CN206332602U - Positive anti-plug can recognize that supply unit and intelligent charger - Google Patents

Abstract

The utility model relates to an identifiable power supply device and an intelligent charging device that can be plugged in front and back, comprising: a power converter, a first electrical connector, a switching unit, a detection unit and a control unit, the first electrical connector is suitable for connecting with a second The electrical connector is combined and has a first terminal group, and the second electrical connector has a second terminal group; the switching unit is connected between the first electrical connector and the output end of the power converter; the input end of the detection unit is connected to the second terminal group An electrical connector is connected to detect the combined state of the first and second electrical connectors; the input end of the control unit is connected to the output end of the detection unit, and the first output end of the control unit is connected to the switching unit to detect the combined state according to the combination The state controls the switching unit to selectively connect each terminal in the first terminal group to each terminal of the output end of the power converter, so that the sequence of the terminals in the first terminal group is consistent with the sequence of the terminals in the second terminal group . The positive and negative plug-in identifiable power supply device of the utility model can realize the automatic recognition of the positive and negative plug-in.

Description

Positive and reverse insertion can identify power supply unit and smart charging device

technical field

The utility model relates to the technical field of power supplies, in particular to a power supply device and an intelligent charging device that can be identified by front and back insertion.

Background technique

A power supply device is a device used for power supply or charging of an electronic device, such as a power adapter or a power strip. When using the power supply unit to charge the electronic equipment, it is necessary to connect the USB plug of the data cable to the USB interface on the power supply unit such as the power adapter and the power strip. As we all know, the connection between the USB plug and the USB interface must be aligned and inserted, and the positive and negative directions must be distinguished before insertion, so the operation is very cumbersome and inconvenient for the user.

In order to solve the problem that the front and the reverse are difficult to distinguish, in the related art, the structure of the USB plug and the USB interface is improved. Distinguishing the square direction, although the improvement of the physical structure can solve the above problems, but this structural improvement makes the structure of the USB plug and the USB interface complicated, the production process is complicated, and the processing cost is high.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, an object of the present utility model is to provide a power supply device that can be identified by front and back insertion.

Another object of the present invention is to provide an intelligent charging device with the reversible plug-in identifiable power supply device.

In order to achieve the above purpose, on the one hand, the power supply device with identifiable front and back insertion according to the embodiment of the present utility model includes:

Power converters to convert alternating current to direct current;

a first electrical connector adapted to be combined with a second electrical connector and having a first set of terminals, the second electrical connector having a second set of terminals;

a switching unit, the switching unit is connected between the first electrical connector and the output end of the power converter;

A detection unit, the input terminal of the detection unit is connected to the first electrical connector to detect the combination state of the second electrical connector and the first electrical connector, and the combination state includes positive combination and the reverse binding state;

A control unit, the input terminal of the control unit is connected to the output terminal of the detection unit, the first output terminal of the control unit is connected to the switching unit, and is used to control the selectivity of the switching unit according to the combination state Connect each terminal in the first terminal group to each terminal of the output end of the power converter, so that the sequence of the terminals in the first terminal group is the same as the sequence of the terminals in the second terminal group unanimous.

According to the reversible plug-in identifiable power supply device provided by the embodiment of the present invention, the detection unit detects the combination state (forward combination or reverse combination) of the second electrical connector and the first electrical connector, and then the control unit according to the The combined state control switching unit selectively connects each terminal in the first terminal group to each corresponding terminal of the output end of the power converter, so that the power converter is in the forward combined state and reverse Direct current can be output to the second electrical connector in the combined state, so that automatic identification of positive and negative insertion can be realized. The utility model can realize positive and negative insertion identification through circuit improvement without improving the structure of the first electrical connector and the second electrical connector, thus, the first electrical connector and the first electrical connector can be kept The structure is simple, and the processing difficulty and cost are reduced.

In addition, according to the above-mentioned embodiment of the utility model, the positive and negative insertion identification circuit can also have the following additional technical features:

According to an embodiment of the present invention, the switching unit includes an analog switch chip, the first pin of the analog switch chip is connected to the positive data terminal of the output terminal of the power converter, and the second pin of the analog switch chip The pin is connected to the data negative terminal of the output end of the power converter, the third pin of the analog switch chip is grounded, the ninth pin of the analog switch chip is connected to a first voltage source, and the analog switch chip The fourth pin and the seventh pin of the chip are connected to the fourth terminal of the first terminal group, and the fifth pin and the sixth pin of the analog switch chip are connected to the second terminal of the first terminal group. terminal, the eighth pin of the analog switch chip is grounded, and the tenth pin of the analog switch chip is connected to the first output end of the control unit;

The fourth terminal of the first terminal group is adapted to be in electrical contact with the positive data terminal of the second terminal group in the forward connection, and is in electrical contact with the data positive terminal in the second terminal group in the reverse connection. The data negative end of the first terminal group is in electrical contact; the second terminal of the first terminal group is adapted to be in contact with the data negative end of the second terminal group in the forward connection, and to be in contact with the data negative end in the reverse connection. The data positive end of the second terminal group is in electrical contact;

When the tenth pin of the analog switch chip is at a low level, the first pin of the analog switch chip is connected to the seventh pin of the analog switch chip, and the second pin of the analog switch chip Conducted with the sixth pin of the analog switch chip; when the tenth pin of the analog switch chip is at a high level, the first pin of the analog switch chip is connected to the fifth pin of the analog switch chip The pin is turned on, and the second pin of the analog switch chip is turned on with the fourth pin of the analog switch chip.

