CN112350712A

CN112350712A - Blind-mate circuit, multi-interface electronic equipment and power supply system

Info

Publication number: CN112350712A
Application number: CN202011087427.1A
Authority: CN
Inventors: 邹林; 杨信
Original assignee: Shenzhen Jiarun Original Xinxian Technology Co ltd
Current assignee: Shenzhen Jiarun Original Xinxian Technology Co ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-02-09

Abstract

The invention discloses a blind-mate circuit, multi-interface electronic equipment and a power supply system, wherein the blind-mate circuit comprises a first interface, a second interface, a first switch module and a second switch module, wherein the first input end of the first switch module is connected with the first interface, the second input end of the first switch module is connected with the second interface, the first controlled end of the second switch module is connected with the first output end of the first switch module, the second controlled end of the second switch module is connected with the second output end of the first switch module, the first input end of the second switch module is connected with the first interface, the first output end of the second switch module is connected with the input end of an equipment power supply module, the second input end of the second switch module is connected with the second interface, and the second output end of the second switch module is connected with the input end of the equipment power supply module. According to the technical scheme, blind insertion is achieved, and the use experience of the user is effectively improved.

Description

Blind-mate circuit, multi-interface electronic equipment and power supply system

Technical Field

The invention relates to the technical field of blind plugging, in particular to a blind plugging circuit and multi-interface electronic equipment.

Background

With the update of electronic products, many electronic products have two or more interfaces, in order to pursue the portability of electronic products to improve user experience, several types of portable electronic products with different interfaces are available on the market, for example, a portable electronic product with a full-function interface and a common power supply port, because two interfaces with different standards exist, a user needs to distinguish the type of the interface to correctly access the corresponding interface, if an interface is accessed incorrectly, the connected device or electronic product cannot normally work, and potential safety hazards exist, which brings extremely poor experience to the user.

Disclosure of Invention

The invention mainly aims to provide a blind-mate circuit and multi-interface electronic equipment. The technical problem of misconnection of the electronic product interface is solved.

In order to achieve the above object, the present invention provides a blind-insertion circuit, including:

the first interface is a full-function bidirectional interface and is used for accessing a first voltage;

the second interface is a full-function bidirectional interface and is used for accessing a second voltage;

the first switch module is provided with a first input end, a second input end, a first output end and a second output end, the first input end of the first switch module is connected with the first interface, and the second input end of the first switch module is connected with the second interface; the first control circuit is used for outputting a first control signal when the voltage value of the first voltage is greater than the voltage value of the second voltage; when the voltage value of the first voltage is smaller than that of the second voltage, outputting a second control signal;

the first controlled end of the second switch module is connected with the first output end of the first switch module, the second controlled end of the second switch module is connected with the second output end of the first switch module, the first input end of the second switch module is connected with the first interface, the first output end of the second switch module is connected with the input end of the equipment power supply module, the second input end of the second switch module is connected with the second interface, and the second output end of the second switch module is connected with the input end of the equipment power supply module; the first interface is used for being connected with the equipment power supply module; and when a second control signal is received, the passage between the second interface and the equipment power supply module is conducted.

Optionally, the first interface is any one of a USB-a full-function bidirectional interface, a USB-B full-function bidirectional interface, and a USB-C full-function bidirectional interface.

Optionally, the blind-mating circuit further includes: a first input end of the power supply comparison module is connected with the first interface, a first output end of the power supply comparison module is connected with a first controlled end of the second switch module, a second input end of the power supply comparison module is connected with the second interface, and a second output end of the power supply comparison module is connected with a second controlled end of the second switch module;

the power supply comparison module is used for comparing the voltage value of the first voltage with the voltage value of the second voltage and outputting a first turn-off signal when the voltage value of the first voltage is smaller than the voltage value of the second voltage; when the voltage value of the first voltage is larger than that of the second voltage, outputting a first turn-off signal;

the second switch module is used for switching off a path between the first interface and the equipment power supply module when receiving a first switching-off signal; and when a second turn-off signal is received, turning off a path between the second interface and the equipment power supply module.

Optionally, the blind-mating circuit further includes: the power output module is provided with a first input end, a second input end, a first output end, a second output end, a first controlled end and a second controlled end, the first input end of the power output module is connected with the output end of the equipment power module, the first output end of the power output module is connected with the first interface, the second input end of the power output module is connected with the output end of the equipment power module, and the second output end of the power output module is connected with the second interface;

and the power output module is used for outputting power.

Optionally, the blind-mating circuit further includes: the control module is provided with a first input control end, a second input control end, a first output control end, a second output control end, a first detection end and a second detection end, the first input control end of the control module is connected with the first controlled end of the second switch module, the second input control end of the control module is connected with the second controlled end of the second switch module, the first output control end of the control module is connected with the first controlled end of the power output module, and the second output control end of the control module is connected with the second controlled end of the power output module; a first detection end of the control module is connected with the first interface, and a second detection end of the control module is connected with the second interface;

the first interface is used for acquiring a first detection signal through a detection pin of the first interface;

the second interface is used for acquiring a second detection signal through a detection pin of the second interface;

the control module is used for outputting a corresponding input conducting signal or output conducting signal according to the first detection signal or the second detection signal;

the second switch module is used for conducting a corresponding path according to the input conducting signal;

and the power output module is used for conducting the corresponding channel according to the output conducting signal.

In order to achieve the above object, the present invention further provides a multi-interface electronic device, where the multi-interface electronic device includes any one of the blind-mate circuit and the device power module, an output end of the second switch module of the blind-mate circuit is an output end of the blind-mate circuit, an input end of the power output module of the blind-mate circuit is an input end of the blind-mate circuit, an output end of the blind-mate circuit is connected to an input end of the device power module, and an input end of the blind-mate circuit is connected to an output end of the device power module.

Optionally, the device power module includes: the input end of the conversion module is connected with the output end of the second switch module, and the output end of the conversion module is connected with the input end of the power output module; the conversion module is used for converting the voltage of the first voltage accessed by the first interface and outputting the converted voltage to the power output module of the blind-mate circuit, or converting the voltage of the second voltage accessed by the second interface and outputting the converted voltage to the power output module of the blind-mate circuit. Optionally, the device power supply module further includes: the input end of the storage battery is connected with the output end of the second switch module, and the output end of the storage battery is connected with the output end of the power output module.

In order to achieve the above object, the present invention further provides a power supply system, which includes the blind-mate circuit of any one of the above items and the multi-interface electronic device of any one of the above items.

