Research on flexible wireless power supply technology for smart wearable electronic devices

Background

Flexible power supply technology has opened up a new direction for battery energy replenishment of smart wearable electronic devices. Flexible power supply technology has been applied to implantable medical electronic devices, medical sensors such as capsule endoscopes and other medical electronic devices, which can effectively solve the problem of patients using surgery to replace battery energy storage. Wireless power supply based on flexible conductive materials can meet the multi-scenario energy supply requirements of smart wearable electronic devices due to its high energy efficiency, high stability and high shape plasticity.

Flexible wireless power supply technology will form a new scientific research paradigm or disciplinary growth point for smart wearable electronic devices.

Brief Introduction

The project team made graphene conductive materials into flexible transmitting end plates and flexible receiving end plates of the electric field coupled wireless power transmission system and formed a single coupling capacitor mechanism. The single wire-single coupling capacitor mechanism electric field coupled wireless power transmission method was used to achieve low-power (power level: 100 mW) wireless power transmission (transmission distance: 20 cm), achieving the effect of easy shaping and power supply for smart wearable electronic devices. In addition, graphene materials can be made into small-capacity supercapacitors to achieve flexible energy storage. This technology has been initially applied in the power supply of biosensors and flexible signal processors of smart wearable electronic devices.

Figure 1 Flexible graphene conductive material

Figure 2. Characteristics and applications of flexible graphene materials

Figure 3 Experimental platform for electric field coupled wireless power transmission of smart wearable electronic devices

Highlights

In this study, a flexible power supply that does not require magnetic components is used, which makes it easier to achieve integrated and shaped power conversion, and greatly reduces the complexity of the power conversion mechanism. This study provides an alternative solution to the bottleneck problem of high-quality energy supply for smart wearable electronic devices.

This research belongs to the frontier research field of interdisciplinary subjects such as electrical engineering, biomedical engineering, materials science and engineering, and communication engineering. The relevant research results can realize convenient and stable power supply for smart wearable electronic devices, and have relatively high scientific research and practical application value.

Prospects and Applications

The research results have initially realized the power supply of biosensors and flexible signal processing units of smart wearable electronic devices. In the future, they will be improved and applied to implantable medical electronic devices, reducing the risk of patients undergoing two surgeries and alleviating the economic burden on families. They have good market prospects and certain economic value. The research results can be extended to flexible electronic display screens, flexible printed circuit boards, and sports goods, etc., to achieve integrated and flexible power supply needs.