TWI714160B - Docking station and expansion method thereof - Google Patents

Abstract

A docking station and an expansion method thereof are provided. The docking station includes expansion slots, a detector, an operation information module and a processor. One end of a connector is inserted into the expansion slot and the other end of the connector is inserted into a connecting port of an electronic device, such that the docking station is electrically connected to the electronic device. The detector is configured to detect connection between the docking station and the electronic device to output a detecting signal. The operation information module is configured to obtain operation information of the electronic device connected to the docking station according to the detecting signal. The processor is configured to obtain a main control signal corresponding to the operation information from a main controller, and determine resources available to the electronic device according to the main control signal.

Description

Expansion device and method

The present invention relates to an expansion device, in particular to an expansion device and method capable of appropriately allocating resources to electronic devices.

The biggest feature of a notebook computer is its portability. Users can carry the notebook computer with them, so they can use it conveniently in any occasion. However, for any portable electronic product, in addition to the requirements for light weight and small size, the power supply problem is often also a very important topic.

The technical problem to be solved by the present invention is to provide an expansion device for the shortcomings of the prior art. The expansion device is connected to the main control device and one or more electronic devices. The expansion device includes one or more expansion slots, detection modules, operation information modules, and processing modules. The expansion slot is configured to provide one end of the connector for insertion, and the other end of the connector is inserted into the connection port of the electronic device to electrically connect the expansion device and the electronic device. The detection module is connected to one or more expansion slots. The detection module is configured to detect the connection state of the expansion device and the electronic device to output a detection signal. The operation information module is connected to the detection module. The operation information module is configured to obtain operation information of the electronic device connected to the expansion device according to the detection signal. The processing module is connected to the operation information module and the main control device. The processing module is configured to obtain the main control signal corresponding to the operation information from the main control device, and determine the resources that the electronic device can use according to the main control signal.

In addition, the present invention provides an expansion method, including the following steps: providing an expansion device, the expansion device has one or more expansion slots, the expansion slots are configured to provide one end of the connector for inserting, and the other end of the connector for connecting the electronic device Port; use the detection module of the expansion device to detect the connection status of the expansion device and the electronic device to output a detection signal; use the operation information module of the expansion device to obtain the operation information of the electronic device connected to the expansion device based on the detection signal; and The processing module of the expansion device is used to obtain the main control signal corresponding to the operation information from the main control device, and determine the available resources of the electronic device according to the main control signal.

As described above, the expansion device and method provided by the present invention use the main control device to allocate power according to the actual power consumption of multiple electronic devices, and supply power to multiple electronic devices through the expansion device, so that each electronic device can obtain Meet the required power, and in the case of limited power supply, priority can be given to supply power to major electronic devices.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings about the present invention. However, the provided drawings are only for reference and description, and are not used to limit the present invention.

The following are specific specific examples to illustrate the implementation of the "light emitting device" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

It should be understood that although terms such as “first”, “second”, and “third” may be used in this document to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another, or one signal from another signal. In addition, the term "or" used in this article should, depending on the actual situation, possibly include any one or a combination of more of the associated listed items.

[First Embodiment]

Please refer to FIG. 1, which is a block diagram of an expansion device according to an embodiment of the present invention. As shown in FIG. 1, the expansion device 1 is connected to the main control device 2 and the electronic device 3. The expansion device 1 includes an expansion slot 10, a detection module 20, an operation information module 30 and a processing module 40. The detection module 20 contacts or connects to the expansion slot 10. The operation information module 30 is connected to the detection module 20. The processing module 40 is connected to the operation information module 30 and the main control device 2.

One end of the connector can be inserted into the expansion slot 10 of the expansion device 1, and the other end of the connector can be inserted into the connection port 31 of the electronic device 3 to electrically connect the expansion device 1 and the electronic device 3. If the electronic device 3 does not need to obtain any resources from the expansion device 1, the connector can be unplugged from the expansion slot 10 of the expansion device 1 and the connection port 31 of the electronic device 3.