The invention accesses external equipment through two full-function bidirectional interfaces of a first interface and a second interface, the first interface and the second interface detect the equipment through internal detection pins and output corresponding detection signals to a control module, the control module outputs corresponding control signals to a second switch module and a power output module after receiving the detection signals so as to control the corresponding passage of the second switch module to be switched on or switched off and control the corresponding passage of the power output module to be switched on or switched off, and by combining the first interface, the second switch module, the control module, the power output module and the equipment power module, the interface can be accessed randomly without distinguishing the interface type, thereby solving the technical problem of the interface misconnection of electronic products, namely realizing blind plugging, and in addition, realizing the power supply of the accessed equipment through the equipment power module, or the external power supply device supplies power to the device power module and the device accessed by the other interface through one interface, so that the endurance time is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the structures shown in the drawings without creative efforts for those skilled in the art.

Fig. 1 is a functional block diagram of a blind-mate circuit, a multi-interface electronic device and a power supply system according to an embodiment of the present invention;

FIG. 2 is a specific circuit diagram of a blind-mate circuit, a multi-interface electronic device and a power supply system according to an embodiment of the present invention;

FIG. 3 is a specific circuit diagram of another embodiment of a blind-mate circuit, a multi-interface electronic device and a power supply system according to the present invention;

FIG. 4 is a specific circuit diagram of another embodiment of a blind-mate circuit, a multi-interface electronic device and a power supply system according to the present invention;

FIG. 5 is a specific circuit diagram of another embodiment of a blind-mate circuit, a multi-interface electronic device and a power supply system according to the present invention;

the reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of designing "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, an element defined as "a first" or "a second" can include at least one of the element either explicitly or implicitly. In addition, the technical solutions in the embodiments may be combined with each other, but must be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is no longer within the protection scope of the present invention.

The invention provides a blind-mate circuit for solving the problem of wrong connection of an electronic product interface, which is used for the blind-mate circuit and electronic equipment with multiple interfaces.

Referring to fig. 1, in an embodiment of the present invention, the blind-mate circuit includes a first interface 10, a second interface 20, a first switch module 40 and a second switch module 50, the first switch module 40 having a first input terminal, a second input terminal, a first output terminal and a second output terminal, the second switch module 50 having a first controlled terminal, a second controlled terminal, a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal of the first switch module 40 being connected to the first interface 10, the second input terminal of the first switch module 40 being connected to the second interface 20, the first controlled terminal of the second switch module 50 being connected to the first output terminal of the first switch module 40, the second controlled terminal of the second switch module 50 being connected to the second output terminal of the first switch module 40, the first input terminal of the second switch module 50 being connected to the first interface 10, the first output terminal of the second switch module 50 being connected to the input terminal of the equipment power module 30, a second input of the second switch module 50 is connected to the second interface 20, and a second output of the second switch module 50 is connected to an input of the device power module 30.

The first interface 10 is a full-function bidirectional interface, and the first interface 10 is used for receiving a first voltage V1. The second interface 20 is a fully functional bi-directional interface for accessing the second voltage V2. The first switch module 40 outputs the first control signal when the voltage value of the first voltage V1 is greater than the voltage value of the second voltage V2, and outputs the second control signal when the voltage value of the first voltage V1 is less than the voltage value of the second voltage V2. When receiving the first control signal, the second switch module 50 switches on a path between the first interface 10 and the device power module 30; when the second control signal is received, the path between the second interface 20 and the device power supply module 30 is conducted.

The first interface 10, the second interface 20, the first switch module 40 and the second switch module 50 can be arbitrarily accessed without distinguishing the interface type, so that the technical problem of interface misconnection of electronic products is solved.

The invention accesses external equipment through two full-function bidirectional interfaces of a first interface 10 and a second interface 20, the first interface 10 and the second interface 20 detect the equipment through internal detection pins and output corresponding detection signals to a control module 80, the control module 80 outputs corresponding control signals to a second switch module 50 and a power output module 70 after receiving the detection signals so as to control the conduction or the closing of a corresponding path of the second switch module 50 and control the conduction or the closing of a corresponding path of the power output module 70, and by combining the first interface 10, the second interface 20, the second switch module 50, the power output module 70, the control module 80 and the equipment power module 30, the interfaces can be accessed arbitrarily without distinguishing the interface types, thereby solving the technical problem of the misconnection of the interfaces of electronic products, namely realizing blind plugging, and besides, supplying power to the accessed equipment through the equipment power module can be realized, or the external power supply device supplies power to the device power module and the device accessed by the other interface through one interface, so that the endurance time is prolonged.

In an embodiment, referring to fig. 2, the first switch module 40 and the second switch module 50 may be composed of switch tubes, and the first switch module 40 includes a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a fourth switch tube Q4, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4; the second switch module 50 includes a fifth switch tube Q5, a sixth switch tube Q6, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10, wherein the first end of the first switch tube Q1, the first end of the second switch tube Q2, and the second end of the first resistor R1 are respectively connected to the second end of the second resistor R2, the second end of the first switch tube Q1, the second end of the second switch tube Q2, and the first end of the first resistor R1 are respectively connected to the first end of the second resistor R2, the third end of the first switch tube Q1 is connected to the first interface 10, and the third end of the second switch tube Q2 is connected to the device power module 30. A first end of a third switching tube Q3, a first end of a fourth switching tube Q4 and a second end of a third resistor R3 are respectively connected with a second end of a fourth resistor R4, a second end of the third switching tube Q3, a second end of a fourth switching tube Q4 and a first end of a third resistor R3 are respectively connected with a first end of a fourth resistor R4, a third end of the third switching tube Q3 is connected with the equipment power module 30, a third end of the fourth switching tube Q4 is connected with the second interface 20, a first end of a fifth switching tube Q5, a fourth end of a fifth switching tube Q5, a first end of a sixth switching tube Q6, a fourth end of a sixth switching tube Q6, a first end of a seventh resistor R7 and a second end of an eighth resistor R8 are all grounded, a second end of the fifth switching tube Q5, a third end of the sixth switching tube Q6, a third end of a ninth resistor R9 and a tenth end of a fifth switching tube Q5, a second end of a ninth resistor R9 are respectively connected with a first end of a tenth switching tube Q57323 and a tenth switching tube Q10, A first end of a second switching tube Q2 and a second end of a first resistor R1 are respectively connected with a second end of a second resistor R2, a fifth end of a fifth switching tube Q5, a first end of a sixth switching tube Q6 and a second end of a fifth resistor R5 are respectively connected with a first end of a sixth resistor R6, a sixth end of a fifth switching tube Q5, a first end of a third switching tube Q3, a first end of a fourth switching tube Q4 and a second end of a third resistor R3 are respectively connected with a second end of a fourth resistor R4, a second end of a sixth switching tube Q6 and a first end of an eighth resistor R8 are respectively connected with a first end of a ninth resistor R9, a fifth section of a sixth switching tube Q6 and a second end of a sixth resistor R6 are respectively connected with a second end of a seventh resistor R7, a first end of a fifth resistor R5 is connected with a first interface 10, and a second end of a tenth resistor R10 is connected with a second interface 20.

