Electronic equipment, charging system and charging module

Abstract

The utility model relates to electronic equipment, a charging system and a charging module. The electronic device includes: a battery; the circuit board comprises a switching circuit, and a first side of the switching circuit is coupled with the battery; the first side of the first connecting part is coupled with the second side of the switching circuit, and the second side of the first connecting part is used for being coupled with charging equipment; wherein the switching circuit and the first parasitic inductor in the first connecting part form a charging circuit, and the charging circuit is used for charging the battery. The charging circuit is formed by the switching circuit and the first parasitic inductor, and an additional inductor does not need to be arranged in the charging circuit, so that the size of the charging circuit is reduced. Meanwhile, an additional inductor does not need to be arranged in the charging circuit, so that the cost of the charging circuit is reduced, and the cost of the electronic equipment is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of charging technology, and in particular to an electronic device, a charging system and a charging module. Background Art

[0002] At present, charging devices charge batteries through charging circuits in electronic devices to provide appropriate charging voltages to batteries, thereby achieving fast charging without affecting the life of the batteries. However, in the process of charging the batteries, since the charging circuits need to convert voltages, the charging circuits have the problem of being large in size. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides an electronic device, a charging system and a charging module.

[0004] According to a first aspect of the present disclosure, an electronic device is provided, the electronic device comprising:

[0005] Battery;

[0006] a circuit board, the circuit board comprising a switch circuit, a first side of the switch circuit being coupled to the battery;

[0007] a first connection portion, wherein a first side of the first connection portion is coupled to a second side of the switch circuit, and the second side of the first connection portion is used to couple to a charging device;

[0008] The switch circuit and the first parasitic inductance in the first connecting portion form a charging circuit, and the charging circuit is used to charge the battery.

[0009] In some embodiments of the present disclosure, the charging circuit includes a buck circuit; or, the charging circuit includes a boost circuit; or, the charging circuit includes a buck-boost circuit.

[0010] In some embodiments of the present disclosure, the switch circuit includes:

[0011] a first switch unit, wherein a first end of the first switch unit is coupled to a first end of the first connecting portion, and a second end of the first switch unit is coupled to a positive electrode of the battery;

[0012] a second switch unit, wherein a first end of the second switch unit is coupled to the second end of the first connecting portion and the negative electrode of the battery;

[0013] a third switch unit, wherein a first end of the third switch unit is coupled to a second end of the second switch unit, and a second end of the third switch unit is coupled to a second end of the first switch unit;

[0014] A first capacitor, wherein a first end of the first capacitor is coupled to a first end of the first switch unit, and a second end of the first capacitor is coupled to a second end of the second switch unit and a first end of the third switch unit;

[0015] A second capacitor, wherein a first end of the second capacitor is coupled to the second end of the first switch unit and the second end of the third switch unit, and a second end of the second capacitor is coupled to the first end of the second switch unit.

[0016] In some embodiments of the present disclosure, the first switch unit includes a first transistor; the second switch unit includes a second transistor; and the third switch unit includes a third transistor.

[0017] In some embodiments of the present disclosure, in a first state of the charging circuit, the first switch unit and the second switch unit are disconnected, and the third switch unit is turned on; in a second state of the charging circuit, the first switch unit and the second switch unit are turned on, and the third switch unit is disconnected.

[0018] In some embodiments of the present disclosure, in the third state of the charging circuit, the first switch unit is turned on, and the second switch unit and the third switch unit are turned off.

[0019] In some embodiments of the present disclosure, the circuit board further includes:

[0020] A control circuit is coupled to a control end of the first switch unit, a control end of the second switch unit, and a control end of the third switch unit.

[0021] In some embodiments of the present disclosure, the voltage output by the charging device is adjustable; or, the voltage output by the charging device is fixed.

[0022] In some embodiments of the present disclosure, the electronic device further includes an interface; the second side of the first connecting portion is coupled to the interface;

[0023] The interface is coupled to the charging device via a second connecting portion, and the switching circuit, the first parasitic inductance, and the second parasitic inductance in the second connecting portion constitute the charging circuit.

