CN111313508B - Forward and reverse plug switching circuit, system and intelligent wearable equipment - Google Patents

Forward and reverse plug switching circuit, system and intelligent wearable equipment Download PDF

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Publication number
CN111313508B
CN111313508B CN202010246331.9A CN202010246331A CN111313508B CN 111313508 B CN111313508 B CN 111313508B CN 202010246331 A CN202010246331 A CN 202010246331A CN 111313508 B CN111313508 B CN 111313508B
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China
Prior art keywords
pin
power supply
mos tube
connecting wire
charging
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CN202010246331.9A
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CN111313508A (en
Inventor
余建明
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Guangdong Genius Technology Co Ltd
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Guangdong Genius Technology Co Ltd
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Priority to CN202010246331.9A priority Critical patent/CN111313508B/en
Publication of CN111313508A publication Critical patent/CN111313508A/en
Priority to PCT/CN2020/141097 priority patent/WO2021196782A1/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/6205—Two-part coupling devices held in engagement by a magnet
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
    • H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention provides a forward and backward plug switching circuit, a system and intelligent wearable equipment, wherein the circuit comprises: an input port, an on-off state switching module and an output port; the on-off state switching module is connected between the input port and the output port; the input port is used for being connected with a charging power supply; the on-off state switching module is used for switching the current flow direction of the accessed power supply to accord with the positive and negative electrode directions of the output port so as to supply power to the intelligent wearable equipment. The intelligent wearable device reduces the volume of the intelligent wearable device, reduces the risks of short circuit and electric corrosion of the suction head, and simultaneously realizes positive and negative plug charging.

Description

Forward and reverse plug switching circuit, system and intelligent wearable equipment
Technical Field
The invention relates to the technical field of charging, in particular to a forward and reverse plug switching circuit, a forward and reverse plug switching system and intelligent wearable equipment.
Background
The existing intelligent wearable equipment adopts a magnetic charging mode, and the magnetic charging is realized by the attraction of a magnet male and female pair, so that a charging wire and a magnetic charging interface are connected for charging. The general case is the magnetism of two PIN feet that charge inhale type interface that charges, and one of them charges the PIN foot and is the power PIN foot that just anodal interface Vbus that charges, and another charges the PIN foot and just negative pole interface GND that charges that just leads to charging only can a direction, if the direction connects the reverse and probably leads to intelligent wearable equipment to burn out, user experience is very bad.
In order to solve the problem, the main stream in the market is to add a charging PIN, as shown in fig. 3 and fig. 4, and make the charging PIN symmetrical to realize that both the positive and the negative connection can be charged, and the scheme of 3 charging PINs brings a contradictory problem, if the reasonable distance between the power PIN and the grounding PIN is to be ensured, the magnet mother suction head needs to be large, so that the attractive appearance is not only influenced, but also the space of the intelligent wearable device is occupied, and in addition, if one charging PIN is directly added between the original two charging PINs, the risk of short circuit and electric corrosion is increased.
Disclosure of Invention
The invention aims to provide a forward and reverse plug switching circuit, a forward and reverse plug switching system and intelligent wearable equipment, which are used for reducing the volume of the intelligent wearable equipment, reducing the risks of short circuit and electric corrosion of a suction head and realizing forward and reverse plug charging.
The technical scheme provided by the invention is as follows:
The invention provides a forward and reverse plug switching circuit which is arranged on intelligent wearable equipment, and the circuit comprises: an input port, an on-off state switching module and an output port;
The on-off state switching module is connected between the input port and the output port;
the input port is used for being connected with a charging power supply;
The on-off state switching module is used for switching the current flow direction of the accessed power supply to accord with the positive and negative electrode directions of the output port so as to supply power to the intelligent wearable equipment.
In this scheme, through input port, on-off state switching module and output port for the female suction head of magnet only needs to set up two PIN feet that charge on the intelligent wearable equipment, just can realize reducing the volume of female suction head of magnet, and then when the volume of the wearable equipment of greatly reduced intelligence, satisfies the positive and negative operation demand that can both normally charge of inserting of female suction head of magnet, and reduce the risk of female suction head short circuit of magnet and electric corrosion.
Further preferably, the input port includes:
the first connecting wire is used for inputting a PIN PIN and accessing a positive charging power supply or a negative charging power supply;
the second connecting wire input PIN is used for being connected with a charging power supply with polarity opposite to that of the first connecting wire input PIN;
the output port includes:
the PIN is powered by an internal power supply, the power supply is used for connecting a forward charging power supply;
And the internal grounding power supply PIN is used for accessing a negative charging power supply.
Further preferably, the on-off state switching module includes: a MOS tube and a resistor;
The drains of the first MOS tube and the second MOS tube are respectively connected with the first connecting wire input PIN PIN;
The drains of the third MOS tube and the fourth MOS tube are respectively connected with the second connecting wire input PIN PIN;
The grid electrode of the first MOS tube is connected with the second connecting wire input PIN PIN through a fourth resistor;
the grid electrode of the second MOS tube is connected with the second connecting wire input PIN PIN through a third resistor;
the grid electrode of the third MOS tube is connected with the first connecting wire input PIN PIN through a first resistor;
the grid electrode of the fourth MOS tube is connected with the first connecting wire input PIN PIN through a second resistor;
The sources of the second MOS tube and the fourth MOS tube are respectively connected with the internal power supply PIN PIN;
the sources of the first MOS tube and the third MOS tube are respectively connected with the internal grounding power supply PIN PIN.
