Terminal device

Abstract

The embodiment of the invention discloses terminal equipment, the terminal equipment comprises at least two batteries, at least two charging circuits and a power supply circuit, the at least two batteries and the at least two charging circuits are in one-to-one correspondence, and each charging circuit is used for charging the corresponding battery under the condition that the charging circuit is connected with the power supply equipment; and the power supply circuit is used for supplying power to other modules of the terminal equipment by using at least one of the at least two batteries. According to the technical scheme, the terminal equipment comprises at least two charging circuits and at least two batteries in one-to-one correspondence with the charging circuits, each charging circuit can charge the corresponding battery at the same time, the charging efficiency of the terminal equipment is improved, each charging circuit can independently and freely adjust the charging current, and the charging efficiency of the terminal equipment is improved. The problems of charging duration difference and capacity difference of batteries with different sizes do not need to be considered, and the flexibility is greatly improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of terminal technology, and relate to but are not limited to a terminal device. Background Art

[0002] With the development of terminal technology, in order to increase the service life of terminal devices, the number of batteries in terminal devices is also increasing. Taking an existing foldable terminal device as an example, assuming that the foldable terminal device includes two folding parts, each folding part includes a middle frame, and the two folding parts can be connected by a rotating shaft. Generally, there are two batteries of different sizes in the two folding parts.

[0003] In the current related technology, the charging solution for the foldable terminal device is to use only one charger plugged into the only universal serial bus (USB) port of the foldable terminal device to charge two batteries at the same time.

[0004] However, in the charging scheme of the above-mentioned foldable terminal device, the battery charging efficiency is not high, and the charging speeds of batteries of different sizes vary greatly. Therefore, how to improve the charging efficiency of multi-battery terminal devices is an urgent problem to be solved. Summary of the invention

[0005] In view of this, an embodiment of the present application provides a terminal device that can improve the charging efficiency of a multi-battery terminal device. The terminal device provided in the embodiment of the present application is implemented as follows:

[0006] An embodiment of the present application provides a terminal device, which includes at least two batteries, at least two charging circuits and a power supply circuit, and the at least two batteries correspond one-to-one to the at least two charging circuits, wherein: each charging circuit is used to charge the corresponding battery when connected to a power supply device; and the power supply circuit is used to use at least one of the at least two batteries to power other modules of the terminal device.

[0007] In some embodiments, each charging circuit includes an overvoltage protection circuit OVP and a charge pump CP, and the OVP and the CP are connected in series with the corresponding battery, wherein: the OVP is used to receive the charging signal of the power supply device and disconnect the charging circuit when the voltage of the charging signal exceeds a preset voltage threshold to protect the corresponding battery; the CP is used to output a charging voltage to the corresponding battery after performing DC conversion on the charging signal.

[0008] In some embodiments, the power supply circuit includes at least two power supply branches, and the at least two power supply branches correspond one-to-one to the at least two batteries. At least one of the at least two batteries supplies power to other modules of the terminal device through the corresponding power supply branch.

[0009] In some embodiments, the terminal device includes a controller, and each power supply branch includes an on-off control component. The on-off control component is controlled by the controller to be in an on state or an off state, so that at least one of the at least two batteries can power other modules of the terminal device through the corresponding power supply branch.

[0010] In some embodiments, each charging circuit includes a target connection point, and each power supply branch includes a path between a corresponding battery and the target connection point and a path between the target connection point and other modules of the terminal device.

[0011] In some embodiments, at least two target connection points corresponding to the at least two charging circuits are in a connected state, so that the at least two power supply branches share a path between the target connection point and other modules of the terminal device.

[0012] In some embodiments, the terminal device includes a controller, each power supply branch includes at least one on-off control, and each on-off control is located on the path between adjacent target connection points; the controller controls each on-off control included in the corresponding power supply branch to be in an on state, so that at least one of the at least two batteries supplies power to other modules of the terminal device through the corresponding power supply branch; and the controller controls all of the at least one on-off control included in each power supply branch to be in an off state, so that each of the at least two charging circuits charges the corresponding battery.

[0013] In some embodiments, the terminal device further includes at least two serial bus standard USB interfaces, and the at least two USB interfaces correspond one-to-one to the at least two charging circuits.

[0014] In some embodiments, the terminal device includes at least two middle frames, each of which is provided with at least one USB interface.

[0015] In some embodiments, the on-off control component includes at least one of a metal oxide semiconductor field effect MOS tube and a switch.