[0024] In some embodiments of the present disclosure, the circuit board includes a mainboard; and / or the first connecting portion includes a flexible circuit board; and / or the second connecting portion includes a data line; and / or the interface includes a Type-C interface.

[0025] According to a second aspect of the present disclosure, a charging system is provided, which includes a charging device, a data line and the electronic device as described above, wherein the electronic device and the charging device are connected via the data line; wherein the first connecting portion includes a flexible circuit board; the switching circuit and the first parasitic inductance in the flexible circuit board and the second parasitic inductance in the data line constitute the charging circuit.

[0026] According to a third aspect of the present disclosure, a charging module is provided, the charging module comprising:

[0027] A circuit board, the circuit board comprising a switch circuit, wherein a first side of the switch circuit is used to couple with a battery;

[0028] a first connection portion, wherein a first side of the first connection portion is coupled to a second side of the switch circuit, and the second side of the first connection portion is used to couple to a charging device;

[0029] The switch circuit and the first parasitic inductance in the first connecting portion form a charging circuit, and the charging circuit is used to charge the battery.

[0030] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0031] The electronic device includes a battery, a circuit board, and a first connection portion. The switch circuit in the circuit board is coupled between the battery and the first connection portion, and is coupled to the charging device through the first connection portion. The switch circuit and the first parasitic inductance in the first connection portion constitute a charging circuit, and the charging device charges the battery through the charging circuit. By constituting the charging circuit with the switch circuit and the first parasitic inductance, no additional inductance is required in the charging circuit, thereby reducing the volume of the charging circuit. At the same time, since no additional inductance is required in the charging circuit, the cost of the charging circuit is reduced, thereby reducing the cost of the electronic device.

[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0034] Figure 1 It is a structural schematic diagram of a charging circuit;

[0035] Figure 2 is a schematic structural diagram of an electronic device provided by an exemplary embodiment of the present disclosure;

[0036] Figure 3is a structural schematic diagram of an electronic device provided by another exemplary embodiment of the present disclosure;

[0037] Figure 4 is a structural schematic diagram of an electronic device provided by another exemplary embodiment of the present disclosure;

[0038] Figure 5 is a structural schematic diagram of an electronic device provided by another exemplary embodiment of the present disclosure;

[0039] Figure 6 is a system block diagram of an electronic device provided by an exemplary embodiment of the present disclosure.

[0040] In the figure:

[0041] 10-battery; 20-circuit board; 21-switch circuit; 22-control circuit; 30-first connection part; 40-charging device; 50-interface; 60-second connection part; 400-electronic device; 402-processing component; 404-memory; 406-power supply component; 408-multimedia component; 410-audio component; 412-input and output interface; 414-sensor component; 416-communication component; 420-processor; Lp1-first parasitic inductance; Lp2-second parasitic inductance; L-filter inductance; C1-first capacitor; C2-second capacitor; C3-third capacitor; C4-fourth capacitor; C5-fifth capacitor; T1-first transistor; T2-second transistor; T3-third transistor; D1-first diode; D2-second diode; D3-third diode; Vin-input voltage. DETAILED DESCRIPTION

[0042] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. On the contrary, they are only examples of devices and methods consistent with some aspects of the utility model as detailed in the attached claims. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0043] At present, charging devices charge batteries through charging circuits in electronic devices to provide appropriate charging voltages to batteries, thereby achieving fast charging without affecting the battery life. The charging circuit can convert the input voltage provided by the charging device into a stable and appropriate charging voltage to charge the battery, and can adjust the charging voltage during the battery charging process to reduce the battery charging time and increase the battery life.

[0044] In the related art, a charging circuit is provided, such as Figure 1 As shown, the charging circuit includes a first transistor T1, a second transistor T2, a filter inductor L and a first capacitor C1. The first transistor T1 and the second transistor T2 are turned on and off to reduce the input voltage Vin provided by the charging device, and provide a suitable charging voltage to the battery 10. However, since the charging circuit needs to be filtered by the filter inductor L, and the filter inductor L is relatively large, the charging circuit has a large volume problem.