It should be understood that the types of the connection port 31 of the electronic device 3 and the expansion slot 10 of the expansion device 1 should match the types of the two ends of the connector, respectively. For example, if the connection port 31 of the electronic device 3 is a USB connection port, and the expansion slot 10 of the expansion device 1 is a USB expansion slot, the USB connector is used to connect the expansion device 1 and the electronic device 3, here is only an example , The present invention is not limited to this.

The detection module 20 can be, for example, a voltage detector or a current detector, and is configured to detect the connection state of the expansion device 1 and the electronic device 3. Specifically, when the detection module 20 of the expansion device 1 detects that the connection port 31 of the electronic device 3 has been inserted into the expansion slot 10 of the expansion device 1, so that the electronic device 3 is electrically connected to the expansion device 1, the detection module 20 can The detection signal 201 is output to the operation information module 30.

The operation information module 30 of the expansion device 1 can be, for example, a data extractor. When the detection signal 201 received by the operation information module 30 from the detection module 20 indicates that the electronic device 3 is connected to the expansion device 1, the operation information module 30 can output an operation request signal to the electronic device 3 to request the electronic device 3 Provide information on its operation 32.

The operation information module 30 of the expansion device 1 can transmit the operation information 32 responded by the electronic device 3 to the processing module 40 of the expansion device 1. The processing module 40 may be, for example, a microprocessor, configured to obtain the main control signal 21 corresponding to the operation information 32 from the main control device 2, and determine the resources available for the electronic device 3 according to the main control signal 21.

Please refer to Figure 1 and Figure 2 together. Figure 1 is a block diagram of an expansion device, an electronic device, and a main control device according to an embodiment of the present invention; Figure 2 is a power basis obtained from the power supply device by the expansion device according to an embodiment of the present invention A schematic diagram of equal distribution of the actual power consumption of the electronic device.

In this embodiment, the electronic device 3 shown in FIG. 1 may include the mobile devices 331, 332, and 333 shown in FIGS. 2 and 3, which are notebook computers, but in practice, the electronic device 3 may include other Types of electronic devices, such as mobile phones, are just examples for illustration, and the present invention is not limited thereto. One end of each connector can be inserted into the port of the mobile device 331, 332, 333, and the other end of the connector can be inserted into the expansion slot of the expansion device 1 to electrically connect the mobile devices 331, 332, and 333 with the expansion device 1.

The expansion device 1 of this embodiment has three expansion slots such as USB expansion slots, respectively matching the ports of the three mobile devices 331, 332, 333, such as USB ports, but it should be understood that they can be replaced with different types and numbers as required The expansion device 1 of the expansion slot to match the different types of connection ports of the electronic device 3. The mobile devices 331, 332, and 333 of this embodiment are connected to the same expansion device 1. In practice, multiple expansion devices 1 can be provided, and the mobile devices 331, 332, and 333 can be replaced with different expansion devices 1 connected.

As shown in FIG. 2, the power supply device 4 can be wired to the expansion device 1 to supply power to the expansion device 1. As shown in Figure 1, the main control device 2 can be wirelessly connected to the expansion device 1. The main control device 2 can control the expansion device 1 to distribute the power of the power supply device 4 to the electronic device 3 such as mobile devices 331, 332, and 333. In practice, the main control device 2 can be further connected to the power supply device 4 as shown in FIG. 2 to determine the power supplied by the power supply device 4 to the expansion device 1.

The expansion device 1 may include an expansion slot 10, a detection module 20, an operation information module 30, and a processing module 40, and may further include a power storage unit, such as an internal battery, configured to store power received from the power supply device 4.

When the detection module 20 of the expansion device 1 detects that the mobile devices 331, 332, and 333 are electrically connected to the expansion device 1, it can obtain the operation information 32 of the mobile devices 331, 332, and 333 during a time interval or when the program is currently running. The processing module 40 of the expansion device 1 can provide the operating information 32 of the mobile devices 331, 332, and 333 to the main control device 2.

