Power module and electronic device having the same

Abstract

A power module comprising a first power output, a second power output, a first battery unit, a second battery unit, a bridging transmission circuit, a bridging switching element, and a control unit is provided. The first battery unit is electrically coupled to the first power output for supplying power to the system through a first battery discharging circuit. The second battery unit is electrically coupled to the second power output for supplying power to the system through a second battery discharging circuit. The bridging transmission circuit is connected to the first power output and the second power output. The bridging switching element is located on the bridging transmission circuit. The control unit is for receiving a first battery parameter from the first battery unit and turning off the first battery unit and having the bridging switching element in an on state when the first battery parameter meets a predetermined condition.

Description

[Technical Field]

[0001] This case relates to a power module for an electronic device, and more particularly to a power module having multiple battery packs and an electronic device having the power module. [Previous Technology]

[0002] Currently available portable electronic devices, such as laptops, tablets, and mobile phones, are all powered by internal battery packs. The capacity of the battery pack is limited by the internal dimensions and structural design of the electronic device.

[0003] With the trend towards thinner and lighter portable electronic devices, in many cases, electronic devices must adopt a multi-battery design to increase battery capacity and extend battery life. However, configuring multiple battery packs in electronic devices will lead to the problem of voltage matching between different battery packs. [Summary of the Invention]

[0004] This application provides a power module suitable for an electronic device having a system. The power module includes a first power output terminal, a second power output terminal, a first battery cell, a second battery cell, a bridging power transmission line, a bridging switch element, and a control unit. The first power output terminal is electrically coupled to the system. The second power output terminal is electrically coupled to the system. The first battery cell is electrically coupled to the first power output terminal and is adapted to supply power to the system through a first battery power supply line. The second battery cell is electrically coupled to the second power output terminal and is adapted to supply power to the system through a second battery power supply line. The bridging power transmission line connects the first power output terminal and the second power output terminal. The bridging switch element is disposed on the bridging power transmission line. The control unit is electrically coupled to the first battery cell and the bridging switch element, adapted to acquire a first battery parameter corresponding to the first battery cell, and when the first battery parameter meets a preset condition, to turn off the first battery cell and put the bridging switch element in a conducting state.

[0005] This application provides another power module suitable for an electronic device having a system. The power module includes a first power output terminal, a second power output terminal, a first battery cell, a second battery cell, a bridging power transmission line, a bridging switch element, a first power output switch element, and a control unit. The first power output terminal is electrically coupled to the system. The second power output terminal is electrically coupled to the system. The first battery cell is electrically coupled to the first power output terminal and is adapted to supply power to the system through a first battery power supply line. The second battery cell is electrically coupled to the second power output terminal and is adapted to supply power to the system through a second battery power supply line. The bridging power transmission line connects the first power output terminal and the second power output terminal. The bridging switch element is disposed on the bridging power transmission line. The first power output switch element is disposed on the first battery power supply line. The control unit is electrically coupled to the first battery cell, the bridging switch element, and the first power output switch element. It is adapted to acquire a first battery parameter corresponding to one of the first battery cells, and when the first battery parameter meets a preset condition, to put the first power output switch element in the off state and to put the bridging switch element in the on state.

[0006] This invention also provides an electronic device. This electronic device includes a system and a power module. The power module includes a first power output terminal, a second power output terminal, a first battery cell, a second battery cell, a bridging power transmission line, a bridging switch element, and a control unit. The first power output terminal is electrically coupled to the system. The second power output terminal is electrically coupled to the system. The first battery cell is electrically coupled to the first power output terminal and is adapted to supply power to the system through a first battery power supply line. The second battery cell is electrically coupled to the second power output terminal and is adapted to supply power to the system through a second battery power supply line. The bridging power transmission line connects the first power output terminal and the second power output terminal. The bridging switch element is disposed on the bridging power transmission line. The control unit is electrically coupled to the first battery cell and the bridging switch element, adapted to acquire a first battery parameter corresponding to one of the first battery cells, and when the first battery parameter meets a preset condition, to turn off the first battery cell and put the bridging switch element in a conducting state.

