CN219643629U

CN219643629U - Charging circuit and electric equipment

Info

Publication number: CN219643629U
Application number: CN202320569128.4U
Authority: CN
Inventors: 陈衍明
Original assignee: Zhejiang Xindong Energy Technology Co ltd
Current assignee: Zhejiang Xindong Energy Technology Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-09-05
Anticipated expiration: 2033-03-16

Abstract

The utility model provides a charging circuit and electric equipment. The charging circuit is applied to electric equipment, the electric equipment comprises a control unit, the charging circuit comprises an input interface, a wake-up circuit and a working circuit, the number of the input interface and the number of the working circuit are all multiple, and one working circuit is connected with one input interface; the wake-up circuit comprises a control switch, a plurality of input interfaces are electrically connected with the control switch, the control switch is connected with an output pin, and the output pin is used for being connected with the control unit; under the condition that at least one input interface in the plurality of input interfaces is connected with a power supply, the control switch is conducted, the output pin outputs a wake-up signal, and the wake-up signal is used for indicating the control unit to control the working circuit corresponding to the one input interface connected with the power supply to be conducted.

Description

Charging circuit and electric equipment

Technical Field

The utility model relates to the technical field of circuits, in particular to a charging circuit and electric equipment.

Background

The electric equipment is provided with a charging circuit, and the charging circuit works normally when the electric equipment is charged so as to charge the electric equipment. In order to avoid the problem that the charging circuit is in a working state when not charging electric equipment so as to increase energy consumption, the charging circuit generally comprises a wake-up circuit and a working circuit, and after a power supply facility is connected with an input interface, the wake-up circuit can wake up the working circuit, so that the working circuit works normally and charges the electric equipment.

In the related art, the wake-up circuit generally includes a control switch and a control unit, one pin of the control switch is connected with one I/O interface of the control unit, the control unit reads the level state of the pin of the control switch, and wakes up the working circuit according to the read level state, so that the working circuit works normally. For the electric equipment with a plurality of input interfaces, each input interface is connected with a wake-up circuit, the plurality of wake-up circuits are respectively connected with a plurality of I/O interfaces of the control unit, as shown in FIG. 1, the first input interface 11 is connected with a first wake-up circuit 51, and the second input interface 12 is connected with a second wake-up circuit 52. In the case where the first input interface 11 is connected to a power supply facility, the control switch 21 in the first wake-up circuit 51 is turned on, and a level signal is provided at a pin of the control switch 21, and at this time, one I/O interface of the control unit may wake-up the working circuit according to the level signal; when the second input interface 12 is connected to a power supply facility, the control switch 21 in the second wake-up circuit 52 is turned on, and a level signal is provided at a pin of the control switch 21, and at this time, the other I/O interface of the control unit may wake-up the charging circuit according to the level signal. That is, in the related art, a plurality of wake-up circuits are required to be set for the electric equipment with a plurality of input interfaces, and each wake-up circuit needs to be connected with an I/O interface of a control unit, that is, a plurality of control switches and a plurality of I/O interfaces of the control unit need to be selected, so that the cost of the wake-up circuit is increased, and wiring is complicated.

Disclosure of Invention

The embodiment of the utility model provides a charging circuit and electric equipment, which are used for solving the problems that a plurality of wake-up circuits are required to be arranged for the electric equipment with a plurality of input interfaces, a plurality of control switches and a plurality of I/O interfaces of a control unit are required to be selected, the cost of the wake-up circuits is increased, and wiring is complicated in the related art.

In order to solve the technical problems, the utility model is realized as follows:

in a first aspect, an embodiment of the present utility model provides a charging circuit, which is applied to an electric device, where the electric device includes a control unit, the charging circuit includes an input interface, a wake-up circuit, and a working circuit, the number of the input interface and the number of the working circuit are all multiple, and one working circuit is connected with one input interface;

the wake-up circuit comprises a control switch, a plurality of input interfaces are electrically connected with the control switch, the control switch is connected with an output pin, and the output pin is used for being connected with the control unit;

and under the condition that at least one of the input interfaces is connected with a power supply, the control switch is conducted, the output pin outputs a wake-up signal, and the wake-up signal is used for indicating the control unit to control the working circuit corresponding to one input interface connected with the power supply to be conducted.

Optionally, the wake-up circuit further includes a first resistor and a second resistor, the plurality of input interfaces are all connected with the first resistor, the first resistor is connected with the second resistor in series, the second resistor is grounded, the first end of the control switch is connected with the first resistor and the second resistor respectively, the second end of the control switch is grounded, and the third end of the control switch is connected with the output pin.

Optionally, the working circuit includes first working circuit and second working circuit, the input interface includes first input interface and second input interface, first working circuit with first input interface connects, second working circuit with second input interface connects, first working circuit with second working circuit all is connected in output interface, output interface be used for with energy storage module in the consumer is connected, charging circuit passes through output interface is right energy storage module charges.

Optionally, the first working circuit includes a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first sub-control switch, a second sub-control switch, and a third sub-control switch;

The first sub-control switch and the second sub-control switch are connected in series, a first end of the first sub-control switch is connected to the first input interface, a first end of the second sub-control switch is connected to the output interface, a second end of the first sub-control switch is connected to a second end of the second sub-control switch, a third end of the first sub-control switch is connected to a third end of the second sub-control switch, one end of the third resistor is connected to the second end of the first sub-control switch, the other end of the third resistor is connected to the third end of the first sub-control switch, one end of the fourth resistor is connected to the other end of the third resistor, the other end of the fourth resistor is connected to the first end of the third sub-control switch, the second end of the third sub-control switch is grounded, one end of the fifth resistor is connected to the third end of the third sub-control switch, the other end of the fifth resistor is grounded, and the first control pin is connected to the first control pin;

the first end of the sixth resistor is connected with the first input interface, the second end of the sixth resistor is connected with the first end of the seventh resistor, the second end of the seventh resistor is grounded, a first detection pin is connected between the sixth resistor and the seventh resistor, a voltage signal is arranged at the first detection pin under the condition that the first input interface is connected with a power supply, and the control unit is used for placing the first control pin at a high level according to the voltage signal so that the first working circuit works.

