Yesterday, we have explained the overall BMS solution of NXP based on the ISO26262 standard and supporting multiple network topologies. At the same time, STMicroelectronics has a power management IC for in-vehicle infotainment, audio and video multimedia playback, and integrated high-speed CAN functions. Highly accurate battery pack monitor + SmartMesh® wireless mesh network combined wireless BMS system. At present, the main development trend of battery management system, in addition to monitoring battery operating state parameters, should also have accurate estimation of battery state of charge (SOC), battery health (SOH), communication, battery fault diagnosis, battery pack equalization control, battery status Monitor functions such as human-machine interface. By communicating with the vehicle controller, BMS can achieve optimal driving and prevent over-discharge; combined with the charger can optimize charging. The battery management system is also developing in the direction of integration, low energy consumption, intelligence, and high reliability.
Microchip's Power Management Solution System Load Balancing + Lithium Battery Charge Management Highly Integrated Single Chip MCP73871In the typical battery-powered system design, the most common method is to connect the system load directly to the battery. The system load will cause the lithium-ion battery to discharge continuously, thus shortening the battery life cycle. Microchip's MCP73871 is designed to overcome these design challenges for Li-Ion battery powered applications. The MCP73871 is a compact and feature-rich single-chip solution. The device is ideal for designing small systems while also extending system uptime and battery life.
MCP73871 Typical Application
The MCP73871 device is a fully integrated linear solution for system load balancing and Li-Ion/Li-Polymer battery charge management with either AC/DC wall adapter or USB port power. In addition, it can make autonomous power selection between the input power and the battery. The device is not only physically small but requires fewer external components, making it ideal for portable applications. The MCP73871 device automatically draws power from the system load from a single-cell Li-Ion battery or input power source (AC/DC wall adapter or USB port). The MCP73871 device is fully compliant with the current consumption limits specified by the USB specification. When an AC/DC wall adapter is used to power the system, the external resistor sets a maximum current of 1A and supports a total current of up to 1.8A between the system load and the battery charge current.
The MCP73871 device uses a constant current/constant voltage (CC/CV) charging algorithm with an optional charge termination point. Four fixed constant voltage regulation options are available: 4.10V, 4.20V, 4.35V or 4.40V to accommodate emerging battery charging needs. The MCP73871 device also limits charge current based on die temperature under high power or high ambient temperature conditions. This thermal regulation optimizes charge cycle time while maintaining device reliability.
The MCP73871 device includes a low battery indicator, a power good indicator, and two charge status indicators that can be displayed using LEDs or communicated with the host microcontroller. The MCP73871 device supports an ambient temperature range of -40°C to +85°C.
In addition, the MCP73871 evaluation board developed by Microchip supports product designers to simplify product design and shorten product design time with the popular Microchip Li-Ion battery charge management controller with system load balancing.
System Power Path Management Application for MCP73871
The MCP73871 evaluation board enables solutions for system power path and load balancing management control such as Microchip's discrete linear Li-Ion battery chargers. Lithium-ion batteries can also supply system loads when the input power is disconnected.
MCP73871 Evaluation Board Implementation Features
8-bit low-cost PIC microcontroller supporting USB applicationsFor power management system design, Microchip offers a family of intelligent charge management controllers such as the MCP73871 for portable charging applications, 8-bit flash cores, and PIC16F1xxx series microcontrollers (such as the PIC16F1933) that support USB portable applications. The PIC18F1XK50 MCU family provides USB host monitoring to further reduce power consumption by setting a “sleep†mode or other power management mode when the PIC microcontroller is not connected to the USB. At present, Microchip offers the lowest cost USB microcontrollers, including the industry's most comprehensive line of 8-bit, 16-bit and 32-bit USB microcontrollers. All PIC microcontrollers offer a single integrated development environment MPLAB® IDE support.
MCP73871 Charge Management Controller (Evaluation Board)
8-bit PIC microcontroller with the lowest cost and support for USB applications - PIC18F14K50
Micro-core charge management series part of the product example
Fume Disposable Vape,Hyde Vape Rechargeable ,E Cigarette Pods ,Big Smoker Hqd
tsvape , https://www.tsvaping.com