CN218960061U - Power receiving circuit supporting forward and reverse connection and electronic atomization terminal - Google Patents

Abstract

The application discloses a power receiving circuit supporting forward and reverse connection and an electronic atomization terminal, wherein a power receiving end of the power receiving circuit is used for supplying power to a power supply end of power supply equipment, and the power receiving circuit is electrically connected with a load; the power receiving circuit comprises a first diode driving circuit, a second diode driving circuit and an operational amplifier control circuit; the first diode driving circuit and the second diode driving circuit are connected with the operational amplifier control circuit; and the operational amplifier control circuit is used for controlling the first diode driving circuit, the second diode driving circuit and the load to be connected into an electric path when the power supply equipment is connected to the power receiving circuit in the forward direction and the power supply equipment is connected to the power receiving circuit in the reverse direction, so that the power supply equipment supplies power to the load through the power receiving circuit.

Description

Power receiving circuit supporting forward and reverse connection and electronic atomization terminal

Technical Field

The application relates to the technical field of electronic cigarettes, in particular to a power receiving circuit supporting forward and reverse connection and an electronic atomization terminal.

Background

The electronic cigarette is an electronic product imitating cigarettes, and is a product which is sucked by a user after nicotine and the like are changed into steam through means such as atomization and the like. Generally, electronic cigarettes mainly comprise a cigarette cartridge and a cigarette rod for containing a nicotine solution. The cigarette bullet is supplied with power by the cigarette stem, and can convert the liquid nicotine in the cigarette bullet into fog, thereby the user has a feeling similar to smoking when inhaling.

At present, in the electronic cigarette industry, the connection mode of cigarette bullet and tobacco stem includes multi-line, and single line communication chip or double line communication chip are generally used to the cigarette bullet chip in the middle of the cigarette bullet, and there is certain standard to the design of power supply communication's stitch and logic level in the connection mode, before formally to cigarette bullet or be used for atomizing load power supply work, often need to go on repeatedly inquiring the confirmation to the grafting state of interface through the program operation of chip between cigarette bullet and the tobacco stem, can not satisfy the demand that plug and play power supply was used after the grafting, and in order to prevent that power supply circuit damages can prohibit the tobacco stem from connecting conversely in particular, influence user's use experience sense.

Disclosure of Invention

The application discloses support positive reverse connection's power receiving circuit and electron atomizing terminal, specific technical scheme is as follows:

the power receiving end of the power receiving working circuit is used for supplying power to the power supply end of the power supply equipment, and the power receiving working circuit is electrically connected with a load; the power receiving circuit comprises a first diode driving circuit, a second diode driving circuit and an operational amplifier control circuit; the first diode driving circuit and the second diode driving circuit are connected with the operational amplifier control circuit; and the operational amplifier control circuit is used for controlling the first diode driving circuit, the second diode driving circuit and the load to be connected into an electric path when the power supply equipment is connected to the power receiving circuit in the forward direction and the power supply equipment is connected to the power receiving circuit in the reverse direction, so that the power supply equipment supplies power to the load through the power receiving circuit.

Further, the power receiving end of the power receiving circuit comprises a first power receiving end and a second power receiving end, and the power supply end of the power supply equipment comprises a first power supply end and a second power supply end; the operational amplifier control circuit is used for sequentially determining the flow directions of current in a diode arranged in the first diode driving circuit and a diode arranged in the second diode driving circuit by processing an electric signal provided by a first power supply end of the power supply equipment when the power supply equipment is connected to the power receiving circuit in the forward direction so as to realize that the electric signal provided by the first power supply end of the power supply equipment is applied to a positive input end of a load, and an electric path is formed between a negative input end of the load and the second power supply end of the power supply equipment; the operational amplifier control circuit is further used for sequentially determining the flow directions of current in a diode arranged in the second diode driving circuit and a diode arranged in the first diode driving circuit by processing the electric signal provided by the second power supply end of the power supply equipment when the power supply equipment is reversely connected to the power receiving circuit, so that the electric signal provided by the second power supply end of the power supply equipment is applied to the positive input end of the load, and an electric path is formed between the negative input end of the load and the first power supply end of the power supply equipment.

Further, the first diode driving circuit comprises a pair of diodes connected end to end and a switching tube connected with the front end and the back end of each diode; the operational amplifier control circuit comprises a first operational amplifier and a second operational amplifier; the common end of the diodes connected end to end, which are included in the first diode driving circuit, is a first power receiving end, the control end of the switching tube, which is included in the first diode driving circuit, is connected with the negative output end of the first operational amplifier, and the negative input end of the first operational amplifier is connected with the first power receiving end through a resistor; the common end of the diodes connected end to end, which are included in the second diode driving circuit, is a second power receiving end, the control end of the switching tube, which is included in the second diode driving circuit, is connected with the negative output end of the second operational amplifier, and the negative input end of the second operational amplifier is connected with the second power receiving end through a resistor; the negative input end of the first operational amplifier and the negative input end of the second operational amplifier are connected through a resistor so as to form a passage between the negative input end of the first operational amplifier and the negative input end of the second operational amplifier and generate a voltage difference value.

Further, when the first power receiving end is connected with the first power supply end and the second power receiving end is connected with the second power supply end, the first operational amplifier is used for processing the electric signal provided by the first power supply end into a first electric signal and feeding the first electric signal back to the first diode driving circuit through the negative output end so as to prevent the discharge current of the first power supply end of the power supply equipment from flowing through a diode arranged in the first diode driving circuit, and then the voltage transmitted by the first power supply end of the power supply equipment is applied to the positive input end of the load through the switch tube; the second operational amplifier is used for processing the electric signal applied to the negative input end of the second operational amplifier into a second electric signal with a voltage value lower than that of the first electric signal when the first power receiving end is connected with the first power supply end and the second power receiving end is connected with the second power supply end, and feeding back the second electric signal to the second diode driving circuit through the negative output end so as to prevent current from flowing through a diode arranged in the second diode driving circuit, and then applying the electric signal transmitted by the second power supply end of the power supply equipment to the negative input end of the load through the switch tube; the first power supply end is a power supply anode of the power supply equipment, the second power supply end is a power supply cathode of the power supply equipment, and when the first power receiving end is connected with the first power supply end and the second power receiving end is connected with the second power supply end, the power supply equipment is positively connected to the power receiving circuit.

Further, the first diode driving circuit comprises two switching tubes with opposite polarities, and the second diode driving circuit comprises two switching tubes with opposite polarities; the absolute value of the difference between the voltage value of the first electric signal output by the negative output end of the first operational amplifier and the voltage value of the source electrode of a corresponding switch tube in the first diode driving circuit is larger than a first preset conducting voltage threshold value, so that the voltage value of a first power supply end of power supply equipment is equal to the voltage value of a positive input end of a load; the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the other switching tube in the first diode driving circuit is smaller than a second preset conducting voltage threshold value, so that the electric signal output by the first power supply end of the power supply equipment is not applied to the negative input end of the load; the absolute value of the difference between the voltage value of the second electric signal output by the negative output end of the second operational amplifier and the source voltage value of one of the switching tubes in the second diode driving circuit is larger than a second preset conducting voltage threshold value, so that the voltage value of the second power supply end of the power supply equipment is equal to the voltage value of the negative input end of the load; the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of another switching tube in the second diode driving circuit is smaller than the first preset conducting voltage threshold value, so that the electric signal existing at the second power supply end of the power supply equipment is not applied to the positive input end of the load.

Further, when the first power receiving end is connected with the second power supplying end and the second power receiving end is connected with the first power supplying end, the second operational amplifier is used for processing the electric signal provided by the first power supplying end into a first electric signal and feeding the first electric signal back to the second diode driving circuit through the negative output end so as to realize that the discharging current of the first power supplying end of the power supplying equipment does not flow through a diode arranged in the second diode driving circuit, and the electric signal transmitted by the first power supplying end of the power supplying equipment is applied to the positive input end of the load; the first operational amplifier is used for processing the electric signal applied by the negative input end of the first operational amplifier into a second electric signal with a voltage value lower than that of the first electric signal when the first power receiving end is connected with the second power supply end and the second power receiving end is connected with the first power supply end, and feeding back the second electric signal to the first diode driving circuit through the negative output end so as to prevent current from flowing through a diode arranged in the first diode driving circuit, and the electric signal transmitted by the second power supply end of the power supply equipment is applied to the negative input end of the load, wherein the voltage value of the electric signal at the second power supply end of the power supply equipment is lower than that of the second electric signal; the voltage value of the electrical signal at the first power supply terminal is greater than the voltage value of the electrical signal at the second power supply terminal; the first power supply end is a power supply anode of the power supply equipment, the second power supply end is a power supply cathode of the power supply equipment, and the power supply equipment is reversely connected to the power receiving circuit when the first power receiving end is connected with the second power supply end and the second power receiving end is connected with the first power supply end.

Further, the first diode driving circuit comprises two switching tubes with opposite polarities, and the second diode driving circuit comprises two switching tubes with opposite polarities; the absolute value of the difference between the voltage value of the first electric signal output by the second operational amplifier and the voltage value of the source electrode of a corresponding switching tube in the second diode driving circuit is larger than a first preset conducting voltage threshold value, so that the voltage value of a first power supply end of power supply equipment is equal to the voltage value of a positive input end of a load; the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the other switching tube in the second diode driving circuit is smaller than a second preset conducting voltage threshold value, so that the electric signal output by the first power supply end of the power supply equipment is not applied to the negative input end of the load; the absolute value of the difference between the voltage value of the first electric signal output by the first operational amplifier and the source voltage value of one of the switching tubes in the first diode driving circuit is larger than a second preset conducting voltage threshold value, so that the voltage value of the second power supply end of the power supply equipment is equal to the voltage value of the negative input end of the load; the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of the other switching tube in the first diode driving circuit is smaller than a first preset conducting voltage threshold value, so that the electric signal existing at the second power supply end of the power supply equipment is not applied to the positive input end of the load.