Optionally, the second working circuit includes an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fourth sub-control switch, a fifth sub-control switch, and a sixth sub-control switch;

the fourth sub control switch and the fifth sub control switch are connected in series, a first end of the fourth sub control switch is connected to the second input interface, a first end of the fifth sub control switch is connected to the output interface, a second end of the fourth sub control switch is connected to the second end of the fifth sub control switch, a third end of the fourth sub control switch is connected to the third end of the fifth sub control switch, one end of the eighth resistor is connected to the second end of the fourth sub control switch, the other end of the eighth resistor is connected to the third end of the fourth sub control switch, one end of the ninth resistor is connected to the other end of the eighth resistor, the other end of the ninth resistor is connected to the first end of the sixth sub control switch, the second end of the sixth sub control switch is grounded, one end of the tenth resistor is connected to the third end of the sixth sub control switch, the other end of the tenth resistor is grounded, and the tenth control pin is connected to the fifth control pin;

The first end of the eleventh resistor is connected with the second input interface, the second end of the eleventh resistor is connected with the first end of the twelfth resistor, the second end of the twelfth resistor is grounded, a second detection pin is connected between the eleventh resistor and the twelfth resistor, a voltage signal is arranged at the second detection pin under the condition that the second input interface is connected with a power supply, and the control unit is used for placing the second control pin at a high level according to the voltage signal so that the second working circuit works.

Optionally, the charging circuit further includes a plurality of diodes, the diodes are connected between the input interface and the wake-up circuit, the plurality of diodes are in one-to-one correspondence with the plurality of input interfaces, the anode of the diodes is connected with the input interface, and the cathode of the diodes is connected with the wake-up circuit.

Optionally, the control switch includes any one of a metal oxide semiconductor field effect transistor, a triode, and an insulated gate bipolar transistor.

In a second aspect, an embodiment of the present utility model further provides an electric apparatus, where the electric apparatus includes a control unit and the charging circuit of any one of the first aspect;

The control unit is provided with a wake-up pin, the wake-up pin is connected with the output pin, the control switch is conducted under the condition that at least one of a plurality of input interfaces is connected with a power supply, the wake-up pin receives the wake-up signal, and the wake-up signal is used for indicating the control unit to control the working circuit corresponding to one input interface connected with the power supply to be conducted.

Optionally, the working circuit includes first working circuit and second working circuit, the input interface includes first input interface and second input interface, first working circuit with first input interface connection, second working circuit with second input interface connection, the control unit still has first pin, second pin, third pin and fourth pin, first working circuit is connected with first control pin and first detection pin, second working circuit is connected with second control pin and second detection pin, first detection pin with first pin is connected, first control pin with second pin is connected, second detection pin with third pin is connected, second control pin with fourth pin is connected.

Optionally, the electric equipment further includes an energy storage module, the energy storage module is electrically connected with an output interface, the output interface is connected with the first working circuit and the second working circuit, and the charging circuit charges the energy storage module through the output interface.

In the embodiment of the utility model, the charging circuit comprises an input interface, a wake-up circuit and a working circuit, wherein the number of the input interface and the working circuit is multiple, one working circuit is connected with one input interface, namely one input interface corresponds to one working circuit, and the working circuit where the input interface is positioned can work to charge electric equipment under the condition that one input interface is connected with a power supply. The wake-up circuit comprises a control switch, and a plurality of input interfaces are electrically connected with the control switch, so that the plurality of input interfaces are connected with the wake-up circuit. The control switch is provided with an output pin, the charging circuit is applied to electric equipment, the electric equipment comprises a control unit, the output pin can be connected with the control unit, and therefore the wake-up circuit can send a wake-up signal to the control unit through the output pin. Therefore, under the condition that at least one input interface of the plurality of input interfaces is connected with the power supply, the control switch in the wake-up circuit is in a conducting state, at the moment, the output pin of the control switch can output a wake-up signal, and the wake-up signal is used for indicating the control unit to control the working circuit corresponding to the one input interface connected with the power supply to be conducted, so that the control unit can control the working circuit corresponding to the one input interface connected with the power supply to be conducted according to the wake-up signal, and the one input interface connected with the power supply can charge the electric equipment through the corresponding working circuit.

That is, in the embodiment of the utility model, the plurality of input interfaces share one wake-up circuit, and the output pin of the control switch in the wake-up circuit can output the wake-up signal, so that the control unit can control the working circuit corresponding to the input interface connected with the power supply to work according to the wake-up signal, and the plurality of input interfaces and the plurality of working circuits can work normally, thereby realizing the charging of electric equipment. The embodiment of the utility model can avoid the problem that a plurality of wake-up circuits are required to be arranged for the charging circuit with a plurality of input interfaces, and can also avoid the problem that a plurality of control switches are required because one wake-up circuit is arranged in the charging circuit provided by the embodiment of the utility model, and the output pins of the control switches are only required to be connected with one interface of the control unit, so that the problem that a plurality of interfaces of the control unit are required to be occupied can also be avoided, the cost of the charging circuit can be prevented from being higher, and in addition, the embodiment of the utility model reduces the number of the wake-up circuits and leads the wiring of the charging circuit to be simpler.

Drawings

Fig. 1 shows a circuit configuration diagram of a charging circuit in the related art;

fig. 2 shows a circuit configuration diagram of a charging circuit according to an embodiment of the present utility model;

Fig. 3 is a schematic block diagram of a charging circuit according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a first input interface according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a second input interface according to an embodiment of the present utility model;

fig. 6 is a schematic block diagram of an electric device according to an embodiment of the present utility model.

Reference numerals:

100: a charging circuit; 10: an input interface; 20: a wake-up circuit; 31: a first operating circuit; 32: a second operating circuit; 11: a first input interface; 12: a second input interface; 21: a control switch; 22: a first resistor; 23: a second resistor; 24: an output pin; 40: an output interface; 311: a third resistor; 312: a fourth resistor; 313: a fifth resistor; 314: a sixth resistor; 315: a seventh resistor; 316: a first sub-control switch; 317: a second sub-control switch; 318: a third sub-control switch; 3111: a first detection pin; 3112: a first control pin; 321: an eighth resistor; 322: a ninth resistor; 323: a tenth resistor; 324: an eleventh resistor; 325: a twelfth resistor; 326: a fourth sub-control switch; 327: a fifth sub-control switch; 328: a sixth sub-control switch; 3211: a second detection pin; 3212: a second control pin; 25: a diode; 51: a first wake-up circuit; 52: a second wake-up circuit; 200: an electric device; 210: a control unit; 220: an energy storage module; 211: a first pin; 212: a second pin; 213: a third pin; 214: and a fourth pin.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As shown in fig. 2 to 6, the charging circuit 100 is applied to a powered device 200, the powered device 200 includes a control unit 210, the charging circuit 100 includes an input interface 10, a wake-up circuit 20 and a working circuit, the number of the input interface 10 and the working circuit is plural, the plural input interfaces 10 are all connected with the wake-up circuit 20, and one working circuit is connected with one input interface 10; the wake-up circuit 20 comprises a control switch 21, wherein a plurality of input interfaces 10 are electrically connected with the control switch 21, the control switch 21 is connected with an output pin 24, and the output pin 24 is used for being connected with a control unit 210; in the case that at least one input interface 10 among the plurality of input interfaces 10 is connected to a power source, the control switch 21 is turned on, and the output pin 24 outputs a wake-up signal for instructing the control unit 210 to control the operation circuit corresponding to the input interface 10 connected to the power source to be turned on.