It is worth noting that the general power supply device determines the amount of power supplied to the mobile devices 331, 332, and 333 based on the rated power of the electronic device, such as the rated power Pac1, Pac2, Pac3 of the mobile devices 331, 332, and 333, such as 45W. As a result, the power with rated power Pac2, Pac3, such as 45W, obtained by the mobile devices 332, 333 is greater than the power demand Pac2, Pac3, for example, 30W of the mobile devices 332, 333. However, the power with the rated power Pac1, such as 45W, obtained by the mobile device 331 is less than the required power Pre1, such as 60W, of the mobile device 331, so that the mobile device 331 cannot execute the program normally.

Therefore, in this embodiment, as shown in FIG. 2, the operation information 32 may include the power demand Pre1 of the mobile device 331, such as 40W, the power demand Pre2 of the mobile device 333, such as 40W, and the power demand Pre3 of the mobile device 333, such as 40W. The main control device 2 determines the amount of power that the expansion device 1 provides to the mobile devices 331, 332, and 333 according to the demand power Pre1, the demand power Pre2, and the demand power Pre3.

When the total required power Pre1, Pre2, and Pre3 of the mobile devices 331, 332, and 333 of all the electronic devices 3 as shown in FIG. 2, the total power demand calculated is not greater than the maximum power Pmax that the power supply device 4 can supply, such as 135W, the master The device 2 can control the power supply device 4 to supply power with the required power amounts Pre1, Pre2, Pre3 to the expansion device 1, so that the mobile devices 331, 332, and 333 can obtain sufficient power for operation from the expansion device 1.

In another embodiment, when the power storage unit, such as the internal battery, of the expansion device 1 is insufficient for the operation of the expansion device 1 and power needs to be obtained from the power supply device 4, the power supply device 4 can supply the maximum power of the expansion device 1 The power Pmax, such as 135W, needs to be deducted from the power demand Pdore of the expansion device 1, such as 25W, and is the maximum power that the expansion device 1 can supply to the mobile devices 331, 332, 333, such as 110W.

The power storage unit of the expansion device 1 can store the power supplied by the power supply device 4, for example, 25W. If necessary, the power storage unit of the expansion device 1 can temporarily store the power obtained from the power supply device 4 to be supplied to the mobile devices 331, 332, and 333. While the power supply device 4 is charging the power storage unit of the expansion device 1 at the same time or at different times, the expansion device 1 can supply power to the mobile devices 331, 332, 333 to charge the power storage unit of the mobile devices 331, 332, 333, for example Internal battery. In this way, the expansion device 1 and all the mobile devices 331, 332, and 333 can obtain sufficient power.

Please refer to Figure 1, Figure 2, and Figure 3. Figure 1 is a block diagram of an expansion device, an electronic device, and a main control device according to an embodiment of the present invention; Figure 2 is a block diagram of the expansion device according to an embodiment of the present invention obtained from the power supply device A schematic diagram of equal distribution of the power according to the actual power consumption of the electronic device; FIG. 3 is a schematic diagram of the expansion device reallocating the power supply device to supply power to electronic devices with different actual power consumption.

As shown in FIG. 2, the power requirements Pre1, Pre2, and Pre3 of all the mobile devices 331, 332, and 333 are the same, for example, the power consumption is 40W. Therefore, the main control device 2 controls the expansion device 1 to equally distribute the same power, such as 40W, to the mobile devices 331, 332, and 333.