[0007] As mentioned above, the power module provided in this application has a first battery unit and a second battery unit, each capable of independently supplying power to the system. When the control unit detects that the first battery parameters of the first battery unit meet preset conditions, it immediately stops supplying power to the first battery unit and instead supplies power to the system through the second battery unit via the first power output terminal corresponding to the first battery unit. In this way, the battery life can be effectively extended, and the voltage matching problem arising from multiple battery packs can also be avoided.

Implementation Method

[0008] The specific embodiments of this case will be described in more detail below with reference to the schematic diagrams. The advantages and features of this case will become clearer based on the following description and the scope of the patent application. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this case.

[0009] The first figure is a block diagram of a power module 100 provided according to an embodiment of the present invention. This power module 100 is suitable for an electronic device 10. This electronic device 10 has a system 12. This electronic device 10 may be a portable electronic device.

[0010] As shown in the figure, the power module 100 includes a first power output terminal VSYS1, a second power output terminal VSYS2, a first battery unit BAT1, a second battery unit BAT2, a bridging power transmission line PH1, a bridging switching element BRBFET, a first power supply switching element NFET1, a second power supply switching element NFET2, and a control unit 120.

[0011] The first power output terminal VSYS1 is electrically coupled to system 12. The second power output terminal VSYS2 is electrically coupled to system 12.

[0012] The first battery cell BAT1 is electrically coupled to the first power output terminal VSYS1 and is adapted to supply power to the system 12 through a first battery power supply line PH2. The first power supply switching element NFET1 is disposed in the first battery power supply line PH2. The second battery cell BAT2 is electrically coupled to the second power output terminal VSYS2 and is adapted to supply power to the system 12 through a second battery power supply line PH3. The second power supply switching element NFET2 is disposed in the second battery power supply line PH3.

[0013] The bridging power transmission line PH1 connects the first power output terminal VSYS1 and the second power output terminal VSYS2. The bridging switching element BRBFET is located in the bridging power transmission line PH1.

[0014] The control unit 120 is electrically coupled to the first battery cell BAT1 and the bridge switching element BRBFET. It is adapted to acquire a first battery parameter PBAT1 corresponding to the first battery cell BAT1, and when the first battery parameter PBAT1 meets a preset condition, turn off the first battery cell BAT1 and turn on the bridge switching element BRBFET. In this way, the second battery cell BAT2 can supply power to the system 12 through the first power output terminal VSYS1 corresponding to the first battery cell BAT1.

[0015] In one embodiment, the control unit 120 is also electrically coupled to the first power supply switching element NFET1 and the second power supply switching element NFET2 to control the conduction state of the first battery power supply line PH2 and the second battery power supply line PH3.

[0016] In one embodiment, the first battery parameter PBAT1 is the battery voltage, and the preset condition is that the first battery parameter PBAT1 is lower than a preset voltage value. However, it is not limited to this. In one embodiment, the first battery parameter PBAT1 is the battery charge, and the preset condition is that the first battery parameter PBAT1 is lower than a preset charge value.

[0017] In one embodiment, the control unit 120 shutting down the first battery unit BAT1 means that the control unit 120 controls the first battery unit BAT1 to enter shipping mode. However, it is not limited to this. In one embodiment, the first battery unit BAT1 has a battery switch unit BATFET1 to control whether the current of the first battery unit BAT1 flows to the outside, and the control unit 120 shutting down the first battery unit BAT1 means that the control unit 120 controls the first battery unit BAT1 to disconnect the battery switch unit. Similarly, in other embodiments, the second battery unit BAT2 may also have a battery switch unit BATFET2 to control whether the current of the second battery unit BAT2 flows to the outside.