In the embodiment of the present utility model, the charging circuit 100 includes an input interface 10, a wake-up circuit 20 and a working circuit, wherein the number of the input interface 10 and the number of the working circuits are all multiple, one working circuit is connected with one input interface 10, i.e. one input interface 10 corresponds to one working circuit, and when one input interface 10 is connected with a power supply, the working circuit where the input interface 10 is located can work to charge the electric equipment 200. The wake-up circuit 20 comprises a control switch 21, and the plurality of input interfaces 10 are electrically connected to the control switch 21, so that the plurality of input interfaces 10 can be connected to the wake-up circuit 20. Control switch 21 has an output pin 24, and powered device 200 includes a control unit 210, with output pin 24 being configured to be coupled to control unit 210, so that wake-up circuit 20 may send a wake-up signal to control unit 210 via output pin 24. Thus, when at least one input interface 10 of the plurality of input interfaces 10 is connected to the power supply, the control switch 21 in the wake-up circuit 20 is in a conductive state, and at this time, the output pin 24 of the control switch 21 may output a wake-up signal, and since the wake-up signal is used to instruct the control unit 210 to control the operation circuit corresponding to the one input interface 10 connected to the power supply to be conductive, the control unit 210 may control the operation circuit corresponding to the one input interface 10 connected to the power supply to be conductive according to the wake-up signal, so that the one input interface 10 connected to the power supply may charge the electric equipment 200 through the corresponding operation circuit.

That is, in the embodiment of the present utility model, the plurality of input interfaces 10 share one wake-up circuit 20, and the output pin 24 of the control switch 21 in the wake-up circuit 20 can output a wake-up signal, so that the control unit 210 can control the operation of one path of operation circuit corresponding to the input interface 10 connected to the power supply according to the wake-up signal, so that the plurality of input interfaces 10 and the plurality of operation circuits can normally operate, thereby realizing the charging of the electric equipment 200. In the embodiment of the present utility model, the problem that a plurality of wake-up circuits 20 need to be provided for the charging circuit 100 having a plurality of input interfaces 10 can be avoided, and because one wake-up circuit 20 is provided in the charging circuit 100 provided in the embodiment of the present utility model, the problem that a plurality of control switches 21 need to be provided, and the output pins 24 of the control switches 21 need to be connected with only one interface of the control unit 210, and the problem that a plurality of interfaces of the control unit 210 need to be occupied can also be avoided, so that the cost of the charging circuit 100 can be prevented from being higher, and in addition, the embodiment of the present utility model reduces the number of wake-up circuits 20, so that the wiring of the charging circuit 100 is simpler.

The case where at least one input interface 10 of the plurality of input interfaces 10 is connected to a power supply includes the case where one input interface 10 of the plurality of input interfaces 10 is connected to a power supply and two or more input interfaces 10 of the plurality of input interfaces 10 are connected to a power supply. In the case that one input interface 10 of the plurality of input interfaces 10 is connected to the power supply, the control unit 210 may control the working circuit corresponding to the one input interface 10 connected to the power supply to be turned on according to the wake-up signal, and at this time, the working circuit corresponding to the one input interface 10 works, so that the electric device 200 may be charged; in the case that two or more input interfaces 10 of the plurality of input interfaces 10 are connected to the power supply, the control unit 210 may acquire the order in which the two or more input interfaces 10 are connected to the power supply, determine one input interface 10 connected to the power supply first, control the operation circuit corresponding to the one input interface 10 connected to the power supply first to be turned on according to the wake-up signal, and at this time, the operation circuit corresponding to the one input interface 10 connected to the power supply first is operated, so as to charge the electric device 200. Alternatively, the control unit 210 may set the charging priority of the plurality of input interfaces 10 in advance, and when two or more input interfaces 10 among the plurality of input interfaces 10 are connected to the power supply, the operation circuit in which the input interface 10 having the higher charging priority is located may be controlled to operate.

In addition, in some embodiments, as shown in fig. 2, the wake-up circuit 20 may further include a first resistor 22 and a second resistor 23, where the plurality of input interfaces 10 are connected to the first resistor 22, the first resistor 22 is connected in series with the second resistor 23, the second resistor 23 is grounded, a first end of the control switch 21 is connected to the first resistor 22 and the second resistor 23, a second end of the control switch 21 is grounded, and a third end of the control switch 21 is connected to the output pin 24.

The wake-up circuit 20 further comprises a first resistor 22 and a second resistor 23, the first resistor 22 is connected in series with the second resistor 23, the first resistor 22 is connected with the plurality of input interfaces 10, the second resistor 23 is grounded, the first end of the control switch 21 is respectively connected between the first resistor 22 and the second resistor 23, or the first end of the control switch 21 is connected between the first resistor 22 and the second resistor 23 which are connected in series, the second end of the control switch 21 is grounded, the third end of the control switch 21 is connected with an output pin 24, namely, the first resistor 22, the second resistor 23 and the control switch 21 are connected to form the wake-up circuit 20, the first resistor 22 is connected with the plurality of input interfaces 10, and the connection between the plurality of input interfaces 10 and the wake-up circuit 20 is realized. Thus, when at least one input interface 10 is connected to a power supply, a path is formed among the input interface 10, the first resistor 22 and the second resistor 23 connected to the power supply, the first end of the control switch 21 has a level signal, so that the control switch 21 can be in a conducting state, at this time, the third end of the control switch 21 has a level signal, and a wake-up signal can be output to the output pin 24, so that the control unit 210 can control the working circuit corresponding to the input interface 10 connected to the power supply to be conducted according to the wake-up signal. That is, in the case that the input interface 10 connected to the power supply is connected to the power supply, the control switch 21 in the wake-up circuit 20 may be in a conductive state so that the control switch 21 may output a wake-up signal.

In addition, in some embodiments, the control switch 21 may include any one of a metal oxide semiconductor field effect transistor (Metal Oxide Semiconductor Field Effect Transistor, MOS), a triode, an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT).