[0045] Based on this, the present disclosure provides an electronic device, in which the original filter inductor in the charging circuit is replaced by the first parasitic inductor in the first connection part, and the charging circuit is formed by the first parasitic inductor and the switch circuit. Since the first parasitic inductor exists in the first connection part, the switch circuit can realize the function of step-down charging without additionally setting the filter inductor, thereby reducing the volume of the charging circuit. At the same time, since no additional inductor is required in the charging circuit, the cost of the charging circuit is reduced, thereby reducing the cost of the electronic device.

[0046] An exemplary embodiment of the present disclosure provides an electronic device, such as Figure 2 As shown, the electronic device includes a battery 10, a circuit board 20 and a first connection part 30. The circuit board 20 includes a switch circuit 21, and a first side of the switch circuit 21 is coupled to the battery 10. The first side of the first connection part 30 is coupled to the second side of the switch circuit 21, and the second side of the first connection part 30 is used to couple with a charging device 40. The switch circuit 21 and the first parasitic inductance Lp1 in the first connection part 30 constitute a charging circuit, and the charging circuit is used to charge the battery 10.

[0047] In this embodiment, the electronic device includes a battery, a circuit board, and a first connection portion. The switch circuit in the circuit board is coupled between the battery and the first connection portion, and is coupled to the charging device through the first connection portion. The switch circuit and the first parasitic inductance in the first connection portion constitute a charging circuit, and the charging device charges the battery through the charging circuit. By forming the charging circuit with the switch circuit and the first parasitic inductance, no additional inductance is required in the charging circuit, thereby reducing the volume of the charging circuit. At the same time, since no additional inductance is required in the charging circuit, the cost of the charging circuit is reduced, thereby reducing the cost of the electronic device.

[0048] In one embodiment, the charging circuit includes a buck circuit.

[0049] In this embodiment, since the charging circuit composed of the switch circuit and the first parasitic inductor includes a step-down circuit, the charging circuit can reduce the higher input voltage provided by the charging device to charge the battery, thereby increasing the service life of the battery. At the same time, since the first parasitic inductor is close to the charging device and far from the battery, the first parasitic inductor is located on the side with higher voltage, so that the average current flowing through the first parasitic inductor is lower, thereby reducing the loss of the charging circuit.

[0050] In one embodiment, the charging circuit includes a boost circuit.

[0051] In this embodiment, because the charging circuit formed by the switch circuit and the first parasitic inductance includes a boost circuit, the charging circuit can boost the relatively low input voltage provided by the charging device to charge the battery, thereby reducing the charging time of the battery.

[0052] In one embodiment, the charging circuit includes a buck-boost circuit.

[0053] In this embodiment, since the charging circuit formed by the switching circuit and the first parasitic inductance includes a buck-boost circuit, the charging circuit can increase or decrease the lower or higher input voltage provided by the charging device to charge the battery, thereby reducing the charging time of the battery and increasing the service life of the battery.

[0054] In one embodiment, if Figure 3 As shown, the switch circuit 21 includes a first switch unit, a second switch unit, a third switch unit, a first capacitor C1, and a second capacitor C2. The first end of the first switch unit is coupled to the first end of the first connection portion 30, and the second end of the first switch unit is coupled to the positive electrode of the battery 10. The first end of the second switch unit is coupled to the second end of the first connection portion 30 and the negative electrode of the battery 10. The first end of the third switch unit is coupled to the second end of the second switch unit, and the second end of the third switch unit is coupled to the second end of the first switch unit. The first end of the first capacitor C1 is coupled to the first end of the first switch unit, and the second end of the first capacitor C1 is coupled to the second end of the second switch unit and the first end of the third switch unit. The first end of the second capacitor C2 is coupled to the second end of the first switch unit and the second end of the third switch unit, and the second end of the second capacitor C2 is coupled to the first end of the second switch unit.

[0055] In this embodiment, the charging and discharging of the first parasitic inductance are realized by turning on and off the first switch unit, the second switch unit, and the third switch unit, so as to utilize the energy storage and energy release of the first parasitic inductance in conjunction with the first capacitor and the second capacitor to realize the function of voltage reduction. Since the charging circuit can reduce the high input voltage provided by the charging device to charge the battery, the service life of the battery is improved. In addition, since the voltage output by the charging circuit is adjustable, different voltages can be output according to the needs of the battery, thereby improving the charging speed of the battery.