In this scheme, through the switching of the switching on and off state of MOS pipe, the positive and negative level of inserting of charging source that the output port was inserted is changed to the physics, realizes that two PIN feet of charging just can satisfy the positive and negative operation demand that can both normally charge of inserting of female suction head of magnet, does not need to increase the volume of female suction head of magnet when guaranteeing to charge PIN foot interval reasonable.
Further preferably, the first MOS transistor and the third MOS transistor are N-type MOS transistors;
The second MOS tube and the fourth MOS tube are P-type MOS tubes.
Further preferably, the on-off state switching module is connected with the output port through a resistor.
In this scheme, can be when charging source surpasses the surge phenomenon that rated charge voltage arouses through setting up the resistance instantaneous, absorb sudden instantaneous overvoltage effectively to the protection intelligent wearable equipment is prevented from damaging.
The invention also provides intelligent wearable equipment, which comprises a magnet female sucker, wherein the intelligent wearable equipment is also integrated with the positive and negative plug switching circuit and comprises: an input port, an on-off state switching module and an output port;
The on-off state switching module is connected between the input port and the output port;
the input port is used for being connected with a charging power supply;
The on-off state switching module is used for switching the current flow direction of the accessed power supply to accord with the positive and negative electrode directions of the output port so as to supply power to the intelligent wearable equipment.
In this scheme, through input port, on-off state switching module and output port for the female suction head of magnet only needs to set up two PIN feet that charge on the intelligent wearable equipment, just can realize reducing the volume of female suction head of magnet, and then when the volume of the wearable equipment of greatly reduced intelligence, satisfies the positive and negative operation demand that can both normally charge of inserting of female suction head of magnet, and reduce the risk of female suction head short circuit of magnet and electric corrosion.
Further preferably, the input port includes:
the first connecting wire is used for inputting a PIN PIN and accessing a positive charging power supply or a negative charging power supply;
the second connecting wire input PIN is used for being connected with a charging power supply with polarity opposite to that of the first connecting wire input PIN;
the output port includes:
the PIN is powered by an internal power supply, the power supply is used for connecting a forward charging power supply;
And the internal grounding power supply PIN is used for accessing a negative charging power supply.
Further preferably, the on-off state switching module includes: a MOS tube and a resistor;
The drains of the first MOS tube and the second MOS tube are respectively connected with the first connecting wire input PIN PIN;
The drains of the third MOS tube and the fourth MOS tube are respectively connected with the second connecting wire input PIN PIN;
The grid electrode of the first MOS tube is connected with the second connecting wire input PIN PIN through a fourth resistor;
the grid electrode of the second MOS tube is connected with the second connecting wire input PIN PIN through a third resistor;
the grid electrode of the third MOS tube is connected with the first connecting wire input PIN PIN through a first resistor;
the grid electrode of the fourth MOS tube is connected with the first connecting wire input PIN PIN through a second resistor;
The sources of the second MOS tube and the fourth MOS tube are respectively connected with the internal power supply PIN PIN;
the sources of the first MOS tube and the third MOS tube are respectively connected with the internal grounding power supply PIN PIN.
In this scheme, through switching on of MOS pipe, the off-state, the positive and negative level of inserting of charging source that the output port was inserted is changed to the physics, realizes that two PIN feet of charging just can satisfy the positive and negative operation demand that can both normally charge of inserting of female suction head of magnet, does not need to increase the volume of female suction head of magnet when guaranteeing to charge PIN foot interval reasonable to reduce the risk of female suction head short circuit of magnet and electric corrosion.
Further preferably, the first MOS transistor and the third MOS transistor are N-type MOS transistors;
The second MOS tube and the fourth MOS tube are P-type MOS tubes.
The invention also provides a positive and negative plug switching system, which comprises a magnetic power adapter and intelligent wearable equipment, wherein the magnetic power adapter is provided with a magnet male sucker, the intelligent wearable equipment is provided with a magnet female sucker, and the intelligent wearable equipment is also integrated with the positive and negative plug switching circuit, and the positive and negative plug switching system comprises: an input port, an on-off state switching module and an output port;
The on-off state switching module is connected between the input port and the output port;
the input port is used for being connected with a charging power supply;
The on-off state switching module is used for switching the current flow direction of the accessed power supply to accord with the positive and negative electrode directions of the output port so as to supply power to the intelligent wearable equipment.
In this scheme, through input port, on-off state switching module and output port for magnet female suction head only needs to set up two PIN feet that charge on the intelligent wearable equipment, just can realize reducing the volume of magnet female suction head, and then when greatly reduced intelligent wearable equipment's volume, satisfies magnet female suction head positive and negative operation demand that inserts all can normally charge, also can make on the magnet suction type power adapter only set up two power supply PIN feet.
Through the positive and negative plug switching circuit, the positive and negative plug switching system and the intelligent wearable equipment provided by the invention, the volume of the intelligent wearable equipment can be reduced, and positive and negative plug charging is realized while the risks of short circuit and electric corrosion of the suction head are reduced.
Drawings
The foregoing features, technical features, advantages and implementation manners of a forward/reverse plug switching circuit, system and intelligent wearable device will be further described with reference to the accompanying drawings in a clear and understandable manner.
