SparkFun Battery Babysitter – LiPo Battery Manager 鋰電池充電帶電量計

描述

SparkFun Battery Babysitter – LiPo Battery Manager 鋰電池充電帶管理監控電量模組

SparkFun Battery Babysitter 是一款多合一單節鋰聚合物（LiPo）電池管理器。它具備多功能電池管理，本身帶電池充電管理與電池狀態監視器，而且您需要做的所有事情都可以確保電池供電的項目安全，廣泛地運行。電池保姆具有一對德州儀器（TI）的LiPo管理IC：一個BQ24075電池充電器和一個BQ27441-G1A電量計。 該充電器支持高達1.5A的可調充電速率，以及USB兼容的100mA和500mA選件。 它還具有電源路徑管理功能，即使電池沒電了，也可以保證為您的項目供電。 基於I 2 C的自校準BQ27441-G1A測量電池的電壓，以估計其充電百分比和剩餘容量。 它還連接到電流感應電阻器，從而可以測量電流和功率！ 如果您需要隨時關注項目的功耗，這是一個方便的IC。

特色與功能

• iPo充電器和LiPo電量計合二為一
• 撥碼開關可選擇100mA，500mA或1.5A的充電速率
• 用於充電的MicroUSB端口或外部選件
• 動態功率路徑管理可維持可靠的輸出電源
• 開/關開關可斷開電池連接，以節省更多電量
• 5V耐壓 IIC 接口至電量計
• 電量計可測量電壓，百分比和電流

資源與下載

• Schematic
• Eagle Files
• Hookup Guide
• Datasheet (BQ24075 Charger)
• Datasheet (BQ27441-G1 Fuel Gauge)
• Arduino Library
• GitHub

SparkFun Battery Babysitter – LiPo Battery Manager

The SparkFun Battery Babysitter is an all-in-one single-cell Lithium Polymer (LiPo) battery manager. It’s half battery charger, half battery monitor, and all you’ll ever need to keep your battery-powered project running safely and extensively.

The Battery Babysitter features a pair of Texas Instruments LiPo-management ICs: a BQ24075 battery charger and a BQ27441-G1A fuel gauge. The charger supports adjustable charge rates of up to 1.5A, as well as USB-compliant 100mA and 500mA options. It also features power-path management, guaranteeing power to your project even if the battery has died. The self-calibrating, I²C-based BQ27441-G1A measures your battery’s voltage to estimate its charge percentage and remaining capacity. It’s also hooked up to a current-sensing resistor, which allows it to measure current and power! It’s a handy IC to have, if you ever need to keep an extra eye on your project’s power draw.

Features

• iPo Charger and LiPo Fuel Gauge combined into one board
• DIP-switch-selectable charge rates of 100mA, 500mA or 1.5A
• MicroUSB port for charging, or external options
• Dynamic power-path managment maintains a reliable output supply
• On/Off switch disconnects the battery for more power saving
• 5V-tolerant I²C interface to fuel gauge
• Fuel gauge measures voltage, percentage, and current