CN112688388A

CN112688388A - Charging device, electronic equipment and charging method

Info

Publication number: CN112688388A
Application number: CN202011511030.0A
Authority: CN
Inventors: 贾峰
Original assignee: Oppo Chongqing Intelligent Technology Co Ltd
Current assignee: Oppo Chongqing Intelligent Technology Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-04-20
Anticipated expiration: 2040-12-18
Also published as: CN112688388B

Abstract

The disclosure provides a charging device, electronic equipment and a charging method, and relates to the technical field of charging. The charging device includes: a rechargeable battery having a cell; n charging circuits, wherein N is a positive integer not less than 2; the N charging interfaces correspond to the charging circuits one by one; one end of each charging circuit is connected with the corresponding charging interface, and the other end of each charging circuit is connected with the rechargeable battery; and a charging switching piece is arranged between two adjacent charging circuits in the N charging circuits and is used for controlling the two adjacent charging circuits to carry out switching between series connection and parallel connection. The method and the device can break through the limitation of the specification of the single charging interface, improve the total charging power and rate, flexibly switch the series-parallel connection relation of the charging circuit and improve the charging efficiency.

Description

Charging device, electronic equipment and charging method

Technical Field

The present disclosure relates to the field of charging technologies, and in particular, to a charging device, an electronic device, and a charging method.

Background

As the performance and functions of mobile terminals increase, the power consumption of the mobile terminals also increases. How to increase the charging rate of the battery is a big problem in the industry.

The charge rate of the battery is proportional to the charging power, with the greater the charging power, the higher the charge rate. Due to the limitation of the battery volume and the charging interface specification such as USB (Universal Serial Bus), and the influence of safety, the current charging power can reach about 50W at most, and further improvement is difficult to achieve.

Disclosure of Invention

The present disclosure provides a charging device, an electronic device and a charging method, so as to improve the charging rate of a battery at least to a certain extent.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

According to a first aspect of the present disclosure, there is provided a charging device comprising: a rechargeable battery having a cell; n charging circuits, wherein N is a positive integer not less than 2; the N charging interfaces correspond to the charging circuits one by one; one end of each charging circuit is connected with the corresponding charging interface, and the other end of each charging circuit is connected with the rechargeable battery; and a charging switching piece is arranged between two adjacent charging circuits in the N charging circuits and is used for controlling the two adjacent charging circuits to carry out switching between series connection and parallel connection.

According to a second aspect of the present disclosure, there is provided an electronic device comprising: a housing; the charging device of the first aspect; the charging interface of the charging device is positioned on the shell, and the other parts of the charging device are positioned in the shell.

According to a third aspect of the present disclosure, there is provided a charging method for controlling the charging device of the first aspect to charge a rechargeable battery; the method comprises the following steps: determining a charging interface which is connected with a power supply in N charging interfaces of the charging device; and controlling a charging circuit corresponding to the charging interface which is connected with the power supply to charge the rechargeable battery.

According to a fourth aspect of the present disclosure, there is provided an electronic device comprising: a processor; a memory for storing executable instructions of the processor; the charging device of the first aspect; wherein the processor is configured to: determining a charging interface which is connected with a power supply in N charging interfaces of the charging device; and controlling a charging circuit corresponding to the charging interface which is connected with the power supply to charge the rechargeable battery.

According to a fifth aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the charging method of the third aspect described above and possible implementations thereof.

The technical scheme of the disclosure has the following beneficial effects:

in the first aspect, the rechargeable battery can be charged by a plurality of charging circuits together, and each charging circuit is provided with a corresponding charging interface, so that the limitation of the specification of a single charging interface is broken through, and the total charging power and rate are improved. In the second aspect, only a single battery cell is arranged in the rechargeable battery, and under the limitation of the battery size, the utilization rate of the space by the single battery cell is higher than that by multiple battery cells, so that the total electric quantity of the battery is favorably improved. In the third aspect, the charging switching piece is arranged to control two adjacent charging circuits to be switched in series and in parallel, so that the charging current or the charging voltage can be flexibly adjusted, the requirements of different charging stages are met, and the charging efficiency is improved. In the fourth aspect, the charging interface or the charger is not required to be modified, and the manufacturing cost of the single-cell rechargeable battery is lower than that of the multi-cell rechargeable battery, so that the single-cell rechargeable battery has lower implementation cost and higher practicability.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 shows a schematic diagram of a charging device in the present exemplary embodiment;

fig. 2 shows a schematic diagram of a charging device provided with a charging switch in the present exemplary embodiment;

