CN212062756U

CN212062756U - Temperature control's USB plug subassembly

Info

Publication number: CN212062756U
Application number: CN202021115880.4U
Authority: CN
Inventors: 谢鹏
Original assignee: Shenzhen Zhongbang Xingyi Technology Co ltd
Current assignee: Shenzhen Zhongbang Xingyi Technology Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-12-01
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to a temperature-controlled USB plug assembly, which comprises a data line, a circuit board, a metal terminal, a metal plug and a connector shell, wherein a detection circuit structure is arranged on the circuit board; the structure comprises an input end, an output end, a capacitor C1 connected in parallel at two ends of the input end, a main control IC module connected at two ends of a capacitor C1, a resistor NTC and an adjustable resistor RNTC connected in parallel at the output end, wherein the resistor NTC and the adjustable resistor RNTC are connected together in series; a switch MOS tube connected between the input end and the output end, and a capacitor C2 connected in parallel at two ends of the resistance NTC and the adjustable resistance RNTC. When the output end detects that the temperature of the plug is greater than or equal to the set protection temperature, the main control IC module sends an instruction to the switch MOS tube to cut off the current output of the output end, so that zero power output is realized. Thereby completely avoiding the occurrence of unsafe hidden trouble when the user uses the device.

Description

Temperature control's USB plug subassembly

[ technical field ] A method for producing a semiconductor device

The utility model relates to a be used for electronic equipment to connect technical field, especially indicate a USB plug subassembly that is used for inserting a temperature control on establishing cell-phone or computer.

[ background of the invention ]

With the development of large screen of electronic devices, the amount of power consumed by the electronic devices is increasing, so that charging the electronic devices becomes a matter of consideration when consumers use the electronic devices. Meanwhile, the terminal device and the charging device of the USB Type C interface are made to be a charger and a charging data line used when the Type C interface device supplies power and charges. The charging equipment comprises a mobile phone, an intelligent tablet and a notebook computer. The charging data line comprises a data line for transmitting data or a power supply and a USB interface arranged on the data line. When the charging device is used, the USB interface at one end of the data line is connected with the charger, and the USB interface at the other end of the data line is connected with the charged electronic equipment. At the intersection of the charged electronic equipment and the USB interface, the USB interface has no over-temperature and over-current protection in most cases, and even in some cases, the USB interface is solved by using the PTC thermistor. The PTC thermistor increases the resistance value by means of temperature rise, and realizes low voltage output. In the charging process, although the output low voltage of the PTC thermistor can be reduced after the temperature of the plug rises, current still passes through the intersection of the charged electronic equipment and the USB interface when the temperature of the plug rises, so that the interface temperature of the intersection of the electronic equipment such as a mobile phone, a computer or a tablet computer can be continuously raised, the intersection of the charged electronic equipment is seriously damaged or burnt, and even a lithium battery in the equipment explodes, therefore, the potential safety hazard is brought to vast consumers when the plug is used, and the potential safety hazard is usually represented as very high plug temperature and reaches a scalding state.

[ Utility model ] content

In view of this, the present invention provides a temperature controlled USB plug assembly capable of completely avoiding the occurrence of unsafe hidden trouble when the user uses the USB plug assembly.

Therefore, the technical solution of the present invention is to provide a temperature-controlled USB plug assembly, which is used in a mobile phone, an intelligent tablet, a computer for charging or data transmission, and comprises a data line, a circuit board connected to the data line, a plurality of metal terminals welded on the circuit board, a metal plug welded on the circuit board and disposed at the periphery of the metal terminals, and a connector housing installed at the intersection of the metal plug and the circuit board, wherein the circuit board is provided with a detection circuit structure for over-temperature protection or short-circuit protection; the detection circuit structure comprises an input end, an output end, a capacitor C1 connected in parallel at two ends of the input end, a main control IC module connected at two ends of a capacitor C1, a resistor NTC and an adjustable resistor RNTC connected in parallel at the output end, wherein the resistor NTC and the adjustable resistor RNTC are connected together in series; a switch MOS tube connected between the input end and the output end, and a capacitor C2 connected in parallel at two ends of the resistance NTC and the adjustable resistance RNTC.