[0016] The terminal device provided in the embodiment of the present application includes at least two charging circuits and at least two batteries corresponding to each of the two charging circuits. Each charging circuit can charge the corresponding battery at the same time, thereby improving the charging efficiency of the terminal device. Each charging circuit can independently and freely adjust the charging current without considering the differences in charging time and capacity of batteries of different sizes. The flexibility is also greatly improved, and the technical problems raised in the background technology can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solution of the present application.

[0018] Figure 1 A schematic diagram of the structure of a terminal device provided in one embodiment of the present application;

[0019] Figure 2 A schematic diagram of a charging circuit according to an embodiment of the present application;

[0020] Figure 3 A schematic diagram of a charging circuit provided in another embodiment of the present application;

[0021] Figure 4 A schematic diagram of the structure of a power supply circuit provided in one embodiment of the present application;

[0022] Figure 5 A schematic diagram of the structure of a terminal device provided in one embodiment of the present application;

[0023] Figure 6 A schematic diagram of the structure of a terminal device provided in another embodiment of the present application;

[0024] Figure 7 A schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application;

[0025] Figure 8 A schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application;

[0026] Fig. 9 A schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application;

[0027] Fig.10 A schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application;

[0028] Fig.11 A schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application;

[0029] Fig.12 A schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0032] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0033] It should be pointed out that the terms "first\second\third" involved in the embodiments of the present application are used to distinguish similar or different objects, and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0034] With the development of terminal technology, in order to increase the service life of terminal devices, the number of batteries in terminal devices is also increasing. For example, existing terminal devices have evolved from including only one battery to including multiple batteries, and the size of each battery can also be flexibly set.

[0035] Taking an existing foldable terminal device as an example, assuming that the foldable terminal device includes two foldable parts, each foldable part includes a middle frame, and the two foldable parts can be connected by a rotating shaft. Generally, the battery sizes in the two foldable parts are often different. For example, the battery capacity in one foldable part is large, and the battery capacity in the other foldable part is small. For example, the structural diagram of the terminal device is as follows Figure 1 As shown, the terminal device includes a first folding part 101, a second folding part 102 and a hinge 103, the first folding part 101 and the second folding part 102 are connected by the hinge 103, the first folding part 101 includes a first battery 1011, and the second folding part 102 includes a second battery 1021.

[0036] In the current related technology, the charging solution for foldable terminal devices is to use only one charger plugged into the only USB port of the foldable terminal device to charge two batteries at the same time. Figure 1 Based on the embodiment shown in FIG. 1 , the charging schematic diagram is as follows: Figure 2 As shown in the charging circuit, assuming that the USB interface 104 used for charging is set on the middle frame of the first folding part 101, the folding terminal device charges the first battery 1011 and the second battery 1021 simultaneously along the charging circuit through the USB interface 104.

[0037] Further, as an example, in the above Figure 2 Based on the examples shown, please refer to Figure 3 ,like Figure 3 As shown, assuming that the charging circuit includes an over voltage protection circuit (over voltage protection, OVP) 301, a charge pump (charge pump, CP) 302 and a current limiting metal-oxide-semiconductor field-effect transistor (metal-oxide-semiconductor field-effect transistor, MOS) tube 303, wherein OVP 301, CP 302 and the second battery 1021 are connected in series, and OVP301, CP 302 and the current limiting MOS tube 303 and the first battery 1011 are connected in series, then the foldable terminal device can use a charger to plug into the USB interface 104 of the foldable terminal device, and charge the second battery 1021 through OVP 301 and CP 302 in sequence, and charge the first battery 1011 through OVP 301, CP 302 and the current limiting MOS tube 303.

[0038] It should be understood that OVP is a circuit that limits the output current when the input voltage exceeds a certain value to protect the integrated circuit (IC) from damage, that is, overvoltage protection IC, to prevent abnormal conditions from causing excessive voltage to burn the battery, and to shut down the charging path when the voltage abnormality reaches the set threshold. CP is a DC to DC converter, for example, it can convert the high-voltage and low-current (such as 10V 5A) at the charger end into the low-voltage and high-current (such as 4V 12.5A) at the battery end, because the operating voltage of the battery is generally between 3.6V-4.4V. In addition, CP also has conversion efficiency, that is, the total power output at the back end is slightly lower than the total power input at the front end. The CP conversion efficiency is generally above 90%, and the lost power is dissipated in the CP and IC in the form of heat. The role of the current limiting MOS tube is: because the two batteries of the folding terminal device are often of different sizes, when they are fully connected in parallel, the small battery is fully charged first, and the large battery is not fully charged. When the small battery is fully charged first, the current limiting MOS tube will shut off this path, so that the current flows to the large battery to make the large battery fully charged. However, even when the current limiting MOS is fully turned on, there will still be a small resistance, causing part of the power to be dissipated in this device.

