, and power tools.
We provide intellectual property protection (patent collaboration to prevent infringement), industry-standard shared boards (cost reduction and efficiency improvement), full-process traceability (quality control), and remote maintenance (cloud platform support) to help you address technical, cost, and operational challenges.
By choosing us, you'll receive top-tier products and services. Litongwei is committed to collaborating with you to build a brighter future together.
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LITONGWEI has always adhered to the philosophy of "Technology as King, Efficient Service" in all aspects of production and operations. Our vision is to become a provider of intelligent green energy management solutions, embracing environmental sustainability.
As shared battery swapping networks become the backbone of urban electric mobility, Litongwei's PCM technology stands at the intersection of safety engineering, IoT connectivity, and sustainable energy management — enabling operators to build reliable, scalable, and future-proof battery fleets.
Start with LITONGWEI — where every protection circuit module is a commitment to safety, longevity, and intelligent energy stewardship.
Contact UsIn 2005, the company commenced R&D and manufacturing of digital Battery Management Systems (BMS). By 2006, it expanded into power battery management system development. ISO9001 certification was obtained in 2007, followed by ISO14001 certification in 2009.
The company secured 8 utility model and design patents in 2011, while expanding its mobile power bank manufacturing operations. The Litongwei Technology Research Institute was established in 2012. It received the Del New Energy Quality Excellence Award in 2014 and earned the Gold Partner title from Gaogong Lithium Battery in 2015.
The company upgraded its ISO 9001 and ISO14001 certifications in 2016, achieved IATF16949 certification in 2018, and implemented an MES system for warehouse automation. It was awarded the Guangdong Battery Industry Association Innovation Award in 2019 and recognized as a leading brand in lithium battery protection board technology for two-wheeled vehicles in 2020.
Litongwei Electronics continues to innovate, deepening its technological expertise while embracing IoT and Industry 4.0. Through its Smart Manufacturing+ strategy, the company drives industrial transformation and upgrading — positioning itself as the PCM supplier of choice for next-generation shared battery swapping networks globally.
Shenzhen has over 13,000 square meters of independent factory space, and Dongguan Huangjiang has 27,000 square meters. The company is equipped with 24 pick-and-place machines for high-speed assembly and 12 PCBA production lines, with Litongwei's monthly output reaching over 15 million units.
Litongwei's R&D investment has consistently accounted for more than 10% of company sales for five consecutive years — ensuring our PCM technology remains at the cutting edge of shared battery swapping network requirements.
The company holds over 100 patents in the lithium-ion battery protection board industry, along with multiple patents in circuit/testing programs and automation. It provides enhanced intellectual property protection for clients and collaborates with them to mitigate infringement risks.