Further defined, the input terminal comprises an input VBUS terminal and an input GND terminal; the output end comprises an output VBUS end and an output GND end.

Further, the master IC module is formed by an IC with the model number WP 1682.

Further, the switching MOS transistor is formed by a MOS transistor with a model number of WS12P4N 3A.

The utility model has the advantages of: the circuit board is provided with a detection circuit structure for over-temperature protection or short-circuit protection; the detection circuit structure comprises an input end, an output end, a capacitor C1 connected in parallel at two ends of the input end, a main control IC module connected at two ends of a capacitor C1, a resistor NTC and an adjustable resistor RNTC connected in parallel at the output end, wherein the resistor NTC and the adjustable resistor RNTC are connected together in series; a switch MOS tube connected between the input end and the output end, and a capacitor C2 connected in parallel at two ends of the resistance NTC and the adjustable resistance RNTC. When the output end detects that the temperature of the plug is greater than or equal to the set protection temperature, the main control IC module sends an instruction to the switch MOS tube, and the switch MOS tube immediately cuts off the current output of the output end after receiving the instruction, so that the potential safety hazard generated at the charging equipment end due to the fact that the temperature of the intersection of the plug and the electronic equipment is raised again is avoided, namely, the power is no longer supplied to the terminal equipment, and zero-power output is realized. Thereby completely avoiding the occurrence of unsafe hidden trouble when the user uses the device.

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

[ description of the drawings ]

Fig. 1 is a perspective view of a temperature controlled USB plug assembly of the present invention;

fig. 2 is a schematic back view of a temperature controlled USB plug assembly according to the present invention;

fig. 3 is a side schematic view of a temperature controlled USB plug assembly of the present invention;

fig. 4 is a circuit diagram of the over-temperature protection state of the detection circuit structure of the present invention;

fig. 5 is a circuit diagram of the short-circuit protection state of the middle detection circuit structure of the present invention.

[ detailed description ] embodiments

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 5, a temperature-controlled USB plug assembly for use in charging a mobile phone, a smart tablet, a computer or data transmission is described below with reference to an embodiment, and includes a data line, a circuit board 1, a plurality of metal terminals 2, a metal plug 3, and a connector housing.

The circuit board 1 is provided with a detection circuit structure which is mainly used for over-temperature protection or short circuit protection. The detection circuit structure comprises an input end, an output end, a capacitor C1 connected in parallel at two ends of the input end, a main control IC module connected at two ends of a capacitor C1, a resistor NTC and an adjustable resistor RNTC connected in parallel at the output end, wherein the resistor NTC and the adjustable resistor RNTC are connected together in series; a switch MOS tube connected between the input end and the output end, and a capacitor C2 connected in parallel at two ends of the resistance NTC and the adjustable resistance RNTC. The input end comprises an input VBUS end and an input GND end; the output end comprises an output VBUS end and an output GND end. The master control IC module is composed of an IC with the model number WP 1682. The switching MOS tube is composed of an MOS tube with the model number of WS12P4N 3A.

One end of the data line is connected with the charger, the other end of the data line is welded on the circuit board 1, one end of the metal terminal 2 is welded on the circuit board 1, the other end of the metal terminal 2 is arranged on the periphery of the circuit board 1 and is arranged inside the metal plug 3, the main control IC module is welded on the circuit board 1, the connector shell is arranged on the periphery of the intersection of the inner end of the metal plug 3 and the data line, and the circuit board 1 is arranged inside the connector shell. The data line, the main control IC module and the metal terminal 2 are respectively welded on the circuit board 1.

