A battery charging module and a terminal device

Abstract

The present disclosure relates to a battery charging module and a terminal device. The battery charging module comprises: at least two charging interfaces; at least two battery charging circuits, each of which is electrically connected with one of the charging interfaces and is configured to obtain a charging signal output by the connected charging interface; and a battery assembly electrically connected with the at least two battery charging circuits; wherein each of the battery charging circuits is configured to charge the battery assembly by using the charging signal. In the embodiment of the present disclosure, at least two charging interfaces can be connected with one battery charging circuit respectively, so that the battery assembly can be charged simultaneously, and the utilization rate of the interface and the battery charging efficiency can be effectively improved.

Description

Technical Field

[0001] This disclosure relates to the field of wired charging, and more particularly to a battery charging module and terminal device. Background Technology

[0002] As the demands of terminal devices become increasingly diverse, many terminal devices, such as tablets and gaming devices, will be equipped with two interfaces (such as a Type-C interface) to meet the needs of more scenarios. In this way, without the need to borrow external devices, one interface can be used for charging and the other interface can be used for data transmission at the same time.

[0003] However, current devices with two ports do not support charging both ports simultaneously. When both ports are connected to an external power source, only the port that is connected to the external power source first can be used for charging, and the other port will be wasted, resulting in unnecessary wear and tear at the port. Utility Model Content

[0004] To overcome the problems existing in related technologies, this disclosure provides a battery charging module and terminal device. In the embodiments of this disclosure, at least two charging interfaces can be connected to a battery charging circuit respectively, realizing simultaneous charging of the battery pack, effectively improving interface utilization and battery charging efficiency.

[0005] According to a first aspect of the present disclosure, a battery charging module is provided. The battery charging module includes:

[0006] At least two charging ports;

[0007] At least two battery charging circuits, each of which is electrically connected to one of the charging interfaces, for acquiring the charging signal output by the connected charging interface;

[0008] A battery assembly is electrically connected to the at least two battery charging circuits; wherein each of the battery charging circuits is used to charge the battery assembly via the charging signal.

[0009] In some embodiments, each of the battery charging circuits includes a first line, a second line, a switching buck converter, and a capacitor regulator:

[0010] The first line is connected between the charging interface and the battery assembly;

[0011] The second line is connected between the charging interface and the battery assembly, and is connected in parallel with the first line;

[0012] The switching step-down converter is located in the first line, and the capacitor-type voltage regulator is located in the second line.

[0013] In some embodiments, the at least two battery charging circuits include a first charging circuit and a second charging circuit; the at least two charging interfaces include a first interface and a second interface.

[0014] The first charging circuit is connected to the first interface via a third line; the second charging circuit is connected to the second interface via a fourth line.

[0015] The third line has a first node, and the fourth line has a second node;

[0016] The battery charging module also includes:

[0017] The first controlled switch is connected to the connection line between the first node and the second node;

[0018] When both the first interface and the second interface are connected to the charger, the first controlled switch is in the off state;

[0019] When the first interface is not connected to a charger or the second interface is not connected to a charger, the first controlled switch is in the ON state.

[0020] In some embodiments, the battery charging module further includes:

[0021] Two second controlled switches;

[0022] One of the second controlled switches is disposed on the third line and located between the first node and the first interface, and is used to be in a conducting state when the charger is connected to the first interface, or in a disconnected state when the charger is not connected to the first interface.

[0023] Another second controlled switch is disposed on the fourth line and located between the second node and the second interface, for being in a conducting state when the charger is connected to the second interface, or in a disconnected state when the charger is not connected to the second interface.

[0024] In some embodiments, the battery assembly comprises two components;

[0025] The first charging circuit is electrically connected to one of the battery components;

[0026] The second charging circuit is electrically connected to another of the battery components.

[0027] In some embodiments, the first charging circuit is connected to one of the battery components via a fifth line; the second charging circuit is connected to another of the battery components via a sixth line.

[0028] The fifth line has a third node, and the sixth line has a fourth node;

[0029] The battery charging module also includes:

[0030] A third controlled switch is connected to the connection line between the third node and the fourth node;

[0031] When both the first interface and the second interface are connected to the charger, the third controlled switch is in the off state;

[0032] When the charger is not connected to the first interface or the charger is not connected to the second interface, the third controlled switch is in the on state.

[0033] In some embodiments, the third controlled switch includes a transistor;

[0034] The first terminal of the transistor is connected to the third node;

[0035] The second terminal of the transistor is connected to the fourth node;

[0036] When the control voltage input to the control terminal of the transistor is different, the current flowing between the third node and the fourth node is different.

[0037] In some embodiments, the first charging circuit is electrically connected to the battery assembly via a seventh line;

[0038] The second charging circuit is electrically connected to the battery assembly via the eighth line;

[0039] The battery charging module also includes:

[0040] The first detection element is disposed on the seventh line;

[0041] The second detection element is disposed in the eighth line;

[0042] A current detector is electrically connected to the first detection element and the second detection element, respectively, and is used to detect the current on the first detection element and the current on the second detection element, respectively.

[0043] In some embodiments, both the first detection element and the second detection element are resistive elements.

[0044] According to a second aspect of the present disclosure, a terminal device is also provided. The terminal device includes:

[0045] case;

[0046] In the battery charging module mentioned in the first aspect above, the charging interface of the battery charging module is disposed on the housing, and the battery charging circuit and battery assembly of the battery charging module are both disposed inside the housing.

[0047] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0048] This disclosure provides a battery charging module including at least two charging ports and a battery charging circuit individually connected to each charging port. Each charging port can receive a charging signal from a charger and charge the battery pack through its respective battery charging circuit. Thus, at least two charging ports can simultaneously perform charging functions, significantly improving port utilization and mitigating issues such as wasted charging ports and excessive power loss at the ports. Furthermore, when at least two charging ports are simultaneously connected to different chargers and each charges the battery pack using its corresponding battery charging circuit, the charging power can be superimposed, thereby accelerating the charging speed and improving the charging efficiency of the battery pack.

[0049] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0050] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0051] Figure 1 This is a structural block diagram of a battery charging module according to an exemplary embodiment.

[0052] Figure 2 This is a schematic diagram of the circuit connection between a battery charging circuit and a battery assembly, according to an exemplary embodiment. Figure 1 .

[0053] Figure 3 This is a schematic diagram of the circuit connection between a battery charging circuit and a battery assembly, according to an exemplary embodiment. Figure 2 .