Further, the operational amplifier control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a ninth resistor; the first operational amplifier and the second operational amplifier are both differential operational amplifiers; the first power receiving end is connected with the second power receiving end through a first resistor so as to form a power supply loop among the first power supply end, the first power receiving end, the second power supply end and the second power receiving end; one end of the second resistor is connected with the first power receiving end, the other end of the second resistor is connected with the negative input end of the first operational amplifier, the positive output end of the first operational amplifier is connected to the negative input end of the first operational amplifier through the fifth resistor, one end of the sixth resistor is grounded, the other end of the sixth resistor is connected with the positive input end of the first operational amplifier, and the negative output end of the first operational amplifier is connected to the positive input end of the first operational amplifier through the ninth resistor; one end of the third resistor is connected with the second power receiving end, the other end of the third resistor is connected with the negative input end of the second operational amplifier, the positive output end of the second operational amplifier is connected to the negative input end of the second operational amplifier through the fourth resistor, one end of the seventh resistor is grounded, the other end of the seventh resistor is connected with the positive input end of the second operational amplifier, and the negative output end of the second operational amplifier is connected to the positive input end of the second operational amplifier through the eighth resistor.

Further, the positive power supply end of the first operational amplifier and the positive power supply end of the second operational amplifier are both connected with the positive input end of the load; the negative power supply end of the first operational amplifier and the negative power supply end of the second operational amplifier are grounded; the common-mode input end of the first operational amplifier and the common-mode input end of the second operational amplifier are connected with reference voltage signals; the voltage value of the signal output by the negative output end of the first operational amplifier is smaller than the voltage value of the reference voltage signal input by the first operational amplifier, the resistance value of the fifth resistor is equal to the resistance value of the ninth resistor, and the resistance value of the second resistor is equal to the resistance value of the sixth resistor; the voltage value of the signal output by the negative output end of the second operational amplifier is smaller than the voltage value of the reference voltage signal input by the second operational amplifier, the resistance value of the fourth resistor is equal to the resistance value of the eighth resistor, the resistance value of the seventh resistor is equal to the resistance value of the third resistor, the resistance value of the eighth resistor is equal to the resistance value of the ninth resistor, and the resistance value of the sixth resistor is equal to the resistance value of the seventh resistor.

Further, the two switching tubes with opposite polarities included in the first diode driving circuit are a first NMOS tube and a first PMOS tube respectively, and the two switching tubes with opposite polarities included in the second diode driving circuit are a second NMOS tube and a second PMOS tube respectively; the first diode driving circuit further comprises a first diode and a second diode, wherein the forward end of the first diode is connected with the source electrode of the first NMOS tube, the reverse end of the first diode is connected with the drain electrode of the first NMOS tube, the reverse end of the first diode is connected with the forward end of the second diode, the forward end of the second diode is connected with the drain electrode of the first PMOS tube, the reverse end of the second diode is connected with the source electrode of the first PMOS tube, the grid electrode of the first NMOS tube is connected with the grid electrode of the first PMOS tube, the grid electrode of the first PMOS tube and the grid electrode of the first NMOS tube are both control ends of a switch tube in the first diode driving circuit, and the reverse end of the first diode and the forward end of the second diode are both connected to the first power receiving end; the positive end of the first diode is connected with the negative input end of the load, and the negative end of the second diode is connected with the positive input end of the load; the second diode driving circuit further comprises a third diode and a fourth diode, wherein the forward end of the third diode is connected with the source electrode of the second NMOS tube, the reverse end of the third diode is connected with the drain electrode of the second NMOS tube, the reverse end of the third diode is connected with the forward end of the fourth diode, the forward end of the fourth diode is connected with the drain electrode of the second PMOS tube, the reverse end of the fourth diode is connected with the source electrode of the second PMOS tube, the grid electrode of the second NMOS tube is connected with the grid electrode of the second PMOS tube, the grid electrode of the second PMOS tube and the grid electrode of the first NMOS tube are both control ends of a switch tube in the second diode driving circuit, and the reverse end of the third diode and the forward end of the fourth diode are both connected to the second power receiving end; the positive terminal of the third diode is connected with the negative input terminal of the load, and the negative terminal of the fourth diode is connected with the positive input terminal of the load.

The electronic atomization terminal comprises a power supply device, a load and the power receiving circuit, wherein the power supply device is plugged into the power receiving circuit through an interface, or the power receiving circuit is plugged into the power supply device through an interface.

Further, the electronic atomization terminal comprises a tobacco stem and a tobacco cartridge, wherein the tobacco stem is provided with a parent interface, and the tobacco cartridge is provided with a pluggable parent interface; the power supply equipment is arranged in the cigarette rod, and the power receiving circuit and the load are arranged in the cigarette bullet, so that when the cigarette rod is inserted into the cigarette bullet, the power supply equipment is connected into the power receiving circuit; the load is used for receiving the power provided by the power supply equipment under the condition that the power supply equipment is connected to the power receiving circuit in the forward direction or connected to the power receiving circuit in the reverse direction, so that the aerosol source is continuously atomized.

The technical effect of this application lies in:

according to the technical scheme, two pairs of diodes and two pairs of switching tubes are used for simultaneously providing voltages of a first power supply end and a second power supply end for an operational amplifier, the operational amplifier is used for adjusting voltage feedback provided by the first power supply end and the second power supply end to enable only one switching tube to be conducted in each pair of switching tubes, and then the positive input end of a load can be connected to the positive electrode of the power supply device and the negative input end of the load can be connected to the negative electrode of the power supply device on the basis of unidirectional conductivity of the diodes and the short-circuit effect of the switching tubes on the diodes no matter the power supply device is connected positively or reversely; therefore, the positive electrode and the negative electrode do not need to be distinguished, and the voltage at the two ends of the power receiving end is equal to the voltage at the two ends of the power supply end.

Compared with the prior art, when the power supply equipment is electrically connected with the power receiving circuit through the interface, the front and back connection condition of the corresponding power supply port is not required to be identified in advance through a built-in program, and if the matched tobacco stem and the tobacco cartridge are matched and the power supply circuit and the power supply port in the tobacco cartridge are fixed, the plug and play power supply can be realized no matter the front connection or the reverse connection, the atomization working speed of the smoke agent source is accelerated, the electronic cigarette is pumped quickly and conveniently, and the experience of a user is improved; the circuit overcomes the inconvenience that a chip is required to carry out blind insertion detection in the prior art, the operational amplifier built in the power receiving circuit has low price and large product quantity, and the performance index of the circuit can be suitable for outputting the common high and low level for driving the switching tube to be turned on and off.

Drawings

Fig. 1 is a schematic diagram of a power receiving circuit supporting forward and reverse connections according to an embodiment.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As an embodiment, in order to enable a load to be rapidly and normally discharged when the interfaces are connected in the forward and reverse directions, a power receiving working circuit supporting the forward and reverse directions is disclosed, wherein a power receiving end of the power receiving working circuit is used for supplying power to a power supply end of a power supply device, the power receiving working circuit can be plugged into the power supply device (including a voltage source) through the interfaces, or the power supply device (including the voltage source) can be plugged into the power receiving working circuit through the interfaces, and therefore the power receiving end of the power receiving working circuit is electrically connected with the power supply end of the power supply device to form a power supply loop. The power supply equipment is internally provided with a circuit control board for supplying power and communicating with the power receiving circuit, and the power supply end is coupled with a power supply circuit in the circuit control board; the power receiving circuit is electrically connected with the load, the power supply equipment and the power receiving circuit can be positioned in two different chambers and are respectively provided with a pluggable interface, the power receiving circuit is positioned on the printed circuit board, and the power receiving end can be arranged at the edge position of the printed circuit board and is electrically insulated from the chamber outside the circuit; when the device is applied to the electronic cigarette, the power supply equipment is arranged in the cigarette rod, the power receiving circuit and the load for atomizing are arranged in the cavity of the cigarette cartridge, and the load can be a heating resistor with positive and negative input ends, an indicator lamp or an oscillating element. The power receiving end of the power receiving circuit is in physical contact with the power supply end of the power supply equipment in an interface plugging mode so as to establish electrical connection.

In this embodiment, the power receiving end of the power receiving circuit is located on or electrically connected with the pluggable interface; the power supply end of the power supply device is positioned on or electrically connected with an interface matched with the pluggable interface. Specifically, the power supply equipment is provided with a first interface, and the power supply end is arranged in the first interface or is connected with a port with the same electrical property in the first interface; the powered device where the powered circuit is located is provided with a second interface, the powered end of the powered circuit is arranged in the second interface or is connected with a port with the same electrical property in the second interface, for example, in the cigarette bullet, the first interface and the second interface can be a butt joint interface between the cigarette stem and the cigarette bullet, namely, a matched father interface and a mother interface, and in a single aspect, a solid interface (which can be provided with a needle) is a male interface, and a hollow interface (which is provided with a hole site inwards) is called a mother interface. Preferably, when the first interface is a parent interface of the USB interface, the second interface is a parent interface of the USB interface; or when the first interface is a parent interface of the USB interface, the second interface is a parent interface of the USB interface. The power supply device charges or discharges the power receiving circuit in a mode that the interfaces are connected in the forward and reverse directions, and in the embodiment, the power supply device does not conduct distinguishing identification of the forward and reverse directions of the interfaces before normally supplying power to the load, and plug and play is achieved.