FIG. 3 shows a schematic diagram of a charging circuit in the present exemplary embodiment;

fig. 4 shows a schematic diagram of a charging device provided with a function switching member in the present exemplary embodiment;

fig. 5 is a block diagram showing an electronic apparatus in the present exemplary embodiment;

fig. 6 is a diagram showing a structure of an electronic apparatus in which a main board and small boards are provided in the present exemplary embodiment;

fig. 7 shows a structural diagram of an electronic apparatus in which a function switch is provided in the present exemplary embodiment;

fig. 8 shows a flowchart of a charging method in the present exemplary embodiment;

fig. 9 shows a sub-flowchart of a charging method in the present exemplary embodiment;

fig. 10 shows a block diagram of an electronic apparatus in the present exemplary embodiment.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

In the related art, the charging interface is modified, so that the charging rate can be improved, and the charging method specifically comprises two schemes:

one solution is to add a pin of a charging interface, such as a USB Type-C interface, which is generally 24 pins, and after adding 26 or 28 pins, the charging current can be increased. However, adding pins to the interface will cause a significant increase in production cost, and also requires additional customization of the mating charger, which is difficult to popularize among users.

Another solution is to reinforce the charging interface, such as reinforcing part of the pins, to withstand higher currents. However, this causes acceleration loss of the charging member and more serious heat generation, and in practice, the charging rate is usually reduced to protect the battery after the charging amount reaches 60%, so that the charging acceleration effect can be achieved only with a limited amount.

In view of one or more of the above problems, exemplary embodiments of the present disclosure provide a charging device. The charging device can be configured in an electronic device using a rechargeable battery, including but not limited to a smart phone, a tablet computer, a portable game machine, a wearable device, an unmanned aerial vehicle, a camera, and the like.

The charging device can comprise a charging battery, N charging circuits and N charging interfaces. N is a positive integer not less than 2. The rechargeable battery has a cell, such as a lithium ion cell, a lithium polymer cell, and the like. The charging circuits are in one-to-one correspondence with the charging interfaces, one end of each charging circuit is connected with the corresponding charging interface, and the other end of each charging circuit is connected with the charging battery. A charging switching piece is arranged between two adjacent charging circuits in the N charging circuits and used for controlling the two adjacent charging circuits to carry out series connection and parallel connection switching.

The structure of the charging device will be specifically described below with reference to fig. 1. As shown in fig. 1, the charging apparatus 100 may include one rechargeable battery 110, two charging circuits (a first charging circuit 1210 and a second charging circuit 1220), two charging interfaces (a first charging interface 1310 and a second charging interface 1320), and two charging switches (a first charging switch 1410 and a second charging switch 1420).

The rechargeable battery 110 includes a battery cell 1101, where the battery cell 1101 is a power storage portion and generally includes a positive electrode, a negative electrode, an electrolyte, a diaphragm, and the like, and fig. 1 shows the positive electrode and the negative electrode of the battery cell 1101, and the positive electrode and the negative electrode of the battery cell 1101 are the positive electrode and the negative electrode of the rechargeable battery 110.

The first charging circuit 1210 and the second charging circuit 1220 are used to charge the rechargeable battery 110, and may protect the rechargeable battery 110, for example, by being turned off when the voltage or current is too high, so as to prevent damage to the rechargeable battery 110. Taking the first charging circuit 1210 as an example, one end of the first charging circuit is connected to the first charging interface 1310, and the other end of the first charging circuit is connected to the positive electrode and the negative electrode of the cell 1101. The first charging interface 1310 may be powered on, so as to provide current to flow into the battery cell 1101 through the first charging circuit 1210, so as to implement charging. The connection of the second charging circuit 1220 is the same. When the first charging interface 1310 and the second charging interface 1320 are both powered on, the rechargeable battery 110 is charged by the first charging circuit 1210 and the second charging circuit 1220, so that the charging rate is greatly improved.

In an alternative embodiment, the first charging circuit 1210 and the second charging circuit 1220 may be respectively connected to the rechargeable battery 110, for example, the two charging circuits are respectively connected to different positions on the electrode of the battery cell 1101.

In an alternative embodiment, the first charging circuit 1210 and the second charging circuit 1220 may be combined into a single line and then connected to the rechargeable battery 110.

It should be noted that the first charging interface 1310 and the second charging interface 1320 may adopt any standard interface, and for a mobile terminal, a USB interface may be adopted, including but not limited to a USB Type-C interface, a Micro-USB interface, and the like. In an alternative embodiment, different charging interfaces may also be provided in different interface forms to accommodate different charger plugs.

The first charging switch 1410 is disposed on the negative electrode of the first charging circuit 1210, and the second charging switch 1420 is disposed on the positive electrode of the second charging circuit 1220. The first charging switch 1410 and the second charging switch 1420 may be used to control the series-parallel relationship of the first charging circuit 1210 and the second charging circuit 1220.

In an alternative embodiment, when the charging switching member is in the first switching state, the negative electrode of one of the two adjacent charging circuits is communicated with the positive electrode of the other one to form a series connection of the two adjacent charging circuits; when the charging switching piece is in the second switching state, the positive poles and the negative poles of the two adjacent charging circuits are connected to the rechargeable battery to form parallel connection of the two adjacent charging circuits.