[0054] Figure 4 This is a structural block diagram of a terminal device according to an exemplary embodiment.

[0055] Figures 1 to 3 The reference numerals in the accompanying drawings are as follows:

[0056] 1. Battery charging module; 11. Charging interface; 11a. First interface; 11b. Second interface; 12. Battery charging circuit; 121. Switching step-down converter; 122. Capacitor-type voltage regulator; 12a. First charging circuit; 12b. Second charging circuit; 13. Battery assembly; 13a. First battery assembly; 13b. Second battery assembly; 14. First controlled switch; 15. Second controlled switch; 16. Third controlled switch; 17. Protocol chip; 18a. First detection element; 18b. Second detection element; 19. Current detector; 2. Charger; K1. First node; K2. Second node; K3. Third node; K4. Fourth node. Detailed Implementation

[0057] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0058] See Figure 1 , Figure 1 This is a structural block diagram of a battery charging module according to an exemplary embodiment; wherein, the battery charging module 1 includes:

[0059] At least two charging ports 11;

[0060] At least two battery charging circuits 12, each battery charging circuit 12 is electrically connected to a charging interface 11 for acquiring the charging signal output by the connected charging interface 11.

[0061] The battery assembly 13 is electrically connected to at least two battery charging circuits 12; wherein each battery charging circuit 12 is used to charge the battery assembly 13 via a charging signal.

[0062] Here, the battery charging module is installed in the terminal device; the terminal device is an electrical device with an electrical load. When the charging interface is connected to an external power source (charger / adapter), the electrical load can obtain a charging signal from the external power source; the electrical load can also obtain power from the battery components within the battery charging module when the charging interface is not connected to an external power source. In this embodiment, at least two charging interfaces are located at different positions on the casing of the terminal device, and can be connected to a charger, etc., respectively via charging cables.

[0063] For example, the charging interface in this embodiment of the disclosure may be a Universal Serial Bus (USB) interface, a Lightning interface, or a DC power interface, etc. USB interfaces include: USB Type-A interface, Micro USB interface, and USB Type-C interface, etc.

[0064] Here, when the battery charging module is installed in different terminal devices, the types of at least two charging interfaces provided can be the same or different for terminal devices of different models, manufacturers and / or usage requirements.

[0065] In some embodiments, at least two charging ports are of the same type.

[0066] For example, the battery charging module of this disclosure can be provided with two charging interfaces of the same type, which are connected to the charger through charging cables of the same type. Thus, by setting at least two charging interfaces of the same type, not only can product manufacturing efficiency be effectively improved, but it also eliminates the need to prepare multiple types of data transmission cables, achieving a more convenient charging process.

[0067] For example, this disclosure embodiment can provide two Type-C interfaces; since the Type-C interface not only supports reversible plugging and unplugging, but also enables high-speed charging, the charging performance of the battery can be effectively improved by using two Type-C interfaces.

[0068] In other embodiments, at least two charging ports are of different types.

[0069] For example, embodiments of this disclosure can provide two different types of charging interfaces. One charging interface is a Type-C interface, and the other is a Micro USB interface; therefore, when the battery charging module is connected to the charger, the two charging interfaces are connected to the charger via different types of charging cables. In this way, by providing different types of charging interfaces, embodiments of this disclosure can adapt to more charging scenarios, improving charging diversity and flexibility.

[0070] It should be noted that at least two charging ports in this embodiment can be connected to the same charger or to different chargers respectively; when there are more than two charging ports, they can be partially connected to the same charger and partially connected to different chargers.

[0071] For example, when there are two charging ports and two battery charging circuits, if the two charging ports are connected to different chargers, the two chargers will provide charging signals with different parameters. These two different charging signals will enter the two battery charging circuits from the two charging ports respectively. In this example, if both chargers are low-power chargers, the two charging powers can be superimposed, thus enabling high-power fast charging of the battery pack based on the two low-power chargers.

[0072] In this embodiment, at least two battery charging circuits have parameter adjustment functions for the charging signal; for example, each battery charging circuit is provided with a voltage conversion device to output a more suitable charging current to the battery pack by performing appropriate voltage conversion on the charging signal. Additionally, each battery charging circuit may also be provided with current / voltage protection devices, surge protection devices, or temperature detection devices, etc.

[0073] It should be noted that at least two battery charging circuits can perform similar functions during battery charging, such as voltage conversion, overvoltage protection, or temperature control. However, the parameters, connection methods, and quantities of the functional components in the at least two battery charging circuits can be the same or different. Thus, the battery charging module can enable at least two battery charging circuits to operate at different charging stages simultaneously, for example, one battery charging circuit operating in a constant voltage charging stage and the other in a constant current charging stage; naturally, it can also enable different battery charging circuits to operate in different modes, for example, one battery charging circuit operating in fast charging mode and the other in slow charging mode.

[0074] In some examples of this disclosure, each battery charging circuit has a current distribution module that can divide the charging signal input to the terminal device from the charging interface into two different paths. One path supplies power to the electrical load in the terminal device, and the other path supplies power to the battery pack after being processed by voltage conversion devices in the battery charging circuit.

[0075] It should be noted that when the charging interface proposed in this embodiment is powered on by the charger, it is used to transmit charging signals to supply power to the battery components and electrical loads; when the charging interface is connected to other terminal devices (non-power source), such as a mobile phone that does not support reverse charging, the charging interface only serves as a data transmission interface to send data to other terminal devices or receive data from other terminal devices.

[0076] This disclosure provides a battery charging module including at least two charging ports and a battery charging circuit individually connected to each charging port. Each charging port can receive a charging signal from a charger and charge a battery cell via its respective battery charging circuit. Thus, at least two charging ports can simultaneously perform charging, significantly improving port utilization and mitigating issues such as wasted charging ports and excessive power loss at the ports. Furthermore, when at least two charging ports are connected to different chargers simultaneously and charge the battery cell using their respective battery charging circuits, the charging power can be superimposed, thereby accelerating the charging speed and improving the charging efficiency of the battery cell.

[0077] In some embodiments, combined with Figure 1 As shown,

[0078] Each battery charging circuit 12 includes a first line, a second line, a switching step-down converter 121, and a capacitor-type voltage regulator 122.

[0079] The first line is connected between the charging port 11 and the battery assembly 13;

[0080] The second line is connected between the charging interface 11 and the battery assembly 13, and is connected in parallel with the first line.