[0039] As another example, in the above Figure 3Based on the charging circuit shown in FIG. 1 , the power supply circuit diagram of the foldable terminal device is as follows: Figure 4 As shown, when the current limiting MOS tube 303 is closed, the first battery 1011 and the second battery 1021 are connected in parallel to supply power to the foldable terminal device at the same time.

[0040] However, the charging scheme of the foldable terminal device in the above example has the following problems: First, the charging power of the foldable terminal device is not high. Because according to the law of conservation of energy, the total power of charging two batteries must be less than the power of a single charger. For example, the charger can output 60W of power at 10V 6A, then the charging power of the two batteries combined must be less than 60W. Assuming that only 50W may reach the battery end in the end, the other power is lost in the form of heat in OVP, CP, current limiting MOS tube, and wiring line. Secondly, the charging speed of large and small batteries is very different. Since the USB port and the motherboard are often on the same side, only small batteries can be arranged on the motherboard side, resulting in a short charging path for small batteries and a long charging path for large batteries. Because the large battery needs to pass through the shaft, the charging path loss of the large battery is high, which aggravates the problem of the difference in charging speed of large and small batteries, that is, the small battery has a short path and charges quickly, while the large battery has a long path and charges slowly.

[0041] In addition, the existing charging scheme for folding terminal equipment still has the problem that the total resistance of the fast charging path does not meet the requirements. There is an upper limit requirement for the total resistance of the fast charging path, for example, it is required to be less than tens of milliohms, and the DC resistance of the charging path of a large battery is easy to be too large. This is because the flexible printed circuit (FPC) through the shaft uses a thinner FPC copper layer thickness than the conventional printed circuit board (PCB) in order to meet the demand for bending life without failure. For example, a general hard board PCB uses a copper layer with a thickness of tens of microns, and the copper thickness of the shaft FPC may be around 10 microns or even thinner. Then, the current carrying capacity of the conductor is positively correlated with the cross-sectional area of ​​the conductor. The thinner the copper layer of the shaft FPC, the greater the DC resistance, the worse the current carrying capacity, and the more difficult it is to meet the demand for high-current fast charging. Although in theory, the shaft FPC reduces the copper layer thickness, only the copper layer width needs to be widened to meet the required conductor cross-sectional area, but the width of the shaft limits the width of the shaft FPC, and the routing width is very limited. Most of the space in the middle of the folding terminal device is used by the shaft, so the copper layer width cannot be widened.

[0042] Therefore, how to improve the charging efficiency of multi-battery terminal equipment is an urgent problem to be solved.

[0043] In view of this, an embodiment of the present application provides a terminal device, which includes at least two batteries, at least two charging circuits and a power supply circuit. The at least two batteries correspond to the at least two charging circuits one-to-one, wherein: each charging circuit is used to charge the corresponding battery when connected to the power supply device; the power supply circuit is used to use at least one of the at least two batteries to power other modules of the terminal device. In the technical solution of the present application, the terminal device includes at least two charging circuits and at least two batteries corresponding to each of them. Each charging circuit can charge the corresponding battery at the same time, which improves the charging efficiency of the terminal device, and each charging circuit can independently and freely adjust the charging current without considering the difference in charging time and capacity of batteries of different sizes, and the flexibility is greatly improved.

[0044] It should be understood that the terminal device involved in the embodiments of the present application may be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a smart screen, an artificial intelligence (AI) speaker, a headset, a terminal in industrial control, a terminal in self driving, a terminal in remote medical surgery, a terminal in a smart grid, a terminal in transportation safety, a terminal in a smart city, a terminal in a smart home, a personal digital assistant (PDA), etc., and the embodiments of the present application are not limited to this.

