What is wireless charging?

It is a technology that can be charged without a charging cable connection.

Wireless charging products are mainly sold to developed countries such as Europe and the United States. In Asia, the countries and regions where they are distributed are: China, Japan, South Korea, Saudi Arabia, Taiwan, Singapore and Hong Kong.

The basic principle of wireless charging:

It is necessary to install a coil at the transmitting and receiving ends of the mobile phone and the wireless charger, the transmitting end coil is connected to the wired power supply to generate electromagnetic signals, and the receiving end coil induces the electromagnetic signals at the transmitting end to generate current.

The wireless charging technology that is used a lot now mainly uses electromagnetic induction. The other three methods are magnetic field resonance, radio wave, and electric field coupling. There are also standards for wireless charging.

Wireless charging standards are: Qi standard, PMA standard, A4WP standard

Qi standard:

The Qi standard is a wireless charging standard launched by the Wireless Power Consortium (WPC), the world's first standardization organization to promote wireless charging technology. This standard uses electromagnetic induction technology and has two major characteristics: compatibility and versatility. Wireless charging products need to pass the Qi certification mark, and then the corresponding certification marks of other countries and regions also need to be obtained. Bluetooth TWS headset detection

Global wireless charging product certification introduction:

1. Quality Inspection

For wireless charging products to be sold in the Chinese market, a quality inspection report is required.

2. NCC certification

Wireless charging products are sold to the Taiwan market, and NCC certification is required in addition to Qi certification.

1. NCC certification process for wireless charging products

1) Application acceptance;

2) Document review;

3) Receipt of sent samples;

4) Sample prediction;

5) Formal testing in Taiwan laboratory (NCC authorized testing laboratory);

6) Issue and confirm draft report;

7) Issue the original report;

8) Submit to the NCC issuing agency;

9) The certificate is issued, the sample is returned and the case is closed;

2. Precautions for NCC certification of wireless charging products:

1) Customers will encounter difficulties in the technical data, mainly referring to the antenna test report. Ask the antenna manufacturer to provide this information;

2) Special products will involve requiring customers to provide auxiliary test wires, such as a wireless system with transmitting and receiving functions (usually 2.4G) as an example, so please pay attention to manufacturers and friends; lithium battery testing

Three, South Korea KC certification

Wireless charging products are sold to the Korean market, and KC certification is required in addition to Qi certification.

1. KC certification process for wireless charging products

2. Essential information for KC certification of wireless charging products

1) Application form for opening a case;

2) CB test report and certificate;

3) Battery specification;

4) Battery specifications;

5) UN38.3 test report of battery cell;

6) Manufacturer’s ISO certificate;

7) CDF;

8) Label;

9) MOS tube and IC specifications;

10) Business license (applicant + manufacturer + factory);

11) Agency signature document (application form + declaration letter);

12) South Korean importers (applicants can only be local Korean companies or battery manufacturers). Environmental testing certification

Reminder: The preparation stage of KC certification materials cannot be ignored, it is very important for the entire certification!

Four, PSE/METI certification

Wireless charging products are sold to the Japanese market, and PSE/METi certification is required in addition to Qi certification.

Wireless charging product PSE/METi certification process

2. Wireless charging product PSE certification/METi filing essential information

2.1 Japan PSE certification information for wireless charging products

1) Product PSE data list:

2) Application form for opening a case;

3) Product instruction manual;

4) Circuit schematic diagram;

5) List of key components;

6) Block diagram;

7) Electronic file label.

If wireless charging products with batteries still need to provide battery specifications;

2.2 Japan METI filing data list

1) Application form for opening a case;

2) PSE test report (products with battery or adapter, battery and adapter also need PSE test report);

3) Product manual (Japanese + English);

4) Product specifications;

5) BOM table;

6) Product photos;

7) Statement of differences (if there are series models in the report).

Five, FCC ID certification

Wireless charging products are sold to the US market, except for Qi certification, FCC ID certification is still required. Click here to learn more about US FCC ID certification

FCC ID certification process for wireless charging products

2. FCC ID certification essential information for wireless charging products

The FCC ID certification preparation materials for wireless charging products are consistent with the above CE-RED certification preparation materials.

In addition, Grantee Code appears in the above authentication flow chart. What is Grantee Code, please see the figure below:

Six, CE-RED certification

Wireless charging products are sold to the EU market, in addition to Qi certification, CE-RED certification, ROHS and REACH certification are still required.

CE-RED certification process for wireless charging products

2. Essential information for CE-RED certification of wireless charging products

1) User manual (User manual, English);

2) Block Diagram (block diagram, indicating all crystal oscillators);

3) Schematic (circuit schematic diagram, block diagram and circuit schematic diagram should correspond);

4) Operational Description (working principle description, English);

5) Circuit diagram and specification of wireless module;

6) PCB Layout;

7) Label (label);

8) Signature file (after the double test is completed, the customer's signature can be confirmed);

9) Application form for opening a case;

Seven, CB certification

Wireless charging products are sold to CB member countries, such as Spain, Brazil, etc. In addition to Qi certification, CB certification is also required.

8. IECEE registration

Wireless charging products are sold to Saudi countries. In addition to the above CB certification, IECEE registration is also required.

1. Required materials for Saudi certification of wireless charging products

1) CB certificate and report;

2) Clear product photos;

3) User manuals in English and Arabic;

4) A copy of the manufacturer’s business license;

5) A copy of the importer’s business license;

6) Signature document (Manufacturer authorization letter/ importer DOC/ Manufacturer DOC).

2. CB to IECEE precautions

1) Pay attention to the letterhead of the company for each signed document in the CB to IECEE registration;

2) The IECEE issuance time is normally about 3 weeks, but it may be affected by the efficiency of the Saudi government personnel, and there may be 5 weeks;

3) When applying for IECEE, there will be many uncertain factors. For example, sometimes you may be notified that the template needs to be uniformly revised when the certificate is about to be issued; therefore, suppliers exporting to Saudi countries need to be particularly careful in certification. Quality Inspection Center

Nine, Qi certification

If the product uses the Qi standard, it must pass the Qi certification to ensure its safety, interoperability and energy efficiency requirements. Click here to learn more about Qi certification of wireless charging products