[0018] In one embodiment, the control unit 120 puts the bridge switching element BRBFET into a conducting state by putting the bridge switching element BRBFET into a unidirectional conducting state from the second power output terminal VSYS2 to the first power output terminal VSYS1. In one embodiment, the bridge switching element BRBFET may include two back-to-back metal-oxide-semiconductor field-effect transistors, and the conduction direction of the bridge switching element BRBFET can be controlled by selectively turning on one of the metal-oxide-semiconductor field-effect transistors.

[0019] Please refer to Figures 2 and 3 together. Figures 2 and 3 show the power supply control process of the power module 100 in Figure 1 after the system 12 is started.

[0020] First, as described in step S210, after the system 12 is started, the control unit 120 immediately controls the bridge switching element BRBFET to the open circuit state and controls the first power supply switching element NFET1 and the second power supply switching element NFET2 to the on state.

[0021] Subsequently, as described in the determination step S220, the control unit 120 confirms whether the power module 100 is operating in battery mode (also known as DC mode).

[0022] If it is confirmed that the power module 100 is operating in battery mode, for example, if no external power supply is detected, this process proceeds to the battery mode control loop, as shown in Figure 3. Otherwise, this process proceeds to the adapter mode control loop. The adapter mode control loop is not the focus of this case and will not be described in detail here.

[0023] In the battery mode control cycle, firstly, as described in the determination step S305, the control unit 120 confirms whether the power module 100 is operating in adapter mode.

[0024] If it is confirmed that the power module 100 is not operating in adapter mode, the process proceeds to the judgment step S310, where the control unit 120 obtains the first battery parameter PBAT1 of the first battery unit BAT1 and the second battery parameter PBAT2 of the second battery unit BAT2 to confirm whether any battery parameter of any battery unit meets the preset conditions. In one embodiment, the first battery parameter PBAT1 and the second battery parameter PBAT2 can be battery voltages, and the corresponding preset conditions are that the first battery parameter PBAT1 is lower than a preset voltage value and the second battery parameter PBAT2 is lower than a preset voltage value, indicating that the power is about to be depleted. However, it is not limited to this. In one embodiment, the first battery parameter PBAT1 and the second battery parameter PBAT2 can be battery charge levels, and the corresponding preset conditions are that the first battery parameter PBAT1 is lower than a preset charge level and the second battery parameter PBAT2 is lower than a preset charge level, indicating that the power is about to be depleted.

[0025] If the judgment result of step S310 is negative, the process returns to step S305. If the battery parameters of any battery cell meet the preset conditions, the process proceeds to step S320 to adjust the system power settings, such as reducing the power consumption of the central processing unit. Subsequently, as described in steps S330 and S335, the control unit 120 controls the first power supply switching element NFET1 and the second power supply switching element NFET2 to the off state, and controls the bridge switching element BRBFET to the on state.

[0026] Next, as described in step S340, the control unit 120 confirms whether the first battery parameter PBAT1 of the first battery unit BAT1 meets the preset conditions. If the first battery parameter PBAT1 of the first battery unit BAT1 meets the preset conditions, the process proceeds to step S350, and the control unit 120 shuts down the first battery unit BAT1. Subsequently, as described in step S355, the control unit 120 turns on the second power supply switching element NFET2, thereby ending this control cycle. At this time, the second battery unit BAT2 can be powered to the first power output terminal VSYS1 through the second power supply switching element NFET2 and the bridge switching element BRBFET.

[0027] If the first battery parameter PBAT1 of the first battery unit BAT1 does not meet the preset conditions, it means that the second battery parameter PBAT2 of the second battery unit BAT2 meets the preset conditions. At this time, the process proceeds to step S360, and the control unit 120 turns off the second battery unit BAT2. Subsequently, as described in step S365, the control unit 120 turns on the first power supply switching element NFET1, thereby ending this control cycle. At this time, the first battery unit BAT1 can be powered to the second power output terminal VSYS2 through the first power supply switching element NFET1 and the bridge switching element BRBFET.