[0045] Exemplarily, the terminal device generally includes components such as a processor, a memory, a transceiver, a display unit, an input unit, a sensor, an audio circuit, and a power module. Among them, the processor is the control center of the terminal device, which uses various interfaces and lines to connect various parts of the entire terminal device, and executes various functions of the electronic device and processes data by running or executing software programs and / or modules stored in the memory, and calling data stored in the memory, so as to monitor the electronic device as a whole. The memory can be used to store software programs and modules, and the memory mainly includes a program storage area and a data storage area. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. The transceiver can provide wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication technology (NFC), infrared technology (IR), and other wireless communication solutions applied to electronic devices. The display unit can be used to display information input by the user or information provided to the user and various menus of the electronic device. The input unit can be used to receive input digital or character information and generate key signal input related to user settings and function control of the electronic device.

[0046] In order to make the purpose and technical solution of this application clearer and more intuitive, the terminal device provided by the embodiment of this application will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0047] Please refer to Figure 5 , is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. The terminal device includes at least two batteries 501, at least two charging circuits 502 and a power supply circuit 503. Among them, the at least two batteries 501 correspond to the at least two charging circuits 502 one by one.

[0048] It should be understood that each charging circuit 502 is used to charge the corresponding battery when connected to a power supply device; the power supply circuit 503 is used to use at least one of the at least two batteries 501 to power other modules of the terminal device.

[0049] In some embodiments, at least two batteries 501 can be batteries with the same amount of power or batteries with different amounts of power; they can be batteries with the same size or batteries with different sizes; they can be batteries with the same material or batteries with different materials, etc., and this application does not specifically limit this.

[0050] In some embodiments, each of the at least two charging circuits 502 may include components such as a load, a wire, and a switch. The circuit structures of different charging circuits may be the same or different, and this application does not specifically limit this.

[0051] It should be understood that the power supply equipment refers to transmission lines, transformers, contactors, etc. of various voltage levels. The power supply equipment in the embodiment of the present application can be the mains, for example, one end of the power adapter of the terminal device is plugged into the mains, and the other end is connected to the charging circuit to charge the corresponding battery. Of course, the power supply equipment can also be a mobile power supply such as a power bank, for example, the mobile power supply is connected to the charging circuit of the terminal device through a connecting line to charge the corresponding battery.

[0052] In some embodiments, the power supply circuit 503 may include power integrated blocks, wires, filter capacitors, inductors and other devices. At least one of the at least two batteries 501 can directly power other modules of the terminal device through the power supply circuit 503, such as the screen, backlight, ringing, vibration, power amplifier, etc., which are not specifically limited in this application.

[0053] In this embodiment, the terminal device includes at least two charging circuits and at least two batteries corresponding to each of them. When each charging circuit is connected to a power supply device, it can charge the corresponding battery at the same time. Compared with the current related technology in which only one charging circuit can charge all batteries in the terminal device, this method improves the charging efficiency of the terminal device, and each charging circuit can independently and freely adjust the charging current without considering the differences in charging time and capacity of batteries of different sizes, and the flexibility is greatly improved.

[0054] In a possible implementation, each of the at least two charging circuits includes an overvoltage protection circuit OVP and a charge pump CP, and the OVP and the CP are connected in series with the corresponding battery.

[0055] For example, in the above Figure 5 Based on the structure of the terminal equipment shown, please refer to Figure 6 , is a schematic diagram of the structure of a terminal device provided in another embodiment of the present application, such as Figure 6 As shown, each charging circuit 502 includes an OVP 5021 and a CP 5022 , and each OVP 5021 and CP 5022 are connected in series with the battery 501 .

[0056] Among them, OVP is a circuit that limits the output current to protect the IC from damage when the input voltage is higher than a certain value. It is mainly used to receive charging signals from power supply equipment, such as receiving charging signals from AC power or mobile power supplies, and disconnect the charging circuit when the voltage of the charging signal exceeds the preset voltage threshold to protect the corresponding battery.

[0057] CP is a DC to DC converter, which is used to convert the charging signal into DC and then output the charging voltage to the corresponding battery. For example, it can convert the high voltage and low current (such as 10V 5A) at the adapter end into the low voltage and high current (such as 4V 12.5A) at the battery end, because the operating voltage of the battery is generally between 3.6V-4.4V. In addition, CP also has conversion efficiency, that is, the total power output at the back end is slightly lower than the total power input at the front end. The CP conversion efficiency is generally above 90%, and the lost power is dissipated in the CP and IC in the form of heat.

[0058] Understandably, each charging circuit in the terminal device can include OVP and CP. Then, when each charging circuit is connected to a power supply device, if the charging signal of the power supply device is abnormal, such as the charging signal is too large, the charging circuit can be disconnected in time to protect the battery from being damaged. At the same time, when each charging circuit is connected to a power supply device, it can charge the corresponding battery at the same time, which also improves the charging efficiency of the terminal device.