According to an embodiment of the present invention, the input terminal of the detection unit is connected to at least one terminal of the first electrical connector, and at least one terminal of the first electrical connector is suitable for connecting with the second At least one terminal in the terminal group is in electrical contact, and the output terminal of the detection unit is connected to the input terminal of the control unit, so as to combine the second electrical connector with the first electrical connector in the forward direction Different level signals are output when combined with the reverse.

According to an embodiment of the present utility model, the detection unit includes:

first triode;

The first MOS transistor, the source of the first MOS transistor is connected to a first resistor and one end of a third resistor, the other end of the first resistor is grounded, and the drain of the first MOS transistor is connected to a first resistor through a first resistor. The four resistors are connected to the base of the first triode, and the emitter of the first triode is grounded;

second triode;

The second MOS transistor, the source of the second MOS transistor is connected to the source of the first MOS transistor, the drain of the second MOS transistor is connected to the base of the second triode through a seventh resistor pole, the emitter of the second triode is grounded;

The gate of the first MOS transistor, the gate of the second MOS transistor, the collector of the first triode, the collector of the second triode and the other end of the third resistor are jointly used as the output of the detection unit end;

The fifth end of the first terminal group is connected to the drain of the first MOS transistor, the first end of the first terminal group is connected to the drain of the second MOS transistor, and the first terminal group The third terminal of is connected to the second voltage source;

The fifth end of the first terminal group is adapted to be in electrical contact with one of the ground end and the vacant end of the second terminal group, and the first end of the first terminal group is adapted to be in contact with the second terminal The ground terminal in the group is in electrical contact with the other of the vacant terminals, and the third terminal of the first terminal group is adapted to be in electrical contact with the power supply terminal in the second terminal group.

According to an embodiment of the present invention, the control unit includes a microprocessor, the first pin of the microprocessor is connected to the first voltage source, the tenth pin of the microprocessor is grounded, and the microprocessor The second pin and the third pin of the device are jointly used as the input end of the control unit, the second pin of the microprocessor is connected with the collector of the first triode, and the third pin of the microprocessor The pin is connected to the collector of the second triode and connected to the first voltage source through an eighth resistor, and the fourth pin of the microprocessor is connected to the gate of the first MOS transistor, so The fifth pin of the microprocessor is connected to the gate of the second MOS transistor, the ninth pin of the microprocessor is connected to the other end of the third resistor and grounded through the fourth capacitor, the The eighth pin of the microprocessor is used as the first output end of the control unit.

According to an embodiment of the present invention, it further includes an LED indicating circuit connected to the second output terminal of the control unit for displaying the working state of the first electrical connector.

According to an embodiment of the present invention, the sixth pin and the seventh pin of the microprocessor are jointly used as the second output end of the control unit;

The LED indicating circuit comprises a first light emitting diode and a second light emitting diode, the anode of the first light emitting diode is connected with the sixth pin of the microprocessor through a fifth resistor, and the anode of the second light emitting diode is It is connected to the seventh pin of the microprocessor through a sixth resistor, and the cathodes of the first light-emitting diode and the second light-emitting diode are grounded.

On the other hand, the intelligent charging device provided according to the embodiment of the present invention includes:

The power supply unit can be identified by plugging it forward and backward as mentioned above;

a second electrical connector, the second electrical connector is adapted to be combined with the first electrical connector in the reversible plug-in identifiable power supply device;

A third electrical connector, the third electrical connector is connected to the second electrical connector and is adapted to be connected to a charging interface of an electronic device.

According to an embodiment of the present invention, the second electrical connector is combined with the first electrical connector in the reversible plug-in identifiable power supply device in a magnetic adsorption manner.

Description of drawings

Fig. 1 is a block diagram of an identifiable power supply device with positive and negative insertion according to an embodiment of the present invention;

Fig. 2 is a diagram of the use state of the power supply device with positive and negative plug-in identification according to the embodiment of the present utility model;

Fig. 3 is a circuit diagram of a switching unit in a power supply device with positive and negative insertion identifiable according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of the internal structure of an analog switch chip in an identifiable power supply device with positive and negative insertion according to an embodiment of the present invention;

Fig. 5 is a circuit diagram of a detection unit in an identifiable power supply device with positive and negative insertion according to an embodiment of the present invention;

Fig. 6 is a circuit diagram of a control unit in an identifiable power supply device with positive and negative insertion according to an embodiment of the present invention;

Fig. 7 is a circuit diagram of the LED indicator unit in the power supply device with positive and negative insertion identifiable according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of the positive combination of the first electrical connector and the second electrical connector in the power supply device with positive and negative plug-in identification according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of the reverse combination of the first electrical connector and the second electrical connector in the reversible plug-in identifiable power supply device according to an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of an intelligent charging device according to an embodiment of the present invention;

Fig. 11 is a schematic structural view of another embodiment of the smart charging device of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Referring to Fig. 1 to Fig. 2 , the embodiment of the present invention provides a power supply device 100 that can be identified by positive and negative insertion, including a power converter 10, a first electrical connector 11, a switching unit 12, a detection unit 13 and a control unit 14.