It should be understood that the power required by the mobile devices 331, 332, and 333 to perform different operations in different time intervals may change. As shown in FIG. 3, the power demand Pre1 of the mobile device 331 is increased to 60W, and the power demand Pre2 and Pre3 of the mobile devices 332 and 333 are respectively reduced to 30W. In addition, the power demand Pdore of the expansion device 1 is reduced from 25W to 15W. In this case, the main control device 2 can control the expansion device 1 to reduce the power supplied to the mobile devices 332, 333, reduce the power reserved by the expansion device 1 for the expansion device 1, and provide the remaining power to the mobile device 331 The required power Pre1 of the mobile device 331, 332, 333 and the expansion device 1 can obtain the required power Pre1, Pre2, Pre3, and Pdore, respectively.

Please refer to FIG. 4, which is a flowchart of the steps of comparing the actual power demand of the electronic device with the power threshold value of the power supply device in the expansion method of the embodiment of the present invention. As shown in FIG. 4, the expansion method of the embodiment of the present invention includes the following steps S401 to S413, which are applicable to the expansion device 1 shown in FIG.

In step S401, one or more expansion devices 1 are set. Each expansion device 1 can have multiple expansion slots.

In step S403, one or more power supply devices 4 are set. Each expansion device 1 can be connected to one of the power supply devices 4. The maximum power that the power supply device 4 can supply to all the electronic devices 3 through the expansion device 1 is represented by the power threshold P.

In step S405, the detection module of each expansion device 1 is used to detect whether the two ends of the connector are respectively inserted into the expansion slot of the expansion device 1 and the connection port 31 of the electronic device 3, so that the expansion device 1 and the electronic device 3 are electrically connected.

In step S407, the operation information module 30 of the expansion device 1 is used to obtain the required power of each electronic device 3 connected to the expansion device 1, and then the processing module 40 of the expansion device 1 is used to transfer each electronic device 3 and the expansion device The demand power of 1 is supplied to the main control device 2. The main control device 2 is used to calculate the sum of the power requirements of all the electronic devices 3 and the expansion device 1 and is represented by the total power demand T.

Alternatively, the operation information 32 of the electronic device 3 obtained by the expansion device 1 includes program information executed by the electronic device 3. The expansion device 1 is used to provide each electronic device 3 and the program information to be executed by the expansion device 1 to the main control device 2. Then, the main control device 2 is used to evaluate the power demand of each electronic device 3 and the expansion device 1 to execute the program, and the total power demand T is calculated accordingly.

In step S409, the main control device 2 is used to determine whether the total demand power T is less than the power threshold P. If the main control device 2 determines that the total required power T is less than the power threshold P, the main control device 2 determines that the power supply device 4 can supply enough power to each electronic device 3, and then executes step S413. Conversely, if the master control device 2 determines that the total required power T is not less than the power threshold P, the master control device 2 determines that each electronic device 3 cannot obtain sufficient power, and then executes step S411.

In step S411, the main control device 2 is used to distribute power.

In step S413, the main control device 2 is used to control the power supply device 4 to supply the total demand power T to the expansion device 1, and then the expansion device 1 is controlled to provide the same power as the demand power of each electronic device 3 to each electronic device 3.

Please refer to FIG. 4 and FIG. 5 together. FIG. 5 is a flowchart of the steps of determining the priority of power supply in the expansion method according to the embodiment of the present invention. As shown in FIG. 5, the expansion method of the embodiment of the present invention further includes steps S501 to S507, which are applicable to the aforementioned expansion device 1.

In step S411, the main control device 2 is used to distribute power.

In step S501, the expansion device 1 is used to obtain multiple operation information 32 of multiple electronic devices 3. The main control device 2 is used to obtain multiple operation information 32 of multiple electronic devices 3 from the expansion device 1.

In step S503, the main control device 2 is used to determine which electronic device 3 the expansion device 1 first supplies power to and the amount of power to supply according to the multiple operation information 32 of the multiple electronic devices 3 obtained.

In step S505, the main control device 2 is used to determine the power supply priority order and the amount of power of the remaining electronic devices 3 according to the multiple operation information 32 of the multiple electronic devices 3.

In step S507, the expansion device 1 is used to sequentially supply power to the electronic device 3 according to the sequence determined by the main control device 2.

