Docking station and control circuit thereof
By introducing control switches and extended control chips into the expansion dock, the power supply can be controlled according to the usage status of auxiliary equipment, thus solving the problem of power waste in existing expansion docks and achieving energy saving and improved work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG SUPER IND GROUP CO LTD
- Filing Date
- 2025-03-17
- Publication Date
- 2026-04-17
AI Technical Summary
Existing expansion docks continue to supply power even when auxiliary equipment does not need to communicate with the main equipment, resulting in power consumption, affecting work efficiency and increasing costs.
An expansion dock and its control circuit were designed. By controlling the power supply according to the usage status of the auxiliary equipment through the control switch and the expansion control chip, the auxiliary equipment can be connected or disconnected from the main equipment, thus avoiding unnecessary power consumption.
It effectively saves electricity, reduces power consumption, avoids frequent plugging and unplugging of auxiliary equipment, improves work efficiency and reduces costs.
Smart Images
Figure CN224137696U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of digital device technology, and in particular to a docking station and its control circuit. Background Technology
[0002] As people's demand for electronic information becomes more and more widespread, information transmission between electronic devices is becoming increasingly important. Existing electronic devices, such as mobile phones and laptops, usually connect to other devices through docking stations in order to obtain information from them.
[0003] A docking station expands a main interface into multiple expansion interfaces, enabling simultaneous connection of multiple devices. It's typically used to connect a main device (e.g., computer, mobile phone) to multiple auxiliary devices (e.g., mouse, keyboard, storage device). When these devices are plugged into the expansion interfaces, the main device supplies power to the auxiliary devices. In other words, regardless of whether the external auxiliary device is needed, as long as it's plugged into the expansion interface, the main device will supply power to it. However, in some cases, the external auxiliary device (e.g., storage device) doesn't need to constantly communicate with the main device. If the external device is unplugged when not communicating and then plugged back in when needed, frequent operations reduce efficiency. But if it's always plugged into the expansion interface, it will continuously supply power to the expansion interface, consuming the main device's battery.
[0004] Therefore, a new type of expansion dock is urgently needed for the above-mentioned use cases. Utility Model Content
[0005] This application provides an expansion dock and its control circuit, which includes a control switch. The control switch can control the connection or disconnection between the auxiliary device and the main device according to the usage status of the first auxiliary device, thereby preventing the main device's power from being consumed unnecessarily.
[0006] This application provides a control circuit for a docking station, comprising: a main interface, an expansion chip, multiple first expansion interfaces, a first charging switch, and a control switch, wherein:
[0007] The main interface is used to provide access for the main device;
[0008] The expansion chip is disposed between the main interface and the first expansion interface, and is electrically connected to the main interface and the first expansion interface respectively. The first expansion interface is used to provide access for the first auxiliary device.
[0009] The first charging switch is electrically connected to the first expansion interface and the control switch respectively;
[0010] Wherein, when the first auxiliary device connected to the first expansion interface is in use, the control switch controls the first charging switch to supply power to the first expansion interface; when the first auxiliary device connected to the first expansion interface is not in use, the control switch controls the first charging switch to disconnect the power supply to the first expansion interface.
[0011] The control circuit further includes a first expansion control chip, which is electrically connected to the first expansion interface and the first charging switch respectively. The first expansion control chip is used to control the first charging switch to disconnect the power supply to the first expansion interface when the first expansion interface is not connected to the first auxiliary device, and to control the first charging switch to supply power to the first expansion interface when the first expansion interface is connected to the first auxiliary device.
[0012] The control switch has a higher control priority than the first extended control chip.
