Electronic system

Abstract

An electronic system includes a first device and a second device. The first device includes a power port, a first port, a first battery, and a charge control unit. The second device includes a second port and a second battery. The power port is configured to receive an external voltage. The first battery is electrically connected to the power port and the first port. The charge control unit is electrically connected to the first port and the first battery. The second port is configured to connect to the first port. The second battery is electrically connected to the second port. When the first port is electrically connected to the second port, the charge control unit selectively connects the first battery and the second battery in series through the first port and the second port to the power port to simultaneously charge the first battery and the second battery based on voltage levels of the first battery and the second battery.

Description

TECHNICAL FIELD

[0001] The present application relates to an electronic system, and more particularly, to a rechargeable electronic system. BACKGROUND

[0002] In recent years, the rapid development of smart phones has enabled phones to support high-specification games. Some classic desktop computer games have been reproduced on phones. However, some problems have arisen when playing games on phones, such as battery life and operation smoothness. To solve these problems, game-specific phones have been developed, using larger-capacity batteries, auxiliary buttons, and phone accessories that increase play smoothness, providing many conveniences for players.

[0003] However, as the battery capacity increases, the charging time becomes longer. If the phone accessories and the phone battery are to be charged, they often need to be charged separately, which greatly reduces the convenience of charging and affects the use of the phone accessories. SUMMARY

[0004] According to an embodiment of the present application, an electronic system is provided. The electronic system includes a first device and a second device. The first device includes a power port, a first port, a first battery, and a charging control unit. The second device includes a second port and a second battery. The power port is configured to receive an external voltage. The first battery is electrically connected to the power port and the first port. The charging control unit is electrically connected to the first port and the first battery. The second port is configured to connect to the first port. The second battery is electrically connected to the second port. When the first port is electrically connected to the second port, the charging control unit selectively connects the first battery and the second battery in series between a high-voltage end and a low-voltage end of the power port via the first port and the second port to simultaneously charge the first battery and the second battery.

[0005] The electronic system provided by the present application can charge the battery of the first device (e.g., a phone) and the battery of the second device (e.g., an accessory) in series, enabling the battery to be directly charged under high power conditions and reducing the charging time of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 is a circuit schematic diagram of an embodiment of the electronic system of the present application;

[0007] Figure 2 is a circuit schematic diagram of an embodiment of the electronic system of the present application; Figure 1

[0008] Figure 3 is a circuit schematic diagram of an embodiment of the electronic system of the present application; Figure 1 ​Circuit schematic of an electronic system for parallel charging - one embodiment

[0009] Figure 4 Circuit schematic of an electronic system for charging a first battery - one embodiment Figure 1

[0010] Figure 5 Circuit schematic of an electronic system for charging a second battery - one embodiment Figure 1 DETAILED DESCRIPTION

[0011] The present application will now be described in more detail below with reference to the accompanying drawings. The advantages and features of the present application will become apparent from the following description of the preferred embodiments, taken in conjunction with the accompanying drawings. It is to be understood, however, that the application is not limited to the preferred embodiments, and is intended to cover any variations, uses, equivalents, and modifications that are within the spirit and scope of the application as defined by the appended claims. The drawings are not necessarily to scale, and are intended to aid in understanding the application. The drawings are as follows:

[0012] Figure 1 Circuit schematic of an electronic system - one embodiment. As shown in the figure, the electronic system 10 comprises a first device 100 and a second device 200.

[0013] The first device 100 comprises a power port 110, a first port 120, a first battery 130, and a charging control unit 140. The second device 200 comprises a second port 220 and a second battery 230.

[0014] The power port 110 is configured to receive an external voltage. In one embodiment, the power port 110 is configured to electrically connect to an adaptor 20 to obtain power supply from a mains power supply. The first battery 130 is electrically connected to the power port 110 and the first port 120. The second port 220 is configured to connect to the first port 120. The second battery 230 is electrically connected to the second port 220. In one embodiment, the first port 120 and the second port 220 are both Universal Serial Bus (USB) ports. In one embodiment, the first port 120 and the second port 220 are of the same type, such as USB type-C ports. However, the present application is not limited thereto. In one embodiment, the first port 120 and the second port 220 can be of different types but are capable of communication and current transfer, such as a USB type-A port and a USB type-C port.

[0015] ​​The charging control unit 140 is electrically connected to the power port 110, the first port 120 and the first battery 130. In this way, the charging control unit 140 can determine whether power is supplied through the power port 110 by connecting the adapter. As shown in the embodiment, the charging control unit 140 receives detection signals D1, D2 from the power port 110 and the first battery 130, and receives a detection signal D3 from the second battery 230 through the first port 120 to determine the voltage level thereof. However, the present application is not limited thereto. In other embodiments, the charging control unit 140 can indirectly obtain the voltage level of the first battery or the second battery through other detection units. In other embodiments, the charging control unit 140 can determine whether the power port 110 is connected to the adapter 20 according to whether power is supplied.