Please refer to FIGS. 4 to 6 together. FIG. 6 is a flowchart of the steps of detecting the charging current of the electronic device in the expansion method of the embodiment of the present invention. As shown in FIG. 6, the expansion method of the embodiment of the present invention further includes steps S601 to S609, which are applicable to the aforementioned expansion device 1.

In step S507, the main control device 2 is used to control the expansion device 1 to sequentially supply the power obtained from the power supply device 4 to the electronic device 3.

In step S601, a timer included in or outside the expansion device 1 or the main control device 2 is used to count the time for the expansion device 1 to supply power to each electronic device 3.

In step S411, if the main control device 2 determines that the total required power T of all the electronic devices 3 and the expansion device 1 is not less than the power threshold P of the power supply device 4, power distribution is performed.

In step S603, the expansion device 1 can obtain the stored power of the power storage unit, such as the internal battery, of each electronic device 3 and provide it to the main control device 2, so that the main control device 2 determines the priority of power supply and the power supply accordingly. The main control device 2 can compare the stored power of the multiple electronic devices 3 to determine the order of detecting the charging currents of the multiple electronic devices 3. For example, the main control device 2 decides to preferentially detect the electronic device 3 with a small stored power. Then, step S605 is executed.

Alternatively, as shown in FIG. 6, step S603 can be omitted, and step S605 is directly executed after step S601 is executed. In this case, the detection sequence of the charging currents of the multiple electronic devices 3 may be the same as the power supply sequence of steps S503 and S505 determined by the identification information obtained in step S501.

It should be understood that, in practice, the detection sequence of the charging current of the plurality of electronic devices 3 may depend on both the stored power of the plurality of electronic devices 3 and the identification information or more other operation information 32.

In step S605, the current detection module included in the expansion device 1 or an additional current detection module is used to detect the charging current supplied from the expansion device 1 to the electronic device 3 of the first priority.

In step S607, a current detection module included in the expansion device 1 or an additional current detection module is used to detect the charging current supplied from the expansion device 1 to the electronic devices 3 in other sequences.

In step S609, the processing module 40 of the main control device 2 or the expansion device 1 is used to determine whether the charging current of the electronic device 3 is less than a specific ratio such as 1/2 of the demand current. The current required to execute one or more programs in a time interval.

If the main control device 2 or the expansion device 1 determines that the charging current of the electronic device 3 is not less than a specific ratio such as 1/2 of the demand current, the original power supply sequence is maintained to supply power to all the electronic devices 3.

Conversely, if the main control device 2 or the expansion device 1 determines that the charging current of the electronic device 3, such as the host, is less than a specific ratio such as 1/2 of the demand current, it means that the charging current of the electronic device 3 needs to be increased. In this case, step S411 is executed to redistribute the power supply ratio of the plurality of electronic devices 3 to increase the charging current of the electronic device 3, such as the host.

Please also refer to FIGS. 4-7. FIG. 7 is a flowchart of the steps of detecting the stored power and charging current of the battery of the electronic device in the expansion method of the embodiment of the present invention. As shown in FIG. 7, the expansion method of the embodiment of the present invention further includes steps S701 to S709, which are applicable to the aforementioned expansion device 1.

In step S507, the expansion device 1 is used to transmit power to the electronic device 3.

In step S601, a timer included in or external to the expansion device 1 or the main control device 2 is used to count the time supplied by the expansion device 1 to each electronic device 3.

In step S411, if the main control device 2 determines that the total required power T of all the electronic devices 3 and the expansion device 1 is not less than the power threshold P of the power supply device 4, power distribution is performed.

In step S603, the expansion device 1 can obtain the stored power of the power storage unit, such as the internal battery, of each electronic device 3.

In step S701, the main control device 2 can determine the electronic device 3 whose stored power of the power storage unit is lower than a proportion, for example, 80% of the required power, based on the stored power contained in the multiple operation information 32 of the multiple electronic devices 3. Or the electronic device 3 that determines that the stored power of the power storage unit is lower than a proportion of the internal battery capacity.