As shown in fig. 1, when the first and second charge switches 1410 and 1420 are in the first switching state (i.e., the solid line position in fig. 1), the negative electrode of the first charging circuit 1210 communicates with the positive electrode of the second charging circuit 1220, so that the two charging circuits are formed in series. In addition, the positive electrode of the first charging circuit 1210 is connected to the positive electrode of the battery cell 1101, and the negative electrode of the second charging circuit 1220 is connected to the negative electrode of the battery cell 1101, which is equivalent to connecting the dc power supplies of the two charging circuits in series between the two electrodes of the rechargeable battery 110, thereby realizing a higher charging voltage. For example, the voltages of the first charging circuit 1210 and the second charging circuit 1220 are both U₀All currents are I₀Then the voltage obtained after series connection is 2U₀The current is still I₀. When the first charging switching piece 1410 and the second charging switching piece 1420 are in the second switching state (i.e., the dashed line position in fig. 1), the positive electrode and the negative electrode of the first charging circuit 1210 and the positive electrode and the negative electrode of the second charging circuit 1220 are both connected to the rechargeable battery 110, specifically, the positive electrodes of the two charging circuits are connected to the positive electrode of the battery cell 1101, and the negative electrodes of the two charging circuits are connected to the negative electrode of the battery cell 1101, so that the two charging circuits are connected in parallel, which is equivalent to connecting the dc power supplies in the two charging circuits in parallel between the two electrodes of the rechargeable battery 110, and thus, a higher charging current is achieved. For example, the voltages of the first charging circuit 1210 and the second charging circuit 1220 are both U₀All currents are I₀Then the current obtained after parallel connection is 2I₀Voltage is still U₀. Thereby, by switching in series-parallelThe charging current or the charging voltage can be flexibly adjusted, the requirements of different charging stages are met, and the charging efficiency is improved.

Note that, the first charge switching member 1410 and the second charge switching member 1420 shown in fig. 1 are single pole double throw switches. Other forms of charge switching member may also be employed. For example, referring to fig. 2, a charge switch 1430 is provided between the negative electrode of the first charging circuit 1210 and the positive electrode of the second charging circuit 1220, a charge switch 1440 is provided between the negative electrode of the first charging circuit 1210 and the negative electrode of the cell 1101, and a charge switch 1450 is provided between the positive electrode of the second charging circuit 1220 and the positive electrode of the cell 1101, and all of the three charge switches are single-pole single-throw switches. In fig. 2, the three charging switches are shown in solid line positions, i.e., in parallel connection between the first charging circuit 1210 and the second charging circuit 1220, and in broken line positions, i.e., in series connection between the first charging circuit 1210 and the second charging circuit 1220. In addition to the switching between series connection and parallel connection, all three charging switches may be turned off to disconnect the first charging circuit 1210 and the second charging circuit 1220 from the rechargeable battery 110, thereby controlling the number of charging circuits actually operated as the charging switches. Alternatively, a charge switching device in the form of a double-pole double-throw switch or a double-pole multi-throw switch may be provided between the first charging circuit 1210 and the second charging circuit 1220, whereby the number of charge switching devices can be reduced.

In the charging device according to the exemplary embodiment, in the first aspect, the rechargeable battery can be charged by a plurality of charging circuits together, and each charging circuit is configured with a corresponding charging interface, so that the limitation of the specification of a single charging interface is broken through, and the total charging power and rate are improved. In the second aspect, only a single battery cell is arranged in the rechargeable battery, and under the limitation of the battery size, the utilization rate of the space by the single battery cell is higher than that by multiple battery cells, so that the total electric quantity of the battery is favorably improved. In the third aspect, the charging switching piece is arranged to control two adjacent charging circuits to be switched in series and in parallel, so that the charging current or the charging voltage can be flexibly adjusted, the requirements of different charging stages are met, and the charging efficiency is improved. In the fourth aspect, the charging interface or the charger is not required to be modified, and the manufacturing cost of the single-cell rechargeable battery is lower than that of the multi-cell rechargeable battery, so that the single-cell rechargeable battery has lower implementation cost and higher practicability.