Specifically, the power converter 10 is used to convert alternating current into direct current. For example, the alternating current input to the power converter may be 90-264 volts (V) alternating current, and the alternating current may be converted by the power converter 10 into a voltage suitable for The electronic device 300 is powered by direct current, such as 20V, 12V, 5V and so on.

The first electrical connector 11 is suitable for combining with a second electrical connector 20 and has a first terminal set, and the second electrical connector 20 has a second terminal set. That is to say, the first electrical connector 11 and the second electrical connector 20 can be docked with each other, for example, plugged in a plug-in manner, or magnetically attracted in combination.

Referring to Fig. 2, in a specific application, the second electrical connector 20 may be connected to the power transmission part 200, for example, the power transmission part 200 is a power cord on an electronic device, then the second electrical connector 20 is connected to the power cord One end of the power cord, and the other end of the power cord is integrally connected to the electronic device. Or the power transmission part 200 is a data line, the second electrical connector 20 is connected to one end of the data line, and the other end of the data line is provided with a third electrical connector 21, and the third electrical connector 21 is suitable for being connected to the electronic device 300 for charging. Interface 301. Or the power transmission part 200 is a replaceable adapter plug, the second electrical connector 20 is connected to one end of the replaceable adapter plug, and the other end of the replaceable adapter plug is provided with a third electrical connector 21, and the third electrical connector 21 It is suitable for being connected to the charging interface 301 of the electronic device 300 .

Moreover, the second electrical connector 20 can be combined with the first electrical connector 11 in a forward direction (as shown in FIG. 8 ), or can be combined with the first electrical connector 11 in a direction (as shown in FIG. 9 ). That is, the coupling state between the second electrical connector 20 and the first electrical connector 11 includes a forward coupling state and a reverse coupling state, and the first electrical connector 11 and the second electrical connector 20 no matter Whether it is in the forward coupling state or the reverse coupling state, each terminal in the second terminal group in the second electrical connector 20 is in electrical contact with each terminal in the first terminal group in the first electrical connector 11 .

It should be noted that the reverse combined state can be understood as a state formed by turning the second electrical connector 20 by 180° in the forward direction. Of course, the reverse combination state can be interpreted differently according to the arrangement of the terminals in the first terminal group and the second terminal group.

The switching unit 12 is connected between the first electrical connector 11 and the output terminal of the power converter 10 . Since the second electrical connector 20 is connected to the power transmission part 200 in a specific application, and the power transmission part 200 is connected to the charging interface 301 of the electronic device 300, so each terminal on the second electrical connector 20 (such as The order of the power terminal, data positive terminal, data negative terminal, ground terminal, etc.) is fixed and corresponds to the terminals in the charging interface 301 . At the same time, the order of the terminals at the output end of the power converter 10 is also fixed. If the first electrical connector 11 is directly connected to the output end of the power converter 10, the order of the terminals on the first electrical connector 11 is Corresponds to the order of the terminals of the output end of the power converter 10. At this time, when charging is required, if the second electrical connector 20 is combined with the first electrical connector 11, it must be in the correct direction (for example, forward) Combining can ensure that the terminals on the second electrical connector 20 and the first electrical connector 11 can be connected correspondingly for charging. However, if the second electrical connector 20 is combined with the first electrical connector 11 in reverse, the terminals on the second electrical connector 20 and the first electrical connector 11 do not correspond to each other, and charging cannot be turned on.

However, in the utility model, a switching unit 12 is provided between the first electrical connector 11 and the output end of the power converter 10, and the switching unit 12 can change each terminal on the first electrical connector 11 and each terminal of the output end of the power converter 10. The connection order of the terminals, that is to say, the arrangement order of the terminals on the first electrical connector 11 can be changed by the switching unit 12 .

The input terminal of the detection unit 13 is connected to the first electrical connector 11 to detect the combination state of the second electrical connector 20 and the first electrical connector 11, and the combination state includes positive combination and Reverse binding state. That is to say, when the second electrical connector 20 is combined with the first electrical connector 11, the detection unit 13 generates a corresponding signal, for example, when the second electrical connector 20 is combined with the first electrical connector 11 in a forward direction, the detection unit 13 The unit generates a first signal, and when the second electrical connector 20 is reversely coupled with the first electrical connector 11 , the detection unit 13 generates a second signal.

The input end of the control unit 14 is connected to the output end of the detection unit 13, and the first output end of the control unit 14 is connected to the switching unit 12, so as to control the selectivity of the switching unit 12 according to the combination state. Each terminal in the first terminal group is connected to each terminal of the output end of the power converter 10, so that the order of each terminal in the first terminal group is the same as the order of each terminal in the second terminal group unanimous.

That is to say, the control unit 14 controls the switching unit 12 to perform the switching operation according to the signal output by the detection unit 13, and then changes the connection sequence between each terminal on the first electrical connector 11 and each terminal of the output end of the power converter 10, so that The order of each terminal on the first electrical connector 11 is consistent with the smooth correspondence of each terminal on the second electrical connector 20, thereby ensuring that no matter whether the second electrical connector 20 is combined with the first electrical connector 11 in a forward direction or reversely In combination, the DC power output by the power converter 10 can be output to the second electrical connector 20 through the first electrical connector 11, and then input into the power transmission part 200 through the second electrical connector 20 and transmitted to the electronic device 300, which is realized as The electronic device 300 supplies power.