[0059] In another possible implementation, the power supply circuit of the terminal device includes at least two power supply branches, the at least two power supply branches correspond one-to-one to at least two batteries, and at least one of the at least two batteries supplies power to other modules of the terminal device through the corresponding power supply branch.

[0060] For example, in the above Figure 5 Based on the structure of the terminal equipment shown, please refer to Figure 7 , which is a schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application, such as Figure 7 As shown, the power supply circuit 503 includes at least two power supply branches 5031 , and the at least two power supply branches 5031 correspond one-to-one to the at least two batteries 501 .

[0061] It should be understood that each power supply branch 5031 may include power integrated blocks, wires, filter capacitors, inductors and other devices, which are not limited in this application. Accordingly, at least one of the at least two batteries 501 supplies power to other modules of the terminal device through the corresponding power supply branch 5031, such as the screen, backlight, ringing, vibration, power amplifier, etc., which are not limited in this application.

[0062] As an example, the power supply branch may be a wire, and each battery supplies power to other modules of the terminal device through the wire.

[0063] In this embodiment, at least one of the at least two batteries supplies power to other modules of the terminal device through the corresponding power supply branch. That is to say, each battery corresponds to a power supply branch, and can supply power to other modules in the terminal device at the same time, or partially supply power to other modules in the terminal device, which has good flexibility.

[0064] Furthermore, the terminal device includes a controller, and each power supply branch includes an on-off control component. The on-off control component is controlled by the controller to be in an on state or an off state, so that at least one of the at least two batteries can power other modules of the terminal device through the corresponding power supply branch.

[0065] It should be understood that the controller is generally a microcomputer placed between the host and the remote terminal, also known as a front-end processor, which can be used to control various on-off controllers in the terminal equipment.

[0066] For example, in the above Figure 7 Based on the structure of the terminal equipment shown, please refer to Figure 8 , which is a schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application, such as Figure 8 As shown, each power supply branch 5031 includes an on-off control component 50311.

[0067] It should be understood that during the use of the terminal device, the on-off control component 50311 can be controlled by the controller to be in an on state or an off state, so that at least one of the at least two batteries can power other modules of the terminal device through the corresponding power supply branch 5031.

[0068] Among them, the on-off control component includes at least one of a MOS tube and a switch. The MOS tube is a commonly used semiconductor device, which is widely used in various electronic devices. Its main function is to realize functions such as signal amplification and switch control in the circuit. The basic principle of the MOS tube is to control the conductive properties of the channel by changing the voltage on the metal gate, thereby realizing the control of the current in the MOS tube. The role of the MOS tube in the embodiment of the present application is: because the battery sizes of the terminal device are often different, for example, there is a large battery and a small battery. When they are fully connected in parallel, the small battery is fully charged first, and the large battery is not fully charged. When the small battery is fully charged first, the MOS tube will shut off this path, so that the current flows to the large battery to make the large battery full.

[0069] As another example, see Fig. 9, is a structural diagram of a terminal device provided by another embodiment of the present application. It is assumed that the terminal device includes a first battery 901, a second battery 902, a first charging circuit 903, a second charging circuit 904, a first on-off control component 905 and a second on-off control component 906. The first charging circuit 903, the first on-off control component 905 and the first battery 901 correspond one-to-one, and the second charging circuit 904, the second on-off control component 906 and the first battery 902 correspond one-to-one.

[0070] Among them, when the first on-off control component 905 and the second on-off control component 906 are controlled by the controller to be in the on state at the same time, the first battery 901 and the second battery 902 are connected in parallel to power other modules of the terminal device at the same time; when the first on-off control component 905 is controlled by the controller to be in the on state, and the second on-off control component 906 is in the off state, the first battery 901 powers other modules of the terminal device; when the first on-off control component 905 is controlled by the controller to be in the off state, and the second on-off control component 906 is in the on state, the second battery 902 powers other modules of the terminal device.

[0071] Understandably, each power supply branch includes an on-off control component, which is controlled by a controller to be in an on state or an off state, so that at least one of at least two batteries can power other modules of the terminal device through the corresponding power supply branch. This method can enable at least one of multiple batteries to power other modules of the terminal device, which is flexible to use.