In step S703, the main control device 2 can determine the electronic device 3 whose stored power of the power storage unit is higher than a proportion of, for example, 80% of the required power, according to the stored power contained in the multiple operation information 32 of the multiple electronic devices 3. Or the electronic device 3 that determines that the stored power of the power storage unit is higher than a proportion of the internal battery capacity. Then, step S705 is executed.

In step S705, the main control device 2 can control the current detection module included in the expansion device 1 or an additional current detection module to preferentially detect the electronic device 3 whose stored power of the power storage unit is lower than a proportion of, for example, 80% of the required power.

In step S707, the main control device 2 may control the current detection module included in the expansion device 1 or an additional current detection module to detect the electronic device 3 whose stored power of the remaining power storage units is higher than a proportion, for example, 80% of the demand power.

In step S709, the main control device 2 can determine whether to redistribute the supply power of the multiple electronic devices 3 according to the detection results of the charging currents of the multiple electronic devices 3. If not, step S507 is executed to continuously supply power according to the original power distribution.

If the main control device 2 decides to redistribute power, step S411 and the subsequent steps as shown in FIG. 5, FIG. 6 or FIG. 7 can be executed again. In the process of performing these subsequent steps, the main control device 2 can control the expansion device 1 to reduce the power supplied to the electronic device 3 whose stored power is higher than a ratio of, for example, 90% of the demanded power, and increase the power supply until the stored power is lower than a ratio of, for example, 80 % Of the electric power required by the electronic device 3.

[Beneficial effects of the embodiment]

In summary, the general power supply device determines the power supplied to the electronic device according to the rated power of the electronic device. As a result, some electronic devices may get too much power, while other electronic devices may not get enough power to perform operations normally. In contrast, the expansion device and method provided by the present invention use the main control device to allocate power according to the actual power consumption of multiple electronic devices, and supply power to multiple electronic devices through the expansion device, so that each electronic device can Obtain the power that meets the requirements, and in the case of limited power supply, priority can be given to supply power to the main electronic devices.

The content disclosed above is only a preferred and feasible embodiment of the present invention, and does not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the description and schematic content of the present invention are included in the application of the present invention. Within the scope of the patent.

1: Expansion device 10: Expansion slot 20: Detection module 201: Detection signal 30: Operational Information Module 40: Processing module 2: Master control device 21: Main control signal 3: electronic device 31: Port 32: Operational Information 331, 332, 333: mobile devices 4: Power supply device Pac1, Pac2, Pac3, Pdoac: rated power Pre1, Pre2, Pre3, Pdore: power demand Pmax: Maximum power S401~S413, S501~ S507, S601~S609, S701~S709: steps

Fig. 1 is a block diagram of an expansion device, an electronic device, and a main control device according to an embodiment of the present invention.

2 is a schematic diagram of the expansion device according to the embodiment of the present invention that evenly distributes the power obtained from the power supply device according to the actual power consumption of the electronic device.

3 is a schematic diagram of the expansion device reallocating the power supply device to supply power to the electronic devices with different actual power consumption according to the embodiment of the present invention.

4 is a flowchart of the steps of comparing the actual power demand of the electronic device with the power threshold value of the power supply device in the expansion method of the embodiment of the present invention.

FIG. 5 is a flow chart of the steps of determining the priority of power supply in the expansion method of the embodiment of the present invention.

6 is a flowchart of the steps of detecting the charging current of the electronic device in the expansion method of the embodiment of the present invention.

FIG. 7 is a flowchart of the steps of detecting the stored power and charging current of the battery of the electronic device in the expansion method of the embodiment of the present invention.