The control switch 21 may be of different types, for example, the control switch 21 may be a MOS transistor, a triode or an IGBT, and the MOS transistor, the triode or the IGBT may be turned on when the at least one input interface 10 is connected to a power supply, and the description is given here of the case where the control switch 21 is a MOS transistor: the MOS tube is provided with a source electrode, a drain electrode and a grid electrode, the grid electrode of the MOS tube can be a first end of the MOS tube, the source electrode of the MOS tube can be a second end of the MOS tube, the drain electrode of the MOS tube can be a third end of the MOS tube, namely, under the condition that the control switch 21 is the MOS tube, the grid electrode of the MOS tube is connected between the first resistor 22 and the second resistor 23, the source electrode of the MOS tube is grounded, the drain electrode of the MOS tube is used for being connected with an output pin 24, and the wake-up circuit 20 can output a wake-up signal through the drain electrode of the MOS tube. For the case that the control switch 21 is a triode or an IGBT, corresponding pins of the triode or the IGBT may be set as the first end of the control switch 21, the second end of the control switch 21, and the third end of the control switch 21 according to the working principle of the triode or the IGBT, which is not described herein.

Of course, the control switch 21 may be any other type of element, and the specific type of the control switch 21 is not particularly limited, so long as it can change the level signal of one pin when none of the plurality of input interfaces 10 is connected to the power source and when at least one of the input interfaces 10 is connected to the power source.

In addition, in some embodiments, the working circuits may include a first working circuit 31 and a second working circuit 32, the input interface 10 includes a first input interface 11 and a second input interface 12, the first working circuit 31 is connected to the first input interface 11, the second working circuit 32 is connected to the second input interface 12, the first working circuit 31 and the second working circuit 32 are both connected to the output interface 40, the output interface 40 is used to be connected to the energy storage module 220 in the electric device 200, and the charging circuit 100 charges the energy storage module 220 through the output interface 40.

In the embodiment of the present utility model, the number of the working circuits and the number of the input interfaces 10 may be 2, at this time, the working circuits include a first working circuit 31 and a second working circuit 32, the input interfaces 10 include a first input interface 11 and a second input interface 12, the first working circuit 31 is connected to the first input interface 11, and the second working circuit 32 is connected to the second input interface 12, so that in the case that the first input interface 11 is connected to a power source, a voltage signal exists at the first input interface 11, and the voltage signal may enter the first working circuit 31, so that the first working circuit 31 may work; in the case where the second input interface 12 is connected to a power source, there will be a voltage signal at the second input interface 12, and the voltage signal may enter the second operating circuit 32, so that the second operating circuit 32 may operate. Since the first working circuit 31 and the second working circuit 32 are both connected to the connection and output interface 40, and the output interface 40 is connected to the energy storage module 220 in the electric device 200, the electric energy of the power supply can be transferred to the output interface 40 no matter whether the first working circuit 31 works or the second working circuit 32 works, and the energy storage module 220 can be charged through the output interface 40, i.e. no matter whether the first working circuit 31 is connected to the power supply or the second working circuit 32 is connected to the power supply, the energy storage module 220 can be charged. The first input interface 11 may be a Micro USB interface, the second input interface 12 may be a type_c interface, and of course, the first input interface 11 and the second input interface 12 may also be other TYPEs of interfaces, for example, a type_a interface, a lighting interface, etc., and the specific TYPEs of the first input interface 11 and the second input interface 12 are not specifically limited herein.

IN the following, the first input interface 11 may be a Micro USB interface, the second input interface 12 may be a type_c interface, as shown IN fig. 4, fig. 4 shows a schematic diagram of the first input interface 11, the first input interface 11 has five pins in+, D-, d+, ID, and GND, the first working circuit 31 may be connected to the in+ pin of the first input interface 11, and the ground part IN the first working circuit 31 may be connected to the GND pin of the first input interface 11; as shown in fig. 5, fig. 5 shows a schematic diagram of the second input interface 12, where the second input interface 12 has a plurality of pins, the plurality of pins include VBUS pins and GND pins, and the plurality of pins are symmetrically distributed on two sides of A, B, 12 pins in total are provided on the a side and 12 pins from pin A1 to pin a12, 12 pins in total are provided on the B side and B1 to pin B12 are also provided on the B side, so that the second input interface 12 may be connected to the power supply in a positive or reverse manner, in this embodiment of the present utility model, the second working circuit 32 may be connected to the B4 pin on the B side, that is, the VBUS pin, and the ground part in the second working circuit 32 may be connected to the B12 pin on the B side, that is, the GND pin.

It should be noted that, in the embodiment of the present utility model, the number of the working circuits and the input interfaces 10 may also be other values, for example, the number of the working circuits and the input interfaces 10 may be 3, where the working circuits may further include a third working circuit, the input interfaces 10 may further include a third input interface 10, the third input interface 10 is connected to the third working circuit, the third working circuit may further be connected to the output interface 40, and the third input interface 10 may further be connected to the wake-up circuit 20, so that, in a case where the third input interface 10 is connected to the power supply, the wake-up circuit 20 may also output a wake-up signal, and the control unit 210 may control the third working circuit to operate according to the wake-up signal, so that whether the third input interface 10 is connected to the power supply or may also charge the energy storage module 220. Of course, the number of the working circuits and the input interfaces 10 may also be other values, for example, 4, 5, 6, etc., and the embodiments of the present utility model are not limited herein specifically for the number of the working circuits and the input interfaces 10.

Additionally, in some embodiments, as shown in fig. 2, the first working circuit 31 may include a third resistor 311, a fourth resistor 312, a fifth resistor 313, a sixth resistor 314, a seventh resistor 315, a first sub-control switch 316, a second sub-control switch 317, and a third sub-control switch 318; the first sub control switch 316 and the second sub control switch 317 are connected in series, a first end of the first sub control switch 316 is connected to the first input interface 11, a first end of the second sub control switch 317 is connected to the output interface 40, a second end of the first sub control switch 316 is connected to a second end of the second sub control switch 317, a third end of the first sub control switch 316 is connected to a third end of the second sub control switch 317, one end of the third resistor 311 is connected to a second end of the first sub control switch 316, the other end of the third resistor 311 is connected to a third end of the first sub control switch 316, one end of the fourth resistor 312 is connected to the other end of the third resistor 311, the other end of the fourth resistor 312 is connected to a first end of the third sub control switch 318, a second end of the third sub control switch 318 is grounded, one end of the fifth resistor 313 is connected to a third end of the third sub control switch 318, the other end of the fifth resistor 313 is grounded, and one end of the fifth resistor 313 is connected to the first control pin 3112; a first end of the sixth resistor 314 is connected to the first input interface 11, a second end of the sixth resistor 314 is connected to a first end of the seventh resistor 315, a second end of the seventh resistor 315 is grounded, a first detection pin 3111 is connected between the sixth resistor 314 and the seventh resistor 315, a voltage signal is provided at the first detection pin 3111 when the first input interface 11 is connected to a power source, and the control unit 210 is configured to set the first control pin 3112 to high level according to the voltage signal, so as to enable the first operating circuit 31 to operate.

