Multifunctional electric heating hand warmer based on power failure protection

Abstract

The invention discloses a multifunctional electric heating hand warmer based on power failure protection, and relates to the field of electric heating hand warmer. The multifunctional electric heatinghand warmer based on power failure protection comprises a control device, a power bank, a heating device and a power failure protection device, wherein the control device comprises a singlechip; thepower failure protection device comprises a power failure detection circuit and a relay; the heating device is electrically connected with a key; the key, the power failure detection circuit and the relay are electrically connected with a singlechip; the relay is further electrically connected with the power bank; the power bank is electrically connected with a load; and the relay is further electrically connected with an input end. The problems that an existing hand warmer does not have a power failure detection function, the power bank and the load cannot be disconnected in time, and thus, the hand warmer and the power bank are burnt out are solved. Effects of detecting power failure conditions in time and realizing real power failure protection are achieved.

Description

technical field [0001] The invention relates to the field of electric heating hand warmers, in particular to a multifunctional electric heating hand warmer based on power-off protection. Background technique [0002] Electric hand warmers can be roughly divided into three types: one is to heat water by heating water, which is different from traditional hot water bags, electric hot water bags save the trouble of adding water, as long as you plug in the power supply and wait for 10 minutes to heat up; The second is to generate heat through chemical reactions, and the heat is generated through the contact of chemical substances inside, and the temperature is about 40°C; the third is to use the lithium battery function, the internal heating sheet generates heat, and the USB interface is used to charge and discharge. The function of charging and discharging is generally used as a mobile power supply. It is small in size and easy to carry around. The temperature can reach about 50...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is: the present invention provides a multifunctional electric hand warmer based on power-off protection, which solves the problem that the existing hand warmer cannot disconnect the charging treasure and the load in time due to the lack of power-off detection, thus causing the hand warmer to And the problem of burning out the power bank

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