[0013] In one embodiment, the first extended control chip is electrically connected to the enable terminal of the first charging switch, the control terminal of the control switch is electrically connected to the enable terminal of the first charging switch, and the control switch includes a ground terminal;
[0014] When the first auxiliary device is in use, the ground terminal of the control switch is disconnected from the control terminal, the first extended control chip controls the enable terminal of the first charging switch to go high, the first charging switch is turned on, and power is supplied to the first extended interface; when the first auxiliary device is not in use, the control switch is toggled so that the ground terminal is connected to the control terminal, the enable terminal of the first charging switch is pulled low, and the first charging switch disconnects the power supply to the first extended interface.
[0015] In one embodiment, the control circuit further includes a switching diode, and the control terminal of the control switch is electrically connected to the enable terminal through the switching diode.
[0016] In one embodiment, the control circuit further includes at least one second expansion interface, and the expansion chip is disposed between the main interface and the second expansion interface, and electrically connected to the main interface and the second expansion interface respectively.
[0017] In one embodiment, the control circuit further includes a second extended control chip and a second charging switch, wherein:
[0018] The second expansion control chip is electrically connected to the second expansion interface and is used to detect whether the second expansion interface is plugged into the second auxiliary device;
[0019] The second charging switch is electrically connected to the second extended control chip and the second extended interface;
[0020] Specifically, when the second expansion control chip detects that the second expansion interface is connected to the second auxiliary device, it controls the second charging switch to supply power to the second expansion interface; when the second expansion control chip detects that the second expansion interface is not connected to the second auxiliary device, it controls the second charging switch to disconnect the power supply to the second expansion interface.
[0021] In one embodiment, the control circuit further includes a data switching chip, which is electrically connected to the first extended control chip and the second extended control chip, and is used to switch the corresponding data channel according to the data channels that the first extended interface and the second extended interface are respectively connected to the first auxiliary device and the second auxiliary device.
[0022] In one embodiment, the data channel detection pins of the first and second extended control chips are electrically connected to the switching pins of the data switching chip, respectively.
[0023] In one embodiment, the control circuit further includes a charging interface and a charging control chip, wherein the charging interface and the main interface are electrically connected, and the charging control chip is electrically connected to both the charging interface and the main interface.
[0024] This application also provides a docking station, including a control circuit, a base, and a data cable, wherein:
[0025] The control circuit includes any of the control circuits described above;
[0026] The control circuit is mounted on the base.
[0027] The data cable is electrically connected to the first expansion interface and the main interface.
[0028] This application provides an expansion dock and its control circuit, comprising: a main interface, an expansion chip, multiple first expansion interfaces, a first charging switch, and a control switch. The main interface provides access for a main device. The expansion chip is disposed between the main interface and the first expansion interfaces, electrically connected to both. The first expansion interfaces provide access for first auxiliary devices. The first charging switch is electrically connected to both the first expansion interfaces and the control switch. The control switch supplies power to the first expansion interface when the first auxiliary device connected to it is in use, and disconnects power to the first expansion interface when the first auxiliary device is not in use. Therefore, this application allows the control switch to power on or off the first expansion interface according to the usage status of the first auxiliary device, avoiding repeated plugging and unplugging of the first auxiliary device. It also saves energy and reduces costs while ensuring communication of the first auxiliary device. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a structural block diagram of a control circuit for an expansion dock provided in an embodiment of this application;
[0031] Figure 2 yes Figure 1 The diagram shows a partial circuit structure of the control circuit of the expansion dock.
[0032] Figure 3 This is a schematic diagram of the power supply section of the docking station according to an embodiment of this application;
[0033] Figure 4 A schematic diagram of the circuit structure for the first charging switch;
[0034] Figure 5 This is a schematic diagram of the structure of a docking station provided in an embodiment of this application;
[0035] Figure 6 yes Figure 5 The diagram shows a specific application of the expansion dock. Detailed Implementation
[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0037] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0038] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.
[0039] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values may in practice be based on additional conditions or values beyond those stated.
[0040] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.
[0041] Please see Figure 1 , Figure 1 This is a structural block diagram of a control circuit for a docking station provided in an embodiment of this application. For example... Figure 1 As shown, the control circuit 10 of the expansion dock includes a main interface J5, an expansion chip U3, multiple first expansion interfaces J3, a control switch U14, and a first charging switch U2.