The first working circuit 31 includes a third resistor 311, a fourth resistor 312, a fifth resistor 313, a sixth resistor 314, a seventh resistor 315, a first sub-control switch 316, a second sub-control switch 317, and a third sub-control switch 318. The first terminal of the first sub-control switch 316 is connected to the first input interface 11, the first terminal of the second sub-control switch 317 is connected to the output interface 40, the second terminal of the first sub-control switch 316 is connected to the second terminal of the second sub-control switch 317, and the third terminal of the first sub-control switch 316 is connected to the third terminal of the second sub-control switch 317, so that the first sub-control switch 316 and the second sub-control switch 317 can be connected in series. The third resistor 311 is connected between the first sub-control switch 316 and the second sub-control switch 317: one end of the third resistor 311 is connected to the second end of the first sub-control switch 316, and the other end of the third resistor 311 is connected to the third end of the first sub-control switch 316. One end of the fourth resistor 312 is connected to the other end of the third resistor 311, the other end of the fourth resistor 312 is connected to the first end of the third sub-control switch 318, the second end of the third sub-control switch 318 is grounded, one end of the fifth resistor 313 is connected to the third end of the third sub-control switch 318, the other end of the fifth resistor 313 is grounded, and one end of the fifth resistor 313 is connected to the first control pin 3112. In the case that the third resistor 311, the fourth resistor 312, the fifth resistor 313, the first sub-control switch 316, the second sub-control switch 317 and the third sub-control switch 318 are in the connection relationship, if the first control pin 3112 is set to the high level, the first sub-control switch 316 and the second sub-control switch 317 can be turned on, and are turned on with the first input interface 11 and the output interface 40, and the charging circuit 100 can operate normally to charge the energy storage module 220.

A first end of the sixth resistor 314 is connected to the first input interface 11, a second end of the sixth resistor 314 is connected to a first end of the seventh resistor 315, and a second end of the seventh resistor 315 is grounded, that is, the sixth resistor 314 is connected in series with the seventh resistor 315, and the sixth resistor 314 and the seventh resistor 315 after being connected in series are connected between the first input interface 11 and the ground or the common, so that a path is formed between the first input interface 11, the sixth resistor 314, the seventh resistor 315, the ground or the common when the first input interface 11 is connected to a power source. Since the first detection pin 3111 is connected between the sixth resistor 314 and the seventh resistor 315, there is a voltage signal at the first detection pin 3111 in case the first input interface 11 is connected to the power source. The control unit 210 may set the first control pin 3112 to a high level according to the voltage signal, so that the first sub-control switch 316 is turned on with the second sub-control switch 317, and the first operating circuit 31 operates normally at this time, and may transmit electric energy to the output interface 40 to charge the energy storage module 220.

That is, in the embodiment of the present utility model, when the first input interface 11 is connected to the power source, the sixth resistor 314 is turned on with the seventh resistor 315, and the voltage signal is present at the first detection pin 3111, the control unit 210 may determine that the first input interface 11 is in a state of being connected to the power source according to the voltage signal of the first detection pin 3111, and the control unit 210 may set the first control pin 3112 to a high level, so that the first operating circuit 31 is turned on to be in an operating state, and further, the first operating circuit 31 may charge the energy storage module 220 through the output pin 24.

It should be noted that, the first sub-control switch 316, the second sub-control switch 317, and the third sub-control switch 318 may be MOS transistors, at this time, the drain electrode of the MOS transistor is the first end of the MOS transistor, the source electrode of the MOS transistor is the second end of the MOS transistor, and the gate electrode of the MOS transistor is the third end of the MOS transistor. For convenience of description, the first sub-control switch 316 is referred to herein as a first MOS transistor, the second sub-control switch 317 is referred to herein as a second MOS transistor, and the third sub-control switch 318 is referred to herein as a third MOS transistor. The first MOS tube and the second MOS tube are connected in series, the drain electrode of the first MOS tube is connected to the first input interface 11, the drain electrode of the second MOS tube is connected to the output interface 40, the source electrode of the first MOS tube is connected with the source electrode of the second MOS tube, the grid electrode of the first MOS tube is connected with the grid electrode of the second MOS tube, the third resistor 311 is connected between the first MOS tube and the second MOS tube, one end of the third resistor 311 is connected with the source electrode of the first MOS tube, and the other end of the third resistor 311 is connected with the grid electrode of the first MOS tube. The other end of the fourth resistor 312 is connected to the drain of the third MOS transistor, the source of the third MOS transistor is grounded, and one end of the fifth resistor 313 is connected to the gate of the third MOS transistor. Of course, the first sub-control switch 316, the second sub-control switch 317, and the third sub-control switch 318 may be other elements, for example, the first sub-control switch 316, the second sub-control switch 317, and the third sub-control switch 318 may be a transistor, an IGBT, or the like.

Additionally, in some embodiments, as shown in fig. 2, the second working circuit 32 may include an eighth resistor 321, a ninth resistor 322, a tenth resistor 323, an eleventh resistor 324, a twelfth resistor 325, a fourth sub-control switch 326, a fifth sub-control switch 327, and a sixth sub-control switch 328; the fourth sub control switch 326 and the fifth sub control switch 327 are connected in series, the first end of the fourth sub control switch 326 is connected to the second input interface 12, the first end of the fifth sub control switch 327 is connected to the output interface 40, the second end of the fourth sub control switch 326 is connected to the second end of the fifth sub control switch 327, the third end of the fourth sub control switch 326 is connected to the third end of the fifth sub control switch 327, one end of the eighth resistor 321 is connected to the second end of the fourth sub control switch 326, the other end of the eighth resistor 321 is connected to the third end of the fourth sub control switch 326, one end of the ninth resistor 322 is connected to the other end of the eighth resistor 321, the other end of the ninth resistor 322 is connected to the first end of the sixth sub control switch 328, the second end of the sixth sub control switch 328 is grounded, one end of the tenth resistor 323 is connected to the third end of the sixth sub control switch 328, the other end of the tenth resistor 323 is grounded, and one end of the tenth resistor 323 is connected to the second control pin 3212; the first end of the eleventh resistor 324 is connected to the second input interface 12, the second end of the eleventh resistor 324 is connected to the first end of the twelfth resistor 325, the second end of the twelfth resistor 325 is grounded, a second detection pin 3211 is connected between the eleventh resistor 324 and the twelfth resistor 325, and when the second input interface 12 is connected to the power supply, a voltage signal is provided at the second detection pin 3211, and the control unit 210 is configured to set the second control pin 3212 to a high level according to the voltage signal, so that the second working circuit 32 works.