FIG. 1 is a schematic diagram illustrating a structure of a forward/reverse switching circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a forward/reverse switching circuit according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a three-PIN charging device for implementing forward and reverse plug charging in the prior art;
Fig. 4 is a schematic structural diagram of another three charging PIN PINs for implementing forward and reverse plug charging in the prior art;
fig. 5 is a schematic structural diagram of one embodiment of a smart wearable device of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
In one embodiment of the present invention, as shown in fig. 1, a forward/reverse plug switching circuit is disposed on an intelligent wearable device 100, where the intelligent wearable device 100 includes a female magnetic attraction head, and the circuit includes: an input port 10, an on-off state switching module 20, and an output port 30;
the on-off state switching module 20 is connected between the input port 10 and the output port 30;
the input port 10 is configured to connect to a female magnet suction head disposed at the intelligent wearable device 100 to access a charging power supply;
The on-off state switching module 20 is configured to switch the current flow direction of the power supply to conform to the positive and negative directions of the output port 30, so as to supply power to the intelligent wearable device 100.
Specifically, the input port includes a pair of connection wire pads, the pair of connection wire pads is used for being connected with the pad of the magnet public suction head and accessing the charging power supply, the output port includes a pair of internal power supply PIN PINs, and the pair of internal power supply PIN PINs is used for supplying power to internal elements (such as a display screen and a CPU) of the intelligent wearable device. The magnet female suction head is provided with a charging PIN PIN pair matched with the input port 10, the magnet male suction head is provided with a power supply PIN PIN pair matched with the charging PIN PIN pair of the magnet female suction head, and the input port 10 is connected with the input port 10 of the magnet female suction head.
The magnetic power adapter is provided with a plug, one end of a charging connecting wire is provided with a magnet male suction head, the other end of the charging connecting wire is connected with the plug in a pluggable manner, when the plug of the magnetic power adapter is plugged in a socket to be connected with an alternating current power supply from the socket, a power supply conversion module at the plug converts the alternating current power supply into a direct current charging power supply, the charging connecting wire transmits the charging power supply to a charging PIN pair connected with the magnetic power adapter through a power supply PIN pair of the magnet male suction head, so that an input port 10 connected with the charging PIN pair is connected with the charging power supply, and then, an on-off state switching module 20 switches the current flow direction of the connected charging power supply to conform to the positive-negative direction of an output port 30, so that internal elements (such as a touch screen, a loudspeaker and the like) of the intelligent wearable device 100 are normally powered.
In another scenario, a magnet male suction head is arranged at one end of a charging connecting wire, the other end of the charging connecting wire is connected with a charging interface of charging equipment such as a charger, and a charging power supply is connected with a charging PIN pair connected with a self magnetic attraction through a power supply PIN of the magnet male suction head by the charging connecting wire, so that an input port 10 connected with the charging PIN pair is connected with the charging power supply, and then, an on-off state switching module 20 switches the current flow direction of the connected charging power supply so as to conform to the positive and negative directions of an output port 30, so that normal power supply is provided for internal elements (such as a touch screen, a loudspeaker and the like) of the intelligent wearable equipment 100.
In this scheme, through input port 10, on-off state switching module 20 and output port 30 for magnet female suction head only needs to set up two PIN feet that charge on the intelligent wearable equipment 100, just can realize reducing the volume of magnet female suction head, and then when greatly reduced intelligent wearable equipment 100's volume, satisfies the operation demand that magnet female suction head positive and negative plug can both normally charge, and reduces magnet female suction head short circuit and the risk of electric corrosion.
In one embodiment of the present invention, as shown in fig. 2, the input port 10 includes:
The first connecting wire inputs a PIN (T2) and is used for being connected with a positive charging power supply or a negative charging power supply;
A second connecting wire input PIN (T3) is used for being connected with a charging power supply with polarity opposite to that of the first connecting wire input PIN (T2);
the output port 30 includes:
The internal power supply PIN (T1) is used for accessing a forward charging power supply;
And the internal grounding power supply PIN (T4) is used for accessing a negative charging power supply.
In this scheme, the connecting wire is USB data line or charging wire, sets for that the charging source direction that first connecting wire input PIN foot (T2) inserted is the same with the polarity that internal power supply PIN foot (T1) inserted charging source, and the charging source direction that second connecting wire input PIN foot (T3) inserted is the same with the polarity that internal ground power supply PIN foot (T4) inserted charging source.
The first connecting wire input PIN foot (T2) is connected with a positive charging power supply, the second connecting wire input PIN foot (T3) is connected with a negative charging power supply, and the current flow direction of the power supply connected with the input port 10 accords with the positive and negative directions of the output port 30 at the moment, so that the positive plug-in charging of the magnet female suction head is realized.
The first connecting wire input PIN PIN (T2) is connected to a negative charging power supply, the second connecting wire input PIN PIN (T3) is connected to a positive charging power supply, the current flow direction of the power supply connected to the input port 10 does not accord with the positive and negative directions of the output port 30 at the moment, but the on-off state switching module 20 switches the current flow direction of the power supply connected to the negative and positive directions of the charging power supply connected to the power supply in a reversed mode, so that the current flow direction of the power supply connected to the input port 10 is switched to accord with the positive and negative directions of the output port 30, and the reverse plug-in charging of the magnet female suction head is realized.