In the embodiment, Q1, Q2, Q3 and Q4 are P-MOS transistors and have the same turn-on voltage, Q5 and Q6 are N-MOS transistors and have the same turn-on voltage, the first interface 10 is connected to the first voltage V1, and the second interface 20 is not connected at all.

The first interface 10 is connected to a first voltage V1, the second interface 20 is left empty, the first voltage V1 pulls the fifth terminal G2 of the Q5 to a high voltage through R5, according to the NMOS tube conduction characteristic, that is, V (gs) is greater than V (th), because the fourth terminal S2 of the Q6 is grounded, the voltage difference between the fifth terminal and the fourth terminal of the Q5 is greater than the turn-on voltage, the third terminal D2 of the Q5 is grounded with the fourth terminal S2 in a conduction manner, so the first terminals of the Q1 and the Q2 connected thereto are pulled down to ground, according to the PMOS tube conduction characteristic, that is, V (gs) is less than V (th), the voltage differences between the first terminal G and the second terminal S of the Q1 and the Q2 are both lower than the turn-on voltage, the Q1 and the Q2 are turned on, and the path between the first interface 10 and the equipment power module 30 is turned on. At this time, the first voltage V1 may enter the device power module through Q1 and Q2, powering the internal system and the battery.

In the second case, since the blind-mate circuit in this embodiment is a symmetrical circuit, the operation process refers to the first case, that is, when the first interface 10 is idle, the second interface 20 is connected to the second voltage V2, the second voltage V2 pulls up the second terminal G1 of the Q5 through R10, the first terminal and the sixth terminal of the Q5 are conducted to ground, so the first terminals of the controlled terminals of Q3 and Q4 are pulled down to ground, the Q3 is conducted with Q4, and the V2 can enter the device power module through Q3 and Q4 to supply power to the internal system and the storage battery.

Optionally, the Q1, Q2, Q3, Q4, Q5, and Q6 switching tubes may be other electronic switches, or MOS tubes, IGBTs, triodes, and the like.

Referring to FIG. 1, in one embodiment, the first interface 10 is any one of a USB-A full function bi-directional interface, a USB-B full function bi-directional interface, and a USB-C full function bi-directional interface;

the second interface 20 is any one of a USB-a full-function bidirectional interface, a USB-B full-function bidirectional interface, and a USB-C full-function bidirectional interface;

specifically, the first interface 10 of the blind-mate circuit is a full-function interface, and the second interface 20 of the blind-mate circuit is a full-function interface, that is, the first interface 10 and the second interface 20 can be implemented as a power supply interface or a charging interface, and have data transmission capability, thereby improving convenience.

In this embodiment, the first interface and the second interface are illustrated by a TYPE-C full-function bidirectional interface.

Alternatively, the first interface 10 or the second interface 20 may be any one of a USB-a interface, a USB-B interface, a USB-C interface, or other fully functional bidirectional interface types, which are not limited herein.

Referring to fig. 3, in an embodiment, the blind-mate circuit further includes a power comparison module 60, the power comparison module 60 has a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal of the power comparison module 60 is connected to the first interface 10, the first output terminal of the power comparison module 60 is connected to the first controlled terminal of the second switch module 50, the second input terminal of the power comparison module 60 is connected to the second interface 20, and the second output terminal of the power comparison module 60 is connected to the second controlled terminal of the second switch module 50.

The power comparison module 60 outputs a first turn-off signal when the voltage value of the first voltage V1 is smaller than the voltage value of the second voltage V2, and outputs a second turn-off signal when the voltage value of the first voltage V1 is greater than the voltage value of the second voltage V2. The second switching module 50 turns off a path between the first interface 10 and the input terminal of the device power supply module 30 when receiving the first off signal, and turns off a path between the second interface 20 and the input terminal of the device power supply module 30 when receiving the second off signal. Through the power supply comparison module, the high voltage can be prevented from flowing backward to the low-voltage power supply end, the accessed equipment is effectively protected, and the safety is improved.

In an embodiment, referring to fig. 3, the power comparing module 60 may be composed of switching tubes, the power comparing module 60 includes a seventh switching tube Q7, an eighth switching tube Q8, a ninth switching tube Q9, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, and a fourteenth resistor R14, a first end of the seventh switching tube Q7, a second end of the seventh switching tube Q7, a first end of the thirteenth resistor R13, and a second end of the twelfth resistor R12 are all grounded, a second end of the seventh switching tube Q7, and a third end of the ninth switching tube Q9 are respectively connected to a first end of the twelfth resistor R12, a third end of the seventh switching tube Q7 is connected to a third end of the sixth switching tube Q6, a fifth end of the seventh switching tube Q635, a first end of the eighth switching tube Q8, a second end of the thirteenth resistor Q13, a sixth end of the seventh switching tube Q599, a sixth end of the eighth switching tube Q6, the third end of the eighth switch tube Q8 is connected to the first interface 10, the first end of the ninth switch tube Q9 is connected to the second interface 20, the second end of the ninth switch tube Q9 is connected to the second end of the eleventh resistor R11, the first end of the eleventh resistor R11 is connected to the first interface 10, and the second end of the fourteenth resistor R14 is connected to the second interface 20.

In this embodiment, the Q7 switch is an N-MOS transistor similar to Q5 and Q6, i.e., each parameter, especially the turn-on voltage, is the same, and Q8 and Q9 are PNP transistors, i.e., each parameter is the same as the turn-on voltage.

