Interpretation of mobile power test standards and lithium battery test standards

When the battery life of mobile power bank is not enough, it is common to bring a power bank if there is no battery. The sales volume of mobile power bank on a certain treasure is also very impressive. Some stores have a single day. It’s not surprising that thousands of units can be sold, but there are also many safety issues with mobile power banks. For China’s GB31241-2014 standard released on December 5, 2014, the full name is "Lithium for Portable Electronic Products" Safety Requirements for Ion Batteries and Battery Packs are called our country’s national mobile power standard by the media and the public, but the Ministry of Industry and Information Technology has clarified that this standard is not a mobile power national standard. There are too many misunderstandings outside, which is a misunderstanding. In this mobile power charging treasure testing agency, double test and reiterate, this GB 31241-2014 standard is not a mobile power standard, but a separate standard specifically for lithium-ion battery components. Home appliance testing

The official statement is that the national standard GB31241-2014, which is my country’s first mandatory standard for lithium-ion batteries, is not a national standard for mobile power, and cannot be regarded as a mobile power standard. The mobile power supply is a product with independent functions that can be sold and used separately, and belongs to a complete device; and the lithium battery is only a part or component of the complete device. In fact, the "Safety Requirements for Lithium Ion Batteries and Battery Packs for Portable Electronic Products" is a component standard, not a mobile power supply standard. The complete machine standard specifically for mobile power is this GB/T 35590: 2017. The standard for this set of mobile power charging treasures was implemented on July 1, 2018. It is the general specification and standard for mobile power portable digital devices. The entire regulation has 28 items to be tested for mobile power banks, including appearance identification, interface, effective output capacity, capacity retention, cycle life, short-circuit protection, electrical safety of the whole machine, overload protection and other test and inspection items. PC power detection

question Time

Q1: Can the mobile power bank charge me?

A1: In principle, this can be done, but it must be a mobile power supply from a regular manufacturer and certified and tested by the Shenzhen Testing and Certification Agency to be safer and more secure, and it will continue to lose power during the charging process. The end result That is, the mobile power battery, the computer is completely consumed, that is, it consumes faster than normal charging other devices, which is not worth the loss.

Q2: What should I pay attention to when buying a power bank?

A2: Choose the mobile power source of polymer lithium battery, because it is a very safe battery material

   Try to choose a stylish, compact and easy-to-carry

  The mobile power bank should be more practical and capable of automatic load identification and smart charging

  Pay attention to the output current, charging voltage and current, cell capacity (try to choose a product with a large capacity under the same volume), output voltage, protection parameters, etc.

At the end, let’s summarize. The national standard GB31241-2014 is a component standard and a mandatory standard for lithium batteries, while GB/T 35590:2017 is the complete standard for mobile power supplies. At present, the new energy battery laboratory is testing and testing. Strictly tested according to these two standards to ensure the safety of batteries and mobile power products. Power detection