In this embodiment, the input port 10 and the output port 30 only have two PIN PINs respectively, so that only two PIN PINs for charging need to be set on the magnet female suction head, the operation requirement that the magnet female suction head can be normally charged when the volume of the magnet female suction head is reduced is met, and the risks of short circuit and electric corrosion of the magnet female suction head are reduced.
In one embodiment of the present invention, as shown in fig. 2, the on-off state switching module 20 includes: a MOS tube and a resistor;
The drains (D) of the first MOS tube (Q1) and the second MOS tube (Q2) are respectively connected with the first connecting wire input PIN PIN (T2);
The drains (D) of the third MOS tube (Q3) and the fourth MOS tube (Q4) are respectively connected with the second connecting wire input PIN PIN (T3);
the grid electrode (G) of the first MOS tube (Q1) is connected with the second connecting wire input PIN (T3) through a fourth resistor;
The grid electrode (G) of the second MOS tube (Q2) is connected with the second connecting wire input PIN (T3) through a third resistor;
a grid electrode (G) of the third MOS tube (Q3) is connected with the first connecting wire input PIN (T2) through a first resistor;
a grid electrode (G) of the fourth MOS tube (Q4) is connected with the first connecting wire input PIN (T2) through a second resistor;
the sources (S) of the second MOS tube (Q2) and the fourth MOS tube (Q4) are respectively connected with the internal power supply PIN PIN (T1);
The sources (S) of the first MOS tube (Q1) and the third MOS tube (Q3) are respectively connected with the internal grounding power supply PIN PIN (T4).
The first MOS tube (Q1) and the third MOS tube (Q3) are N-type MOS tubes; the second MOS tube (Q2) and the fourth MOS tube (Q4) are P-type MOS tubes.
Specifically, as shown IN fig. 2, the above-mentioned forward and reverse plug switching circuit is provided IN the smart wearable device 100, the first connection line input PIN (T2) and the second connection line input PIN (T3) are IN contact with the charging PIN pair of the magnet female suction head (the contact of the charging PIN pair is defined as 5v_in and gnd_in), and the internal power supply PIN (T1) and the internal ground power supply PIN (T4) are connected to the charging positive terminal (defined as 5V) and the charging negative terminal (defined as GND) of the smart wearable device 100. As can be seen from the above figures, no matter the first connection line input PIN (T2) is connected to 5v_in, the second connection line input PIN (T3) is connected to gnd_in, or the second connection line input PIN (T3) is connected to 5v_in, the first connection line input PIN (T2) is connected to gnd_in, and finally, after conversion, the internal power supply PIN (T1) is 5V, and the internal ground supply PIN (T4) is GND. The specific principle is as follows:
case one: when the first connecting wire input PIN PIN (T2) is connected with 5V_IN and the second connecting wire input PIN PIN (T3) is connected with GND_IN, the 4 MOS tubes are analyzed to be IN the conduction states as follows:
The second MOS tube (Q2) and the fourth MOS tube (Q4) are P-type MOS tubes, and the second MOS tube (Q2) is conducted at the moment and the fourth MOS tube (Q4) is cut off according to the conduction principle of the P-type MOS tubes. So at this time, the internal power supply PIN (T1) and the first connection line input PIN (T2) are equivalent to direct connection, i.e., the internal power supply PIN (T1) is 5V.
The first MOS tube (Q1) and the third MOS tube (Q3) are in N type MOS tube, the third MOS tube (Q3) is conducted at the moment according to the conduction condition of the N type MOS tube, the first MOS tube (Q1) is cut off, namely the second connecting wire input PIN (T3) is directly connected with the internal grounding power supply PIN (T4), and the second connecting wire input PIN (T3) is GND.
And a second case: when the second connection line input PIN (T3) is connected to 5v_in and the first connection line input PIN (T2) is connected to gnd_in:
The second MOS tube (Q2) and the fourth MOS tube (Q4) are P-type MOS tubes, and the fourth MOS tube (Q4) is conducted at the moment and the second MOS tube (Q2) is cut off according to the conduction principle of the P-type MOS tubes. So at this time, the internal power supply PIN (T1) and the first connection line input PIN (T2) are equivalent to direct connection, i.e., the internal power supply PIN (T1) is 5V.
The first MOS tube (Q1) and the third MOS tube (Q3) are in N type MOS tube, the first MOS tube (Q1) is conducted at the moment according to the conduction condition of the N type MOS tube, the third MOS tube (Q3) is cut off, namely the second connecting wire input PIN PIN (T3) is directly connected with the internal grounding power supply PIN PIN (T4), and namely the second connecting wire input PIN PIN (T3) is GND.
Summary no matter how the first connecting wire input PIN PIN (T2) and the second connecting wire input PIN PIN (T3) are connected, the internal power supply PIN PIN (T1) is positive, and the second connecting wire input PIN PIN (T3) is negative, so that the automatic switching of positive and negative insertion levels is realized.
In this scheme, through the switching of the on-off state of MOS pipe, the positive and negative level of inserting of charging source that output port 30 was inserted is changed to the physics, realizes that two PIN feet of charging just can satisfy the positive and negative operation demand that can both normally charge of inserting of female suction head of magnet, does not need to increase the volume of female suction head of magnet when guaranteeing to charge PIN foot interval reasonable.
In one embodiment of the present invention, the on-off state switching module 20 is connected to the output port 30 through a resistor.