The first interface 10 is connected with a first voltage V1, the second interface 20 is connected with a second voltage V2, if the voltage value of V1 is smaller than that of V2, the first end of Q9 is connected with V2, the second end of Q9 is connected with V1 through R11, and according to the conduction condition of the PNP tube, namely that U (E) is larger than U (B), because V1 is smaller than V2, the first end of Q9 is conducted with the third end. Since the second end of the Q7 is connected with the third end of the Q9, the G1 pole of the second end of the Q7 is pulled high, the S1 pole of the first end of the Q7 is grounded, the conducting condition is met, and the S1 pole of the first end of the Q7 and the D1 pole of the sixth end are conducted and grounded; the fifth terminal G2 of the Q5 is pulled down to the ground, the third terminal and the fourth terminal of the Q5 are turned off, the first terminal of the controlled terminal of the connected Q1 and Q2 is not pulled to the ground, the on-condition of the Q1 and Q2 is not met, the Q1 and the Q2 are turned off, the path between the first interface 10 and the device power module 30 is turned off, meanwhile, the V2 pulls up the second terminal G1 of the Q5 through the R10, the first terminal of the Q5 is connected with the sixth terminal to the ground, so the first terminals of the controlled terminals of the Q3 and the Q4 are pulled down to the ground, the Q3 is connected with the Q4, and the V2 enters the device power module through the Q3 and the Q4 to supply power to the internal system and the storage battery.

In the second case, since the blind-mate circuit in this embodiment is a symmetrical circuit, the operation process refers to the first case, that is, when the voltage value of V1 is greater than the voltage value of V2, Q3 and Q4 are turned off, Q1 and Q2 are turned on, and V1 enters the device power module through Q1 and Q2 to supply power to the internal system and the storage battery. So both can use the high voltage power supply to improve charge efficiency, can prevent again that high voltage external power source from flowing backward to low voltage external power source, the condition of damage external power source appears, has improved the security.

Optionally, the Q7, Q8, and Q9 switch tubes may be other electronic switches, or MOS tubes, IGBT tubes, triodes, and the like, and in practical application, an appropriate switch tube may be selected according to practical requirements, which is not limited herein.

Referring to fig. 4, in an embodiment, the blind-mate circuit further includes a power output module 70, where the power output module 70 has a first input end, a second input end, a first output end, a second output end, a first controlled end and a second controlled end, the first input end of the power output module 70 is connected to the output end of the device power module 30, the first output end of the power output module 70 is connected to the first interface 10, the second input end of the power output module 70 is connected to the output end of the device power module 30, and the second output end of the power output module 70 is connected to the second interface 20.

The power output module 70 is configured to output power.

In an embodiment, referring to fig. 4, the power output module 70 includes a tenth switch Q10, an eleventh switch Q11, a twelfth switch Q12, a thirteenth switch Q13, a fourteenth switch Q14, a fifteenth switch Q15, a sixteenth switch Q16, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, and a twenty-fourth resistor R24, a first end of the tenth switch Q10, a first end of the eleventh switch Q11, a first end of the twelfth switch Q11, a second end of the fifteenth resistor R11, a second end of the sixteenth resistor R11, and a second end of the fifteenth resistor R11 are respectively connected to a first end of the seventeenth resistor R11, a second end of the fifteenth switch Q11 and a fifteenth end of the sixteenth switch Q11 are respectively connected to a second end of the sixteenth resistor R11, a third terminal of a tenth switching tube Q10 is connected with the output terminal of the equipment power module 30, a third terminal of an eleventh switching tube Q11 is connected with the first interface 10, a second terminal of a twelfth switching tube 12 is connected with a first terminal of an eighteenth resistor R18, a third terminal of a twelfth switching tube Q12 is connected with a second terminal of a first switching tube Q1, a first terminal of a thirteenth switching tube Q13, a first terminal of a fourteenth switching tube Q14, a first terminal of a fifteenth switching tube Q15, a second terminal of a twentieth resistor R20, a second terminal of a twenty-first resistor R21 are respectively connected with a first terminal of a twenty-second resistor R22, a second terminal of a thirteenth switching tube Q13, a second terminal of a fourteenth switching tube Q14, a first terminal of a twentieth resistor R20 are respectively connected with a first terminal of an eleventh resistor R11, a third terminal of a thirteenth switching tube Q13 is connected with a second interface 20, and a fourteenth switching tube Q14 is connected with the output terminal of the equipment power module 30, the second end of the fifteenth switch tube Q15 is connected to the second end of the twenty-third resistor R23, the third end of the fifteenth switch tube Q15 is connected to the second end of the third switch tube Q3, the second end of the eighteenth resistor R18 is connected to the first end of the first switch tube Q1, the first end of the nineteenth resistor R19 is grounded, the second end of the nineteenth resistor R19 is connected to the first interface 10, the first end of the twenty-third resistor R23 is connected to the first end of the third switch tube Q3, the first end of the twenty-fourth resistor R24 is connected to the second interface 20, and the second end of the twenty-fourth resistor R24 is grounded.

Referring to fig. 4, in an embodiment, the blind-mate circuit further includes a control module 80, the control module 80 has a first input control terminal, a second input control terminal, a first output control terminal, a second output control terminal, a first detection terminal and a second detection terminal, the first input control terminal of the control module 80 is connected to the first controlled terminal of the second switch module 50, the second input control terminal of the control module 80 is connected to the second controlled terminal of the second switch module 50, the first output control terminal of the control module 80 is connected to the first controlled terminal of the power output module 70, the second output control terminal of the control module 80 is connected to the second controlled terminal of the power output module 70, the first detection terminal of the control module 80 is connected to the first interface 10, and the second detection terminal of the control module 80 is connected to the second interface 20.

The first interface 10 obtains a first detection signal through a detection pin of the first interface 10, and the second interface 20 obtains a second detection signal through a detection pin of the second interface 20. The control module 80 is configured to receive the first detection signal and the second detection signal, when a voltage of the first detection signal is equal to a voltage of the second detection signal, that is, a voltage of the first device is equal to the second voltage or a voltage of the second device is equal to the first voltage, the control module 80 outputs the first input turn-on signal or the second input turn-on signal, and when the voltage of the first detection signal is less than the voltage of the second detection signal, that is, the voltage of the first device is less than the second voltage, the control module 80 outputs the first output turn-on signal, and when the voltage of the second detection signal is greater than the voltage of the first detection signal, that is, the voltage of the second device is less than the first voltage, the control module 80 outputs the second output turn-on signal. The second switch module 50 switches on a path between the first interface 10 and the device power module 30 when receiving the first input on signal, and switches on a path between the second interface 20 and the device power module 30 when receiving the second input on signal. The power output module 70 switches on the path between the device power module 30 and the first interface 10 when receiving the first output on signal, and switches on the path between the device power module 30 and the second interface 20 when receiving the second output on signal. Through the power output module 70 and the control module 80, the charging action between different devices with the same voltage standard can be realized, and the cruising ability is prolonged.