Fig. 1 shows that two charging switches are provided between two adjacent charging circuits to perform switching between series connection and parallel connection. The N charging circuits of the charging device may be numbered according to a positional relationship or other logical relationship (e.g., a priority order of the charging circuits), and the two adjacent charging circuits refer to two adjacent charging circuits. In practical applications, two charging switches, such as the first charging switch 1410 and the second charging switch 1420 shown in fig. 1, may be disposed between every two adjacent charging circuits of the N charging circuits, so that a total of 2N-2 charging switches are disposed. The positive pole of the first charging circuit of the N charging circuits is communicated with the positive pole of the rechargeable battery, and the negative pole of the Nth charging circuit is communicated with the negative pole of the rechargeable battery. Thus, by controlling the switching state of each charging switching member, the N charging circuits can form diversified series or parallel relations. For example, N charging circuits may be connected in series to form one charging circuit and connected to the rechargeable battery, N charging circuits may be completely connected in parallel and connected to the rechargeable battery, two charging circuits may be connected in series to form one charging circuit, and N/2 charging circuits connected in series may be connected in parallel and connected to the rechargeable battery, etc. Therefore, different charging voltages or charging currents can be adjusted more flexibly, and different charging modes are realized.

In the charging process, the switching state of the charging switching piece can be adjusted according to the state of the rechargeable battery, the heating state in the charging circuit, the actual charging strategy and the like, so that different charging modes are realized, the charging efficiency is improved, and the battery performance is protected.

In an alternative embodiment, when the charging device is in the first charging mode, the N charging circuits are connected in series, for example, all the charging switches can be switched to the first switching state, and at this time, a higher charging voltage can be realized, and the first charging mode can be, for example, a constant voltage charging mode. When the charging device is in the second charging mode, the N charging circuits are connected in parallel, for example, all the charging switching pieces can be switched to the second switching state, at this time, a higher charging current can be realized, and the second charging mode may be, for example, a constant current charging mode.

The constant voltage charging mode is typically used for the first phase of the charging process and the constant current charging mode is typically used for the second phase. In the first stage, the terminal voltage of the rechargeable battery is lower, a higher charging current can be achieved by adopting a constant voltage charging mode, and the charging rate is improved in the first stage; the present exemplary embodiment can further increase the charging voltage and the charging rate by employing the charging circuits connected in series in the constant voltage charging mode. The terminal voltage of the rechargeable battery gradually rises along with the charging, and when the terminal voltage of the rechargeable battery reaches the cut-off voltage or the electric quantity reaches the threshold electric quantity, the first stage enters the second stage. In the second stage, the terminal voltage of the rechargeable battery is higher, the charging current is lower in the constant voltage charging mode, and the constant current charging mode is required. A higher charging voltage can be achieved by adopting a constant current charging mode, and the charging rate is improved in the second stage; the present exemplary embodiment can further improve the charging current and the charging rate by employing the charging circuits connected in parallel in the constant current charging mode.

In an optional implementation manner, a segmented constant current charging manner can be further adopted to charge the rechargeable battery, and different charging switching pieces can be correspondingly controlled at different stages to control the series-parallel connection relationship of the N charging circuits, so that the requirements of constant current charging at different stages are met. For example, at the beginning of charging, all the charging switching pieces are set in the second switching state, so that all the charging circuits are connected in parallel to realize high charging current; when entering the next constant current charging stage, a part of the charging switching pieces can be switched to a first switching state, so that a part of the charging circuits are changed into series connection and then are connected in parallel with other charging circuits, thereby reducing the charging current and improving the charging voltage; with the gradual rise of the terminal voltage of the rechargeable battery, more charging switching pieces are continuously switched to a first switching state, more charging circuits are changed into series connection, and therefore the charging current is gradually reduced to correspond to different constant current charging stages, the charging voltage is gradually increased, each constant current charging stage can achieve a higher charging rate, and the total charging time is shortened.

In an alternative embodiment, each charging circuit may include a charge pump for regulating the current and voltage of the charging circuit. Referring to fig. 3, taking the first charging circuit 1210 as an example, the first charging circuit 1210 may be provided with a charge pump 1211, and after the current flows through the charge pump 1211, the voltage may be reduced and the current may be increased, for example, the current obtained by the first charging circuit 1210 from the first charging interface 1310 is 10V/4A, and after entering the charge pump 1211, the current is converted into a current of 5V/8A, and finally flows into the rechargeable battery 110. The first charging circuit 1210 and the second charging circuit 1220 both provide 5V/8A of current, thereby forming 80W of charging power and greatly improving the charging rate.

The charge pump can reduce voltage in the charging process, reduce power loss and improve charging conversion efficiency; the external inflow standardized current can be adjusted according to actual requirements so as to adapt to different types of batteries or charging modes.

Generally, the charge pump generates a high amount of heat during the charging process. In the related art, a plurality of charge pumps are generally connected in parallel in one charging circuit, and the charge pumps are concentrated, so that local heat generation is serious. In contrast, the charge pumps in the exemplary embodiment are located in different charging circuits, and therefore, the charge pumps can be distributed, which is beneficial to improving the heat dissipation effect and reducing local heat generation.

In an alternative embodiment, the charge switching element may be disposed at the back end of the charge pump, i.e., in the connection line between the charge pump and the rechargeable battery, so as to implement the switching between series connection and parallel connection of the charge pumps of the plurality of charging circuits, i.e., the switching between series connection and parallel connection of the dc power supplies of the plurality of charging circuits.