In this embodiment, by setting a resistor between the on-off state switching module 20 and the output port 30, when the charging power source instantaneously exceeds the surge phenomenon caused by the rated charging voltage, the gate of the MOS transistor is reduced to be broken down, so as to effectively absorb the sudden instantaneous overvoltage, so as to protect the intelligent wearable device 100 from being damaged, and also prevent the static electricity from affecting the charged device.
In one embodiment of the present invention, as shown in fig. 1 and 5, an intelligent wearable apparatus 100 includes a female magnetic attraction head, where the intelligent wearable apparatus 100 further integrates the positive and negative plug switching circuit, and includes: an input port 10, an on-off state switching module 20, and an output port 30;
the on-off state switching module 20 is connected between the input port 10 and the output port 30;
The input port 10 is used for being connected with the magnet mother suction head to be connected with a charging power supply;
The on-off state switching module 20 is configured to switch the current flow direction of the power supply to conform to the positive and negative directions of the output port 30, so as to supply power to the intelligent wearable device 100.
Specifically, the female suction head of magnet is provided with the PIN pair that charges that matches with input port 10, and the male suction head of magnet is equipped with the power supply PIN pair that matches with the PIN pair that charges of female suction head of magnet, and input port 10 is connected with the input port 10 of female suction head of magnet.
The magnetic power adapter is provided with a plug, one end of a charging connecting wire is provided with a magnet male suction head, the other end of the charging connecting wire is connected with the plug in a pluggable manner, when the plug of the magnetic power adapter is plugged in a socket to be connected with an alternating current power supply from the socket, a power supply conversion module at the plug converts the alternating current power supply into a direct current charging power supply, the charging connecting wire transmits the charging power supply to a charging PIN pair connected with the magnetic power adapter through a power supply PIN pair of the magnet male suction head, so that an input port 10 connected with the charging PIN pair is connected with the charging power supply, and then, an on-off state switching module 20 switches the current flow direction of the connected charging power supply to conform to the positive-negative direction of an output port 30, so that internal elements (such as a touch screen, a loudspeaker and the like) of the intelligent wearable device 100 are normally powered.
In another scenario, a magnet male suction head is arranged at one end of a charging connecting wire, the other end of the charging connecting wire is connected with a charging interface of charging equipment such as a charger, and a charging power supply is connected with a charging PIN pair connected with a self magnetic attraction through a power supply PIN of the magnet male suction head by the charging connecting wire, so that an input port 10 connected with the charging PIN pair is connected with the charging power supply, and then, an on-off state switching module 20 switches the current flow direction of the connected charging power supply so as to conform to the positive and negative directions of an output port 30, so that normal power supply is provided for internal elements (such as a touch screen, a loudspeaker and the like) of the intelligent wearable equipment 100.
In this scheme, through input port 10, on-off state switching module 20 and output port 30 for magnet female suction head only needs to set up two PIN feet that charge on the intelligent wearable equipment 100, just can realize reducing the volume of magnet female suction head, and then when greatly reduced intelligent wearable equipment 100's volume, satisfies the operation demand that magnet female suction head positive and negative plug can both normally charge, and reduces magnet female suction head short circuit and the risk of electric corrosion.
In one embodiment of the present invention, the input port 10 includes:
The first connecting wire inputs a PIN (T2) and is used for being connected with a positive charging power supply or a negative charging power supply;
A second connecting wire input PIN (T3) is used for being connected with a charging power supply with polarity opposite to that of the first connecting wire input PIN (T2);
the output port 30 includes:
The internal power supply PIN (T1) is used for accessing a forward charging power supply;
And the internal grounding power supply PIN (T4) is used for accessing a negative charging power supply.
In this scheme, the connecting wire is USB data line or charging wire, sets for that the charging source direction that first connecting wire input PIN foot (T2) inserted is the same with the polarity that internal power supply PIN foot (T1) inserted charging source, and the charging source direction that second connecting wire input PIN foot (T3) inserted is the same with the polarity that internal ground power supply PIN foot (T4) inserted charging source.
The first connecting wire input PIN foot (T2) is connected with a positive charging power supply, the second connecting wire input PIN foot (T3) is connected with a negative charging power supply, and the current flow direction of the power supply connected with the input port 10 accords with the positive and negative directions of the output port 30 at the moment, so that the positive plug-in charging of the magnet female suction head is realized.
The first connecting wire input PIN PIN (T2) is connected to a negative charging power supply, the second connecting wire input PIN PIN (T3) is connected to a positive charging power supply, the current flow direction of the power supply connected to the input port 10 does not accord with the positive and negative directions of the output port 30 at the moment, but the on-off state switching module 20 switches the current flow direction of the power supply connected to the negative and positive directions of the charging power supply connected to the power supply in a reversed mode, so that the current flow direction of the power supply connected to the input port 10 is switched to accord with the positive and negative directions of the output port 30, and the reverse plug-in charging of the magnet female suction head is realized.
In this embodiment, the input port 10 and the output port 30 only have two PIN PINs respectively, so that only two PIN PINs for charging need to be set on the magnet female suction head, the operation requirement that the magnet female suction head can be normally charged when the volume of the magnet female suction head is reduced is met, and the risks of short circuit and electric corrosion of the magnet female suction head are reduced.