[0042] The main interface J5 is used to provide access for the main device. The main device can be, for example, a computer, a mobile phone, or other similar device.
[0043] An expansion chip U3 is positioned between the main interface J5 and the first expansion interface J3, electrically connecting both. The first expansion interface J3 provides access for a first auxiliary device. This first auxiliary device can be another device besides the main device, such as a memory, mouse, or keyboard. After being connected through the first expansion interface, the first auxiliary device can communicate with the main device while the first expansion interface J3 is charging. For example, if the first auxiliary device is a memory, and the first expansion interface J3 is charging after being inserted, the computer connected to the main device can perform read and write operations on the memory. To reduce damage to the first expansion interface J3 caused by plugging and unplugging the first auxiliary device, the first auxiliary device should always be inserted into the first expansion interface J3.
[0044] The first charging switch U2 is electrically connected to the first expansion interface J3 and the control switch U14 respectively. The number of first charging switches U2 is the same as the number of first expansion interfaces J3, such as... Figure 1 As shown, there are two first expansion interfaces J3 and two first charging switches U2, which correspond one-to-one with the first expansion interfaces J3.
[0045] Specifically, when the first auxiliary device connected to the first expansion interface J3 is in use, the control switch U14 controls the first charging switch U2 to supply power to the first expansion interface J3; when the first auxiliary device connected to the first expansion interface J3 is not in use, the control switch U14 controls the first charging switch U2 to disconnect the power supply to the first expansion interface J3.
[0046] Therefore, in this embodiment, the first expansion interface J3 is always connected to the first auxiliary device. When the first auxiliary device is in use, that is, when the first auxiliary device communicates with the main device through the first expansion interface J3 and the main interface J5, the control switch U14 controls the first charging switch U2 to supply power to the first expansion interface J3, so as to realize the communication between the first auxiliary device and the main device. Conversely, when the first auxiliary device does not need to communicate with the main device, the control switch U14 controls the first charging switch U2 to disconnect the power supply to the first expansion interface J3, so that the first expansion interface J3 does not need to be powered all the time, thereby saving energy and reducing power consumption.
[0047] Optionally, the control circuit 10 further includes a first expansion control chip U6. The first expansion control chip U6 is electrically connected to the first expansion interface J3 and the first charging switch U2, respectively. The number of first expansion control chips U6 is the same as the number of first expansion interfaces J3 and the number of first charging switches U2. Taking two first expansion interfaces J3 as an example, there are also two first expansion control chips U6, each corresponding to one of the first expansion interfaces J3. The first expansion control chip U6 is used to control the first charging switch U2 to disconnect the power supply to the first expansion interface J3 when the first expansion interface J3 is not connected to the first auxiliary device, and to control the first charging switch U2 to supply power to the first expansion interface when the second expansion interface J3 is connected to the first auxiliary device. The control priority of the control switch U14 is higher than the control priority of the first expansion control chip U6.
[0048] Specifically, the first expansion control chip U6 can detect the hot-plugging status of the first expansion interface J3, that is, detect whether a first auxiliary device is connected. If it is detected that the first expansion interface J3 is not connected to a first auxiliary device, it controls the first charging switch U2 to disconnect the power supply to the first expansion interface J3. If it is detected that the first expansion interface J3 is connected to a first auxiliary device, it controls the first charging switch U2 to supply power to the first expansion interface J3. However, if the first auxiliary device connected to the first expansion interface J3 is in an unused state, the control switch U14 can forcibly control the first charging switch U2 to disconnect the power supply to the first expansion interface J3. That is, the control priority of the control switch U14 is higher than the control priority of the first expansion control chip U6.