In an embodiment, referring to fig. 4, the control module 80 includes a main control chip U1, a first conducting element D1, and a second conducting element D2. A first input control end of the control module 80 is a first input control pin PASS1 of the main control chip U1, a second input control end of the control module 80 is a second input control pin PASS2 of the main control chip U1, a first output control end of the control module 80 is a first output control pin EN1 of the main control chip U1, a second output control end of the control module 80 is a second output control pin EN2 of the main control chip U6327, a first detection end of the control module 80 is a first detection pin CHT1 of the main control chip U1, a second detection end of the control module 80 is a second detection pin CHT2 of the main control chip U1, a first input control pin PASS1 of the main control chip U1 is connected to a first end of the first switch tube Q1, a second input control pin PASS2 of the main control chip U1 is connected to a first end of the third switch tube Q3, a first output control pin 1 of the main control chip U1 is connected to a sixteenth input control pin EN 828653 of the second switch tube Q5956, the first end of the sixteenth switching tube Q16 and the four ends of the sixteenth switching tube Q6 are both grounded. An anode of the first one-way conduction element D1 is connected with a fifth end of the fifth switch tube Q5, a cathode of the first one-way conduction element D1 and a sixth end of the sixteenth switch tube Q16 are respectively connected with a second end of the seventeenth resistor R17, the second one-way conduction element D2, an anode of the second one-way conduction element D2 is connected with a second end of the fifth switch tube Q5, and a cathode of the second one-way conduction element D2 and a third end of the sixteenth switch tube Q16 are respectively connected with a second end of the twenty-second resistor R22.

In the embodiment, the switching tubes of Q10, Q11, Q13 and Q14 are P-MOS tubes and are the same as Q1, Q2, Q3 and Q4, namely, the parameters and the turn-on voltage are consistent; the Q12 and Q15 switching tubes are PNP triodes like Q8 and Q9, namely, the parameters are consistent with the starting voltage; the Q16 switching tube is a P-MOS tube and is the same as Q5, Q6 and Q7, namely the parameters are consistent with the starting voltage, and the first unidirectional conductive element D1 and the second unidirectional conductive element D2 are breakdown diodes; the first interface 10 is connected to a DRP device (Dual Role Port, DRP can provide power and data, and can also take power and provide data from the power device, and a typical DRP device is a notebook computer), and the second interface 20 is connected to a second voltage V2. The DRP device accessed by the first interface may communicate through a CC-Logic chip (configured Channel-Logic detection and control chip) inside the TYPE-C, the detection identification pin outputs a first detection signal to the first detection pin CHT1 of the main control chip, and it is determined that power is not required to be supplied through the conversion module 31 of the device power module 30, that is, the voltage of the DRP device is the same as V2. After the main control chip U1 receives the first detection signal, the first terminals of the controlled terminals of Q1, Q2, Q3, and Q4 are pulled down to ground through PASS1 and PASS2, that is, Q1, Q2, Q3, and Q4 are turned on. Meanwhile, the first end of Q12 is pulled high by V2 because of the conduction of Q2, the second end of Q12 is pulled low to ground through PASS1 and R18 because of being connected with the first ends of Q1 and Q2, at this time, Q12 meets the conduction condition, the first end and the third end of Q12 are conducted, so that the first ends of the controlled ends of Q10 and Q11 are pulled high by V2, Q10 and Q11 do not meet the conduction condition to be turned off, the first end of Q15 is pulled high by V2, the second end of Q15 is pulled low to ground through PASS2 by the main control chip, Q15 is conducted, so that the first ends of the controlled ends of Q13 and Q14 are pulled high to V2, and Q13 and Q14 are turned off. At this time, Q1, Q2, Q3, Q4 are on, and Q10, Q11, Q13, Q14 are off. The second voltage V2 may supply power to the DRP device while the battery and the internal system are being powered.

In the second case, since the blind-mate circuit in this embodiment is a symmetrical circuit, the operation process refers to the first case, i.e. when the first interface 10 is connected to the first voltage V1 and the second interface 20 is connected to the DRP device, and the DRP device voltage is the same as V1. When the DRP equipment is successfully accessed, the main control chip enables the Q1, the Q2, the Q3 and the Q4 to be conducted through the PASS1 and the PASS2, and enables the Q10, the Q11, the Q13 and the Q14 to be disconnected, so that the first voltage V1 can supply power to the storage battery and the internal system and supply power to the DRP equipment.

Optionally, the switching tubes Q10, Q11, Q12, Q13, Q14, Q15, and Q16 may be other electronic switches, or MOS tubes, IGBT tubes, triodes, and the like.

Optionally, the main control chip may be an MCU, in actual application, a suitable chip may be selected according to actual requirements, and it is not limited herein that the first unidirectional conducting element D1 and the second unidirectional conducting element D2 may be schottky diodes or other diodes, and a suitable unidirectional conducting element may be selected according to actual requirements, and it is not limited herein.

The working principle of the invention is explained below with reference to fig. 5:

the blind-insertion circuit has five working modes.

In the first case of the first operating mode, the first interface 10 is switched on to the first voltage V1, and the second interface 20 is switched off. The first interface 10 is connected to a first voltage V1, the second interface 20 is left empty, the first voltage V1 pulls the fifth terminal G2 of the Q5 to a high voltage through R5, according to the NMOS tube conduction characteristic, that is, V (gs) is greater than V (th), because the fourth terminal S2 of the Q6 is grounded, the voltage difference between the fifth terminal and the fourth terminal of the Q5 is greater than the turn-on voltage, the third terminal D2 of the Q5 is grounded with the fourth terminal S2 in a conduction manner, so the first terminals of the Q1 and the Q2 connected thereto are pulled down to ground, according to the PMOS tube conduction characteristic, that is, V (gs) is less than V (th), the voltage differences between the first terminal G and the second terminal S of the Q1 and the Q2 are both lower than the turn-on voltage, the Q1 and the Q2 are turned on, and the path between the first interface 10 and the equipment power module 30 is turned on. At this time, the first voltage V1 may enter the device power module through Q1 and Q2, powering the internal system and the battery.

In the second case of the first operation mode, since the blind-mate circuit in this embodiment is a symmetric circuit, the operation process refers to the first case of the first operation mode, that is, when the first interface 10 is idle, the second interface 20 is connected to the second voltage V2, the second voltage V2 pulls up the second terminal G1 of the Q5 through R10, the first terminal and the sixth terminal of the Q5 are conducted to ground, so the first terminals of the controlled terminals of Q3 and Q4 are pulled down to ground, the Q3 and Q4 are conducted, and the V2 can enter the device power module through Q3 and Q4 to supply power to the internal system and the battery.