[0072] In a possible implementation, each charging circuit includes a target connection point, and each power supply branch includes a path between the corresponding battery and the target connection point and a path between the target connection point and other modules of the terminal device. At least two target connection points corresponding to at least two charging circuits are in a connected state, so that at least two power supply branches share a path between a target connection point and other modules of the terminal device. In other words, the charging circuit and the power supply circuit in the terminal device have a part of the path shared. For details, please refer to the above Figure 7 The structural diagram of the terminal device shown in FIG.

[0073] Further, in some embodiments, the terminal device includes a controller, each power supply branch includes at least one on-off control, and each on-off control is located on the path between adjacent target connection points; the controller controls each on-off control included in the corresponding power supply branch to be in an on state, so that at least one battery among at least two batteries supplies power to other modules of the terminal device through the corresponding power supply branch; and the controller controls all on-off controls of the at least one on-off control included in each power supply branch to be in an off state, so that each charging circuit of at least two charging circuits charges the corresponding battery.

[0074] As another example, see Fig.10 , is a structural diagram of a terminal device provided by another embodiment of the present application. It is assumed that the terminal device includes a first battery 1001, a second battery 1002, a first charging circuit 1003, a second charging circuit 1004 and an on-off control component 1005, wherein the first charging circuit 1003 corresponds to the first battery 1001 one-to-one, the second charging circuit 1004 corresponds to the first battery 1002 one-to-one, and the on-off control component 1005 is located on the path between adjacent target connection points.

[0075] In other words, the controller controls the on / off control element 1005 to be in an on state, so that the first battery 1001 and the second battery 1002 can supply power to other modules of the terminal device through corresponding power supply branches. The controller controls the on / off control element 1005 to be in an off state, so that the first charging circuit 1003 can charge the first battery 1001, and the second charging circuit 1004 can charge the second battery 1002.

[0076] In this embodiment, each on-off control component is located on the path between adjacent target connection points, so that by controlling the on-off control component to be in an off or on state, at least one of the at least two batteries can supply power to other modules of the terminal device through the corresponding power supply branch, and each of the at least two charging circuits can charge the corresponding battery, etc. When each charging circuit charges the corresponding battery, the charging power can be doubled, because the power of each single adapter acts on one battery, and the charging power can be increased immediately. In addition, there is no need to consider the difference in charging time and capacity between large and small batteries. Each adapter can independently and freely adjust the charging current, and even stop charging independently after being fully charged, which greatly improves the flexibility of charging curve debugging.

[0077] In yet another possible implementation, the terminal device further includes at least two USB interfaces, and the at least two USB interfaces correspond one-to-one to the at least two charging circuits.

[0078] It should be understood that the USB interface is a serial bus standard and a technical specification for an input and output interface. It is widely used in information and communication products such as personal computers and mobile devices, and has been extended to other related fields such as photographic equipment, digital televisions (set-top boxes), and game consoles. The USB interface has a hot-swappable function and can also connect to a variety of peripherals, such as a mouse and keyboard.

[0079] In addition, there are many types of USB interfaces, such as Mini B 5Pin, Mini B 8Pin Round, MicroUSB, Type-C, etc. Among them, Mini B 5Pin is the most common interface. This interface has outstanding anti-misinsertion performance and is relatively small in size. Nowadays, this interface is widely used in card readers, MP3, digital cameras and mobile hard disks. Mini B 8Pin Round, compared with the ordinary type, this interface is to change the original D-type connector into a round connector, and a bulge is designed on one side to prevent misinsertion. It is commonly found in some cameras. The Micro-USB 2.0B port complies with the USB2.0 specification and supports a data transmission rate of 12Mbit / s. The module controls the pins according to the Microport interface, which is convenient for connecting to the main controller that supports the Microport interface. Type-C is a new USB interface form, which integrates charging, display, data transmission and other functions. The biggest feature of the Type-C interface is that it supports insertion in both directions, solving the problem of reverse insertion in actual applications; at the same time, the interface is slim, which can support lighter and thinner devices, making the design of portable devices thinner and smaller; it supports higher power transmission, up to 100 watts, and supports more high-power load devices; it supports single-port and dual-port TYPE-C, which is flexible in application; it supports two-way power transmission, both for sending and receiving power.

[0080] In some embodiments, the terminal device may use Type-C as its USB interface. Of course, multiple types of USB interfaces may also be used in the terminal device, and this application does not specifically limit this.

