Contactless power transmitting system having overheat protection function and method thereof
First Claim
1. A contactless power transmitting and receiving system, comprising:
- a contactless power transmitting apparatus; and
a contactless power receiving apparatus including a battery cell module and a charging unit to charge the battery cell module with power received from the contactless power transmitting apparatus,the contactless power transmitting apparatus comprising;
a power transmitting unit, comprising a power transmitting coil which transmits a first power or a second power to the contactless power receiving apparatus;
a first signal transmitting unit;
a first signal receiving unit which receives an overheat alarm signal transmitted by the contactless power receiving apparatus; and
a contactless power transmission controlling unit which directs the power transmitting unit to transmit the first power to the contactless power receiving apparatus, and which directs the power transmitting unit to transmit the second power lower than the first power, to the contactless power receiving apparatus if the first signal receiving unit receives the overheat alarm signal to charge the second power in the battery cell module, thereby allowing the battery cell module not to be overheated,the contactless power receiving apparatus comprising;
a contactless power reception controlling unit which detects an overheat of the battery cell module when the charging unit charges the first power in the battery cell module; and
a second signal transmitting unit to transmit the overheat alarm signal to the contactless power transmitting apparatus if the overheat is detected,wherein when the overheat alarm signal is transmitted to the contactless power transmitting apparatus, the contactless power reception controlling unit switches the charging unit into a first power charging mode which allows the charging unit to charge the second power in the battery cell module and to remain without generation of an error.
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Accused Products
Abstract
Disclosed herein are a contactless power transmitting system having an overheat protection function, which protects a battery cell module from damage due to overheating while the battery cell module is being charged, and a method thereof. In the contactless power transmitting system, a contactless power transmitting apparatus transmits a first power to a contactless power receiving apparatus through a power transmitting coil to charge the battery cell module with the first power, and transmits a second power, of lower wattage than the first power, to the contactless power receiving apparatus through the power transmitting coil to charge the battery cell module with the second power if an overheat alarm signal is received from the contactless power receiving apparatus, thereby making it possible to fully charge the battery cell module while preventing overheating of the battery cell module.
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Citations
16 Claims
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1. A contactless power transmitting and receiving system, comprising:
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a contactless power transmitting apparatus; and a contactless power receiving apparatus including a battery cell module and a charging unit to charge the battery cell module with power received from the contactless power transmitting apparatus, the contactless power transmitting apparatus comprising; a power transmitting unit, comprising a power transmitting coil which transmits a first power or a second power to the contactless power receiving apparatus; a first signal transmitting unit; a first signal receiving unit which receives an overheat alarm signal transmitted by the contactless power receiving apparatus; and a contactless power transmission controlling unit which directs the power transmitting unit to transmit the first power to the contactless power receiving apparatus, and which directs the power transmitting unit to transmit the second power lower than the first power, to the contactless power receiving apparatus if the first signal receiving unit receives the overheat alarm signal to charge the second power in the battery cell module, thereby allowing the battery cell module not to be overheated, the contactless power receiving apparatus comprising; a contactless power reception controlling unit which detects an overheat of the battery cell module when the charging unit charges the first power in the battery cell module; and a second signal transmitting unit to transmit the overheat alarm signal to the contactless power transmitting apparatus if the overheat is detected, wherein when the overheat alarm signal is transmitted to the contactless power transmitting apparatus, the contactless power reception controlling unit switches the charging unit into a first power charging mode which allows the charging unit to charge the second power in the battery cell module and to remain without generation of an error. - View Dependent Claims (2, 3)
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4. A contactless power receiving apparatus in a contactless power system, the system comprising a contactless power transmitting apparatus which comprises a first signal transmitting unit and a first signal receiving unit and a contactless power receiving apparatus which comprises a second signal transmitting unit and a second signal receiving unit, the contactless power receiving apparatus comprising:
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a charging apparatus which receives a first power transmitted by a contactless power transmitting apparatus, and which charges a battery cell module with the first power; the second signal transmitting unit which generates an overheat alarm signal, and which transmits the overheat alarm signal to the contactless power transmitting apparatus; and a contactless power reception controlling unit which judges whether or not the battery cell module has been overheated, and which, if it is judged that the battery cell module has been overheated, directs the second signal transmitting unit to generate the overheat alarm signal and to transmit the generated overheat alarm signal to the contactless power transmitting apparatus in case where it is judged that the battery cell module has been overheated and then directs the charging apparatus to receive a second power, of lower wattage than the first power, from the contactless power transmitting apparatus and to charge the battery cell module with the second power, thereby allowing the battery cell module not to be overheated, wherein when the overheat alarm signal is transmitted to the contactless power transmitting apparatus, the contactless power reception controlling unit switches the charging unit into a first power charging mode which allows the charging unit to charge the second power in the battery cell module and to remain without generation of an error. - View Dependent Claims (5, 6, 7, 8)
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9. A contactless power transmitting and receiving method, comprising:
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transmitting, in a contactless power transmitting apparatus, a first power to a contactless power receiving apparatus through a power transmitting coil, the contactless power receiving apparatus including a battery cell module to be recharged and a charging unit to recharge the battery cell module with power received from the contactless power transmitting apparatus; detecting, in the contactless power receiving apparatus, an overheat of the battery cell module when the charging unit charges the first power in the battery cell module and transmitting an overheat alarm signal to the contactless power transmitting apparatus if the overheat is detected; transmitting, from the contactless power transmitting apparatus, a second power lower than the first power, to the contactless power receiving apparatus through the power transmitting coil if an overheat alarm signal is received from the contactless power receiving apparatus to charge the second power in the battery cell module, thereby allowing the battery cell module not to be overheated; and switching the charging unit into a first power charging mode which allows the charging unit to charge the second power in the battery cell module and to remain without generation of an error, when the overheat alarm signal is transmitted to the contactless power transmitting apparatus. - View Dependent Claims (10, 11, 12)
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13. A contactless power receiving method, comprising:
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receiving, in a charging unit, a first power transmitted by a contactless power transmitting apparatus to charge a battery cell module with the first power; judging, in a contactless power reception controlling unit, whether or not the battery cell module has been overheated; transmitting, from the contactless power reception control unit, an overheat alarm signal to the contactless power transmitting apparatus;
switching, in the contactless power reception control unit, a charging unit into a first power charging mode which allows a second power lower than the first power to be charged in the battery cell module; andreceiving, in the charging apparatus, the second power, if it is judged that the battery cell module has been overheated, to charge the second power in the battery cell module, thereby allowing the battery cell module not to be overheated and remaining without generation of an error. - View Dependent Claims (14, 15, 16)
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Specification