[0028] The aforementioned power supply control process describes the operation state when the first battery parameter PBAT1 of the first battery unit BAT1 or the second battery parameter PBAT2 of the second battery unit BAT2 does not meet the preset conditions. However, this invention is not limited to this. In other embodiments, in order to simplify the control process, only the first battery parameter PBAT1 of the first battery unit BAT1 can be detected, and when the first battery parameter PBAT1 meets the preset conditions, the second battery unit BAT2 can replace the first battery unit BAT1 to supply power to the system 12. For example, the first battery unit BAT1 can be a main battery, and the second battery unit BAT2 can be a secondary battery. When the main battery power is lower than the preset power, the secondary battery will supply power instead.

[0029] As described above, the control unit 120 is electrically coupled to the first battery cell BAT1 to obtain the first battery parameter PBAT1 corresponding to the first battery cell BAT1, and can also be electrically coupled to the second battery cell BAT2 to obtain a second battery parameter PBAT2 corresponding to the second battery cell BAT2. Furthermore, when the second battery parameter PBAT2 meets preset conditions, the control unit 120 can turn off the second battery cell BAT2 and turn on the bridge switching element BRBFET. Thus, the first battery cell BAT1 can supply power to the system 12 through the second power output terminal VSYS2 corresponding to the second battery cell BAT2.

[0030] In one embodiment, the power module 100 further includes a power input terminal VIN, a first charging unit 140, and a second charging unit 150. The power input terminal VIN is adapted to obtain external power (not shown). The first charging unit 140 is electrically coupled to the power input terminal VIN and a first battery unit BAT1. The first charging unit 140 is adapted to obtain external power to charge the first battery unit BAT1. The second charging unit 150 is electrically coupled to the power input terminal VIN and a second battery unit BAT2. The second charging unit 150 is adapted to obtain external power to charge the second battery unit BAT2. In another embodiment, the power input terminal VIN includes a plurality of power input channels Vbus. These power input channels Vbus can obtain power from different power sources.

[0031] In one embodiment, the power module 100 further includes a first direct power transmission line PH4, a first direct switching element BPFET1, a second direct power transmission line PH5, and a second direct switching element BPFET2. The first direct power transmission line PH4 connects the power input terminal VIN and the first power output terminal VSYS1, allowing the electrical energy received at the power input terminal VIN to be directly supplied to the system 12 through the first power output terminal VSYS1. The first direct switching element BPFET1 is disposed on the first direct power transmission line PH4. The second direct power transmission line PH5 connects the power input terminal VIN and the second power output terminal VSYS2, allowing the electrical energy received at the power input terminal VIN to be directly supplied to the system 12 through the second power output terminal VSYS2. The second direct switching element BPFET2 is disposed on the second direct power transmission line PH5.

[0032] In one embodiment, the power module 100 further includes a first charger power transmission line PH6 and a second charger power transmission line PH7. The first charger power transmission line PH6 is connected to a first charging output terminal 142 of the first charging unit 140 and a first battery power supply line PH2. The second charger power transmission line PH7 is connected to a second charging output terminal 152 of the second charging unit 150 and a second battery power supply line PH3.

[0033] Thus, the first charging unit 140 can charge the first battery unit BAT1 through the first battery power supply line PH2, and can also supply power to the system 12 through the first battery power supply line PH2 when necessary. Similarly, the second charging unit 150 can charge the second battery unit BAT2 through the second battery power supply line PH3, and can also supply power to the system 12 through the second battery power supply line PH3 when necessary.

[0034] Figure 4 is a block diagram of a power module 400 provided according to another embodiment of the present invention. This power module 400 is adapted to an electronic device 40. This electronic device 40 has a system 42. This electronic device 40 may be a portable electronic device.

[0035] As shown in the figure, this power module 400 includes a first power output terminal VSYS1, a second power output terminal VSYS2, a first battery unit BAT1, a second battery unit BAT2, a bridging power transmission line PH1, a bridging switching element BRBFET, a first power output switching element SRBFET1, a second power output switching element SRBFET2, a first power supply switching element NFET1, a second power supply switching element NFET2, and a control unit 420.