[0056] Exemplarily, the capacitance of the first capacitor C1 may be equal to the capacitance of the second capacitor C2, or may not be equal to the capacitance of the second capacitor C2.

[0057] In one embodiment, the first switch unit includes a first transistor T1, the second switch unit includes a second transistor T2, and the third switch unit includes a third transistor T3.

[0058] In this embodiment, since the conduction loss of the transistor is low and easy to control, the loss of the charging circuit and the complexity of the charging circuit control are reduced.

[0059] Exemplarily, when the first transistor T1, the second transistor T2, and the third transistor T3 are N-type field effect transistors, the drain of the first transistor T1 is coupled to the first end of the first connection portion 30, and the source of the first transistor T1 is coupled to the positive electrode of the battery 10. The source of the second transistor T2 is coupled to the second end of the first connection portion 30 and the negative electrode of the battery 10. The drain of the third transistor T3 is coupled to the drain of the second transistor T2, and the source of the third transistor T3 is coupled to the source of the first transistor T1. The first end of the first capacitor C1 is coupled to the drain of the first transistor T1, and the second end of the first capacitor C1 is coupled to the drain of the second transistor T2 and the drain of the third transistor T3. The first end of the second capacitor C2 is coupled to the source of the first transistor T1 and the source of the third transistor T3, and the second end of the second capacitor C2 is coupled to the source of the second transistor T2.

[0060] Exemplarily, the charging circuit further includes a first diode D1, a second diode D2, a third diode D3, a third capacitor C3, a fourth capacitor C4 and a fifth capacitor C5. The anode of the first diode D1 is coupled to the source of the first transistor T1, and the cathode of the first diode D1 is coupled to the drain of the first transistor T1. The anode of the second diode D2 is coupled to the source of the second transistor T2, and the cathode of the second diode D2 is coupled to the drain of the second transistor T2. The anode of the third diode D3 is coupled to the source of the third transistor T3, and the cathode of the third diode D3 is coupled to the drain of the third transistor T3. The third capacitor C3 is coupled in parallel with the first diode D1, the fourth capacitor C4 is coupled in parallel with the second diode D2, and the fifth capacitor C5 is coupled in parallel with the third diode D3. Among them, the first diode D1 can be the body diode of the first transistor T1, the second diode D2 can be the body diode of the second transistor T2, and the third diode D3 can be the body diode of the third transistor T3.

[0061] In one embodiment, in the first state of the charging circuit, the first switch unit and the second switch unit are turned off, and the third switch unit is turned on. In the second state of the charging circuit, the first switch unit and the second switch unit are turned on, and the third switch unit is turned off.

[0062] In this embodiment, in the first state of the charging circuit, since the difference between the voltage at the current inflow end of the first parasitic inductor and the voltage at the current outflow end is less than zero, the current flowing through the first parasitic inductor continues to decrease. At this time, the first parasitic inductor discharges to charge the first capacitor and the second capacitor at the same time, and charges the battery through the second capacitor. In the second state of the charging circuit, since the difference between the voltage at the current inflow end of the first parasitic inductor and the voltage at the current outflow end is greater than zero, the current flowing through the first parasitic inductor continues to rise. At this time, the first parasitic inductor charges to charge the first capacitor and the second capacitor at the same time, and charges the battery through the first capacitor and the second capacitor at the same time. By alternately operating the charging circuit in the first state and the second state, the input voltage provided by the charging device can be reduced to provide a stable charging voltage to the battery, thereby improving the charging speed and service life of the battery.

[0063] Exemplarily, since the number of the first parasitic inductances Lp1 is multiple in the first connection part 30, each first parasitic inductance Lp1 is equivalent to one first parasitic inductance Lp1. In the first state of the charging circuit, the voltage at the first end of the equivalently combined first parasitic inductance Lp1 is the input voltage Vin, and the voltage at the second end of the equivalently combined first parasitic inductance Lp1 is twice the battery voltage Vbat. Since Vin < 2Vbat, the voltage difference between the first end and the second end of the equivalently combined first parasitic inductance Lp1 in the first state is less than zero, and the current flowing through the equivalently combined first parasitic inductance Lp1 continuously decreases. In the second state of the charging circuit, the voltage at the first end of the equivalently combined first parasitic inductance Lp1 is the input voltage Vin, and the voltage at the second end of the equivalently combined first parasitic inductance Lp1 is the battery voltage Vbat. Since Vbat < Vin, the voltage difference between the first end and the second end of the equivalently combined first parasitic inductance Lp1 in the first state is greater than zero, and the current flowing through the equivalently combined first parasitic inductance Lp1 continuously increases.

