DIRECT CURRENT CONNECTOR, ALTERNATING CURRENT/DIRECT CURRENT INPUT DEVICE, AND ALTERNATING CURRENT/DIRECT CURRENT INPUT SYSTEM

• US 20190313546A1
• Filed: 06/21/2019
• Published: 10/10/2019
• Est. Priority Date: 12/27/2016
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: ZHANG, Guoqing, WANG, Jiangtao, GAO, Liang
• Granted Patent: US 11,096,303 B2
• Time in Patent Office: Days
• CPC Class Codes: H01R 13/04 Pins or blades for co-operation with sockets
• CPC Class Codes: H01R 13/10 Sockets for co-operation with pins or blades
• CPC Class Codes: H01R 13/6485 Electrostatic discharge protection in general H05F1/00, for electric apparatus H05K9/0067
• CPC Class Codes: H01R 13/71 Contact members of coupling parts operating as switch , e.g. linear or rotational movement required after mechanical engagement of coupling part to establish electrical connection
• CPC Class Codes: H01R 24/70 with additional earth or shield contacts
• CPC Class Codes: H02M 3/33592 having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
• CPC Class Codes: H05K 7/1455 Coding for prevention of wrong insertion

Abstract

An alternating current/direct current input device includes an appliance input socket and an information and communications technology (ICT) device. The ICT device is powered by the appliance input socket. The appliance input socket includes a ground contact, a positive electrode contact, a negative electrode contact, and a signal switch. A contact depth of the signal switch in the appliance input socket is less than a contact depth of the positive electrode contact or the negative electrode contact in the appliance input socket. The signal switch is configured to generate a control signal when a direct current connector is separated from the appliance input socket. The control signal can be used to enable the ICT device to disconnect the appliance input socket from a conductive electrode of the direct current connector after the ICT device enters a no load state.

Claims

1. An alternating current/direct current input device, comprising:

an appliance input socket; and

an information and communications technology (ICT) device;

wherein the ICT device is powered by the appliance input socket;

wherein the appliance input socket comprises a ground contact, a positive electrode contact, a negative electrode contact, and a signal switch;

wherein a contact depth of the signal switch in the appliance input socket is less than a contact depth of the positive electrode contact or the negative electrode contact in the appliance input socket; and

wherein the signal switch is configured to generate a control signal when a connector is separated from the appliance input socket, wherein the control signal is configured to enable the ICT device to disconnect the appliance input socket from a conductive electrode of the connector after the ICT device enters a no load state when the connector is a direct current connector.

2. The device according to claim 1, wherein the signal switch is further configured to:

when the connector is a direct current connector, generate the control signal when the direct current connector is separated from the appliance input socket, wherein the control signal is configured to enable a load current of the ICT device to be zero before the appliance input socket is disconnected from the conductive electrode of the direct current connector.

3. The device according to claim 1, wherein the signal switch is further configured to:

when the connector is a direct current connector, generate the control signal when the direct current connector is separated from the appliance input socket, wherein the control signal is configured to enable a load current of the ICT device to be close to zero before the appliance input socket is disconnected from the conductive electrode of the direct current connector.

4. The device according to claim 2, wherein a control circuit and a transformer coil are disposed inside the ICT device;

wherein the control circuit comprises a control unit and a semiconductor switch;

wherein the control unit is connected to two conductive electrodes of the appliance input socket and is connected to the signal switch;

wherein a first end and a second end of the semiconductor switch are connected to a connection line between a conductive electrode of the appliance input socket and the transformer coil, and a third end of the semiconductor switch is connected to the control unit; and

wherein the control unit is configured to;

after the control signal generated by the signal switch is received, control the semiconductor switch to enter a disconnected state such that the ICT device disconnects the appliance input socket from the conductive electrodes of the direct current connector after the ICT device enters a no load state.

5. The device according to claim 4, wherein the semiconductor switch is a transistor.

6. The device according to claim 4, wherein the semiconductor switch is a combination of at least two transistors.

7. The device according to claim 4, wherein the control circuit further comprises a start resistor and a relay;

wherein the start resistor is connected to the relay in parallel, and is connected to a connection line between a conductive electrode of the appliance input socket and the transformer coil, and the control unit is connected to the relay; and

wherein the control unit is further configured to;

after power input is detected, control the relay to be connected and to enter a normal working state.

8. The device according to claim 1, wherein the signal switch is further configured to, when the connector is an alternating current connector, remain in an initial state when the alternating current connector is inserted into the appliance input socket.

9. The device according to claim 8, wherein the alternating current connector is a standard alternating current connector IEC 60320-C13.

10. The device according to claim 8, wherein the alternating current connector is a standard alternating current connector IEC 60320-C19.

11. The device according to claim 4, wherein the control unit is connected to the two conductive electrodes of the appliance input socket via a power conversion module.

12. A direct current connector, comprising:

a ground contact;

a positive electrode contact;

a negative electrode contact; and

a signal contact;

wherein the signal contact is configured to;

change a state when the direct current connector is separated from an appliance input socket, and trigger a signal switch K1 on the appliance input socket to generate a control signal, wherein the control signal is configured to enable an information and communications technology (ICT) device powered by the appliance input socket to disconnect the appliance input socket from a conductive electrode of the direct current connector after the ICT device enters a no load state.

13. The direct current connector according to claim 12, wherein the signal contact is a fixed contact, so as to be differentiated from an alternating current connector in appearance.

14. An alternating current/direct current input system, comprising:

a connector;

an appliance input socket; and

an information and communications technology (ICT) device;

wherein the ICT device is powered by the appliance input socket;

wherein the connector is;

a direct current connector comprising a ground contact, a first positive electrode contact, a first negative electrode contact, and a signal contact, wherein the signal contact is configured to;

change a state when the direct current connector is separated from the appliance input socket, and trigger the signal switch on the appliance input socket to generate a control signal, wherein the control signal is configured to enable the ICT device to disconnect the appliance input socket from a conductive electrode of the direct current connector after the ICT device enters a no load state;

or

an alternating current connector;

wherein the appliance input socket comprises a ground contact, a second positive electrode contact, a second negative electrode contact, and a signal switch;

wherein the signal switch is configured to;

when the connector is a direct current connector, generate the control signal when the direct current connector is separated from the appliance input socket, wherein the control signal is configured to enable the ICT device to disconnect the appliance input socket from the conductive electrode of the direct current connector after the ICT device enters a no load state.

15. The system according to claim 14, wherein the connector is an alternating current connector, and the alternating current connector is a standard alternating current connector IEC 60320-C13.16.

16. The system according to claim 14, wherein the connector is an alternating current connector, and the alternating current connector is a standard alternating current connector IEC 60320-C19.