As shown in fig. 1, the power receiving circuit includes a first diode driving circuit 101, a second diode driving circuit 103, and an operational amplifier control circuit 102; the first diode driving circuit 101 and the second diode driving circuit 103 are both connected to the op-amp control circuit 102. The first diode driving circuit 101 and the second diode driving circuit 103 both include a diode and a switch tube, the diode has a positive end and a negative end, the switch tube may adopt a transistor, a MOS tube, etc. having three ports, the op-amp control circuit 102 includes at least two op-amp structures for controlling the first diode driving circuit 101 and the second diode driving circuit 103, respectively, so as to ensure that an electrical path is formed between a positive input end v+ of the load U1 and a positive end of a power supply of the power supply device when the power supply device is positively and negatively connected to the power receiving working circuit, and an electrical path is formed between a negative input end V-of the load U1 and a negative end of the power supply device, so that the power supply device normally supplies the load U1 with the same voltage as the voltage between the first power supply end UD1 and the second power supply end UD2 of the power supply device through the power receiving working circuit, wherein the voltage between the first power supply end UD1 and the second power supply end UD2 of the power supply device is preset to be a voltage capable of driving the load to work normally. The operational amplifier structure is designed to process signals to control the first diode driving circuit 101 and the second diode driving circuit 103, the forward and reverse plug monitoring of the interfaces and the power distribution of different interface states are not required to be additionally added, the power supply voltage arranged in the power supply equipment can be transmitted in a lossless manner, the normal power supply to the load can be completed through plug-in to drive the load to work, the circuit structure is simplified, and repeated inquiry and confirmation of the plug-in state of the interfaces and the power distribution flow are avoided through the running of a program in a chip.

In the above embodiment, the power receiving end of the power receiving circuit includes a first power receiving end VD1 and a second power receiving end VD2, and the power supplying end of the power supplying device includes a first power supplying end UD1 and a second power supplying end UD2; specifically, when the first power supply terminal UD1 is a positive power supply terminal provided in the power supply device, the second power supply terminal UD2 is a negative power supply terminal provided in the power supply device; when the first power supply terminal UD1 is a negative power supply terminal, the second power supply terminal UD2 is a positive power supply terminal, and vice versa. Wherein, the first power supply terminal UD1 is connected with the first power receiving terminal VD1, and when the second power supply terminal UD2 is connected with the second power receiving terminal VD2, the power supply device is connected to the power receiving circuit in a forward direction; the first power supply terminal UD1 is connected to the second power receiving terminal VD2, and when the second power supply terminal UD2 is connected to the first power receiving terminal VD1, the power supply device is reversely connected to the power receiving operation circuit.

In some embodiments, when the power supply device is connected to the power receiving circuit in the forward direction, the operational amplifier control circuit is configured to sequentially determine the flow direction of the current in the diode provided in the first diode driving circuit 101 and the diode provided in the second diode driving circuit 103 by processing the electrical signal provided by the first power supply terminal UD1 (generated by discharging), specifically, after the first power receiving terminal VD1 receives the electrical signal provided by the first power supply terminal UD1, the operational amplifier control circuit may perform a comparison operation on the electrical signal provided by the first power supply terminal UD1 and the reference voltage signal, for example, and process the electrical signal transmitted by the first diode driving circuit into a level signal lower than the reference voltage, and use the level signal lower than the reference voltage to determine the flow direction of the current in the diode provided in the first diode driving circuit, which is connected to the positive input terminal of the load and the first power supply terminal of the power supply device; then, the operational amplifier control circuit may also perform a comparison operation on the electrical signal provided by the second power supply terminal UD2 and the reference voltage signal, process the electrical signal transmitted by the second diode driving circuit into a level signal lower than the reference voltage, and determine the current flowing direction in the diode arranged in the second diode driving circuit by using the level signal lower than the reference voltage, so as to connect the second power supply terminal of the power supply device with the negative input terminal of the load. In summary, the operational amplifier control circuit sequentially obtains the control right of the current flowing through the diode arranged in the first diode driving circuit and the control right of the current flowing through the diode arranged in the second diode driving circuit, the currents can flow back to the power supply equipment through the power receiving circuit to form a power supply loop, the electric signals provided by the first power supply end UD1 and the second power supply end UD2 are guided to be applied to the load through the power supply loop, so that the electric signals provided by the first power supply end of the power supply equipment are applied to the positive input end of the load, and an electric path is formed between the negative input end of the load and the second power supply end of the power supply equipment. The power supply equipment outputs power to a load through the power receiving circuit, wherein the electric signal can be a voltage signal; the first power supply end UD1 is a positive power supply end arranged in the power supply equipment, and the second power supply end UD2 is a negative power supply end arranged in the power supply equipment.

In some embodiments, when the power supply device is reversely connected to the power receiving circuit, the operational amplifier control circuit is further configured to sequentially determine a current flowing in a diode provided in the second diode driving circuit and a diode provided in the first diode driving circuit by processing an electrical signal (including a level signal generated by discharging) provided by the second power supply terminal UD2 of the power supply device, specifically, after the second power receiving terminal VD2 receives the electrical signal provided by the first power supply terminal UD1, perform a comparison operation on the electrical signal provided by the first power supply terminal UD1, for example, the operational amplifier control circuit may perform a comparison operation on the electrical signal provided by the first power supply terminal UD1 and a reference voltage signal, and process the electrical signal transmitted by the second diode driving circuit into a level signal lower than a reference voltage, and determine the current flowing in the diode provided in the second diode driving circuit by using the level signal lower than the reference voltage, so as to connect the first power supply terminal of the power supply device and the positive input terminal of the load; then, the operational amplifier control circuit may also perform a comparison operation on the electrical signal provided by the second power supply terminal UD2 and the reference voltage signal, process the electrical signal transmitted by the first diode driving circuit into a level signal lower than the reference voltage, and determine the current flowing direction in the diode provided in the first diode driving circuit by using the level signal lower than the reference voltage, and communicate the second power supply terminal of the power supply device with the positive input terminal of the load and communicate the second power supply terminal of the power supply device with the negative input terminal of the load. In summary, the operational amplifier control circuit sequentially obtains the control right of the current flowing through the diode arranged in the second diode driving circuit and the control right of the current flowing through the diode arranged in the first diode driving circuit, the currents can flow back to the power supply equipment through the power receiving circuit to form a power supply loop, the electric signals provided by the first power supply end UD1 and the second power supply end UD2 are guided to be applied to the load through the power supply loop, so that the electric signals provided by the second power supply end of the power supply equipment are applied to the positive input end of the load, and an electric path is formed between the negative input end of the load and the first power supply end of the power supply equipment. Wherein the electrical signal may be a voltage signal; the first power supply end UD1 is a positive power supply end arranged in the power supply equipment, and the second power supply end UD2 is a negative power supply end arranged in the power supply equipment.

As an embodiment, as shown in fig. 1, the first diode driving circuit 101 includes a pair of diodes connected end to end, and a switching tube connected to the opposite ends of each diode; the operational amplifier control circuit 102 includes a first operational amplifier Amp1 and a second operational amplifier Amp2. The common end of the diodes connected end to end, which are included in the first diode driving circuit 101, is a first power receiving end VD1, and the control end of the switching tube, which is included in the first diode driving circuit 101, is connected with the negative output end of the first operational amplifier Amp 1; the negative input end of the first operational amplifier Amp1 is connected with the first power receiving end VD1 through a resistor R2, and if necessary, the negative input end of the first operational amplifier Amp1 is also connected with the positive output end of the first operational amplifier Amp1 through a feedback resistor R5 to form a feedback loop, and the negative output end of the first operational amplifier Amp1 is also connected with the negative output end of the first operational amplifier Amp1 through a feedback resistor R9 to form another feedback loop, so as to perform feedback processing on the electric signal provided by the first power supply end VD1 of the power supply device, obtain the electric signal for turning on or off a switching tube included in the first diode driving circuit 101, improve the capacity of the electric signal provided by the first power supply end VD1 of the power supply device, and accelerate the voltage output speed of the first diode driving circuit 101 to the load U1.

As shown in fig. 1, the common end of the diodes connected end to end, which are included in the second diode driving circuit 103, is a second power receiving end VD2, the control end of the switching tube included in the second diode driving circuit 103 is connected to the negative output end of the second operational amplifier Amp2, the negative input end of the second operational amplifier Amp2 is connected to the second power receiving end VD2 through a resistor R4, if necessary, the negative input end of the second operational amplifier Amp2 is also connected to the positive output end+ of the second operational amplifier Amp2 through a feedback resistor R4 to form a feedback loop, the negative output end of the second operational amplifier Amp2 is also connected to the negative output end of the second operational amplifier Amp2 through a feedback resistor R8 to form another feedback loop, so as to perform feedback processing on the electric signal provided by the second power supply end VD2 of the power supply device, obtain the electric signal for turning on or off the switching tube included in the second diode driving circuit 103, and if necessary, the load of the second operational amplifier Amp driving circuit VD1 is increased.

The negative input end of the first operational amplifier Amp1 is connected with the negative input end of the second operational amplifier Amp2 through a resistor, specifically, the second power supply end VD2 is connected with the first power supply end VD1 through a resistor R1, so that after the power supply equipment is connected with a power receiving circuit in a positive-reverse mode, current formed by discharging of the power supply equipment can flow back to the other power supply end of the power supply equipment from one power supply end of the power supply equipment through the resistor R1, a path is formed between the negative input end of the first operational amplifier Amp1 and the negative input end of the second operational amplifier Amp2, and a voltage difference value is generated, so that a complete power supply loop is formed.

With respect to the forward and reverse connections of the foregoing embodiments, it should be noted that, when the first power receiving end VD1 is connected to the first power supplying end UD1 and the second power receiving end VD2 is connected to the second power supplying end UD2, the power supplying device is connected to the power receiving operation circuit in a forward direction, where the first power supplying end UD1 is a positive end connected to a power supply (a positive end of a power supply provided in the power supplying device), and the second power supplying end UD2 is a negative end connected to the power supply (a negative end of the power supply provided in the power supplying device); in contrast, in some embodiments, when the first power receiving end VD1 is connected to the first power supplying end UD1 and the second power receiving end VD2 is connected to the second power supplying end UD2, the power supplying device is reversely connected to the power receiving circuit, where the first power supplying end UD1 is connected to the negative end of the power supply (the negative end of the power supply provided in the power supplying device), the second power supplying end UD2 is connected to the positive end of the power supply (the positive end of the power supply provided in the power supplying device), that is, a path is formed between the first power receiving end VD1 and the positive end of the power supply provided in the power supplying device, and a path is formed between the second power receiving end VD2 and the negative end of the power supply provided in the power supplying device.