[0064] In one embodiment, in the third state of the charging circuit, the first switch unit is turned on, and the second switch unit and the third switch unit are turned off.

[0065] In this embodiment, since the input voltage of the charging device can be adjusted on the charging device side, the charging circuit only needs to transfer the input voltage to charge the battery, by controlling the first switch unit to be turned on and controlling the second switch unit and the third switch unit to be turned off. By keeping the states of the switch units in the charging circuit unchanged, the on - off of the switch units is avoided from generating switching losses, thereby reducing the losses of the charging circuit. At the same time, since the charging circuit can be applied to both adjustable - voltage and non - adjustable - voltage charging devices, the versatility of the charging circuit is improved.

[0066] In one embodiment, as Figure 4 shown, the circuit board 20 further includes a control circuit 22. The control circuit 22 is coupled to the control terminals of the first switch unit, the control terminals of the second switch unit, and the control terminals of the third switch unit.

[0067] In this embodiment, since the charging voltages required by the battery during the charging stage are different, and the working states required are different under different charging devices, the control circuit controls the first switch unit, the second switch unit, and the third switch unit to change the charging voltage and the working state. By controlling each switch unit, on the one hand, a suitable charging voltage can be provided to the battery to improve the charging speed and service life of the battery, and on the other hand, it can be applied to various types of charging devices to improve the versatility of the electronic device.

[0068] In one embodiment, as Figure 5As shown, the electronic device further includes an interface 50. The second side of the first connection portion 30 is coupled to the interface 50. The interface 50 is coupled to the charging device 40 via the second connection portion 60, and the switch circuit 21 and the first parasitic inductance Lp1 and the second parasitic inductance Lp2 in the second connection portion 60 form a charging circuit.

[0069] In this embodiment, when the electronic device is coupled to the charging device, the interface in the electronic device and the external second connection part need to be used to couple the second side of the first connection part to the interface. Since the second connection part includes a second parasitic inductance, after the second connection part is connected to the interface and the charging device, the switch circuit, the first parasitic inductance and the second parasitic inductance constitute a charging circuit. Since the first parasitic inductance and the second parasitic inductance are coupled in series, the inductance in the charging circuit is increased to enhance the filtering capability of the charging circuit, thereby improving the reliability of the charging circuit.

[0070] In one embodiment, the voltage output by the charging device 40 is adjustable.

[0071] In this embodiment, since the voltage output by the charging device is adjustable, the charging circuit only needs to work in the third state to achieve fast and stable charging of the battery, thereby reducing the power consumption of the charging circuit and improving the versatility of the charging circuit.

[0072] In one embodiment, the voltage output by the charging device 40 is fixed.

[0073] In this embodiment, since the voltage output by the charging device is fixed, the charging circuit can step down the voltage output by the charging device to charge the battery when operating in the first state and the second state, thereby improving the versatility of the charging circuit.

[0074] For example, when the voltage output by the charging device 40 is adjustable, the first state and the second state of the charging circuit can be switched according to the voltage and charging strategy of the battery 10 to adjust the charging voltage. When the voltage output by the charging device 40 is fixed, the control circuit 22 communicates with the charging device 40 through the interface 50, and the control circuit 22 transmits data to the charging device 40 according to the voltage and charging strategy of the battery 10 to adjust the voltage output by the charging device 40.

[0075] In one embodiment, the circuit board 20 includes a main board.

[0076] In this embodiment, since the mainboard is a necessary circuit board in every electronic device, there is no need to add an additional circuit board, thereby reducing the complexity of the electronic device structure.

[0077] Exemplarily, the control circuit 22 may be a control circuit 22 in a mainboard, or may be a separate control circuit 22 .