In an optional implementation, the charging device may further include N flexible circuit boards, which correspond to the charging circuits one to one. Each charging circuit is connected to the rechargeable battery through a corresponding flexible circuit board. For example, a circuit portion at the rear end of the charge pump may be disposed on the flexible circuit board, that is, one end of the flexible circuit board is connected to the charge pump, and the other end of the flexible circuit board is connected to the rechargeable battery, for example, a protection circuit of the rechargeable battery is disposed on the flexible circuit board, and the charge pump is connected to the battery cell. Or depending on the actual configuration of the charging circuit, part or even all of the charging circuit may be arranged on the flexible circuit board, e.g. the charge pump may be arranged on the flexible circuit board. The flexible circuit board can be bent and folded freely, is suitable for being arranged according to the internal space of the charging device, is favorable for realizing the integration of the assembly and the connection of internal components of the charging device, and is favorable for reducing the size of the charging device.

In an alternative embodiment, a function switch may be provided at least one charging interface of the charging device, for controlling the at least one charging interface to switch the connection path. For example, the function switch may be a switch that controls on/off between the charging interface and the charging circuit, or controls the charging interface to switch connection in different circuits, such as switching from connecting the charging circuit to connecting other function circuits, and so on. It should be noted that a plurality of charging interfaces may be controlled by one function switching member, and different charging interfaces may be controlled by different function switching members.

In an alternative embodiment, the number of the function switches may be N, and the function switches correspond to the charging interfaces one to one; each function switching piece is used for controlling the corresponding charging interface to switch the connection path. Referring to fig. 4, the charging device 100 includes a first function switch 1510 and a second function switch 1520. The first function switch 1510 is disposed at a connection point between the first charging interface 1310 and the first charging circuit 1210, and when the first charging interface 1310 is closed, the first charging interface 1310 is connected to the first charging circuit 1210 to form charging, and when the first charging interface 1310 is disconnected, the first charging circuit 1210 is not used. The second function switch 1520 has the same function, and controls the second charging interface 1320 and the second charging circuit 1220 to be turned on or off.

It should be noted that the function switching element has a different function from the charging switching element, and the charging switching element is used for controlling the connection state between the charging circuits, such as switching between series connection and parallel connection; and the function switching piece is used for controlling the connection state of the charging interface, such as the on-off of the charging interface and the charging circuit.

Through the setting of above-mentioned function switching piece, can realize controlling more nimble in the charging process, for example when the temperature that detects rechargeable battery is higher, can suitably break off partly charging circuit and the interface that charges and be connected, reduce the circuit quantity that actually charges to reduce charging current. In addition, the charging interface is switched to be connected with other circuits except the charging circuit, so that the charging interface can be fully utilized.

Exemplary embodiments of the present disclosure also provide an electronic device, which may be the above-mentioned smart phone, tablet, portable game machine, wearable device, unmanned aerial vehicle, camera, etc. Referring to fig. 5, the electronic device 200 may include: a housing 210 and a charging device 100. The charging interfaces 1310 and 1320 of the charging device 100 are located on the housing 210, and the other parts of the charging device 100 are located in the housing 210. The rechargeable battery 110 may be used to power the electronic device 200. Therefore, based on the quick charging of the charging device 100, the quick charging of the electronic apparatus 200 can be realized.

Each interface that charges can set up the arbitrary position on electronic equipment's casing, for example with all setting up the interface that charges on the frame down, or set up the interface that charges of difference on different frames.

In an alternative embodiment, referring to fig. 6, the charging device 100 includes a first charging circuit 1210, a second charging circuit 1220, a first charging interface 1310, and a second charging interface 1320. In the electronic device 200, the first charging interface 1310 is disposed on the upper frame of the housing 210, and the second charging interface 1320 is disposed on the lower frame.

As shown in fig. 6, the electronic device 200 may further include a motherboard 220 and a platelet 230. The main board 220 and the small board 230 are two circuit boards that are assembled with different components inside the electronic device 200. For example, one or more of a processor, a memory, a camera module, and a sensor module may be integrated on the main board 220; one or more of a speaker, a microphone, a key, and an indicator may be integrated on the platelet 230. The main board 220 and the small board 230 are distributed at different positions inside the electronic device 200, for example, the main board 220 is located at the upper portion and near the upper frame, and the small board 230 is located at the lower portion and near the lower frame. The first charging circuit 1210 is located on the motherboard 220, and the second charging circuit 1220 is located on the small board 230. The charging circuit is one of the main heating sources in the charging process, and the two charging circuits are respectively arranged on different circuit boards, so that the metal heat conduction performance of the circuit boards can be fully utilized, the improvement of the heat dissipation effect is facilitated, and the temperature control of the equipment is optimized.