[0081] Among them, the switching type step-down transformer 121 is installed in the first line, and the capacitor type voltage regulator 122 is installed in the second line.

[0082] Here, each battery charging circuit has different lines for voltage regulation, such as the first line and the second line mentioned above; these two lines are connected in parallel between the charging interface and the battery assembly, and are respectively equipped with voltage regulation modules with different performance, specifically the aforementioned switching buck converter and the aforementioned capacitor-type voltage regulator.

[0083] The switching buck converter, located in the first line, can be a buck converter (BUCK converter), a single-ended primary inductor converter (SEPIC), or a dual-inductor inverting converter (CUK converter), etc. Taking the BUCK converter as an example, the BUCK converter is located in the power management integrated circuit (PMIC) of the battery charging module, and regulates the output voltage of the first line by controlling the on and off of the internal switching elements. The capacitor-type voltage regulator, located in the second line, can be a charge pump; the charge pump uses a fast capacitor to store energy, and controls the charging and discharging of the capacitor through a transistor switching array, thereby increasing or decreasing the input voltage of the second line by a certain factor (e.g., 2 or 3 times) before outputting.

[0084] Understandably, commonly available chargers come in various types. In some examples, some chargers are fixed-voltage chargers, such as those with an output voltage of 5V or 9V, while others are chargers with flexibly adjustable output voltages, where the battery charging module can control the charger's variable output voltage via communication protocols. In other examples, some chargers are high-power chargers, capable of reaching 45W or 60W charging input, while others are low-power chargers, typically with a charging input of 22W.

[0085] For the different types of chargers mentioned above, the embodiments of this disclosure can use different lines to perform voltage regulation processing on the charging signals input by different types of chargers, thereby outputting a suitable charging current to the battery assembly after voltage regulation.

[0086] Here, the switching buck converter has high voltage regulation efficiency and can be adapted to fixed-voltage chargers, converting the fixed-voltage input to the lower voltage required by the device. Furthermore, the switching buck converter is suitable for low-power chargers because it can handle lower input voltage and current while maintaining high conversion efficiency. Thus, this embodiment also includes a protocol chip electrically connected to each charging port. Each protocol chip detects the type of charger inserted into the corresponding charging port. If it is a fixed-voltage charger and / or a low-power charger, the first line can be turned on, and the input charging signal can be regulated by the buck converter before being output to the battery assembly.

[0087] Because the charge pump effectively meets the requirements of high-power charging by halving the voltage and doubling the current, it can maintain high efficiency under high load and reduce energy loss when adapted to a high-power charger. Furthermore, since the charge pump circuit does not have inductor energy storage, there are no losses caused by inductance, no inductor freewheeling, and no turn-off losses from switching transistors, reverse recovery losses from diodes, or dead-zone losses. These characteristics allow the charge pump to be adapted to adjustable voltage chargers, flexibly adjusting the output according to the charger's output voltage and current requirements to achieve efficient energy conversion and transmission. Thus, in this embodiment, when the protocol chip detects that the charger inserted into the corresponding charging interface is an adjustable voltage charger and / or a high-power charger, it turns on the second line and uses the charge pump to regulate the input charging signal before outputting it to the battery assembly.

[0088] It should be noted that the power type has a higher priority than the input voltage type; that is, if the charger is a low-power charger with adjustable voltage, the first circuit is activated; if the charger is a high-power charger with fixed voltage, the second circuit is activated.

[0089] Here, the embodiments of this disclosure, by setting a switching buck converter and a capacitor regulator in each battery charging circuit respectively, and being compatible with different types of chargers, help to achieve more diversified battery charging.

[0090] In some embodiments, combined with Figure 1 As shown, at least two battery charging circuits 12 include a first charging circuit 12a and a second charging circuit 12b; at least two charging interfaces 11 include a first interface 11a and a second interface 11b.

[0091] The first charging circuit 12a is connected to the first interface 11a via a third line; the second charging circuit 12b is connected to the second interface 11b via a fourth line.

[0092] The third line has a first node K1, and the fourth line has a second node K2;

[0093] Battery charging module 1 also includes:

[0094] The first controlled switch 14 is connected to the connection line between the first node K1 and the second node K2;

[0095] When both the first interface 11a and the second interface 11b are connected to the charger 2, the first controlled switch 14 is in the off state.

[0096] When the charger is not connected to the first interface 11a or the charger 2 is not connected to the second interface 11b, the first controlled switch 14 is in the on state.

[0097] It should be noted that the first controlled switch includes an input terminal and a control terminal; the two input terminals of the first controlled switch are respectively connected to the first node and the second node, and the control terminal of the first controlled switch is connected to the aforementioned protocol chip; thus, the protocol chip controls the on and off states of the first controlled switch by detecting the insertion of the charger.

[0098] In this example, since the third line connects the first interface and the first charging circuit, and the fourth line connects the second interface and the second charging circuit, if the two protocol chips detect that both the first and second interfaces are connected to the charger (the chargers connected to the two charging interfaces can be the same or different), they will input control signals to the first controlled switch and control the first controlled switch to be in the off state. This prevents the first charging circuit and the second charging circuit from conducting to each other, allowing them to charge the battery pack separately. This improves the flexible management capability of charging the battery pack. Furthermore, when the first and second interfaces are connected to different chargers (e.g., one is connected to a high-power charger and the other is connected to a low-power charger), different power and / or different modes of charging can be achieved through the first and second charging circuits respectively.

[0099] Furthermore, if the first interface is connected to the charger while the second interface is not, the second interface is idle or used only for data transmission. In this case, the two protocol chips can input another control signal to the first controlled switch and control the first controlled switch to be in a conducting state. Thus, both the first and second charging circuits can be connected to the first interface via the third line, allowing charging signals to flow in both circuits and powering the battery pack. It should be noted that if the second interface is connected to the charger while the first interface is not, the first controlled switch can still be controlled to be in a conducting state. In this way, both the first and second charging circuits can be connected to the first interface via the fourth line. Therefore, in this disclosure, when only one of the two charging interfaces is connected to the charger, both battery charging circuits can operate, improving charging efficiency. Furthermore, if the charging signal current input to one charging interface is too large, the output can be shared by the two battery charging circuits, overcoming the problem of one input current exceeding the battery's rated current and achieving safer charging.

[0100] It should be noted that when only one charging port is connected to the charger and the first controlled switch is in the on state, the first charging circuit and the second charging circuit will selectively conduct the first line or the second line simultaneously, depending on the type of charger. At this time, the two battery charging circuits are in the same voltage regulation state.