[0078] In one embodiment, the first connecting portion 30 includes a flexible printed circuit board.

[0079] In this embodiment, since the flexible circuit board is light in weight and thin in thickness, the circuit board and the interface are connected through the flexible circuit board, which can reduce the volume of the electronic device and improve the reliability of the electronic device.

[0080] In one embodiment, the second connection portion 60 includes a data line.

[0081] In this embodiment, the charging device and the electronic device are connected via the data line, so that the charging device can reliably charge the electronic device and improve the versatility of the charging circuit. At the same time, by using the second parasitic inductance in the data line for filtering, the inductance in the charging circuit is increased to enhance the filtering capability of the charging circuit, thereby improving the reliability of the charging circuit.

[0082] In one embodiment, the interface 50 includes a Type-C interface.

[0083] In this embodiment, since the Type-C interface is a common interface in electronic devices and can transmit data and quickly charge, by using the Type-C interface as an interface, fast charging of the battery can be achieved and different types of charging devices can be applicable, thereby improving the versatility of the electronic device.

[0084] An exemplary embodiment of the present disclosure provides an electronic device, including a battery 10, a mainboard, a flexible circuit board and an interface 50. The mainboard includes a first transistor T1, a second transistor T2, a third transistor T3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first diode D1, a second diode D2 and a third diode D3. The data line includes two equivalent second parasitic inductors Lp2, one end of the two second parasitic inductors Lp2 is respectively coupled to the two ends of the charging device 40, and the other end of the two second parasitic inductors Lp2 is respectively coupled to the first end and the second end of the interface 50. The flexible circuit board includes two equivalent first parasitic inductors Lp1, one end of one first parasitic inductor Lp1 is coupled to the first end of the interface 50, and the other end is coupled to the drain of the first transistor T1 and the first end of the first capacitor C1. One end of the other first parasitic inductor Lp1 is coupled to the second end of the interface 50, and the other end is coupled to the source of the second transistor T2, the second end of the second capacitor C2 and the negative electrode of the battery 10. The source of the first transistor T1 is coupled to the positive electrode of the battery 10, the source of the third transistor T3, and the first end of the second capacitor C2. The drain of the second transistor T2 is coupled to the drain of the third transistor T3 and the second end of the first capacitor C1. The anode of the first diode D1 is coupled to the source of the first transistor T1, and the cathode of the first diode D1 is coupled to the drain of the first transistor T1. The anode of the second diode D2 is coupled to the source of the second transistor T2, and the cathode of the second diode D2 is coupled to the drain of the second transistor T2. The anode of the third diode D3 is coupled to the source of the third transistor T3, and the cathode of the third diode D3 is coupled to the drain of the third transistor T3. The third capacitor C3 is coupled in parallel with the first diode D1, the fourth capacitor C4 is coupled in parallel with the second diode D2, and the fifth capacitor C5 is coupled in parallel with the third diode D3.

[0085] Exemplarily, the working principle of the charging circuit is described. When the voltage output by the charging device 40 is fixed, the control circuit 22 controls the first transistor T1 and the second transistor T2 to be turned off, and controls the third transistor T3 to be turned on to switch the charging circuit to the first state, and the current flowing through the first parasitic inductance Lp1 and the second parasitic inductance Lp2 continues to decrease, and the first parasitic inductance Lp1 and the second parasitic inductance Lp2 discharge to charge the first capacitor C1 and the second capacitor C2 at the same time. After the first state lasts for a first preset time, the control circuit 22 controls the first transistor T1 and the second transistor T2 to be turned on, and controls the third transistor T3 to be turned off to switch the charging circuit to the second state, and the current flowing through the first parasitic inductance Lp1 and the second parasitic inductance Lp2 continues to rise, and the first parasitic inductance Lp1 and the second parasitic inductance Lp2 are charged to charge the first capacitor C1 and the second capacitor C2 at the same time. After the first state lasts for a second preset time, the control circuit 22 switches the charging circuit to the first state. Among them, the first preset time and the second preset time determine the voltage output by the charging circuit. When the voltage output by the charging device 40 is adjustable, the control circuit 22 transmits data to the charging device 40 through the interface 50 and the second connection portion 60 according to the voltage of the battery 10 and the charging strategy to adjust the voltage output by the charging device 40 .