In one embodiment of the present invention, the on-off state switching module 20 includes: a MOS tube and a resistor;
the drain electrodes (D) of the second MOS tube (Q2) and the second MOS tube (Q2) are respectively connected with the first connecting wire input PIN PIN (T2);
The drains (D) of the third MOS tube (Q3) and the fourth MOS tube (Q4) are respectively connected with the second connecting wire input PIN PIN (T3);
the grid electrode (G) of the second MOS tube (Q2) is connected with the second connecting wire input PIN (T3) through a fourth resistor;
The grid electrode (G) of the second MOS tube (Q2) is connected with the second connecting wire input PIN (T3) through a third resistor;
a grid electrode (G) of the third MOS tube (Q3) is connected with the first connecting wire input PIN (T2) through a first resistor;
a grid electrode (G) of the fourth MOS tube (Q4) is connected with the first connecting wire input PIN (T2) through a second resistor;
the sources (S) of the second MOS tube (Q2) and the fourth MOS tube (Q4) are respectively connected with the internal power supply PIN PIN (T1);
the sources (S) of the second MOS tube (Q2) and the third MOS tube (Q3) are respectively connected with the internal grounding power supply PIN PIN (T4).
The first MOS tube (Q1) and the third MOS tube (Q3) are N-type MOS tubes; the second MOS tube (Q2) and the fourth MOS tube (Q4) are P-type MOS tubes.
Specifically, as shown IN fig. 2, the above-mentioned forward and reverse plug switching circuit is provided IN the smart wearable device 100, the first connection line input PIN (T2) and the second connection line input PIN (T3) are IN contact with the charging PIN pair of the magnet female suction head (the contact of the charging PIN pair is defined as 5v_in and gnd_in), and the internal power supply PIN (T1) and the internal ground power supply PIN (T4) are connected to the charging positive terminal (defined as 5V) and the charging negative terminal (defined as GND) of the smart wearable device 100. As can be seen from the above figures, no matter the first connection line input PIN (T2) is connected to 5v_in, the second connection line input PIN (T3) is connected to gnd_in, or the second connection line input PIN (T3) is connected to 5v_in, the first connection line input PIN (T2) is connected to gnd_in, and finally, after conversion, the internal power supply PIN (T1) is 5V, and the internal ground supply PIN (T4) is GND. The specific principle is as follows:
case one: when the first connecting wire input PIN PIN (T2) is connected with 5V_IN and the second connecting wire input PIN PIN (T3) is connected with GND_IN, the 4 MOS tubes are analyzed to be IN the conduction states as follows:
The second MOS tube (Q2) and the fourth MOS tube (Q4) are P-type MOS tubes, and the second MOS tube (Q2) is conducted at the moment and the fourth MOS tube (Q4) is cut off according to the conduction principle of the P-type MOS tubes. So at this time, the internal power supply PIN (T1) and the first connection line input PIN (T2) are equivalent to direct connection, i.e., the internal power supply PIN (T1) is 5V.
The first MOS tube (Q1) and the third MOS tube (Q3) are in N type MOS tube, the third MOS tube (Q3) is conducted at the moment according to the conduction condition of the N type MOS tube, the first MOS tube (Q1) is cut off, namely the second connecting wire input PIN (T3) is directly connected with the internal grounding power supply PIN (T4), and the second connecting wire input PIN (T3) is GND.
And a second case: when the second connection line input PIN (T3) is connected to 5v_in and the first connection line input PIN (T2) is connected to gnd_in:
The second MOS tube (Q2) and the fourth MOS tube (Q4) are P-type MOS tubes, and the fourth MOS tube (Q4) is conducted at the moment and the second MOS tube (Q2) is cut off according to the conduction principle of the P-type MOS tubes. So at this time, the internal power supply PIN (T1) and the first connection line input PIN (T2) are equivalent to direct connection, i.e., the internal power supply PIN (T1) is 5V.
The first MOS tube (Q1) and the third MOS tube (Q3) are in N type MOS tube, the first MOS tube (Q1) is conducted at the moment according to the conduction condition of the N type MOS tube, the third MOS tube (Q3) is cut off, namely the second connecting wire input PIN PIN (T3) is directly connected with the internal grounding power supply PIN PIN (T4), and namely the second connecting wire input PIN PIN (T3) is GND.
Summary no matter how the first connecting wire input PIN PIN (T2) and the second connecting wire input PIN PIN (T3) are connected, the internal power supply PIN PIN (T1) is positive, and the second connecting wire input PIN PIN (T3) is negative, so that the automatic switching of positive and negative insertion levels is realized.
In this scheme, through the switching of the on-off state of MOS pipe, the positive and negative level of inserting of charging source that output port 30 was inserted is changed to the physics, realizes that two PIN feet of charging just can satisfy the positive and negative operation demand that can both normally charge of inserting of female suction head of magnet, does not need to increase the volume of female suction head of magnet when guaranteeing to charge PIN foot interval reasonable.
The invention also provides a positive and negative plug switching system, which comprises a magnetic power adapter and an intelligent wearable device 100, wherein the magnetic power adapter is provided with a magnet male sucker, the intelligent wearable device 100 is provided with a magnet female sucker, the intelligent wearable device 100 is also integrated with the positive and negative plug switching circuit, and the positive and negative plug switching system comprises: an input port 10, an on-off state switching module 20, and an output port 30;
the on-off state switching module 20 is connected between the input port 10 and the output port 30;
The input port 10 is used for being connected with the magnet mother suction head to be connected with a charging power supply;
The on-off state switching module 20 is configured to switch the current flow direction of the power supply to conform to the positive and negative directions of the output port 30, so as to supply power to the intelligent wearable device 100.