In the first case of the second operation mode, the first interface 10 is connected to the first voltage V1, the second interface 20 is connected to the second voltage V2, if the voltage value of V1 is smaller than the voltage value of V2, the first terminal of Q9 is connected to V2, the second terminal of Q9 is connected to V1 through R11, and according to the conduction condition of the PNP transistor, that is, u (e) is greater than u (b), since V1 is smaller than V2, the first terminal of Q9 is conducted to the third terminal. Since the second end of the Q7 is connected with the third end of the Q9, the G1 pole of the second end of the Q7 is pulled high, the S1 pole of the first end of the Q7 is grounded, the conducting condition is met, and the S1 pole of the first end of the Q7 and the D1 pole of the sixth end are conducted and grounded; the fifth terminal G2 of the Q5 is pulled down to the ground, the third terminal and the fourth terminal of the Q5 are turned off, the first terminal of the controlled terminal of the connected Q1 and Q2 is not pulled to the ground, the on-condition of the Q1 and Q2 is not met, the Q1 and the Q2 are turned off, the path between the first interface 10 and the device power module 30 is turned off, meanwhile, the V2 pulls up the second terminal G1 of the Q5 through the R10, the first terminal of the Q5 is connected with the sixth terminal to the ground, so the first terminals of the controlled terminals of the Q3 and the Q4 are pulled down to the ground, the Q3 is connected with the Q4, and the V2 enters the device power module through the Q3 and the Q4 to supply power to the internal system and the storage battery.

In the second case of the second operation mode, since the blind-mate circuit in this embodiment is a symmetric circuit, the operation process refers to the first case of the second operation mode, that is, when the voltage value of V1 is greater than the voltage value of V2, Q3 and Q4 are turned off, Q1 and Q2 are turned on, and V1 enters the device power module through Q1 and Q2 to supply power to the internal system and the storage battery.

In the first case of the third operation mode, the first interface 10 is connected to a DRP device (Dual Role Port, DRP can provide power and data, and can also take power and provide data from the power device, and the DRP device is typically a notebook computer), and the second interface 20 is connected to the second voltage V2. The DRP device accessed by the first interface may communicate through a CC-Logic chip (configured Channel-Logic detection and control chip) inside the TYPE-C, the detection identification pin outputs a first detection signal to the first detection pin CHT1 of the main control chip, and it is determined that power is not required to be supplied through the conversion module 31 of the device power module 30, that is, the voltage of the DRP device is the same as V2. After the main control chip U1 receives the first detection signal, the first terminals of the controlled terminals of Q1, Q2, Q3, and Q4 are pulled down to ground through PASS1 and PASS2, that is, Q1, Q2, Q3, and Q4 are turned on. Meanwhile, the first end of Q12 is pulled high by V2 because of the conduction of Q2, the second end of Q12 is pulled low to ground through PASS1 and R18 because of being connected with the first ends of Q1 and Q2, at this time, Q12 meets the conduction condition, the first end and the third end of Q12 are conducted, so that the first ends of the controlled ends of Q10 and Q11 are pulled high by V2, Q10 and Q11 do not meet the conduction condition to be turned off, the first end of Q15 is pulled high by V2, the second end of Q15 is pulled low to ground through PASS2 by the main control chip, Q15 is conducted, so that the first ends of the controlled ends of Q13 and Q14 are pulled high to V2, and Q13 and Q14 are turned off. At this time, Q1, Q2, Q3, Q4 are on, and Q10, Q11, Q13, Q14 are off. The second voltage V2 may supply power to the DRP device while the battery and the internal system are being powered.

In the second case of the third operation mode, since the blind-mate circuit in this embodiment is a symmetric circuit, the operation process refers to the first case of the third operation mode, i.e. when the first interface 10 is connected to the first voltage V1 and the second interface 20 is connected to the DRP device, and the voltage of the DRP device is the same as V1. When the DRP equipment is successfully accessed, the main control chip enables the Q1, the Q2, the Q3 and the Q4 to be conducted through the PASS1 and the PASS2, and enables the Q10, the Q11, the Q13 and the Q14 to be disconnected, so that the first voltage V1 can supply power to the storage battery and the internal system and supply power to the DRP equipment.

In a first case of the fourth operating mode, the first interface 10 is connected to the DRP device, the second interface 20 is connected to the second voltage V2, and first, the DRP device connected to the first interface will output a first detection signal to the first detection pin CHT1 of the main control chip through the CC-Logic chip communication of TYPE-C, and determine that the device voltage of the DRP is less than V2. When the DRP device is successfully connected and detected, the main control chip pulls up the G1 pole of the second terminal of Q16 through EN2, and the S1 pole of the first terminal of Q16 is grounded, so that the conduction condition is satisfied, and therefore the first terminal and the sixth terminal of Q16 are grounded, so that the first terminals of the controlled terminals of Q10 and Q11 are grounded through R17, and the conduction condition is satisfied, and Q10 is conducted with Q11; in parallel, as can be seen from the first operation mode, since the second interface 20 is connected to the second power source V2, the second terminal G1 of the Q5 is pulled high, and the first terminal and the sixth terminal of the Q5 are conducted, so that the Q4 and the Q5 are conducted; in parallel, as can be seen from the second operation mode, since V2 is greater than the voltage of the DRP device, the voltage of the first terminal of Q9 is higher than the voltage of the second terminal, and the voltage of the first terminal of Q8 is lower than the voltage of the second terminal of Q10, Q9 is turned on, Q8 is turned off, so that the controlled terminals of Q1 and Q2 are not pulled low, the on condition is not met, and Q1 and Q2 are turned off; in parallel, the second end of Q15 is connected with the first ends of Q4 and Q5, the second end of Q15 is pulled to the ground, the first end of Q15 is pulled up to V2 due to the conduction of Q3 and Q4, the conduction condition is met, the first end of Q15 is conducted with the third end, and the second ends of Q13 and Q14 are pulled up to V2, so that Q13 and Q14 do not meet the conduction regulation, and Q13 and Q14 are turned off. At this moment, Q3, Q4, Q10 and Q11 are turned on, Q1, Q2, Q13 and Q14 are turned off, a path between the first interface and the output end of the device power supply module is turned on, a path between the second interface and the input end of the device power supply module is turned on, V2 can enter the device power supply module through Q3 and Q4, while power is supplied to the storage battery, V2 also inputs the conversion module 31, and outputs the same voltage as the DRP device to supply power to the DRP device connected with the first interface through Q10 and Q11.