[0016] After determining that power is supplied, the charging control unit 140 can detect the voltage level of the first battery 130, and can detect the voltage level of the second battery 230 through the first port 120. Subsequently, the operation of the elements in the first device 100 and the second device 200 can be controlled according to a default control logic to control the charging mode thereof. The various charging modes of the electronic system 10 and the charging control logic thereof will be described in detail in the following Figures 2 to 5 and the paragraphs of Table 1.

[0017] As shown in the figure, the electronic system 10 has three selectable charging paths, i.e., a first charging path R1, a second charging path R2 and a third charging path R3.

[0018] The first charging path R1 is from a high voltage end P1 of the power port 110, through the first battery 130 to a low voltage end P2 of the power port 110. The power port 110 charges the first battery 130 through the first charging path R1. In an embodiment, the first device 100 further includes a first charging unit 150 disposed in the first charging path R1. The first charging unit 150 is used to convert the power from the power port 110 to an appropriate voltage to charge the first battery 130. The first charging unit 150 can be a buck converter. However, the present application is not limited thereto. In other embodiments, the first charging unit 150 can be a charge pump charger, a flyback converter or other types of charging circuits or chips.

[0019] The first port 120 has a first high voltage terminal P3 and a first low voltage terminal P4, and the second port 220 has a second high voltage terminal P5 and a second low voltage terminal P6. The second charging path R2 is from a high voltage terminal P1 of the power port 110, sequentially through the first high voltage terminal P3 of the first port 120, the second high voltage terminal P5 of the second port 220, and the second battery 230, to a ground terminal GND of the second device 200. The power port 110 charges the second battery 230 through the second charging path R2, via the first port 120 and the second port 220. In one embodiment, the second device 200 further includes a second charging unit 250 disposed in the second charging path R2. The second charging unit 250 is used to convert the power from the second port 220 into a proper voltage to charge the second battery 230. The second charging unit 250 can be a buck converter. However, it is not limited thereto. In other embodiments, the second charging unit 250 can be a charge pump charger, a flyback converter, or other types of charging circuits or chips.

[0020] In one embodiment, the first device 100 further includes a first switch element SW1 disposed in the second charging path R2, for selectively conducting a circuit between the high voltage terminal P1 of the power port 110 and the first high voltage terminal P3 of the first port 120. In one embodiment, the second device 200 further includes a second switch element SW2 disposed in the second charging path R2, for selectively conducting a circuit between a negative terminal of the second battery 230 and a ground terminal GND of the second port 220.

[0021] The third charging path R3 is from a high voltage terminal P1 of the power port 110, sequentially through the first high voltage terminal P3 of the first port 120, the second high voltage terminal P5 of the second port 220, the second battery 230, the second low voltage terminal P6 of the second port 220, the first low voltage terminal P4 of the first port 120, and the first battery 130, to a low voltage terminal P2 of the power port 110. The power port 110 charges the first battery 130 and the second battery 230 simultaneously through the third charging path R3, via the first port 120 and the second port 220. The first battery 130 is connected in series with the second battery 230 through the first port 120 and the second port 220.

[0022] In one embodiment, the first device 100 further includes a third charging unit 160 disposed in the third charging path R3. The third charging unit 160 can ensure that there is sufficient charging voltage when charging via the third charging path. The third charging unit 160 can be a charge pump charger to improve the conversion efficiency when charging.

[0023] In one embodiment, the second device 200 further includes a third switching element SW3 disposed in the third charging path R3, for selectively energizing the circuit between the second high-voltage terminal P5 of the second port 220 and the second battery 230. In another embodiment, the second device 200 further includes a fourth switching element SW4 disposed in the third charging path R3, for selectively energizing the circuit between the second battery 230 and the second low-voltage terminal P6 of the second port 220.

[0024] Based on the aforementioned selection of charging paths, the electronic system 10 of the present invention can provide four charging modes: series charging, parallel charging, charging the first battery 130 alone, and charging the second battery 230 alone. These four charging modes will be described below.

[0025] Please refer to the above as well. Figure 2 As shown, Figure 2 yes Figure 1 A circuit diagram of an embodiment of series charging of the electronic system 10. In this embodiment, charging is performed through the third charging path R3.

[0026] Specifically, in the series charging mode, the first switching element SW1 and the second switching element SW2 will be cut off, while the third switching element SW3 and the fourth switching element SW4 will be turned on. In addition, the first charging unit 150 and the second charging unit 250 are both disabled, while the third charging unit 160 is enabled.