[0101] It should also be noted that if neither the first nor the second interface is powered on and connected to the charger, the first controlled switch is in the off state by default.

[0102] In this embodiment of the disclosure, the first controlled switch can be a signal switch or a mechanical switch. The mechanical switch can be a single-pole double-throw switch; the signal switch can be a field-effect transistor (MOSFET) or an insulated-gate bipolar transistor (IGBT). For example, Figure 1 The first controlled switch 14 shown is an insulated gate bipolar transistor (IGBT). The IGBT is formed by combining two MOSFETs. The drain terminals of the two MOSFETs are connected together, and the source terminals of the two MOSFETs are respectively connected to the first node K1 and the second node K2. The gate terminal is connected to the protocol chip 17. The protocol chip 17 realizes the conduction and disconnection of the IGBT by the high level or low level of the control signal input to the gate terminal.

[0103] This embodiment of the present disclosure, by setting a first controlled switch, enables the battery assembly to be charged simultaneously using two battery charging circuits (the first charging circuit and the second charging circuit) even when one of the first and second interfaces is not powered on and connected to a charger, thereby improving the effectiveness and flexibility of battery charging.

[0104] In some other embodiments of this disclosure, if only one charging port is connected to the charger and the battery assembly does not require high-power charging or fast charging, the first controlled switch can be controlled to be in the off state; when the first charging circuit and the second charging circuit need to charge the battery assembly at the same time, the first controlled switch can be controlled to be in the on state. This setting improves charging flexibility.

[0105] In some embodiments, combined with Figure 1 As shown, the battery charging module 1 also includes:

[0106] Two second controlled switches 15;

[0107] Among them, a second controlled switch 15 is disposed on the third line and located between the first node K1 and the first interface 11a, and is used to be in the conducting state when the charger 2 is connected to the first interface 11a, or in the disconnected state when the charger 2 is not connected to the first interface 11a.

[0108] Another second controlled switch 15 is provided on the fourth line and located between the second node K2 and the second interface 11b. It is used to be in the on state when the charger 2 is connected to the second interface 11b, or in the off state when the charger 2 is not connected to the second interface 11b.

[0109] Here, the second controlled switch includes an input terminal and a control terminal; the two input terminals of one second controlled switch are respectively connected to the first interface and the first node, and the two input terminals of the other second controlled switch are respectively connected to the second interface and the second node; the control terminals of the two second controlled switches are respectively connected to the two protocol chips mentioned above; in this way, the protocol chips control the on and off states of the two first controlled switches respectively by detecting the insertion of the charger at the first interface and the second interface.

[0110] Since the first controlled switch can connect the first charging circuit and the second charging circuit to the same charging interface through the third line (or the fourth line), in this case, if the first interface is not powered on and connected to the charger, the second interface may experience problems such as static electricity or interface device damage due to backflow of current from the second charging circuit in the fourth line. Of course, if the second interface is not powered on and connected to the charger, but the first controlled switch is in the conducting state, the above-mentioned backflow problem will also occur at the second interface. Based on this, in this embodiment of the present disclosure, a second controlled switch is provided on the third line corresponding to the first interface and the fourth line corresponding to the second interface.

[0111] Thus, when the first interface is not connected to the charger, the second controlled switch on the third line is in the open state, thereby disconnecting the first interface from the first charging circuit, overcoming the current backflow problem, and ensuring the safe use of the first interface. When the first interface is connected to the charger, the second controlled switch is in the closed state, allowing the charging signal to flow normally into the first charging circuit, and outputting after voltage regulation using the first or second line in the first charging circuit. Similarly, when the second interface is not connected to the charger, the second controlled switch on the fourth line is in the open state, thereby disconnecting the second interface from the second charging circuit, overcoming the current backflow problem, and ensuring the safe use of the second interface. When the second interface is connected to the charger, the second controlled switch is in the closed state, allowing the charging signal to flow normally into the second charging circuit, and outputting after voltage regulation using the first or second line in the second charging circuit.

[0112] It should be noted that the second controlled switch is connected to the VBUS pin of the charging interface, but not to the data transmission pin of the charging interface. Thus, when a charging interface (the first interface or the second interface) is not connected to the charger but is connected to a non-powered device for data transmission, the open state of the second controlled switch corresponding to that charging interface does not affect the data transmission function of that charging interface.

[0113] In this embodiment of the disclosure, the second controlled switch may also be a signal switch such as a transistor, or it may be configured as a mechanical switch such as a single-pole double-throw switch. This disclosure does not limit this.

[0114] Thus, by setting two second controlled switches, the safety of using the first and second interfaces can be improved in this embodiment of the disclosure.

[0115] In some embodiments, there are two battery components;

[0116] The first charging circuit is electrically connected to a battery assembly;

[0117] The second charging circuit is electrically connected to another battery assembly.

[0118] Here, the battery components proposed in this embodiment can be two independent components, each consisting of a casing, internal cells, electrodes (B+ and B-), a protection circuit board, etc. The capacity and size of these two battery components can be the same or different. Furthermore, these two battery components can either power the same electrical load in the terminal device together or power different electrical loads separately; for example, one battery component can power the screen, and the other can power the motherboard processor.

[0119] See Figure 2 , Figure 2 This is a schematic diagram of the circuit connection between a battery charging circuit and a battery assembly, according to an exemplary embodiment. Figure 1 ; combination Figure 1 and Figure 2 There are two battery components 13, including a first battery component 13a and a second battery component 13b. The first charging circuit 12a is electrically connected to the tab of the first battery component 13a, and the second charging circuit 12b is electrically connected to the tab of the second battery component 13b.

[0120] Thus, when there are two battery components in this embodiment, the first charging circuit and the second charging circuit can be used to charge the two battery components separately, realizing more diverse charging methods. Furthermore, when the two battery components supply power to different electrical loads, this disclosure can select the first interface or the second interface to charge the specified battery component according to the usage of each load, thereby adapting to different product usage scenarios and improving the flexibility of battery charging.

[0121] In other embodiments, the battery components proposed in this disclosure may also be more than two, and the number of battery components is the same as the number of the above-mentioned at least two charging interfaces and at least two battery charging circuits. In this way, each charging interface can charge a battery component individually through a battery charging circuit.

[0122] In some embodiments, combined with Figure 2 The first charging circuit 12a is connected to a battery assembly 13 via a fifth line; the second charging circuit 12b is connected to another battery assembly 13 via a sixth line.