It should be noted that in the present invention, the order of the terminals in the first terminal group is consistent with the order of the terminals in the second terminal group means that the terminals with the same function in the first terminal group and the second terminal group are just connected together For example, the data positive and negative terminals in the first terminal group are just connected to the data positive and negative terminals in the second terminal group respectively. In this way, the power converter 10 can output the DC power to the second electrical connector 20 in both the forward coupling state and the reverse coupling state.

For example, when the second electrical connector 20 is combined with the first electrical connector 11 in a forward direction, the detection unit 13 generates a first signal. Exemplarily, the number of terminals of the second electrical connector 20 is five, and the forward combination At this time, the order of the five terminals on the second electrical connector 20 is ground terminal, data positive terminal, power supply terminal, data negative terminal and vacant terminal from top to bottom. At this time, the control unit 14 controls the switching unit 12 to switch to the first state according to the first signal, and in the first state, each terminal of the first electrical connector 11 is connected to the output terminals of the power converter 20 in a first sequence. on each terminal, so that the order of each terminal on the first electrical connector 11 is exactly the same as the order of each terminal on the second electrical connector 20, that is, the order of each terminal of the first electrical connector 11 is also grounded from top to bottom terminal, data positive terminal, power supply terminal, data negative terminal, and vacant terminal.

When the second electrical connector 20 is reversely combined with the first electrical connector 11, the detection unit 13 generates a second signal, and correspondingly, the order of the five terminals on the second electrical connector 20 is reversely coupled from the top to the bottom. The bottom is the vacant terminal, the data negative terminal, the power supply terminal, the data positive terminal, and the ground terminal. At this time, the control unit 14 controls the switching unit 12 to switch the first state to the second state according to the second signal, that is, to adjust the connection sequence between each terminal of the first electrical connector 11 and each terminal of the output end of the power adapter 10, and adjust The final order is the second order, so that the adjusted order of each terminal on the first electrical connector 11 is just consistent with the order of each terminal on the second electrical connector 20, that is, each terminal of the first electrical connector 11 at this time The order of the terminals is also the vacant terminal, the data negative terminal, the power supply terminal, the data positive terminal, and the ground terminal from top to bottom.

Thus, regardless of whether the second electrical connector 20 is combined with the first electrical connector 11 in the forward direction or in the opposite direction, each terminal on the first electrical connector 11 and the output end of the power converter 10 are changed through the automatic switching of the switching unit 12 . The connection sequence between the terminals can make the order of the terminals on the first electrical connector 11 consistent with the smooth correspondence of the terminals on the second electrical connector 20, thereby ensuring that no matter whether it is combined in a forward direction or in a reverse direction, it can The electronic device 300 is charged normally.

According to the power supply device 100 provided by the embodiment of the present invention, the detection unit 13 detects the combination state of the second electrical connector 20 and the first electrical connector 11 (forward combination or reverse combination), and then through The control unit 14 controls the switching unit 12 to selectively connect each terminal in the first terminal group to each corresponding terminal of the output end of the power converter 10 according to the combination state, so that the power converter 10 is The direct current can be output to the second electrical connector 20 in both the forward coupling state and the reverse coupling state, so that the automatic identification of forward and reverse insertion can be realized. The utility model can realize positive and negative insertion identification through circuit improvement without improving the structure of the first electrical connector 11 and the second electrical connector 20, thus, the first electrical connector 11 and the second electrical connector can be kept The structure of the electrical connector 20 is simple, which reduces processing difficulty and cost.

Referring to FIG. 3 , in one embodiment of the present invention, the switching unit 12 includes an analog switch chip U1, the first pin D+ of the analog switch chip U1 is connected to the data positive end of the output end of the power converter 10 D+ is connected, the second pin D- of the analog switch chip U1 is connected to the data negative terminal D- of the output end of the power converter 10, the third pin GND of the analog switch chip U1 is grounded, and the analog The ninth pin VCC of the switch chip U1 is connected to a first voltage source, the fourth pin HSD1- and the seventh pin HSD2+ of the analog switch chip U1 are connected to the fourth terminal a of the first terminal group, The fifth pin HSD1+ and the sixth pin HSD2- of the analog switch chip U1 are connected to the second terminal b of the first terminal group, and the eighth pin of the analog switch chip U1 Grounded, the tenth pin S of the analog switch chip U1 is connected to the first output end of the control unit 14 .

The fourth end a of the first terminal group is adapted to be in electrical contact with the data positive terminal GD+ in the second terminal group in the forward connection, and in electrical contact with the data positive terminal GD+ in the second terminal group in the reverse connection. The data negative terminal GD-electric contact of the first terminal group; the second terminal b of the first terminal group is suitable for connecting with the data negative terminal GD-contact of the second terminal group in the forward direction, and in the reverse direction It is in electrical contact with the positive data terminal GD+ of the second terminal group when it is combined.