In the second case of the fourth operation mode, since the blind-mate circuit in this embodiment is a symmetric circuit, the operation process refers to the first case of the fourth operation mode, that is, when the first interface 10 is connected to the first voltage V1, the second interface 20 is connected to the DRP device, and the device voltage of the DRP is less than V1, at this time, the main control chip will pull up the second terminal G2 of the Q16 through the EN1, so that the third terminal and the fourth terminal of the Q16 are conducted to the ground; at this moment, Q1, Q2, Q13 and Q14 are turned on, Q3, Q4, Q10 and Q11 are turned off, a path between the second interface and the output end of the device power supply module is turned on, a path between the first interface and the input end of the device power supply module is turned on, V1 can enter the device power supply module through Q1 and Q2, while supplying power to the storage battery, V1 also inputs the conversion module 31, and outputs the same voltage as the DRP device to supply power to the DRP device connected with the second interface through Q13 and Q14.

In the first situation of the fifth working mode, the first interface 10 is connected to the DRP device, the second interface is suspended, the DRP device connected to the first interface can communicate with the first detection pin CHT1 of the main control chip through the TYPE-C CC-Logic chip, and outputs the first detection signal to determine that the DRP device needs to be powered through the storage battery. When the DRP equipment is successfully connected, the second end G1 of the Q16 is pulled high by the main control chip through EN2, the first end S1 of the Q16 is grounded to meet the conduction condition, the first end and the sixth end of the Q16 are grounded in a conduction mode, the first ends of the Q10 and the Q11 are pulled down to the ground through R17 to meet the conduction conditions of Q10 and Q11, and the Q10 and the Q11 are conducted; in parallel, the fifth terminal G2 of the Q5 is pulled to the ground through the first unidirectional conducting element connected to the sixth terminal of the Q16, so that the conducting condition is not met, the third terminal and the fourth terminal of the Q5 are turned off, the controlled terminals of the Q1 and the Q2 are not pulled low, and the Q1 and the Q2 are turned off.

At the moment, Q10 and Q11 are conducted, Q1 and Q2 are turned off, a path between the first interface and the output end of the equipment power supply module is conducted, and the voltage of the storage battery can be input to the DRP equipment through Q10 and Q11 to supply power to the DRP equipment. In parallel, because EN1 does not act, Q13 and Q14 are turned off, if the second power supply is suddenly connected to the second interface at the moment, Q3 and Q4 can be turned on as known from the first working mode, but because Q1, Q2, Q13 and Q14 are all turned off, DRP equipment cannot be influenced, and safety is improved.

In the second case of the fifth operating mode, since the blind-mate circuit in this embodiment is a symmetric circuit, the operating process refers to the first case of the fifth operating mode, that is, when the first interface 10 is suspended and the second interface 20 is connected to the DRP device, at this time, the main control chip pulls up the second terminal G2 of the Q16 through the EN1, so that the third terminal and the fourth terminal of the Q16 are connected to the ground; and the Q13 and the Q14 are connected, the Q3 and the Q4 are disconnected, a channel between the second interface and the output end of the equipment power supply module is connected, and the voltage of the storage battery can be input into the DRP equipment through the Q13 and the Q14 to supply power for the DRP equipment.

Through the five working modes, blind plugging can be realized, and the compatibility and the cruising ability of equipment can be improved.

The invention also provides multi-interface electronic equipment, and referring to fig. 1, the multi-interface electronic equipment includes the blind-mate circuit and an equipment power module 30, an output end of a second switch module of the blind-mate circuit is an output end of the blind-mate circuit, an input end of a power output module of the blind-mate circuit is an input end of the blind-mate circuit, an output end of the blind-mate circuit is connected with an input end of the equipment power module, and an input end of the blind-mate circuit is connected with an output end of the equipment power module. The specific circuit of the blind-mate circuit refers to the above embodiments, and since the electronic device with multiple interfaces adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

Referring to FIG. 5, in one embodiment, device power module 30 includes:

the input end of the conversion module 31 is connected with the output end of the second switch module 50, and the output end of the conversion module 31 is connected with the output end of the power output module 70;

the conversion module 31 is configured to perform voltage conversion on the first voltage V1 accessed by the first interface and output the voltage converted to the power output module 70 of the blind-mate circuit, or perform voltage conversion on the second voltage V2 accessed by the second interface and output the voltage converted to the power output module of the blind-mate circuit. Through the conversion module, the charging action among the devices with different voltage standards can be realized, and the compatibility is improved.

Referring to fig. 5, in the embodiment, the first interface 10 is connected to the DRP device, the second interface 20 is connected to the second voltage V2, and first, the DRP device connected to the first interface outputs the first detection signal to the first detection pin CHT1 of the main control chip through the CC-Logic chip communication of TYPE-C, so as to determine that the device voltage of the DRP is less than V2. When the DRP device is successfully connected and detected, the main control chip pulls up the G1 pole of the second terminal of Q16 through EN2, and the S1 pole of the first terminal of Q16 is grounded, so that the conduction condition is satisfied, and therefore the first terminal and the sixth terminal of Q16 are grounded, so that the first terminals of the controlled terminals of Q10 and Q11 are grounded through R17, and the conduction condition is satisfied, and Q10 is conducted with Q11; in parallel, as can be seen from the first operation mode, since the second interface 20 is connected to the second power source V2, the second terminal G1 of the Q5 is pulled high, and the first terminal and the sixth terminal of the Q5 are conducted, so that the Q4 and the Q5 are conducted; in parallel, as can be seen from the second operation mode, since V2 is greater than the voltage of the DRP device, the voltage of the first terminal of Q9 is higher than the voltage of the second terminal, and the voltage of the first terminal of Q8 is lower than the voltage of the second terminal of Q10, Q9 is turned on, Q8 is turned off, so that the controlled terminals of Q1 and Q2 are not pulled low, the on condition is not met, and Q1 and Q2 are turned off; in parallel, the second end of Q15 is connected with the first ends of Q4 and Q5, the second end of Q15 is pulled to the ground, the first end of Q15 is pulled up to V2 due to the conduction of Q3 and Q4, the conduction condition is met, the first end of Q15 is conducted with the third end, and the second ends of Q13 and Q14 are pulled up to V2, so that Q13 and Q14 do not meet the conduction regulation, and Q13 and Q14 are turned off. At this moment, Q3, Q4, Q10 and Q11 are turned on, Q1, Q2, Q13 and Q14 are turned off, a path between the first interface and the output end of the device power supply module is turned on, a path between the second interface and the input end of the device power supply module is turned on, V2 can enter the device power supply module through Q3 and Q4, while power is supplied to the storage battery, V2 also inputs the conversion module 31, and outputs the same voltage as the DRP device to supply power to the DRP device connected with the first interface through Q10 and Q11.

