Wearable devices are integrating more and more functions, which poses challenges for power management. The battery in a wearable device is usually very small, and the device needs to work for a long time without charging, so power consumption is a key design consideration. To ensure the fashion of wearable devices, the battery needs to be kept within a very small size.
Table of Contents
What is Wearable Power ?
When we are outdoors or in inconvenient charging conditions, batteries become an indispensable part of all wearable technologies. Wearable devices such as fitness trackers, smart watches, VR, Bluetooth headsets, wearable cameras, etc., without power, we can tie wearable gems to our legs and wrists. This is where wearable batteries come in. The wearable battery is connected to the wearer’s clothing or belt and provides the same energy as other wearable technologies. They are small, light, unobtrusive, and have enough power to power all wearable devices.
In wearable devices, the battery is usually very small (for example, 100 mAh), and it takes days or even weeks for the device to not charge, so power consumption is a key design consideration. Therefore, high power conversion efficiency will be a key design element.
What is the biggest challenge of wearable technology?
1. Even if the size of the battery used in wearable devices must be small, the battery intelligent management system should have almost all types of safety designs, such as overvoltage protection, overcurrent protection, overheat protection, short circuit protection and low-temperature charging.
2. Due to the small size of wearable batteries, the requirements for charging accuracy are increased, and it is not easy to charge these small batteries. The charger must be able to provide a small charge cut-off current. In other words, the accuracy of the charger should be higher, up to mA level. For example, in a Bluetooth headset battery system, the normal charging current of a 500 mAh battery is 300m A (0.6 C), and the charging cut-off current should be 1/10 to 1/20 of the normal charging current, that is, 50 mA to 25 mA .
However, in the smart bracelet, since the battery capacity may be 120 mAh, the normal charging current will be 72 mA, and the charging cut-off current should be 12 mA to 6 mA. It is difficult to find a charger device that meets this requirement.
3. Wearable device batteries should have a long battery life. Generally, if consumers charge their devices every day, they will feel dissatisfied, and the entire power management should be able to provide efficient power.
What does Allrunbattery do to responed these challenges ?
In order to responed these challenges, AllrunBattery has taken corresponding measures, based on its most advanced battery production technology, and gradually solved the battery runtime requirements. When using wearable devices, we need to use novel batteries because the power density has increased.
With the great success of wearable applications such as smart shoes and Bluetooth headsets, small batteries have become the decisive choice for wearable devices. Because wearable devices need to be used anywhere, some battery designs are limited by size or special shape requirements. AllrunBattery wearable battery has small size, irregular shape, wide applicable temperature range (-40°C~50°C or -20°C~60°C), etc. It is a customized power supply solution and a development trend.
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