When the tenth pin S of the analog switch chip U1 is at low level, the first pin D+ of the analog switch chip U1 is connected to the seventh pin HSD2+ of the analog switch chip U1, and the analog switch The second pin D- of the chip U1 is connected to the sixth pin HDS2- of the analog switch chip U1; when the tenth pin S of the analog switch chip U1 is at a high level, the analog switch chip U1 The first pin D+ of the analog switch chip U1 is connected to the fifth pin HSD1+ of the analog switch chip U1, and the second pin D- of the analog switch chip U1 is connected to the fourth pin HSD1- of the analog switch chip U1. Pass.

Referring to Fig. 4, that is to say, the analog switch chip U1 has two SPDT switches, the static contact of the first SPDT switch is used as the first pin D+ of the analog switch chip U1, and the first SPDT switch is the first pin D+ of the analog switch chip U1. The two moving contacts of the throw switch are respectively used as the fifth pin HSD1+ and the seventh pin HSD2+ of the analog switch chip U1, and the static contact of the second SPDT switch is used as the second pin D- of the analog switch chip U1 , the moving contact of the second SPDT switch serves as the fourth pin HSD1- and the sixth pin HSD2- of the analog switch chip U1.

For example, when the second electrical connector 20 and the first electrical connector 11 are positively connected, the first output terminal of the control unit 14 outputs a low level as an example, that is, the tenth pin S of the analog switch chip U1 is low level, the first SPDT switch is switched to contact with the seventh pin HSD2+ of the analog switch chip U1, and the second SPDT switch is correspondingly switched to contact with the sixth pin HSD2- of the analog switch chip U1 Contact, that is, the first pin D+ of the analog switch chip U1 is connected to the seventh pin HSD2+ of the analog switch chip U1, and the second pin D- of the analog switch chip U1 is connected to the seventh pin HSD2+ of the analog switch chip U1 The sixth pin HSD2- conduction. Thus, when combined in the forward direction, the fourth terminal a of the first electrical connector 11 is connected to the positive data terminal D+ of the output terminal of the power adapter 10, and the second terminal b of the first electrical connector 11 is connected to the positive data terminal D+ of the power converter 10. The data negative terminal of the output terminal is connected to D-.

In the forward connection, the fourth end a of the first terminal group is in electrical contact with the data positive terminal GD+ in the second terminal group, and the second end b of the first terminal group is in electrical contact with the data positive terminal GD+ in the second terminal group. Therefore, at this time, the data positive terminal D+ of the output terminal of the power converter 10 is just connected to the data positive terminal GD+ of the second electrical connector 20, and the data negative terminal of the output terminal of the power converter 10 The terminal D- is exactly connected to the negative data terminal GD- of the second electrical connector 20 , so that the power converter 10 outputs DC power to the second electrical connector 20 when the positive connection is realized.

When the second electrical connector 20 is reversely combined with the first electrical connector 11, the first output terminal of the control unit 14 outputs a high level, that is, the tenth pin S of the analog switch chip U1 is at a high level, then the first The first SPDT switch is switched to be in contact with the fifth pin HSD1+ of the analog switch chip U1, and the second SPDT switch is correspondingly switched to be in contact with the fourth pin HSD1- of the analog switch chip U1, that is, the analog The first pin D+ of the switch chip U1 is connected to the fifth pin HSD1+ of the analog switch chip U1, and the second pin D- of the analog switch chip U1 is connected to the fourth pin HSD1- of the analog switch chip U1. conduction. Thus, in reverse connection, the second terminal b of the first electrical connector 11 is connected to the positive data terminal D+ of the output terminal of the power adapter 10, and the fourth terminal a of the first electrical connector 11 is connected to the positive data terminal D+ of the power converter 10. The data negative pole of the output terminal is connected to the D- terminal. That is to say, at this time, the connection sequence between the second terminal b and the fourth terminal a of the first electrical connector 11 and the positive data terminal GD+ and the negative data terminal GD− of the output terminal of the power converter 10 is just opposite to that of the forward connection.

In reverse connection, the second terminal b of the first terminal group is in electrical contact with the positive data terminal GD+ in the second terminal group, and the fourth terminal a of the first terminal group is in electrical contact with the data positive terminal GD+ in the second terminal group. The data negative terminal GD-contacts, that is, the order of the data positive terminal GD+ and the data negative terminal GD- on the second electrical connector 20 is just opposite. Therefore, at this time, the data positive terminal D+ of the output terminal of the power converter 10 is just connected to the data positive terminal GD+ of the second electrical connector 20, and the data negative terminal D- of the output terminal of the power converter 10 is just connected to the second electrical connector 20. The data negative terminal GD- of the connector 20 is correspondingly turned on, so that the power converter 10 can also output the DC power to the second electrical connector 20 when the reverse connection is realized.

Referring to Fig. 5, in one embodiment of the present invention, the input terminal of the detection unit 13 is connected to at least one terminal in the first electrical connector 11, at least one of the first electrical connectors 11 The terminal is suitable for electrical contact with at least one terminal in the second terminal group, and the output end of the detection unit 13 is connected to the input end of the control unit 14 for connecting the second electrical connector 20 with the The first electrical connector 11 outputs signals with different levels when it is combined forwardly and backwardly.

That is to say, at least one terminal on the first electrical connector 11 is used as the detection terminal, and the input terminal of the detection unit 13 is connected to the detection terminal. Since the second electrical connector 20 is combined with the first electrical connector 11 in the forward direction When combined in the forward direction and in the reverse direction, the terminals on the second electrical connector 20 that are connected to the detection end are different. Therefore, in the forward direction and in the reverse direction, the level signals of the detection end are different. Correspondingly, Then the level signals output by the detection unit 13 are also different. Thus, the control unit 14 can realize switching control of the switching unit 12 through the difference in the level signal output by the detection unit 13 , and further realize switching of the terminal connection sequence of the first electrical connector 11 .