In the second case, since the blind-mate circuit in this embodiment is a symmetric circuit, the working process refers to the first case, that is, when the first interface 10 is connected to the first voltage V1, and the second interface 20 is connected to the DRP device, and the device voltage of the DRP is less than V1, at this time, the main control chip pulls up the second terminal G2 of the Q16 through EN1, so that the third terminal and the fourth terminal of the Q16 are conducted to ground; at this moment, Q1, Q2, Q13 and Q14 are turned on, Q3, Q4, Q10 and Q11 are turned off, a path between the second interface and the output end of the device power supply module is turned on, a path between the first interface and the input end of the device power supply module is turned on, V1 can enter the device power supply module through Q1 and Q2, while supplying power to the storage battery, V1 also inputs the conversion module 31, and outputs the same voltage as the DRP device to supply power to the DRP device connected with the second interface through Q13 and Q14.

Referring to fig. 5, in one embodiment, the device power module 30 further includes: the input end of the storage battery is connected with the output end of the second switch module, and the output end of the storage battery is connected with the input end of the power output module.

Through the storage battery, the storage battery in the equipment can supply power for the equipment accessed by the interface, and the cruising ability of the accessed equipment is prolonged.

Referring to fig. 5, in this embodiment, the first interface 10 is connected to the DRP device, the second interface is suspended, the DRP device connected to the first interface can communicate with the first detection pin CHT1 of the main control chip through the TYPE-C CC-Logic chip, and output a first detection signal to determine that the DRP device needs to be powered by the storage battery. When the DRP equipment is successfully connected, the second end G1 of the Q16 is pulled high by the main control chip through EN2, the first end S1 of the Q16 is grounded to meet the conduction condition, the first end and the sixth end of the Q16 are grounded in a conduction mode, the first ends of the Q10 and the Q11 are pulled down to the ground through R17 to meet the conduction conditions of Q10 and Q11, and the Q10 and the Q11 are conducted; in parallel, the fifth terminal G2 of the Q5 is pulled to the ground through the first unidirectional conducting element connected to the sixth terminal of the Q16, so that the conducting condition is not met, the third terminal and the fourth terminal of the Q5 are turned off, the controlled terminals of the Q1 and the Q2 are not pulled low, and the Q1 and the Q2 are turned off.

In the second situation, since the blind-mate circuit in this embodiment is a symmetric circuit, the working process refers to the first situation, that is, when the first interface 10 is suspended and the second interface 20 is connected to the DRP device, the main control chip will pull up the G2 electrode of the second terminal of Q16 through EN1, so that the third terminal and the fourth terminal of Q16 are conducted to the ground; and the Q13 and the Q14 are connected, the Q3 and the Q4 are disconnected, a channel between the second interface and the output end of the equipment power supply module is connected, and the voltage of the storage battery can be input into the DRP equipment through the Q13 and the Q14 to supply power for the DRP equipment.

The invention further provides a power supply system, which includes the blind-mate circuit and the multi-interface electronic device, and the specific circuits of the blind-mate circuit and the multi-interface electronic device refer to the above embodiments.

Since the power supply system adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A blind-insertion circuit, comprising:

2. The blind mate circuit of claim 1 wherein the first interface is any one of a USB-a full function bi-directional interface, a USB-B full function bi-directional interface, a USB-C full function bi-directional interface.

3. The blind mate circuit of claim 1 wherein the second interface is any one of a USB-a full function bi-directional interface, a USB-B full function bi-directional interface, a USB-C full function bi-directional interface.

4. The blind-insertion circuit of any of claims 1-3, further comprising: the power supply comparison module is provided with a first input end, a second input end, a first output end and a second output end, the first input end of the power supply comparison module is connected with the first interface, the first output end of the power supply comparison module is connected with the first controlled end of the second switch module, the second input end of the power supply comparison module is connected with the second interface, and the second output end of the power supply comparison module is connected with the second controlled end of the second switch module;

the power supply comparison module is used for outputting a first turn-off signal when the voltage value of the first voltage is smaller than the voltage value of the second voltage; when the voltage value of the first voltage is larger than that of the second voltage, a second turn-off signal is output;

the second switch module is used for switching off a path between the first interface and the equipment power supply module when the first switching-off signal is received; and when the second turn-off signal is received, the path between the second interface and the equipment power supply module is turned off.

5. The blind-insertion circuit of any of claims 1-3, further comprising:

the power output module is provided with a first input end, a second input end, a first output end, a second output end, a first controlled end and a second controlled end, the first input end of the power output module is connected with the output end of the equipment power module, the first output end of the power output module is connected with the first interface, the second input end of the power output module is connected with the output end of the equipment power module, and the second output end of the power output module is connected with the second interface;

and the power output module is used for outputting power.

6. The blind-insertion circuit of claim 5, wherein the blind-insertion circuit further comprises: the control module is provided with a first input control end, a second input control end, a first output control end, a second output control end, a first detection end and a second detection end, the first input control end of the control module is connected with the first controlled end of the second switch module, the second input control end of the control module is connected with the second controlled end of the second switch module, the first output control end of the control module is connected with the first controlled end of the power output module, and the second output control end of the control module is connected with the second controlled end of the power output module; a first detection end of the control module is connected with the first interface, and a second detection end of the control module is connected with the second interface;

7. A multi-interface electronic device, wherein the multi-interface electronic device comprises the blind-mate circuit according to any one of claims 1 to 6 and a device power module, an output terminal of the second switch module of the blind-mate circuit is an output terminal of the blind-mate circuit, an input terminal of the power output module of the blind-mate circuit is an input terminal of the blind-mate circuit, an output terminal of the blind-mate circuit is connected to an input terminal of the device power module, and an input terminal of the blind-mate circuit is connected to an output terminal of the device power module.

8. The multi-interface electronic device of claim 7, wherein the device power module comprises:

the input end of the conversion module is connected with the output end of the second switch module, and the output end of the conversion module is connected with the input end of the power output module;

the conversion module is used for converting the voltage of the first voltage accessed by the first interface and outputting the converted voltage to the power output module of the blind-mate circuit, or converting the voltage of the second voltage accessed by the second interface and outputting the converted voltage to the power output module of the blind-mate circuit.

9. The multi-interface electronic device of claim 7, wherein the device power module further comprises:

the input end of the storage battery is connected with the output end of the second switch module, and the output end of the storage battery is connected with the input end of the power output module.

10. A power supply system, characterized in that it comprises a blind-mate circuit according to any of claims 1 to 6 and a multi-interface electronic device according to any of claims 7 to 9.