[0036] A first power output terminal VSYS1 is electrically coupled to system 42. A second power output terminal VSYS2 is electrically coupled to system 42. A first battery unit BAT1 is electrically coupled to the first power output terminal VSYS1 and is adapted to supply power to system 42 through a first battery power supply line PH2. A first power supply switching element NFET1 is disposed in the first battery power supply line PH2. A second battery unit BAT2 is electrically coupled to the second power output terminal VSYS2 and is adapted to supply power to system 42 through a second battery power supply line PH3. A second power supply switching element NFET2 is disposed in the second battery power supply line PH3.

[0037] The bridging power transmission line PH1 connects the first power output terminal VSYS1 and the second power output terminal VSYS2. The bridging switching element BRBFET is located in the bridging power transmission line PH1.

[0038] A first power output switching element SRBFET1 is disposed in the first battery power supply line PH2 and is located in the circuit between the first power supply switching element NFET1 and the first power output terminal VSYS1. A second power output switching element SRBFET2 is disposed in the second battery power supply line PH3 and is located in the circuit between the second power supply switching element NFET2 and the second power output terminal VSYS2.

[0039] The control unit 420 is electrically coupled to the first battery cell BAT1, the bridge switch element BRBFET and the first power output switch element SRBFET1, and is adapted to acquire a first battery parameter PBAT1 corresponding to the first battery cell BAT1, and when the first battery parameter PBAT1 meets a preset condition, to put the first power output switch element SRBFET1 in the off state and to put the bridge switch element BRBFET in the on state.

[0040] In one embodiment, the control unit 420 is electrically coupled to the first battery cell BAT1, the bridge switch element BRBFET and the first power output switch element SRBFET1, and can also be electrically coupled to the second battery cell BAT2 and the second power output switch element SRBFET2. When the second battery parameter PBAT2 meets the preset conditions, the power output switch element is turned off and the bridge switch element BRBFET is turned on.

[0041] In one embodiment, the control unit 420 is also electrically coupled to the first power supply switching element NFET1 and the second power supply switching element NFET2 to control the conduction state of the first battery power supply line PH2 and the second battery power supply line PH3.

[0042] Please refer to Figures 5 and 6 together. Figures 5 and 6 show the power supply control process of the power module 400 in Figure 4 after the system 42 is started.

[0043] First, as described in step S510, after the system 42 is started, the control unit 420 immediately controls the bridge switching element BRBFET to the open circuit state and controls the first power supply switching element NFET1 and the second power supply switching element NFET2 to the on state.

[0044] Subsequently, as described in the determination step S520, the control unit 420 confirms whether the power module 400 is operating in battery mode (also known as DC mode).

[0045] If it is confirmed that the power module 400 is operating in battery mode, for example, if no external power supply is detected, this process proceeds to the battery mode control loop, as shown in Figure 6. Otherwise, this process proceeds to the adapter mode control loop. The adapter mode control loop is not the focus of this case and will not be described in detail here.

[0046] In the battery mode control cycle, firstly, as described in the determination step S605, the control unit 420 confirms whether the power module 400 is operating in adapter mode.

[0047] If it is confirmed that the power module 400 is not operating in adapter mode, the process proceeds to the judgment step S610, where the control unit 420 obtains the first battery parameter PBAT1 of the first battery unit BAT1 and the second battery parameter PBAT2 of the second battery unit BAT2 to confirm whether any battery parameter of any battery unit meets the preset conditions. In one embodiment, the first battery parameter PBAT1 and the second battery parameter PBAT2 can be battery voltages, and the corresponding preset conditions are that the first battery parameter PBAT1 is lower than a preset voltage value and the second battery parameter PBAT2 is lower than a preset voltage value, indicating that the power is about to be depleted. However, it is not limited to this. In one embodiment, the first battery parameter PBAT1 and the second battery parameter PBAT2 can be battery charge levels, and the corresponding preset conditions are that the first battery parameter PBAT1 is lower than a preset charge level and the second battery parameter PBAT2 is lower than a preset charge level, indicating that the power is about to be depleted.