Referring to FIG. 5 , in one embodiment of the present invention, the detection unit 13 includes a first triode Q2 , a first MOS transistor Q1 , a second triode Q3 and a second MOS transistor Q4 . Wherein, the source of the first MOS transistor Q1 is connected to one end of a first resistor R1 and a third resistor R3, the other end of the first resistor R1 is grounded to GND, and the drain of the first MOS transistor Q1 is connected through a The fourth resistor R4 is connected to the base of the first transistor Q2, and the emitter of the first transistor Q2 is grounded to GND.

The source of the second MOS transistor Q4 is connected to the source of the first MOS transistor Q1, the drain of the second MOS transistor Q4 is connected to the base of the second triode Q3 through a seventh resistor R7, The emitter of the second transistor Q3 is grounded to GND.

The gate of the first MOS transistor Q1, the gate of the second MOS transistor Q4, the collector of the first triode Q2, the collector of the second triode Q3, and the other end of the third resistor R3 together serve as the detection The output end of the unit 13; the fifth end of the first terminal group is connected to the drain of the first MOS transistor, and the first end of the first terminal group is connected to the drain of the second MOS transistor Q4, so The third terminal of the first terminal group is connected to the second voltage source.

The fifth terminal c of the first terminal group is adapted to be in electrical contact with one of the ground terminal GND and the vacant terminal O in the second terminal group, and the first terminal d of the first terminal group is suitable for being in contact with the second terminal group. The ground terminal GND in the two terminal groups is in electrical contact with the other of the vacant terminals O, and the third terminal e of the first terminal group is adapted to be in electrical contact with the power supply terminal VCC in the second terminal group.

In the example shown in Fig. 8 to Fig. 9, in the forward connection, the fifth terminal c of the first terminal group is in electrical contact with the ground terminal GND in the second terminal group, and the first terminal d in the first terminal group is in electrical contact with the ground terminal GND in the second terminal group. The vacant terminal O in the two terminal groups is in electrical contact, and when reversely combined, the fifth terminal c of the first terminal group is in electrical contact with the vacant terminal O in the second terminal group, and the first terminal in the first terminal group d is in electrical contact with the ground terminal GND in the second terminal group.

When combined in the forward direction, the gate (ON-1) of the first MOS transistor Q1 is at a high level, the gate (ON-2) of the second MOS transistor Q4 is at a low level, and the set of the first triode Q2 The electrode ( LOAD - 1 ) is at low level, and the collector ( LOAD - 2 ) of the second transistor Q3 is at high level. At this time, the first output terminal of the control unit 14 outputs a first level signal.

When combined in reverse, the gate (ON-1) of the first MOS transistor Q1 is at low level, the gate (ON-2) of the second MOS transistor Q4 is at high level, and the set of the first triode Q2 The electrode (LOAD-1) is at a high level, and the collector (LOAD-2) of the second triode Q3 is at a low level. At this time, the first output terminal of the control unit 14 outputs a second level signal, and the second One of the level signal and the first level signal is at a high level, and the other is at a low level.

As a result, the first level signal and the second level signal output by the control unit 14 perform different switching controls on the switching unit 12 for forward coupling and reverse coupling, thereby realizing the control of the first electrical connector. The switching of the connection sequence of the second end and the fourth end of 11 ensures that the connection sequence of the second end b and the fourth end a of the first electrical connector 11 can be connected with The terminals of the second electrical connector 20 are in the same sequence, thereby achieving conduction.

6, in one embodiment of the present invention, the control unit 14 includes a microprocessor U2, the first pin VDD of the microprocessor U2 is connected to the first voltage source, the microprocessor U2 The tenth pin GND is grounded, the second pin P02/XOUT and the third pin P04/RST/VPP of the microprocessor U2 are jointly used as the input end of the control unit 14, the second pin of the microprocessor U2 The pin P02/XOUT is connected to the collector of the first transistor Q2, and the third pin P04/RST/VPP of the microprocessor U2 is connected to the collector of the second transistor Q3 through a The eighth resistor R8 is connected to the first voltage source, the fourth pin P53/BZ1/PW M1 of the microprocessor U2 is connected to the gate of the first MOS transistor Q1, and the fifth pin of the microprocessor U2 The pin P54/BZ0/PW M0 is connected to the gate of the second MOS transistor Q4, the ninth pin P44/AIN4 of the microprocessor U2 is connected to the other end of the third resistor R3 and passed through the fourth The capacitor C4 is grounded, and the eighth pin P42 / AIN2 of the microprocessor U is used as the first output terminal of the control unit 14 .

When combined in the forward direction, the gate (ON-1) of the first MOS transistor Q1 is at a high level, the gate (ON-2) of the second MOS transistor Q4 is at a low level, and the set of the first triode Q2 The electrode (LOAD-1) is at low level, the collector (LOAD-2) of the second triode Q3 is at high level, and the eighth pin P42/AIN2 of the microprocessor U2 outputs low level.