[0081] It should also be understood that the power supply device in the embodiments of the present application generally refers to AC power, that is, one end of the power adapter of the terminal device is plugged into the AC power, and the other end is connected to the charging circuit. Each charging circuit corresponds to a USB interface, that is, the other end of the power adapter can be connected to the USB interface of the terminal device.

[0082] For example, in the above Fig.10 Based on the structure of the terminal device shown in the figure, taking the charging circuit including OVP and CP as an example, please refer to Fig.11, is a structural diagram of a terminal device provided in another embodiment of the present application. It is assumed that the first charging circuit 1003 includes OVP 10031 and CP 10032, OVP 10031 is connected to the first USB interface 1006, and the second charging circuit 1004 includes OVP 10041 and CP 10042, and OVP 10041 is connected to the second USB interface 1007.

[0083] In some embodiments, the terminal device controls the on-off controller 1005 to be in an off state through a controller, and then two power adapters can be used at the same time, one end of one power adapter is connected to the AC power, and the other end is connected to the first USB interface 1006, and then the first battery 1001 is charged through OVP 10031 and CP 10032 in sequence; one end of the other power adapter is connected to the AC power, and the other end is connected to the second USB interface 1007, and then the second battery 1002 is charged through OVP 10041 and CP 10042 in sequence.

[0084] Alternatively, in the case of only one power adapter, the on-off controller 1005 can be controlled by the controller to be in the on state, and then one end of the power adapter is connected to the mains, and the other end is connected to the first USB interface 1006, and then the first battery 1001 is charged through OVP 10031 and CP 10032 in sequence, and the second battery 1002 is charged through OVP 10031, CP 10032 and the on-off control component 1005 in sequence; or one end of the power adapter is connected to the mains, and the other end is connected to the second USB interface 1007, and then the second battery 1002 is charged through OVP 10041 and CP 10042 in sequence, and the first battery 1001 is charged through OVP 10041, CP10042 and the on-off control component 1005 in sequence.

[0085] In some embodiments, the terminal device includes at least two middle frames, each of which is provided with at least one USB interface.

[0086] For example, in the above Figure 1 Based on the structure of the terminal equipment shown, please refer to Fig.12 , which is a schematic diagram of the structure of a terminal device provided in yet another embodiment of the present application, such as Fig.12 As shown, the first folding portion 101 of the terminal device includes a middle frame, and a first USB interface 1012 is arranged below the middle frame. The second folding portion 102 of the terminal device includes a middle frame, and a second USB interface 1022 is arranged below the middle frame.

[0087] It should be understood that each adjacent middle frame in at least two middle frames is connected by a rotating shaft. The middle frame refers to the intermediate connection area between the front panel and the back cover of the terminal device. One or more USB ports can be set in each middle frame. These USB ports can be used not only for charging but also for transmitting data.

[0088] Optionally, the type of each USB interface can be the same or different, for example, all can be TYPE-C, or one can be TYPE-C and the others can be other types, which is not limited in this application. Correspondingly, the interfaces of the corresponding power adapters can also be the same or different.

[0089] It should be noted that if a terminal device with two batteries and two USB interfaces detects that only one power adapter is inserted during the charging process, the terminal device can charge the two batteries through one charging circuit according to the charging method in the current relevant technology; if it is detected that two power adapters are inserted, the solution in the embodiment of the present application can be used to use two power adapters to charge the corresponding batteries at the same time.

[0090] In this embodiment, the terminal device includes at least two middle frames, each of which is provided with at least one USB interface. Then, each battery can be charged independently through the USB interface of its own middle frame when charging, and no longer needs to pass through the shaft. The shaft does not need to pass a large current, and the thin copper is no longer a bottleneck point for stacking. In other words, compared with the charging scheme in the current related technology, which requires charging through the shaft of the terminal device, the terminal device in the embodiment of the present application can charge the battery in each middle frame independently when charging, without passing through the shaft, and there is no need to consider the problem of excessive DC resistance during charging, and the charging speed is also improved.

[0091] To sum up, the terminal device provided in the embodiment of the present application includes at least two charging circuits and at least two batteries corresponding to each of them. Each charging circuit can charge the corresponding battery at the same time. Compared with the current related technology that the terminal device needs to pass through a rotating shaft to charge and the charging speed of batteries of different sizes varies greatly, the terminal device in the embodiment of the present application does not need to pass through a rotating shaft to charge, and each charging circuit can independently and freely adjust the charging current without considering the differences in charging time and capacity of batteries of different sizes, and the flexibility is greatly improved. In addition, each charging circuit can charge the corresponding battery at the same time, which improves the charging efficiency of the terminal device.