The second working circuit 32 includes an eighth resistor 321, a ninth resistor 322, a tenth resistor 323, an eleventh resistor 324, a twelfth resistor 325, a fourth sub-control switch 326, a fifth sub-control switch 327, and a sixth sub-control switch 328. The first terminal of the fourth sub-control switch 326 is connected to the second input interface 12, the first terminal of the fifth sub-control switch 327 is connected to the output interface 40, the second terminal of the fourth sub-control switch 326 is connected to the second terminal of the fifth sub-control switch 327, and the third terminal of the fourth sub-control switch 326 is connected to the third terminal of the fifth sub-control switch 327, so that the fourth sub-control switch 326 and the fifth sub-control switch 327 can be connected in series. The eighth resistor 321 is connected between the fourth sub-control switch 326 and the fifth sub-control switch 327: one end of the eighth resistor 321 is connected to the second end of the fourth sub-control switch 326, and the other end of the eighth resistor 321 is connected to the third end of the fourth sub-control switch 326. One end of the ninth resistor 322 is connected to the other end of the eighth resistor 321, the other end of the ninth resistor 322 is connected to the first end of the sixth sub-control switch 328, the second end of the sixth sub-control switch 328 is grounded, one end of the tenth resistor 323 is connected to the third end of the sixth sub-control switch 328, the other end of the tenth resistor 323 is grounded, and one end of the tenth resistor 323 is connected to the second control pin 3212. In the case where the eighth resistor 321, the ninth resistor 322, the tenth resistor 323, the fourth sub-control switch 326, the fifth sub-control switch 327 and the sixth sub-control switch 328 are in the connection relationship, if the second control pin 3212 is set to the high level, the fourth sub-control switch 326 and the fifth sub-control switch 327 may be turned on, and may be turned on with the second input interface 12 and the output interface 40, and the charging circuit 100 may operate normally to charge the energy storage module 220.

The first end of the eleventh resistor 324 is connected to the second input interface 12, the second end of the eleventh resistor 324 is connected to the first end of the twelfth resistor 325, and the second end of the twelfth resistor 325 is grounded, that is, the eleventh resistor 324 is connected in series with the twelfth resistor 325, and the eleventh resistor 324 and the twelfth resistor 325 after being connected in series are connected between the second input interface 12 and the ground or the common, so that a path is formed between the second input interface 12, the eleventh resistor 324, the twelfth resistor 325, the ground or the common when the second input interface 12 is connected to the power source. Since the second detection pin 3211 is connected between the eleventh resistor 324 and the twelfth resistor 325, when the second input interface 12 is connected to the power source, a voltage signal is present at the second detection pin 3211. The control unit 210 may set the second control pin 3212 to a high level according to the voltage signal, so that the fourth sub-control switch 326 is turned on with the fifth sub-control switch 327, and at this time, the second operating circuit 32 operates normally, and may transmit electric energy to the output interface 40 to charge the energy storage module 220.

That is, in the embodiment of the present utility model, when the second input interface 12 is connected to the power supply, the eleventh resistor 324 is turned on with the twelfth resistor 325, and at this time, the second detection pin 3211 has a voltage signal, the control unit 210 may determine that the second input interface 12 is in a state of being connected to the power supply according to the voltage signal of the second detection pin 3211, and further the control unit 210 may place the second control pin 3212 at a high level, so that the second working circuit 32 is turned on and is in a working state, and further, the second working circuit 32 may charge the energy storage module 220 through the output pin 24.

It should be noted that, the fourth sub-control switch 326, the fifth sub-control switch 327, and the sixth sub-control switch 328 may be MOS transistors, at this time, the drain electrode of the MOS transistor is the first end of the MOS transistor, the source electrode of the MOS transistor is the second end of the MOS transistor, and the gate electrode of the MOS transistor is the third end of the MOS transistor. Specific connection modes of the MOS transistors are already described in the above embodiments, and the embodiments of the present utility model are not described herein. Of course, the first sub-control switch 316, the second sub-control switch 317, and the third sub-control switch 318 may be other elements, for example, the first sub-control switch 316, the second sub-control switch 317, and the third sub-control switch 318 may be a transistor, an IGBT, or the like.

In addition, in some embodiments, as shown in fig. 2, the charging circuit 100 may further include a plurality of diodes 25, where the diodes 25 are connected between the input interface 10 and the wake-up circuit 20, and the plurality of diodes 25 are in one-to-one correspondence with the plurality of input interfaces 10, the anode of the diodes 25 is connected to the input interface 10, and the cathode of the diodes 25 is connected to the wake-up circuit 20.

The charging circuit 100 further includes a plurality of diodes 25, the diodes 25 are connected between the input interface 10 and the wake-up circuit 20, and the plurality of diodes 25 are in one-to-one correspondence with the plurality of input interfaces 10, that is, one diode 25 is connected between one input interface 10 and the wake-up circuit 20, and the number of input interfaces 10 is the same as the number of diodes 25. In case the number of input interfaces 10 is 2, the number of diodes 25 is 2, wherein one diode 25 is connected between the first input interface 11 and the wake-up circuit 20, and one diode is connected between the second input interface 12 and the wake-up circuit 20. In case the number of input interfaces 10 is other, a diode 25 is connected between each input interface 10 and the wake-up circuit 20.

Because the plurality of input interfaces 10 are all connected with the wake-up circuit 20, there is an electrical connection relation between the plurality of input interfaces 10, and the diode 25 is forward-conducting, and the anode of the diode 25 is connected with the input interfaces 10, and the cathode of the diode 25 is connected with the wake-up circuit 20, therefore, under the condition that the input interfaces 10 are connected with a power supply, the power of the power supply can flow to the wake-up circuit 20 through the input interfaces 10, the wake-up circuit 20 can output a wake-up signal to work normally, and the power cannot flow from one end of the wake-up circuit 20 to the input interfaces 10, so that the problem that the power flows backward from one of the input interfaces 10 to the other input interfaces 10 can be avoided.

In addition, as shown in fig. 2, for convenience of drawing, network labels are provided at the first input interface 11 and the second input interface 12, and positions having the same network labels in the circuit diagram are connected together. For example, two locations labeled C_IN IN FIG. 2 are connected together. IN fig. 2, the charging circuit further includes other parts, such as a filter circuit, a voltage stabilizing circuit, etc., which may be set according to the electric device 200, and this part may refer to the related art, which is not related to the embodiment of the present utility model, and not shown IN fig. 2, and IN this part, there are also elements to be connected to the first input interface 11, and IN the drawing, a network reference number m_in may be also marked at a connection with the first input interface 11.

