Battery Pack Wireless Charging Shielding Plate
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Solution Overview
Problem
Existing battery packs for mobile terminals face challenges in efficiently and safely charging wirelessly, particularly in managing temperature and ensuring proper charging levels, while also requiring effective shielding of magnetic fields during wireless power transmission.
Innovation Solution
The battery pack incorporates a temperature sensor, charge detector, electrical power coil, rectifier, power controller, and charge controller, along with a shielding plate, to manage wireless charging efficiently and safely, with connector terminals configured for optimal electrical connection and power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power transmission is implemented to charge the battery pack, then charging convenience is improved, but magnetic field interference and safety risks increase
Solution Approach 1:
A shielding plate is introduced as an intermediary component between the battery cell and the electrical power coil. This shielding plate selectively blocks magnetic field interference while allowing wireless power transmission to proceed, thus resolving the contradiction between charging convenience and magnetic field interference
Solution Approach 2:
The battery pack is segmented into distinct functional zones: a battery assembly area containing the battery cell, and a wireless charging area containing the electrical power coil. This spatial segmentation reduces magnetic field interference to the battery cell while preserving wireless charging functionality
2Reliability
If multiple monitoring components (temperature sensor, charge detector) are added to ensure safe wireless charging, then charging safety is improved, but device complexity increases
Solution Approach 1:
Multiple monitoring functions (temperature sensing, charge level detection, overcharge protection) are merged into a single integrated control circuit. This consolidation maintains comprehensive safety monitoring while reducing the number of discrete components and simplifying the overall device structure
Solution Approach 2:
The control circuit is designed with multi-functionality, serving as a universal monitoring and management unit that handles temperature monitoring, charge detection, and charging control tasks simultaneously, thereby improving safety without proportionally increasing complexity
3Measurement precision
If the temperature sensor and charge detector are disposed on the battery cell surface to improve monitoring accuracy, then measurement precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The monitoring approach transitions from direct contact measurement (requiring high placement precision) to field-based measurement. The temperature sensor and charge detector detect temperature and charge levels through the battery cell surface without requiring precise positioning, thus improving manufacturing flexibility while maintaining monitoring accuracy
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
This configuration ensures reliable and safe wireless charging by monitoring temperature and charging levels, while effectively shielding magnetic fields, thereby enhancing the performance and safety of battery packs in mobile terminals.
Implementation Method 1
an electrical power coil configured to receive a wireless electrical power signal from an external device
Implementation Method 2
a shielding plate disposed between a battery cell and the electrical power coil for shielding a magnetic field generated from the electrical power coil
Data Source
AI summary
Various embodiments of a battery pack, a mobile terminal having such a battery pack, and related methods are disclosed. In one exemplary embodiment, a battery pack for a mobile terminal may include a battery cell, a temperature sensor configured to measure a temperature of the battery cell, a charge detector configured to detect whether the battery cell is charged above a predetermined level, and a first connector terminal configured to electrically connect to the mobile terminal.