In an alternative embodiment, the charging device may include N function switches, and the function switches correspond to the charging interfaces one to one. When the function switching piece is switched to the third switching state, the corresponding charging interface is connected with the charging circuit; when the function switching piece is switched to the fourth switching state, the corresponding charging interface is connected with a function module of the electronic device, such as an audio module. Therefore, the functions of the charging interfaces can be expanded, and each charging interface can be used as a socket of the functional module, so that more sufficient and effective utilization is realized.

Taking fig. 7 as an example, the charging device 100 includes a first function switch 1510 and a second function switch 1520, both of which can be switched to a third switching state or a fourth switching state. Taking the first function switch 1510 as an example, when it is switched to the third switching state (solid line position in fig. 7), the first charging interface 1310 is connected to the first charging circuit 1210 to form charging; when the mobile phone is switched to the fourth switching state (the dotted line position in fig. 7), the first charging interface 1310 is connected to the audio module 240, and at this time, the first charging interface 1310 may be used to plug in audio devices such as earphones and sound boxes. It should be noted that different function switches may be in different switching states, for example, the first function switch 1510 is in the third switching state, so that the first charging interface 1310 is used for charging, and the second function switch 1520 is in the fourth switching state, so that the second charging interface 1320 is used for inserting the earphone.

In the related art, the charging interface and the earphone interface of most of electronic devices such as smart phones are combined into one (for example, USB Type-C interface of Android device and Lightning interface of iOS device), and thus the interface is occupied when charging, and the earphone cannot be inserted. In the exemplary embodiment, a plurality of charging interfaces are arranged, and in the charging process, a user can reserve one charging interface to be connected with the earphone, so that the requirements in the aspect of audio and video are met, and music listening or video watching while charging is realized.

The first and second switching states are position switching states of the charge switching member, the third and fourth switching states are position switching states of the function switching member, and the two types of position switching states are independent of each other. In addition, more position switching states may be set for the charging switching piece, or more position switching states may be set for the function switching piece, which is not limited in this disclosure.

Exemplary embodiments of the present disclosure also provide a charging method, which may be used to control the above-described charging device. Fig. 8 shows an exemplary flow of the charging method, which may include:

step S810, determining a charging interface which is connected with a power supply in N charging interfaces of the charging device;

in step S820, the charging circuit corresponding to the charging interface that has been powered on is controlled to charge the rechargeable battery.

Wherein, the interface switching on power that charges means: the charger is inserted into the charging interface and is connected with the power supply. A current or voltage sensing element may be provided at the charging interface to detect whether the charging interface is powered on. When the charging interface is connected with a power supply, the charging circuit corresponding to the charging interface can be controlled to form a passage, so that charging is realized. Therefore, the user can selectively connect different charging interfaces to the power supply according to actual requirements, for example, when the electric quantity of the rechargeable battery is low, the user connects all the charging interfaces to the power supply to achieve the maximum charging power and speed, and when the electric quantity reaches a certain value, the user can disconnect a part of the charging interfaces.

In an optional embodiment, the charging method may further include the steps of:

and controlling a charging switching piece of the charging device to control two adjacent charging circuits in the N charging circuits to carry out series connection and parallel connection switching.

For example, the charging switching element may be controlled according to a current charging mode, for example, when the system determines that the first charging mode is adopted, the charging switching element is triggered to switch to a first switching state to form a series connection of two adjacent charging circuits, and when the system determines that the second charging mode is adopted, the charging switching element is triggered to switch to a second switching state to form a parallel connection of two adjacent charging circuits; the first charging mode may be a constant voltage charging mode and the second charging mode may be a constant current charging mode. Thus, high-efficiency intelligent charging can be realized.

In an alternative embodiment, the charging device may include N function switches, and the function switches correspond to the charging interfaces one to one. Referring to fig. 9, the charging method may further include:

step S910, when it is detected that the charging interface is powered on, the function switch corresponding to the charging interface is switched to a third switching state, so that the charging interface is connected to the corresponding charging circuit.

The third switching state of the function switch may be shown with reference to solid line positions of the first function switch 1510 and the function switch 1520 in fig. 7. When the charging interface is detected to be powered on, a signal can be sent to the function switching piece, for example, the signal can trigger the switching piece to be placed in a high-impedance state, which corresponds to a third switching state, so that the charging interface is communicated with the charging circuit to perform charging.

In an alternative embodiment, as shown in fig. 9, the charging method may further include:

step S920, when it is detected that the charging interface is not powered on, the function switch corresponding to the charging interface is switched to a fourth switching state, so that the charging interface is connected to the function module.

The fourth switching state of the function switch may be shown with reference to the dotted line positions of the first and

second function switches

1510 and 1520 in fig. 7. In the fourth switching state, the charging interface is connected with functional modules such as audio and the like, so that other functions except charging are realized.