In the embodiment of the present utility model, the charging circuit 100 includes an input interface 10, a wake-up circuit 20 and a working circuit, wherein the number of the input interface 10 and the number of the working circuits are all multiple, one working circuit is connected with one input interface 10, i.e. one input interface 10 corresponds to one working circuit, and when one input interface 10 is connected with a power supply, the working circuit where the input interface 10 is located can work to charge the electric equipment 200. The wake-up circuit 20 comprises a control switch 21, and the plurality of input interfaces 10 are electrically connected to the control switch 21, so that the plurality of input interfaces 10 can be connected to the wake-up circuit 20. Control switch 21 has an output pin 24, and powered device 200 includes a control unit 210, with output pin 24 being configured to be coupled to control unit 210, so that wake-up circuit 20 may send a wake-up signal to control unit 210 via output pin 24. Thus, when at least one input interface 10 of the plurality of input interfaces 10 is connected to the power supply, the control switch 21 in the wake-up circuit 20 is in a conductive state, and at this time, the output pin 24 of the control switch 21 may output a wake-up signal, and since the wake-up signal is used to instruct the control unit 210 to control the operation circuit corresponding to the one input interface 10 connected to the power supply to be conductive, the control unit 210 may control the operation circuit corresponding to the one input interface 10 connected to the power supply to be conductive according to the wake-up signal, so that the one input interface 10 connected to the power supply may charge the electric equipment 200 through the corresponding operation circuit. That is, in the embodiment of the present utility model, the plurality of input interfaces 10 share one wake-up circuit 20, and the output pin 24 of the control switch 21 in the wake-up circuit 20 can output a wake-up signal, so that the control unit 210 can control the operation of one path of operation circuit corresponding to the input interface 10 connected to the power supply according to the wake-up signal, so that the plurality of input interfaces 10 and the plurality of operation circuits can normally operate, thereby realizing the charging of the electric equipment 200. In the embodiment of the present utility model, the problem that a plurality of wake-up circuits 20 need to be provided for the charging circuit 100 having a plurality of input interfaces 10 can be avoided, and because one wake-up circuit 20 is provided in the charging circuit 100 provided in the embodiment of the present utility model, the problem that a plurality of control switches 21 need to be provided, and the output pins 24 of the control switches 21 need to be connected with only one interface of the control unit 210, and the problem that a plurality of interfaces of the control unit 210 need to be occupied can also be avoided, so that the cost of the charging circuit 100 can be prevented from being higher, and in addition, the embodiment of the present utility model reduces the number of wake-up circuits 20, so that the wiring of the charging circuit 100 is simpler.

The embodiment of the present utility model further provides an electric device 200, as shown in fig. 6, where the electric device 200 includes a control unit 210 and the charging circuit 100 in any of the foregoing embodiments; the control unit 210 has a wake-up pin, which is connected to the output pin 24, and when at least one input interface 10 of the plurality of input interfaces 10 is connected to the power source, the control switch 21 is turned on, and the wake-up pin receives a wake-up signal, where the wake-up signal is used to instruct the control unit 210 to control the operation circuit corresponding to the one input interface 10 connected to the power source to be turned on.

The electric device 200 includes a control unit 210 and a charging circuit 100, where the control unit 210 has a wake-up pin, and the wake-up pin can be connected with an output pin 24 in the wake-up circuit 20, so that the wake-up circuit 20 can transmit a wake-up signal to the wake-up pin, so that the control unit 210 can receive the wake-up signal, and thus the control unit 210 can confirm that at least one input interface 10 is connected with a power source according to the wake-up signal, so that the control unit 210 controls a working circuit corresponding to the input interface 10 connected with the power source to be conducted, so that the charging circuit 100 can work normally. In the electric equipment 200 provided by the embodiment of the utility model, the plurality of input interfaces 10 of the charging circuit 100 share one wake-up circuit 20, so that the wake-up circuit 20 only occupies one wake-up pin of the control unit 210, the cost of the charging circuit 100 can be reduced, and the wiring of the charging circuit 100 is simpler.

It should be noted that the control unit 210 may be a micro control unit 210 (Microcontroller Unit, MCU), and the micro control unit 210 has control and processing functions, so as to implement intelligent and lightweight control. Alternatively, the control unit 210 may also be a central processing unit (Central Processing Unit, CPU) or the like, and the embodiments of the present utility model are not specifically limited herein as to the specific type of the control unit 210.

In addition, in some embodiments, as shown in fig. 6, the working circuit may include a first working circuit 31 and a second working circuit 32, the input interface 10 includes a first input interface 11 and a second input interface 12, the first working circuit 31 is connected to the first input interface 11, the second working circuit 32 is connected to the second input interface 12, the control unit 210 further includes a first pin 211, a second pin 212, a third pin 213, and a fourth pin 214, the first working circuit 31 is connected to a first control pin 3112 and a first detection pin 3111, the second working circuit 32 is connected to a second control pin 3212 and a second detection pin 3211, the first detection pin 3111 is connected to the first pin 211, the first control pin 3112 is connected to the second pin 212, the second detection pin 3211 is connected to the third pin 213, and the second control pin 3212 is connected to the fourth pin 214.

The working circuit may include a first working circuit 31 and a second working circuit 32, the input interface 10 includes a first input interface 11 and a second input interface 12, the first working circuit 31 is connected with the first input interface 11, the second working circuit 32 is connected with the second input interface 12, the first working circuit 31 is connected with a first control pin 3112 and a first detection pin 3111, and the second working circuit 32 is connected with a second control pin 3212 and a second detection pin 3211. The control unit 210 further has a first pin 211, a second pin 212, a third pin 213, and a fourth pin 214, wherein the first detection pin 3111 is connected to the first pin 211, the first control pin 3112 is connected to the second pin 212, the second detection pin 3211 is connected to the third pin 213, and the second control pin 3212 is connected to the fourth pin 214. That is, the first detection pin 3111, the first control pin 3112, the second detection pin 3211, and the second control pin 3212 are connected to pins in the control unit 210, so that the control unit 210 can read voltage signals of the first detection pin 3111 and the second detection pin 3211, and the control unit 210 can also operate the first operating circuit 31 or the second operating circuit 32 by setting the first control pin 3112 or the second control pin 3212 to a high level.

The following describes the operation of the charging circuit 100 and the control unit 210 when the first input interface 11 is connected to a power source: after the first input interface 11 is connected to the power source, the control switch 21 in the wake-up circuit 20 is in a conductive state, at this time, the output pin 24 connected to the control switch 21 may output a wake-up signal, the wake-up pin of the control unit 210 may receive the wake-up signal, at the same time, the first detection pin 3111 in the first working circuit 31 has a voltage signal, the first pin 211 of the control unit 210 may read the voltage signal and determine that the first input interface 11 is connected to the power source, and then the control unit 210 may control the level signal at the second pin 212 to set the first control pin 3112 to a high level, so that the first working circuit 31 operates normally and outputs electrical energy to the outside through the output interface 40. Reference is made to the above description for the case where the first input interface 11 is connected to a power source, and embodiments of the present utility model are not particularly limited herein.

