Congratulations On Your Successful Submission
Submission Failure
Designed for dual-directional tool chargers, converters, portable power stations, e-bikes, robotic lawn mowers, and vacuum cleaners, this solution is ideal for consumer electronics, smart home devices, and electric mobility applications—delivering efficient and reliable bidirectional charging for a seamless power experience.
Overview
This solution is a versatile bidirectional buck-boost battery charging controller designed for 1 to 14-cell batteries. It supports a wide input voltage range from 4.2V to 70V and an output voltage up to 70V, meeting the needs of various battery configurations. With bidirectional power transfer capability, it dynamically adjusts voltage and current to seamlessly switch between charging and discharging modes, enabling efficient power management and supporting fast charging up to 140W. This controller is particularly suited for applications requiring energy recovery and bidirectional power transfer, such as electric scooters, e-bikes, rechargeable power tools, garden equipment, robotic lawnmowers, portable power stations, cordless vacuum cleaners, robotic vacuums, solar chargers, and USB-PD EPR (Extended Power Range) systems.
This solution ensures efficient and reliable power transfer while supporting renewable energy integration, particularly suited for bridging solar, wind, and other storage technologies with traditional power systems. This capability enhances sustainability and operational efficiency across power infrastructures.
Example:
This 36V DC 10-cell lithium battery with Type-C connectivity supports fast charging up to 140W, offering flexible power outputs at 5V, 9V, 15V, 20V, and 28V (up to 5A). Equipped with E-Marker for 100W/140W charging and capable of 65W max without E-Marker, it indicates charging status with a red light (flashing when charging, solid when full) and a blue light for discharge. Built on a durable 1.6mm FR-4 board with compact dimensions of 70x38x15mm, this battery is compatible with QC2, QC3, Apple, SCP, FCP, and AFC protocols.
Introduction
Supports input and output voltages from 4.2V to 70V, accommodating a variety of battery configurations and device requirements.
Provides a maximum charging current of 10A to meet high-power needs for fast and efficient charging.
Enables bidirectional energy flow between device and power source, allowing flexible switching between charging and discharging modes for optimized power management.
Supports the PD3.1 protocol extension and is compatible with USB-PD EPR, enabling rapid charging for high-power devices.
Features an efficient energy management design that reduces energy consumption during charging and discharging processes, extending device runtime.
Incorporates the latest PD3.1 protocol, supporting power delivery up to 240W. Diagrams can illustrate the bidirectional charging process and demonstrate how power transmission has expanded from the traditional 100W to 240W.
Designed for charging management of 1 to 14-cell batteries, showcasing multi-level buck-boost regulation to ensure safe and efficient charging across different battery configurations.
Diagrams can explain the intelligent switching between charging and discharging modes, enabling smarter power management.
Cases
Home Appliances: Cordless Vacuum Cleaners and Robotic Vacuums
For home appliances like cordless vacuum cleaners and robotic vacuums, which rely on battery power, fast and efficient charging is essential. This solution utilizes a bidirectional buck-boost charging controller with a wide 4.2V to 70V input range, offering smart bidirectional power management. The controller adjusts the current based on the device’s battery needs, allowing for rapid charging and automatically switching to a low-power mode once fully charged to prevent overcharging and extend battery life. Its broad input voltage range also supports various battery configurations, ensuring reliable, efficient power for household devices.
In-Vehicle/Outdoor Devices: Electric Scooters and E-Bikes
Outdoor and in-vehicle devices, such as electric scooters and e-bikes, often use high-capacity lithium batteries, requiring both high power support and energy efficiency during discharge. This solution features bidirectional functionality, intelligently switching between charging and discharging modes. Using built-in buck-boost circuitry, it regulates the input voltage to match the battery requirements during charging, and boosts the battery voltage during discharge to power the device. This design provides a stable output even when the battery is low, improving vehicle range and reliability for longer trips.
Mobile Devices: Portable Power Stations and Solar Chargers
Portable power stations and solar chargers are common in outdoor settings, requiring stable power output for extended use. With a wide input/output voltage range (4.2V - 70V) and bidirectional power management, this solution allows the power station to both store energy and provide power to other devices. The boost function efficiently converts solar energy input into stored battery power, while the buck design ensures an output voltage suitable for outdoor devices. This flexible voltage regulation and bidirectional capability meet a variety of outdoor power needs, offering a practical off-grid power solution.
High-Power Electric Tools: Rechargeable Power Tools and Gardening Equipment
High-power electric tools and gardening equipment require fast, high-current charging to support demanding tasks. This solution’s circuit design incorporates up to 10A high-current charging capacity and a broad input/output voltage range, adaptable to various power tool battery configurations. Its bidirectional power controller allows smooth voltage adjustments for stable charging and discharging. Supporting USB Type-C and USB-PD EPR compatibility, it offers efficient and versatile charging, making it ideal for high-power applications that require flexible, reliable power – even in outdoor or on-site work environments.