[0049] Optionally, the control circuit 10 further includes at least one second expansion interface J4. The expansion chip U3 is disposed between the main interface J5 and the second expansion interface J4, and is electrically connected to the main interface J5 and the second expansion interface J4, respectively. The second expansion interface J4 can connect to a second auxiliary device, which may be the same as or different from the first auxiliary device. In a specific application scenario, the first auxiliary device may be a device that frequently communicates with the main device, such as a memory, while the second auxiliary device may be a device that temporarily communicates with the main device. Thus, the second auxiliary device does not need to be constantly inserted into the second expansion interface J4; it can be connected when communication with the main device is required and unplugged when communication is not required.
[0050] Optionally, the control circuit 10 further includes a second expansion control chip U3 and a second charging switch U12. The second expansion control chip U3 is electrically connected to the second expansion interface J4 and is used to detect the hot-plugging status of the second expansion interface J4, i.e., whether the second auxiliary device is connected. The second charging switch U12 is electrically connected to the second expansion control chip U3 and the second expansion interface J4. When the second expansion control chip U3 detects that the second expansion interface J4 is connected to the second auxiliary device, it controls the second charging switch U12 to supply power to the second expansion interface J4. When the second expansion control chip U3 detects that the second expansion interface J4 is not connected to the second auxiliary device, it controls the second charging switch U12 to disconnect the power supply to the second expansion interface J4. In other words, the second expansion control chip U3 detects the hot-plugging status of the second expansion interface J4. If the second expansion interface J4 is in a hot-plugging state, i.e., connected to the second auxiliary device, it supplies power to the second expansion interface J4; otherwise, it disconnects the power to the second expansion interface J4 to save energy.
[0051] Optionally, the control circuit 10 further includes a data switching chip U11, which is electrically connected to the first extended control chip U6 and the second extended control chip U3. The data switching chip U11 is used to switch the corresponding data channel based on the data channels connected to the first auxiliary device and the second auxiliary device via the first extended interface J3 and the second extended interface J4, respectively. That is, the first extended control chip U6 and the second extended control chip U3 can further detect the direction of the accessed auxiliary device (first auxiliary device and second auxiliary device). Each access direction is connected to a preset group of data channels; for example, if four groups of data channels are provided, each access direction is connected to two groups of data channels. The corresponding data channel can be obtained based on the access direction of the auxiliary device. The data switching chip U11 can switch to the corresponding data channel based on the access direction of the auxiliary device.
[0052] Optionally, the control circuit 10 further includes a charging interface J1 and a charging control chip U1. The charging interface J1 is electrically connected to the main interface J5, and the charging control chip U1 is electrically connected to both the charging interface J1 and the main interface J5. The charging interface J1 is used to connect to an external power supply, such as through a plug. The charging control chip U1 is used to complete the charging protocol communication between the charging interface J1 and the main interface J5 when the charging interface J1 is connected to an external power supply, thereby charging the main interface J5.
[0053] Please see Figures 2-4 , Figure 2 yes Figure 1 The diagram shows a partial circuit structure of the control circuit for the expansion dock. Figure 3 This is a schematic diagram of the circuit structure of the power supply section of the docking station according to an embodiment of this application; Figure 4 yes Figure 1 The circuit structure diagram of the first charging switch or the second charging switch is shown. Figure 2 and Figure 3 As shown, pins A4, A5, A6, A7, B9, and B10 of the main interface J5 are pins TX0+, TX0-, RX0+, RX0-, USBDP0-, and USBDP0+, respectively. Pin USBDP0- is electrically connected to pin 36 of the expansion chip U3; pin USBDP0+ is electrically connected to pin 37 of the expansion chip U3; pin TX0- is electrically connected to pin 38 of the expansion chip U3; pin TX0+ is electrically connected to pin 39 of the expansion chip U3; pin RX0- is electrically connected to pin 41 of the expansion chip U3; and pin RX0+ is electrically connected to pin 42 of the expansion chip U3. Pins B15 and B16 of the main interface J5 are charging pins UCC1 and UCC2, respectively, which are electrically connected to pins 21 and 20 of the charging control chip U1 to establish charging protocol communication. Pin B1- of the main interface J5 introduces B7 as the power VBUS pin, which is connected to... Figure 3 The power supply circuit is connected to the MOSFET switch Q3.