[0027] Please refer to the above as well. Figure 3 As shown, Figure 3 yes Figure 1 A circuit diagram of an embodiment of parallel charging of the electronic system 10. In this embodiment, the first charging path R1 and the second charging path R2 are selected and used for charging.

[0028] Specifically, in parallel charging mode, the first switching element SW1 and the second switching element SW2 will be turned on, while the third switching element SW3 and the fourth switching element SW4 will be turned off. In addition, the first charging unit 150 and the second charging unit 250 are both activated, while the third charging unit 160 is deactivated.

[0029] Please refer to the above as well. Figure 4 As shown, Figure 4 yes Figure 1 A circuit diagram of an embodiment of the electronic system 10 charging the first battery 130. In this embodiment, charging is performed via the first charging path R1.

[0030] Specifically, in the mode of charging the first battery 130, the first switch element SW1, the second switch element SW2, the third switch element SW3 and the fourth switch element SW4 are all turned off. In addition, the second charging unit 250 and the third charging unit 160 are both deactivated, and only the first charging unit 150 is activated to charge the first battery 130.

[0031] Referring to FIG. 1, an electronic system 10 is shown. Figure 5 Figure 5 is Figure 1 A circuit schematic diagram of an embodiment of the electronic system 10 charging the second battery 230 is shown. In this embodiment, the second charging path R2 is selected for charging.

[0032] Specifically, in the mode of charging the second battery 230, the first switch element SW1 and the second switch element SW2 are turned on, and the third switch element SW3 and the fourth switch element SW4 are turned off. In addition, the first charging unit 150 and the third charging unit 160 are both deactivated, and only the second charging unit 250 is activated to charge the second battery 230.

[0033] The electronic system 10 can determine the charging mode by the voltage levels of the first battery 130 and the second battery 230, and the charging control logic is shown in Table 1. Specifically, when the first device 100 is electrically connected to the second device 200 through the first port 120 and the power port 110 of the first device 100 is connected to an external power source, the charging control unit 140 controls the operation of the elements in the first device 100 and the second device 200 according to the control logic in Table 1. The electrical connection can be direct plug-in of connectors, connection through wires, or wireless connection.

[0034] Table 1

[0035]

[0036]

[0037] As shown in Table 1, when the voltage level V1 of the first battery 130 is less than a first default voltage (4V as shown in the table) and the voltage level V2 of the second battery 230 is less than a second default voltage (4V as shown in the table), the first device 100 and the second device 200 enter the series charging mode shown in FIG. 2 to charge directly. That is, the charging control unit 140 connects the first battery 130 and the second battery 230 in series between a high voltage end P1 and a low voltage end P2 of the power port 110 through the first port 120 and the second port 220, and charges the first battery 130 and the second battery 230. In this case, high-power large current can be used for charging to shorten the charging time. Figure 2 As shown in Table 1, when the voltage level V1 of the first battery 130 is less than a first default voltage (4V as shown in the table) and the voltage level V2 of the second battery 230 is less than a second default voltage (4V as shown in the table), the first device 100 and the second device 200 enter the series charging mode shown in FIG. 2 to charge directly. That is, the charging control unit 140 connects the first battery 130 and the second battery 230 in series between a high voltage end P1 and a low voltage end P2 of the power port 110 through the first port 120 and the second port 220, and charges the first battery 130 and the second battery 230. In this case, high-power large current can be used for charging to shorten the charging time.​

[0038] The levels of the first and second default voltages depend on the saturation voltages of the first and second batteries 130 and 230. In one embodiment, as shown in the table, the first and second batteries 130 and 230 have the same saturation voltage, and the first and second default voltages are also the same. The first and second default voltages are used as the basis for switching the charging mode to avoid overheat or damage of the batteries caused by overcharging with a large current.

[0039] Referring to Table 1, when the voltage level VI of the first battery 130 is higher than the first default voltage (4V as shown in the table) or the voltage level V2 of the second battery 230 is higher than the second default voltage (4V as shown in the table), the charging control unit 140 controls the first device 100 and the second device 200 to switch to the parallel charging mode as shown in the table. Figure 3 The parallel charging mode shown in the table causes current to be shunted to reduce the current value for charging the first and second batteries 130 and 230, thereby avoiding overheat or damage of the batteries caused by overcharging with a large current.