With respect to the forward and reverse connections of the foregoing embodiments, it should be noted that, when the first power receiving end VD1 is connected to the second power supplying end UD2 and the second power receiving end VD2 is connected to the first power supplying end UD1, the power supplying device is reversely connected to the power receiving operation circuit, where the first power supplying end UD1 is a positive end connected to a power supply (a positive end of a power supply provided in the power supplying device), and the second power supplying end UD2 is a negative end connected to the power supply (a negative end of the power supply provided in the power supplying device); conversely, in some embodiments, when the first power receiving end VD1 is connected to the second power supplying end UD2 and the second power receiving end VD2 is connected to the first power supplying end UD1, the power supplying device is connected to the power receiving working circuit in a forward direction, where the first power supplying end UD1 is connected to a negative end of a power supply (a negative end of a power supply provided in the power supplying device), the second power supplying end UD2 is connected to a positive end of the power supply (a positive end of the power supply provided in the power supplying device), that is, a path is formed between the first power receiving end VD1 and the negative end of the power supply provided in the power supplying device, and a path is formed between the second power receiving end VD2 and the positive end of the power supply provided in the power supplying device.

As a first embodiment of the positive connection, the voltage value of the electrical signal at the first power supply terminal UD1 is the positive voltage value of the power supply device, the voltage value of the electrical signal at the second power supply terminal UD2 is the negative voltage value of the power supply device, wherein the voltage between the first power supply terminal UD1 and the second power supply terminal UD2 of the power supply device is the rated working voltage preset as the load, so that the power supply voltage of the power supply device drives the load to work normally when applied to the positive and negative ends of the load without loss. When the first power receiving end VD1 is connected to the first power supplying end UD1 and the second power receiving end VD2 is connected to the second power supplying end UD2, the power supplying device is connected to the power receiving circuit in the forward direction. The first operational amplifier Amp1 is configured to process an electrical signal provided by the first power supply terminal UD1 (regarded as an electrical signal provided by the first power supply terminal VD 1) into a first electrical signal and feed back the first electrical signal to the first diode driving circuit 101 from a negative output terminal when the first power supply terminal VD1 is connected to the first power supply terminal UD1 and the second power supply terminal VD2 is connected to the second power supply terminal UD2, and the negative output terminal of the first operational amplifier Amp1 outputs the signal to a control terminal of a switching tube included in the first diode driving circuit 101, corresponding to fig. 1; in this embodiment, the negative output-output signal of the first operational amplifier Amp1 is a processing result of the electric signal transmitted by the first power supply terminal UD1 (regarded as the first power receiving terminal VD 1) by the first operational amplifier Amp1 and the feedback resistor; specifically, the first diode driving circuit 101 includes two switching transistors with opposite polarities, and the second diode driving circuit 103 includes two switching transistors with opposite polarities, then there is: the absolute value of the difference between the voltage value of the first electric signal output by the negative output end of the first operational amplifier Amp1 and the voltage value of the source electrode of the corresponding switch tube MP1 in the first diode driving circuit is larger than a first preset conducting voltage threshold, the switch tube MP1 is conducted, the diode D2 arranged in the first diode driving circuit is short-circuited when the switch tube MP1 is conducted, the discharge current of the first power supply end UD1 (regarded as the voltage value of the first power receiving end VD 1) of the power supply equipment does not flow through the diode D2 arranged in the first diode driving circuit, and then the voltage transmitted by the first power supply end UD1 (regarded as the voltage value of the first power receiving end VD 1) of the power supply equipment is applied to the positive input end v+ of the load through the switch tube MP1, namely the voltage transmitted by the first power receiving end VD1 is applied to the positive input end v+ of the load, so that the voltage value of the first power supply end UD1 of the power supply equipment (regarded as the voltage value of the first power receiving end VD 1) is equal to the voltage value of the positive input end v+ of the load U1. Meanwhile, the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the other switching tube MN1 in the first diode driving circuit is smaller than a second preset on voltage threshold value, and the switching tube MN1 is turned off, so that the electric signal output by the first power supply end UD1 (regarded as the first power receiving end VD 1) of the power supply equipment is not applied to the negative input end V-of the load U1 through the switching tube MN1, and the electrode is prevented from burning out the load instead; further, because of the unidirectional conductivity of the diode D1, the discharge current of the first power supply terminal UD1 (regarded as the first power receiving terminal VD 1) of the power supply device does not flow through the diode D1 provided in the first diode driving circuit, so that the electric signal transmitted by the first power supply terminal UD1 of the power supply device is not transmitted to the negative input terminal V-of the load through the diode D1, and the first power receiving terminal VD1 is not electrically connected to the negative input terminal V-of the load, thereby avoiding the electrode from being connected to burn the load. The types of the switch tube MN1 and the switch tube MP1 are different, and it is determined that the threshold voltage values required for conducting (opening) the switch tube MN1 and the switch tube MP1 are different, the threshold voltage required for conducting (opening) the P-type MOS tube is equal to the first preset conducting voltage threshold, and the threshold voltage required for conducting (opening) the N-type MOS tube is equal to the second preset conducting voltage threshold. On this basis, when the first power receiving end VD1 is connected to the first power supplying end UD1 and the second power receiving end VD2 is connected to the second power supplying end UD2, the negative input end-applied electric signal of the second operational amplifier Amp2 is processed into a second electric signal with a voltage value lower than that of the first electric signal and fed back to the second diode driving circuit 103 by the negative output end-applied electric signal, wherein the negative input end-applied electric signal of the second operational amplifier Amp2 can be regarded as a voltage division result of the electric signal transmitted by the first power supplying end UD1 (regarded as the first power receiving end VD 1) in the resistor R1 and the resistor R3, and the voltage value of the negative input end-of the second operational amplifier Amp2 is smaller than that of the first power supplying end UD1 (regarded as the first power receiving end VD 1), and the negative output end-output electric signal of the second operational amplifier Amp2 is a processed result of the electric signal of the second electric signal belonging to the second operational amplifier Amp2 on the negative input end thereof; before discharging the load U1, the voltage value at the negative input terminal V-of the load U1 is lower than the voltage value of the second electrical signal, the absolute value of the difference between the voltage value of the second electrical signal output by the negative output terminal of the second operational amplifier Amp2 and the source voltage value of one of the switching tubes MN2 in the second diode driving circuit is greater than a second preset conducting voltage threshold value, then the switching tube MN2 is conducted, the diode D3 arranged in the second diode driving circuit is short-circuited, and current does not flow through the diode D3 and the diode D4 arranged in the second diode driving circuit, but the second power receiving terminal VD2 (or the second power supply terminal UD2 of the power supply device) is communicated with the negative input terminal V-of the load U1 through the switching tube MN2, so that the voltage value of the second power supply terminal UD2 of the power supply device is equal to the voltage value of the negative input terminal V-of the load U1; the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of the other switching tube MP2 in the second diode driving circuit is smaller than the first preset conducting voltage threshold value, and if the switching tube MP2 is turned off, the electric signal at the second power supply end UD2 of the power supply device is not applied to the positive input end v+ of the load U1 through the switching tube MP2, wherein the types of the switching tube MN2 and the switching tube MP2 are different, and the threshold voltage values required for conducting (opening) the switching tube MN2 and the switching tube MP2 are determined to be different. Preferably, when the voltage value at the positive input terminal v+ of the load U1 connected to the positive terminal of the diode D4 (considered as being equal to the voltage value at the first power supply terminal UD 1) is higher than the voltage value at the second power supply terminal UD2 (corresponding to the voltage value at the second power receiving terminal VD 2), the unidirectional conductivity of the diode D4 causes that the current cannot flow through the diode D4, so that the discharge current of the second power receiving terminal VD2 (or the second power supply terminal UD2 of the power supply device) also does not flow through the diode D4 provided in the second diode driving circuit to the positive input terminal v+ of the load U1.

As a positive second embodiment, the voltage value of the electrical signal at the first power supply terminal UD1 is the power supply negative voltage value, and the voltage value of the electrical signal at the second power supply terminal UD2 is the power supply positive voltage value. When the first power receiving end VD1 is connected to the second power supplying end UD2 and the second power receiving end VD2 is connected to the first power supplying end UD1, the power supplying device is connected to the power receiving operation circuit in a forward direction. In the specific embodiment, referring to the foregoing first embodiment of the positive connection, only the connection manner and the description of the signal flow direction of the second power supply terminal UD2 and the first power supply terminal UD1 are exchanged, and will not be described herein again.