[0123] The fifth line has a third node K3, and the sixth line has a fourth node K4;

[0124] Battery charging module 1 also includes:

[0125] The third controlled switch 16 is connected on the connection line between the third node K3 and the fourth node K4;

[0126] When both the first interface 11a and the second interface 11b are connected to the charger 2, the third controlled switch 16 is in the off state.

[0127] When the charger 2 is not connected to the first interface 11a or the charger 2 is not connected to the second interface 11b, the third controlled switch 16 is in the on state.

[0128] Here, the third controlled switch has two input terminals. One input terminal is connected to the third node and, through the fifth line, is connected to the first charging circuit and the first battery assembly, respectively. The other input terminal is connected to the fourth node and, through the sixth line, is connected to the second charging circuit and the second battery assembly, respectively. The control terminal of the third controlled switch is connected to the protocol chip described above. The protocol chip controls the on and off states of the third controlled switch by detecting the insertion of the charger at the first / second interface. When the third controlled switch is in the on state, current flows between the two input terminals; conversely, when it is in the off state, no current flows between the two input terminals.

[0129] Understandably, if both the first and second interfaces are connected to the charger, the first interface charges the first battery module through the first charging circuit, and the second interface charges the second battery module through the second charging circuit. At this time, by controlling the third controlled switch to be in the off state, the charging paths of each battery module can be made to not affect each other. In this way, by connecting the first and second interfaces to different types of chargers, the two battery modules can be in different charging modes and enjoy different charging speeds, thereby realizing the separate management and charging control of the two battery modules.

[0130] In addition, if either the first or second interface is not connected to the charger, the third controlled switch can be turned on. In this way, the first and second battery components are connected together through the third controlled switch. The charging signal input from the first (or second) interface is regulated and output through the first or second line of the first charging circuit (or the second charging circuit), and then flows through the fifth line to the first battery component line, and also flows through the sixth line to charge the second battery component. This can achieve comprehensive and effective charging in the terminal device.

[0131] It should be noted that in scenarios where none of the charging ports are connected to the charger, the power required by the electrical loads in the terminal device is provided by the two battery modules mentioned above. In this case, the third controlled switch is also in the conducting state, and the first and second battery modules are connected in parallel, supplying power to the various electrical loads together. In this way, the third controlled switch plays a role in balancing the voltage between the first and second battery modules, ensuring the power supply stability of the two battery modules. Specifically, when the voltage difference between the first and second battery modules is less than or equal to a preset voltage threshold, the two battery modules are in a state of voltage balance.

[0132] In this embodiment, the third controlled switch can be the same type as or different from the first controlled switch; that is, the third controlled switch can be a signal switch or a mechanical switch. For example, a mechanical switch can be a single-pole double-throw switch; as another example, a signal switch can be a MOSFET or an insulated-gate bipolar transistor (IGBT). Figure 2 The third controlled switch 16 shown is an insulated gate bipolar transistor; wherein, the insulated gate bipolar transistor is formed by combining two MOSFETs, the drain terminals of the two MOSFETs are connected together, and the source terminals of the two MOSFETs are connected to the third node K3 and the fourth node K4 respectively; the gate terminals of the two MOSFETs are connected to the protocol chip 17 respectively, and the insulated gate bipolar transistor is turned on and off by the high and low level of the input signal of the protocol chip 17.

[0133] This embodiment of the present disclosure, by setting a third controlled switch, enables both battery components to be charged even when the first or second interface is not powered on and connected to the charger, thereby improving the reliability and flexibility of battery charging. In addition, the third controlled switch can also balance the voltage between the two battery components, improving the stability of the two battery components supplying power to the outside at the same time.

[0134] In some other embodiments of this disclosure, when a charger is not connected to one of the charging ports of the first or second interface in this disclosure, both the first and third controlled switches may be in the ON state, or only one of the two controlled switches may be controlled to be in the ON state.

[0135] In some embodiments, the third controlled switch includes a transistor;

[0136] The first terminal of the transistor is connected to the third node;

[0137] The second terminal of the transistor is connected to the fourth node;

[0138] When the control voltage input to the control terminal of the transistor is different, the current flowing between the third node and the fourth node is different.

[0139] Here, in this embodiment, the third controlled switch is set as a transistor, specifically an insulated-gate bipolar transistor (IGBT) as described above. The drain terminals of the two MOS transistors inside are connected, and the source terminals of the two MOS transistors serve as the first and second terminals, respectively, and are connected to the third and fourth nodes. The protocol chip can be connected to the gate terminals (control terminals) of the two MOS transistors respectively, and different control voltages can be input to the gate terminals of the two MOS transistors respectively.

[0140] It should be noted that, since the two charging interfaces of this disclosure can be connected to different chargers respectively, the two battery charging circuits can conduct the circuits of voltage regulation modules with different performance, and the two battery components can also be set to different capacities, the voltage between the two battery components may be different when neither charging interface is connected to the charger. At this time, if the third controlled switch is directly turned on, a large current will be instantaneously input to the low-voltage battery component due to the excessive voltage difference, causing damage to the low-voltage battery component.

[0141] Thus, combined Figure 1 and Figure 2 In this embodiment, two protocol chips 17 are electrically connected to the first interface 11a and the second interface 11b, respectively. The two protocol chips 17 are also electrically connected to the first battery assembly 13a and the second battery assembly 13b, respectively. Thus, when the two protocol chips 17 detect that neither the first interface 11a nor the second interface 11b is powered by the charger 2, and the voltage difference between the first battery assembly 13a and the second battery assembly 13b is greater than a preset voltage threshold, they input a first control voltage to the gate terminals of the two MOS transistors; or, when the two interfaces 11a and the second interface 11b are not powered by the charger 2, and the voltage difference between the first battery assembly 13a and the second battery assembly 13b is less than or equal to a preset voltage threshold, they input a second control voltage to the gate terminals of the two MOS transistors. The current flowing between the first and second terminals when the first control voltage is input is less than the current flowing between the first and second terminals when the second control voltage is input.