[0054] The charging interface J1 has two charging pins, CC1 and CC2, which are electrically connected to pins 7 and 8 of the charging control chip U1, respectively; the charging interface J1 has a power supply pin, VBUS, which is connected to... Figure 3 The power supply circuit is connected to the MOSFET switch Q4. After connecting the external power supply to the charging interface J1 and completing the charging protocol communication with the charging control chip U1, the power supply is then connected via… Figure 3 The power supply circuit is used for charging via the main interface J5.
[0055] Pins DP1 and DM1 of the second expansion interface J4 are electrically connected to pins 52 and 53 of the expansion chip U3, respectively, and are further electrically connected to the data line of the expansion dock. Pins TX3P1, TX3N1, RX3P1, RX3N1, TX3P2, TX3N2, RX3P2, and RX3N2 of the second expansion interface J4 are electrically connected to pins 8, 9, 10, 11, 13, 14, 15, and 16 of the data switching chip U11, respectively. Pins CC1 and CC2 of the second expansion interface J4 are electrically connected to pins 1 and 6 of the second expansion control chip U3. Pin 4 of the second expansion control chip U3 is the data channel detection pin, and pin 6 of the data switching chip U11 is the switching pin. Pin 4 of the second expansion control chip U3 is electrically connected to pin 6 of the data switching chip U11, controlling the data channel switching of the data switching chip U11, switching the four sets of data into two sets of data connected to pins 48, 48, 50, and 51 of the expansion chip. The second expansion control chip U3 can detect the direction of the inserted second auxiliary device. Each insertion direction is connected to a preset group (e.g., two groups) of data channels, and the corresponding data channel can be obtained according to the insertion direction of the second auxiliary device. The data switching chip U11 can switch to the corresponding data channel according to the insertion direction of the auxiliary device. Pin 3 of the second expansion control chip U3 is an enable pin, which is electrically connected to the enable pin 4 of the second charging switch U12. The second expansion control chip U3 controls the second charging switch U12 to supply power to the second expansion interface J4.
[0056] like Figure 2 As shown, the circuit connection relationship between the first expansion interface J3, the first expansion control chip U6, the first charging switch U2 and the data switching chip U11 is the same as the circuit connection relationship between the second expansion interface J4, the second expansion control chip U3, the second charging switch U12 and the data switching chip U11 described above, and will not be repeated here.
[0057] Please refer to the following: Figure 4 The diagram below shows the circuit structure of the first charging switch U2. Pin 4 of the first charging switch U2 is the enable terminal, and the first expansion control chip U6 is electrically connected to the enable terminal (pin 4) of the first charging switch U2. Pin 5 of the first charging switch U2 is the power supply terminal, and pin 1 is the power supply terminal. Pin 1 is electrically connected to the first expansion interface J3. When the potential of pin 4 is pulled high, the first expansion interface J3 is powered through pins 5 and 1. Conversely, when the potential of pin 4 is pulled low, pins 5 and 1 are cut off, disconnecting the power supply to the first expansion interface J3. It should be understood that the power supply principle of the second charging switch U12 is the same.
[0058] Furthermore, pin 3 of the control switch U14 is a control terminal, which is electrically connected to the enable terminal (i.e., pin 4) of the first charging switch U2. Pin 2 of the control switch U14 is grounded, serving as a ground terminal. The control switch U14 can be toggled to connect or disconnect pins 2 and 3. When the first auxiliary device is connected to the first expansion interface J3 and is in use, the ground terminal (pin 2) and control terminal (pin 3) of the control switch U14 are disconnected. The first expansion control chip U6 controls the enable terminal (pin 4) of the first charging switch U2 to be pulled high, so the first expansion interface J3 is powered through pins 5 and 1 of the first charging switch U2. When the first auxiliary device is not in use, the control switch U14 is toggled so that the ground terminal (pin 2) and control terminal (pin 3) are connected. Pin 3 is grounded and the potential is pulled low, thereby forcibly pulling the potential of the enable terminal (pin 4) of the first charging switch U2 low. Pins 5 and 1 of the first charging switch U2 are cut off, disconnecting the power supply to the first expansion interface J3.
