Charging device and control method for controlling operations of different modulation modules according to load conditions
First Claim
1. A charging device, comprising:
- an AC/DC converting circuit comprising a switching circuit, wherein during an operation of the switching circuit, the AC/DC converting circuit converts an AC input power into a DC output power and generates plural parameter signals corresponding to the DC output power; and
a main controller electrically connected with the AC/DC converting circuit for controlling the AC/DC converting circuit, wherein the main controller comprises a switch control circuit, a first modulation module and a second modulation module, wherein the first modulation module generates a first control signal to control the switching circuit when the first modulation module is enabled, the second modulation module generates a second control signal to control the switching circuit when the second modulation module is enabled, a first end of the switch control circuit is electrically connected with the switching circuit, a second end of the switch control circuit is electrically connected with the first modulation module and the second modulation module, and the switch control circuit selectively enables the first modulation module or the second modulation module to generate the first control signal or the second control signal to the switching circuit, wherein the operation of the switching circuit according to the second control signal consumes less amount of electric energy than the operation of the switching circuit according to the first control signal,wherein when the switch control circuit is operated in a condition control mode, the switch control circuit judges whether a load condition of the charging device is maintained in or changed to a heavy load condition, a light load condition or a no load condition according to the plural parameter signals and the first control signal or the second control signal, wherein if the switch control circuit judges that the load condition of the charging device is in the heavy load condition, the switch control circuit enables the first modulation module and disables the second modulation module, wherein if the switch control circuit judges that the load condition of the charging device is in the light load condition or the no load condition, the switch control circuit disables the first modulation module and enables the second modulation module.
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Accused Products
Abstract
A charging device and a control method for the charging device are provided. The charging device includes an AC/DC converting circuit and a main controller. The main controller includes a first modulation module and a second modulation module. The operation of the switching circuit controlled by the second modulation module consumes less amount of electric energy than the operation of the switching circuit controlled by the first modulation module. When the charging device is in the heavy load condition, the first modulation module is enabled to control the operation of the switching circuit. When the charging device is in the light load condition or the no load condition, the second modulation module is enabled to control the operation of the switching circuit. Consequently, the power consumption of the charging device in the light load condition or the no load condition is reduced.
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Citations
15 Claims
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1. A charging device, comprising:
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an AC/DC converting circuit comprising a switching circuit, wherein during an operation of the switching circuit, the AC/DC converting circuit converts an AC input power into a DC output power and generates plural parameter signals corresponding to the DC output power; and a main controller electrically connected with the AC/DC converting circuit for controlling the AC/DC converting circuit, wherein the main controller comprises a switch control circuit, a first modulation module and a second modulation module, wherein the first modulation module generates a first control signal to control the switching circuit when the first modulation module is enabled, the second modulation module generates a second control signal to control the switching circuit when the second modulation module is enabled, a first end of the switch control circuit is electrically connected with the switching circuit, a second end of the switch control circuit is electrically connected with the first modulation module and the second modulation module, and the switch control circuit selectively enables the first modulation module or the second modulation module to generate the first control signal or the second control signal to the switching circuit, wherein the operation of the switching circuit according to the second control signal consumes less amount of electric energy than the operation of the switching circuit according to the first control signal, wherein when the switch control circuit is operated in a condition control mode, the switch control circuit judges whether a load condition of the charging device is maintained in or changed to a heavy load condition, a light load condition or a no load condition according to the plural parameter signals and the first control signal or the second control signal, wherein if the switch control circuit judges that the load condition of the charging device is in the heavy load condition, the switch control circuit enables the first modulation module and disables the second modulation module, wherein if the switch control circuit judges that the load condition of the charging device is in the light load condition or the no load condition, the switch control circuit disables the first modulation module and enables the second modulation module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A control method for a charging device, the charging device comprising an AC/DC converting circuit and a main controller, the AC/DC converting circuit comprising a switching circuit, the main controller being electrically connected with the AC/DC converting circuit, the main controller comprising a switch control circuit, a first modulation module and a second modulation module, the first modulation module generating a first control signal to control an operation of the switching circuit when the first modulation module is enabled, the second modulation module generating a second control signal to control the operation of the switching circuit when the second modulation module is enabled, the control method comprising steps of:
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(a) controlling the operation of the switching circuit according to the first control signal or the second control signal, so that the AC/DC converting circuit converts an AC input power into a DC output power and generates plural parameter signals corresponding to the DC output power; (b) allowing the switch control circuit to enter a condition control mode, wherein in the condition control mode, the switch control circuit judges whether a load condition of the charging device is maintained in or changed to a heavy load condition, a light load condition or a no load condition according to the plural parameter signals and the first control signal or the second control signal; and (c) enabling the first modulation module and disabling the second modulation module if the switch control circuit judges that the load condition of the charging device is in the heavy load condition, and disabling the first modulation module and enabling the second modulation module if the switch control circuit judges that the load condition of the charging device is in the light load condition or the no load condition.
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Specification