Specifically, the female suction head of magnet is provided with the PIN pair that charges that matches with input port 10, and the male suction head of magnet is equipped with the power supply PIN pair that matches with the PIN pair that charges of female suction head of magnet, and input port 10 is connected with the input port 10 of female suction head of magnet.
The magnetic power adapter is provided with a plug, one end of a charging connecting wire is provided with a magnet male suction head, the other end of the charging connecting wire is connected with the plug in a pluggable manner, when the plug of the magnetic power adapter is plugged in a socket to be connected with an alternating current power supply from the socket, a power supply conversion module at the plug converts the alternating current power supply into a direct current charging power supply, the charging connecting wire transmits the charging power supply to a charging PIN pair connected with the magnetic power adapter through a power supply PIN pair of the magnet male suction head, so that an input port 10 connected with the charging PIN pair is connected with the charging power supply, and then, an on-off state switching module 20 switches the current flow direction of the connected charging power supply to conform to the positive-negative direction of an output port 30, so that internal elements (such as a touch screen, a loudspeaker and the like) of the intelligent wearable device 100 are normally powered.
In another scenario, a magnet male suction head is arranged at one end of a charging connecting wire, the other end of the charging connecting wire is connected with a charging interface of charging equipment such as a charger, and a charging power supply is connected with a charging PIN pair connected with a self magnetic attraction through a power supply PIN of the magnet male suction head by the charging connecting wire, so that an input port 10 connected with the charging PIN pair is connected with the charging power supply, and then, an on-off state switching module 20 switches the current flow direction of the connected charging power supply so as to conform to the positive and negative directions of an output port 30, so that normal power supply is provided for internal elements (such as a touch screen, a loudspeaker and the like) of the intelligent wearable equipment 100.
In this scheme, through input port 10, on-off state switching module 20 and output port 30 for magnet female suction head only needs to set up two PIN feet that charge on the intelligent wearable equipment 100, just can realize reducing the volume of magnet female suction head, and then when greatly reduced intelligent wearable equipment 100's volume, satisfies the operation demand that magnet female suction head positive and negative plug can both normally charge, and reduces magnet female suction head short circuit and the risk of electric corrosion.
In the above-mentioned embodiment, can be through positive and negative automatic switch-over circuit that inserts, realize the positive and negative effect that inserts that both charge the PIN foot, guarantee moreover that the PIN interval that charges is reasonable need not increase the volume of the female suction head of magnet, maintain the pleasing to the eye of the female suction head of magnet, also greatly reduced intelligent wearable equipment's volume to improve intelligent wearable equipment's aesthetic degree and portability, promote user's use and experience greatly.
It will be apparent to those skilled in the art that the above-described program modules are only illustrated in the division of the above-described program modules for convenience and brevity, and that in practical applications, the above-described functional allocation may be performed by different program modules, i.e., the internal structure of the apparatus is divided into different program units or modules, to perform all or part of the above-described functions. The program modules in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one processing unit, where the integrated units may be implemented in a form of hardware or in a form of a software program unit. In addition, the specific names of the program modules are also only for distinguishing from each other, and are not used to limit the protection scope of the present application.
The smart wearable device 100 may be a smart watch, a desktop computer, a notebook, a palm computer, a tablet computer, a mobile phone, a man-machine interaction screen, or the like. The smart wearable device 100 may include, but is not limited to, a processor 110, a memory 120. Those skilled in the art will appreciate that fig. 5 is merely an example of the smart wearable device 100 and does not constitute a limitation of the smart wearable device 100, and may include more or fewer components than illustrated, or may combine certain components, or different components, such as: the smart wearable device 100 may also include input/output interfaces, display devices, network access devices, communication buses, communication interfaces, and the like. The communication interface and communication bus may further include an input/output interface, wherein the processor 110, the memory 120, the input/output interface, and the communication interface perform communication with each other through the communication bus. The memory 120 stores a computer program, and the processor 110 is configured to execute the computer program stored in the memory 120 to implement the forward/reverse switching circuit in the above method embodiment.
The Processor 110 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 120 may be an internal storage unit of the smart wearable device 100, for example: hard disk or memory of the smart wearable device. The memory may also be an external storage device of the smart wearable device, such as: a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) and the like which are equipped on the smart wearable device. Further, the memory 120 may also include both internal and external storage units of the smart wearable device 100. The memory 120 is used to store the computer program and other programs and data needed by the smart wearable device 100. The memory may also be used to temporarily store data that has been output or is to be output.
