Power Transmission Wireless Power

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A High‐Efficiency, Portable, Solar‐Powered Cooling System Based on a Foldable‐Flower Mechanism and Wireless Power Transfer Technology for Vehicle Cabins


Tingsheng Zhang

  • Southwest Jiaotong University

Yan Feng

Xiaoping Wu

Yajia Pan
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Abstract and Figures

In summer, the high temperature inside vehicles is a problem, because cooling a vehicle parked under the scorching sun is both time and energy consuming. This paper proposes a portable solar‐powered cooling system (SPCS) based on a foldable‐flower mechanism and wireless power transfer (WPT) technology. The proposed system consists of three main parts: a solar foldable‐flower module (SFFM), an energy transfer module, and a temperature control module. The solar foldable‐flower module is a novel foldable mechanism that achieves high space utilization through a rotating process and a folding process, like a flower opening its petals. The solar foldable‐flower module, equipped with photovoltaic (PV) cells, collects solar energy and converts it into electricity. The energy transfer module stores electricity from the solar foldable‐flower module in a supercapacitor via a WPT unit. The temperature control module achieves automatic temperature regulation using a cooling device. Experimental results show that output power can reach up to 7.571 W with a load resistor of 5 Ω, while the efficiency of the WPT can reach up to 73.6% with a load resistor of 15 Ω. Moreover, thermal simulation results illustrate that the proposed system can achieve an average temperature reduction of 27.45 ℃, making it feasible and effective to cool a hot vehicle cabin. This article is protected by copyright. All rights reserved.

Flowchart of the proposed solar‐power cooling system. a) Structure and working principle of the SFFM. b) Energy transfer module of the solar‐power cooling system. c) Temperature control module. d) Workflow of the solar‐power cooling system.

Schematic diagram of the solar‐power cooling system. a) Lateral view of the solar‐power cooling system. b) Top view of the solar‐power cooling system.

Structural design of the SFFM. a) Unfolded view of the SFFM. b) Symmetric folding process of the SFFM. c) Rotating folding process of the SFFM. d) Folded view of the SFFM. e) Overall view of the folded SFFM installed on vehicle.

Installation view of the SFFM. a) The SFFM is placed on the roof from inside vehicle. b) The SFFM is installed on the vehicle. c) The folded SFFM on the vehicle. d) Symmetric folding process of the SFFM on the vehicle. e) Rotating folding process of the SFFM on the vehicle. f) The unfolded SFFM on the vehicle.

Energy transfer process.

Figures - available from: Energy Technology

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