[0059] Furthermore, the control circuit 10 also includes a switching diode D9. The control terminal (i.e., pin 3) of the control switch U14 is electrically connected to the enable terminal (i.e., pin 4) of the first charging switch U2 through the switching diode D9. The switching diode D9 is a bipolar diode, which can prevent interference between the different first charging switches U2 when they are powered on without the control switch U14 forcibly cutting off the power.
[0060] Please see Figure 5 This application also provides a docking station 40, which includes a control circuit 41, a base 42, a data cable 43, a first expansion interface 44, a second expansion interface 46, and a main interface 45. The control circuit 41 is mounted on the base 42, and the data cable 43 electrically connects the first expansion interface 44, the second expansion interface 46, and the main interface 45. The control circuit 41 includes the control circuit 10 described above, which will not be repeated here.
[0061] In a specific application, please refer to Figure 6 , Figure 6 This is a schematic diagram of the expansion dock in this embodiment. The expansion dock 60 includes a data cable 61, a base 62, and multiple second expansion interfaces 63 disposed on the outside of the base 62. One end of the data cable 61 is provided with a main interface 64 for connecting to an external main device, which can be a computer, mobile phone, or tablet. The other end of the data cable 61 is communicatively connected to the multiple second expansion interfaces 63 on the outside of the expansion dock. The multiple second expansion interfaces 63 can be used to connect auxiliary devices, such as keyboards, mice, VR glasses, and gamepads. The expansion dock achieves the purpose of simultaneously connecting multiple auxiliary devices to the main device.
[0062] The docking station's base also features a first expansion interface 65, which is used to insert a memory device. This interface also communicates with a data cable 61. When the data cable 61 is connected to a host device, the memory device can communicate with it. Furthermore, due to the memory device's small size, the first expansion interface 65 also serves to physically store and house it. During normal use of the docking station, the memory device does not need to be removed from the top cover, regardless of whether it is needed.
[0063] When the main device uses this expansion dock to connect to the auxiliary device, the data cable 61 is directly connected to the main device, and the auxiliary device is inserted into the first expansion interface 65. If the main device does not need to access or read data from the memory at this time, the first expansion interface 65 can be powered off by the control switch (not shown in the figure), and the memory will no longer communicate with the main device, avoiding unnecessary power consumption of the main device. When it is necessary to access or read data from the memory, the first expansion interface 65 can be powered on by the control switch, and the memory and the main device can resume data communication. There is no need to remove the memory from the first expansion interface 65 on the outside of the base, which is convenient. This circuit design retains the function of the expansion dock to store small memory, avoids the main device being power-consuming by the memory when using the expansion dock, and also avoids the trouble of having to remove the memory when it is needed.
[0064] In summary, the expansion dock and its control circuit of this application include: a main interface, an expansion chip, multiple first expansion interfaces, a first charging switch, and a control switch. The main interface provides access for a main device. The expansion chip is disposed between the main interface and the first expansion interfaces, electrically connected to both. The first expansion interfaces provide access for first auxiliary devices. The first charging switch is electrically connected to both the first expansion interfaces and the control switch. When the first auxiliary device connected to the first expansion interface is in use, the control switch controls the first charging switch to supply power to the first expansion interface. When the first auxiliary device connected to the first expansion interface is not in use, the control switch controls the first charging switch to disconnect power to the first expansion interface. Therefore, this application can power or disconnect the first expansion interface according to the usage status of the first auxiliary device, avoiding repeated plugging and unplugging of the first auxiliary device. It also saves energy and reduces costs while ensuring communication of the first auxiliary device.
