With the increasing popularity of portable power station, people's life is inseparable from the "company" of portable power station, and the disadvantage of portable power station is "no power, no operation". In order to maintain the convenience of portable power station, the volume of portable power station is deeply studied, and the huge volume of mobile power supply is reduced to portable power station.

    With the gradual expansion of the application market of portable power station, due to various situations, consumers' demand for mobile power supply is also diversified, such as "hand warmer" power bank supply, mini mobile power supply, flashlight mobile power supply, etc, So many functions are integrated into the mobile power supply is the future direction of development.

    In recent years, there has been a "mobile power " related project in the portable power station market. According to different age groups, we have analyzed the design problems in the current market and the design concept of mobile power in the future. It is found that young people will pay more attention to personalized needs, such as mobile power for taking photos, mobile power for mobile phone bracket, mobile power for mobile phone, mobile power for mobile phone, mobile power for mobile phone, mobile power for mobile phone bracket, mobile power for mobile phone, mobile power for mobile phone, mobile power for mobile phone, mobile power for mobile phone, mobile power Warm hand treasure mobile power supply and alarm clock portable power station and other multi-functional mobile power supply. But for people aged 30-40, they are more concerned about the safety and quality of products.

     In the comparison between mobile phone bracket and hand warmer, although the final result is that the design of "mobile power supply hand warmer" is closest to the preferences of this group of people, this kind of mobile power supply is still relatively narrow compared with the buyers. According to the survey of people aged 30-40 who do not choose hand warmer or choose hand warmer, one of the major problems that they do not choose hand warmer is the quality, The similar charging wire will be heated quickly while charging the mobile phone, which may seriously protect the mobile phone. Therefore, they will have misunderstanding on the heating system of the power storage function of the portable power station, which requires a new design concept for the combination of the portable power station and the hand warmer. The design of the safety performance must achieve the most accurate data to avoid such problems.