When combined in reverse, the gate (ON-1) of the first MOS transistor Q1 is at low level, the gate (ON-2) of the second MOS transistor Q4 is at high level, and the set of the first triode Q3 The electrode (LOAD-1) is at a high level, the collector (LOAD-2) of the second triode Q4 is at a low level, and the eighth pin P42/AIN2 of the microprocessor U outputs a high level.

The ninth pin P44/AIN4 of the microprocessor U2 is used to detect the voltage value of the third resistor R3 other end (OCP), when the detected voltage value is greater than the set value, the fourth pin P53/AIN4 of the microprocessor U2 BZ1/PW M1 controls the gate (ON-1) of the first MOS transistor Q1 to be a low level disconnect output, or the fifth pin P54/BZ0/PW M0 of the microprocessor U2 controls the gate of the second MOS transistor Q4 Pole (ON-2) is low level to disconnect the output, thereby realizing over-current protection and short-circuit protection.

Referring to Fig. 1, in one embodiment of the present invention, an LED indicator circuit 15 is also included, and the LED indicator circuit 15 is connected to the second output terminal of the control unit 14 to display the first electrical connector 11 working status. In this way, the current working state can be distinguished through the LED indicating circuit 15, which is more convenient to use.

Referring to Fig. 7, in one embodiment of the present invention, the sixth pin P40/AIN0/VREFH and the seventh pin P41/AIN1 of the microprocessor U are jointly used as the second output end of the control unit 14 . The LED indicator circuit 15 includes a first light emitting diode LED1 and a second light emitting diode LED2, the anode of the first light emitting diode LED1 is connected to the sixth pin P40/AIN0/ of the microprocessor U through a fifth resistor R5 VREFH is connected, the anode of the second light emitting diode LED2 is connected with the seventh pin P41/AIN1 of the microprocessor U2 through a sixth resistor R6, the cathode of the first light emitting diode LED1 and the second light emitting diode LED2 grounded.

When charging forwardly or reversely, the sixth pin P40/AIN0/VREFH of the microprocessor U2 outputs a low level, the seventh pin P41/AIN1 outputs a high level, and the second light-emitting diode LED2 lights up. The first light-emitting diode LED1 is turned off. When fully charged, the sixth pin P40/AIN0/VREFH of the microprocessor U2 outputs a high level, the seventh pin P41/AIN1 outputs a low level, the second light-emitting diode LED2 goes out, and the first light-emitting diode LED1 light up. Preferably, the first light emitting diode LED1 is green, and the second light emitting diode LED2 is red. When over-current or short-circuit occurs, the second light-emitting diode LED2 will flicker to improve the prompt function of over-current or short-circuit.

Referring to Fig. 10 to Fig. 11, the embodiment of the present utility model provides an intelligent charging device, including a second electrical connector 20, a third electrical connector 21, and a power supply with positive and negative plug-in identification as described in the above-mentioned embodiments. device 100.

The second electrical connector 20 is suitable for combining with the first electrical connector 11 in the reversible plug-in identifiable power supply device 100; the third electrical connector 21 is connected with the second electrical connector 20, and is suitable for It is connected to the charging interface 301 of the electronic device 300 .

In a specific application, the second electrical connector 20 and the third electrical connector 21 may be connected to the power transmission component 200, for example, the power transmission component 200 is a data line (as shown in FIG. 10 ), and the second electrical connector 20 Connected to one end of the data line, the third electrical connector 21 is connected to the other end of the data line, and the third electrical connector 21 is suitable for being connected to the charging interface 301 of the electronic device 300 . Or the power transmission part 200 is a replaceable adapter plug (as shown in FIG. 11 ), the second electrical connector 20 is connected to one end of the replaceable adapter plug, and the third electrical connector 21 is connected to the other end of the replaceable adapter plug. At one end, the third electrical connector 21 is adapted to be connected to the charging interface 301 of the electronic device 300 .

Advantageously, in one embodiment of the present invention, the second electrical connector 20 is combined with the first electrical connector 11 in the power supply device 100 recognizable by reversible insertion in a magnetic adsorption manner.

The intelligent charging device provided according to the embodiment of the present invention has the above-mentioned power supply device 100 with recognizable front and back insertion. In this way, the automatic identification of front and back insertion can be realized, and the use is more convenient.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present invention. The above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the present utility model under the principle and purpose.

Claims (9)