[0065] The above provides a detailed description of the expansion dock and its control circuit provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A control circuit for a docking station, the control circuit comprising: include: The system includes a main interface, an expansion chip, multiple first expansion interfaces, a first charging switch, and a control switch, among which: The main interface is used to provide access for the main device; The expansion chip is disposed between the main interface and the first expansion interface, and is electrically connected to the main interface and the first expansion interface respectively. The first expansion interface is used to provide access for the first auxiliary device. The first charging switch is electrically connected to the first expansion interface and the control switch respectively; Wherein, when the first auxiliary device connected to the first expansion interface is in use, the control switch controls the first charging switch to supply power to the first expansion interface; when the first auxiliary device connected to the first expansion interface is not in use, the control switch controls the first charging switch to disconnect the power supply to the first expansion interface. The control circuit further includes a first expansion control chip, which is electrically connected to the first expansion interface and the first charging switch respectively. The first expansion control chip is used to control the first charging switch to disconnect the power supply to the first expansion interface when the first expansion interface is not connected to the first auxiliary device, and to control the first charging switch to supply power to the first expansion interface when the first expansion interface is connected to the first auxiliary device. The control switch has a higher control priority than the first extended control chip.
2. The control circuit of claim 1, wherein, The first extended control chip is electrically connected to the enable terminal of the first charging switch, the control terminal of the control switch is electrically connected to the enable terminal of the first charging switch, and the control switch includes a ground terminal; When the first auxiliary device is in use, the ground terminal of the control switch is disconnected from the control terminal, the first extended control chip controls the enable terminal of the first charging switch to go high, the first charging switch is turned on, and power is supplied to the first extended interface; when the first auxiliary device is not in use, the control switch is toggled so that the ground terminal is connected to the control terminal, the enable terminal of the first charging switch is pulled low, and the first charging switch disconnects the power supply to the first extended interface.
3. The control circuit of claim 2, wherein, The control circuit also includes a switching diode, and the control terminal of the control switch is electrically connected to the enable terminal through the switching diode.
4. The control circuit of claim 1, wherein, The control circuit also includes at least one second expansion interface, and the expansion chip is disposed between the main interface and the second expansion interface, and is electrically connected to the main interface and the second expansion interface respectively.
5. The control circuit of claim 4, wherein, The control circuit also includes a second extended control chip and a second charging switch, wherein: The second expansion control chip is electrically connected to the second expansion interface and is used to detect whether the second expansion interface is plugged into the second auxiliary device; The second charging switch is electrically connected to the second extended control chip and the second extended interface; Specifically, when the second expansion control chip detects that the second expansion interface is connected to the second auxiliary device, it controls the second charging switch to supply power to the second expansion interface; when the second expansion control chip detects that the second expansion interface is not connected to the second auxiliary device, it controls the second charging switch to disconnect the power supply to the second expansion interface.
6. The control circuit of claim 5, wherein, The control circuit further includes a data switching chip, which is electrically connected to the first extended control chip and the second extended control chip, and is used to switch the corresponding data channel according to the data channels that are connected to the first auxiliary device and the second auxiliary device respectively by the first extended interface and the second extended interface.
7. The control circuit of claim 6, wherein, The data channel detection pins of the first and second extended control chips are electrically connected to the switching pins of the data switching chip, respectively.
8. The control circuit of claim 1, wherein, The control circuit also includes a charging interface and a charging control chip. The charging interface and the main interface are electrically connected, and the charging control chip is electrically connected to both the charging interface and the main interface.
9. A docking station, characterized by Includes control circuitry, base, and data cable, among which: The control circuit includes the control circuit according to any one of claims 1-8; The control circuit is mounted on the base. The data cable is electrically connected to the first expansion interface and the main interface.