[0048] If the judgment result of step S610 is negative, the process returns to step S605. If the battery parameters of any battery cell meet the preset conditions, the process proceeds to step S620 to adjust the system power settings, such as reducing the power consumption of the central processing unit. Subsequently, as described in steps S630 and S635, the control unit 420 controls the first power supply switching element NFET1 and the second power supply switching element NFET2 to the off state, and controls the bridge switching element BRBFET to the on state.

[0049] Next, as described in step S640, the control unit 420 confirms whether the first battery parameter PBAT1 of the first battery unit BAT1 meets the preset conditions. If the first battery parameter PBAT1 of the first battery unit BAT1 meets the preset conditions, the process proceeds to step S650, where the control unit 420 controls the first power output switching element SRBFET1 to the off state. Subsequently, as described in step S655, the control unit 420 turns on the second power supply switching element NFET2, thereby ending this control cycle. At this time, the second battery unit BAT2 can be powered to the first power output terminal VSYS1 through the second power supply switching element NFET2 and the bridging switching element BRBFET.

[0050] If the first battery parameter PBAT1 of the first battery unit BAT1 does not meet the preset conditions, it means that the second battery parameter PBAT2 of the second battery unit BAT2 meets the preset conditions. At this time, the process proceeds to step S660, and the control unit 420 controls the second power output switching element SRBFET2 to the off state. Subsequently, as described in step S665, the control unit 420 turns on the first power supply switching element NFET1, thereby ending this control cycle. At this time, the first battery unit BAT1 can be powered to the second power output terminal VSYS2 through the first power supply switching element NFET1 and the bridging switching element BRBFET.

[0051] As mentioned above, the control unit 420 is electrically coupled to the first battery cell BAT1 to obtain the first battery parameter PBAT1 corresponding to the first battery cell BAT1, and can also be electrically coupled to the second battery cell BAT2 to obtain a second battery parameter PBAT2 corresponding to the second battery cell BAT2. Furthermore, when the second battery parameter PBAT2 meets preset conditions, the control unit 420 can turn off the second power output switching element SRBFET2 and turn on the bridging switching element BRBFET. Thus, the first battery cell BAT1 can supply power to the system 42 through the second power output terminal VSYS2 corresponding to the second battery cell BAT2.

[0052] Figure 7 is a block diagram of an electronic device 70 provided according to an embodiment of the present invention. The electronic device 70 includes a system 72 and a power module 700. The electronic device 70 may be a portable electronic device.

[0053] System 72 includes a first system portion 722 and a second system portion 724. In one embodiment, the first system portion 722 and the second system portion 724 operate at different voltages. For example, the first system portion 722 may receive 12V power, while the second system portion 724 may receive 5V power, but this is not a limitation. In other embodiments, the first system portion 722 and the second system portion 724 may be distinguished by the function of the components. For example, the processing components of system 72 (such as the central processing unit and the graphics processing unit) may belong to the first system portion 722, while other components of system 72 may belong to the second system portion 724.

[0054] The power module 700 includes a first power output terminal VSYS1, a second power output terminal VSYS2, a first battery unit BAT1, a second battery unit BAT2, a bridging power transmission line PH1, a bridging switching element BRBFET, and a control unit 720.

[0055] The first power output terminal VSYS1 is electrically coupled to the first system section 722, and the second power output terminal VSYS2 is coupled to the second system section 724.

[0056] The first battery unit BAT1 is electrically coupled to the first power output terminal VSYS1 and is adapted to supply power to the first system section 722 through a first battery power supply line PH2. The second battery unit BAT2 is electrically coupled to the second power output terminal VSYS2 and is adapted to supply power to the second system section 724 through a second battery power supply line PH3.

