Wireless Charging Cases for Mobile Phones
Modern wireless charging systems operate at efficiencies between 40-70% under ideal conditions, but real-world performance often falls below these levels due to misalignment, interference from case materials, and varying coil configurations. Device cases must balance electromagnetic permeability for charging with mechanical protection, while maintaining precise spacing between 5-15mm for optimal power transfer.
The fundamental challenge lies in designing cases that enhance wireless charging efficiency while meeting competing demands for durability, thermal management, and compatibility with mounting systems.
This page brings together solutions from recent research—including optimized metal plate configurations, adaptive coil positioning mechanisms, integrated power management systems, and multi-functional charging architectures. These and other approaches focus on practical implementations that maximize charging performance while maintaining case functionality and user convenience.
1. Mobile Phone Charging Case with Integrated Power Supply and Multi-Mount Locking Mechanism
STRIDE CHARGE INC., 2023
A mobile phone charging case that can be mounted on objects like a bike or stroller to provide power on the go. The case has a built-in power supply and locking mechanism to connect with mounts for attaching to objects. It allows charging the phone while securely mounting it on things like a bicycle handlebar. The locking mechanism lets the case lock onto different mounts, like one for a bike or one for a stroller. This enables the phone to be charged and mounted simultaneously during activities that lack power outlets.
2. Cellphone Case with Integrated Magnetic Mount for Wireless Charger Attachment
ANNEX PRODUCTS PTY. LTD., 2023
Mounting a wireless cellphone charger to a cellphone case for charging a cellphone when secured. A cellphone case has a bore, recess, and retention ring. The charger mount has a protrusion, wireless charger, and metal plate. The charger mounts onto the cellphone case by aligning and magnetically coupling the protrusion and metal plate.
3. Phone Case with Detachable Battery and Proximity-Activated Wireless Charging Coils
Dong In Kim, 2021
A phone case that adds wireless charging capability to smartphones. The case has a detachable battery pack with wireless charging coils. It also has an activation component that senses when a wireless charging pad is brought near the case and automatically starts wirelessly charging the phone.
4. Smartphone Case with Detachable Power Unit and Proximity-Activated Wireless Charging Mechanism
Dong In KIM, 2020
A smartphone case that can activate wireless charging when a wireless charging pad is brought close to the case. The case has an attachable/detachable power source unit with a coil to charge the phone battery wirelessly. The case also has an activation mechanism that recognizes when a compatible wireless charging pad is near and triggers the attached power source to charge the phone.
5. External Wireless Charging Case with Integrated Battery, Bidirectional Wireless Power Transmission, and Auxiliary Processing Unit
mophie inc., 2020
Extending battery life and functionality of smartphones and other mobile devices by providing an external wireless battery case/holster that can wirelessly charge the device and be charged wirelessly itself. The case has a built-in battery, wireless receiver, and transmitter to wireless power the device. It can be charged by wire or wirelessly. Charging the device and case from separate sources simultaneously speeds up charging. The case can also have processors to run apps, providing additional processing capabilities.
6. Movable Attachment Apparatus with Rotatable Elongated Body for Unobstructed Wireless Charging
ESI Cases & Accessories, 2020
A movable attachment apparatus for holding a portable electronic device like a phone that facilitates wireless charging without obstructing the charging coils. The apparatus has two attachment portions that can be attached to different locations on the device back. These are connected by a rotatable elongated body. When one attachment point is fixed, and the other is detached, the body can rotate to move the holder out of the way for wireless charging.
7. Metal Plate for Phone Case with Rounded Concave Edge to Avoid Wireless Charging Coil Overlap
SPIGEN KOREA CO., LTD., 2020
A metal plate design for a phone case allows magnetic mounting while avoiding interference with wireless charging. The plate has a rounded concave edge that does not overlap the phone's wireless charging coil area. This allows the phone case to attach magnetically to a mount while still enabling wireless charging.
8. Metal Plate for Phone Case with Rounded Concave Edge for Wireless Charging and Magnetic Mounting
SPIGEN KOREA CO., LTD., 2019
A metal plate design for a phone case that allows both wireless charging and magnetic mounting. The metal plate has a rounded concave edge so it doesn't block the charging coil. The rounded edge, which is symmetrical with the coil's inner and outer circles, allows wireless charging while still enabling magnetic mounting to a support with a magnet. The rounded edge prevents the metal plate from overlapping and obstructing the coil, while still allowing magnetic attraction between the plate and an external magnet.
9. Mobile Device Protective Case with Sealant-Based Waterproofing and Integrated Solar and Wireless Charging Modules
Shenzhen Xiao Bei Ke Industrial Co., Ltd, 2019
A waterproof protective case for mobile devices that provides waterproofing without using a seal ring and improves device endurance. The case has a front cover with a screen window, a middle frame, and a rear cover that clamp together. A waterproof sealant between the front cover and middle frame makes it waterproof. The rear cover has solar and wireless charging modules, a portable battery, a circuit board, and a charging plug. The circuit board controls charging modes for the device and battery.
10. Protective Case with Embedded Rechargeable Battery and Wireless Power Transfer Capabilities
AMOGREENTECH CO., LTD., 2018
A protective case for portable electronic devices that can charge the device battery. The case contains an embedded rechargeable battery and wireless charging components. It can wirelessly receive power to charge its battery or transmit power wirelessly to charge the device. The case also has a wired connection to directly power the device from its battery.
Many innovative techniques for making wirelessly charging phone cases are presented in the patents here. A few of these include phone installations that are seamless and free of interference with the charging signal due to magnetic plates, detachable pouches for additional storage, spinning attachments for continuous wireless charging, and integrated charging bank covers.
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