[0092] In some embodiments, the terminal device in the embodiments of the present application can be a foldable terminal device or a non-foldable terminal device. In the case of a foldable terminal device, the foldable terminal device can be designed with multiple USB ports on different middle frames, and multiple chargers can be used to charge multiple internal batteries separately at the same time, and there is no limit on whether the foldable terminal device is in an unfolded state or a folded state during charging. Of course, there is no limit on how many layers can be folded, for example, it can be a two-fold terminal device, a three-fold terminal device, etc.

[0093] Optionally, the terminal device in the embodiment of the present application includes at least two batteries, and the at least two batteries can be combined to display a total remaining power, or the remaining power of each battery can be displayed separately through settings. This application is not limited to this.

[0094] It should be understood that "one embodiment" or "an embodiment" or "some embodiments" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in one embodiment" or "in some embodiments" appearing throughout the specification may not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above description of each embodiment tends to emphasize the differences between the various embodiments, and the same or similar aspects can be referenced to each other. For the sake of brevity, this article will not repeat them.

[0095] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0096] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0097] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as: multiple modules or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or modules can be electrical, mechanical or other forms.

[0098] The modules described above as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules; they may be located in one place or distributed on multiple network units; some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0099] In addition, all functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may be a separate unit, or two or more modules may be integrated into one unit; the above-mentioned integrated modules may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0100] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, etc., various media that can store program codes.

[0101] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can essentially or in other words, the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling an electronic device to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0102] The features disclosed in the device embodiments provided in this application can be arbitrarily combined without conflict to obtain new device embodiments.

[0103] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A terminal device, characterized in that: The terminal device includes at least two batteries, at least two charging circuits and a power supply circuit, and the at least two batteries correspond to the at least two charging circuits one by one, wherein: Each charging circuit is used to charge a corresponding battery when connected to a power supply device; The power supply circuit is used to use at least one battery among the at least two batteries to power other modules of the terminal device.

2. The terminal device according to claim 1, characterized in that: Each charging circuit comprises an overvoltage protection circuit OVP and a charge pump CP, wherein the OVP and the CP are connected in series with the corresponding battery, wherein: The OVP is used to receive a charging signal from the power supply device and disconnect the charging circuit when the voltage of the charging signal exceeds a preset voltage threshold to protect the corresponding battery; The CP is used to output a charging voltage to the corresponding battery after performing DC conversion on the charging signal.

3. The terminal device according to claim 1 or 2, characterized in that: The power supply circuit includes at least two power supply branches, and the at least two power supply branches correspond one-to-one to the at least two batteries. At least one of the at least two batteries supplies power to other modules of the terminal device through the corresponding power supply branch.

4. The terminal device according to claim 3, characterized in that: The terminal device includes a controller, and each power supply branch includes an on-off control component. The on-off control component is controlled by the controller to be in an on state or an off state, so that at least one of the at least two batteries can power other modules of the terminal device through the corresponding power supply branch.

5. The terminal device according to claim 3, characterized in that: Each charging circuit includes a target connection point, and each power supply branch includes a path between a corresponding battery and the target connection point and a path between the target connection point and other modules of the terminal device.

6. The terminal device according to claim 5, characterized in that: At least two target connection points corresponding to the at least two charging circuits are in a connected state, so that the at least two power supply branches share a path between the target connection point and other modules of the terminal device.

7. The terminal device according to claim 6, characterized in that: The terminal device includes a controller, each power supply branch includes at least one on-off control element, and each on-off control element is located on the path between adjacent target connection points; Controlling each on / off control element included in the corresponding power supply branch to be in an on state by the controller, so that at least one of the at least two batteries supplies power to other modules of the terminal device through the corresponding power supply branch; and The controller controls all the on-off control elements of the at least one on-off control element included in each power supply branch to be in an off state, so that each charging circuit of the at least two charging circuits charges the corresponding battery.

8. The terminal device according to claim 1, characterized in that: The terminal device further comprises at least two serial bus standard USB interfaces, and the at least two USB interfaces correspond one to one with the at least two charging circuits.

9. The terminal device according to claim 8, characterized in that: The terminal device includes at least two middle frames, and each middle frame is provided with at least one USB interface.

10. The terminal device according to any one of claims 4 to 7, characterized in that: The on-off control component includes at least one of a metal oxide semiconductor field effect MOS tube and a switch.

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