[0142] It should be noted that if the voltage difference between the first and second battery modules exceeds a preset voltage threshold, the two battery modules are not in a voltage balance state. In this case, inputting a first control voltage to the two gate terminals of the insulated-gate bipolar transistor (IGBT) increases the internal resistance of the IGBT, confining it to the linear operating region and putting it in current-limiting mode. This allows the higher-voltage battery module to slowly charge the lower-voltage battery module with a small current until the two battery modules are in a voltage balance state (i.e., the voltage difference between the first and second battery modules is less than or equal to the preset voltage threshold). Conversely, if the voltage difference between the first and second battery modules is less than or equal to the preset voltage threshold, the two battery modules are in a voltage balance state. In this case, inputting a second control voltage to the gate terminal of the IGBT causes the IGBT to be fully turned on, resulting in a larger current flowing through the IGBT.

[0143] Thus, by setting the third controlled switch as a transistor and using the control module to detect the power-on status of the charging interface and the voltage of the two battery components, the present embodiment can flexibly adjust the current of the high-voltage battery component charging the low-voltage battery component and limit the charging rate, thereby improving the safety of the low-voltage battery component.

[0144] In some embodiments, see Figure 3 , Figure 3 This is a schematic diagram of the circuit connection between a battery charging circuit and a battery assembly, according to an exemplary embodiment. Figure 2 The first charging circuit 12a is electrically connected to the battery assembly 13 via the seventh line.

[0145] The second charging circuit 12b is electrically connected to the battery assembly 13 via the eighth line.

[0146] Battery charging module 1 also includes:

[0147] The first detection element 18a is located on the seventh line;

[0148] The second detection element 18b is located on the eighth line;

[0149] The current detector 19 is electrically connected to the first detection element 18a and the second detection element 18b, respectively, and is used to detect the current on the first detection element 18a and the current on the second detection element 18b, respectively.

[0150] Here, in this example, there is only one battery component, that is, the terminal device where the battery charging module is located is equipped with only one battery component. At this time, the first charging circuit and the second charging circuit are electrically connected to the tabs of the same battery component, and the charging signals output by them will be superimposed on the same battery component at the same time.

[0151] At this point, if both the chargers connected to the first and second interfaces are adjustable voltage chargers, the charging signal will be processed by the charge pumps in the first and second charging circuits respectively before being output to the battery pack. However, since the charge pumps are open-loop controlled and cannot obtain their own output current in real time, there is a possibility that due to voltage accuracy issues with each charger, the output current of one of the charge pumps may be too high, exceeding the rated operating current of the battery pack.

[0152] In view of this, in this embodiment, a first detection element is provided on the seventh line between the first charging circuit and the battery pack tabs, and a second detection element is provided on the eighth line between the second charging circuit and the battery pack tabs; a current detector is also provided and electrically connected to the first and second detection elements respectively. It is understood that since the first detection element is connected in series with the first or second line in the first charging circuit through the seventh line, the charging signal from the first interface, after being regulated by the first or second line, is output to the battery pack through the first detection element. Therefore, the current on the first detection element is the same as the output current of the first charging circuit; similarly, the current on the second detection element is the same as the output current of the second charging circuit. The current detector can determine the output current of the first and second charging circuits by detecting the current on the first and second detection elements respectively, thereby determining which battery charging circuit's charge pump has an excessively high output current.

[0153] In this embodiment of the present disclosure, the current detector is also electrically connected to the protocol chip. By outputting the detected current to the protocol chip, the protocol chip determines which battery charging circuit has an excessive output current of the charge pump and sends a command to the adjustable voltage charger corresponding to the charging interface connected to the charge pump. This causes the adjustable voltage charger to reduce the input voltage of the voltage pin VBUS, further reducing the current of the charging signal flowing through the charge pump and ensuring charging safety.

[0154] Among them, the current detector can detect the current by directly obtaining the current of the detection element, or it can first obtain the voltage across the two ends of the detection element, and then obtain the current on the detection element by the voltage difference between the two ends and the impedance value of the detection element.

[0155] It should be noted that if the charger connected to the charging interface is a fixed voltage charger, the PMIC chip of the BUCK converter has the function of detecting the current flowing in the battery charging circuit. Therefore, the output voltage of the BUCK converter can be flexibly controlled through current detection, thereby flexibly adjusting the output current of the battery charging circuit and realizing overcurrent protection when charging the same battery component.

[0156] In this embodiment of the disclosure, when the battery charging module has only one battery component, a first detection element, a second detection element, and a current detector are provided. In this way, the first detection element and the second detection element can respectively realize the current detection of the two battery charging circuits, and further flexibly control the input of the adjustable voltage charging based on the current detection to realize overcurrent protection when charging the same battery component. They can also realize buffering and voltage division during the charging process, resist the instantaneous impact of large current, and effectively improve charging safety.

[0157] In this embodiment of the disclosure, the first detection element and the second detection element may be of the same or different types, and may be configured as a resistive element or an inductive element.

[0158] In some embodiments, both the first detection element and the second detection element are resistive elements.

[0159] Since the current detection principle of resistive elements is simpler than that of inductive elements and the detection accuracy is higher, the embodiments of this disclosure set both the first detection element and the second detection element to be resistive elements, which can improve the accuracy and efficiency of current detection.

[0160] Of course, in other embodiments of this disclosure, the first detection element and the second detection element may both be inductive elements, or one may be an inductive element and the other a resistive element. This disclosure does not limit this.

[0161] This disclosure also provides a terminal device; the terminal device includes:

[0162] case;

[0163] The battery charging module proposed in the above embodiments of this disclosure has its charging interface disposed on the housing, and its battery charging circuit and battery components disposed inside the housing.

[0164] Here, terminal devices include, but are not limited to: mobile phones, tablets, wearable devices, in-vehicle devices, or IoT terminals; IoT terminals include, but are not limited to: smart home devices and / or smart office devices.

[0165] In this embodiment of the disclosure, the housing serves as a protective shell for the terminal device and is typically made of a combination of metal and plastic materials. It is used to protect various electrical loads inside the terminal device, such as the display screen, image processing components, audio processing components, and the aforementioned battery components. It is also used to support the installation of various interfaces, antennas, cameras, and other devices.

[0166] Here, at least two charging ports in the battery charging module are located at different positions on the housing and are spaced apart from each other. In actual implementation, in order to reduce signal crosstalk between two adjacent charging ports, the embodiments of this disclosure may provide a barrier between two adjacent charging ports.

[0167] The two charging ports can be located on the same side (or the same side) of the housing, or they can be located on different sides (different sides). For example, when there are two charging ports, one charging port is located on the back of the housing and the other charging port is located on the side of the housing; or, the two charging ports are located on two opposite sides of the housing.

