Troubleshooting and Optimizing Your Wireless Power Bank

Are you looking to create a wireless power bank but facing the challenge of insufficient charging ampere from your wireless module? This article will guide you through the process of resolving this issue and optimizing your wireless power bank to achieve optimal charging efficiency.

Understanding the Issue

The primary issue here is that your wireless module is not producing enough Amperage to charge a phone effectively. Many users encounter this problem when they start their DIY projects or when they try to enhance the performance of a commercial power bank. In a typical power bank, cells are configured in parallel rather than series, which allows for added capacity and current output. However, if the current is still insufficient, additional steps are required to increase the power bank’s efficiency.

Increasing Cell Capacity

The most straightforward solution is to add more parallel cells to your power bank. By adding more cells in parallel, you can significantly increase the current output of your wireless power bank. This is because the total current in a parallel circuit is the sum of the currents in each branch. As a general rule, ensure that the additional cells are correctly configured and protected with the appropriate Battery Management System (BMS).

Protection and Management Systems

Proper protection and management of the battery is crucial to its longevity and performance. When adding more cells, you must consider the protection and battery management systems (BMS) that you are using. A BMS is essential to prevent overcharging, overdischarge, and short circuits. Ensure that the BMS is compatible with the additional cells you are adding and that it can manage the increased current output efficiently.

Selecting the Right Module

To ensure seamless operation, it is advisable to use a power bank module that is compatible with the cells you are using. The transmitter and receiver modules in your power bank should be selected based on the specifications of the cells and the desired output current. A good wireless power bank module should be capable of handling the necessary current to charge a phone effectively.

Optimizing the Receiver Module

The first step in optimizing the receiver module is to calculate the current requirements. If your phone requires 1.5 amps to charge optimally, your receiver module must be able to produce this amount consistently. To achieve this, the transmitter module must be capable of producing at least 3 amps current, accounting for the 50% loss that commonly occurs during wireless power transmission.

Physical and Electrical Enhancements

Improving the performance of the receiver module can be achieved through physical and electrical enhancements. For instance, using thicker bifilar wires for the receiver inductor winding can increase the current capacity. Similarly, the transmitter inductor winding should also be constructed with thicker wires. Additionally, the driver transistor for the transmitter module must be rated to switch the 3 amps current efficiently.

Conclusion

By understanding the shortcomings of your wireless power bank and implementing the necessary improvements, you can significantly enhance the charging efficiency of your device. Adding more parallel cells, ensuring proper protection and management systems, and selecting the right modules are key steps. With these optimizations, you can create a reliable and efficient wireless power bank that meets the charging needs of your devices.