[0057] A bridging power transmission line PH1 connects a first power output terminal VSYS1 and a second power output terminal VSYS2. A bridging switch element BRBFET is disposed on the bridging power transmission line PH1. A control unit 720 is electrically coupled to a first battery cell BAT1 and the bridging switch element BRBFET, and is adapted to acquire a first battery parameter PBAT1 corresponding to one of the first battery cells BAT1, and when the first battery parameter PBAT1 meets a preset condition, to turn off the first battery cell BAT1 and to turn on the bridging switch element BRBFET.

[0058] The power modules 100, 400, and 700 described in the foregoing embodiments have two battery units, which can supply power to systems 12, 42, and 72 through a first power output terminal VSYS1 and a second power output terminal VSYS2. However, this invention is not limited to this. This invention can also be applied to power modules having three or more battery units.

[0059] In summary, the power modules 100, 400, and 700 provided in this application have a first battery unit BAT1 and a second battery unit BAT2, each capable of independently supplying power to systems 12, 42, and 72. When the control units 120, 420, and 720 detect that the first battery parameter PBAT1 of the first battery unit BAT1 meets the preset conditions, they immediately stop supplying power to the first battery unit BAT1, and the second battery unit BAT2 supplies power to systems 12, 42, and 72 through the first power output terminal VSYS1 corresponding to the first battery unit BAT1. In this way, the battery life can be effectively extended, and the voltage matching problem arising from multiple battery packs can also be avoided.

[0060] The above is merely a preferred embodiment of this case and does not limit the scope of this case in any way. Any equivalent substitution or modification made by a person skilled in the art to the technical means and technical content disclosed in this case without departing from the scope of the technical means of this case shall be deemed as not departing from the technical means of this case and shall still fall within the protection scope of this case. [Simplified Explanation of the Diagram]

[0061] The first figure is a block diagram of a power module provided according to an embodiment of the present invention; the second and third figures show the power supply control flow of the power module in the first figure after system startup; the fourth figure is a block diagram of a power module provided according to another embodiment of the present invention; the fifth and sixth figures show the power supply control flow of the power module in the fourth figure after system startup; and the seventh figure is a block diagram of an electronic device provided according to an embodiment of the present invention.

Claims

1. A power module suitable for an electronic device having a system, the power module comprising: a first power output terminal electrically coupled to the system; a second power output terminal electrically coupled to the system; a first battery cell electrically coupled to the first power output terminal and adapted to supply power to the system through a first battery power supply line; a second battery cell electrically coupled to the second power output terminal and adapted to supply power to the system through a second battery power supply line; a bridging power transmission line connecting the first power output terminal and the second power output terminal; a bridging switch element disposed on the bridging power transmission line; and a control unit electrically coupled to the first battery cell and the bridging switch element, adapted to acquire a first battery parameter corresponding to the first battery cell, and when the first battery parameter meets a preset condition, to turn off the first battery cell and put the bridging switch element in an on state, wherein... The bridging switching element comprises two back-to-back metal-oxide-semiconductor field-effect transistors.

2. The power module as claimed in claim 1 further comprises: a power input terminal adapted to obtain an external power source; a first charging unit electrically coupled to the power input terminal and the first battery unit, the first charging unit being adapted to obtain the external power source to charge the first battery unit; and a second charging unit electrically coupled to the power input terminal and the second battery unit, the second charging unit being adapted to obtain the external power source to charge the second battery unit.

3. The power module as described in claim 2 further comprises: a first direct power transmission line connecting the power input terminal and the first power output terminal; a first direct switch element disposed on the first direct power transmission line; a second direct power transmission line connecting the power input terminal and the second power output terminal; and a second direct switch element disposed on the second direct power transmission line.