In an alternative embodiment, the switching of the function switch may also be controlled by detecting whether the charging interface is inserted into the audio device. Specifically, when it is detected that the audio device is not inserted into the charging interface, the function switching piece corresponding to the charging interface is switched to a third switching state, so that the charging interface is connected with the charging circuit; and when the charging interface is detected to be inserted into the audio equipment, switching the function switching piece corresponding to the charging interface to a fourth switching state, so that the charging interface is connected with the audio module.

In an alternative embodiment, a switching related control instruction may also be displayed in the user interface, for example, the current connection state of each charging interface is displayed, and the user may select to connect to the charging circuit or the audio module, so as to control the third switching state or the fourth switching state to which the corresponding function switching piece is switched.

Exemplary embodiments of the present disclosure also provide another electronic device, including: the processor, the memory and the charging device. The memory is used for storing executable instructions of the processor and can also store application data. The processor is configured, upon execution of the executable instructions, to implement the charging method described above, such as performing the method steps shown in fig. 8 or fig. 9.

The configuration of the electronic device will be exemplarily described below by taking the mobile terminal 1000 in fig. 10 as an example.

As shown in fig. 10, the mobile terminal 1000 may specifically include: the mobile phone includes a processor 1010, an internal memory 1021, an external memory interface 1022, USB interfaces 1031 and 1032, a charging management Module 1040, a power management Module 1041, a rechargeable battery 1042, an antenna 1, an antenna 2, a mobile communication Module 1050, a wireless communication Module 1060, an audio Module 1070, a speaker 1071, a receiver 1072, a microphone 1073, an earphone interface 1074, a sensor Module 1080, a display 1090, a camera Module 1091, an indicator 1092, a motor 1093, a button 1094, and a SIM (Subscriber identity Module) card interface 1095.

Processor 1010 may include one or more processing units, such as: the Processor 1010 may include an AP (Application Processor), a modem Processor, a GPU (Graphics Processing Unit), an ISP (Image Signal Processor), a controller, an encoder, a decoder, a DSP (Digital Signal Processor), a baseband Processor, and/or an NPU (Neural-Network Processing Unit), etc.

In some embodiments, processor 1010 may include one or more interfaces through which connections are made to other components of mobile terminal 1000.

Internal memory 1021 may be used to store computer-executable program code, which includes instructions. Processor 1010 executes various functional applications and data processing of mobile terminal 1000 by executing instructions stored in internal memory 1021 and/or instructions stored in a memory provided in the processor.

The external memory interface 1022 may be used for connecting an external memory, such as a Micro SD card, to extend the storage capability of the mobile terminal 1000. The external memory communicates with the processor 1010 through an external memory interface 1022 to perform data storage functions, such as storing music, video, and other files.

The USB interfaces 1031 and 1032 are two interfaces conforming to the USB standard specification, and may be used to connect a charger to charge the mobile terminal 1000, or may be connected to an earphone or other electronic devices.

The charging management module 1040 is configured to receive charging input from a charger. In an optional implementation, the charging management module 1040 may control a function switch corresponding to the USB interface 1031 or the USB interface 1032 to switch the USB interface 1031 or the USB interface 1032 to connect the charging circuit or the audio module 1070. In an alternative embodiment, the charging management module 1040 may also control the charging circuit, for example, adjust the settings of the charge pump to optimize the charging voltage and current.

While the charging management module 1040 charges the rechargeable battery 1042, it may also supply power to the device through the power management module 1041; the power management module 1041 may also monitor the status of the rechargeable battery 1042.

The wireless communication function of the mobile terminal 1000 may be implemented by the antenna 1, the antenna 2, the mobile communication module 1050, the wireless communication module 1060, a modem processor, a baseband processor, and the like. The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. The mobile communication module 1050 may provide a solution including 2G/3G/4G/5G wireless communication, etc. applied to the mobile terminal 1000. The Wireless Communication module 1060 may provide Wireless Communication solutions including WLAN (Wireless Local Area Networks, WLAN) (e.g., Wi-Fi (Wireless Fidelity, Wireless Fidelity)) Bluetooth (BT), GNSS (Global Navigation Satellite System), FM (Frequency Modulation), NFC (Near Field Communication ), IR (Infrared), and the like, which are applied to the mobile terminal 1000.

The mobile terminal 1000 may implement a display function and display a user interface through the GPU, the display screen 1090, the AP, and the like.

The mobile terminal 1000 may implement a photographing function through the ISP, the camera module 1091, the encoder, the decoder, the GPU, the display 1090, the AP, and the like, and may implement an audio function through the audio module 1070, the speaker 1071, the receiver 1072, the microphone 1073, the headphone interface 1074, the AP, and the like.

The sensor module 1080 may include a depth sensor 1081, a pressure sensor 1082, a gyroscope sensor 1083, a barometric pressure sensor 1084, etc. to implement different sensing functions.