[0086] In an exemplary embodiment, a charging system is provided, the charging system comprising a charging device, a data line and the electronic device as described above, wherein the electronic device and the charging device are connected via the data line. The first connecting portion 30 comprises a flexible circuit board. The switch circuit 21, the first parasitic inductance Lp1 in the flexible circuit board, and the second parasitic inductance Lp2 in the data line constitute a charging circuit.

[0087] In this embodiment, the charging circuit is formed by the switch circuit, the first parasitic inductor in the flexible circuit board, and the second parasitic inductor in the data line, and no additional inductor is required in the charging circuit, thereby reducing the volume of the charging circuit. At the same time, since no additional inductor is required in the charging circuit, the cost of the charging circuit is reduced, thereby reducing the cost of the charging system.

[0088] In an exemplary embodiment, a charging module is provided, the charging module comprising a circuit board and a first connection portion. The circuit board comprises a switch circuit, a first side of the switch circuit is used to couple with a battery, a second side of the switch circuit is coupled with a first side of the first connection portion, and the second side of the first connection portion is used to couple with a charging device. The switch circuit and the first parasitic inductance in the first connection portion constitute a charging circuit, and the charging circuit is used to charge the battery.

[0089] In this embodiment, the charging circuit is formed by the switch circuit and the first parasitic inductor, and no additional inductor is required in the charging circuit, thereby reducing the volume of the charging circuit. At the same time, since no additional inductor is required in the charging circuit, the cost of the charging circuit is reduced, thereby reducing the cost of the charging module. When the charging module is used in an electronic device, since no additional inductor is required in the charging circuit of the charging module, the volume of the charging circuit is reduced. At the same time, since no additional inductor is required in the charging circuit of the charging module, the cost of the charging circuit is reduced, thereby reducing the cost of the electronic device.

[0090] Exemplarily, the circuit board and the first connection part of the charging module can be the same as the circuit board 20 and the first connection part 30 of the electronic device, which are not described here. The charging module can charge the battery through the charging circuit composed of its own switching circuit and the first parasitic inductance in the first connection part.

[0091] In an exemplary embodiment, an electronic device is provided, and the electronic device is, for example, a mobile phone, a laptop computer, a tablet computer, and a wearable device.

[0092] refer to Figure 6 As shown, electronic device 400 may include one or more of the following components: a processing component 402 , a memory 404 , a power component 406 , a multimedia component 408 , an audio component 410 , an input / output (I / O) interface 412 , a sensor component 414 , and a communication component 416 .

[0093] The processing component 402 generally controls the overall operation of the electronic device 400, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 402 may include one or more modules to facilitate the interaction between the processing component 402 and other components. For example, the processing component 402 may include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.

[0094] The memory 404 is configured to store various types of data to support operations on the electronic device 400. Examples of such data include instructions for any application or method operating on the electronic device 400, contact data, phone book data, messages, pictures, videos, etc. The memory 404 can be implemented by any type of volatile or non-volatile storage terminal or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0095] The power supply component 406 provides power to the various components of the electronic device 400. The power supply component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 400.

[0096] The multimedia component 408 includes a screen that provides an output interface between the electronic device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front camera module and / or a rear camera module. When the electronic device 400 is in an operating mode, such as a shooting mode or a video mode, the front camera module and / or the rear camera module may receive external multimedia data. Each front camera module and the rear camera module may be a fixed optical lens system or have a focal length and optical zoom capability.

[0097] The audio component 410 is configured to output and / or input audio signals. For example, the audio component 410 includes a microphone (MIC), and when the electronic device 400 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 404 or sent via the communication component 416. In some embodiments, the audio component 410 also includes a speaker for outputting audio signals.