In the embodiment of the present utility model, when the plurality of input interfaces 10 are all connected to the power source, the following description describes a case in which the working circuits include the first working circuit 31 and the second working circuit 32, and the input interfaces 10 include the first input interface 11 and the second input interface 12: under the condition that the first input interface 11 and the second input interface 12 are both connected with a power supply, the control switch 21 in the wake-up circuit 20 is in a conducting state, at this time, the output pin 24 connected with the control switch 21 can output a wake-up signal, meanwhile, a voltage signal is arranged at the first detection pin 3111 in the first working circuit 31, a voltage signal is arranged at the second detection pin 3211 of the second working circuit 32, the voltage signals can be read at the first pin 211 and the third pin 213 of the control unit 210, at this time, the control unit 210 can determine the sequence of connecting the first input interface 11 and the second input interface 12 with the power supply according to the sequence of the voltage signals read at the first pin 211 and the third pin 213, and control the working circuit where the input interface 10 connected with the power supply earlier is located to be conducted according to the connection sequence; or the control unit 210 may be preset with the charging priorities of the first input interface 11 and the second input interface 12, where the control switch 21 in the wake-up circuit 20 is in a conducting state when the first input interface 11 and the second input interface 12 are connected to the power source, and at this time, the output pin 24 connected to the control switch 21 may output the wake-up signal, meanwhile, the first detection pin 3111 in the first working circuit 31 has a voltage signal, and the second detection pin 3211 in the second working circuit 32 has a voltage signal, and the control unit 210 controls the working circuit where the input interface 10 with a higher priority is located to be conducting according to the priority information. For example, if the charging priority of the first input interface 11 is preset to be higher in the control unit 210, in a case where both the first input interface 11 and the second input interface 12 are connected to the power source, the control unit 210 may control the level signal at the second pin 212 to set the first control pin 3112 to a high level, so that the first working circuit 31 works normally and outputs electric energy to the outside through the output interface 40.

It should be noted that, when the control unit 210 reads the voltage signal at the first detection pin 3111 and/or the second detection pin 3211, the voltage may also be calculated, and the working circuit is not controlled to work when the voltage is in an abnormal state. For example, when the rated charging voltage of a certain electric device 200 is 5V and the electric device is charged through the first input interface 11 once, after the control unit 210 detects the voltage signal of the first detection pin 3111, the voltage at the first input interface 11 is calculated to be 10V, that is, the charging circuit 100 is in an overvoltage state, the first control pin 3112 may not be set at a high level at this time, so as to avoid damage to the electric device, and of course, the first control pin 3112 may not be set at a high level when the charging circuit 100 is in an under-voltage state, so as to ensure safety of the electric device 200.

In addition, in some embodiments, as shown in fig. 6, the powered device 200 may further include an energy storage module 220, where the energy storage module 220 is electrically connected to the output interface 40, the output interface 40 is connected to both the first working circuit 31 and the second working circuit 32, and the charging circuit 100 charges the energy storage module 220 through the output interface 40.

The electric equipment 200 further comprises an energy storage module 220, the energy storage module 220 is electrically connected with the output interface 40, and since the output interface 40 is connected with the first working circuit 31 and the second working circuit 32, the first working circuit 31 or the second working circuit 32 can transmit electric energy to the energy storage module 220 to charge the energy storage module 220.

It should be noted that the charging device may further have a charging management chip or a charging management circuit, where the output interface 40 may be connected to the energy storage module 220 through the charging management chip or the charging management circuit, so that the working circuit may charge the energy storage module 220 through the charging management chip or the charging management circuit, and the voltage and the current entering the energy storage module 220 may reach a controllable state through the charging management chip or the charging management circuit, so that the charging states of each stage of charging may be effectively controlled, and overdischarge, overvoltage, overcharge, over-temperature and the like of the energy storage module 220 are prevented.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

While alternative embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the scope of the embodiments of the utility model.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in an article or terminal device comprising the element.

While the foregoing has been described in some detail by way of illustration of the principles and embodiments of the utility model, and while in accordance with the principles and implementations of the utility model, those skilled in the art will readily recognize that the utility model is not limited thereto.

Claims

1. The charging circuit is characterized by comprising a control unit, wherein the charging circuit comprises an input interface, a wake-up circuit and a working circuit, the number of the input interface and the number of the working circuit are all multiple, and one working circuit is connected with one input interface;

2. The charging circuit of claim 1, wherein the wake-up circuit further comprises a first resistor and a second resistor, the plurality of input interfaces are all connected with the first resistor, the first resistor is connected in series with the second resistor, the second resistor is grounded, a first end of the control switch is respectively connected with the first resistor and the second resistor, a second end of the control switch is grounded, and a third end of the control switch is connected with the output pin.

3. The charging circuit of claim 1, wherein the operating circuit comprises a first operating circuit and a second operating circuit, the input interface comprises a first input interface and a second input interface, the first operating circuit is connected with the first input interface, the second operating circuit is connected with the second input interface, the first operating circuit and the second operating circuit are both connected to an output interface, the output interface is used for being connected with an energy storage module in the electric equipment, and the charging circuit charges the energy storage module through the output interface.

4. The charging circuit of claim 3, wherein the first operating circuit comprises a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first sub-control switch, a second sub-control switch, and a third sub-control switch;

5. The charging circuit of claim 3, wherein the second operating circuit comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fourth sub-control switch, a fifth sub-control switch, and a sixth sub-control switch;

6. The charging circuit of claim 1, further comprising a plurality of diodes connected between the input interface and the wake-up circuit, wherein the plurality of diodes are in one-to-one correspondence with the plurality of input interfaces, wherein a positive electrode of the diode is connected with the input interface, and wherein a negative electrode of the diode is connected with the wake-up circuit.

7. The charging circuit of claim 1, wherein the control switch comprises any one of a metal oxide semiconductor field effect transistor, a triode, and an insulated gate bipolar transistor.

8. A powered device, characterized in that the powered device comprises a control unit and a charging circuit as claimed in any one of claims 1-7;

9. The powered device of claim 8, wherein the operating circuit comprises a first operating circuit and a second operating circuit, the input interface comprises a first input interface and a second input interface, the first operating circuit is connected with the first input interface, the second operating circuit is connected with the second input interface, the control unit further comprises a first pin, a second pin, a third pin, and a fourth pin, the first operating circuit is connected with a first control pin and a first detection pin, the second operating circuit is connected with a second control pin and a second detection pin, the first detection pin is connected with the first pin, the first control pin is connected with the second pin, the second detection pin is connected with the third pin, and the second control pin is connected with the fourth pin.

10. The powered device of claim 9, further comprising an energy storage module electrically connected to an output interface, the output interface being connected to both the first and second operating circuits, the charging circuit charging the energy storage module through the output interface.