As a first embodiment of the reverse connection, the voltage value of the electrical signal at the first power supply terminal UD1 is the positive voltage value of the power supply device, the voltage value of the electrical signal at the second power supply terminal UD2 is the negative voltage value of the power supply device, wherein the voltage between the second power supply terminal UD2 and the first power supply terminal UD1 of the power supply device is the rated working voltage preset as the load, so that the power-on working of the load is driven normally when the power supply voltage of the power supply device is applied to the positive and negative ends of the load without loss. When the first power receiving end VD1 is connected with the second power supply end UD2 and the second power receiving end VD2 is connected with the first power supply end UD1, the power supply device is reversely connected to the power receiving circuit, wherein the first power receiving end VD1 is connected with a power supply negative voltage value of the power supply device, and the second power receiving end VD2 is connected with a power supply positive voltage value of the power supply device. The second operational amplifier Amp2 is configured to process an electrical signal provided by the first power supply terminal UD1 (regarded as an electrical signal provided by the second power supply terminal VD 2) into a first electrical signal and feed back the first electrical signal to the second diode driving circuit 103 through a negative output terminal when the first power supply terminal VD1 is connected to the second power supply terminal UD2 and the second power supply terminal VD2 is connected to the first power supply terminal UD1, and corresponds to fig. 1, and the negative output terminal-output signal of the second operational amplifier Amp2 is fed to the control terminal of the switching tube included in the second diode driving circuit 103; in this embodiment, the negative output-output signal of the second operational amplifier Amp2 is a processing result of the electrical signal transmitted by the second power receiving terminal VD2 by the second operational amplifier Amp2 and a feedback resistor. Specifically, the second diode driving circuit 103 includes two switching transistors with opposite polarities, and the second diode driving circuit 103 includes two switching transistors with opposite polarities, then there is: the absolute value of the difference between the voltage value of the first electric signal output by the negative output end of the second operational amplifier Amp2 and the voltage value of the source electrode of the corresponding switch tube MP2 in the second diode driving circuit is larger than a first preset conducting voltage threshold, the switch tube MP2 is conducted, the diode D4 arranged in the second diode driving circuit is short-circuited when the switch tube MP2 is conducted, the discharging current of the second receiving end VD2 does not flow through the diode D4 arranged in the second diode driving circuit, and the voltage transmitted by the first power supply end UD1 (regarded as the second receiving end VD 2) of the power supply equipment is applied to the positive input end v+ of the load through the switch tube MP2, so that the voltage value of the first power supply end UD1 (regarded as the voltage value of the second receiving end VD 2) of the power supply equipment is equal to the voltage value of the positive input end v+ of the load U1. Meanwhile, the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the other switching tube MN2 in the second diode driving circuit is smaller than a second preset on voltage threshold value, and the switching tube MN2 is turned off, so that the electric signal output by the first power supply end UD1 (regarded as the second power receiving end VD 2) of the power supply equipment is not applied to the negative input end V-of the load U1 through the switching tube MN2, and the electrode is prevented from burning out the load instead; moreover, because of the unidirectional conductivity of the diode D3, the discharge current of the second power receiving end VD2 does not flow through the diode D3 arranged in the second diode driving circuit, so that the electric signal transmitted by the first power supply end UD1 of the power supply device is not transmitted to the negative input end V-of the load through the diode D3, and the second power receiving end VD2 is not electrically connected with the negative input end V-of the load, so that the electrode is prevented from being connected to burn out the load; the types of the switch tube MN2 and the switch tube MP2 are different, and it is determined that the threshold voltage values required for conducting (opening) the switch tube MN2 and the switch tube MP2 are different, the threshold voltage required for conducting (opening) the P-type MOS tube is equal to the first preset conducting voltage threshold, and the threshold voltage required for conducting (opening) the N-type MOS tube is equal to the second preset conducting voltage threshold. On this basis, when the first power receiving end VD1 is connected to the second power supplying end UD2, and the second power receiving end VD2 is connected to the first power supplying end UD1, the negative input end-applied electrical signal of the first operational amplifier Amp1 is processed into a second electrical signal with a voltage value lower than that of the first electrical signal, and the second electrical signal is fed back to the first diode driving circuit 101 by the negative output end-the electrical signal applied by the first operational amplifier Amp1 can be regarded as a voltage division result of the electrical signal transmitted by the second power receiving end VD2 in the resistor R1 and the resistor R2, the voltage value of the negative input end-of the first operational amplifier Amp1 is smaller than that of the second power receiving end VD2, and the second electrical signal output by the negative output end-of the first operational amplifier Amp1 is a processing result of the electrical signal belonging to the negative input end of the first operational amplifier Amp1, and the voltage value of the second electrical signal is smaller than that of the first electrical signal; before discharging the load U1, the voltage value at the negative input terminal V-of the load U1 is lower than the voltage value of the second electrical signal, the absolute value of the difference between the voltage value of the second electrical signal output by the negative output terminal of the first operational amplifier Amp1 and the source voltage value of one of the switching tubes MN1 in the first diode driving circuit is greater than a second preset conducting voltage threshold value, then the switching tube MN1 is conducted, the diode D1 arranged in the first diode driving circuit is short-circuited, and current does not flow through the diode D1 and the diode D2 arranged in the second diode driving circuit, but the first power receiving terminal VD1 is communicated with the negative input terminal V-of the load U1 through the switching tube MN1, so that the voltage value of the first power supply terminal UD1 of the power supply equipment is equal to the voltage value of the negative input terminal V-of the load U1; the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of the other switching tube MP1 in the first diode driving circuit is smaller than a first preset conducting voltage threshold value, and the switching tube MP1 is turned off, so that the electric signal existing at the first power receiving end VD1 is not applied to the positive input end V+ of the load U1 through the switching tube MP1, and the electrode is prevented from being connected to burn out the load instead. Preferably, when the voltage value at the positive input terminal v+ of the load U1 connected to the positive terminal of the diode D2 is higher than the voltage value at the first power supply terminal UD1 (corresponding to the voltage value at the first power receiving terminal VD 1), the unidirectional conductivity of the diode D2 results in that the current cannot flow through the diode D2, so that the discharge current of the first power receiving terminal VD1 (or the first power supply terminal UD1 of the power supply device) does not flow through the diode D2 provided in the first diode driving circuit and is led to the positive input terminal v+ of the load U1, thereby avoiding the electrode from burning the load instead.

As a second embodiment of the reverse connection, the voltage value of the electrical signal at the first power supply terminal UD1 is the power supply negative voltage value of the power supply device, and the voltage value of the electrical signal at the second power supply terminal UD2 is the power supply positive voltage value of the power supply device. When the first power receiving end VD1 is connected to the first power supplying end UD1 and the second power receiving end VD2 is connected to the second power supplying end UD2, the power supplying device is reversely connected to the power receiving circuit. In the specific embodiment, referring to the foregoing first embodiment of reverse connection, only the connection manner and the description of the signal flow direction of the first power supply terminal UD1 and the second power supply terminal UD2 are exchanged, and will not be described herein again.

In summary, the power receiving circuit uses two pairs of diodes (the illustrated diode D1 and the diode D2 form a pair, the diode D3 and the diode D4 form another pair) and two pairs of switching tubes (the illustrated switching tubes MN1 and MP1 form a pair, the switching tubes MN2 and MP2 form another pair), simultaneously provides the voltage of the first power supply terminal and the second power supply terminal for the operational amplifier, and then adjusts the voltage feedback provided by the first power supply terminal and the second power supply terminal by using the operational amplifier to conduct only one switching tube in each pair of switching tubes and cut off the other switching tube, so that the positive input terminal of the load can be connected to the positive electrode of the power supply device and the negative input terminal of the load can be connected to the negative electrode of the power supply device based on the unidirectional conductivity of the diode and the short-circuit effect of the switching tube to the diode. Therefore, the positive electrode and the negative electrode do not need to be distinguished, the voltage at the two ends of the power receiving end is equal to the voltage at the two ends of the power supplying end, the voltage difference caused by the diode between the two ports is eliminated, the normal power supply and work of the load can be immediately realized after the power supplying equipment and the power receiving circuit are connected in an inserted mode, and higher precision (such as excessive consideration of offset voltage and zero drift) is not needed to be achieved through calibration.

In the foregoing embodiments, referring to fig. 1, the op-amp control circuit 102 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9; the first operational amplifier Amp1 and the second operational amplifier Amp2 are both differential operational amplifiers; the first power receiving terminal VD1 is connected to the second power receiving terminal VD2 through the first resistor R1, and a power supply loop is formed among the first power supplying terminal UD1, the first power receiving terminal VD1, the second power supplying terminal UD2, and the second power receiving terminal VD2, regardless of whether the first power supplying terminal UD1 is connected to the first power receiving terminal VD1 and the second power supplying terminal UD2 is connected to the second power receiving terminal VD2, or whether the first power supplying terminal UD1 is connected to the second power receiving terminal VD2 and the second power supplying terminal UD2 is connected to the first power receiving terminal VD 1. One end of the second resistor R2 is connected with the first power receiving end VD1, the other end of the second resistor R2 is connected with the negative input end of the first operational amplifier Amp1, the positive output end of the first operational amplifier Amp1 is connected to the negative input end of the first operational amplifier Amp1 through the fifth resistor R5 to form a negative feedback structure, one end of the sixth resistor R6 is grounded, the other end of the sixth resistor R6 is connected with the positive input end of the first operational amplifier Amp1, the negative output end of the first operational amplifier Amp1 is connected to the positive input end of the first operational amplifier Amp1 through the ninth resistor R9 to form a positive feedback structure, a differential operational amplifier structure with a positive feedback loop and a negative feedback loop is formed, the positive input end of the operational amplifier is connected with a voltage signal provided by the first power receiving end VD1, and the negative input end is not connected with an input signal. One end of the third resistor R3 is connected with the second power receiving end VD2, the other end of the third resistor R3 is connected with the negative input end of the second operational amplifier Amp2, the positive output end of the second operational amplifier Amp2 is connected to the negative input end of the second operational amplifier Amp2 through the fourth resistor R4 to form a negative feedback structure, one end of the seventh resistor R7 is grounded, the other end of the seventh resistor R7 is connected with the positive input end of the second operational amplifier Amp2, the negative output end of the second operational amplifier Amp2 is connected to the positive input end of the second operational amplifier Amp2 through the eighth resistor R8 to form a positive feedback structure, a differential operational amplifier structure with a positive feedback loop is formed, the negative input end of the operational amplifier is connected with a voltage signal provided by the first power receiving end VD1, and the positive input end is not connected with an input signal. Thereby forming a first operational amplifier and a second operational amplifier which are symmetrically arranged in the power receiving circuit.

The fifth resistor R5, the ninth resistor R9, the eighth resistor R8, and the fourth resistor R4 are feedback resistors, and the second resistor R2, the sixth resistor R6, the seventh resistor R7, and the third resistor R3 are input resistors; in each operational amplifier, the ratio of the feedback resistor to the input resistor may be so long as the voltage value at the output end of the operational amplifier is adjusted to turn on the corresponding MOS transistor in the first diode driving circuit 101 or the second diode driving circuit 103 and turn off the other connected MOS transistor in the same diode driving circuit.