[0098] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0099] The sensor assembly 414 includes one or more sensors for providing various aspects of status assessment for the electronic device 400. For example, the sensor assembly 414 can detect the open / closed state of the electronic device 400, the relative positioning of components, such as the display and keypad of the electronic device 400, and the sensor assembly 414 can also detect the position change of the electronic device 400 or a component of the electronic device 400, the presence or absence of user contact with the electronic device 400, the orientation or acceleration / deceleration of the electronic device 400, and the temperature change of the electronic device 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 414 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0100] The communication component 416 is configured to facilitate wired or wireless communication between the electronic device 400 and other terminals. The electronic device 400 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0101] In an exemplary embodiment, the electronic device 400 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing terminals (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0104] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0105] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An electronic device, characterized in that: The electronic device comprises: Battery; a circuit board, the circuit board comprising a switch circuit, a first side of the switch circuit being coupled to the battery; a first connection portion, wherein a first side of the first connection portion is coupled to a second side of the switch circuit, and the second side of the first connection portion is used to couple to a charging device; The switch circuit and the first parasitic inductance in the first connecting portion form a charging circuit, and the charging circuit is used to charge the battery.

2. The electronic device according to claim 1, characterized in that: The charging circuit includes a step-down circuit; or, the charging circuit includes a step-up circuit; or, the charging circuit includes a step-up / step-down circuit.

3. The electronic device according to claim 2, characterized in that: The switch circuit comprises: a first switch unit, wherein a first end of the first switch unit is coupled to a first end of the first connecting portion, and a second end of the first switch unit is coupled to a positive electrode of the battery; a second switch unit, wherein a first end of the second switch unit is coupled to the second end of the first connecting portion and the negative electrode of the battery; a third switch unit, wherein a first end of the third switch unit is coupled to a second end of the second switch unit, and a second end of the third switch unit is coupled to a second end of the first switch unit; A first capacitor, wherein a first end of the first capacitor is coupled to a first end of the first switch unit, and a second end of the first capacitor is coupled to a second end of the second switch unit and a first end of the third switch unit; A second capacitor, wherein a first end of the second capacitor is coupled to the second end of the first switch unit and the second end of the third switch unit, and a second end of the second capacitor is coupled to the first end of the second switch unit.

4. The electronic device according to claim 3, characterized in that: The first switch unit includes a first transistor; the second switch unit includes a second transistor; and the third switch unit includes a third transistor.

5. The electronic device according to claim 3, characterized in that: In a first state of the charging circuit, the first switch unit and the second switch unit are disconnected, and the third switch unit is turned on; in a second state of the charging circuit, the first switch unit and the second switch unit are turned on, and the third switch unit is disconnected.

6. The electronic device according to claim 3, characterized in that: In the third state of the charging circuit, the first switch unit is turned on, and the second switch unit and the third switch unit are turned off.

7. The electronic device according to claim 3, characterized in that: The circuit board also includes: A control circuit is coupled to a control end of the first switch unit, a control end of the second switch unit, and a control end of the third switch unit.

8. The electronic device according to claim 1, characterized in that: The voltage output by the charging device is adjustable; or, the voltage output by the charging device is fixed.

9. The electronic device according to any one of claims 1 to 8, characterized in that: The electronic device further comprises an interface; the second side of the first connecting portion is coupled to the interface; The interface is coupled to the charging device via a second connecting portion, and the switching circuit, the first parasitic inductance, and the second parasitic inductance in the second connecting portion constitute the charging circuit.

10. The electronic device according to claim 9, characterized in that: The circuit board includes a mainboard; and / or the first connecting portion includes a flexible circuit board; and / or the second connecting portion includes a data line; and / or the interface includes a Type-C interface.

11. A charging system, characterized in that: The charging system includes a charging device, a data line and an electronic device as described in any one of claims 1 to 10, wherein the electronic device and the charging device are connected via the data line; wherein the first connecting portion includes a flexible circuit board; the switching circuit and the first parasitic inductance in the flexible circuit board and the second parasitic inductance in the data line constitute the charging circuit.

12. A charging module, characterized in that: The charging module comprises: A circuit board, the circuit board comprising a switch circuit, wherein a first side of the switch circuit is used to couple with a battery; a first connection portion, wherein a first side of the first connection portion is coupled to a second side of the switch circuit, and the second side of the first connection portion is used to couple to a charging device; The switch circuit and the first parasitic inductance in the first connecting portion form a charging circuit, and the charging circuit is used to charge the battery.

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