4. The power module as described in claim 2 further comprises: a first charger power transmission line connected to a first charging output terminal of the first charging unit and the first battery power supply line; a first power supply switch element disposed on the first charger power transmission line; a second charger power transmission line connected to a second charging output terminal of the second charging unit and the second battery power supply line; and a second power supply switch element disposed on the second charger power transmission line.

5. The power module as described in claim 1, wherein, The control unit is electrically coupled to the first battery cell, the second battery cell, and the bridging switch element. It is adapted to acquire the first battery parameters and the second battery parameters corresponding to one of the second battery cells. When the first battery parameters meet the preset conditions but the second battery parameters do not meet the preset conditions, the control unit shuts down the first battery cell and puts the bridging switch element into the on state.

6. The power module as described in claim 1, wherein, The first battery parameter is the battery voltage, and the preset condition is that the first battery parameter is lower than a preset voltage value.

7. The power module as described in claim 1, wherein, The first battery parameter is the battery capacity, and the preset condition is that the first battery parameter is lower than a preset capacity value.

8. The power module as described in claim 1, wherein, The control unit shuts down the first battery cell to put the first battery cell into shipping mode.

9. The power module as described in claim 1, wherein, The first battery unit has a battery switch unit, and the control unit shuts down the first battery unit by controlling the first battery unit to disconnect the battery switch unit.

10. The power module as described in claim 1, wherein, The control unit puts the bridging switch element into a conducting state by putting the bridging switch element into a unidirectional conducting state from the second power output terminal to the first power output terminal.

11. The power module as described in claim 1, wherein, The system includes a first system portion and a second system portion, wherein a first power output terminal is coupled to the first system portion and a second power output terminal is coupled to the second system portion.

12. The power module as described in claim 2, wherein, This power input terminal contains multiple power input channels.

13. A power module suitable for an electronic device having a system, the power module comprising: a first power output terminal electrically coupled to the system; a second power output terminal electrically coupled to the system; a first battery cell electrically coupled to the first power output terminal and adapted to supply power to the system through a first battery power supply line; a second battery cell electrically coupled to the second power output terminal and adapted to supply power to the system through a second battery power supply line; a bridging power transmission line connecting the first power output terminal and the second power output terminal; a bridging switch element disposed on the bridging power transmission line; a first power output switch element disposed on the first battery power supply line; and a control unit electrically coupled to the first battery cell, the bridging switch element, and the first power output switch element, adapted to acquire a first battery parameter corresponding to the first battery cell, and, when the first battery parameter meets a preset condition, to put the first power output switch element in a cut-off state and to put the bridging switch element in a conduction state, wherein... The bridging switching element comprises two back-to-back metal-oxide-semiconductor field-effect transistors.

14. The power module as described in claim 13, wherein, The first battery parameter is the battery voltage, and the preset condition is that the first battery parameter is lower than a preset voltage value.

15. The power module as described in claim 13, wherein, The first battery parameter is the battery capacity, and the preset condition is that the first battery parameter is lower than a preset capacity value.

16. An electronic device comprising: a system; and a power module comprising: a first power output terminal electrically coupled to the system; a second power output terminal electrically coupled to the system; a first battery cell electrically coupled to the first power output terminal and adapted to supply power to the system through a first battery power supply line; a second battery cell electrically coupled to the second power output terminal and adapted to supply power to the system through a second battery power supply line; a bridging power transmission line connecting the first power output terminal and the second power output terminal; a bridging switch element disposed on the bridging power transmission line; and a control unit electrically coupled to the first battery cell and the bridging switch element, adapted to acquire a first battery parameter corresponding to the first battery cell, and, when the first battery parameter meets a preset condition, to turn off the first battery cell and to put the bridging switch element into a conducting state, wherein... The bridging switching element comprises two back-to-back metal-oxide-semiconductor field-effect transistors.

17. The electronic device as claimed in claim 16, wherein, The system includes a first system portion and a second system portion, wherein a first power output terminal is coupled to the first system portion and a second power output terminal is coupled to the second system portion.

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