Inductive Power Transfer Transformer, also known as an inductive transformer, is a device that uses the principle of electromagnetic induction to transfer electrical energy. It is mainly used in application scenarios that require wireless or contactless power transmission.
working principle
Electromagnetic induction: Induction power transformers transfer energy through electromagnetic induction between one coil (primary coil) and another coil (secondary coil). When the primary coil is energized, a changing magnetic field is generated, which induces voltage in the secondary coil, thereby achieving the transmission of electrical energy.
Wireless power transmission: This type of transformer is commonly used in wireless power transmission systems, such as wireless charging devices. By transferring electrical energy through a magnetic field between the device and charger, the requirement for physical connection is eliminated.
main features
Non contact transmission: allows for the transfer of electrical energy without direct contact, which is very useful in many application scenarios, such as between a charging pad and a mobile phone.
Isolation protection: The transmission of electrical energy is completed through electromagnetic induction, which has good electrical isolation performance and can effectively protect equipment and users.
High frequency operation: In order to improve energy transmission efficiency, inductive power transformers usually operate at higher frequencies, which requires specialized design and materials.
Efficiency: Transmission efficiency depends on factors such as coil design, distance, alignment, etc., and is usually higher over short distances.
application area
Wireless charging: Charging devices such as smartphones, smartwatches, wireless headphones, etc.
Medical equipment: used for contactless power transmission, reducing the inconvenience caused by cables.
Electric vehicles: Wireless charging systems are gradually being applied in the field of electric vehicles.
Industrial applications: Used in some industrial equipment that requires avoiding physical contact or friction.
Design considerations
Coil design: The size, shape, and winding method of the coil can all affect the performance of the induction transformer.
Magnetic materials: Using materials with high magnetic permeability can improve transmission efficiency.
Frequency selection: Choose an appropriate operating frequency to balance efficiency and design complexity.