A communication bus is a circuit that connects the elements described and enables transmission between these elements. For example, the processor 110 receives commands from other elements through the communication bus, decrypts the received commands, and performs calculation or data processing according to the decrypted commands. Memory 120 may include program modules such as a kernel (kernel), middleware (middleware), an application programming interface (Application Programming Interface, API), and applications. The program modules may be comprised of software, firmware, or hardware, or at least two of them. The input/output interface forwards commands or data entered by a user through the input/output interface (e.g., sensor, keyboard, touch screen). The communication interface connects the smart wearable device 100 with other network devices, user devices, networks. For example, the communication interface may be connected to a network by wire or wirelessly to connect to external other network devices or user devices. The wireless communication may include at least one of: wireless fidelity (WiFi), bluetooth (BT), near field wireless communication technology (NFC), global Positioning System (GPS) and cellular communications, among others. The wired communication may include at least one of: universal Serial Bus (USB), high Definition Multimedia Interface (HDMI), asynchronous transfer standard interface (RS-232), and the like. The network may be a telecommunications network or a communication network. The communication network may be a computer network, the internet of things, a telephone network. The smart wearable device 100 may connect to a network through a communication interface, and protocols used by the smart wearable device 100 to communicate with other network devices may be supported by at least one of applications, application Programming Interfaces (APIs), middleware, kernels, and communication interfaces.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the parts of a certain embodiment that are not described or depicted in detail may be referred to in the related descriptions of other embodiments.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (6)

1. Positive and negative switching circuit, its characterized in that sets up in intelligent wearable equipment, the circuit includes: an input port, an on-off state switching module and an output port;
The on-off state switching module is connected between the input port and the output port;
the input port comprises: the first connecting wire is used for inputting a PIN PIN and accessing a positive charging power supply or a negative charging power supply; the second connecting wire input PIN is used for being connected with a charging power supply with polarity opposite to that of the first connecting wire input PIN;
The output port includes: the PIN is powered by an internal power supply, the power supply is used for connecting a forward charging power supply; the internal grounding power supply PIN is used for being connected with a negative charging power supply and is used for being connected with the charging power supply;
The on-off state switching module comprises: a MOS tube and a resistor; the drains of the first MOS tube and the second MOS tube are respectively connected with the first connecting wire input PIN PIN; the drains of the third MOS tube and the fourth MOS tube are respectively connected with the second connecting wire input PIN PIN; the grid electrode of the first MOS tube is connected with the second connecting wire input PIN PIN through a fourth resistor; the grid electrode of the second MOS tube is connected with the second connecting wire input PIN PIN through a third resistor; the grid electrode of the third MOS tube is connected with the first connecting wire input PIN PIN through a first resistor; the grid electrode of the fourth MOS tube is connected with the first connecting wire input PIN PIN through a second resistor; the sources of the second MOS tube and the fourth MOS tube are respectively connected with the internal power supply PIN PIN; the sources of the first MOS tube and the third MOS tube are respectively connected with the internal grounding power supply PIN PIN and are used for switching the current flow direction of the access power supply so as to accord with the positive and negative directions of the output port and supply power to the intelligent wearable equipment.
2. The positive-negative plug switching circuit according to claim 1, wherein:
The first MOS tube and the third MOS tube are N-type MOS tubes;
The second MOS tube and the fourth MOS tube are P-type MOS tubes.
3. The forward/reverse switching circuit according to any one of claims 1 to 2, wherein: the on-off state switching module is connected with the output port through a resistor.
4. An intelligent wearable device, comprising a female magnet suction head, wherein the intelligent wearable device is further integrated with the positive and negative plug switching circuit of any one of claims 1-3, comprising: an input port, an on-off state switching module and an output port;
The on-off state switching module is connected between the input port and the output port;
The input port includes: the first connecting wire is used for inputting a PIN PIN and accessing a positive charging power supply or a negative charging power supply; the second connecting wire input PIN is used for being connected with a charging power supply with polarity opposite to that of the first connecting wire input PIN; the output port includes:
The PIN is powered by an internal power supply, the power supply is used for connecting a forward charging power supply; the internal grounding power supply PIN is used for being connected with a negative charging power supply and is used for being connected with the charging power supply;
The on-off state switching module comprises: a MOS tube and a resistor; the drains of the first MOS tube and the second MOS tube are respectively connected with the first connecting wire input PIN PIN; the drains of the third MOS tube and the fourth MOS tube are respectively connected with the second connecting wire input PIN PIN; the grid electrode of the first MOS tube is connected with the second connecting wire input PIN PIN through a fourth resistor; the grid electrode of the second MOS tube is connected with the second connecting wire input PIN PIN through a third resistor; the grid electrode of the third MOS tube is connected with the first connecting wire input PIN PIN through a first resistor; the grid electrode of the fourth MOS tube is connected with the first connecting wire input PIN PIN through a second resistor; the sources of the second MOS tube and the fourth MOS tube are respectively connected with the internal power supply PIN PIN; the sources of the first MOS tube and the third MOS tube are respectively connected with the internal grounding power supply PIN PIN and are used for switching the current flow direction of the access power supply so as to accord with the positive and negative directions of the output port and supply power to the intelligent wearable equipment.
5. The smart wearable device of claim 4, wherein:
The first MOS tube and the third MOS tube are N-type MOS tubes;
The second MOS tube and the fourth MOS tube are P-type MOS tubes.
6. The utility model provides a positive and negative switching system that inserts, includes magnetism and inhale power adapter and intelligent wearable equipment, magnetism is inhaled power adapter and is equipped with magnet public suction head, intelligent wearable equipment is equipped with magnet female suction head, its characterized in that, intelligent wearable equipment still integrate with positive and negative switching circuit of inserting as defined in any one of claims 1-5, include: an input port, an on-off state switching module and an output port;
The on-off state switching module is connected between the input port and the output port;
the input port is used for being connected with a charging power supply;
The on-off state switching module is used for switching the current flow direction of the accessed power supply to accord with the positive and negative electrode directions of the output port so as to supply power to the intelligent wearable equipment.
CN202010246331.9A 2020-03-31 2020-03-31 Forward and reverse plug switching circuit, system and intelligent wearable equipment Active CN111313508B (en)

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