introduction_of_the_qi_standard
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| introduction_of_the_qi_standard [2025/04/24 11:19] – ↷ Links adapted because of a move operation 184.73.52.74 | introduction_of_the_qi_standard [2025/05/01 07:31] (current) – [Key advantages] tm | ||
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| ====What is Qi==== | ====What is Qi==== | ||
| - | The Qi (pronounced chee) standard is a [[overview_of_wireless_power_transfer|inductive power transfer (IPT)]] technology. The standard is developed for smartphones and other mobile devices. Therefore, Qi is considered a low-power and static WPT charging standard. Transmitter and receiver are placed in **close proximity** to each other (mm-cm). This close coupling is essential for maximising efficiency. To further enhance efficiency, the Qi standard incorporates **technology-specific features**. These features are discussed in detail later in this article. Today, there are more than **11,000 Qi Certified products** on the market. | + | The Qi (pronounced chee) standard is a [[overview_of_wireless_power_transfer|inductive power transfer (IPT)]] technology. The standard is developed for smartphones and other mobile devices. Therefore, Qi is considered a low-power and static WPT charging standard. Transmitter and receiver are placed in **close proximity** to each other (mm-cm). This close coupling is essential for maximising efficiency. To further enhance efficiency, the Qi standard incorporates **technology-specific features**. These features are discussed in detail later in this article. Today, there are more than **11,000 Qi Certified products** on the market |
| ====Who are the developers==== | ====Who are the developers==== | ||
| - | The Qi standard was developed by the **Wireless Power Consortium (WPC)** and was first introduced in July 2010 with Version 1.0. WPC is an open standards development group that collaborates with electronics and technology companies. Today, the consortium consists of over 300 member companies worldwide, including major technology firms such as **Apple, Samsung, Google, and Meta** | + | The Qi standard was developed by the **Wireless Power Consortium (WPC)** and was first introduced in July 2010 with Version 1.0. WPC is an open standards development group that collaborates with electronics and technology companies. Today, the consortium consists of over 300 member companies worldwide, including major technology firms such as **Apple, Samsung, Google, and Meta** |
| ====Previous versions==== | ====Previous versions==== | ||
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| In 2010 the WPC launched **Qi Version 1.0**. This version supported three transmitter types: **single coil, coil arrays, and moving coils**. The coils allowed power transmission of up to **5W**. However, its design flexibility was limited, meaning manufacturers could only optimise charging performance by tweaking receiver designs rather than the transmitters themselves. | In 2010 the WPC launched **Qi Version 1.0**. This version supported three transmitter types: **single coil, coil arrays, and moving coils**. The coils allowed power transmission of up to **5W**. However, its design flexibility was limited, meaning manufacturers could only optimise charging performance by tweaking receiver designs rather than the transmitters themselves. | ||
| - | Two years later, **Qi Version 1.1** expanded the standard by introducing 12 transmitter types. This gave manufacturers more room for innovation. This version also improved **[[start|Foreign Object Detection (FOD)]]**. Another key upgrade was the ability to power Qi transmitters using USB chargers. | + | Two years later, **Qi Version 1.1** expanded the standard by introducing 12 transmitter types. This gave manufacturers more room for innovation. This version also improved **[[foreign object detection in the Qi standard|Foreign Object Detection (FOD)]]**. Another key upgrade was the ability to power Qi transmitters using USB chargers. |
| The release of **Qi Version 1.2** in 2015 marked a significant step forward. The introduction of the **Extended Power Profile (EPP)** increased charging speeds to **15W**. This version also included thermal testing to improve heat management and **unique IDs for power receivers**, | The release of **Qi Version 1.2** in 2015 marked a significant step forward. The introduction of the **Extended Power Profile (EPP)** increased charging speeds to **15W**. This version also included thermal testing to improve heat management and **unique IDs for power receivers**, | ||
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| By 2021, **Qi Version 1.3** further enhanced the standard by focusing on **security**. One of the major improvements was **authentication features**, ensuring safer and more reliable wireless charging. | By 2021, **Qi Version 1.3** further enhanced the standard by focusing on **security**. One of the major improvements was **authentication features**, ensuring safer and more reliable wireless charging. | ||
| - | In 2023, WPC unveiled **Qi2**, a next-generation standard featuring the **[[start|Magnetic Power Profile (MPP)]]**. Inspired by Apple' | + | In 2023, WPC unveiled **Qi2**, a next-generation standard featuring the **Magnetic Power Profile (MPP)**. Inspired by Apple' |
| + | (Evolution of Qi Wireless Charging Standard & What’s New With Qi2, n.d.; History of the Qi Specifications, | ||
| ====Key advantages==== | ====Key advantages==== | ||
| - | All previous improvements of the Qi standard resulted in several key advantages. The updated list of these **technology-specific features** are: | + | All previous improvements of the Qi standard resulted in several key advantages. The updated list of these technology-specific features are: |
| * [[power_transfer_architecture_of_the_qi_standard|Transmitter can deliver up to 15W]] | * [[power_transfer_architecture_of_the_qi_standard|Transmitter can deliver up to 15W]] | ||
| * Operating frequency of 360kHz | * Operating frequency of 360kHz | ||
| - | * [[start|Magnetic Power Profile (MPP)]] | + | * Magnetic Power Profile (MPP) |
| - | * [[start|Foreign Object Detection (FOD)]] | + | * [[foreign object detection in the Qi standard|Foreign Object Detection (FOD)]] |
| * Universal compatibility | * Universal compatibility | ||
| - | * [[start|Bidirectional in-band communication]] | + | * [[Bidirectional in-band communication in the Qi standard|Bidirectional in-band communication]] |
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introduction_of_the_qi_standard.1745493551.txt.gz · Last modified: by 184.73.52.74