In some embodiments, the positive power supply terminal+ of the first operational amplifier Amp1 and the positive power supply terminal+ of the second operational amplifier Amp2 are both connected to the positive input terminal v+ of the load U1; the negative power supply terminal of the first operational amplifier Amp1 and the negative power supply terminal of the second operational amplifier Amp2 are both grounded; in order to switch the offset degree of the signal controlling the negative output end of the first operational amplifier Amp1 and the signal controlling the negative output end of the second operational amplifier Amp2, the common-mode input end of the first operational amplifier Amp1 and the common-mode input end of the second operational amplifier Amp2 are connected with reference voltage signals, wherein the voltage value of the signal outputted by the negative output end of the first operational amplifier Amp1 is smaller than the voltage value of the reference voltage signal inputted by the first operational amplifier Amp1, and the voltage value of the reference voltage signal inputted by the first operational amplifier Amp1 can be half of the voltage value of the first power receiving end VD 1. The resistance value of the fifth resistor R5 is equal to the resistance value of the ninth resistor R9, and the resistance value of the second resistor R2 is equal to the resistance value of the sixth resistor R6. The voltage value of the signal output by the negative output end of the second operational amplifier Amp2 is smaller than the voltage value of the reference voltage signal input by the second operational amplifier Amp1, and the voltage value of the reference voltage signal input by the second operational amplifier Amp2 may be half of the voltage value of the second power receiving end VD 2. The resistance value of the fourth resistor R4 is equal to the resistance value of the eighth resistor R8, the resistance value of the seventh resistor R7 is equal to the resistance value of the third resistor R3, the resistance value of the eighth resistor R8 is equal to the resistance value of the ninth resistor R9, and the resistance value of the sixth resistor R6 is equal to the resistance value of the seventh resistor R7, so that the op-amp control circuit 102 is more symmetrical.

Referring to fig. 1, two switching transistors with opposite polarities included in the first diode driving circuit 101 are a first NMOS transistor MN1 and a first PMOS transistor MP1, respectively, and two switching transistors with opposite polarities included in the second diode driving circuit 103 are a second NMOS transistor MN2 and a second PMOS transistor MP2, respectively; the first diode driving circuit 101 further includes a first diode D1 and a second diode D2, where a forward end of the first diode D1 is connected to a source of the first NMOS transistor MN1, a reverse end of the first diode D1 is connected to a drain of the first NMOS transistor MN1, a reverse end of the first diode D1 is connected to a forward end of the second diode D2, a forward end of the second diode D2 is connected to a drain of the first PMOS transistor MP1, a reverse end of the second diode D2 is connected to a source of the first PMOS transistor MP1, a gate of the first NMOS transistor MN1 is connected to a gate of the first PMOS transistor MP1, both the gate of the first PMOS transistor MP1 and the gate of the first NMOS transistor MN1 are control ends of the switching transistors inside the first diode driving circuit 101, and both the reverse end of the first diode D1 and the forward end of the second diode D2 are connected to the first end VD1; the positive terminal of the first diode D1 is connected with the negative input terminal V-of the load U1, and the negative terminal of the second diode D2 is connected with the positive input terminal V+ of the load U1. The second diode driving circuit 103 further includes a third diode D3 and a fourth diode D4, where a forward end of the third diode D3 is connected to the source of the second NMOS transistor MN2, a reverse end of the third diode D3 is connected to the drain of the second NMOS transistor MN2, a reverse end of the third diode D3 is connected to a forward end of the fourth diode D4, a forward end of the fourth diode D4 is connected to the drain of the second PMOS transistor MP2, a reverse end of the fourth diode D4 is connected to the source of the second PMOS transistor MP2, a gate of the second NMOS transistor MN2 is connected to the gate of the second PMOS transistor MP2, both the gate of the second PMOS transistor MP2 and the gate of the first NMOS transistor MN1 are control ends of the switching transistors inside the second diode driving circuit 103, and both the reverse end of the third diode D3 and the forward end of the fourth diode D4 are connected to the second end VD2; the positive terminal of the third diode D3 is connected to the negative input terminal V-of the load U1, and the negative terminal of the fourth diode D4 is connected to the positive input terminal v+ of the load U1.

Based on the foregoing embodiments, as can be seen in conjunction with fig. 1, the working principles of the present application include:

one embodiment of positive power up: the voltage value of the electrical signal at the first power supply terminal UD1 is the positive voltage value of the power supply device, and the voltage value of the electrical signal at the second power supply terminal UD2 is the negative voltage value of the power supply device. When the first power receiving end VD1 is connected to the first power supply end UD1 and the second power receiving end VD2 is connected to the second power supply end UD2, current flows from the first power receiving end VD1, flows to the positive input end v+ of the load U1 through the diode D2, if the load U1 is a chip, power is supplied to the power supply end VCC of the chip, current flows from v+ to V-, flows to the second power receiving end VD2 through the diode D3, flows back to the second power supply end UD2, and a complete power supply loop for the load U1 is formed, and preferably, the potential at the end of the resistor R1 connected to the resistor R2 is higher than the potential at the end of the resistor R1 connected to the resistor R3. After the load U1 is powered, the first operational amplifier Amp1 processes the electrical signal provided by the first power receiving terminal VD1 into a first electrical signal and feeds the first electrical signal back to the gate of the first PMOS transistor MP1 through the negative output terminal, at this time, since the absolute value of the difference between the voltage value of the first electrical signal output by the negative output terminal of the first operational amplifier Amp1 and the voltage value of the source electrode of the corresponding switch tube MP1 in the first diode driving circuit is greater than the first preset conducting voltage threshold, the first PMOS transistor MP1 is turned on, then the diode D2 is short-circuited, the discharge current of the first power supplying terminal UD1 (regarded as the first power receiving terminal VD 1) of the power supplying device does not flow through the diode D2 provided in the first diode driving circuit, and then the voltage transmitted by the first power supplying terminal VD1 is applied to the positive input terminal v+ of the load through the first PMOS transistor MP1, and since the voltage difference between the source electrode and drain electrode of the first PMOS transistor MP1 is 0, the voltage value of the first power supplying terminal UD1 of the power supplying device is equal to the voltage value of the positive input terminal v+ of the load U1; meanwhile, the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the first NMOS transistor MN1 in the first diode driving circuit 101 is smaller than a second preset on-voltage threshold, and the first NMOS transistor MN1 is turned off, so that the electric signal output by the first power receiving end VD1 is not applied to the negative input end V-of the load U1 through the first NMOS transistor MN 1; further, because of the unidirectional conductivity of the diode D1, the discharge current of the first power receiving end VD1 does not flow through the diode D1 provided in the first diode driving circuit, and the electric signal transmitted by the first power supply end UD1 of the power supply device is not transmitted to the negative input end V-of the load through the diode D1, so that the first power receiving end VD1 is not electrically connected to the negative input end V-of the load, and the electrode is prevented from being connected to the negative input end V-of the load to burn the load. On this basis, the second operational amplifier Amp2 processes the applied electric signal at its negative input terminal into a second electric signal having a voltage value lower than the first electric signal and feeds back the second electric signal from the negative output terminal to the gate of the second NMOS transistor of the second diode driving circuit 103, wherein the voltage value of the negative input terminal of the second operational amplifier Amp2 is smaller than the voltage value at the first power supply terminal UD1 (regarded as the first power receiving terminal VD 1); because the absolute value of the difference between the voltage value of the second electric signal output by the negative output end of the second operational amplifier Amp2 and the source voltage value of the second NMOS MN2 is greater than the second preset conducting voltage threshold, then the second NMOS MN2 is conducted and the diode D3 is short-circuited, the current does not flow through the diode D3 and the diode D4 arranged in the second diode driving circuit, but the second power receiving end VD2 is communicated with the negative input end V-of the load U1 through the second NMOS MN2, so that the voltage value of the second power supply end UD2 of the power supply equipment is equal to the voltage value of the negative input end V-of the load U1; meanwhile, the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of the second PMOS transistor MP2 is smaller than a first preset on voltage threshold, the second PMOS transistor MP2 is turned off, and the electric signal at the second power supply terminal UD2 of the power supply device is not applied to the positive input terminal v+ of the load U1 through the second PMOS transistor MP 2; when the voltage value at the positive input terminal v+ of the load U1 connected to the positive terminal of the diode D4 (considered as equal to the voltage value at the first power supply terminal UD 1) is higher than the voltage value at the second power supply terminal UD2 (corresponding to the voltage value at the second power receiving terminal VD 2), the unidirectional conduction of the diode D4 results in that the current cannot flow through the diode D4, so that the discharge current at the second power receiving terminal VD2 (or the second power supply terminal UD2 of the power supply device) also does not flow through the diode D4 built in the second diode driving circuit to the positive input terminal v+ of the load U1. So far, the normal voltage-stabilizing power-on action of the load U1 is realized.