1. A positive and negative plug-in identifiable power supply device, characterized in that it comprises: Power converters to convert alternating current to direct current; a first electrical connector adapted to be combined with a second electrical connector and having a first set of terminals, the second electrical connector having a second set of terminals; a switching unit, the switching unit is connected between the first electrical connector and the output end of the power converter; A detection unit, the input terminal of the detection unit is connected to the first electrical connector to detect the combination state of the second electrical connector and the first electrical connector, and the combination state includes positive combination and the reverse binding state; A control unit, the input terminal of the control unit is connected to the output terminal of the detection unit, the first output terminal of the control unit is connected to the switching unit, and is used to control the selectivity of the switching unit according to the combination state Connect each terminal in the first terminal group to each terminal of the output end of the power converter, so that the sequence of the terminals in the first terminal group is consistent with the sequence of the terminals in the second terminal group . 2. The reversible plug-in identifiable power supply device according to claim 1, wherein the switching unit includes an analog switch chip, and the first pin of the analog switch chip is connected to the data of the output terminal of the power converter. The positive terminal is connected, the second pin of the analog switch chip is connected to the data negative terminal of the output end of the power converter, the third pin of the analog switch chip is grounded, and the ninth pin of the analog switch chip connected to a first voltage source, the fourth pin and the seventh pin of the analog switch chip are connected to the fourth end of the first terminal group, the fifth pin and the sixth pin of the analog switch chip The pin is connected to the second end of the first terminal group, the eighth pin of the analog switch chip is grounded, and the tenth pin of the analog switch chip is connected to the first output end of the control unit; The fourth terminal of the first terminal group is adapted to be in electrical contact with the positive data terminal of the second terminal group in the forward connection, and is in electrical contact with the data positive terminal in the second terminal group in the reverse connection. The data negative end of the first terminal group is in electrical contact; the second terminal of the first terminal group is adapted to be in contact with the data negative end of the second terminal group in the forward connection, and to be in contact with the data negative end in the reverse connection. The data positive end of the second terminal group is in electrical contact; When the tenth pin of the analog switch chip is at a low level, the first pin of the analog switch chip is connected to the seventh pin of the analog switch chip, and the second pin of the analog switch chip Conducted with the sixth pin of the analog switch chip; when the tenth pin of the analog switch chip is at a high level, the first pin of the analog switch chip is connected to the fifth pin of the analog switch chip The pin is turned on, and the second pin of the analog switch chip is turned on with the fourth pin of the analog switch chip. 3. The reversible plug-in identifiable power supply device according to claim 2, wherein the input terminal of the detection unit is connected to at least one terminal of the first electrical connector, and the first electrical connector At least one terminal in the second terminal group is suitable for electrical contact with at least one terminal in the second terminal group, and the output end of the detection unit is connected to the input end of the control unit for connecting the second electrical connector Signals with different levels are output when the first electrical connector is combined forwardly and backwardly. 4. The power supply device according to claim 3, characterized in that the detection unit comprises: first triode; The first MOS transistor, the source of the first MOS transistor is connected to a first resistor and one end of a third resistor, the other end of the first resistor is grounded, and the drain of the first MOS transistor is connected to a first resistor through a first resistor. The four resistors are connected to the base of the first triode, and the emitter of the first triode is grounded; second triode; The second MOS transistor, the source of the second MOS transistor is connected to the source of the first MOS transistor, the drain of the second MOS transistor is connected to the base of the second triode through a seventh resistor pole, the emitter of the second triode is grounded; The gate of the first MOS transistor, the gate of the second MOS transistor, the collector of the first triode, the collector of the second triode and the other end of the third resistor are jointly used as the output of the detection unit end; The fifth end of the first terminal group is connected to the drain of the first MOS transistor, the first end of the first terminal group is connected to the drain of the second MOS transistor, and the first terminal group The third terminal of is connected to the second voltage source; The fifth end of the first terminal group is adapted to be in electrical contact with one of the ground end and the vacant end of the second terminal group, and the first end of the first terminal group is adapted to be in contact with the second terminal The ground terminal in the group is in electrical contact with the other of the vacant terminals, and the third terminal of the first terminal group is adapted to be in electrical contact with the power supply terminal in the second terminal group. 5. The reversible plug-in identifiable power supply device according to claim 4, wherein the control unit includes a microprocessor, the first pin of the microprocessor is connected to the first voltage source, and the microprocessor The tenth pin of the device is grounded, the second pin and the third pin of the microprocessor are jointly used as the input end of the control unit, the second pin of the microprocessor is connected to the first triode connected to the collector, the third pin of the microprocessor is connected to the collector of the second triode and connected to the first voltage source through an eighth resistor, the fourth pin of the microprocessor is connected to the first voltage source The gate of the first MOS transistor is connected, the fifth pin of the microprocessor is connected to the gate of the second MOS transistor, the ninth pin of the microprocessor is connected to the gate of the third resistor The other end is connected to the ground through the fourth capacitor, and the eighth pin of the microprocessor is used as the first output end of the control unit. 6. The power supply device according to claim 5, characterized in that it further comprises an LED indicating circuit connected to the second output terminal of the control unit for displaying the first power supply. The working state of the connector. 7. The power supply device according to claim 6, characterized in that the sixth pin and the seventh pin of the microprocessor are jointly used as the second output end of the control unit; The LED indicating circuit comprises a first light emitting diode and a second light emitting diode, the anode of the first light emitting diode is connected with the sixth pin of the microprocessor through a fifth resistor, and the anode of the second light emitting diode is It is connected to the seventh pin of the microprocessor through a sixth resistor, and the cathodes of the first light-emitting diode and the second light-emitting diode are grounded. 8. An intelligent charging device, characterized in that it comprises: As described in any one of claims 1 to 7, an identifiable power supply device can be inserted forward and backward; a second electrical connector, the second electrical connector is adapted to be combined with the first electrical connector in the reversible plug-in identifiable power supply device; A third electrical connector, the third electrical connector is connected to the second electrical connector and is adapted to be connected to a charging interface of an electronic device. 9 . The intelligent charging device according to claim 8 , wherein the second electrical connector is combined with the first electrical connector in the reversible reversible plug-in identifiable power supply device in a magnetic adsorption manner. 10 .