Power supply circuit of electric heating device with low-power load device, and electric heating device

Abstract

The invention provides a power supply circuit of an electric heating device with a low-power load device, and the electric heating device. The power supply circuit comprises a first power supply module and a second power supply module, wherein the first power supply module is connected to the second power supply module and the low-power load device and used for charging the second power supply module and supplying a working voltage for the low-power load device; and the second power supply module is connected to the low-power load device and used for discharging when the first power supply module cannot supply power for the low-power load device, so as to supply power for the low-power load device. By virtue of the technical scheme provided by the invention, the power supply convenience for the low-power load device can be improved effectively, the power supply operation can be simplified and the electric energy consumption can be lowered; and in addition, the power supply circuit is energy-saving and environment friendly, safe and reliable, and capable of not only prolonging the service life of the product but also improving user experience.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a power supply circuit of an electric heating appliance with a small power load device and an electric heating appliance. Background technique [0002] At present, there are many products with low-power load devices on the market, such as rice cookers with digital clock hands, electric kettles with digital display tubes, or soybean milk machines, all of which use a single battery to power the low-power load devices. For these The battery used in the product, on the one hand, requires its capacity to be large to meet the power supply demand. On the other hand, due to the limited service life of the battery, it is often necessary to disassemble the machine and replace it with a new battery to work normally after a period of use, and the operation is troublesome; Products with charging function also need to be charged after a period of time, which is not only...

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Problems solved by technology

[0002] At present, there are many products with low-power load devices on the market, such as rice cookers with digital clock hands, electric kettles with digital display tubes, or soybean milk machines, all of which use a single battery to power the low-power load devices. For these The battery used in the product, on the one hand, requires its capacity to be large to meet the power supply demand. On the other hand, due to the limited service life of the battery, it is often necessary to disassemble the machine and replace it with a new battery to work normally after a period of use, and the operation is troublesome; Products with charging function also need to be charged after a period of time, which is not only troublesome to operate, but also consumes power and increases the cost of use. At the same time, if the power grid fluctuates greatly and the charging environment is unstable. It is easy to cause damage to the product itself, reduce the service life, and even cause safety hazards such as electric shock or fire, which is not conducive to the user experience

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