One embodiment of reverse power up: the voltage value of the electric signal at the first power supply terminal UD1 is the positive voltage value of the power supply device, the voltage value of the electric signal at the second power supply terminal UD2 is the negative voltage value of the power supply device, the first power receiving terminal VD1 is connected with the second power supply terminal UD2, the second power receiving terminal VD2 is connected with the first power supply terminal UD1, the first power supply terminal UD1 discharges to the second power receiving terminal VD2, the discharging current flows from the second power receiving terminal VD2, flows to the positive input terminal v+ of the load U1 through the diode D4, if the load U1 is a chip, the current flows from v+ to V-, and flows to the first power receiving terminal VD1 through the diode D1, and flows back to the second power supply terminal UD2, so that a complete power supply circuit for the load U1 is formed, preferably, the potential at one end of the resistor R1 connected with the resistor R3 is higher than the potential at one end of the resistor R1 connected with the resistor R2. After the load U1 supplies power, the second operational amplifier Amp2 processes the electrical signal provided by the second power receiving end VD2 into a first electrical signal, and the first electrical signal is fed back to the gate of the fourth PMOS transistor included in the second diode driving circuit 103 through the negative output end. Because the absolute value of the difference between the voltage value of the first electric signal output by the negative output end of the second operational amplifier Amp2 and the source voltage value of the second PMOS transistor MP2 is greater than the first preset conducting voltage threshold, the second PMOS transistor MP2 is turned on, the diode D4 is shorted when the second PMOS transistor MP2 is turned on, the discharging current of the second power receiving end VD2 does not flow through the diode D4, and the voltage transmitted by the first power supply end UD1 (regarded as the second power receiving end VD 2) of the power supply device is applied to the positive input end v+ of the load through the second PMOS transistor MP2, so that the voltage value of the first power supply end UD1 (regarded as the voltage value of the second power receiving end VD 2) of the power supply device is equal to the voltage value of the positive input end v+ of the load U1. Meanwhile, the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the second NMOS tube MN2 is smaller than a second preset on voltage threshold value, and the second NMOS tube MN2 is turned off, so that the electric signal output by the first power supply end UD1 (regarded as the second power receiving end VD 2) of the power supply equipment is not applied to the negative input end V-of the load U1 through the second NMOS tube MN2, and the electrode is prevented from being burnt out; further, because of the unidirectional conductivity of the diode D3, the discharge current of the second power receiving terminal VD2 does not flow through the diode D3 either, and the electric signal transmitted from the first power supply terminal UD1 of the power supply device is not transmitted to the negative input terminal V-of the load through the diode D3, and the second power receiving terminal VD2 is not electrically connected to the negative input terminal V-of the load. On the basis, the first operational amplifier Amp1 processes the electric signal applied to the negative input end of the first operational amplifier Amp1 into a second electric signal with a voltage value lower than that of the first electric signal and fed back to the gate of the first NMOS transistor MN1 through the negative output end, wherein the voltage value of the negative input end of the first operational amplifier Amp1 is smaller than that of the second power receiving end VD 2; because the absolute value of the difference between the voltage value of the second electric signal output by the negative output end of the first operational amplifier Amp1 and the source voltage value of the first NMOS MN1 is greater than the second preset on voltage threshold, the first NMOS MN1 is turned on to short-circuit the diode D1, and the current passes through the first NMOS MN1 to connect the first power receiving end VD1 with the negative input end V of the load U1, so that the voltage value of the first power supply end UD1 of the power supply device is equal to the voltage value of the negative input end V of the load U1; because the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of the first PMOS transistor MP1 is smaller than the first preset conducting voltage threshold, the first PMOS transistor MP1 is turned off, and the electric signal at the first power receiving end VD1 is not applied to the positive input end v+ of the load U1 through the switching transistor MP1, so that the electrode is prevented from being connected instead to burn the load. When the voltage value at the positive input terminal v+ of the load U1 connected to the positive terminal of the diode D2 is higher than the voltage value at the first power supply terminal UD1 (corresponding to the voltage value at the first power receiving terminal VD 1), the unidirectional conductivity of the diode D2 results in that the current cannot flow through the diode D2, so that the discharge current of the first power receiving terminal VD1 (or the first power supply terminal UD1 of the power supply device) does not flow through the diode D2 built in the first diode driving circuit and is led to the positive input terminal v+ of the load U1, thereby avoiding the electrode from burning the load instead.

In summary, compared with the prior art, when the power supply equipment is electrically connected with the power receiving circuit through the interface, the front and back connection condition of the corresponding power supply port is not required to be recognized in advance through a built-in program, and if the matched tobacco stem and the tobacco cartridge are matched and the power supply circuit and the power supply port in the tobacco cartridge are fixed, the plug and play power supply can be realized no matter whether the tobacco stem and the tobacco cartridge are connected in front or in back, the atomization working speed of the smoke agent source is increased, the electronic cigarette is pumped quickly and conveniently, and the experience of a user is improved; the circuit overcomes the inconvenience that a chip is required to carry out blind insertion detection in the prior art, the operational amplifier built in the power receiving circuit has low price and large product quantity, and the performance index of the circuit can be suitable for outputting the common high and low level for driving the switching tube to be turned on and off.

Based on the foregoing embodiments, an electronic atomization terminal is also disclosed, where the electronic atomization terminal includes a power supply device, a load, and a power receiving working circuit disclosed in each of the foregoing embodiments, where the power supply device is plugged into the power receiving working circuit through an interface, or the power receiving working circuit is plugged into the power supply device through an interface. In some embodiments, the electronic atomization terminal comprises a tobacco stem and a tobacco cartridge, the tobacco stem is provided with a parent interface, the tobacco cartridge is provided with a pluggable parent interface, and then the electronic atomization terminal can be assembled in a plugging manner in a mode of combining the tobacco stem and the tobacco cartridge; the power supply equipment is arranged in the cigarette rod, and the power receiving circuit and the load are arranged in the cigarette bullet, so that when the cigarette rod is inserted into the cigarette bullet, the power supply equipment is connected into the power receiving circuit; the load is used for receiving the power provided by the power supply equipment under the condition that the power supply equipment is connected to the power receiving circuit in the forward direction or connected to the power receiving circuit in the reverse direction, so that the aerosol source is continuously atomized. Therefore, when the tobacco rod is electrically connected with the tobacco cartridge, the front and back connection condition of the corresponding power supply port is not required to be recognized in advance through a built-in program, and if the matched tobacco rod is connected with the tobacco cartridge in a positive way and the power supply circuit and the power supply port in the tobacco cartridge are fixed, the plug and play power supply can be realized no matter whether the tobacco rod is connected with the tobacco cartridge in a positive way or in a reverse way, the atomization working speed of the smoke agent source is increased, the electronic cigarette is pumped quickly and conveniently, and the experience of a user is improved; the circuit overcomes the inconvenience that a chip is required to carry out blind insertion detection in the prior art, the operational amplifier built in the power receiving circuit has low price and large product quantity, and the performance index of the circuit can be suitable for outputting the common high and low level for driving the switching tube to be turned on and off.

Preferably, the power supply device is provided with a first communication end, the load is further provided with a second communication end coupled with the first communication end, and the load is further used for performing data interaction with the power supply device through the second communication end after power-on operation, so that the power supply device adjusts the electric signal provided by the first power supply end and the electric signal provided by the second power supply end. The power supply device can be a portable terminal device such as a power adapter and a smart phone. The load may be a heating cell or a cartridge chip. For example, the power supply device and the load communicate through a 12C bus, or communicate by sending fixed pulses through a single-wire protocol, so as to meet the power supply voltage requirement of the load U1. The plugging and unplugging monitoring of the charging interface is not needed through an additional MCU, and the circuit structure is simplified.

It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. Further, for ease of description, only some, but not all, of the structures associated with this application are shown in the drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms "first," "second," and the like in this application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Claims (12)

1. The power receiving end of the power receiving working circuit is used for supplying power to the power supply end of the power supply equipment, and the power receiving working circuit is electrically connected with a load; the power receiving circuit is characterized by comprising a first diode driving circuit, a second diode driving circuit and an operational amplifier control circuit;

The first diode driving circuit and the second diode driving circuit are connected with the operational amplifier control circuit;

and the operational amplifier control circuit is used for controlling the first diode driving circuit, the second diode driving circuit and the load to be connected into an electric path when the power supply equipment is connected to the power receiving circuit in the forward direction and the power supply equipment is connected to the power receiving circuit in the reverse direction, so that the power supply equipment supplies power to the load through the power receiving circuit.

2. The powered circuit of claim 1, wherein the powered terminal of the powered circuit comprises a first powered terminal and a second powered terminal, and the power sourcing terminal of the powering device comprises a first power sourcing terminal and a second power sourcing terminal;

the operational amplifier control circuit is used for sequentially determining the flow directions of current in a diode arranged in the first diode driving circuit and a diode arranged in the second diode driving circuit by processing an electric signal provided by a first power supply end of the power supply equipment when the power supply equipment is connected to the power receiving circuit in the forward direction so as to realize that the electric signal provided by the first power supply end of the power supply equipment is applied to a positive input end of a load, and an electric path is formed between a negative input end of the load and the second power supply end of the power supply equipment;

The operational amplifier control circuit is further used for sequentially determining the flow directions of current in a diode arranged in the second diode driving circuit and a diode arranged in the first diode driving circuit by processing the electric signal provided by the second power supply end of the power supply equipment when the power supply equipment is reversely connected to the power receiving circuit, so that the electric signal provided by the second power supply end of the power supply equipment is applied to the positive input end of the load, and an electric path is formed between the negative input end of the load and the first power supply end of the power supply equipment.

3. The power receiving circuit according to claim 2, wherein the first diode driving circuit includes a pair of diodes connected end to end, and a switching tube connected to the opposite ends of each diode;

the operational amplifier control circuit comprises a first operational amplifier and a second operational amplifier;

the common end of the diodes connected end to end, which are included in the first diode driving circuit, is a first power receiving end, the control end of the switching tube, which is included in the first diode driving circuit, is connected with the negative output end of the first operational amplifier, and the negative input end of the first operational amplifier is connected with the first power receiving end through a resistor;

the common end of the diodes connected end to end, which are included in the second diode driving circuit, is a second power receiving end, the control end of the switching tube, which is included in the second diode driving circuit, is connected with the negative output end of the second operational amplifier, and the negative input end of the second operational amplifier is connected with the second power receiving end through a resistor;

The negative input end of the first operational amplifier and the negative input end of the second operational amplifier are connected through a resistor so as to form a passage between the negative input end of the first operational amplifier and the negative input end of the second operational amplifier and generate a voltage difference value.