[0168] It should be noted that the charging port in the terminal device can also be used as a data transmission interface when the charger is not connected, thereby enabling information exchange between the terminal device and external devices.

[0169] In this embodiment, the battery charging circuit of the battery charging module can be integrated on the mainboard inside the housing, or it can be integrated on another circuit board between the mid-frame and the housing; this disclosure does not impose any limitations on this. The battery charging circuit connects to the battery assembly inside the housing and outputs charging current to the battery assembly, thereby storing electrical energy for the battery assembly.

[0170] When a charger is connected to at least one charging port, the battery pack can obtain charging current through the charging port and the battery charging circuit, and each electrical load in the terminal device can obtain its allocated load current from the charging port; when no charger is connected to any of the charging ports, the battery pack can supply power to each electrical load. In this embodiment, the charging current distribution can be implemented using a PMIC module provided in the terminal device.

[0171] This embodiment of the disclosure provides at least two charging ports in the terminal device, and provides battery charging circuits for each of the at least two charging ports. This enables multiple charging ports to charge the battery pack simultaneously, which not only speeds up the charging rate and improves the charging efficiency, but also increases the utilization rate of the charging ports and improves the problem of wasted interface functions.

[0172] The following describes the charging scheme of the battery charging module proposed in this embodiment, taking two charging interfaces, both of which are Type-C interfaces, as an example.

[0173] Here, this embodiment of the disclosure provides battery charging circuits corresponding to the two Type-C interfaces respectively, enabling the two Type-C interfaces to perform charging functions simultaneously, which will improve the charging speed in some scenarios, such as when only low-power chargers are available in the charging environment. In this case, the two Type-C interfaces and their corresponding battery charging circuits can effectively superimpose the charging power of the two low-power chargers.

[0174] In one example of this disclosure, combined Figure 2 As shown, the battery assembly 13 includes two components, namely a first battery assembly 13a and a second battery assembly 13b.

[0175] In this example, each Type-C interface corresponds to a set of charging devices, and each set of charging devices is formed by a second controlled switch 15 and a battery charging circuit 12 as described above. Each battery charging circuit 12 includes a first line and a second line, with a BUCK converter from the PMIC chip installed on the first line and a charge pump installed on the second line.

[0176] In this example, the first interface 11a (a Type-C interface) charges the first battery component 13a through the first charging circuit 12a, and the second interface 11b (also a Type-C interface) charges the second battery component 13b through the second charging circuit 12b. Here, one protocol chip 17 is connected to each Type-C interface, and the protocol chip 17 performs charger insertion detection and negotiates and communicates the charging input voltage for the connected Type-C interface. Additionally, this example also provides a first controlled switch 14 and a third controlled switch 16.

[0177] Here, when both Type-C ports have chargers 2 plugged in, both the first controlled switch 14 and the third controlled switch 16, which are back-to-back switches, are in the off state. The two battery charging circuits 12 charge the two battery components independently without affecting each other. Thus, in this example, chargers 2 with different power ratings can be plugged into the two Type-C ports, and the charging speeds of the two battery components 13 do not need to be synchronized. However, if only one Type-C port has charger 2 plugged in, at least one of the first controlled switch 14 and the third controlled switch 16 is in the on state. In this case, only one charger 2 can charge both battery components 13 separately. In addition, the third controlled switch 16 is connected to the two battery components 13 respectively, so it also has the function of balancing the voltage between the two battery components 13. When one battery component 13 is fully charged and the other battery component 13 is not fully charged, the chargers 2 on the two Type-C are unplugged. At this time, the electrical load in the terminal device no longer obtains power through the external charger 2. At this time, the third controlled switch 16 is adjusted to the conducting state in this embodiment of the present disclosure, so that the two battery components 13 are connected in parallel and simultaneously supply power to the electrical load in the terminal device.

[0178] Here, because the voltages between the two battery modules 13 are different, if the third controlled switch 16 is fully on, a large instantaneous current will be generated due to the voltage difference, negatively impacting both battery modules 13 and shortening their lifespan. Therefore, it is necessary to adjust the control voltage input to the MOSFET in the third controlled switch 16 to limit the MOSFET to its linear operating region. In this current-limiting mode, the current is controlled within the expected range, allowing the high-voltage battery module 13 to slowly charge the low-voltage battery module 13 until the voltage is fully balanced. Only then is the third controlled switch 16 fully on. During the slow charging process of the high-voltage battery module 13 and after the voltage is fully balanced, both battery modules 13 continuously supply power to the load. This ensures continuous power supply to the load and guarantees the effective use of the terminal equipment.

[0179] In another example of this disclosure, combined Figure 3 As shown, the battery charging module 1 has a battery assembly 13.

[0180] In this example, the first interface 11a and the second interface 11b each correspond to a set of charging devices. Each set of charging devices is formed by a second controlled switch 15 and a battery charging circuit 12 as described above. Each battery charging circuit 12 includes a first line and a second line. The first line is equipped with a BUCK converter from the PMIC chip, and the second line is equipped with a charge pump.

[0181] In this example, the first interface 11a (which is a Type-C interface) charges the same battery pack 13 through the first charging circuit 12a, and the second interface 11b (which is also a Type-C interface) charges the same battery pack 13 through the second charging circuit 12b. This example also provides two protocol chips 17 and a first controlled switch 14, as well as a first detection element 18a, a second detection element 18b, and a current detector 19.

[0182] In this example, since there is only one battery component 13, if the outputs of the first charging circuit 12a and the second charging circuit 12b are directly connected together, it is possible that both charging circuits will use charge pumps for high-power fast charging. Because the charge pump is open-loop controlled and cannot acquire its own output current, the output current of one of the charge pumps may be too high due to voltage accuracy issues between the two chargers, exceeding the rated operating current of the battery component 13. Therefore, for an example providing only one battery component 13, this disclosure adds a detection element to each charging device, such as... Figure 3 The first detection element 18a and the second detection element 18b are shown, and the current on the first detection element 18a and the second detection element 18b is collected by a current detector, thereby determining the output current of the first charging circuit 12a and the second charging circuit 12b respectively. At this time, if the output current of a certain battery charging circuit 12 is too high, the protocol chip 17 sends a command to the charger 2 connected to the Type-C interface corresponding to the battery charging circuit 12 to reduce the VBUS voltage to reduce the output current of the battery charging circuit 12.