1: Expansion device

4: Power supply device

331, 332, 333: mobile devices

Pac1, Pac2, Pac3, Pdoac: rated power

Pre1, Pre2, Pre3, Pdore: power demand

Pmax: Maximum power

Claims (8)

An expansion device is connected with a main control device and a plurality of electronic devices. The expansion device includes: a plurality of expansion slots, each of the expansion slots is configured to provide one end of a connector for insertion, and the other end of the connector is inserted into each of the A connection port of an electronic device to electrically connect the expansion device to each of the electronic devices; a detection module, which is connected to the plurality of expansion slots, is configured to detect the connection status of the expansion device and the electronic device to output A detection signal; an operation information module connected to the detection module, configured to obtain an operation information of each electronic device connected to the expansion device based on the detection signal; and a processing module, connected to the operation information module The group and the master control device are configured to obtain a master control signal corresponding to the operation information from the master control device, and determine the resources available for each electronic device according to the master control signal; wherein the operation information includes the information of each electronic device A power demand. When the master control device determines that a total power demand of the plurality of electronic devices is greater than a maximum power that a power supply device can supply through the expansion device according to the operation information, the master control device obtains each electronic device According to a stored power of a power storage unit, the power supplied by the expansion device to the multiple electronic devices and the priority order are allocated accordingly. Such as the expansion device described in item 1 of the scope of patent application, wherein the master control device determines that the total demand power of the plurality of electronic devices is not greater than the maximum power supply device that can be supplied by the expansion device according to the operation information When power is supplied, the expansion device is controlled to transmit the power corresponding to the required power supplied by the power supply device to each electronic device. For example, the expansion device described in item 1 of the scope of patent application, wherein the operation information further includes an identification data of each of the electronic devices, and the master control device determines that the total power demand of the plurality of electronic devices is greater than the When the maximum amount of power that the power supply device can supply through the expansion device, according to the multiple electronic devices respectively Of the plurality of identification data, the power and priority of the expansion device supplied to the plurality of electronic devices are allocated. For example, the expansion device described in item 3 of the scope of patent application, wherein when the main control device determines that a charging current of the priority electronic device is less than a demand current, it redistributes the power supply device to supply the plurality of electronic devices through the expansion device The power of the device. An expansion method includes the following steps: providing an expansion device having a plurality of expansion slots, each of the expansion slots is configured to provide one end of a connector for inserting, and the other end of the connector is connected to an electronic device Port; use a detection module of the expansion device to detect the connection status of the expansion device and a plurality of the electronic devices to output a detection signal; use an operation information module of the expansion device to obtain according to the detection signal An operation information of each electronic device connected to the expansion device; and a processing module of the expansion device obtains a master control signal corresponding to the operation information from a master control device, and determines each of the electronic devices according to the master control signal The resources that can be used by the electronic device; wherein the expansion method further includes the following steps: using the operation information module to obtain a demand power of each of the electronic devices, which is included in the operation information; using the main control device, according to the operation The information calculates a total power demand of the multiple electronic devices; and when the master control device determines that the total power demand is greater than a maximum power that a power supply device can supply through the expansion device, obtains a power storage of each electronic device A stored power of the energy unit is allocated according to the power and priority of the expansion device supplied to the plurality of electronic devices. The expansion method described in item 5 of the scope of patent application further includes the following steps: When using the main control device to determine that the total demand power is not greater than the maximum power that the power supply device can supply through the expansion device, control the expansion device to transmit the power corresponding to the demand power supplied by the power supply device to each of the electronics Device. For example, the expansion method described in item 5 of the scope of patent application further includes the following steps: use the operation information module to obtain the operation information that further includes an identification data of each electronic device; use the master control device to determine the total demand When the power is greater than the maximum power that the power supply device can supply through the expansion device, the power and the priority order of the power supply from the expansion device to the multiple electronic devices are allocated according to the respective identification data of the multiple electronic devices. For example, the expansion method described in item 5 of the scope of patent application further includes the following steps: using the master control device to determine that a charging current of the priority electronic device is less than a demand current, redistributing the power supply device to supply through the expansion device Power to the multiple electronic devices.

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