Solid-State Battery Module with Wireless Charging and Short Wiring
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Solution Overview
Problem
Existing non-contact charging type secondary batteries, such as those described in Japanese Patent No. 5798407, are difficult to downsize and are not suitable for small devices like wearable devices, making them hard to handle and mount.
Innovation Solution
A wireless rechargeable solid-state battery module with a solid-state battery, internal circuit, and exposed terminals, capable of wireless charging, which eliminates the need for a wireless charging circuit on the electronic circuit board, allowing for reduced size, weight, and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-contact charging type secondary battery with a cylindrical casing is used, then wireless charging function is achieved, but the device size cannot be reduced and is difficult to mount on small devices
Solution Approach 1:
The invention divides the traditional integrated battery into a solid-state battery module and a separate wireless charging circuit. The solid-state battery module contains only the battery cell with terminals, while the wireless charging circuit is mounted separately on the circuit board. This segmentation allows the battery to be downsized and the wireless charging function to be integrated into the device's existing circuit board, resolving the contradiction between maintaining wireless charging capability and reducing device size.
2Adaptability or versatility
If a non-contact charging type secondary battery is used, then wireless charging function is achieved, but the battery is hard to handle and mount on small devices
Solution Approach 1:
By separating the solid-state battery module from the wireless charging circuit, the invention makes the battery module compact and easy to handle. The module can be mounted like a conventional battery, while the wireless charging circuit is integrated into the device's circuit board, significantly improving ease of mounting and handling for small devices.
Solution Approach 2:
The solid-state battery module is designed with universal terminals that can be mounted on various circuit boards and devices. The separate wireless charging circuit can be integrated into the device's existing power management system, making the solution adaptable to different device types and improving ease of operation across multiple applications.
3Adaptability or versatility
If wireless charging circuit is integrated into the battery, then wireless charging function is achieved, but wiring length increases causing power loss and malfunction
Solution Approach 1:
The invention extracts the wireless charging circuit from the battery module and places it on the device's circuit board. This extraction eliminates the need for long wiring between the battery and wireless charging circuit, as they are now connected through the device's existing circuit board traces, thereby reducing power loss and potential malfunctions.
4Adaptability or versatility
If wireless charging circuit is integrated into the battery, then wireless charging function is achieved, but device size and weight cannot be reduced
Solution Approach 1:
By segmenting the wireless charging system into a compact solid-state battery module and a separately mounted circuit board integration, the invention eliminates redundant housing and structural components. The solid-state battery module is inherently lighter, and integrating the wireless charging circuit into the existing circuit board avoids adding separate wireless charging components, thereby reducing overall device weight.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables wireless charging in any state, reduces power loss in wiring, suppresses malfunctions, and achieves smaller, lighter, and more efficient electronic devices by integrating the solid-state battery and wireless charging circuit with short wiring.
Implementation Method 1
The internal circuit includes a wireless charging circuit that receives power from an outside via a power transmission magnetic field
Implementation Method 2
a barrier layer that isolates the solid-state battery from an outside air environment
Data Source
AI summary
A wireless rechargeable solid-state battery module includes a solid-state battery; internal structures that are provided with an internal circuit electrically connected with the solid-state battery; a barrier layer that isolates the solid-state battery from an outside air environment; and a positive electrode terminal and a negative electrode terminal each of which is electrically connected with the solid-state battery, is exposed on an outer surface, and is arranged so that the positive electrode terminal or the negative electrode terminal can be mounted on a mounting board. The internal circuit includes a wireless charging circuit that receives power from an outside via an electromagnetic field or a magnetic field produced by power transmission from the outside and controls charging to the solid-state battery.