[0040] Referring to Table 1, when the voltage level V2 of the second battery 230 is greater than or equal to the default saturation voltage of the second battery 230 (4.32V as shown in the table), it indicates that the second battery 230 is fully charged. At this time, the charging control unit 140 controls the first device 100 and the second device 200 to switch to the charging mode as shown in the table, and stops charging the second battery 230 and only charges the first battery 130. Figure 4

[0041] Referring to Table 1, when the voltage level VI of the first battery 130 is greater than or equal to the default saturation voltage of the first battery 130 (4.32V as shown in the table), it indicates that the first battery 130 is fully charged. At this time, the charging control unit 140 controls the first device 100 and the second device 200 to switch to the charging mode as shown in the table, and stops charging the first battery 130 and only charges the second battery 230. Figure 5

[0042] When the voltage level VI of the first battery 130 is greater than or equal to the default saturation voltage of the first battery 130 (4.32V as shown in the table) and the voltage level V2 of the second battery 230 is greater than or equal to the default saturation voltage of the second battery 230 (4.32V as shown in the table), it indicates that the first and second batteries 130 and 230 are fully charged. At this time, the charging control unit 140 controls the first and second charging units 150 and 250 to enter the inactive state, and stops charging the first and second batteries 130 and 230.

[0043] ​​The electronic system can connect the battery of the first device (for example, a mobile phone) and the battery of the second device (for example, an accessory) in series to charge, so that the battery can be directly charged under high power conditions, and the battery charging time is reduced.

[0044] Although the present application has been disclosed with reference to the embodiments above, it is not intended to limit the present application, and any person skilled in the art can make some changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application should be defined by the claims.

Claims

1. An electronic system, characterized in that, Include: The first device includes: Power port, used to receive external voltage; The first port has a first high-voltage end and a first low-voltage end; The first battery is electrically connected to the power port and the first port. as well as A charging control unit electrically connected to the first port and the first battery; and a second device comprising: The second port is used to connect to the first port, and the second port has a second high-voltage end and a second low-voltage end; as well as The second battery is electrically connected to the aforementioned second port; Wherein, when the first port is electrically connected to the second port, the charging control unit selectively connects the first battery and the second battery in series between the high-voltage and low-voltage ends of the power port through the first port and the second port, based on the voltage levels of the first battery and the second battery, so as to charge the first battery and the second battery simultaneously; and The power port charges the second battery via the first port and the second port through the second charging path. The second charging path starts from the high voltage terminal of the power port, passes through the first high voltage terminal, the second high voltage terminal and the second battery in sequence, and ends at the ground terminal.

2. The electronic system as claimed in claim 1, characterized in that, The power port charges the first battery through a first charging path, which runs from the high-voltage end of the power port, through the first battery, to the low-voltage end of the power port.

3. The electronic system as described in claim 2, characterized in that, The first device further includes a first charging unit disposed in the first charging path.

4. The electronic system as claimed in claim 3, characterized in that, The first charging unit mentioned above is a buck converter.

5. The electronic system as claimed in claim 1, characterized in that, The second device further includes a second charging unit disposed in the second charging path.

6. The electronic system as claimed in claim 5, characterized in that, The second charging unit mentioned above is a buck converter.

7. The electronic system as claimed in claim 1, characterized in that, The first device further includes a first switching element disposed in the second charging path for selectively activating the circuit between the high-voltage terminal and the first high-voltage terminal of the power supply port.

8. The electronic system as claimed in claim 1, characterized in that, The second device further includes a second switching element disposed in the second charging path for selectively activating the circuit between the negative terminal of the second battery and the ground terminal.

9. The electronic system as claimed in claim 1, characterized in that, The aforementioned power port charges the first battery and the second battery simultaneously via the third charging path, through the first port and the second port, and the first battery is connected in series with the second battery via the first port and the second port.

10. The electronic system as claimed in claim 9, characterized in that, The third charging path is from the high-voltage terminal of the power port, through the first high-voltage terminal, the second high-voltage terminal, the second battery, the second low-voltage terminal, the first low-voltage terminal and the first battery, to the low-voltage terminal of the power port.

11. The electronic system as claimed in claim 10, characterized in that, The first device also includes a third charging unit disposed in the third charging path.

12. The electronic system as claimed in claim 11, characterized in that, The third charging unit mentioned above is a charge pump charger.

13. The electronic system as claimed in claim 10, characterized in that, The second device further includes a third switching element disposed in the third charging path for selectively activating the circuit between the second high-voltage terminal and the second battery.

14. The electronic system as claimed in claim 10, characterized in that, The second device further includes a fourth switching element disposed in the third charging path for selectively activating the circuit between the second battery and the second low-voltage terminal.

15. The electronic system as claimed in claim 1, characterized in that, When the voltage level of the first battery is less than the first default voltage and the voltage level of the second battery is less than the second default voltage, the charging control unit connects the first battery and the second battery in series between the high voltage terminal and the low voltage terminal of the power port through the first port and the second port, so as to charge the first battery and the second battery simultaneously.

16. The electronic system as claimed in claim 1, characterized in that, The first port and the second port mentioned above are universal serial bus ports.

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