4. The power receiving circuit according to claim 3, wherein the first operational amplifier is configured to process an electrical signal provided by the first power supply terminal into a first electrical signal and feed the first electrical signal back to the first diode driving circuit from the negative output terminal when the first power receiving terminal is connected to the first power supply terminal and the second power receiving terminal is connected to the second power supply terminal, so that a discharge current of the first power supply terminal of the power supply device does not flow through a diode provided in the first diode driving circuit, and then apply a voltage transmitted by the first power supply terminal of the power supply device to the positive input terminal of the load through the switching tube;

the second operational amplifier is used for processing the electric signal applied to the negative input end of the second operational amplifier into a second electric signal with a voltage value lower than that of the first electric signal when the first power receiving end is connected with the first power supply end and the second power receiving end is connected with the second power supply end, and feeding back the second electric signal to the second diode driving circuit through the negative output end so as to prevent current from flowing through a diode arranged in the second diode driving circuit, and then applying the electric signal transmitted by the second power supply end of the power supply equipment to the negative input end of the load through the switch tube;

The first power supply end is a power supply anode of the power supply equipment, the second power supply end is a power supply cathode of the power supply equipment, and when the first power receiving end is connected with the first power supply end and the second power receiving end is connected with the second power supply end, the power supply equipment is positively connected to the power receiving circuit.

5. The powered circuit of claim 4, wherein the first diode driver circuit comprises two switching tubes of opposite polarity and the second diode driver circuit comprises two switching tubes of opposite polarity;

the absolute value of the difference between the voltage value of the first electric signal output by the negative output end of the first operational amplifier and the voltage value of the source electrode of a corresponding switch tube in the first diode driving circuit is larger than a first preset conducting voltage threshold value, so that the voltage value of a first power supply end of power supply equipment is equal to the voltage value of a positive input end of a load; the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the other switching tube in the first diode driving circuit is smaller than a second preset conducting voltage threshold value, so that the electric signal output by the first power supply end of the power supply equipment is not applied to the negative input end of the load;

The absolute value of the difference between the voltage value of the second electric signal output by the negative output end of the second operational amplifier and the source voltage value of one of the switching tubes in the second diode driving circuit is larger than a second preset conducting voltage threshold value, so that the voltage value of the second power supply end of the power supply equipment is equal to the voltage value of the negative input end of the load; the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of another switching tube in the second diode driving circuit is smaller than the first preset conducting voltage threshold value, so that the electric signal existing at the second power supply end of the power supply equipment is not applied to the positive input end of the load.

6. The power receiving circuit according to claim 3, wherein the second operational amplifier is configured to process an electrical signal provided by the first power supply terminal into a first electrical signal and feed the first electrical signal back to the second diode driving circuit through the negative output terminal when the first power receiving terminal is connected to the second power supply terminal and the second power receiving terminal is connected to the first power supply terminal, so that a discharge current of the first power supply terminal of the power supply device does not flow through a diode provided in the second diode driving circuit, and an electrical signal transmitted by the first power supply terminal of the power supply device is applied to a positive input terminal of the load;

The first operational amplifier is used for processing the electric signal applied by the negative input end of the first operational amplifier into a second electric signal with a voltage value lower than that of the first electric signal when the first power receiving end is connected with the second power supply end and the second power receiving end is connected with the first power supply end, and feeding back the second electric signal to the first diode driving circuit through the negative output end so as to prevent current from flowing through a diode arranged in the first diode driving circuit, and the electric signal transmitted by the second power supply end of the power supply equipment is applied to the negative input end of the load, wherein the voltage value of the electric signal at the second power supply end of the power supply equipment is lower than that of the second electric signal; the voltage value of the electrical signal at the first power supply terminal is greater than the voltage value of the electrical signal at the second power supply terminal;

the first power supply end is a power supply anode of the power supply equipment, the second power supply end is a power supply cathode of the power supply equipment, and the power supply equipment is reversely connected to the power receiving circuit when the first power receiving end is connected with the second power supply end and the second power receiving end is connected with the first power supply end.

7. The powered circuit of claim 6, wherein the first diode driver circuit comprises two switching tubes of opposite polarity and the second diode driver circuit comprises two switching tubes of opposite polarity;

The absolute value of the difference between the voltage value of the first electric signal output by the second operational amplifier and the voltage value of the source electrode of a corresponding switching tube in the second diode driving circuit is larger than a first preset conducting voltage threshold value, so that the voltage value of a first power supply end of power supply equipment is equal to the voltage value of a positive input end of a load; the absolute value of the difference between the voltage value of the first electric signal and the source voltage value of the other switching tube in the second diode driving circuit is smaller than a second preset conducting voltage threshold value, so that the electric signal output by the first power supply end of the power supply equipment is not applied to the negative input end of the load;

the absolute value of the difference between the voltage value of the first electric signal output by the first operational amplifier and the source voltage value of one of the switching tubes in the first diode driving circuit is larger than a second preset conducting voltage threshold value, so that the voltage value of the second power supply end of the power supply equipment is equal to the voltage value of the negative input end of the load; the absolute value of the difference between the voltage value of the second electric signal and the source voltage value of the other switching tube in the first diode driving circuit is smaller than a first preset conducting voltage threshold value, so that the electric signal existing at the second power supply end of the power supply equipment is not applied to the positive input end of the load.

8. The power receiving and operating circuit according to claim 4 or 6, wherein the operational amplifier control circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor; the first operational amplifier and the second operational amplifier are both differential operational amplifiers;

the first power receiving end is connected with the second power receiving end through a first resistor so as to form a power supply loop among the first power supply end, the first power receiving end, the second power supply end and the second power receiving end;

one end of the second resistor is connected with the first power receiving end, the other end of the second resistor is connected with the negative input end of the first operational amplifier, the positive output end of the first operational amplifier is connected to the negative input end of the first operational amplifier through the fifth resistor, one end of the sixth resistor is grounded, the other end of the sixth resistor is connected with the positive input end of the first operational amplifier, and the negative output end of the first operational amplifier is connected to the positive input end of the first operational amplifier through the ninth resistor;

one end of the third resistor is connected with the second power receiving end, the other end of the third resistor is connected with the negative input end of the second operational amplifier, the positive output end of the second operational amplifier is connected to the negative input end of the second operational amplifier through the fourth resistor, one end of the seventh resistor is grounded, the other end of the seventh resistor is connected with the positive input end of the second operational amplifier, and the negative output end of the second operational amplifier is connected to the positive input end of the second operational amplifier through the eighth resistor.

9. The power receiving circuit of claim 8, wherein the positive power supply terminal of the first operational amplifier and the positive power supply terminal of the second operational amplifier are both connected to the positive input terminal of the load; the negative power supply end of the first operational amplifier and the negative power supply end of the second operational amplifier are grounded; the common-mode input end of the first operational amplifier and the common-mode input end of the second operational amplifier are connected with reference voltage signals;

the voltage value of the signal output by the negative output end of the first operational amplifier is smaller than the voltage value of the reference voltage signal input by the first operational amplifier, the resistance value of the fifth resistor is equal to the resistance value of the ninth resistor, and the resistance value of the second resistor is equal to the resistance value of the sixth resistor;

the voltage value of the signal output by the negative output end of the second operational amplifier is smaller than the voltage value of the reference voltage signal input by the second operational amplifier, the resistance value of the fourth resistor is equal to the resistance value of the eighth resistor, the resistance value of the seventh resistor is equal to the resistance value of the third resistor, the resistance value of the eighth resistor is equal to the resistance value of the ninth resistor, and the resistance value of the sixth resistor is equal to the resistance value of the seventh resistor.

10. The power receiving circuit of claim 8, wherein the two switching transistors with opposite polarities included in the first diode driving circuit are a first NMOS transistor and a first PMOS transistor, respectively, and the two switching transistors with opposite polarities included in the second diode driving circuit are a second NMOS transistor and a second PMOS transistor, respectively;

the first diode driving circuit further comprises a first diode and a second diode, wherein the forward end of the first diode is connected with the source electrode of the first NMOS tube, the reverse end of the first diode is connected with the drain electrode of the first NMOS tube, the reverse end of the first diode is connected with the forward end of the second diode, the forward end of the second diode is connected with the drain electrode of the first PMOS tube, the reverse end of the second diode is connected with the source electrode of the first PMOS tube, the grid electrode of the first NMOS tube is connected with the grid electrode of the first PMOS tube, the grid electrode of the first PMOS tube and the grid electrode of the first NMOS tube are both control ends of a switch tube in the first diode driving circuit, and the reverse end of the first diode and the forward end of the second diode are both connected to the first power receiving end; the positive end of the first diode is connected with the negative input end of the load, and the negative end of the second diode is connected with the positive input end of the load;

The second diode driving circuit further comprises a third diode and a fourth diode, wherein the forward end of the third diode is connected with the source electrode of the second NMOS tube, the reverse end of the third diode is connected with the drain electrode of the second NMOS tube, the reverse end of the third diode is connected with the forward end of the fourth diode, the forward end of the fourth diode is connected with the drain electrode of the second PMOS tube, the reverse end of the fourth diode is connected with the source electrode of the second PMOS tube, the grid electrode of the second NMOS tube is connected with the grid electrode of the second PMOS tube, the grid electrode of the second PMOS tube and the grid electrode of the first NMOS tube are both control ends of a switch tube in the second diode driving circuit, and the reverse end of the third diode and the forward end of the fourth diode are both connected to the second power receiving end; the positive terminal of the third diode is connected with the negative input terminal of the load, and the negative terminal of the fourth diode is connected with the positive input terminal of the load.

11. An electronic atomizing terminal comprising a power supply device, a load, and the power receiving circuit of any one of claims 1 to 10, wherein the power supply device is plugged into the power receiving circuit through an interface, or the power receiving circuit is plugged into the power supply device through an interface.

12. The electronic atomization terminal of claim 11, wherein the electronic atomization terminal comprises a stem and a cartridge, the stem is provided with a parent interface, and the cartridge is provided with a pluggable parent interface;

the power supply equipment is arranged in the cigarette rod, and the power receiving circuit and the load are arranged in the cigarette bullet, so that when the cigarette rod is inserted into the cigarette bullet, the power supply equipment is connected into the power receiving circuit;

the load is used for receiving the power provided by the power supply equipment under the condition that the power supply equipment is connected to the power receiving circuit in the forward direction or connected to the power receiving circuit in the reverse direction, so that the aerosol source is continuously atomized.

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