[0183] In addition, in this example, if only one Type-C interface is plugged into the charger 2, the first controlled switch 14 can be turned on, so that both battery charging circuits 12 can charge the battery assembly 13 at the same time.

[0184] Thus, this disclosure proposes a scheme for simultaneous charging via dual Type-C interfaces, specifically including two schemes for charging batteries with different numbers of battery components. This solves the problem that current electronic products with dual Type-C interfaces cannot charge simultaneously despite having two ports. This not only improves the charging speed in certain scenarios but also effectively enhances the user experience.

[0185] Figure 4 This is a structural block diagram illustrating a terminal device according to an exemplary embodiment. For example, the terminal device 400 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc. The terminal device 400 is any of the terminal devices proposed in the above embodiments of this disclosure.

[0186] Reference Figure 4 The terminal device 400 may include one or more of the following components: processing component 402, memory 404, battery component 406, multimedia component 408, audio component 410, input / output interface 412, sensor component 414, and communication component 416.

[0187] Processing component 402 typically controls the overall operation of terminal device 400, such as operations associated with at least one of display, telephone call, data communication, camera operation, and recording operation. Processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0188] Memory 404 is configured to store various types of data to support operation on terminal device 400. Examples of such data include at least one of the following: instructions for any application or method operating on terminal device 400, contact data, phonebook data, messages, pictures, and videos. Memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0189] Battery assembly 406 provides power to various components of terminal device 400, corresponding to the battery assembly proposed in any of the above embodiments of this disclosure. Battery assembly 406 may include at least one of the following: a power management system, a battery, and other components associated with generating, managing, and distributing power to terminal device 400.

[0190] Multimedia component 408 includes a screen that provides an output interface between terminal device 400 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a Touch Panel, the screen may be implemented as a touchscreen to receive input signals from the user. The Touch Panel includes one or more touch sensors to sense touches, swipes, and gestures on the Touch Panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 408 includes a front-facing camera and / or a rear-facing camera. When terminal device 400 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0191] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when terminal device 400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0192] Input / output interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, and buttons. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0193] Sensor assembly 414 includes one or more sensors for providing state assessments of various aspects of terminal device 400. For example, sensor assembly 414 may detect the on / off state of terminal device 400, the relative positioning of components such as the display and keypad of terminal device 400, changes in position of terminal device 400 or one of its components, the presence or absence of user contact with terminal device 400, orientation or acceleration / deceleration of terminal device 400, and temperature changes of terminal device 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include an optical sensor, such as a complementary metal-oxide-semiconductor (CMOS) or charge-coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include, but is not limited to, at least one of the following: an accelerometer, a gyroscope, a magnetometer, a pressure sensor, and a temperature sensor.

[0194] Communication component 416 is configured to facilitate wired or wireless communication between terminal device 400 and other devices. Terminal device 400 can access wireless networks based on communication standards, such as Wi-Fi, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wide Band (UWB), Bluetooth (BT), and other technologies.

[0195] In an exemplary embodiment, the terminal device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0196] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0197] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A battery charging module, characterized in that, include: At least two charging ports; At least two battery charging circuits, each of which is electrically connected to one of the charging interfaces, for acquiring the charging signal output by the connected charging interface; A battery assembly is electrically connected to the at least two battery charging circuits; wherein each of the battery charging circuits is used to charge the battery assembly via the charging signal.

2. The battery charging module according to claim 1, characterized in that, Each of the aforementioned battery charging circuits includes a first line, a second line, a switching buck converter, and a capacitor regulator: The first line is connected between the charging interface and the battery assembly; The second line is connected between the charging interface and the battery assembly, and is connected in parallel with the first line; The switching step-down converter is located in the first line, and the capacitor-type voltage regulator is located in the second line.

3. The battery charging module according to claim 1, characterized in that, The at least two battery charging circuits include a first charging circuit and a second charging circuit; the at least two charging interfaces include a first interface and a second interface. The first charging circuit is connected to the first interface via a third line; The second charging circuit is connected to the second interface via the fourth line; The third line has a first node, and the fourth line has a second node; The battery charging module also includes: The first controlled switch is connected to the connection line between the first node and the second node; When both the first interface and the second interface are connected to the charger, the first controlled switch is in the off state; When the first interface is not connected to a charger or the second interface is not connected to a charger, the first controlled switch is in the ON state.

4. The battery charging module according to claim 3, characterized in that, The battery charging module also includes: Two second controlled switches; One of the second controlled switches is disposed on the third line and located between the first node and the first interface, and is used to be in a conducting state when the charger is connected to the first interface, or in a disconnected state when the charger is not connected to the first interface. Another second controlled switch is disposed on the fourth line and located between the second node and the second interface, for being in a conducting state when the charger is connected to the second interface, or in a disconnected state when the charger is not connected to the second interface.

5. The battery charging module according to claim 3, characterized in that, The battery assembly consists of two components; The first charging circuit is electrically connected to one of the battery components; The second charging circuit is electrically connected to another of the battery components.

6. The battery charging module according to claim 5, characterized in that, The first charging circuit is connected to one of the battery components via a fifth line; the second charging circuit is connected to another of the battery components via a sixth line. The fifth line has a third node, and the sixth line has a fourth node; The battery charging module also includes: A third controlled switch is connected to the connection line between the third node and the fourth node; When both the first interface and the second interface are connected to the charger, the third controlled switch is in the off state; When the charger is not connected to the first interface or the charger is not connected to the second interface, the third controlled switch is in the on state.

7. The battery charging module according to claim 6, characterized in that, The third controlled switch includes a transistor; The first terminal of the transistor is connected to the third node; The second terminal of the transistor is connected to the fourth node; When the control voltage input to the control terminal of the transistor is different, the current flowing between the third node and the fourth node is different.

8. The battery charging module according to claim 3, characterized in that, The first charging circuit is electrically connected to the battery assembly via the seventh line; The second charging circuit is electrically connected to the battery assembly via the eighth line; The battery charging module also includes: The first detection element is disposed on the seventh line; The second detection element is disposed in the eighth line; A current detector is electrically connected to the first detection element and the second detection element, respectively, and is used to detect the current on the first detection element and the current on the second detection element, respectively.

9. The battery charging module according to claim 8, characterized in that, Both the first detection element and the second detection element are resistive elements.

10. A terminal device, characterized in that, include: case; According to any one of claims 1 to 9, the charging interface of the battery charging module is disposed on the housing, and the battery charging circuit and battery assembly of the battery charging module are both disposed inside the housing.

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