Referring to fig. 4, firstly, a temperature set point protected by the main control IC module is set by adjusting the resistance of the adjustable resistor RNTC, when the NTC is detected and the temperature of the plug is greater than or equal to the temperature set point, the main control IC module releases an instruction to the switching MOS transistor through the VOUT interface, and after the switching MOS transistor receives the instruction, the switching MOS transistor is automatically turned off, so that the input VBUS terminal and the output VBUS terminal are turned off, and the output terminal is turned off. The potential safety hazard generated at the charging equipment end due to the fact that the temperature of the intersection of the plug and the electronic equipment is raised again is avoided, namely, the power is no longer supplied to the terminal equipment, and zero power output is achieved. Thereby completely avoiding the occurrence of unsafe hidden trouble when the user uses the device.

Referring to fig. 5, when the resistance NTC is detected, a short circuit occurs between the output VBUS terminal and the output GND terminal, the main control IC module releases a command to the switching MOS transistor through the VOUT interface terminal, and after the switching MOS transistor receives the command, the switching MOS transistor is automatically turned off, so that the input VBUS terminal and the output VBUS terminal are turned off, and the output terminal is turned off. The potential safety hazard generated at the charging equipment end due to the fact that the charging equipment is arranged is avoided.

In summary, the circuit board 1 is provided with a detection circuit structure for over-temperature protection or short-circuit protection; the detection circuit structure comprises an input end, an output end, a capacitor C1 connected in parallel at two ends of the input end, a main control IC module connected at two ends of a capacitor C1, a resistor NTC and an adjustable resistor RNTC connected in parallel at the output end, wherein the resistor NTC and the adjustable resistor RNTC are connected together in series; a switch MOS tube connected between the input end and the output end, and a capacitor C2 connected in parallel at two ends of the resistance NTC and the adjustable resistance RNTC. When the output end detects that the temperature of the plug is greater than or equal to the set protection temperature, the main control IC module sends an instruction to the switch MOS tube, and the switch MOS tube immediately cuts off the current output of the output end after receiving the instruction, so that the potential safety hazard generated at the charging equipment end due to the fact that the temperature of the intersection of the plug and the electronic equipment is raised again is avoided, namely, the power is no longer supplied to the terminal equipment, and zero-power output is realized. Thereby completely avoiding the occurrence of unsafe hidden trouble when the user uses the device.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, without thereby limiting the scope of the invention. Any modification, equivalent replacement and improvement made by those skilled in the art without departing from the scope and spirit of the present invention should be within the scope of the claims of the present invention.

Claims

1. A temperature-controlled USB plug component is used for charging mobile phones, intelligent panels and computers or transmitting data and comprises a data line, a circuit board connected with the data line, a plurality of metal terminals welded on the circuit board, metal plugs welded on the circuit board and arranged at the periphery of the metal terminals, and a connector shell arranged at the intersection of the metal plugs and the circuit board; the method is characterized in that: the circuit board is provided with a detection circuit structure for over-temperature protection or short-circuit protection; the detection circuit structure comprises an input end, an output end, a capacitor C1 connected in parallel at two ends of the input end, a main control IC module connected at two ends of a capacitor C1, a resistor NTC and an adjustable resistor RNTC connected in parallel at the output end, wherein the resistor NTC and the adjustable resistor RNTC are connected together in series; a switch MOS tube connected between the input end and the output end, and a capacitor C2 connected in parallel at two ends of the resistance NTC and the adjustable resistance RNTC.

2. The temperature-controlled USB plug assembly of claim 1, wherein: the input end comprises an input VBUS end and an input GND end; the output end comprises an output VBUS end and an output GND end.

3. The temperature-controlled USB plug assembly of claim 1, wherein: the master control IC module is composed of an IC with the model number WP 1682.

4. The temperature-controlled USB plug assembly of claim 1, wherein: the switching MOS tube is composed of an MOS tube with the model number of WS12P4N 3A.