The indicator 1092 may be an indicator light that may be used to indicate a charging status, a change in charge level, or a message, missed call, notification, etc. The motor 1093 may generate vibration cues, may also be used for touch vibration feedback, and the like. Keys 1094 include a power on key, volume key, etc.

The mobile terminal 1000 may support one or more SIM card interfaces 1095 for connecting a SIM card to implement functions such as communication and data communication.

Exemplary embodiments of the present disclosure also provide a computer-readable storage medium, which may be implemented in the form of a program product, comprising program code for causing a processor of an electronic device to perform the above-mentioned charging method, such as performing the method steps shown in fig. 8 or fig. 9, when the program product is run on the electronic device. A readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements 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 to be limited only by the following claims.

Claims

1. A charging device, comprising:

a rechargeable battery having a cell;

n charging circuits, wherein N is a positive integer not less than 2; and

the N charging interfaces correspond to the charging circuits one by one;

one end of each charging circuit is connected with the corresponding charging interface, and the other end of each charging circuit is connected with the rechargeable battery;

and a charging switching piece is arranged between two adjacent charging circuits in the N charging circuits and is used for controlling the two adjacent charging circuits to carry out switching between series connection and parallel connection.

2. The charging device of claim 1, wherein each of said charging circuits includes a charge pump for regulating the current and voltage of said charging circuit.

3. The charging device of claim 1, further comprising N flexible circuit boards, the flexible circuit boards corresponding to the charging circuits one to one;

wherein each of the charging circuits is connected to the rechargeable battery through the corresponding flexible circuit board.

4. The charging device according to claim 1, wherein at least one charging interface is provided with a function switching member for controlling the at least one charging interface to switch the connection path.

5. The charging device according to claim 4, wherein the number of the function switches is N, and the function switches are in one-to-one correspondence with the charging interfaces; each switching piece is used for controlling the corresponding charging interface to switch the connection path.

6. The charging device according to claim 1, wherein when the charging switching member is in a first switching state, a negative electrode of one of the adjacent two charging circuits communicates with a positive electrode of the other to form a series connection of the adjacent two charging circuits;

when the charging switching piece is in a second switching state, the positive electrodes and the negative electrodes of the two adjacent charging circuits are connected to the rechargeable battery to form parallel connection of the two adjacent charging circuits.

7. The charging device according to claim 1, wherein the number of the charging switches is 2N "2, and two charging switches are provided between every two adjacent charging circuits.

8. The charging device of claim 1, wherein the N charging circuits are connected in series when the charging device is in a first charging mode;

when the charging device is in a second charging mode, the N charging circuits are connected in parallel.

9. The charging device of claim 8, wherein the first charging mode comprises a constant voltage charging mode and the second charging mode comprises a constant current charging mode.

10. A charging arrangement as claimed in any of claims 1 to 9, in which the charging interface comprises a universal serial bus port.

11. An electronic device, comprising:

a housing;

a charging device as claimed in any one of claims 1 to 10;

the charging interface of the charging device is positioned on the shell, and the other parts of the charging device are positioned in the shell.

12. The electronic device of claim 11, wherein the charging device comprises two charging circuits and two charging interfaces.

13. The electronic device of claim 12, further comprising:

a main board and a small board;

wherein one of the two charging circuits is located on the motherboard and the other is located on the platelet.

14. The electronic device according to claim 11, wherein the charging apparatus includes N function switches, N being a positive integer not less than 2; the function switching pieces correspond to the charging interfaces one by one;

when the function switching piece is in a third switching state, the corresponding charging interface is connected with a charging circuit;

and when the function switching piece is in a fourth switching state, the corresponding charging interface is connected with the function module of the electronic equipment.

15. The electronic device of claim 14, wherein the functional module comprises an audio module.

16. A charging method for controlling the charging device according to any one of claims 1 to 10 to charge a rechargeable battery; the method comprises the following steps:

determining a charging interface which is connected with a power supply in N charging interfaces of the charging device;

and controlling a charging circuit corresponding to the charging interface which is connected with the power supply to charge the rechargeable battery.

17. The method of claim 16, further comprising:

18. The method according to claim 17, wherein the charging device includes N function switches, N being a positive integer not less than 2; the switching pieces correspond to the charging interfaces one to one;

the method further comprises the following steps:

and when the charging interface is detected to be switched on, the function switching piece corresponding to the charging interface is switched to a third switching state, so that the charging interface is connected with the corresponding charging circuit.

19. The method of claim 18, further comprising:

and when detecting that the charging interface is not connected with the power supply, switching the function switching piece corresponding to the charging interface to a fourth switching state to enable the charging interface to be connected with the functional module.

20. An electronic device, comprising:

a processor;

a memory for storing executable instructions of the processor;

a charging device as claimed in any one of claims 1 to 10;

wherein the processor is configured to: